Mercurial > hg > graal-compiler
annotate src/os/solaris/vm/os_solaris.cpp @ 19403:7e2c87dae93e
Create static final NodeClass field named TYPE in Node subclasses.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 16 Feb 2015 15:43:03 +0100 |
parents | 52b4284cb496 |
children | a67fe68c25c5 |
rev | line source |
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0 | 1 /* |
17707 | 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 // no precompiled headers |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/systemDictionary.hpp" | |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "code/icBuffer.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/compileBroker.hpp" | |
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32 #include "compiler/disassembler.hpp" |
1972 | 33 #include "interpreter/interpreter.hpp" |
34 #include "jvm_solaris.h" | |
35 #include "memory/allocation.inline.hpp" | |
36 #include "memory/filemap.hpp" | |
37 #include "mutex_solaris.inline.hpp" | |
38 #include "oops/oop.inline.hpp" | |
39 #include "os_share_solaris.hpp" | |
40 #include "prims/jniFastGetField.hpp" | |
41 #include "prims/jvm.h" | |
42 #include "prims/jvm_misc.hpp" | |
43 #include "runtime/arguments.hpp" | |
44 #include "runtime/extendedPC.hpp" | |
45 #include "runtime/globals.hpp" | |
46 #include "runtime/interfaceSupport.hpp" | |
47 #include "runtime/java.hpp" | |
48 #include "runtime/javaCalls.hpp" | |
49 #include "runtime/mutexLocker.hpp" | |
50 #include "runtime/objectMonitor.hpp" | |
51 #include "runtime/osThread.hpp" | |
52 #include "runtime/perfMemory.hpp" | |
53 #include "runtime/sharedRuntime.hpp" | |
54 #include "runtime/statSampler.hpp" | |
55 #include "runtime/stubRoutines.hpp" | |
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56 #include "runtime/thread.inline.hpp" |
1972 | 57 #include "runtime/threadCritical.hpp" |
58 #include "runtime/timer.hpp" | |
59 #include "services/attachListener.hpp" | |
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60 #include "services/memTracker.hpp" |
1972 | 61 #include "services/runtimeService.hpp" |
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62 #include "utilities/decoder.hpp" |
1972 | 63 #include "utilities/defaultStream.hpp" |
64 #include "utilities/events.hpp" | |
65 #include "utilities/growableArray.hpp" | |
66 #include "utilities/vmError.hpp" | |
0 | 67 |
68 // put OS-includes here | |
69 # include <dlfcn.h> | |
70 # include <errno.h> | |
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71 # include <exception> |
0 | 72 # include <link.h> |
73 # include <poll.h> | |
74 # include <pthread.h> | |
75 # include <pwd.h> | |
76 # include <schedctl.h> | |
77 # include <setjmp.h> | |
78 # include <signal.h> | |
79 # include <stdio.h> | |
80 # include <alloca.h> | |
81 # include <sys/filio.h> | |
82 # include <sys/ipc.h> | |
83 # include <sys/lwp.h> | |
84 # include <sys/machelf.h> // for elf Sym structure used by dladdr1 | |
85 # include <sys/mman.h> | |
86 # include <sys/processor.h> | |
87 # include <sys/procset.h> | |
88 # include <sys/pset.h> | |
89 # include <sys/resource.h> | |
90 # include <sys/shm.h> | |
91 # include <sys/socket.h> | |
92 # include <sys/stat.h> | |
93 # include <sys/systeminfo.h> | |
94 # include <sys/time.h> | |
95 # include <sys/times.h> | |
96 # include <sys/types.h> | |
97 # include <sys/wait.h> | |
98 # include <sys/utsname.h> | |
99 # include <thread.h> | |
100 # include <unistd.h> | |
101 # include <sys/priocntl.h> | |
102 # include <sys/rtpriocntl.h> | |
103 # include <sys/tspriocntl.h> | |
104 # include <sys/iapriocntl.h> | |
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105 # include <sys/fxpriocntl.h> |
0 | 106 # include <sys/loadavg.h> |
107 # include <string.h> | |
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108 # include <stdio.h> |
0 | 109 |
110 # define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later | |
111 # include <sys/procfs.h> // see comment in <sys/procfs.h> | |
112 | |
113 #define MAX_PATH (2 * K) | |
114 | |
115 // for timer info max values which include all bits | |
116 #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) | |
117 | |
118 | |
119 // Here are some liblgrp types from sys/lgrp_user.h to be able to | |
120 // compile on older systems without this header file. | |
121 | |
122 #ifndef MADV_ACCESS_LWP | |
123 # define MADV_ACCESS_LWP 7 /* next LWP to access heavily */ | |
124 #endif | |
125 #ifndef MADV_ACCESS_MANY | |
126 # define MADV_ACCESS_MANY 8 /* many processes to access heavily */ | |
127 #endif | |
128 | |
144
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129 #ifndef LGRP_RSRC_CPU |
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130 # define LGRP_RSRC_CPU 0 /* CPU resources */ |
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131 #endif |
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132 #ifndef LGRP_RSRC_MEM |
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133 # define LGRP_RSRC_MEM 1 /* memory resources */ |
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134 #endif |
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135 |
0 | 136 // see thr_setprio(3T) for the basis of these numbers |
137 #define MinimumPriority 0 | |
138 #define NormalPriority 64 | |
139 #define MaximumPriority 127 | |
140 | |
141 // Values for ThreadPriorityPolicy == 1 | |
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142 int prio_policy1[CriticalPriority+1] = { |
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143 -99999, 0, 16, 32, 48, 64, |
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144 80, 96, 112, 124, 127, 127 }; |
0 | 145 |
146 // System parameters used internally | |
147 static clock_t clock_tics_per_sec = 100; | |
148 | |
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149 // Track if we have called enable_extended_FILE_stdio (on Solaris 10u4+) |
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150 static bool enabled_extended_FILE_stdio = false; |
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151 |
0 | 152 // For diagnostics to print a message once. see run_periodic_checks |
153 static bool check_addr0_done = false; | |
154 static sigset_t check_signal_done; | |
155 static bool check_signals = true; | |
156 | |
157 address os::Solaris::handler_start; // start pc of thr_sighndlrinfo | |
158 address os::Solaris::handler_end; // end pc of thr_sighndlrinfo | |
159 | |
160 address os::Solaris::_main_stack_base = NULL; // 4352906 workaround | |
161 | |
162 | |
163 // "default" initializers for missing libc APIs | |
164 extern "C" { | |
165 static int lwp_mutex_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
166 static int lwp_mutex_destroy(mutex_t *mx) { return 0; } | |
167 | |
168 static int lwp_cond_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
169 static int lwp_cond_destroy(cond_t *cv) { return 0; } | |
170 } | |
171 | |
172 // "default" initializers for pthread-based synchronization | |
173 extern "C" { | |
174 static int pthread_mutex_default_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
175 static int pthread_cond_default_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
176 } | |
177 | |
10405 | 178 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time); |
179 | |
0 | 180 // Thread Local Storage |
181 // This is common to all Solaris platforms so it is defined here, | |
182 // in this common file. | |
183 // The declarations are in the os_cpu threadLS*.hpp files. | |
184 // | |
185 // Static member initialization for TLS | |
186 Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL}; | |
187 | |
188 #ifndef PRODUCT | |
189 #define _PCT(n,d) ((100.0*(double)(n))/(double)(d)) | |
190 | |
191 int ThreadLocalStorage::_tcacheHit = 0; | |
192 int ThreadLocalStorage::_tcacheMiss = 0; | |
193 | |
194 void ThreadLocalStorage::print_statistics() { | |
195 int total = _tcacheMiss+_tcacheHit; | |
196 tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n", | |
197 _tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total)); | |
198 } | |
199 #undef _PCT | |
200 #endif // PRODUCT | |
201 | |
202 Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id, | |
203 int index) { | |
204 Thread *thread = get_thread_slow(); | |
205 if (thread != NULL) { | |
206 address sp = os::current_stack_pointer(); | |
207 guarantee(thread->_stack_base == NULL || | |
208 (sp <= thread->_stack_base && | |
209 sp >= thread->_stack_base - thread->_stack_size) || | |
210 is_error_reported(), | |
211 "sp must be inside of selected thread stack"); | |
212 | |
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213 thread->set_self_raw_id(raw_id); // mark for quick retrieval |
0 | 214 _get_thread_cache[ index ] = thread; |
215 } | |
216 return thread; | |
217 } | |
218 | |
219 | |
220 static const double all_zero[ sizeof(Thread) / sizeof(double) + 1 ] = {0}; | |
221 #define NO_CACHED_THREAD ((Thread*)all_zero) | |
222 | |
223 void ThreadLocalStorage::pd_set_thread(Thread* thread) { | |
224 | |
225 // Store the new value before updating the cache to prevent a race | |
226 // between get_thread_via_cache_slowly() and this store operation. | |
227 os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread); | |
228 | |
229 // Update thread cache with new thread if setting on thread create, | |
230 // or NO_CACHED_THREAD (zeroed) thread if resetting thread on exit. | |
231 uintptr_t raw = pd_raw_thread_id(); | |
232 int ix = pd_cache_index(raw); | |
233 _get_thread_cache[ix] = thread == NULL ? NO_CACHED_THREAD : thread; | |
234 } | |
235 | |
236 void ThreadLocalStorage::pd_init() { | |
237 for (int i = 0; i < _pd_cache_size; i++) { | |
238 _get_thread_cache[i] = NO_CACHED_THREAD; | |
239 } | |
240 } | |
241 | |
242 // Invalidate all the caches (happens to be the same as pd_init). | |
243 void ThreadLocalStorage::pd_invalidate_all() { pd_init(); } | |
244 | |
245 #undef NO_CACHED_THREAD | |
246 | |
247 // END Thread Local Storage | |
248 | |
249 static inline size_t adjust_stack_size(address base, size_t size) { | |
250 if ((ssize_t)size < 0) { | |
251 // 4759953: Compensate for ridiculous stack size. | |
252 size = max_intx; | |
253 } | |
254 if (size > (size_t)base) { | |
255 // 4812466: Make sure size doesn't allow the stack to wrap the address space. | |
256 size = (size_t)base; | |
257 } | |
258 return size; | |
259 } | |
260 | |
261 static inline stack_t get_stack_info() { | |
262 stack_t st; | |
263 int retval = thr_stksegment(&st); | |
264 st.ss_size = adjust_stack_size((address)st.ss_sp, st.ss_size); | |
265 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
266 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
267 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
268 return st; | |
269 } | |
270 | |
271 address os::current_stack_base() { | |
272 int r = thr_main() ; | |
273 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
274 bool is_primordial_thread = r; | |
275 | |
276 // Workaround 4352906, avoid calls to thr_stksegment by | |
277 // thr_main after the first one (it looks like we trash | |
278 // some data, causing the value for ss_sp to be incorrect). | |
279 if (!is_primordial_thread || os::Solaris::_main_stack_base == NULL) { | |
280 stack_t st = get_stack_info(); | |
281 if (is_primordial_thread) { | |
282 // cache initial value of stack base | |
283 os::Solaris::_main_stack_base = (address)st.ss_sp; | |
284 } | |
285 return (address)st.ss_sp; | |
286 } else { | |
287 guarantee(os::Solaris::_main_stack_base != NULL, "Attempt to use null cached stack base"); | |
288 return os::Solaris::_main_stack_base; | |
289 } | |
290 } | |
291 | |
292 size_t os::current_stack_size() { | |
293 size_t size; | |
294 | |
295 int r = thr_main() ; | |
296 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
297 if(!r) { | |
298 size = get_stack_info().ss_size; | |
299 } else { | |
300 struct rlimit limits; | |
301 getrlimit(RLIMIT_STACK, &limits); | |
302 size = adjust_stack_size(os::Solaris::_main_stack_base, (size_t)limits.rlim_cur); | |
303 } | |
304 // base may not be page aligned | |
305 address base = current_stack_base(); | |
306 address bottom = (address)align_size_up((intptr_t)(base - size), os::vm_page_size());; | |
307 return (size_t)(base - bottom); | |
308 } | |
309 | |
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310 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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311 return localtime_r(clock, res); |
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312 } |
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313 |
0 | 314 // interruptible infrastructure |
315 | |
316 // setup_interruptible saves the thread state before going into an | |
317 // interruptible system call. | |
318 // The saved state is used to restore the thread to | |
319 // its former state whether or not an interrupt is received. | |
320 // Used by classloader os::read | |
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321 // os::restartable_read calls skip this layer and stay in _thread_in_native |
0 | 322 |
323 void os::Solaris::setup_interruptible(JavaThread* thread) { | |
324 | |
325 JavaThreadState thread_state = thread->thread_state(); | |
326 | |
327 assert(thread_state != _thread_blocked, "Coming from the wrong thread"); | |
328 assert(thread_state != _thread_in_native, "Native threads skip setup_interruptible"); | |
329 OSThread* osthread = thread->osthread(); | |
330 osthread->set_saved_interrupt_thread_state(thread_state); | |
331 thread->frame_anchor()->make_walkable(thread); | |
332 ThreadStateTransition::transition(thread, thread_state, _thread_blocked); | |
333 } | |
334 | |
335 // Version of setup_interruptible() for threads that are already in | |
336 // _thread_blocked. Used by os_sleep(). | |
337 void os::Solaris::setup_interruptible_already_blocked(JavaThread* thread) { | |
338 thread->frame_anchor()->make_walkable(thread); | |
339 } | |
340 | |
341 JavaThread* os::Solaris::setup_interruptible() { | |
342 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
343 setup_interruptible(thread); | |
344 return thread; | |
345 } | |
346 | |
347 void os::Solaris::try_enable_extended_io() { | |
348 typedef int (*enable_extended_FILE_stdio_t)(int, int); | |
349 | |
350 if (!UseExtendedFileIO) { | |
351 return; | |
352 } | |
353 | |
354 enable_extended_FILE_stdio_t enabler = | |
355 (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT, | |
356 "enable_extended_FILE_stdio"); | |
357 if (enabler) { | |
358 enabler(-1, -1); | |
359 } | |
360 } | |
361 | |
362 | |
363 #ifdef ASSERT | |
364 | |
365 JavaThread* os::Solaris::setup_interruptible_native() { | |
366 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
367 JavaThreadState thread_state = thread->thread_state(); | |
368 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
369 return thread; | |
370 } | |
371 | |
372 void os::Solaris::cleanup_interruptible_native(JavaThread* thread) { | |
373 JavaThreadState thread_state = thread->thread_state(); | |
374 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
375 } | |
376 #endif | |
377 | |
378 // cleanup_interruptible reverses the effects of setup_interruptible | |
379 // setup_interruptible_already_blocked() does not need any cleanup. | |
380 | |
381 void os::Solaris::cleanup_interruptible(JavaThread* thread) { | |
382 OSThread* osthread = thread->osthread(); | |
383 | |
384 ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state()); | |
385 } | |
386 | |
387 // I/O interruption related counters called in _INTERRUPTIBLE | |
388 | |
389 void os::Solaris::bump_interrupted_before_count() { | |
390 RuntimeService::record_interrupted_before_count(); | |
391 } | |
392 | |
393 void os::Solaris::bump_interrupted_during_count() { | |
394 RuntimeService::record_interrupted_during_count(); | |
395 } | |
396 | |
397 static int _processors_online = 0; | |
398 | |
399 jint os::Solaris::_os_thread_limit = 0; | |
400 volatile jint os::Solaris::_os_thread_count = 0; | |
401 | |
402 julong os::available_memory() { | |
403 return Solaris::available_memory(); | |
404 } | |
405 | |
406 julong os::Solaris::available_memory() { | |
407 return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size(); | |
408 } | |
409 | |
410 julong os::Solaris::_physical_memory = 0; | |
411 | |
412 julong os::physical_memory() { | |
413 return Solaris::physical_memory(); | |
414 } | |
415 | |
416 static hrtime_t first_hrtime = 0; | |
417 static const hrtime_t hrtime_hz = 1000*1000*1000; | |
418 static volatile hrtime_t max_hrtime = 0; | |
419 | |
420 | |
421 void os::Solaris::initialize_system_info() { | |
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422 set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); |
0 | 423 _processors_online = sysconf (_SC_NPROCESSORS_ONLN); |
424 _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); | |
425 } | |
426 | |
427 int os::active_processor_count() { | |
428 int online_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
429 pid_t pid = getpid(); | |
430 psetid_t pset = PS_NONE; | |
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431 // Are we running in a processor set or is there any processor set around? |
0 | 432 if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) { |
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433 uint_t pset_cpus; |
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434 // Query the number of cpus available to us. |
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435 if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) { |
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436 assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check"); |
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437 _processors_online = pset_cpus; |
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438 return pset_cpus; |
0 | 439 } |
440 } | |
441 // Otherwise return number of online cpus | |
442 return online_cpus; | |
443 } | |
444 | |
445 static bool find_processors_in_pset(psetid_t pset, | |
446 processorid_t** id_array, | |
447 uint_t* id_length) { | |
448 bool result = false; | |
449 // Find the number of processors in the processor set. | |
450 if (pset_info(pset, NULL, id_length, NULL) == 0) { | |
451 // Make up an array to hold their ids. | |
6197 | 452 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 453 // Fill in the array with their processor ids. |
454 if (pset_info(pset, NULL, id_length, *id_array) == 0) { | |
455 result = true; | |
456 } | |
457 } | |
458 return result; | |
459 } | |
460 | |
461 // Callers of find_processors_online() must tolerate imprecise results -- | |
462 // the system configuration can change asynchronously because of DR | |
463 // or explicit psradm operations. | |
464 // | |
465 // We also need to take care that the loop (below) terminates as the | |
466 // number of processors online can change between the _SC_NPROCESSORS_ONLN | |
467 // request and the loop that builds the list of processor ids. Unfortunately | |
468 // there's no reliable way to determine the maximum valid processor id, | |
469 // so we use a manifest constant, MAX_PROCESSOR_ID, instead. See p_online | |
470 // man pages, which claim the processor id set is "sparse, but | |
471 // not too sparse". MAX_PROCESSOR_ID is used to ensure that we eventually | |
472 // exit the loop. | |
473 // | |
474 // In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's | |
475 // not available on S8.0. | |
476 | |
477 static bool find_processors_online(processorid_t** id_array, | |
478 uint* id_length) { | |
479 const processorid_t MAX_PROCESSOR_ID = 100000 ; | |
480 // Find the number of processors online. | |
481 *id_length = sysconf(_SC_NPROCESSORS_ONLN); | |
482 // Make up an array to hold their ids. | |
6197 | 483 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 484 // Processors need not be numbered consecutively. |
485 long found = 0; | |
486 processorid_t next = 0; | |
487 while (found < *id_length && next < MAX_PROCESSOR_ID) { | |
488 processor_info_t info; | |
489 if (processor_info(next, &info) == 0) { | |
490 // NB, PI_NOINTR processors are effectively online ... | |
491 if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) { | |
492 (*id_array)[found] = next; | |
493 found += 1; | |
494 } | |
495 } | |
496 next += 1; | |
497 } | |
498 if (found < *id_length) { | |
499 // The loop above didn't identify the expected number of processors. | |
500 // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN) | |
501 // and re-running the loop, above, but there's no guarantee of progress | |
502 // if the system configuration is in flux. Instead, we just return what | |
503 // we've got. Note that in the worst case find_processors_online() could | |
504 // return an empty set. (As a fall-back in the case of the empty set we | |
505 // could just return the ID of the current processor). | |
506 *id_length = found ; | |
507 } | |
508 | |
509 return true; | |
510 } | |
511 | |
512 static bool assign_distribution(processorid_t* id_array, | |
513 uint id_length, | |
514 uint* distribution, | |
515 uint distribution_length) { | |
516 // We assume we can assign processorid_t's to uint's. | |
517 assert(sizeof(processorid_t) == sizeof(uint), | |
518 "can't convert processorid_t to uint"); | |
519 // Quick check to see if we won't succeed. | |
520 if (id_length < distribution_length) { | |
521 return false; | |
522 } | |
523 // Assign processor ids to the distribution. | |
524 // Try to shuffle processors to distribute work across boards, | |
525 // assuming 4 processors per board. | |
526 const uint processors_per_board = ProcessDistributionStride; | |
527 // Find the maximum processor id. | |
528 processorid_t max_id = 0; | |
529 for (uint m = 0; m < id_length; m += 1) { | |
530 max_id = MAX2(max_id, id_array[m]); | |
531 } | |
532 // The next id, to limit loops. | |
533 const processorid_t limit_id = max_id + 1; | |
534 // Make up markers for available processors. | |
6197 | 535 bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id, mtInternal); |
0 | 536 for (uint c = 0; c < limit_id; c += 1) { |
537 available_id[c] = false; | |
538 } | |
539 for (uint a = 0; a < id_length; a += 1) { | |
540 available_id[id_array[a]] = true; | |
541 } | |
542 // Step by "boards", then by "slot", copying to "assigned". | |
543 // NEEDS_CLEANUP: The assignment of processors should be stateful, | |
544 // remembering which processors have been assigned by | |
545 // previous calls, etc., so as to distribute several | |
546 // independent calls of this method. What we'd like is | |
547 // It would be nice to have an API that let us ask | |
548 // how many processes are bound to a processor, | |
549 // but we don't have that, either. | |
550 // In the short term, "board" is static so that | |
551 // subsequent distributions don't all start at board 0. | |
552 static uint board = 0; | |
553 uint assigned = 0; | |
554 // Until we've found enough processors .... | |
555 while (assigned < distribution_length) { | |
556 // ... find the next available processor in the board. | |
557 for (uint slot = 0; slot < processors_per_board; slot += 1) { | |
558 uint try_id = board * processors_per_board + slot; | |
559 if ((try_id < limit_id) && (available_id[try_id] == true)) { | |
560 distribution[assigned] = try_id; | |
561 available_id[try_id] = false; | |
562 assigned += 1; | |
563 break; | |
564 } | |
565 } | |
566 board += 1; | |
567 if (board * processors_per_board + 0 >= limit_id) { | |
568 board = 0; | |
569 } | |
570 } | |
571 if (available_id != NULL) { | |
6197 | 572 FREE_C_HEAP_ARRAY(bool, available_id, mtInternal); |
0 | 573 } |
574 return true; | |
575 } | |
576 | |
4006 | 577 void os::set_native_thread_name(const char *name) { |
578 // Not yet implemented. | |
579 return; | |
580 } | |
581 | |
0 | 582 bool os::distribute_processes(uint length, uint* distribution) { |
583 bool result = false; | |
584 // Find the processor id's of all the available CPUs. | |
585 processorid_t* id_array = NULL; | |
586 uint id_length = 0; | |
587 // There are some races between querying information and using it, | |
588 // since processor sets can change dynamically. | |
589 psetid_t pset = PS_NONE; | |
590 // Are we running in a processor set? | |
591 if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) { | |
592 result = find_processors_in_pset(pset, &id_array, &id_length); | |
593 } else { | |
594 result = find_processors_online(&id_array, &id_length); | |
595 } | |
596 if (result == true) { | |
597 if (id_length >= length) { | |
598 result = assign_distribution(id_array, id_length, distribution, length); | |
599 } else { | |
600 result = false; | |
601 } | |
602 } | |
603 if (id_array != NULL) { | |
6197 | 604 FREE_C_HEAP_ARRAY(processorid_t, id_array, mtInternal); |
0 | 605 } |
606 return result; | |
607 } | |
608 | |
609 bool os::bind_to_processor(uint processor_id) { | |
610 // We assume that a processorid_t can be stored in a uint. | |
611 assert(sizeof(uint) == sizeof(processorid_t), | |
612 "can't convert uint to processorid_t"); | |
613 int bind_result = | |
614 processor_bind(P_LWPID, // bind LWP. | |
615 P_MYID, // bind current LWP. | |
616 (processorid_t) processor_id, // id. | |
617 NULL); // don't return old binding. | |
618 return (bind_result == 0); | |
619 } | |
620 | |
621 bool os::getenv(const char* name, char* buffer, int len) { | |
622 char* val = ::getenv( name ); | |
623 if ( val == NULL | |
624 || strlen(val) + 1 > len ) { | |
625 if (len > 0) buffer[0] = 0; // return a null string | |
626 return false; | |
627 } | |
628 strcpy( buffer, val ); | |
629 return true; | |
630 } | |
631 | |
632 | |
633 // Return true if user is running as root. | |
634 | |
635 bool os::have_special_privileges() { | |
636 static bool init = false; | |
637 static bool privileges = false; | |
638 if (!init) { | |
639 privileges = (getuid() != geteuid()) || (getgid() != getegid()); | |
640 init = true; | |
641 } | |
642 return privileges; | |
643 } | |
644 | |
645 | |
646 void os::init_system_properties_values() { | |
647 // The next steps are taken in the product version: | |
648 // | |
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649 // Obtain the JAVA_HOME value from the location of libjvm.so. |
0 | 650 // This library should be located at: |
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651 // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm.so. |
0 | 652 // |
653 // If "/jre/lib/" appears at the right place in the path, then we | |
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654 // assume libjvm.so is installed in a JDK and we use this path. |
0 | 655 // |
656 // Otherwise exit with message: "Could not create the Java virtual machine." | |
657 // | |
658 // The following extra steps are taken in the debugging version: | |
659 // | |
660 // If "/jre/lib/" does NOT appear at the right place in the path | |
661 // instead of exit check for $JAVA_HOME environment variable. | |
662 // | |
663 // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, | |
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664 // then we append a fake suffix "hotspot/libjvm.so" to this path so |
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665 // it looks like libjvm.so is installed there |
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666 // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm.so. |
0 | 667 // |
668 // Otherwise exit. | |
669 // | |
670 // Important note: if the location of libjvm.so changes this | |
671 // code needs to be changed accordingly. | |
672 | |
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673 // Base path of extensions installed on the system. |
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674 #define SYS_EXT_DIR "/usr/jdk/packages" |
0 | 675 #define EXTENSIONS_DIR "/lib/ext" |
676 #define ENDORSED_DIR "/lib/endorsed" | |
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677 |
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678 char cpu_arch[12]; |
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679 // Buffer that fits several sprintfs. |
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680 // Note that the space for the colon and the trailing null are provided |
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681 // by the nulls included by the sizeof operator. |
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682 const size_t bufsize = |
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683 MAX4((size_t)MAXPATHLEN, // For dll_dir & friends. |
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684 sizeof(SYS_EXT_DIR) + sizeof("/lib/") + strlen(cpu_arch), // invariant ld_library_path |
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685 (size_t)MAXPATHLEN + sizeof(EXTENSIONS_DIR) + sizeof(SYS_EXT_DIR) + sizeof(EXTENSIONS_DIR), // extensions dir |
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686 (size_t)MAXPATHLEN + sizeof(ENDORSED_DIR)); // endorsed dir |
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687 char *buf = (char *)NEW_C_HEAP_ARRAY(char, bufsize, mtInternal); |
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688 |
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689 // sysclasspath, java_home, dll_dir |
0 | 690 { |
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691 char *pslash; |
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692 os::jvm_path(buf, bufsize); |
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693 |
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694 // Found the full path to libjvm.so. |
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695 // Now cut the path to <java_home>/jre if we can. |
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696 *(strrchr(buf, '/')) = '\0'; // Get rid of /libjvm.so. |
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697 pslash = strrchr(buf, '/'); |
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698 if (pslash != NULL) { |
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699 *pslash = '\0'; // Get rid of /{client|server|hotspot}. |
0 | 700 } |
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701 Arguments::set_dll_dir(buf); |
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702 |
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703 if (pslash != NULL) { |
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704 pslash = strrchr(buf, '/'); |
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705 if (pslash != NULL) { |
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706 *pslash = '\0'; // Get rid of /<arch>. |
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707 pslash = strrchr(buf, '/'); |
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708 if (pslash != NULL) { |
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709 *pslash = '\0'; // Get rid of /lib. |
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710 } |
0 | 711 } |
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712 } |
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713 Arguments::set_java_home(buf); |
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714 set_boot_path('/', ':'); |
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715 } |
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716 |
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717 // Where to look for native libraries. |
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718 { |
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719 // Use dlinfo() to determine the correct java.library.path. |
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720 // |
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721 // If we're launched by the Java launcher, and the user |
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722 // does not set java.library.path explicitly on the commandline, |
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723 // the Java launcher sets LD_LIBRARY_PATH for us and unsets |
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724 // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64. In this case |
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725 // dlinfo returns LD_LIBRARY_PATH + crle settings (including |
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726 // /usr/lib), which is exactly what we want. |
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727 // |
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728 // If the user does set java.library.path, it completely |
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729 // overwrites this setting, and always has. |
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730 // |
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731 // If we're not launched by the Java launcher, we may |
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732 // get here with any/all of the LD_LIBRARY_PATH[_32|64] |
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733 // settings. Again, dlinfo does exactly what we want. |
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734 |
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735 Dl_serinfo info_sz, *info = &info_sz; |
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736 Dl_serpath *path; |
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737 char *library_path; |
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738 char *common_path = buf; |
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739 |
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740 // Determine search path count and required buffer size. |
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741 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) { |
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742 FREE_C_HEAP_ARRAY(char, buf, mtInternal); |
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743 vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror()); |
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744 } |
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745 |
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746 // Allocate new buffer and initialize. |
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747 info = (Dl_serinfo*)NEW_C_HEAP_ARRAY(char, info_sz.dls_size, mtInternal); |
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748 info->dls_size = info_sz.dls_size; |
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749 info->dls_cnt = info_sz.dls_cnt; |
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750 |
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751 // Obtain search path information. |
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752 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) { |
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753 FREE_C_HEAP_ARRAY(char, buf, mtInternal); |
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754 FREE_C_HEAP_ARRAY(char, info, mtInternal); |
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755 vm_exit_during_initialization("dlinfo SERINFO request", dlerror()); |
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756 } |
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757 |
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758 path = &info->dls_serpath[0]; |
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759 |
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760 // Note: Due to a legacy implementation, most of the library path |
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761 // is set in the launcher. This was to accomodate linking restrictions |
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762 // on legacy Solaris implementations (which are no longer supported). |
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763 // Eventually, all the library path setting will be done here. |
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764 // |
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765 // However, to prevent the proliferation of improperly built native |
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766 // libraries, the new path component /usr/jdk/packages is added here. |
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767 |
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768 // Determine the actual CPU architecture. |
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769 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
0 | 770 #ifdef _LP64 |
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771 // If we are a 64-bit vm, perform the following translations: |
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772 // sparc -> sparcv9 |
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773 // i386 -> amd64 |
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774 if (strcmp(cpu_arch, "sparc") == 0) { |
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775 strcat(cpu_arch, "v9"); |
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776 } else if (strcmp(cpu_arch, "i386") == 0) { |
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777 strcpy(cpu_arch, "amd64"); |
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778 } |
0 | 779 #endif |
780 | |
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781 // Construct the invariant part of ld_library_path. |
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782 sprintf(common_path, SYS_EXT_DIR "/lib/%s", cpu_arch); |
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783 |
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784 // Struct size is more than sufficient for the path components obtained |
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785 // through the dlinfo() call, so only add additional space for the path |
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786 // components explicitly added here. |
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787 size_t library_path_size = info->dls_size + strlen(common_path); |
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788 library_path = (char *)NEW_C_HEAP_ARRAY(char, library_path_size, mtInternal); |
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789 library_path[0] = '\0'; |
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790 |
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791 // Construct the desired Java library path from the linker's library |
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792 // search path. |
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793 // |
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794 // For compatibility, it is optimal that we insert the additional path |
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795 // components specific to the Java VM after those components specified |
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796 // in LD_LIBRARY_PATH (if any) but before those added by the ld.so |
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797 // infrastructure. |
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798 if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it. |
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799 strcpy(library_path, common_path); |
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800 } else { |
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801 int inserted = 0; |
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802 int i; |
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803 for (i = 0; i < info->dls_cnt; i++, path++) { |
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804 uint_t flags = path->dls_flags & LA_SER_MASK; |
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805 if (((flags & LA_SER_LIBPATH) == 0) && !inserted) { |
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806 strcat(library_path, common_path); |
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807 strcat(library_path, os::path_separator()); |
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808 inserted = 1; |
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809 } |
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810 strcat(library_path, path->dls_name); |
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811 strcat(library_path, os::path_separator()); |
0 | 812 } |
17848
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813 // Eliminate trailing path separator. |
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814 library_path[strlen(library_path)-1] = '\0'; |
0 | 815 } |
816 | |
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817 // happens before argument parsing - can't use a trace flag |
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818 // tty->print_raw("init_system_properties_values: native lib path: "); |
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819 // tty->print_raw_cr(library_path); |
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820 |
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821 // Callee copies into its own buffer. |
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822 Arguments::set_library_path(library_path); |
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823 |
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824 FREE_C_HEAP_ARRAY(char, library_path, mtInternal); |
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825 FREE_C_HEAP_ARRAY(char, info, mtInternal); |
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826 } |
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827 |
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828 // Extensions directories. |
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829 sprintf(buf, "%s" EXTENSIONS_DIR ":" SYS_EXT_DIR EXTENSIONS_DIR, Arguments::get_java_home()); |
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830 Arguments::set_ext_dirs(buf); |
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831 |
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832 // Endorsed standards default directory. |
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833 sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home()); |
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834 Arguments::set_endorsed_dirs(buf); |
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835 |
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836 FREE_C_HEAP_ARRAY(char, buf, mtInternal); |
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837 |
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838 #undef SYS_EXT_DIR |
0 | 839 #undef EXTENSIONS_DIR |
840 #undef ENDORSED_DIR | |
841 } | |
842 | |
843 void os::breakpoint() { | |
844 BREAKPOINT; | |
845 } | |
846 | |
847 bool os::obsolete_option(const JavaVMOption *option) | |
848 { | |
849 if (!strncmp(option->optionString, "-Xt", 3)) { | |
850 return true; | |
851 } else if (!strncmp(option->optionString, "-Xtm", 4)) { | |
852 return true; | |
853 } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) { | |
854 return true; | |
855 } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) { | |
856 return true; | |
857 } | |
858 return false; | |
859 } | |
860 | |
861 bool os::Solaris::valid_stack_address(Thread* thread, address sp) { | |
862 address stackStart = (address)thread->stack_base(); | |
863 address stackEnd = (address)(stackStart - (address)thread->stack_size()); | |
864 if (sp < stackStart && sp >= stackEnd ) return true; | |
865 return false; | |
866 } | |
867 | |
868 extern "C" void breakpoint() { | |
869 // use debugger to set breakpoint here | |
870 } | |
871 | |
872 static thread_t main_thread; | |
873 | |
874 // Thread start routine for all new Java threads | |
875 extern "C" void* java_start(void* thread_addr) { | |
876 // Try to randomize the cache line index of hot stack frames. | |
877 // This helps when threads of the same stack traces evict each other's | |
878 // cache lines. The threads can be either from the same JVM instance, or | |
879 // from different JVM instances. The benefit is especially true for | |
880 // processors with hyperthreading technology. | |
881 static int counter = 0; | |
882 int pid = os::current_process_id(); | |
883 alloca(((pid ^ counter++) & 7) * 128); | |
884 | |
885 int prio; | |
886 Thread* thread = (Thread*)thread_addr; | |
887 OSThread* osthr = thread->osthread(); | |
888 | |
889 osthr->set_lwp_id( _lwp_self() ); // Store lwp in case we are bound | |
890 thread->_schedctl = (void *) schedctl_init () ; | |
891 | |
892 if (UseNUMA) { | |
893 int lgrp_id = os::numa_get_group_id(); | |
894 if (lgrp_id != -1) { | |
895 thread->set_lgrp_id(lgrp_id); | |
896 } | |
897 } | |
898 | |
899 // If the creator called set priority before we started, | |
4854
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900 // we need to call set_native_priority now that we have an lwp. |
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901 // We used to get the priority from thr_getprio (we called |
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902 // thr_setprio way back in create_thread) and pass it to |
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903 // set_native_priority, but Solaris scales the priority |
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904 // in java_to_os_priority, so when we read it back here, |
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905 // we pass trash to set_native_priority instead of what's |
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906 // in java_to_os_priority. So we save the native priority |
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907 // in the osThread and recall it here. |
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908 |
0 | 909 if ( osthr->thread_id() != -1 ) { |
910 if ( UseThreadPriorities ) { | |
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911 int prio = osthr->native_priority(); |
0 | 912 if (ThreadPriorityVerbose) { |
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913 tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " |
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914 INTPTR_FORMAT ", setting priority: %d\n", |
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915 osthr->thread_id(), osthr->lwp_id(), prio); |
0 | 916 } |
917 os::set_native_priority(thread, prio); | |
918 } | |
919 } else if (ThreadPriorityVerbose) { | |
920 warning("Can't set priority in _start routine, thread id hasn't been set\n"); | |
921 } | |
922 | |
923 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
924 | |
925 // initialize signal mask for this thread | |
926 os::Solaris::hotspot_sigmask(thread); | |
927 | |
928 thread->run(); | |
929 | |
930 // One less thread is executing | |
931 // When the VMThread gets here, the main thread may have already exited | |
932 // which frees the CodeHeap containing the Atomic::dec code | |
933 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
934 Atomic::dec(&os::Solaris::_os_thread_count); | |
935 } | |
936 | |
937 if (UseDetachedThreads) { | |
938 thr_exit(NULL); | |
939 ShouldNotReachHere(); | |
940 } | |
941 return NULL; | |
942 } | |
943 | |
944 static OSThread* create_os_thread(Thread* thread, thread_t thread_id) { | |
945 // Allocate the OSThread object | |
946 OSThread* osthread = new OSThread(NULL, NULL); | |
947 if (osthread == NULL) return NULL; | |
948 | |
949 // Store info on the Solaris thread into the OSThread | |
950 osthread->set_thread_id(thread_id); | |
951 osthread->set_lwp_id(_lwp_self()); | |
952 thread->_schedctl = (void *) schedctl_init () ; | |
953 | |
954 if (UseNUMA) { | |
955 int lgrp_id = os::numa_get_group_id(); | |
956 if (lgrp_id != -1) { | |
957 thread->set_lgrp_id(lgrp_id); | |
958 } | |
959 } | |
960 | |
961 if ( ThreadPriorityVerbose ) { | |
962 tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n", | |
963 osthread->thread_id(), osthread->lwp_id() ); | |
964 } | |
965 | |
966 // Initial thread state is INITIALIZED, not SUSPENDED | |
967 osthread->set_state(INITIALIZED); | |
968 | |
969 return osthread; | |
970 } | |
971 | |
972 void os::Solaris::hotspot_sigmask(Thread* thread) { | |
973 | |
974 //Save caller's signal mask | |
975 sigset_t sigmask; | |
976 thr_sigsetmask(SIG_SETMASK, NULL, &sigmask); | |
977 OSThread *osthread = thread->osthread(); | |
978 osthread->set_caller_sigmask(sigmask); | |
979 | |
980 thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL); | |
981 if (!ReduceSignalUsage) { | |
982 if (thread->is_VM_thread()) { | |
983 // Only the VM thread handles BREAK_SIGNAL ... | |
984 thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL); | |
985 } else { | |
986 // ... all other threads block BREAK_SIGNAL | |
987 assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked"); | |
988 thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL); | |
989 } | |
990 } | |
991 } | |
992 | |
993 bool os::create_attached_thread(JavaThread* thread) { | |
994 #ifdef ASSERT | |
995 thread->verify_not_published(); | |
996 #endif | |
997 OSThread* osthread = create_os_thread(thread, thr_self()); | |
998 if (osthread == NULL) { | |
999 return false; | |
1000 } | |
1001 | |
1002 // Initial thread state is RUNNABLE | |
1003 osthread->set_state(RUNNABLE); | |
1004 thread->set_osthread(osthread); | |
1005 | |
1006 // initialize signal mask for this thread | |
1007 // and save the caller's signal mask | |
1008 os::Solaris::hotspot_sigmask(thread); | |
1009 | |
1010 return true; | |
1011 } | |
1012 | |
1013 bool os::create_main_thread(JavaThread* thread) { | |
1014 #ifdef ASSERT | |
1015 thread->verify_not_published(); | |
1016 #endif | |
1017 if (_starting_thread == NULL) { | |
1018 _starting_thread = create_os_thread(thread, main_thread); | |
1019 if (_starting_thread == NULL) { | |
1020 return false; | |
1021 } | |
1022 } | |
1023 | |
1024 // The primodial thread is runnable from the start | |
1025 _starting_thread->set_state(RUNNABLE); | |
1026 | |
1027 thread->set_osthread(_starting_thread); | |
1028 | |
1029 // initialize signal mask for this thread | |
1030 // and save the caller's signal mask | |
1031 os::Solaris::hotspot_sigmask(thread); | |
1032 | |
1033 return true; | |
1034 } | |
1035 | |
1036 // _T2_libthread is true if we believe we are running with the newer | |
1037 // SunSoft lwp/libthread.so (2.8 patch, 2.9 default) | |
1038 bool os::Solaris::_T2_libthread = false; | |
1039 | |
1040 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
1041 // Allocate the OSThread object | |
1042 OSThread* osthread = new OSThread(NULL, NULL); | |
1043 if (osthread == NULL) { | |
1044 return false; | |
1045 } | |
1046 | |
1047 if ( ThreadPriorityVerbose ) { | |
1048 char *thrtyp; | |
1049 switch ( thr_type ) { | |
1050 case vm_thread: | |
1051 thrtyp = (char *)"vm"; | |
1052 break; | |
1053 case cgc_thread: | |
1054 thrtyp = (char *)"cgc"; | |
1055 break; | |
1056 case pgc_thread: | |
1057 thrtyp = (char *)"pgc"; | |
1058 break; | |
1059 case java_thread: | |
1060 thrtyp = (char *)"java"; | |
1061 break; | |
1062 case compiler_thread: | |
1063 thrtyp = (char *)"compiler"; | |
1064 break; | |
1065 case watcher_thread: | |
1066 thrtyp = (char *)"watcher"; | |
1067 break; | |
1068 default: | |
1069 thrtyp = (char *)"unknown"; | |
1070 break; | |
1071 } | |
1072 tty->print_cr("In create_thread, creating a %s thread\n", thrtyp); | |
1073 } | |
1074 | |
1075 // Calculate stack size if it's not specified by caller. | |
1076 if (stack_size == 0) { | |
1077 // The default stack size 1M (2M for LP64). | |
1078 stack_size = (BytesPerWord >> 2) * K * K; | |
1079 | |
1080 switch (thr_type) { | |
1081 case os::java_thread: | |
1082 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
1083 if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create(); | |
1084 break; | |
1085 case os::compiler_thread: | |
1086 if (CompilerThreadStackSize > 0) { | |
1087 stack_size = (size_t)(CompilerThreadStackSize * K); | |
1088 break; | |
1089 } // else fall through: | |
1090 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
1091 case os::vm_thread: | |
1092 case os::pgc_thread: | |
1093 case os::cgc_thread: | |
1094 case os::watcher_thread: | |
1095 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
1096 break; | |
1097 } | |
1098 } | |
1099 stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed); | |
1100 | |
1101 // Initial state is ALLOCATED but not INITIALIZED | |
1102 osthread->set_state(ALLOCATED); | |
1103 | |
1104 if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) { | |
1105 // We got lots of threads. Check if we still have some address space left. | |
1106 // Need to be at least 5Mb of unreserved address space. We do check by | |
1107 // trying to reserve some. | |
1108 const size_t VirtualMemoryBangSize = 20*K*K; | |
1109 char* mem = os::reserve_memory(VirtualMemoryBangSize); | |
1110 if (mem == NULL) { | |
1111 delete osthread; | |
1112 return false; | |
1113 } else { | |
1114 // Release the memory again | |
1115 os::release_memory(mem, VirtualMemoryBangSize); | |
1116 } | |
1117 } | |
1118 | |
1119 // Setup osthread because the child thread may need it. | |
1120 thread->set_osthread(osthread); | |
1121 | |
1122 // Create the Solaris thread | |
1123 // explicit THR_BOUND for T2_libthread case in case | |
1124 // that assumption is not accurate, but our alternate signal stack | |
1125 // handling is based on it which must have bound threads | |
1126 thread_t tid = 0; | |
1127 long flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED | |
1128 | ((UseBoundThreads || os::Solaris::T2_libthread() || | |
1129 (thr_type == vm_thread) || | |
1130 (thr_type == cgc_thread) || | |
1131 (thr_type == pgc_thread) || | |
1132 (thr_type == compiler_thread && BackgroundCompilation)) ? | |
1133 THR_BOUND : 0); | |
1134 int status; | |
1135 | |
1136 // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs. | |
1137 // | |
1138 // On multiprocessors systems, libthread sometimes under-provisions our | |
1139 // process with LWPs. On a 30-way systems, for instance, we could have | |
1140 // 50 user-level threads in ready state and only 2 or 3 LWPs assigned | |
1141 // to our process. This can result in under utilization of PEs. | |
1142 // I suspect the problem is related to libthread's LWP | |
1143 // pool management and to the kernel's SIGBLOCKING "last LWP parked" | |
1144 // upcall policy. | |
1145 // | |
1146 // The following code is palliative -- it attempts to ensure that our | |
1147 // process has sufficient LWPs to take advantage of multiple PEs. | |
1148 // Proper long-term cures include using user-level threads bound to LWPs | |
1149 // (THR_BOUND) or using LWP-based synchronization. Note that there is a | |
1150 // slight timing window with respect to sampling _os_thread_count, but | |
1151 // the race is benign. Also, we should periodically recompute | |
1152 // _processors_online as the min of SC_NPROCESSORS_ONLN and the | |
1153 // the number of PEs in our partition. You might be tempted to use | |
1154 // THR_NEW_LWP here, but I'd recommend against it as that could | |
1155 // result in undesirable growth of the libthread's LWP pool. | |
1156 // The fix below isn't sufficient; for instance, it doesn't take into count | |
1157 // LWPs parked on IO. It does, however, help certain CPU-bound benchmarks. | |
1158 // | |
1159 // Some pathologies this scheme doesn't handle: | |
1160 // * Threads can block, releasing the LWPs. The LWPs can age out. | |
1161 // When a large number of threads become ready again there aren't | |
1162 // enough LWPs available to service them. This can occur when the | |
1163 // number of ready threads oscillates. | |
1164 // * LWPs/Threads park on IO, thus taking the LWP out of circulation. | |
1165 // | |
1166 // Finally, we should call thr_setconcurrency() periodically to refresh | |
1167 // the LWP pool and thwart the LWP age-out mechanism. | |
1168 // The "+3" term provides a little slop -- we want to slightly overprovision. | |
1169 | |
1170 if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) { | |
1171 if (!(flags & THR_BOUND)) { | |
1172 thr_setconcurrency (os::Solaris::_os_thread_count); // avoid starvation | |
1173 } | |
1174 } | |
1175 // Although this doesn't hurt, we should warn of undefined behavior | |
1176 // when using unbound T1 threads with schedctl(). This should never | |
1177 // happen, as the compiler and VM threads are always created bound | |
1178 DEBUG_ONLY( | |
1179 if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) && | |
1180 (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) && | |
1181 ((thr_type == vm_thread) || (thr_type == cgc_thread) || | |
1182 (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) { | |
1183 warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound"); | |
1184 } | |
1185 ); | |
1186 | |
1187 | |
1188 // Mark that we don't have an lwp or thread id yet. | |
1189 // In case we attempt to set the priority before the thread starts. | |
1190 osthread->set_lwp_id(-1); | |
1191 osthread->set_thread_id(-1); | |
1192 | |
1193 status = thr_create(NULL, stack_size, java_start, thread, flags, &tid); | |
1194 if (status != 0) { | |
1195 if (PrintMiscellaneous && (Verbose || WizardMode)) { | |
1196 perror("os::create_thread"); | |
1197 } | |
1198 thread->set_osthread(NULL); | |
1199 // Need to clean up stuff we've allocated so far | |
1200 delete osthread; | |
1201 return false; | |
1202 } | |
1203 | |
1204 Atomic::inc(&os::Solaris::_os_thread_count); | |
1205 | |
1206 // Store info on the Solaris thread into the OSThread | |
1207 osthread->set_thread_id(tid); | |
1208 | |
1209 // Remember that we created this thread so we can set priority on it | |
1210 osthread->set_vm_created(); | |
1211 | |
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1212 // Set the default thread priority. If using bound threads, setting |
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1213 // lwp priority will be delayed until thread start. |
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1214 set_native_priority(thread, |
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1215 DefaultThreadPriority == -1 ? |
0 | 1216 java_to_os_priority[NormPriority] : |
1217 DefaultThreadPriority); | |
1218 | |
1219 // Initial thread state is INITIALIZED, not SUSPENDED | |
1220 osthread->set_state(INITIALIZED); | |
1221 | |
1222 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
1223 return true; | |
1224 } | |
1225 | |
1226 /* defined for >= Solaris 10. This allows builds on earlier versions | |
1227 * of Solaris to take advantage of the newly reserved Solaris JVM signals | |
1228 * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2 | |
1229 * and -XX:+UseAltSigs does nothing since these should have no conflict | |
1230 */ | |
1231 #if !defined(SIGJVM1) | |
1232 #define SIGJVM1 39 | |
1233 #define SIGJVM2 40 | |
1234 #endif | |
1235 | |
1236 debug_only(static bool signal_sets_initialized = false); | |
1237 static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; | |
1238 int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL; | |
1239 int os::Solaris::_SIGasync = ASYNC_SIGNAL; | |
1240 | |
1241 bool os::Solaris::is_sig_ignored(int sig) { | |
1242 struct sigaction oact; | |
1243 sigaction(sig, (struct sigaction*)NULL, &oact); | |
1244 void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) | |
1245 : CAST_FROM_FN_PTR(void*, oact.sa_handler); | |
1246 if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) | |
1247 return true; | |
1248 else | |
1249 return false; | |
1250 } | |
1251 | |
1252 // Note: SIGRTMIN is a macro that calls sysconf() so it will | |
1253 // dynamically detect SIGRTMIN value for the system at runtime, not buildtime | |
1254 static bool isJVM1available() { | |
1255 return SIGJVM1 < SIGRTMIN; | |
1256 } | |
1257 | |
1258 void os::Solaris::signal_sets_init() { | |
1259 // Should also have an assertion stating we are still single-threaded. | |
1260 assert(!signal_sets_initialized, "Already initialized"); | |
1261 // Fill in signals that are necessarily unblocked for all threads in | |
1262 // the VM. Currently, we unblock the following signals: | |
1263 // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden | |
1264 // by -Xrs (=ReduceSignalUsage)); | |
1265 // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all | |
1266 // other threads. The "ReduceSignalUsage" boolean tells us not to alter | |
1267 // the dispositions or masks wrt these signals. | |
1268 // Programs embedding the VM that want to use the above signals for their | |
1269 // own purposes must, at this time, use the "-Xrs" option to prevent | |
1270 // interference with shutdown hooks and BREAK_SIGNAL thread dumping. | |
1271 // (See bug 4345157, and other related bugs). | |
1272 // In reality, though, unblocking these signals is really a nop, since | |
1273 // these signals are not blocked by default. | |
1274 sigemptyset(&unblocked_sigs); | |
1275 sigemptyset(&allowdebug_blocked_sigs); | |
1276 sigaddset(&unblocked_sigs, SIGILL); | |
1277 sigaddset(&unblocked_sigs, SIGSEGV); | |
1278 sigaddset(&unblocked_sigs, SIGBUS); | |
1279 sigaddset(&unblocked_sigs, SIGFPE); | |
1280 | |
1281 if (isJVM1available) { | |
1282 os::Solaris::set_SIGinterrupt(SIGJVM1); | |
1283 os::Solaris::set_SIGasync(SIGJVM2); | |
1284 } else if (UseAltSigs) { | |
1285 os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL); | |
1286 os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL); | |
1287 } else { | |
1288 os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL); | |
1289 os::Solaris::set_SIGasync(ASYNC_SIGNAL); | |
1290 } | |
1291 | |
1292 sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt()); | |
1293 sigaddset(&unblocked_sigs, os::Solaris::SIGasync()); | |
1294 | |
1295 if (!ReduceSignalUsage) { | |
1296 if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) { | |
1297 sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); | |
1298 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL); | |
1299 } | |
1300 if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) { | |
1301 sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); | |
1302 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL); | |
1303 } | |
1304 if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) { | |
1305 sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); | |
1306 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL); | |
1307 } | |
1308 } | |
1309 // Fill in signals that are blocked by all but the VM thread. | |
1310 sigemptyset(&vm_sigs); | |
1311 if (!ReduceSignalUsage) | |
1312 sigaddset(&vm_sigs, BREAK_SIGNAL); | |
1313 debug_only(signal_sets_initialized = true); | |
1314 | |
1315 // For diagnostics only used in run_periodic_checks | |
1316 sigemptyset(&check_signal_done); | |
1317 } | |
1318 | |
1319 // These are signals that are unblocked while a thread is running Java. | |
1320 // (For some reason, they get blocked by default.) | |
1321 sigset_t* os::Solaris::unblocked_signals() { | |
1322 assert(signal_sets_initialized, "Not initialized"); | |
1323 return &unblocked_sigs; | |
1324 } | |
1325 | |
1326 // These are the signals that are blocked while a (non-VM) thread is | |
1327 // running Java. Only the VM thread handles these signals. | |
1328 sigset_t* os::Solaris::vm_signals() { | |
1329 assert(signal_sets_initialized, "Not initialized"); | |
1330 return &vm_sigs; | |
1331 } | |
1332 | |
1333 // These are signals that are blocked during cond_wait to allow debugger in | |
1334 sigset_t* os::Solaris::allowdebug_blocked_signals() { | |
1335 assert(signal_sets_initialized, "Not initialized"); | |
1336 return &allowdebug_blocked_sigs; | |
1337 } | |
1338 | |
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1339 |
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1340 void _handle_uncaught_cxx_exception() { |
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1341 VMError err("An uncaught C++ exception"); |
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1342 err.report_and_die(); |
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1343 } |
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1344 |
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1345 |
0 | 1346 // First crack at OS-specific initialization, from inside the new thread. |
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1347 void os::initialize_thread(Thread* thr) { |
0 | 1348 int r = thr_main() ; |
1349 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
1350 if (r) { | |
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1351 JavaThread* jt = (JavaThread *)thr; |
0 | 1352 assert(jt != NULL,"Sanity check"); |
1353 size_t stack_size; | |
1354 address base = jt->stack_base(); | |
1355 if (Arguments::created_by_java_launcher()) { | |
1356 // Use 2MB to allow for Solaris 7 64 bit mode. | |
1357 stack_size = JavaThread::stack_size_at_create() == 0 | |
1358 ? 2048*K : JavaThread::stack_size_at_create(); | |
1359 | |
1360 // There are rare cases when we may have already used more than | |
1361 // the basic stack size allotment before this method is invoked. | |
1362 // Attempt to allow for a normally sized java_stack. | |
1363 size_t current_stack_offset = (size_t)(base - (address)&stack_size); | |
1364 stack_size += ReservedSpace::page_align_size_down(current_stack_offset); | |
1365 } else { | |
1366 // 6269555: If we were not created by a Java launcher, i.e. if we are | |
1367 // running embedded in a native application, treat the primordial thread | |
1368 // as much like a native attached thread as possible. This means using | |
1369 // the current stack size from thr_stksegment(), unless it is too large | |
1370 // to reliably setup guard pages. A reasonable max size is 8MB. | |
1371 size_t current_size = current_stack_size(); | |
1372 // This should never happen, but just in case.... | |
1373 if (current_size == 0) current_size = 2 * K * K; | |
1374 stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size; | |
1375 } | |
1376 address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());; | |
1377 stack_size = (size_t)(base - bottom); | |
1378 | |
1379 assert(stack_size > 0, "Stack size calculation problem"); | |
1380 | |
1381 if (stack_size > jt->stack_size()) { | |
1382 NOT_PRODUCT( | |
1383 struct rlimit limits; | |
1384 getrlimit(RLIMIT_STACK, &limits); | |
1385 size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur); | |
1386 assert(size >= jt->stack_size(), "Stack size problem in main thread"); | |
1387 ) | |
1388 tty->print_cr( | |
1389 "Stack size of %d Kb exceeds current limit of %d Kb.\n" | |
1390 "(Stack sizes are rounded up to a multiple of the system page size.)\n" | |
1391 "See limit(1) to increase the stack size limit.", | |
1392 stack_size / K, jt->stack_size() / K); | |
1393 vm_exit(1); | |
1394 } | |
1395 assert(jt->stack_size() >= stack_size, | |
1396 "Attempt to map more stack than was allocated"); | |
1397 jt->set_stack_size(stack_size); | |
1398 } | |
1399 | |
1400 // 5/22/01: Right now alternate signal stacks do not handle | |
1401 // throwing stack overflow exceptions, see bug 4463178 | |
1402 // Until a fix is found for this, T2 will NOT imply alternate signal | |
1403 // stacks. | |
1404 // If using T2 libthread threads, install an alternate signal stack. | |
1405 // Because alternate stacks associate with LWPs on Solaris, | |
1406 // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads | |
1407 // we prefer to explicitly stack bang. | |
1408 // If not using T2 libthread, but using UseBoundThreads any threads | |
1409 // (primordial thread, jni_attachCurrentThread) we do not create, | |
1410 // probably are not bound, therefore they can not have an alternate | |
1411 // signal stack. Since our stack banging code is generated and | |
1412 // is shared across threads, all threads must be bound to allow | |
1413 // using alternate signal stacks. The alternative is to interpose | |
1414 // on _lwp_create to associate an alt sig stack with each LWP, | |
1415 // and this could be a problem when the JVM is embedded. | |
1416 // We would prefer to use alternate signal stacks with T2 | |
1417 // Since there is currently no accurate way to detect T2 | |
1418 // we do not. Assuming T2 when running T1 causes sig 11s or assertions | |
1419 // on installing alternate signal stacks | |
1420 | |
1421 | |
1422 // 05/09/03: removed alternate signal stack support for Solaris | |
1423 // The alternate signal stack mechanism is no longer needed to | |
1424 // handle stack overflow. This is now handled by allocating | |
1425 // guard pages (red zone) and stackbanging. | |
1426 // Initially the alternate signal stack mechanism was removed because | |
1427 // it did not work with T1 llibthread. Alternate | |
1428 // signal stacks MUST have all threads bound to lwps. Applications | |
1429 // can create their own threads and attach them without their being | |
1430 // bound under T1. This is frequently the case for the primordial thread. | |
1431 // If we were ever to reenable this mechanism we would need to | |
1432 // use the dynamic check for T2 libthread. | |
1433 | |
1434 os::Solaris::init_thread_fpu_state(); | |
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1435 std::set_terminate(_handle_uncaught_cxx_exception); |
0 | 1436 } |
1437 | |
1438 | |
1439 | |
1440 // Free Solaris resources related to the OSThread | |
1441 void os::free_thread(OSThread* osthread) { | |
1442 assert(osthread != NULL, "os::free_thread but osthread not set"); | |
1443 | |
1444 | |
1445 // We are told to free resources of the argument thread, | |
1446 // but we can only really operate on the current thread. | |
1447 // The main thread must take the VMThread down synchronously | |
1448 // before the main thread exits and frees up CodeHeap | |
1449 guarantee((Thread::current()->osthread() == osthread | |
1450 || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread"); | |
1451 if (Thread::current()->osthread() == osthread) { | |
1452 // Restore caller's signal mask | |
1453 sigset_t sigmask = osthread->caller_sigmask(); | |
1454 thr_sigsetmask(SIG_SETMASK, &sigmask, NULL); | |
1455 } | |
1456 delete osthread; | |
1457 } | |
1458 | |
1459 void os::pd_start_thread(Thread* thread) { | |
1460 int status = thr_continue(thread->osthread()->thread_id()); | |
1461 assert_status(status == 0, status, "thr_continue failed"); | |
1462 } | |
1463 | |
1464 | |
1465 intx os::current_thread_id() { | |
1466 return (intx)thr_self(); | |
1467 } | |
1468 | |
1469 static pid_t _initial_pid = 0; | |
1470 | |
1471 int os::current_process_id() { | |
1472 return (int)(_initial_pid ? _initial_pid : getpid()); | |
1473 } | |
1474 | |
1475 int os::allocate_thread_local_storage() { | |
1476 // %%% in Win32 this allocates a memory segment pointed to by a | |
1477 // register. Dan Stein can implement a similar feature in | |
1478 // Solaris. Alternatively, the VM can do the same thing | |
1479 // explicitly: malloc some storage and keep the pointer in a | |
1480 // register (which is part of the thread's context) (or keep it | |
1481 // in TLS). | |
1482 // %%% In current versions of Solaris, thr_self and TSD can | |
1483 // be accessed via short sequences of displaced indirections. | |
1484 // The value of thr_self is available as %g7(36). | |
1485 // The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4), | |
1486 // assuming that the current thread already has a value bound to k. | |
1487 // It may be worth experimenting with such access patterns, | |
1488 // and later having the parameters formally exported from a Solaris | |
1489 // interface. I think, however, that it will be faster to | |
1490 // maintain the invariant that %g2 always contains the | |
1491 // JavaThread in Java code, and have stubs simply | |
1492 // treat %g2 as a caller-save register, preserving it in a %lN. | |
1493 thread_key_t tk; | |
1494 if (thr_keycreate( &tk, NULL ) ) | |
1490
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1495 fatal(err_msg("os::allocate_thread_local_storage: thr_keycreate failed " |
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1496 "(%s)", strerror(errno))); |
0 | 1497 return int(tk); |
1498 } | |
1499 | |
1500 void os::free_thread_local_storage(int index) { | |
1501 // %%% don't think we need anything here | |
1502 // if ( pthread_key_delete((pthread_key_t) tk) ) | |
1503 // fatal("os::free_thread_local_storage: pthread_key_delete failed"); | |
1504 } | |
1505 | |
1506 #define SMALLINT 32 // libthread allocate for tsd_common is a version specific | |
1507 // small number - point is NO swap space available | |
1508 void os::thread_local_storage_at_put(int index, void* value) { | |
1509 // %%% this is used only in threadLocalStorage.cpp | |
1510 if (thr_setspecific((thread_key_t)index, value)) { | |
1511 if (errno == ENOMEM) { | |
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1512 vm_exit_out_of_memory(SMALLINT, OOM_MALLOC_ERROR, |
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1513 "thr_setspecific: out of swap space"); |
0 | 1514 } else { |
1490
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1515 fatal(err_msg("os::thread_local_storage_at_put: thr_setspecific failed " |
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1516 "(%s)", strerror(errno))); |
0 | 1517 } |
1518 } else { | |
1519 ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ; | |
1520 } | |
1521 } | |
1522 | |
1523 // This function could be called before TLS is initialized, for example, when | |
1524 // VM receives an async signal or when VM causes a fatal error during | |
1525 // initialization. Return NULL if thr_getspecific() fails. | |
1526 void* os::thread_local_storage_at(int index) { | |
1527 // %%% this is used only in threadLocalStorage.cpp | |
1528 void* r = NULL; | |
1529 return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r; | |
1530 } | |
1531 | |
1532 | |
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1533 // gethrtime() should be monotonic according to the documentation, |
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1534 // but some virtualized platforms are known to break this guarantee. |
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1535 // getTimeNanos() must be guaranteed not to move backwards, so we |
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1536 // are forced to add a check here. |
0 | 1537 inline hrtime_t getTimeNanos() { |
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1538 const hrtime_t now = gethrtime(); |
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1539 const hrtime_t prev = max_hrtime; |
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1540 if (now <= prev) { |
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1541 return prev; // same or retrograde time; |
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1542 } |
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1543 const hrtime_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&max_hrtime, prev); |
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1544 assert(obsv >= prev, "invariant"); // Monotonicity |
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1545 // If the CAS succeeded then we're done and return "now". |
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1546 // If the CAS failed and the observed value "obsv" is >= now then |
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1547 // we should return "obsv". If the CAS failed and now > obsv > prv then |
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1548 // some other thread raced this thread and installed a new value, in which case |
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1549 // we could either (a) retry the entire operation, (b) retry trying to install now |
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1550 // or (c) just return obsv. We use (c). No loop is required although in some cases |
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1551 // we might discard a higher "now" value in deference to a slightly lower but freshly |
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1552 // installed obsv value. That's entirely benign -- it admits no new orderings compared |
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1553 // to (a) or (b) -- and greatly reduces coherence traffic. |
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1554 // We might also condition (c) on the magnitude of the delta between obsv and now. |
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1555 // Avoiding excessive CAS operations to hot RW locations is critical. |
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1556 // See https://blogs.oracle.com/dave/entry/cas_and_cache_trivia_invalidate |
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1557 return (prev == obsv) ? now : obsv; |
0 | 1558 } |
1559 | |
1560 // Time since start-up in seconds to a fine granularity. | |
1561 // Used by VMSelfDestructTimer and the MemProfiler. | |
1562 double os::elapsedTime() { | |
1563 return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz; | |
1564 } | |
1565 | |
1566 jlong os::elapsed_counter() { | |
1567 return (jlong)(getTimeNanos() - first_hrtime); | |
1568 } | |
1569 | |
1570 jlong os::elapsed_frequency() { | |
1571 return hrtime_hz; | |
1572 } | |
1573 | |
1574 // Return the real, user, and system times in seconds from an | |
1575 // arbitrary fixed point in the past. | |
1576 bool os::getTimesSecs(double* process_real_time, | |
1577 double* process_user_time, | |
1578 double* process_system_time) { | |
1579 struct tms ticks; | |
1580 clock_t real_ticks = times(&ticks); | |
1581 | |
1582 if (real_ticks == (clock_t) (-1)) { | |
1583 return false; | |
1584 } else { | |
1585 double ticks_per_second = (double) clock_tics_per_sec; | |
1586 *process_user_time = ((double) ticks.tms_utime) / ticks_per_second; | |
1587 *process_system_time = ((double) ticks.tms_stime) / ticks_per_second; | |
1588 // For consistency return the real time from getTimeNanos() | |
1589 // converted to seconds. | |
1590 *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS); | |
1591 | |
1592 return true; | |
1593 } | |
1594 } | |
1595 | |
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1596 bool os::supports_vtime() { return true; } |
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1597 |
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1598 bool os::enable_vtime() { |
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1599 int fd = ::open("/proc/self/ctl", O_WRONLY); |
342
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1600 if (fd == -1) |
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1601 return false; |
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1602 |
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1603 long cmd[] = { PCSET, PR_MSACCT }; |
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1604 int res = ::write(fd, cmd, sizeof(long) * 2); |
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1605 ::close(fd); |
342
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1606 if (res != sizeof(long) * 2) |
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1607 return false; |
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1608 |
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1609 return true; |
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1610 } |
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1611 |
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1612 bool os::vtime_enabled() { |
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1613 int fd = ::open("/proc/self/status", O_RDONLY); |
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1614 if (fd == -1) |
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1615 return false; |
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1616 |
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1617 pstatus_t status; |
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1618 int res = os::read(fd, (void*) &status, sizeof(pstatus_t)); |
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1619 ::close(fd); |
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1620 if (res != sizeof(pstatus_t)) |
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1621 return false; |
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1622 |
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1623 return status.pr_flags & PR_MSACCT; |
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1624 } |
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1625 |
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1626 double os::elapsedVTime() { |
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1627 return (double)gethrvtime() / (double)hrtime_hz; |
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1628 } |
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1629 |
0 | 1630 // Used internally for comparisons only |
1631 // getTimeMillis guaranteed to not move backwards on Solaris | |
1632 jlong getTimeMillis() { | |
1633 jlong nanotime = getTimeNanos(); | |
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1634 return (jlong)(nanotime / NANOSECS_PER_MILLISEC); |
0 | 1635 } |
1636 | |
61 | 1637 // Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis |
1638 jlong os::javaTimeMillis() { | |
0 | 1639 timeval t; |
1640 if (gettimeofday( &t, NULL) == -1) | |
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1641 fatal(err_msg("os::javaTimeMillis: gettimeofday (%s)", strerror(errno))); |
0 | 1642 return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000; |
1643 } | |
1644 | |
1645 jlong os::javaTimeNanos() { | |
1646 return (jlong)getTimeNanos(); | |
1647 } | |
1648 | |
1649 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
1650 info_ptr->max_value = ALL_64_BITS; // gethrtime() uses all 64 bits | |
1651 info_ptr->may_skip_backward = false; // not subject to resetting or drifting | |
1652 info_ptr->may_skip_forward = false; // not subject to resetting or drifting | |
1653 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
1654 } | |
1655 | |
1656 char * os::local_time_string(char *buf, size_t buflen) { | |
1657 struct tm t; | |
1658 time_t long_time; | |
1659 time(&long_time); | |
1660 localtime_r(&long_time, &t); | |
1661 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
1662 t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, | |
1663 t.tm_hour, t.tm_min, t.tm_sec); | |
1664 return buf; | |
1665 } | |
1666 | |
1667 // Note: os::shutdown() might be called very early during initialization, or | |
1668 // called from signal handler. Before adding something to os::shutdown(), make | |
1669 // sure it is async-safe and can handle partially initialized VM. | |
1670 void os::shutdown() { | |
1671 | |
1672 // allow PerfMemory to attempt cleanup of any persistent resources | |
1673 perfMemory_exit(); | |
1674 | |
1675 // needs to remove object in file system | |
1676 AttachListener::abort(); | |
1677 | |
1678 // flush buffered output, finish log files | |
1679 ostream_abort(); | |
1680 | |
1681 // Check for abort hook | |
1682 abort_hook_t abort_hook = Arguments::abort_hook(); | |
1683 if (abort_hook != NULL) { | |
1684 abort_hook(); | |
1685 } | |
1686 } | |
1687 | |
1688 // Note: os::abort() might be called very early during initialization, or | |
1689 // called from signal handler. Before adding something to os::abort(), make | |
1690 // sure it is async-safe and can handle partially initialized VM. | |
1691 void os::abort(bool dump_core) { | |
1692 os::shutdown(); | |
1693 if (dump_core) { | |
1694 #ifndef PRODUCT | |
1695 fdStream out(defaultStream::output_fd()); | |
1696 out.print_raw("Current thread is "); | |
1697 char buf[16]; | |
1698 jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); | |
1699 out.print_raw_cr(buf); | |
1700 out.print_raw_cr("Dumping core ..."); | |
1701 #endif | |
1702 ::abort(); // dump core (for debugging) | |
1703 } | |
1704 | |
1705 ::exit(1); | |
1706 } | |
1707 | |
1708 // Die immediately, no exit hook, no abort hook, no cleanup. | |
1709 void os::die() { | |
8066
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changeset
|
1710 ::abort(); // dump core (for debugging) |
0 | 1711 } |
1712 | |
1713 // DLL functions | |
1714 | |
1715 const char* os::dll_file_extension() { return ".so"; } | |
1716 | |
2130
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7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
coleenp
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changeset
|
1717 // This must be hard coded because it's the system's temporary |
34d64ad817f4
7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
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changeset
|
1718 // directory not the java application's temp directory, ala java.io.tmpdir. |
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7009828: Fix for 6938627 breaks visualvm monitoring when -Djava.io.tmpdir is defined
coleenp
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|
1719 const char* os::get_temp_directory() { return "/tmp"; } |
0 | 1720 |
691 | 1721 static bool file_exists(const char* filename) { |
1722 struct stat statbuf; | |
1723 if (filename == NULL || strlen(filename) == 0) { | |
1724 return false; | |
1725 } | |
1726 return os::stat(filename, &statbuf) == 0; | |
1727 } | |
1728 | |
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8001185: parsing of sun.boot.library.path in os::dll_build_name somewhat broken
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|
1729 bool os::dll_build_name(char* buffer, size_t buflen, |
691 | 1730 const char* pname, const char* fname) { |
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|
1731 bool retval = false; |
242 | 1732 const size_t pnamelen = pname ? strlen(pname) : 0; |
1733 | |
6966
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|
1734 // Return error on buffer overflow. |
242 | 1735 if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { |
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|
1736 return retval; |
242 | 1737 } |
1738 | |
1739 if (pnamelen == 0) { | |
691 | 1740 snprintf(buffer, buflen, "lib%s.so", fname); |
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|
1741 retval = true; |
691 | 1742 } else if (strchr(pname, *os::path_separator()) != NULL) { |
1743 int n; | |
1744 char** pelements = split_path(pname, &n); | |
9059
17bf4d428955
8006103: [parfait] Possible null pointer dereference at hotspot/src/os/linux/vm/os_linux.cpp; os_windows.cpp; os_solaris.cpp; os_bsd.cpp
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changeset
|
1745 if (pelements == NULL) { |
9062 | 1746 return false; |
9059
17bf4d428955
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|
1747 } |
691 | 1748 for (int i = 0 ; i < n ; i++) { |
1749 // really shouldn't be NULL but what the heck, check can't hurt | |
1750 if (pelements[i] == NULL || strlen(pelements[i]) == 0) { | |
1751 continue; // skip the empty path values | |
1752 } | |
1753 snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname); | |
1754 if (file_exists(buffer)) { | |
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|
1755 retval = true; |
691 | 1756 break; |
1757 } | |
1758 } | |
1759 // release the storage | |
1760 for (int i = 0 ; i < n ; i++) { | |
1761 if (pelements[i] != NULL) { | |
6197 | 1762 FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); |
691 | 1763 } |
1764 } | |
1765 if (pelements != NULL) { | |
6197 | 1766 FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); |
691 | 1767 } |
242 | 1768 } else { |
691 | 1769 snprintf(buffer, buflen, "%s/lib%s.so", pname, fname); |
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|
1770 retval = true; |
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|
1771 } |
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|
1772 return retval; |
242 | 1773 } |
1774 | |
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|
1775 // check if addr is inside libjvm.so |
0 | 1776 bool os::address_is_in_vm(address addr) { |
1777 static address libjvm_base_addr; | |
1778 Dl_info dlinfo; | |
1779 | |
1780 if (libjvm_base_addr == NULL) { | |
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1781 if (dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo) != 0) { |
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|
1782 libjvm_base_addr = (address)dlinfo.dli_fbase; |
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|
1783 } |
0 | 1784 assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); |
1785 } | |
1786 | |
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|
1787 if (dladdr((void *)addr, &dlinfo) != 0) { |
0 | 1788 if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; |
1789 } | |
1790 | |
1791 return false; | |
1792 } | |
1793 | |
1794 typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int); | |
1795 static dladdr1_func_type dladdr1_func = NULL; | |
1796 | |
1797 bool os::dll_address_to_function_name(address addr, char *buf, | |
1798 int buflen, int * offset) { | |
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1799 // buf is not optional, but offset is optional |
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|
1800 assert(buf != NULL, "sanity check"); |
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|
1801 |
0 | 1802 Dl_info dlinfo; |
1803 | |
1804 // dladdr1_func was initialized in os::init() | |
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1805 if (dladdr1_func != NULL) { |
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1806 // yes, we have dladdr1 |
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|
1807 |
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|
1808 // Support for dladdr1 is checked at runtime; it may be |
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|
1809 // available even if the vm is built on a machine that does |
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|
1810 // not have dladdr1 support. Make sure there is a value for |
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|
1811 // RTLD_DL_SYMENT. |
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|
1812 #ifndef RTLD_DL_SYMENT |
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|
1813 #define RTLD_DL_SYMENT 1 |
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|
1814 #endif |
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1815 #ifdef _LP64 |
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|
1816 Elf64_Sym * info; |
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|
1817 #else |
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|
1818 Elf32_Sym * info; |
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|
1819 #endif |
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1820 if (dladdr1_func((void *)addr, &dlinfo, (void **)&info, |
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1821 RTLD_DL_SYMENT) != 0) { |
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1822 // see if we have a matching symbol that covers our address |
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1823 if (dlinfo.dli_saddr != NULL && |
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|
1824 (char *)dlinfo.dli_saddr + info->st_size > (char *)addr) { |
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1825 if (dlinfo.dli_sname != NULL) { |
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1826 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) { |
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|
1827 jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); |
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|
1828 } |
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|
1829 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
2022
2d4762ec74af
7003748: Decode C stack frames when symbols are presented (PhoneHome project)
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|
1830 return true; |
2d4762ec74af
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|
1831 } |
2d4762ec74af
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|
1832 } |
11092
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|
1833 // no matching symbol so try for just file info |
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|
1834 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { |
2022
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|
1835 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
11092
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|
1836 buf, buflen, offset, dlinfo.dli_fname)) { |
0 | 1837 return true; |
2022
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|
1838 } |
0 | 1839 } |
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|
1840 } |
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|
1841 buf[0] = '\0'; |
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|
1842 if (offset != NULL) *offset = -1; |
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|
1843 return false; |
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|
1844 } |
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|
1845 |
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|
1846 // no, only dladdr is available |
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1847 if (dladdr((void *)addr, &dlinfo) != 0) { |
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|
1848 // see if we have a matching symbol |
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|
1849 if (dlinfo.dli_saddr != NULL && dlinfo.dli_sname != NULL) { |
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1850 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) { |
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1851 jio_snprintf(buf, buflen, dlinfo.dli_sname); |
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|
1852 } |
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|
1853 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
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|
1854 return true; |
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|
1855 } |
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|
1856 // no matching symbol so try for just file info |
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|
1857 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { |
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|
1858 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
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|
1859 buf, buflen, offset, dlinfo.dli_fname)) { |
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|
1860 return true; |
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|
1861 } |
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|
1862 } |
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|
1863 } |
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|
1864 buf[0] = '\0'; |
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|
1865 if (offset != NULL) *offset = -1; |
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|
1866 return false; |
0 | 1867 } |
1868 | |
1869 bool os::dll_address_to_library_name(address addr, char* buf, | |
1870 int buflen, int* offset) { | |
11092
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|
1871 // buf is not optional, but offset is optional |
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|
1872 assert(buf != NULL, "sanity check"); |
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|
1873 |
0 | 1874 Dl_info dlinfo; |
1875 | |
11092
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|
1876 if (dladdr((void*)addr, &dlinfo) != 0) { |
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|
1877 if (dlinfo.dli_fname != NULL) { |
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|
1878 jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); |
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1879 } |
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1880 if (dlinfo.dli_fbase != NULL && offset != NULL) { |
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1881 *offset = addr - (address)dlinfo.dli_fbase; |
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1882 } |
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1883 return true; |
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1884 } |
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1885 |
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1886 buf[0] = '\0'; |
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1887 if (offset) *offset = -1; |
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1888 return false; |
0 | 1889 } |
1890 | |
1891 // Prints the names and full paths of all opened dynamic libraries | |
1892 // for current process | |
1893 void os::print_dll_info(outputStream * st) { | |
11092
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1894 Dl_info dli; |
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1895 void *handle; |
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1896 Link_map *map; |
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1897 Link_map *p; |
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1898 |
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1899 st->print_cr("Dynamic libraries:"); st->flush(); |
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1900 |
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1901 if (dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli) == 0 || |
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1902 dli.dli_fname == NULL) { |
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1903 st->print_cr("Error: Cannot print dynamic libraries."); |
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1904 return; |
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1905 } |
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1906 handle = dlopen(dli.dli_fname, RTLD_LAZY); |
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1907 if (handle == NULL) { |
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1908 st->print_cr("Error: Cannot print dynamic libraries."); |
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1909 return; |
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1910 } |
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1911 dlinfo(handle, RTLD_DI_LINKMAP, &map); |
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1912 if (map == NULL) { |
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1913 st->print_cr("Error: Cannot print dynamic libraries."); |
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1914 return; |
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1915 } |
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1916 |
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1917 while (map->l_prev != NULL) |
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1918 map = map->l_prev; |
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1919 |
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1920 while (map != NULL) { |
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1921 st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name); |
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1922 map = map->l_next; |
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1923 } |
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1924 |
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1925 dlclose(handle); |
0 | 1926 } |
1927 | |
1928 // Loads .dll/.so and | |
1929 // in case of error it checks if .dll/.so was built for the | |
1930 // same architecture as Hotspot is running on | |
1931 | |
1932 void * os::dll_load(const char *filename, char *ebuf, int ebuflen) | |
1933 { | |
1934 void * result= ::dlopen(filename, RTLD_LAZY); | |
1935 if (result != NULL) { | |
1936 // Successful loading | |
1937 return result; | |
1938 } | |
1939 | |
1940 Elf32_Ehdr elf_head; | |
1941 | |
1942 // Read system error message into ebuf | |
1943 // It may or may not be overwritten below | |
1944 ::strncpy(ebuf, ::dlerror(), ebuflen-1); | |
1945 ebuf[ebuflen-1]='\0'; | |
1946 int diag_msg_max_length=ebuflen-strlen(ebuf); | |
1947 char* diag_msg_buf=ebuf+strlen(ebuf); | |
1948 | |
1949 if (diag_msg_max_length==0) { | |
1950 // No more space in ebuf for additional diagnostics message | |
1951 return NULL; | |
1952 } | |
1953 | |
1954 | |
1955 int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); | |
1956 | |
1957 if (file_descriptor < 0) { | |
1958 // Can't open library, report dlerror() message | |
1959 return NULL; | |
1960 } | |
1961 | |
1962 bool failed_to_read_elf_head= | |
1963 (sizeof(elf_head)!= | |
1964 (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ; | |
1965 | |
1966 ::close(file_descriptor); | |
1967 if (failed_to_read_elf_head) { | |
1968 // file i/o error - report dlerror() msg | |
1969 return NULL; | |
1970 } | |
1971 | |
1972 typedef struct { | |
1973 Elf32_Half code; // Actual value as defined in elf.h | |
1974 Elf32_Half compat_class; // Compatibility of archs at VM's sense | |
1975 char elf_class; // 32 or 64 bit | |
1976 char endianess; // MSB or LSB | |
1977 char* name; // String representation | |
1978 } arch_t; | |
1979 | |
1980 static const arch_t arch_array[]={ | |
1981 {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
1982 {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
1983 {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, | |
1984 {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, | |
1985 {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
1986 {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
1987 {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, | |
1988 {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, | |
1681
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1989 {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}, |
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1990 {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM 32"} |
0 | 1991 }; |
1992 | |
1993 #if (defined IA32) | |
1994 static Elf32_Half running_arch_code=EM_386; | |
1995 #elif (defined AMD64) | |
1996 static Elf32_Half running_arch_code=EM_X86_64; | |
1997 #elif (defined IA64) | |
1998 static Elf32_Half running_arch_code=EM_IA_64; | |
1999 #elif (defined __sparc) && (defined _LP64) | |
2000 static Elf32_Half running_arch_code=EM_SPARCV9; | |
2001 #elif (defined __sparc) && (!defined _LP64) | |
2002 static Elf32_Half running_arch_code=EM_SPARC; | |
2003 #elif (defined __powerpc64__) | |
2004 static Elf32_Half running_arch_code=EM_PPC64; | |
2005 #elif (defined __powerpc__) | |
2006 static Elf32_Half running_arch_code=EM_PPC; | |
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2007 #elif (defined ARM) |
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2008 static Elf32_Half running_arch_code=EM_ARM; |
0 | 2009 #else |
2010 #error Method os::dll_load requires that one of following is defined:\ | |
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2011 IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM |
0 | 2012 #endif |
2013 | |
2014 // Identify compatability class for VM's architecture and library's architecture | |
2015 // Obtain string descriptions for architectures | |
2016 | |
2017 arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; | |
2018 int running_arch_index=-1; | |
2019 | |
2020 for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) { | |
2021 if (running_arch_code == arch_array[i].code) { | |
2022 running_arch_index = i; | |
2023 } | |
2024 if (lib_arch.code == arch_array[i].code) { | |
2025 lib_arch.compat_class = arch_array[i].compat_class; | |
2026 lib_arch.name = arch_array[i].name; | |
2027 } | |
2028 } | |
2029 | |
2030 assert(running_arch_index != -1, | |
2031 "Didn't find running architecture code (running_arch_code) in arch_array"); | |
2032 if (running_arch_index == -1) { | |
2033 // Even though running architecture detection failed | |
2034 // we may still continue with reporting dlerror() message | |
2035 return NULL; | |
2036 } | |
2037 | |
2038 if (lib_arch.endianess != arch_array[running_arch_index].endianess) { | |
2039 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); | |
2040 return NULL; | |
2041 } | |
2042 | |
2043 if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { | |
2044 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); | |
2045 return NULL; | |
2046 } | |
2047 | |
2048 if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { | |
2049 if ( lib_arch.name!=NULL ) { | |
2050 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2051 " (Possible cause: can't load %s-bit .so on a %s-bit platform)", | |
2052 lib_arch.name, arch_array[running_arch_index].name); | |
2053 } else { | |
2054 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2055 " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", | |
2056 lib_arch.code, | |
2057 arch_array[running_arch_index].name); | |
2058 } | |
2059 } | |
2060 | |
2061 return NULL; | |
2062 } | |
2063 | |
242 | 2064 void* os::dll_lookup(void* handle, const char* name) { |
2065 return dlsym(handle, name); | |
2066 } | |
0 | 2067 |
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2068 void* os::get_default_process_handle() { |
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2069 return (void*)::dlopen(NULL, RTLD_LAZY); |
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2070 } |
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2071 |
1980
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2072 int os::stat(const char *path, struct stat *sbuf) { |
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2073 char pathbuf[MAX_PATH]; |
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2074 if (strlen(path) > MAX_PATH - 1) { |
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2075 errno = ENAMETOOLONG; |
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2076 return -1; |
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|
2077 } |
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|
2078 os::native_path(strcpy(pathbuf, path)); |
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2079 return ::stat(pathbuf, sbuf); |
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|
2080 } |
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|
2081 |
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|
2082 static bool _print_ascii_file(const char* filename, outputStream* st) { |
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2083 int fd = ::open(filename, O_RDONLY); |
0 | 2084 if (fd == -1) { |
2085 return false; | |
2086 } | |
2087 | |
2088 char buf[32]; | |
2089 int bytes; | |
1980
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2090 while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) { |
0 | 2091 st->print_raw(buf, bytes); |
2092 } | |
2093 | |
1980
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2094 ::close(fd); |
0 | 2095 |
2096 return true; | |
2097 } | |
2098 | |
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2099 void os::print_os_info_brief(outputStream* st) { |
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2100 os::Solaris::print_distro_info(st); |
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|
2101 |
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|
2102 os::Posix::print_uname_info(st); |
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|
2103 |
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|
2104 os::Solaris::print_libversion_info(st); |
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|
2105 } |
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|
2106 |
0 | 2107 void os::print_os_info(outputStream* st) { |
2108 st->print("OS:"); | |
2109 | |
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2110 os::Solaris::print_distro_info(st); |
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|
2111 |
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2112 os::Posix::print_uname_info(st); |
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|
2113 |
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2114 os::Solaris::print_libversion_info(st); |
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2115 |
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2116 os::Posix::print_rlimit_info(st); |
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2117 |
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2118 os::Posix::print_load_average(st); |
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|
2119 } |
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2120 |
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2121 void os::Solaris::print_distro_info(outputStream* st) { |
0 | 2122 if (!_print_ascii_file("/etc/release", st)) { |
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2123 st->print("Solaris"); |
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|
2124 } |
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7165755: OS Information much longer on linux than other platforms
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|
2125 st->cr(); |
7432b9db36ff
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diff
changeset
|
2126 } |
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diff
changeset
|
2127 |
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7165755: OS Information much longer on linux than other platforms
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|
2128 void os::Solaris::print_libversion_info(outputStream* st) { |
7432b9db36ff
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|
2129 if (os::Solaris::T2_libthread()) { |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
changeset
|
2130 st->print(" (T2 libthread)"); |
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diff
changeset
|
2131 } |
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|
2132 else { |
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|
2133 st->print(" (T1 libthread)"); |
0 | 2134 } |
2135 st->cr(); | |
6080
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2136 } |
0 | 2137 |
2138 static bool check_addr0(outputStream* st) { | |
2139 jboolean status = false; | |
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2140 int fd = ::open("/proc/self/map",O_RDONLY); |
0 | 2141 if (fd >= 0) { |
2142 prmap_t p; | |
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2143 while(::read(fd, &p, sizeof(p)) > 0) { |
0 | 2144 if (p.pr_vaddr == 0x0) { |
2145 st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname); | |
2146 st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname); | |
2147 st->print("Access:"); | |
2148 st->print("%s",(p.pr_mflags & MA_READ) ? "r" : "-"); | |
2149 st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-"); | |
2150 st->print("%s",(p.pr_mflags & MA_EXEC) ? "x" : "-"); | |
2151 st->cr(); | |
2152 status = true; | |
2153 } | |
2154 } | |
17707 | 2155 ::close(fd); |
0 | 2156 } |
2157 return status; | |
2158 } | |
2159 | |
3800
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|
2160 void os::pd_print_cpu_info(outputStream* st) { |
bf6481e5f96d
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|
2161 // Nothing to do for now. |
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|
2162 } |
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|
2163 |
0 | 2164 void os::print_memory_info(outputStream* st) { |
2165 st->print("Memory:"); | |
2166 st->print(" %dk page", os::vm_page_size()>>10); | |
2167 st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10); | |
2168 st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10); | |
2169 st->cr(); | |
2170 (void) check_addr0(st); | |
2171 } | |
2172 | |
2173 void os::print_siginfo(outputStream* st, void* siginfo) { | |
14410 | 2174 const siginfo_t* si = (const siginfo_t*)siginfo; |
2175 | |
2176 os::Posix::print_siginfo_brief(st, si); | |
2177 | |
2178 if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && | |
0 | 2179 UseSharedSpaces) { |
2180 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
2181 if (mapinfo->is_in_shared_space(si->si_addr)) { | |
2182 st->print("\n\nError accessing class data sharing archive." \ | |
2183 " Mapped file inaccessible during execution, " \ | |
2184 " possible disk/network problem."); | |
2185 } | |
2186 } | |
2187 st->cr(); | |
2188 } | |
2189 | |
2190 // Moved from whole group, because we need them here for diagnostic | |
2191 // prints. | |
2192 #define OLDMAXSIGNUM 32 | |
2193 static int Maxsignum = 0; | |
2194 static int *ourSigFlags = NULL; | |
2195 | |
2196 extern "C" void sigINTRHandler(int, siginfo_t*, void*); | |
2197 | |
2198 int os::Solaris::get_our_sigflags(int sig) { | |
2199 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2200 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2201 return ourSigFlags[sig]; | |
2202 } | |
2203 | |
2204 void os::Solaris::set_our_sigflags(int sig, int flags) { | |
2205 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2206 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2207 ourSigFlags[sig] = flags; | |
2208 } | |
2209 | |
2210 | |
2211 static const char* get_signal_handler_name(address handler, | |
2212 char* buf, int buflen) { | |
2213 int offset; | |
2214 bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); | |
2215 if (found) { | |
2216 // skip directory names | |
2217 const char *p1, *p2; | |
2218 p1 = buf; | |
2219 size_t len = strlen(os::file_separator()); | |
2220 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
2221 jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); | |
2222 } else { | |
2223 jio_snprintf(buf, buflen, PTR_FORMAT, handler); | |
2224 } | |
2225 return buf; | |
2226 } | |
2227 | |
2228 static void print_signal_handler(outputStream* st, int sig, | |
2229 char* buf, size_t buflen) { | |
2230 struct sigaction sa; | |
2231 | |
2232 sigaction(sig, NULL, &sa); | |
2233 | |
2234 st->print("%s: ", os::exception_name(sig, buf, buflen)); | |
2235 | |
2236 address handler = (sa.sa_flags & SA_SIGINFO) | |
2237 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) | |
2238 : CAST_FROM_FN_PTR(address, sa.sa_handler); | |
2239 | |
2240 if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { | |
2241 st->print("SIG_DFL"); | |
2242 } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { | |
2243 st->print("SIG_IGN"); | |
2244 } else { | |
2245 st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); | |
2246 } | |
2247 | |
14410 | 2248 st->print(", sa_mask[0]="); |
2249 os::Posix::print_signal_set_short(st, &sa.sa_mask); | |
0 | 2250 |
2251 address rh = VMError::get_resetted_sighandler(sig); | |
2252 // May be, handler was resetted by VMError? | |
2253 if(rh != NULL) { | |
2254 handler = rh; | |
2255 sa.sa_flags = VMError::get_resetted_sigflags(sig); | |
2256 } | |
2257 | |
14410 | 2258 st->print(", sa_flags="); |
2259 os::Posix::print_sa_flags(st, sa.sa_flags); | |
0 | 2260 |
2261 // Check: is it our handler? | |
2262 if(handler == CAST_FROM_FN_PTR(address, signalHandler) || | |
2263 handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) { | |
2264 // It is our signal handler | |
2265 // check for flags | |
2266 if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
2267 st->print( | |
2268 ", flags was changed from " PTR32_FORMAT ", consider using jsig library", | |
2269 os::Solaris::get_our_sigflags(sig)); | |
2270 } | |
2271 } | |
2272 st->cr(); | |
2273 } | |
2274 | |
2275 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
2276 st->print_cr("Signal Handlers:"); | |
2277 print_signal_handler(st, SIGSEGV, buf, buflen); | |
2278 print_signal_handler(st, SIGBUS , buf, buflen); | |
2279 print_signal_handler(st, SIGFPE , buf, buflen); | |
2280 print_signal_handler(st, SIGPIPE, buf, buflen); | |
2281 print_signal_handler(st, SIGXFSZ, buf, buflen); | |
2282 print_signal_handler(st, SIGILL , buf, buflen); | |
2283 print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen); | |
2284 print_signal_handler(st, ASYNC_SIGNAL, buf, buflen); | |
2285 print_signal_handler(st, BREAK_SIGNAL, buf, buflen); | |
2286 print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen); | |
2287 print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); | |
2288 print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen); | |
2289 print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen); | |
2290 print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen); | |
2291 } | |
2292 | |
2293 static char saved_jvm_path[MAXPATHLEN] = { 0 }; | |
2294 | |
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2295 // Find the full path to the current module, libjvm.so |
0 | 2296 void os::jvm_path(char *buf, jint buflen) { |
2297 // Error checking. | |
2298 if (buflen < MAXPATHLEN) { | |
2299 assert(false, "must use a large-enough buffer"); | |
2300 buf[0] = '\0'; | |
2301 return; | |
2302 } | |
2303 // Lazy resolve the path to current module. | |
2304 if (saved_jvm_path[0] != 0) { | |
2305 strcpy(buf, saved_jvm_path); | |
2306 return; | |
2307 } | |
2308 | |
2309 Dl_info dlinfo; | |
2310 int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo); | |
2311 assert(ret != 0, "cannot locate libjvm"); | |
11092
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10986
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|
2312 if (ret != 0 && dlinfo.dli_fname != NULL) { |
59b052799158
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|
2313 realpath((char *)dlinfo.dli_fname, buf); |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
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|
2314 } else { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
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diff
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|
2315 buf[0] = '\0'; |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
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|
2316 return; |
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|
2317 } |
0 | 2318 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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2191
diff
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|
2319 if (Arguments::created_by_gamma_launcher()) { |
0 | 2320 // Support for the gamma launcher. Typical value for buf is |
2321 // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at | |
2322 // the right place in the string, then assume we are installed in a JDK and | |
2323 // we're done. Otherwise, check for a JAVA_HOME environment variable and fix | |
2324 // up the path so it looks like libjvm.so is installed there (append a | |
2325 // fake suffix hotspot/libjvm.so). | |
2326 const char *p = buf + strlen(buf) - 1; | |
2327 for (int count = 0; p > buf && count < 5; ++count) { | |
2328 for (--p; p > buf && *p != '/'; --p) | |
2329 /* empty */ ; | |
2330 } | |
2331 | |
2332 if (strncmp(p, "/jre/lib/", 9) != 0) { | |
2333 // Look for JAVA_HOME in the environment. | |
2334 char* java_home_var = ::getenv("JAVA_HOME"); | |
2335 if (java_home_var != NULL && java_home_var[0] != 0) { | |
2336 char cpu_arch[12]; | |
1642 | 2337 char* jrelib_p; |
2338 int len; | |
0 | 2339 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
2340 #ifdef _LP64 | |
2341 // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9. | |
2342 if (strcmp(cpu_arch, "sparc") == 0) { | |
2343 strcat(cpu_arch, "v9"); | |
2344 } else if (strcmp(cpu_arch, "i386") == 0) { | |
2345 strcpy(cpu_arch, "amd64"); | |
2346 } | |
2347 #endif | |
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|
2348 // Check the current module name "libjvm.so". |
0 | 2349 p = strrchr(buf, '/'); |
2350 assert(strstr(p, "/libjvm") == p, "invalid library name"); | |
2351 | |
2352 realpath(java_home_var, buf); | |
1642 | 2353 // determine if this is a legacy image or modules image |
2354 // modules image doesn't have "jre" subdirectory | |
2355 len = strlen(buf); | |
17567 | 2356 assert(len < buflen, "Ran out of buffer space"); |
1642 | 2357 jrelib_p = buf + len; |
2358 snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch); | |
2359 if (0 != access(buf, F_OK)) { | |
2360 snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch); | |
2361 } | |
2362 | |
0 | 2363 if (0 == access(buf, F_OK)) { |
7456
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changeset
|
2364 // Use current module name "libjvm.so" |
1642 | 2365 len = strlen(buf); |
7456
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7206
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changeset
|
2366 snprintf(buf + len, buflen-len, "/hotspot/libjvm.so"); |
0 | 2367 } else { |
2368 // Go back to path of .so | |
2369 realpath((char *)dlinfo.dli_fname, buf); | |
2370 } | |
2371 } | |
2372 } | |
2373 } | |
2374 | |
17567 | 2375 strncpy(saved_jvm_path, buf, MAXPATHLEN); |
0 | 2376 } |
2377 | |
2378 | |
2379 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
2380 // no prefix required, not even "_" | |
2381 } | |
2382 | |
2383 | |
2384 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
2385 // no suffix required | |
2386 } | |
2387 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
2388 // This method is a copy of JDK's sysGetLastErrorString |
828eafbd85cc
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ikrylov
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diff
changeset
|
2389 // from src/solaris/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2390 |
828eafbd85cc
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diff
changeset
|
2391 size_t os::lasterror(char *buf, size_t len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2392 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2393 if (errno == 0) return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
2394 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2395 const char *s = ::strerror(errno); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2396 size_t n = ::strlen(s); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2397 if (n >= len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2398 n = len - 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2399 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2400 ::strncpy(buf, s, n); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2401 buf[n] = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2402 return n; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
2403 } |
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diff
changeset
|
2404 |
0 | 2405 |
2406 // sun.misc.Signal | |
2407 | |
2408 extern "C" { | |
2409 static void UserHandler(int sig, void *siginfo, void *context) { | |
2410 // Ctrl-C is pressed during error reporting, likely because the error | |
2411 // handler fails to abort. Let VM die immediately. | |
2412 if (sig == SIGINT && is_error_reported()) { | |
2413 os::die(); | |
2414 } | |
2415 | |
2416 os::signal_notify(sig); | |
2417 // We do not need to reinstate the signal handler each time... | |
2418 } | |
2419 } | |
2420 | |
2421 void* os::user_handler() { | |
2422 return CAST_FROM_FN_PTR(void*, UserHandler); | |
2423 } | |
2424 | |
10405 | 2425 class Semaphore : public StackObj { |
2426 public: | |
2427 Semaphore(); | |
2428 ~Semaphore(); | |
2429 void signal(); | |
2430 void wait(); | |
2431 bool trywait(); | |
2432 bool timedwait(unsigned int sec, int nsec); | |
2433 private: | |
2434 sema_t _semaphore; | |
2435 }; | |
2436 | |
2437 | |
2438 Semaphore::Semaphore() { | |
2439 sema_init(&_semaphore, 0, NULL, NULL); | |
2440 } | |
2441 | |
2442 Semaphore::~Semaphore() { | |
2443 sema_destroy(&_semaphore); | |
2444 } | |
2445 | |
2446 void Semaphore::signal() { | |
2447 sema_post(&_semaphore); | |
2448 } | |
2449 | |
2450 void Semaphore::wait() { | |
2451 sema_wait(&_semaphore); | |
2452 } | |
2453 | |
2454 bool Semaphore::trywait() { | |
2455 return sema_trywait(&_semaphore) == 0; | |
2456 } | |
2457 | |
2458 bool Semaphore::timedwait(unsigned int sec, int nsec) { | |
2459 struct timespec ts; | |
2460 unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec); | |
2461 | |
2462 while (1) { | |
2463 int result = sema_timedwait(&_semaphore, &ts); | |
2464 if (result == 0) { | |
2465 return true; | |
2466 } else if (errno == EINTR) { | |
2467 continue; | |
2468 } else if (errno == ETIME) { | |
2469 return false; | |
2470 } else { | |
2471 return false; | |
2472 } | |
2473 } | |
2474 } | |
2475 | |
0 | 2476 extern "C" { |
2477 typedef void (*sa_handler_t)(int); | |
2478 typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); | |
2479 } | |
2480 | |
2481 void* os::signal(int signal_number, void* handler) { | |
2482 struct sigaction sigAct, oldSigAct; | |
2483 sigfillset(&(sigAct.sa_mask)); | |
2484 sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND; | |
2485 sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); | |
2486 | |
2487 if (sigaction(signal_number, &sigAct, &oldSigAct)) | |
2488 // -1 means registration failed | |
2489 return (void *)-1; | |
2490 | |
2491 return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); | |
2492 } | |
2493 | |
2494 void os::signal_raise(int signal_number) { | |
2495 raise(signal_number); | |
2496 } | |
2497 | |
2498 /* | |
2499 * The following code is moved from os.cpp for making this | |
2500 * code platform specific, which it is by its very nature. | |
2501 */ | |
2502 | |
2503 // a counter for each possible signal value | |
2504 static int Sigexit = 0; | |
2505 static int Maxlibjsigsigs; | |
2506 static jint *pending_signals = NULL; | |
2507 static int *preinstalled_sigs = NULL; | |
2508 static struct sigaction *chainedsigactions = NULL; | |
2509 static sema_t sig_sem; | |
2510 typedef int (*version_getting_t)(); | |
2511 version_getting_t os::Solaris::get_libjsig_version = NULL; | |
2512 static int libjsigversion = NULL; | |
2513 | |
2514 int os::sigexitnum_pd() { | |
2515 assert(Sigexit > 0, "signal memory not yet initialized"); | |
2516 return Sigexit; | |
2517 } | |
2518 | |
2519 void os::Solaris::init_signal_mem() { | |
2520 // Initialize signal structures | |
2521 Maxsignum = SIGRTMAX; | |
2522 Sigexit = Maxsignum+1; | |
2523 assert(Maxsignum >0, "Unable to obtain max signal number"); | |
2524 | |
2525 Maxlibjsigsigs = Maxsignum; | |
2526 | |
2527 // pending_signals has one int per signal | |
2528 // The additional signal is for SIGEXIT - exit signal to signal_thread | |
6197 | 2529 pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1), mtInternal); |
0 | 2530 memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1))); |
2531 | |
2532 if (UseSignalChaining) { | |
2533 chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction) | |
6197 | 2534 * (Maxsignum + 1), mtInternal); |
0 | 2535 memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1))); |
6197 | 2536 preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal); |
0 | 2537 memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1))); |
2538 } | |
6197 | 2539 ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ), mtInternal); |
0 | 2540 memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1)); |
2541 } | |
2542 | |
2543 void os::signal_init_pd() { | |
2544 int ret; | |
2545 | |
2546 ret = ::sema_init(&sig_sem, 0, NULL, NULL); | |
2547 assert(ret == 0, "sema_init() failed"); | |
2548 } | |
2549 | |
2550 void os::signal_notify(int signal_number) { | |
2551 int ret; | |
2552 | |
2553 Atomic::inc(&pending_signals[signal_number]); | |
2554 ret = ::sema_post(&sig_sem); | |
2555 assert(ret == 0, "sema_post() failed"); | |
2556 } | |
2557 | |
2558 static int check_pending_signals(bool wait_for_signal) { | |
2559 int ret; | |
2560 while (true) { | |
2561 for (int i = 0; i < Sigexit + 1; i++) { | |
2562 jint n = pending_signals[i]; | |
2563 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
2564 return i; | |
2565 } | |
2566 } | |
2567 if (!wait_for_signal) { | |
2568 return -1; | |
2569 } | |
2570 JavaThread *thread = JavaThread::current(); | |
2571 ThreadBlockInVM tbivm(thread); | |
2572 | |
2573 bool threadIsSuspended; | |
2574 do { | |
2575 thread->set_suspend_equivalent(); | |
2576 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
2577 while((ret = ::sema_wait(&sig_sem)) == EINTR) | |
2578 ; | |
2579 assert(ret == 0, "sema_wait() failed"); | |
2580 | |
2581 // were we externally suspended while we were waiting? | |
2582 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
2583 if (threadIsSuspended) { | |
2584 // | |
2585 // The semaphore has been incremented, but while we were waiting | |
2586 // another thread suspended us. We don't want to continue running | |
2587 // while suspended because that would surprise the thread that | |
2588 // suspended us. | |
2589 // | |
2590 ret = ::sema_post(&sig_sem); | |
2591 assert(ret == 0, "sema_post() failed"); | |
2592 | |
2593 thread->java_suspend_self(); | |
2594 } | |
2595 } while (threadIsSuspended); | |
2596 } | |
2597 } | |
2598 | |
2599 int os::signal_lookup() { | |
2600 return check_pending_signals(false); | |
2601 } | |
2602 | |
2603 int os::signal_wait() { | |
2604 return check_pending_signals(true); | |
2605 } | |
2606 | |
2607 //////////////////////////////////////////////////////////////////////////////// | |
2608 // Virtual Memory | |
2609 | |
2610 static int page_size = -1; | |
2611 | |
2612 // The mmap MAP_ALIGN flag is supported on Solaris 9 and later. init_2() will | |
2613 // clear this var if support is not available. | |
2614 static bool has_map_align = true; | |
2615 | |
2616 int os::vm_page_size() { | |
2617 assert(page_size != -1, "must call os::init"); | |
2618 return page_size; | |
2619 } | |
2620 | |
2621 // Solaris allocates memory by pages. | |
2622 int os::vm_allocation_granularity() { | |
2623 assert(page_size != -1, "must call os::init"); | |
2624 return page_size; | |
2625 } | |
2626 | |
10969
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2627 static bool recoverable_mmap_error(int err) { |
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2628 // See if the error is one we can let the caller handle. This |
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2629 // list of errno values comes from the Solaris mmap(2) man page. |
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2630 switch (err) { |
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2631 case EBADF: |
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2632 case EINVAL: |
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|
2633 case ENOTSUP: |
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2634 // let the caller deal with these errors |
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2635 return true; |
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|
2636 |
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|
2637 default: |
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2638 // Any remaining errors on this OS can cause our reserved mapping |
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2639 // to be lost. That can cause confusion where different data |
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|
2640 // structures think they have the same memory mapped. The worst |
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2641 // scenario is if both the VM and a library think they have the |
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2642 // same memory mapped. |
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2643 return false; |
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2644 } |
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2645 } |
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2646 |
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2647 static void warn_fail_commit_memory(char* addr, size_t bytes, bool exec, |
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2648 int err) { |
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|
2649 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
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|
2650 ", %d) failed; error='%s' (errno=%d)", addr, bytes, exec, |
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|
2651 strerror(err), err); |
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|
2652 } |
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2653 |
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|
2654 static void warn_fail_commit_memory(char* addr, size_t bytes, |
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2655 size_t alignment_hint, bool exec, |
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|
2656 int err) { |
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|
2657 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
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|
2658 ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, bytes, |
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|
2659 alignment_hint, exec, strerror(err), err); |
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|
2660 } |
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|
2661 |
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|
2662 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, bool exec) { |
656 | 2663 int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
0 | 2664 size_t size = bytes; |
3885 | 2665 char *res = Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, prot); |
2666 if (res != NULL) { | |
2667 if (UseNUMAInterleaving) { | |
2668 numa_make_global(addr, bytes); | |
2669 } | |
10969
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2670 return 0; |
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|
2671 } |
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|
2672 |
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|
2673 int err = errno; // save errno from mmap() call in mmap_chunk() |
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|
2674 |
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|
2675 if (!recoverable_mmap_error(err)) { |
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|
2676 warn_fail_commit_memory(addr, bytes, exec, err); |
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|
2677 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, "committing reserved memory."); |
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|
2678 } |
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|
2679 |
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|
2680 return err; |
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|
2681 } |
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|
2682 |
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|
2683 bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) { |
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|
2684 return Solaris::commit_memory_impl(addr, bytes, exec) == 0; |
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|
2685 } |
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|
2686 |
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|
2687 void os::pd_commit_memory_or_exit(char* addr, size_t bytes, bool exec, |
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|
2688 const char* mesg) { |
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|
2689 assert(mesg != NULL, "mesg must be specified"); |
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|
2690 int err = os::Solaris::commit_memory_impl(addr, bytes, exec); |
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|
2691 if (err != 0) { |
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|
2692 // the caller wants all commit errors to exit with the specified mesg: |
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|
2693 warn_fail_commit_memory(addr, bytes, exec, err); |
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|
2694 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, mesg); |
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|
2695 } |
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|
2696 } |
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|
2697 |
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|
2698 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, |
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|
2699 size_t alignment_hint, bool exec) { |
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|
2700 int err = Solaris::commit_memory_impl(addr, bytes, exec); |
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|
2701 if (err == 0) { |
11111
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|
2702 if (UseLargePages && (alignment_hint > (size_t)vm_page_size())) { |
0 | 2703 // If the large page size has been set and the VM |
2704 // is using large pages, use the large page size | |
2705 // if it is smaller than the alignment hint. This is | |
2706 // a case where the VM wants to use a larger alignment size | |
2707 // for its own reasons but still want to use large pages | |
2708 // (which is what matters to setting the mpss range. | |
2709 size_t page_size = 0; | |
2710 if (large_page_size() < alignment_hint) { | |
2711 assert(UseLargePages, "Expected to be here for large page use only"); | |
2712 page_size = large_page_size(); | |
2713 } else { | |
2714 // If the alignment hint is less than the large page | |
2715 // size, the VM wants a particular alignment (thus the hint) | |
2716 // for internal reasons. Try to set the mpss range using | |
2717 // the alignment_hint. | |
2718 page_size = alignment_hint; | |
2719 } | |
2720 // Since this is a hint, ignore any failures. | |
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|
2721 (void)Solaris::setup_large_pages(addr, bytes, page_size); |
0 | 2722 } |
10969
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|
2723 } |
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|
2724 return err; |
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|
2725 } |
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|
2726 |
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|
2727 bool os::pd_commit_memory(char* addr, size_t bytes, size_t alignment_hint, |
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|
2728 bool exec) { |
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diff
changeset
|
2729 return Solaris::commit_memory_impl(addr, bytes, alignment_hint, exec) == 0; |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2730 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2731 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2732 void os::pd_commit_memory_or_exit(char* addr, size_t bytes, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2733 size_t alignment_hint, bool exec, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2734 const char* mesg) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2735 assert(mesg != NULL, "mesg must be specified"); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2736 int err = os::Solaris::commit_memory_impl(addr, bytes, alignment_hint, exec); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2737 if (err != 0) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2738 // the caller wants all commit errors to exit with the specified mesg: |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2739 warn_fail_commit_memory(addr, bytes, alignment_hint, exec, err); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2740 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, mesg); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2741 } |
0 | 2742 } |
2743 | |
2744 // Uncommit the pages in a specified region. | |
6197 | 2745 void os::pd_free_memory(char* addr, size_t bytes, size_t alignment_hint) { |
0 | 2746 if (madvise(addr, bytes, MADV_FREE) < 0) { |
2747 debug_only(warning("MADV_FREE failed.")); | |
2748 return; | |
2749 } | |
2750 } | |
2751 | |
6197 | 2752 bool os::pd_create_stack_guard_pages(char* addr, size_t size) { |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2753 return os::commit_memory(addr, size, !ExecMem); |
1320
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2754 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2755 |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2756 bool os::remove_stack_guard_pages(char* addr, size_t size) { |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2757 return os::uncommit_memory(addr, size); |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2758 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2759 |
0 | 2760 // Change the page size in a given range. |
6197 | 2761 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { |
0 | 2762 assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned."); |
2763 assert((intptr_t)(addr + bytes) % alignment_hint == 0, "End should be aligned."); | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
2764 if (UseLargePages) { |
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
2765 Solaris::setup_large_pages(addr, bytes, alignment_hint); |
3292
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
2766 } |
0 | 2767 } |
2768 | |
2769 // Tell the OS to make the range local to the first-touching LWP | |
141 | 2770 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { |
0 | 2771 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); |
2772 if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) { | |
2773 debug_only(warning("MADV_ACCESS_LWP failed.")); | |
2774 } | |
2775 } | |
2776 | |
2777 // Tell the OS that this range would be accessed from different LWPs. | |
2778 void os::numa_make_global(char *addr, size_t bytes) { | |
2779 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); | |
2780 if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) { | |
2781 debug_only(warning("MADV_ACCESS_MANY failed.")); | |
2782 } | |
2783 } | |
2784 | |
2785 // Get the number of the locality groups. | |
2786 size_t os::numa_get_groups_num() { | |
2787 size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie()); | |
2788 return n != -1 ? n : 1; | |
2789 } | |
2790 | |
2791 // Get a list of leaf locality groups. A leaf lgroup is group that | |
2792 // doesn't have any children. Typical leaf group is a CPU or a CPU/memory | |
2793 // board. An LWP is assigned to one of these groups upon creation. | |
2794 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
2795 if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) { | |
2796 ids[0] = 0; | |
2797 return 1; | |
2798 } | |
2799 int result_size = 0, top = 1, bottom = 0, cur = 0; | |
2800 for (int k = 0; k < size; k++) { | |
2801 int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur], | |
2802 (Solaris::lgrp_id_t*)&ids[top], size - top); | |
2803 if (r == -1) { | |
2804 ids[0] = 0; | |
2805 return 1; | |
2806 } | |
2807 if (!r) { | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2808 // That's a leaf node. |
0 | 2809 assert (bottom <= cur, "Sanity check"); |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2810 // Check if the node has memory |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2811 if (Solaris::lgrp_resources(Solaris::lgrp_cookie(), ids[cur], |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2812 NULL, 0, LGRP_RSRC_MEM) > 0) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2813 ids[bottom++] = ids[cur]; |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2814 } |
0 | 2815 } |
2816 top += r; | |
2817 cur++; | |
2818 } | |
268
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2819 if (bottom == 0) { |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2820 // Handle a situation, when the OS reports no memory available. |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2821 // Assume UMA architecture. |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2822 ids[0] = 0; |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2823 return 1; |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2824 } |
0 | 2825 return bottom; |
2826 } | |
2827 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
144
diff
changeset
|
2828 // Detect the topology change. Typically happens during CPU plugging-unplugging. |
0 | 2829 bool os::numa_topology_changed() { |
2830 int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie()); | |
2831 if (is_stale != -1 && is_stale) { | |
2832 Solaris::lgrp_fini(Solaris::lgrp_cookie()); | |
2833 Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER); | |
2834 assert(c != 0, "Failure to initialize LGRP API"); | |
2835 Solaris::set_lgrp_cookie(c); | |
2836 return true; | |
2837 } | |
2838 return false; | |
2839 } | |
2840 | |
2841 // Get the group id of the current LWP. | |
2842 int os::numa_get_group_id() { | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2843 int lgrp_id = Solaris::lgrp_home(P_LWPID, P_MYID); |
0 | 2844 if (lgrp_id == -1) { |
2845 return 0; | |
2846 } | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2847 const int size = os::numa_get_groups_num(); |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2848 int *ids = (int*)alloca(size * sizeof(int)); |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2849 |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2850 // Get the ids of all lgroups with memory; r is the count. |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2851 int r = Solaris::lgrp_resources(Solaris::lgrp_cookie(), lgrp_id, |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2852 (Solaris::lgrp_id_t*)ids, size, LGRP_RSRC_MEM); |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2853 if (r <= 0) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2854 return 0; |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2855 } |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2856 return ids[os::random() % r]; |
0 | 2857 } |
2858 | |
2859 // Request information about the page. | |
2860 bool os::get_page_info(char *start, page_info* info) { | |
2861 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
2862 uint64_t addr = (uintptr_t)start; | |
2863 uint64_t outdata[2]; | |
2864 uint_t validity = 0; | |
2865 | |
2866 if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) { | |
2867 return false; | |
2868 } | |
2869 | |
2870 info->size = 0; | |
2871 info->lgrp_id = -1; | |
2872 | |
2873 if ((validity & 1) != 0) { | |
2874 if ((validity & 2) != 0) { | |
2875 info->lgrp_id = outdata[0]; | |
2876 } | |
2877 if ((validity & 4) != 0) { | |
2878 info->size = outdata[1]; | |
2879 } | |
2880 return true; | |
2881 } | |
2882 return false; | |
2883 } | |
2884 | |
2885 // Scan the pages from start to end until a page different than | |
2886 // the one described in the info parameter is encountered. | |
2887 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
2888 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
2889 const size_t types = sizeof(info_types) / sizeof(info_types[0]); | |
17707 | 2890 uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT + 1]; |
0 | 2891 uint_t validity[MAX_MEMINFO_CNT]; |
2892 | |
2893 size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size); | |
2894 uint64_t p = (uint64_t)start; | |
2895 while (p < (uint64_t)end) { | |
2896 addrs[0] = p; | |
2897 size_t addrs_count = 1; | |
8739
ca9580859cf4
8004697: SIGSEGV on Solaris sparc with -XX:+UseNUMA
stefank
parents:
8067
diff
changeset
|
2898 while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] + page_size < (uint64_t)end) { |
0 | 2899 addrs[addrs_count] = addrs[addrs_count - 1] + page_size; |
2900 addrs_count++; | |
2901 } | |
2902 | |
2903 if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) { | |
2904 return NULL; | |
2905 } | |
2906 | |
2907 size_t i = 0; | |
2908 for (; i < addrs_count; i++) { | |
2909 if ((validity[i] & 1) != 0) { | |
2910 if ((validity[i] & 4) != 0) { | |
2911 if (outdata[types * i + 1] != page_expected->size) { | |
2912 break; | |
2913 } | |
2914 } else | |
2915 if (page_expected->size != 0) { | |
2916 break; | |
2917 } | |
2918 | |
2919 if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) { | |
2920 if (outdata[types * i] != page_expected->lgrp_id) { | |
2921 break; | |
2922 } | |
2923 } | |
2924 } else { | |
2925 return NULL; | |
2926 } | |
2927 } | |
2928 | |
17707 | 2929 if (i < addrs_count) { |
0 | 2930 if ((validity[i] & 2) != 0) { |
2931 page_found->lgrp_id = outdata[types * i]; | |
2932 } else { | |
2933 page_found->lgrp_id = -1; | |
2934 } | |
2935 if ((validity[i] & 4) != 0) { | |
2936 page_found->size = outdata[types * i + 1]; | |
2937 } else { | |
2938 page_found->size = 0; | |
2939 } | |
2940 return (char*)addrs[i]; | |
2941 } | |
2942 | |
2943 p = addrs[addrs_count - 1] + page_size; | |
2944 } | |
2945 return end; | |
2946 } | |
2947 | |
6197 | 2948 bool os::pd_uncommit_memory(char* addr, size_t bytes) { |
0 | 2949 size_t size = bytes; |
2950 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
2951 // uncommitted page. Otherwise, the read/write might succeed if we | |
2952 // have enough swap space to back the physical page. | |
2953 return | |
2954 NULL != Solaris::mmap_chunk(addr, size, | |
2955 MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, | |
2956 PROT_NONE); | |
2957 } | |
2958 | |
2959 char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) { | |
2960 char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0); | |
2961 | |
2962 if (b == MAP_FAILED) { | |
2963 return NULL; | |
2964 } | |
2965 return b; | |
2966 } | |
2967 | |
60
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2968 char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed) { |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2969 char* addr = requested_addr; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2970 int flags = MAP_PRIVATE | MAP_NORESERVE; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2971 |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2972 assert(!(fixed && (alignment_hint > 0)), "alignment hint meaningless with fixed mmap"); |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2973 |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2974 if (fixed) { |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2975 flags |= MAP_FIXED; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2976 } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) { |
0 | 2977 flags |= MAP_ALIGN; |
2978 addr = (char*) alignment_hint; | |
2979 } | |
2980 | |
2981 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
2982 // uncommitted page. Otherwise, the read/write might succeed if we | |
2983 // have enough swap space to back the physical page. | |
60
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2984 return mmap_chunk(addr, bytes, flags, PROT_NONE); |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2985 } |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2986 |
6197 | 2987 char* os::pd_reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) { |
60
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
2988 char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL)); |
0 | 2989 |
2990 guarantee(requested_addr == NULL || requested_addr == addr, | |
2991 "OS failed to return requested mmap address."); | |
2992 return addr; | |
2993 } | |
2994 | |
2995 // Reserve memory at an arbitrary address, only if that area is | |
2996 // available (and not reserved for something else). | |
2997 | |
6197 | 2998 char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
0 | 2999 const int max_tries = 10; |
3000 char* base[max_tries]; | |
3001 size_t size[max_tries]; | |
3002 | |
3003 // Solaris adds a gap between mmap'ed regions. The size of the gap | |
3004 // is dependent on the requested size and the MMU. Our initial gap | |
3005 // value here is just a guess and will be corrected later. | |
3006 bool had_top_overlap = false; | |
3007 bool have_adjusted_gap = false; | |
3008 size_t gap = 0x400000; | |
3009 | |
3010 // Assert only that the size is a multiple of the page size, since | |
3011 // that's all that mmap requires, and since that's all we really know | |
3012 // about at this low abstraction level. If we need higher alignment, | |
3013 // we can either pass an alignment to this method or verify alignment | |
3014 // in one of the methods further up the call chain. See bug 5044738. | |
3015 assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); | |
3016 | |
60
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3017 // Since snv_84, Solaris attempts to honor the address hint - see 5003415. |
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3018 // Give it a try, if the kernel honors the hint we can return immediately. |
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3019 char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false); |
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3020 |
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3021 volatile int err = errno; |
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3022 if (addr == requested_addr) { |
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3023 return addr; |
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3024 } else if (addr != NULL) { |
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3025 pd_unmap_memory(addr, bytes); |
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3026 } |
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3027 |
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3028 if (PrintMiscellaneous && Verbose) { |
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3029 char buf[256]; |
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3030 buf[0] = '\0'; |
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3031 if (addr == NULL) { |
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3032 jio_snprintf(buf, sizeof(buf), ": %s", strerror(err)); |
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3033 } |
2080 | 3034 warning("attempt_reserve_memory_at: couldn't reserve " SIZE_FORMAT " bytes at " |
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3035 PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT |
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3036 "%s", bytes, requested_addr, addr, buf); |
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3037 } |
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3038 |
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3039 // Address hint method didn't work. Fall back to the old method. |
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3040 // In theory, once SNV becomes our oldest supported platform, this |
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3041 // code will no longer be needed. |
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3042 // |
0 | 3043 // Repeatedly allocate blocks until the block is allocated at the |
3044 // right spot. Give up after max_tries. | |
3045 int i; | |
3046 for (i = 0; i < max_tries; ++i) { | |
3047 base[i] = reserve_memory(bytes); | |
3048 | |
3049 if (base[i] != NULL) { | |
3050 // Is this the block we wanted? | |
3051 if (base[i] == requested_addr) { | |
3052 size[i] = bytes; | |
3053 break; | |
3054 } | |
3055 | |
3056 // check that the gap value is right | |
3057 if (had_top_overlap && !have_adjusted_gap) { | |
3058 size_t actual_gap = base[i-1] - base[i] - bytes; | |
3059 if (gap != actual_gap) { | |
3060 // adjust the gap value and retry the last 2 allocations | |
3061 assert(i > 0, "gap adjustment code problem"); | |
3062 have_adjusted_gap = true; // adjust the gap only once, just in case | |
3063 gap = actual_gap; | |
3064 if (PrintMiscellaneous && Verbose) { | |
3065 warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap); | |
3066 } | |
3067 unmap_memory(base[i], bytes); | |
3068 unmap_memory(base[i-1], size[i-1]); | |
3069 i-=2; | |
3070 continue; | |
3071 } | |
3072 } | |
3073 | |
3074 // Does this overlap the block we wanted? Give back the overlapped | |
3075 // parts and try again. | |
3076 // | |
3077 // There is still a bug in this code: if top_overlap == bytes, | |
3078 // the overlap is offset from requested region by the value of gap. | |
3079 // In this case giving back the overlapped part will not work, | |
3080 // because we'll give back the entire block at base[i] and | |
3081 // therefore the subsequent allocation will not generate a new gap. | |
3082 // This could be fixed with a new algorithm that used larger | |
3083 // or variable size chunks to find the requested region - | |
3084 // but such a change would introduce additional complications. | |
3085 // It's rare enough that the planets align for this bug, | |
3086 // so we'll just wait for a fix for 6204603/5003415 which | |
3087 // will provide a mmap flag to allow us to avoid this business. | |
3088 | |
3089 size_t top_overlap = requested_addr + (bytes + gap) - base[i]; | |
3090 if (top_overlap >= 0 && top_overlap < bytes) { | |
3091 had_top_overlap = true; | |
3092 unmap_memory(base[i], top_overlap); | |
3093 base[i] += top_overlap; | |
3094 size[i] = bytes - top_overlap; | |
3095 } else { | |
3096 size_t bottom_overlap = base[i] + bytes - requested_addr; | |
3097 if (bottom_overlap >= 0 && bottom_overlap < bytes) { | |
3098 if (PrintMiscellaneous && Verbose && bottom_overlap == 0) { | |
3099 warning("attempt_reserve_memory_at: possible alignment bug"); | |
3100 } | |
3101 unmap_memory(requested_addr, bottom_overlap); | |
3102 size[i] = bytes - bottom_overlap; | |
3103 } else { | |
3104 size[i] = bytes; | |
3105 } | |
3106 } | |
3107 } | |
3108 } | |
3109 | |
3110 // Give back the unused reserved pieces. | |
3111 | |
3112 for (int j = 0; j < i; ++j) { | |
3113 if (base[j] != NULL) { | |
3114 unmap_memory(base[j], size[j]); | |
3115 } | |
3116 } | |
3117 | |
3118 return (i < max_tries) ? requested_addr : NULL; | |
3119 } | |
3120 | |
6197 | 3121 bool os::pd_release_memory(char* addr, size_t bytes) { |
0 | 3122 size_t size = bytes; |
3123 return munmap(addr, size) == 0; | |
3124 } | |
3125 | |
3126 static bool solaris_mprotect(char* addr, size_t bytes, int prot) { | |
3127 assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()), | |
3128 "addr must be page aligned"); | |
3129 int retVal = mprotect(addr, bytes, prot); | |
3130 return retVal == 0; | |
3131 } | |
3132 | |
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3133 // Protect memory (Used to pass readonly pages through |
0 | 3134 // JNI GetArray<type>Elements with empty arrays.) |
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3135 // Also, used for serialization page and for compressed oops null pointer |
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3136 // checking. |
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3137 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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3138 bool is_committed) { |
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3139 unsigned int p = 0; |
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3140 switch (prot) { |
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3141 case MEM_PROT_NONE: p = PROT_NONE; break; |
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3142 case MEM_PROT_READ: p = PROT_READ; break; |
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3143 case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
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3144 case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; |
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3145 default: |
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3146 ShouldNotReachHere(); |
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3147 } |
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3148 // is_committed is unused. |
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3149 return solaris_mprotect(addr, bytes, p); |
0 | 3150 } |
3151 | |
3152 // guard_memory and unguard_memory only happens within stack guard pages. | |
3153 // Since ISM pertains only to the heap, guard and unguard memory should not | |
3154 /// happen with an ISM region. | |
3155 bool os::guard_memory(char* addr, size_t bytes) { | |
3156 return solaris_mprotect(addr, bytes, PROT_NONE); | |
3157 } | |
3158 | |
3159 bool os::unguard_memory(char* addr, size_t bytes) { | |
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3160 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE); |
0 | 3161 } |
3162 | |
3163 // Large page support | |
3164 static size_t _large_page_size = 0; | |
3165 | |
3166 // Insertion sort for small arrays (descending order). | |
3167 static void insertion_sort_descending(size_t* array, int len) { | |
3168 for (int i = 0; i < len; i++) { | |
3169 size_t val = array[i]; | |
3170 for (size_t key = i; key > 0 && array[key - 1] < val; --key) { | |
3171 size_t tmp = array[key]; | |
3172 array[key] = array[key - 1]; | |
3173 array[key - 1] = tmp; | |
3174 } | |
3175 } | |
3176 } | |
3177 | |
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3178 bool os::Solaris::mpss_sanity_check(bool warn, size_t* page_size) { |
0 | 3179 const unsigned int usable_count = VM_Version::page_size_count(); |
3180 if (usable_count == 1) { | |
3181 return false; | |
3182 } | |
3183 | |
3859 | 3184 // Find the right getpagesizes interface. When solaris 11 is the minimum |
3185 // build platform, getpagesizes() (without the '2') can be called directly. | |
3186 typedef int (*gps_t)(size_t[], int); | |
3187 gps_t gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes2")); | |
3188 if (gps_func == NULL) { | |
3189 gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes")); | |
3190 if (gps_func == NULL) { | |
3191 if (warn) { | |
3192 warning("MPSS is not supported by the operating system."); | |
3193 } | |
3194 return false; | |
3195 } | |
3196 } | |
3197 | |
0 | 3198 // Fill the array of page sizes. |
3859 | 3199 int n = (*gps_func)(_page_sizes, page_sizes_max); |
0 | 3200 assert(n > 0, "Solaris bug?"); |
3859 | 3201 |
0 | 3202 if (n == page_sizes_max) { |
3203 // Add a sentinel value (necessary only if the array was completely filled | |
3204 // since it is static (zeroed at initialization)). | |
3205 _page_sizes[--n] = 0; | |
3206 DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");) | |
3207 } | |
3208 assert(_page_sizes[n] == 0, "missing sentinel"); | |
3859 | 3209 trace_page_sizes("available page sizes", _page_sizes, n); |
0 | 3210 |
3211 if (n == 1) return false; // Only one page size available. | |
3212 | |
3213 // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and | |
3214 // select up to usable_count elements. First sort the array, find the first | |
3215 // acceptable value, then copy the usable sizes to the top of the array and | |
3216 // trim the rest. Make sure to include the default page size :-). | |
3217 // | |
3218 // A better policy could get rid of the 4M limit by taking the sizes of the | |
3219 // important VM memory regions (java heap and possibly the code cache) into | |
3220 // account. | |
3221 insertion_sort_descending(_page_sizes, n); | |
3222 const size_t size_limit = | |
3223 FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes; | |
3224 int beg; | |
3225 for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ; | |
3226 const int end = MIN2((int)usable_count, n) - 1; | |
3227 for (int cur = 0; cur < end; ++cur, ++beg) { | |
3228 _page_sizes[cur] = _page_sizes[beg]; | |
3229 } | |
3230 _page_sizes[end] = vm_page_size(); | |
3231 _page_sizes[end + 1] = 0; | |
3232 | |
3233 if (_page_sizes[end] > _page_sizes[end - 1]) { | |
3234 // Default page size is not the smallest; sort again. | |
3235 insertion_sort_descending(_page_sizes, end + 1); | |
3236 } | |
3237 *page_size = _page_sizes[0]; | |
3238 | |
3859 | 3239 trace_page_sizes("usable page sizes", _page_sizes, end + 1); |
0 | 3240 return true; |
3241 } | |
3242 | |
3318
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3243 void os::large_page_init() { |
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3244 if (UseLargePages) { |
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3245 // print a warning if any large page related flag is specified on command line |
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3246 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || |
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3247 !FLAG_IS_DEFAULT(LargePageSizeInBytes); |
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3248 |
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3249 UseLargePages = Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size); |
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3250 } |
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3251 } |
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3252 |
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3253 bool os::Solaris::setup_large_pages(caddr_t start, size_t bytes, size_t align) { |
0 | 3254 // Signal to OS that we want large pages for addresses |
3255 // from addr, addr + bytes | |
3256 struct memcntl_mha mpss_struct; | |
3257 mpss_struct.mha_cmd = MHA_MAPSIZE_VA; | |
3258 mpss_struct.mha_pagesize = align; | |
3259 mpss_struct.mha_flags = 0; | |
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3260 // Upon successful completion, memcntl() returns 0 |
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3261 if (memcntl(start, bytes, MC_HAT_ADVISE, (caddr_t) &mpss_struct, 0, 0)) { |
0 | 3262 debug_only(warning("Attempt to use MPSS failed.")); |
3263 return false; | |
3264 } | |
3265 return true; | |
3266 } | |
3267 | |
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3268 char* os::reserve_memory_special(size_t size, size_t alignment, char* addr, bool exec) { |
11111
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3269 fatal("os::reserve_memory_special should not be called on Solaris."); |
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3270 return NULL; |
0 | 3271 } |
3272 | |
3273 bool os::release_memory_special(char* base, size_t bytes) { | |
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3274 fatal("os::release_memory_special should not be called on Solaris."); |
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3275 return false; |
0 | 3276 } |
3277 | |
3278 size_t os::large_page_size() { | |
3279 return _large_page_size; | |
3280 } | |
3281 | |
3282 // MPSS allows application to commit large page memory on demand; with ISM | |
3283 // the entire memory region must be allocated as shared memory. | |
3284 bool os::can_commit_large_page_memory() { | |
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3285 return true; |
0 | 3286 } |
3287 | |
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3288 bool os::can_execute_large_page_memory() { |
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3289 return true; |
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3290 } |
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3291 |
0 | 3292 static int os_sleep(jlong millis, bool interruptible) { |
3293 const jlong limit = INT_MAX; | |
3294 jlong prevtime; | |
3295 int res; | |
3296 | |
3297 while (millis > limit) { | |
3298 if ((res = os_sleep(limit, interruptible)) != OS_OK) | |
3299 return res; | |
3300 millis -= limit; | |
3301 } | |
3302 | |
3303 // Restart interrupted polls with new parameters until the proper delay | |
3304 // has been completed. | |
3305 | |
3306 prevtime = getTimeMillis(); | |
3307 | |
3308 while (millis > 0) { | |
3309 jlong newtime; | |
3310 | |
3311 if (!interruptible) { | |
3312 // Following assert fails for os::yield_all: | |
3313 // assert(!thread->is_Java_thread(), "must not be java thread"); | |
3314 res = poll(NULL, 0, millis); | |
3315 } else { | |
3316 JavaThread *jt = JavaThread::current(); | |
3317 | |
3318 INTERRUPTIBLE_NORESTART_VM_ALWAYS(poll(NULL, 0, millis), res, jt, | |
3319 os::Solaris::clear_interrupted); | |
3320 } | |
3321 | |
3322 // INTERRUPTIBLE_NORESTART_VM_ALWAYS returns res == OS_INTRPT for | |
3323 // thread.Interrupt. | |
3324 | |
1967 | 3325 // See c/r 6751923. Poll can return 0 before time |
3326 // has elapsed if time is set via clock_settime (as NTP does). | |
3327 // res == 0 if poll timed out (see man poll RETURN VALUES) | |
3328 // using the logic below checks that we really did | |
3329 // sleep at least "millis" if not we'll sleep again. | |
3330 if( ( res == 0 ) || ((res == OS_ERR) && (errno == EINTR))) { | |
0 | 3331 newtime = getTimeMillis(); |
3332 assert(newtime >= prevtime, "time moving backwards"); | |
3333 /* Doing prevtime and newtime in microseconds doesn't help precision, | |
3334 and trying to round up to avoid lost milliseconds can result in a | |
3335 too-short delay. */ | |
3336 millis -= newtime - prevtime; | |
3337 if(millis <= 0) | |
3338 return OS_OK; | |
3339 prevtime = newtime; | |
3340 } else | |
3341 return res; | |
3342 } | |
3343 | |
3344 return OS_OK; | |
3345 } | |
3346 | |
3347 // Read calls from inside the vm need to perform state transitions | |
3348 size_t os::read(int fd, void *buf, unsigned int nBytes) { | |
3349 INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); | |
3350 } | |
3351 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
3352 size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
3353 INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3354 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
3355 |
0 | 3356 int os::sleep(Thread* thread, jlong millis, bool interruptible) { |
3357 assert(thread == Thread::current(), "thread consistency check"); | |
3358 | |
3359 // TODO-FIXME: this should be removed. | |
3360 // On Solaris machines (especially 2.5.1) we found that sometimes the VM gets into a live lock | |
3361 // situation with a JavaThread being starved out of a lwp. The kernel doesn't seem to generate | |
3362 // a SIGWAITING signal which would enable the threads library to create a new lwp for the starving | |
3363 // thread. We suspect that because the Watcher thread keeps waking up at periodic intervals the kernel | |
3364 // is fooled into believing that the system is making progress. In the code below we block the | |
3365 // the watcher thread while safepoint is in progress so that it would not appear as though the | |
3366 // system is making progress. | |
3367 if (!Solaris::T2_libthread() && | |
3368 thread->is_Watcher_thread() && SafepointSynchronize::is_synchronizing() && !Arguments::has_profile()) { | |
3369 // We now try to acquire the threads lock. Since this lock is held by the VM thread during | |
3370 // the entire safepoint, the watcher thread will line up here during the safepoint. | |
3371 Threads_lock->lock_without_safepoint_check(); | |
3372 Threads_lock->unlock(); | |
3373 } | |
3374 | |
3375 if (thread->is_Java_thread()) { | |
3376 // This is a JavaThread so we honor the _thread_blocked protocol | |
3377 // even for sleeps of 0 milliseconds. This was originally done | |
3378 // as a workaround for bug 4338139. However, now we also do it | |
3379 // to honor the suspend-equivalent protocol. | |
3380 | |
3381 JavaThread *jt = (JavaThread *) thread; | |
3382 ThreadBlockInVM tbivm(jt); | |
3383 | |
3384 jt->set_suspend_equivalent(); | |
3385 // cleared by handle_special_suspend_equivalent_condition() or | |
3386 // java_suspend_self() via check_and_wait_while_suspended() | |
3387 | |
3388 int ret_code; | |
3389 if (millis <= 0) { | |
3390 thr_yield(); | |
3391 ret_code = 0; | |
3392 } else { | |
3393 // The original sleep() implementation did not create an | |
3394 // OSThreadWaitState helper for sleeps of 0 milliseconds. | |
3395 // I'm preserving that decision for now. | |
3396 OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */); | |
3397 | |
3398 ret_code = os_sleep(millis, interruptible); | |
3399 } | |
3400 | |
3401 // were we externally suspended while we were waiting? | |
3402 jt->check_and_wait_while_suspended(); | |
3403 | |
3404 return ret_code; | |
3405 } | |
3406 | |
3407 // non-JavaThread from this point on: | |
3408 | |
3409 if (millis <= 0) { | |
3410 thr_yield(); | |
3411 return 0; | |
3412 } | |
3413 | |
3414 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
3415 | |
3416 return os_sleep(millis, interruptible); | |
3417 } | |
3418 | |
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|
3419 void os::naked_short_sleep(jlong ms) { |
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|
3420 assert(ms < 1000, "Un-interruptable sleep, short time use only"); |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
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|
3421 |
5944dba4badc
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|
3422 // usleep is deprecated and removed from POSIX, in favour of nanosleep, but |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
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|
3423 // Solaris requires -lrt for this. |
5944dba4badc
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changeset
|
3424 usleep((ms * 1000)); |
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|
3425 |
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|
3426 return; |
0 | 3427 } |
3428 | |
3429 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
3430 void os::infinite_sleep() { | |
3431 while (true) { // sleep forever ... | |
3432 ::sleep(100); // ... 100 seconds at a time | |
3433 } | |
3434 } | |
3435 | |
3436 // Used to convert frequent JVM_Yield() to nops | |
3437 bool os::dont_yield() { | |
3438 if (DontYieldALot) { | |
3439 static hrtime_t last_time = 0; | |
3440 hrtime_t diff = getTimeNanos() - last_time; | |
3441 | |
3442 if (diff < DontYieldALotInterval * 1000000) | |
3443 return true; | |
3444 | |
3445 last_time += diff; | |
3446 | |
3447 return false; | |
3448 } | |
3449 else { | |
3450 return false; | |
3451 } | |
3452 } | |
3453 | |
3454 // Caveat: Solaris os::yield() causes a thread-state transition whereas | |
3455 // the linux and win32 implementations do not. This should be checked. | |
3456 | |
3457 void os::yield() { | |
3458 // Yields to all threads with same or greater priority | |
3459 os::sleep(Thread::current(), 0, false); | |
3460 } | |
3461 | |
3462 // Note that yield semantics are defined by the scheduling class to which | |
3463 // the thread currently belongs. Typically, yield will _not yield to | |
3464 // other equal or higher priority threads that reside on the dispatch queues | |
3465 // of other CPUs. | |
3466 | |
3467 os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; } | |
3468 | |
3469 | |
3470 // On Solaris we found that yield_all doesn't always yield to all other threads. | |
3471 // There have been cases where there is a thread ready to execute but it doesn't | |
3472 // get an lwp as the VM thread continues to spin with sleeps of 1 millisecond. | |
3473 // The 1 millisecond wait doesn't seem long enough for the kernel to issue a | |
3474 // SIGWAITING signal which will cause a new lwp to be created. So we count the | |
3475 // number of times yield_all is called in the one loop and increase the sleep | |
3476 // time after 8 attempts. If this fails too we increase the concurrency level | |
3477 // so that the starving thread would get an lwp | |
3478 | |
3479 void os::yield_all(int attempts) { | |
3480 // Yields to all threads, including threads with lower priorities | |
3481 if (attempts == 0) { | |
3482 os::sleep(Thread::current(), 1, false); | |
3483 } else { | |
3484 int iterations = attempts % 30; | |
3485 if (iterations == 0 && !os::Solaris::T2_libthread()) { | |
3486 // thr_setconcurrency and _getconcurrency make sense only under T1. | |
3487 int noofLWPS = thr_getconcurrency(); | |
3488 if (noofLWPS < (Threads::number_of_threads() + 2)) { | |
3489 thr_setconcurrency(thr_getconcurrency() + 1); | |
3490 } | |
3491 } else if (iterations < 25) { | |
3492 os::sleep(Thread::current(), 1, false); | |
3493 } else { | |
3494 os::sleep(Thread::current(), 10, false); | |
3495 } | |
3496 } | |
3497 } | |
3498 | |
3499 // Called from the tight loops to possibly influence time-sharing heuristics | |
3500 void os::loop_breaker(int attempts) { | |
3501 os::yield_all(attempts); | |
3502 } | |
3503 | |
3504 | |
3505 // Interface for setting lwp priorities. If we are using T2 libthread, | |
3506 // which forces the use of BoundThreads or we manually set UseBoundThreads, | |
3507 // all of our threads will be assigned to real lwp's. Using the thr_setprio | |
3508 // function is meaningless in this mode so we must adjust the real lwp's priority | |
3509 // The routines below implement the getting and setting of lwp priorities. | |
3510 // | |
3511 // Note: There are three priority scales used on Solaris. Java priotities | |
3512 // which range from 1 to 10, libthread "thr_setprio" scale which range | |
3513 // from 0 to 127, and the current scheduling class of the process we | |
3514 // are running in. This is typically from -60 to +60. | |
3515 // The setting of the lwp priorities in done after a call to thr_setprio | |
3516 // so Java priorities are mapped to libthread priorities and we map from | |
3517 // the latter to lwp priorities. We don't keep priorities stored in | |
3518 // Java priorities since some of our worker threads want to set priorities | |
3519 // higher than all Java threads. | |
3520 // | |
3521 // For related information: | |
3522 // (1) man -s 2 priocntl | |
3523 // (2) man -s 4 priocntl | |
3524 // (3) man dispadmin | |
3525 // = librt.so | |
3526 // = libthread/common/rtsched.c - thrp_setlwpprio(). | |
3527 // = ps -cL <pid> ... to validate priority. | |
3528 // = sched_get_priority_min and _max | |
3529 // pthread_create | |
3530 // sched_setparam | |
3531 // pthread_setschedparam | |
3532 // | |
3533 // Assumptions: | |
3534 // + We assume that all threads in the process belong to the same | |
3535 // scheduling class. IE. an homogenous process. | |
3536 // + Must be root or in IA group to change change "interactive" attribute. | |
3537 // Priocntl() will fail silently. The only indication of failure is when | |
3538 // we read-back the value and notice that it hasn't changed. | |
3539 // + Interactive threads enter the runq at the head, non-interactive at the tail. | |
3540 // + For RT, change timeslice as well. Invariant: | |
3541 // constant "priority integral" | |
3542 // Konst == TimeSlice * (60-Priority) | |
3543 // Given a priority, compute appropriate timeslice. | |
3544 // + Higher numerical values have higher priority. | |
3545 | |
3546 // sched class attributes | |
3547 typedef struct { | |
3548 int schedPolicy; // classID | |
3549 int maxPrio; | |
3550 int minPrio; | |
3551 } SchedInfo; | |
3552 | |
3553 | |
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|
3554 static SchedInfo tsLimits, iaLimits, rtLimits, fxLimits; |
0 | 3555 |
3556 #ifdef ASSERT | |
3557 static int ReadBackValidate = 1; | |
3558 #endif | |
3559 static int myClass = 0; | |
3560 static int myMin = 0; | |
3561 static int myMax = 0; | |
3562 static int myCur = 0; | |
3563 static bool priocntl_enable = false; | |
3564 | |
4854
de268c8a8075
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4803
diff
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|
3565 static const int criticalPrio = 60; // FX/60 is critical thread class/priority on T4 |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
changeset
|
3566 static int java_MaxPriority_to_os_priority = 0; // Saved mapping |
0 | 3567 |
3568 | |
3569 // lwp_priocntl_init | |
3570 // | |
3571 // Try to determine the priority scale for our process. | |
3572 // | |
3573 // Return errno or 0 if OK. | |
3574 // | |
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10986
diff
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|
3575 static int lwp_priocntl_init () { |
0 | 3576 int rslt; |
3577 pcinfo_t ClassInfo; | |
3578 pcparms_t ParmInfo; | |
3579 int i; | |
3580 | |
3581 if (!UseThreadPriorities) return 0; | |
3582 | |
3583 // We are using Bound threads, we need to determine our priority ranges | |
3584 if (os::Solaris::T2_libthread() || UseBoundThreads) { | |
3585 // If ThreadPriorityPolicy is 1, switch tables | |
3586 if (ThreadPriorityPolicy == 1) { | |
4854
de268c8a8075
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4803
diff
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|
3587 for (i = 0 ; i < CriticalPriority+1; i++) |
0 | 3588 os::java_to_os_priority[i] = prio_policy1[i]; |
3589 } | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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parents:
4803
diff
changeset
|
3590 if (UseCriticalJavaThreadPriority) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
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|
3591 // MaxPriority always maps to the FX scheduling class and criticalPrio. |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3592 // See set_native_priority() and set_lwp_class_and_priority(). |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3593 // Save original MaxPriority mapping in case attempt to |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
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|
3594 // use critical priority fails. |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3595 java_MaxPriority_to_os_priority = os::java_to_os_priority[MaxPriority]; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3596 // Set negative to distinguish from other priorities |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3597 os::java_to_os_priority[MaxPriority] = -criticalPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
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|
3598 } |
0 | 3599 } |
3600 // Not using Bound Threads, set to ThreadPolicy 1 | |
3601 else { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3602 for ( i = 0 ; i < CriticalPriority+1; i++ ) { |
0 | 3603 os::java_to_os_priority[i] = prio_policy1[i]; |
3604 } | |
3605 return 0; | |
3606 } | |
3607 | |
3608 // Get IDs for a set of well-known scheduling classes. | |
3609 // TODO-FIXME: GETCLINFO returns the current # of classes in the | |
3610 // the system. We should have a loop that iterates over the | |
3611 // classID values, which are known to be "small" integers. | |
3612 | |
3613 strcpy(ClassInfo.pc_clname, "TS"); | |
3614 ClassInfo.pc_cid = -1; | |
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10986
diff
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|
3615 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3616 if (rslt < 0) return errno; |
3617 assert(ClassInfo.pc_cid != -1, "cid for TS class is -1"); | |
3618 tsLimits.schedPolicy = ClassInfo.pc_cid; | |
3619 tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri; | |
3620 tsLimits.minPrio = -tsLimits.maxPrio; | |
3621 | |
3622 strcpy(ClassInfo.pc_clname, "IA"); | |
3623 ClassInfo.pc_cid = -1; | |
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10986
diff
changeset
|
3624 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3625 if (rslt < 0) return errno; |
3626 assert(ClassInfo.pc_cid != -1, "cid for IA class is -1"); | |
3627 iaLimits.schedPolicy = ClassInfo.pc_cid; | |
3628 iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri; | |
3629 iaLimits.minPrio = -iaLimits.maxPrio; | |
3630 | |
3631 strcpy(ClassInfo.pc_clname, "RT"); | |
3632 ClassInfo.pc_cid = -1; | |
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|
3633 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3634 if (rslt < 0) return errno; |
3635 assert(ClassInfo.pc_cid != -1, "cid for RT class is -1"); | |
3636 rtLimits.schedPolicy = ClassInfo.pc_cid; | |
3637 rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri; | |
3638 rtLimits.minPrio = 0; | |
3639 | |
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de268c8a8075
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4803
diff
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|
3640 strcpy(ClassInfo.pc_clname, "FX"); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3641 ClassInfo.pc_cid = -1; |
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|
3642 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
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|
3643 if (rslt < 0) return errno; |
de268c8a8075
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4803
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|
3644 assert(ClassInfo.pc_cid != -1, "cid for FX class is -1"); |
de268c8a8075
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4803
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|
3645 fxLimits.schedPolicy = ClassInfo.pc_cid; |
de268c8a8075
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4803
diff
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|
3646 fxLimits.maxPrio = ((fxinfo_t*)ClassInfo.pc_clinfo)->fx_maxupri; |
de268c8a8075
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4803
diff
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|
3647 fxLimits.minPrio = 0; |
0 | 3648 |
3649 // Query our "current" scheduling class. | |
4854
de268c8a8075
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4803
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|
3650 // This will normally be IA, TS or, rarely, FX or RT. |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3651 memset(&ParmInfo, 0, sizeof(ParmInfo)); |
0 | 3652 ParmInfo.pc_cid = PC_CLNULL; |
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|
3653 rslt = priocntl(P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
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|
3654 if (rslt < 0) return errno; |
0 | 3655 myClass = ParmInfo.pc_cid; |
3656 | |
3657 // We now know our scheduling classId, get specific information | |
4854
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|
3658 // about the class. |
0 | 3659 ClassInfo.pc_cid = myClass; |
3660 ClassInfo.pc_clname[0] = 0; | |
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10986
diff
changeset
|
3661 rslt = priocntl((idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo); |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3662 if (rslt < 0) return errno; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3663 |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3664 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3665 tty->print_cr("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3666 } |
0 | 3667 |
3668 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
3669 ParmInfo.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3670 rslt = priocntl(P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
0 | 3671 if (rslt < 0) return errno; |
3672 | |
3673 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
3674 myMin = rtLimits.minPrio; | |
3675 myMax = rtLimits.maxPrio; | |
3676 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
3677 iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms; | |
3678 myMin = iaLimits.minPrio; | |
3679 myMax = iaLimits.maxPrio; | |
3680 myMax = MIN2(myMax, (int)iaInfo->ia_uprilim); // clamp - restrict | |
3681 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
3682 tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms; | |
3683 myMin = tsLimits.minPrio; | |
3684 myMax = tsLimits.maxPrio; | |
3685 myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3686 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3687 fxparms_t *fxInfo = (fxparms_t*)ParmInfo.pc_clparms; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3688 myMin = fxLimits.minPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3689 myMax = fxLimits.maxPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3690 myMax = MIN2(myMax, (int)fxInfo->fx_uprilim); // clamp - restrict |
0 | 3691 } else { |
3692 // No clue - punt | |
3693 if (ThreadPriorityVerbose) | |
3694 tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname); | |
3695 return EINVAL; // no clue, punt | |
3696 } | |
3697 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3698 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3699 tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3700 } |
0 | 3701 |
3702 priocntl_enable = true; // Enable changing priorities | |
3703 return 0; | |
3704 } | |
3705 | |
3706 #define IAPRI(x) ((iaparms_t *)((x).pc_clparms)) | |
3707 #define RTPRI(x) ((rtparms_t *)((x).pc_clparms)) | |
3708 #define TSPRI(x) ((tsparms_t *)((x).pc_clparms)) | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3709 #define FXPRI(x) ((fxparms_t *)((x).pc_clparms)) |
0 | 3710 |
3711 | |
3712 // scale_to_lwp_priority | |
3713 // | |
3714 // Convert from the libthread "thr_setprio" scale to our current | |
3715 // lwp scheduling class scale. | |
3716 // | |
3717 static | |
3718 int scale_to_lwp_priority (int rMin, int rMax, int x) | |
3719 { | |
3720 int v; | |
3721 | |
3722 if (x == 127) return rMax; // avoid round-down | |
3723 v = (((x*(rMax-rMin)))/128)+rMin; | |
3724 return v; | |
3725 } | |
3726 | |
3727 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3728 // set_lwp_class_and_priority |
0 | 3729 // |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3730 // Set the class and priority of the lwp. This call should only |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3731 // be made when using bound threads (T2 threads are bound by default). |
0 | 3732 // |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3733 int set_lwp_class_and_priority(int ThreadID, int lwpid, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3734 int newPrio, int new_class, bool scale) { |
0 | 3735 int rslt; |
3736 int Actual, Expected, prv; | |
3737 pcparms_t ParmInfo; // for GET-SET | |
3738 #ifdef ASSERT | |
3739 pcparms_t ReadBack; // for readback | |
3740 #endif | |
3741 | |
3742 // Set priority via PC_GETPARMS, update, PC_SETPARMS | |
3743 // Query current values. | |
3744 // TODO: accelerate this by eliminating the PC_GETPARMS call. | |
3745 // Cache "pcparms_t" in global ParmCache. | |
3746 // TODO: elide set-to-same-value | |
3747 | |
3748 // If something went wrong on init, don't change priorities. | |
3749 if ( !priocntl_enable ) { | |
3750 if (ThreadPriorityVerbose) | |
3751 tty->print_cr("Trying to set priority but init failed, ignoring"); | |
3752 return EINVAL; | |
3753 } | |
3754 | |
3755 // If lwp hasn't started yet, just return | |
3756 // the _start routine will call us again. | |
3757 if ( lwpid <= 0 ) { | |
3758 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3759 tty->print_cr ("deferring the set_lwp_class_and_priority of thread " |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3760 INTPTR_FORMAT " to %d, lwpid not set", |
0 | 3761 ThreadID, newPrio); |
3762 } | |
3763 return 0; | |
3764 } | |
3765 | |
3766 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3767 tty->print_cr ("set_lwp_class_and_priority(" |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3768 INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ", |
0 | 3769 ThreadID, lwpid, newPrio); |
3770 } | |
3771 | |
3772 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
3773 ParmInfo.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3774 rslt = priocntl(P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo); |
0 | 3775 if (rslt < 0) return errno; |
3776 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3777 int cur_class = ParmInfo.pc_cid; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3778 ParmInfo.pc_cid = (id_t)new_class; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3779 |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3780 if (new_class == rtLimits.schedPolicy) { |
0 | 3781 rtparms_t *rtInfo = (rtparms_t*)ParmInfo.pc_clparms; |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3782 rtInfo->rt_pri = scale ? scale_to_lwp_priority(rtLimits.minPrio, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3783 rtLimits.maxPrio, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3784 : newPrio; |
0 | 3785 rtInfo->rt_tqsecs = RT_NOCHANGE; |
3786 rtInfo->rt_tqnsecs = RT_NOCHANGE; | |
3787 if (ThreadPriorityVerbose) { | |
3788 tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri); | |
3789 } | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3790 } else if (new_class == iaLimits.schedPolicy) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3791 iaparms_t* iaInfo = (iaparms_t*)ParmInfo.pc_clparms; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3792 int maxClamped = MIN2(iaLimits.maxPrio, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3793 cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3794 ? (int)iaInfo->ia_uprilim : iaLimits.maxPrio); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3795 iaInfo->ia_upri = scale ? scale_to_lwp_priority(iaLimits.minPrio, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3796 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3797 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3798 iaInfo->ia_uprilim = cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3799 ? IA_NOCHANGE : (pri_t)iaLimits.maxPrio; |
0 | 3800 iaInfo->ia_mode = IA_NOCHANGE; |
3801 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3802 tty->print_cr("IA: [%d...%d] %d->%d\n", |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3803 iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri); |
0 | 3804 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3805 } else if (new_class == tsLimits.schedPolicy) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3806 tsparms_t* tsInfo = (tsparms_t*)ParmInfo.pc_clparms; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3807 int maxClamped = MIN2(tsLimits.maxPrio, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3808 cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3809 ? (int)tsInfo->ts_uprilim : tsLimits.maxPrio); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3810 tsInfo->ts_upri = scale ? scale_to_lwp_priority(tsLimits.minPrio, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3811 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3812 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3813 tsInfo->ts_uprilim = cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3814 ? TS_NOCHANGE : (pri_t)tsLimits.maxPrio; |
0 | 3815 if (ThreadPriorityVerbose) { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3816 tty->print_cr("TS: [%d...%d] %d->%d\n", |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3817 tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri); |
0 | 3818 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3819 } else if (new_class == fxLimits.schedPolicy) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3820 fxparms_t* fxInfo = (fxparms_t*)ParmInfo.pc_clparms; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3821 int maxClamped = MIN2(fxLimits.maxPrio, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3822 cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3823 ? (int)fxInfo->fx_uprilim : fxLimits.maxPrio); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3824 fxInfo->fx_upri = scale ? scale_to_lwp_priority(fxLimits.minPrio, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3825 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3826 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3827 fxInfo->fx_uprilim = cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3828 ? FX_NOCHANGE : (pri_t)fxLimits.maxPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3829 fxInfo->fx_tqsecs = FX_NOCHANGE; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3830 fxInfo->fx_tqnsecs = FX_NOCHANGE; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3831 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3832 tty->print_cr("FX: [%d...%d] %d->%d\n", |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3833 fxLimits.minPrio, maxClamped, newPrio, fxInfo->fx_upri); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3834 } |
0 | 3835 } else { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3836 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3837 tty->print_cr("Unknown new scheduling class %d\n", new_class); |
0 | 3838 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3839 return EINVAL; // no clue, punt |
0 | 3840 } |
3841 | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3842 rslt = priocntl(P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo); |
0 | 3843 if (ThreadPriorityVerbose && rslt) { |
3844 tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno); | |
3845 } | |
3846 if (rslt < 0) return errno; | |
3847 | |
3848 #ifdef ASSERT | |
3849 // Sanity check: read back what we just attempted to set. | |
3850 // In theory it could have changed in the interim ... | |
3851 // | |
3852 // The priocntl system call is tricky. | |
3853 // Sometimes it'll validate the priority value argument and | |
3854 // return EINVAL if unhappy. At other times it fails silently. | |
3855 // Readbacks are prudent. | |
3856 | |
3857 if (!ReadBackValidate) return 0; | |
3858 | |
3859 memset(&ReadBack, 0, sizeof(pcparms_t)); | |
3860 ReadBack.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3861 rslt = priocntl(P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack); |
0 | 3862 assert(rslt >= 0, "priocntl failed"); |
3863 Actual = Expected = 0xBAD; | |
3864 assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match"); | |
3865 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
3866 Actual = RTPRI(ReadBack)->rt_pri; | |
3867 Expected = RTPRI(ParmInfo)->rt_pri; | |
3868 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
3869 Actual = IAPRI(ReadBack)->ia_upri; | |
3870 Expected = IAPRI(ParmInfo)->ia_upri; | |
3871 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
3872 Actual = TSPRI(ReadBack)->ts_upri; | |
3873 Expected = TSPRI(ParmInfo)->ts_upri; | |
4854
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7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
changeset
|
3874 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
de268c8a8075
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diff
changeset
|
3875 Actual = FXPRI(ReadBack)->fx_upri; |
de268c8a8075
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diff
changeset
|
3876 Expected = FXPRI(ParmInfo)->fx_upri; |
0 | 3877 } else { |
4854
de268c8a8075
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diff
changeset
|
3878 if (ThreadPriorityVerbose) { |
de268c8a8075
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diff
changeset
|
3879 tty->print_cr("set_lwp_class_and_priority: unexpected class in readback: %d\n", |
de268c8a8075
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diff
changeset
|
3880 ParmInfo.pc_cid); |
0 | 3881 } |
3882 } | |
3883 | |
3884 if (Actual != Expected) { | |
4854
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diff
changeset
|
3885 if (ThreadPriorityVerbose) { |
de268c8a8075
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diff
changeset
|
3886 tty->print_cr ("set_lwp_class_and_priority(%d %d) Class=%d: actual=%d vs expected=%d\n", |
de268c8a8075
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diff
changeset
|
3887 lwpid, newPrio, ReadBack.pc_cid, Actual, Expected); |
0 | 3888 } |
3889 } | |
3890 #endif | |
3891 | |
3892 return 0; | |
3893 } | |
3894 | |
3895 // Solaris only gives access to 128 real priorities at a time, | |
3896 // so we expand Java's ten to fill this range. This would be better | |
3897 // if we dynamically adjusted relative priorities. | |
3898 // | |
3899 // The ThreadPriorityPolicy option allows us to select 2 different | |
3900 // priority scales. | |
3901 // | |
3902 // ThreadPriorityPolicy=0 | |
3903 // Since the Solaris' default priority is MaximumPriority, we do not | |
3904 // set a priority lower than Max unless a priority lower than | |
3905 // NormPriority is requested. | |
3906 // | |
3907 // ThreadPriorityPolicy=1 | |
3908 // This mode causes the priority table to get filled with | |
3909 // linear values. NormPriority get's mapped to 50% of the | |
3910 // Maximum priority an so on. This will cause VM threads | |
3911 // to get unfair treatment against other Solaris processes | |
3912 // which do not explicitly alter their thread priorities. | |
3913 // | |
3914 | |
4854
de268c8a8075
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diff
changeset
|
3915 int os::java_to_os_priority[CriticalPriority + 1] = { |
0 | 3916 -99999, // 0 Entry should never be used |
3917 | |
3918 0, // 1 MinPriority | |
3919 32, // 2 | |
3920 64, // 3 | |
3921 | |
3922 96, // 4 | |
3923 127, // 5 NormPriority | |
3924 127, // 6 | |
3925 | |
3926 127, // 7 | |
3927 127, // 8 | |
3928 127, // 9 NearMaxPriority | |
3929 | |
4854
de268c8a8075
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4803
diff
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|
3930 127, // 10 MaxPriority |
de268c8a8075
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|
3931 |
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diff
changeset
|
3932 -criticalPrio // 11 CriticalPriority |
0 | 3933 }; |
3934 | |
3935 OSReturn os::set_native_priority(Thread* thread, int newpri) { | |
4854
de268c8a8075
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4803
diff
changeset
|
3936 OSThread* osthread = thread->osthread(); |
de268c8a8075
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|
3937 |
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diff
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|
3938 // Save requested priority in case the thread hasn't been started |
de268c8a8075
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4803
diff
changeset
|
3939 osthread->set_native_priority(newpri); |
de268c8a8075
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|
3940 |
de268c8a8075
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|
3941 // Check for critical priority request |
de268c8a8075
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diff
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|
3942 bool fxcritical = false; |
de268c8a8075
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diff
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|
3943 if (newpri == -criticalPrio) { |
de268c8a8075
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diff
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|
3944 fxcritical = true; |
de268c8a8075
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diff
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|
3945 newpri = criticalPrio; |
de268c8a8075
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diff
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|
3946 } |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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diff
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|
3947 |
0 | 3948 assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping"); |
4854
de268c8a8075
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4803
diff
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|
3949 if (!UseThreadPriorities) return OS_OK; |
de268c8a8075
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diff
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|
3950 |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
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|
3951 int status = 0; |
de268c8a8075
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diff
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|
3952 |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
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|
3953 if (!fxcritical) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
changeset
|
3954 // Use thr_setprio only if we have a priority that thr_setprio understands |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3955 status = thr_setprio(thread->osthread()->thread_id(), newpri); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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4803
diff
changeset
|
3956 } |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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diff
changeset
|
3957 |
de268c8a8075
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4803
diff
changeset
|
3958 if (os::Solaris::T2_libthread() || |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3959 (UseBoundThreads && osthread->is_vm_created())) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3960 int lwp_status = |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3961 set_lwp_class_and_priority(osthread->thread_id(), |
de268c8a8075
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phh
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4803
diff
changeset
|
3962 osthread->lwp_id(), |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3963 newpri, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3964 fxcritical ? fxLimits.schedPolicy : myClass, |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3965 !fxcritical); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3966 if (lwp_status != 0 && fxcritical) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3967 // Try again, this time without changing the scheduling class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3968 newpri = java_MaxPriority_to_os_priority; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3969 lwp_status = set_lwp_class_and_priority(osthread->thread_id(), |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3970 osthread->lwp_id(), |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3971 newpri, myClass, false); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3972 } |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3973 status |= lwp_status; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3974 } |
0 | 3975 return (status == 0) ? OS_OK : OS_ERR; |
3976 } | |
3977 | |
3978 | |
3979 OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) { | |
3980 int p; | |
3981 if ( !UseThreadPriorities ) { | |
3982 *priority_ptr = NormalPriority; | |
3983 return OS_OK; | |
3984 } | |
3985 int status = thr_getprio(thread->osthread()->thread_id(), &p); | |
3986 if (status != 0) { | |
3987 return OS_ERR; | |
3988 } | |
3989 *priority_ptr = p; | |
3990 return OS_OK; | |
3991 } | |
3992 | |
3993 | |
3994 // Hint to the underlying OS that a task switch would not be good. | |
3995 // Void return because it's a hint and can fail. | |
3996 void os::hint_no_preempt() { | |
3997 schedctl_start(schedctl_init()); | |
3998 } | |
3999 | |
10405 | 4000 static void resume_clear_context(OSThread *osthread) { |
4001 osthread->set_ucontext(NULL); | |
4002 } | |
4003 | |
4004 static void suspend_save_context(OSThread *osthread, ucontext_t* context) { | |
4005 osthread->set_ucontext(context); | |
4006 } | |
4007 | |
4008 static Semaphore sr_semaphore; | |
4009 | |
4010 void os::Solaris::SR_handler(Thread* thread, ucontext_t* uc) { | |
4011 // Save and restore errno to avoid confusing native code with EINTR | |
4012 // after sigsuspend. | |
4013 int old_errno = errno; | |
4014 | |
4015 OSThread* osthread = thread->osthread(); | |
4016 assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread"); | |
4017 | |
4018 os::SuspendResume::State current = osthread->sr.state(); | |
4019 if (current == os::SuspendResume::SR_SUSPEND_REQUEST) { | |
4020 suspend_save_context(osthread, uc); | |
4021 | |
4022 // attempt to switch the state, we assume we had a SUSPEND_REQUEST | |
4023 os::SuspendResume::State state = osthread->sr.suspended(); | |
4024 if (state == os::SuspendResume::SR_SUSPENDED) { | |
4025 sigset_t suspend_set; // signals for sigsuspend() | |
4026 | |
4027 // get current set of blocked signals and unblock resume signal | |
4028 thr_sigsetmask(SIG_BLOCK, NULL, &suspend_set); | |
4029 sigdelset(&suspend_set, os::Solaris::SIGasync()); | |
4030 | |
4031 sr_semaphore.signal(); | |
4032 // wait here until we are resumed | |
4033 while (1) { | |
4034 sigsuspend(&suspend_set); | |
4035 | |
4036 os::SuspendResume::State result = osthread->sr.running(); | |
4037 if (result == os::SuspendResume::SR_RUNNING) { | |
4038 sr_semaphore.signal(); | |
4039 break; | |
4040 } | |
4041 } | |
4042 | |
4043 } else if (state == os::SuspendResume::SR_RUNNING) { | |
4044 // request was cancelled, continue | |
4045 } else { | |
4046 ShouldNotReachHere(); | |
4047 } | |
4048 | |
4049 resume_clear_context(osthread); | |
4050 } else if (current == os::SuspendResume::SR_RUNNING) { | |
4051 // request was cancelled, continue | |
4052 } else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4053 // ignore | |
4054 } else { | |
4055 // ignore | |
4056 } | |
4057 | |
4058 errno = old_errno; | |
4059 } | |
4060 | |
4061 | |
0 | 4062 void os::interrupt(Thread* thread) { |
4063 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
4064 | |
4065 OSThread* osthread = thread->osthread(); | |
4066 | |
4067 int isInterrupted = osthread->interrupted(); | |
4068 if (!isInterrupted) { | |
4069 osthread->set_interrupted(true); | |
4070 OrderAccess::fence(); | |
4071 // os::sleep() is implemented with either poll (NULL,0,timeout) or | |
4072 // by parking on _SleepEvent. If the former, thr_kill will unwedge | |
4073 // the sleeper by SIGINTR, otherwise the unpark() will wake the sleeper. | |
4074 ParkEvent * const slp = thread->_SleepEvent ; | |
4075 if (slp != NULL) slp->unpark() ; | |
4076 } | |
4077 | |
4078 // For JSR166: unpark after setting status but before thr_kill -dl | |
4079 if (thread->is_Java_thread()) { | |
4080 ((JavaThread*)thread)->parker()->unpark(); | |
4081 } | |
4082 | |
4083 // Handle interruptible wait() ... | |
4084 ParkEvent * const ev = thread->_ParkEvent ; | |
4085 if (ev != NULL) ev->unpark() ; | |
4086 | |
4087 // When events are used everywhere for os::sleep, then this thr_kill | |
4088 // will only be needed if UseVMInterruptibleIO is true. | |
4089 | |
4090 if (!isInterrupted) { | |
4091 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGinterrupt()); | |
4092 assert_status(status == 0, status, "thr_kill"); | |
4093 | |
4094 // Bump thread interruption counter | |
4095 RuntimeService::record_thread_interrupt_signaled_count(); | |
4096 } | |
4097 } | |
4098 | |
4099 | |
4100 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
4101 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
4102 | |
4103 OSThread* osthread = thread->osthread(); | |
4104 | |
4105 bool res = osthread->interrupted(); | |
4106 | |
4107 // NOTE that since there is no "lock" around these two operations, | |
4108 // there is the possibility that the interrupted flag will be | |
4109 // "false" but that the interrupt event will be set. This is | |
4110 // intentional. The effect of this is that Object.wait() will appear | |
4111 // to have a spurious wakeup, which is not harmful, and the | |
4112 // possibility is so rare that it is not worth the added complexity | |
4113 // to add yet another lock. It has also been recommended not to put | |
4114 // the interrupted flag into the os::Solaris::Event structure, | |
4115 // because it hides the issue. | |
4116 if (res && clear_interrupted) { | |
4117 osthread->set_interrupted(false); | |
4118 } | |
4119 return res; | |
4120 } | |
4121 | |
4122 | |
4123 void os::print_statistics() { | |
4124 } | |
4125 | |
4126 int os::message_box(const char* title, const char* message) { | |
4127 int i; | |
4128 fdStream err(defaultStream::error_fd()); | |
4129 for (i = 0; i < 78; i++) err.print_raw("="); | |
4130 err.cr(); | |
4131 err.print_raw_cr(title); | |
4132 for (i = 0; i < 78; i++) err.print_raw("-"); | |
4133 err.cr(); | |
4134 err.print_raw_cr(message); | |
4135 for (i = 0; i < 78; i++) err.print_raw("="); | |
4136 err.cr(); | |
4137 | |
4138 char buf[16]; | |
4139 // Prevent process from exiting upon "read error" without consuming all CPU | |
4140 while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } | |
4141 | |
4142 return buf[0] == 'y' || buf[0] == 'Y'; | |
4143 } | |
4144 | |
10405 | 4145 static int sr_notify(OSThread* osthread) { |
4146 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGasync()); | |
4147 assert_status(status == 0, status, "thr_kill"); | |
4148 return status; | |
4149 } | |
4150 | |
4151 // "Randomly" selected value for how long we want to spin | |
4152 // before bailing out on suspending a thread, also how often | |
4153 // we send a signal to a thread we want to resume | |
4154 static const int RANDOMLY_LARGE_INTEGER = 1000000; | |
4155 static const int RANDOMLY_LARGE_INTEGER2 = 100; | |
4156 | |
4157 static bool do_suspend(OSThread* osthread) { | |
4158 assert(osthread->sr.is_running(), "thread should be running"); | |
4159 assert(!sr_semaphore.trywait(), "semaphore has invalid state"); | |
4160 | |
4161 // mark as suspended and send signal | |
4162 if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) { | |
4163 // failed to switch, state wasn't running? | |
4164 ShouldNotReachHere(); | |
4165 return false; | |
4166 } | |
4167 | |
4168 if (sr_notify(osthread) != 0) { | |
4169 ShouldNotReachHere(); | |
4170 } | |
4171 | |
4172 // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED | |
4173 while (true) { | |
4174 if (sr_semaphore.timedwait(0, 2000 * NANOSECS_PER_MILLISEC)) { | |
4175 break; | |
4176 } else { | |
4177 // timeout | |
4178 os::SuspendResume::State cancelled = osthread->sr.cancel_suspend(); | |
4179 if (cancelled == os::SuspendResume::SR_RUNNING) { | |
4180 return false; | |
4181 } else if (cancelled == os::SuspendResume::SR_SUSPENDED) { | |
4182 // make sure that we consume the signal on the semaphore as well | |
4183 sr_semaphore.wait(); | |
4184 break; | |
4185 } else { | |
4186 ShouldNotReachHere(); | |
4187 return false; | |
4188 } | |
4189 } | |
4190 } | |
4191 | |
4192 guarantee(osthread->sr.is_suspended(), "Must be suspended"); | |
4193 return true; | |
4194 } | |
4195 | |
4196 static void do_resume(OSThread* osthread) { | |
4197 assert(osthread->sr.is_suspended(), "thread should be suspended"); | |
4198 assert(!sr_semaphore.trywait(), "invalid semaphore state"); | |
4199 | |
4200 if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4201 // failed to switch to WAKEUP_REQUEST | |
4202 ShouldNotReachHere(); | |
4203 return; | |
4204 } | |
4205 | |
4206 while (true) { | |
4207 if (sr_notify(osthread) == 0) { | |
4208 if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { | |
4209 if (osthread->sr.is_running()) { | |
4210 return; | |
4211 } | |
4212 } | |
4213 } else { | |
4214 ShouldNotReachHere(); | |
4215 } | |
4216 } | |
4217 | |
4218 guarantee(osthread->sr.is_running(), "Must be running!"); | |
4219 } | |
4220 | |
4221 void os::SuspendedThreadTask::internal_do_task() { | |
4222 if (do_suspend(_thread->osthread())) { | |
4223 SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext()); | |
4224 do_task(context); | |
4225 do_resume(_thread->osthread()); | |
4226 } | |
4227 } | |
4228 | |
4229 class PcFetcher : public os::SuspendedThreadTask { | |
4230 public: | |
4231 PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {} | |
4232 ExtendedPC result(); | |
4233 protected: | |
4234 void do_task(const os::SuspendedThreadTaskContext& context); | |
4235 private: | |
4236 ExtendedPC _epc; | |
4237 }; | |
4238 | |
4239 ExtendedPC PcFetcher::result() { | |
4240 guarantee(is_done(), "task is not done yet."); | |
4241 return _epc; | |
4242 } | |
4243 | |
4244 void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) { | |
4245 Thread* thread = context.thread(); | |
4246 OSThread* osthread = thread->osthread(); | |
4247 if (osthread->ucontext() != NULL) { | |
4248 _epc = os::Solaris::ucontext_get_pc((ucontext_t *) context.ucontext()); | |
4249 } else { | |
4250 // NULL context is unexpected, double-check this is the VMThread | |
4251 guarantee(thread->is_VM_thread(), "can only be called for VMThread"); | |
4252 } | |
4253 } | |
4254 | |
0 | 4255 // A lightweight implementation that does not suspend the target thread and |
4256 // thus returns only a hint. Used for profiling only! | |
4257 ExtendedPC os::get_thread_pc(Thread* thread) { | |
4258 // Make sure that it is called by the watcher and the Threads lock is owned. | |
4259 assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock"); | |
4260 // For now, is only used to profile the VM Thread | |
4261 assert(thread->is_VM_thread(), "Can only be called for VMThread"); | |
10405 | 4262 PcFetcher fetcher(thread); |
4263 fetcher.run(); | |
4264 return fetcher.result(); | |
0 | 4265 } |
4266 | |
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4267 address os::get_pc(void* context) { |
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changeset
|
4268 ucontext_t *uc = (ucontext_t*)context; |
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changeset
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4269 return os::Solaris::ucontext_get_pc(uc); |
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4270 } |
0 | 4271 |
4272 // This does not do anything on Solaris. This is basically a hook for being | |
4273 // able to use structured exception handling (thread-local exception filters) on, e.g., Win32. | |
4274 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) { | |
4275 f(value, method, args, thread); | |
4276 } | |
4277 | |
4278 // This routine may be used by user applications as a "hook" to catch signals. | |
4279 // The user-defined signal handler must pass unrecognized signals to this | |
4280 // routine, and if it returns true (non-zero), then the signal handler must | |
4281 // return immediately. If the flag "abort_if_unrecognized" is true, then this | |
4282 // routine will never retun false (zero), but instead will execute a VM panic | |
4283 // routine kill the process. | |
4284 // | |
4285 // If this routine returns false, it is OK to call it again. This allows | |
4286 // the user-defined signal handler to perform checks either before or after | |
4287 // the VM performs its own checks. Naturally, the user code would be making | |
4288 // a serious error if it tried to handle an exception (such as a null check | |
4289 // or breakpoint) that the VM was generating for its own correct operation. | |
4290 // | |
4291 // This routine may recognize any of the following kinds of signals: | |
4292 // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ, | |
4293 // os::Solaris::SIGasync | |
4294 // It should be consulted by handlers for any of those signals. | |
4295 // It explicitly does not recognize os::Solaris::SIGinterrupt | |
4296 // | |
4297 // The caller of this routine must pass in the three arguments supplied | |
4298 // to the function referred to in the "sa_sigaction" (not the "sa_handler") | |
4299 // field of the structure passed to sigaction(). This routine assumes that | |
4300 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. | |
4301 // | |
4302 // Note that the VM will print warnings if it detects conflicting signal | |
4303 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". | |
4304 // | |
2191 | 4305 extern "C" JNIEXPORT int |
4306 JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, | |
4307 int abort_if_unrecognized); | |
0 | 4308 |
4309 | |
4310 void signalHandler(int sig, siginfo_t* info, void* ucVoid) { | |
8067 | 4311 int orig_errno = errno; // Preserve errno value over signal handler. |
0 | 4312 JVM_handle_solaris_signal(sig, info, ucVoid, true); |
8067 | 4313 errno = orig_errno; |
0 | 4314 } |
4315 | |
4316 /* Do not delete - if guarantee is ever removed, a signal handler (even empty) | |
4317 is needed to provoke threads blocked on IO to return an EINTR | |
4318 Note: this explicitly does NOT call JVM_handle_solaris_signal and | |
4319 does NOT participate in signal chaining due to requirement for | |
4320 NOT setting SA_RESTART to make EINTR work. */ | |
4321 extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) { | |
4322 if (UseSignalChaining) { | |
4323 struct sigaction *actp = os::Solaris::get_chained_signal_action(sig); | |
4324 if (actp && actp->sa_handler) { | |
4325 vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs"); | |
4326 } | |
4327 } | |
4328 } | |
4329 | |
4330 // This boolean allows users to forward their own non-matching signals | |
4331 // to JVM_handle_solaris_signal, harmlessly. | |
4332 bool os::Solaris::signal_handlers_are_installed = false; | |
4333 | |
4334 // For signal-chaining | |
4335 bool os::Solaris::libjsig_is_loaded = false; | |
4336 typedef struct sigaction *(*get_signal_t)(int); | |
4337 get_signal_t os::Solaris::get_signal_action = NULL; | |
4338 | |
4339 struct sigaction* os::Solaris::get_chained_signal_action(int sig) { | |
4340 struct sigaction *actp = NULL; | |
4341 | |
4342 if ((libjsig_is_loaded) && (sig <= Maxlibjsigsigs)) { | |
4343 // Retrieve the old signal handler from libjsig | |
4344 actp = (*get_signal_action)(sig); | |
4345 } | |
4346 if (actp == NULL) { | |
4347 // Retrieve the preinstalled signal handler from jvm | |
4348 actp = get_preinstalled_handler(sig); | |
4349 } | |
4350 | |
4351 return actp; | |
4352 } | |
4353 | |
4354 static bool call_chained_handler(struct sigaction *actp, int sig, | |
4355 siginfo_t *siginfo, void *context) { | |
4356 // Call the old signal handler | |
4357 if (actp->sa_handler == SIG_DFL) { | |
4358 // It's more reasonable to let jvm treat it as an unexpected exception | |
4359 // instead of taking the default action. | |
4360 return false; | |
4361 } else if (actp->sa_handler != SIG_IGN) { | |
4362 if ((actp->sa_flags & SA_NODEFER) == 0) { | |
4363 // automaticlly block the signal | |
4364 sigaddset(&(actp->sa_mask), sig); | |
4365 } | |
4366 | |
4367 sa_handler_t hand; | |
4368 sa_sigaction_t sa; | |
4369 bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; | |
4370 // retrieve the chained handler | |
4371 if (siginfo_flag_set) { | |
4372 sa = actp->sa_sigaction; | |
4373 } else { | |
4374 hand = actp->sa_handler; | |
4375 } | |
4376 | |
4377 if ((actp->sa_flags & SA_RESETHAND) != 0) { | |
4378 actp->sa_handler = SIG_DFL; | |
4379 } | |
4380 | |
4381 // try to honor the signal mask | |
4382 sigset_t oset; | |
4383 thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset); | |
4384 | |
4385 // call into the chained handler | |
4386 if (siginfo_flag_set) { | |
4387 (*sa)(sig, siginfo, context); | |
4388 } else { | |
4389 (*hand)(sig); | |
4390 } | |
4391 | |
4392 // restore the signal mask | |
4393 thr_sigsetmask(SIG_SETMASK, &oset, 0); | |
4394 } | |
4395 // Tell jvm's signal handler the signal is taken care of. | |
4396 return true; | |
4397 } | |
4398 | |
4399 bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) { | |
4400 bool chained = false; | |
4401 // signal-chaining | |
4402 if (UseSignalChaining) { | |
4403 struct sigaction *actp = get_chained_signal_action(sig); | |
4404 if (actp != NULL) { | |
4405 chained = call_chained_handler(actp, sig, siginfo, context); | |
4406 } | |
4407 } | |
4408 return chained; | |
4409 } | |
4410 | |
4411 struct sigaction* os::Solaris::get_preinstalled_handler(int sig) { | |
4412 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4413 if (preinstalled_sigs[sig] != 0) { | |
4414 return &chainedsigactions[sig]; | |
4415 } | |
4416 return NULL; | |
4417 } | |
4418 | |
4419 void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) { | |
4420 | |
4421 assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range"); | |
4422 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4423 chainedsigactions[sig] = oldAct; | |
4424 preinstalled_sigs[sig] = 1; | |
4425 } | |
4426 | |
4427 void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) { | |
4428 // Check for overwrite. | |
4429 struct sigaction oldAct; | |
4430 sigaction(sig, (struct sigaction*)NULL, &oldAct); | |
4431 void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4432 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4433 if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && | |
4434 oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && | |
4435 oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) { | |
4436 if (AllowUserSignalHandlers || !set_installed) { | |
4437 // Do not overwrite; user takes responsibility to forward to us. | |
4438 return; | |
4439 } else if (UseSignalChaining) { | |
4440 if (oktochain) { | |
4441 // save the old handler in jvm | |
4442 save_preinstalled_handler(sig, oldAct); | |
4443 } else { | |
4444 vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs."); | |
4445 } | |
4446 // libjsig also interposes the sigaction() call below and saves the | |
4447 // old sigaction on it own. | |
4448 } else { | |
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|
4449 fatal(err_msg("Encountered unexpected pre-existing sigaction handler " |
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changeset
|
4450 "%#lx for signal %d.", (long)oldhand, sig)); |
0 | 4451 } |
4452 } | |
4453 | |
4454 struct sigaction sigAct; | |
4455 sigfillset(&(sigAct.sa_mask)); | |
4456 sigAct.sa_handler = SIG_DFL; | |
4457 | |
4458 sigAct.sa_sigaction = signalHandler; | |
4459 // Handle SIGSEGV on alternate signal stack if | |
4460 // not using stack banging | |
4461 if (!UseStackBanging && sig == SIGSEGV) { | |
4462 sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK; | |
4463 // Interruptible i/o requires SA_RESTART cleared so EINTR | |
4464 // is returned instead of restarting system calls | |
4465 } else if (sig == os::Solaris::SIGinterrupt()) { | |
4466 sigemptyset(&sigAct.sa_mask); | |
4467 sigAct.sa_handler = NULL; | |
4468 sigAct.sa_flags = SA_SIGINFO; | |
4469 sigAct.sa_sigaction = sigINTRHandler; | |
4470 } else { | |
4471 sigAct.sa_flags = SA_SIGINFO | SA_RESTART; | |
4472 } | |
4473 os::Solaris::set_our_sigflags(sig, sigAct.sa_flags); | |
4474 | |
4475 sigaction(sig, &sigAct, &oldAct); | |
4476 | |
4477 void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4478 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4479 assert(oldhand2 == oldhand, "no concurrent signal handler installation"); | |
4480 } | |
4481 | |
4482 | |
4483 #define DO_SIGNAL_CHECK(sig) \ | |
4484 if (!sigismember(&check_signal_done, sig)) \ | |
4485 os::Solaris::check_signal_handler(sig) | |
4486 | |
4487 // This method is a periodic task to check for misbehaving JNI applications | |
4488 // under CheckJNI, we can add any periodic checks here | |
4489 | |
4490 void os::run_periodic_checks() { | |
4491 // A big source of grief is hijacking virt. addr 0x0 on Solaris, | |
4492 // thereby preventing a NULL checks. | |
4493 if(!check_addr0_done) check_addr0_done = check_addr0(tty); | |
4494 | |
4495 if (check_signals == false) return; | |
4496 | |
4497 // SEGV and BUS if overridden could potentially prevent | |
4498 // generation of hs*.log in the event of a crash, debugging | |
4499 // such a case can be very challenging, so we absolutely | |
4500 // check for the following for a good measure: | |
4501 DO_SIGNAL_CHECK(SIGSEGV); | |
4502 DO_SIGNAL_CHECK(SIGILL); | |
4503 DO_SIGNAL_CHECK(SIGFPE); | |
4504 DO_SIGNAL_CHECK(SIGBUS); | |
4505 DO_SIGNAL_CHECK(SIGPIPE); | |
4506 DO_SIGNAL_CHECK(SIGXFSZ); | |
4507 | |
4508 // ReduceSignalUsage allows the user to override these handlers | |
4509 // see comments at the very top and jvm_solaris.h | |
4510 if (!ReduceSignalUsage) { | |
4511 DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); | |
4512 DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); | |
4513 DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); | |
4514 DO_SIGNAL_CHECK(BREAK_SIGNAL); | |
4515 } | |
4516 | |
4517 // See comments above for using JVM1/JVM2 and UseAltSigs | |
4518 DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt()); | |
4519 DO_SIGNAL_CHECK(os::Solaris::SIGasync()); | |
4520 | |
4521 } | |
4522 | |
4523 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); | |
4524 | |
4525 static os_sigaction_t os_sigaction = NULL; | |
4526 | |
4527 void os::Solaris::check_signal_handler(int sig) { | |
4528 char buf[O_BUFLEN]; | |
4529 address jvmHandler = NULL; | |
4530 | |
4531 struct sigaction act; | |
4532 if (os_sigaction == NULL) { | |
4533 // only trust the default sigaction, in case it has been interposed | |
4534 os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); | |
4535 if (os_sigaction == NULL) return; | |
4536 } | |
4537 | |
4538 os_sigaction(sig, (struct sigaction*)NULL, &act); | |
4539 | |
4540 address thisHandler = (act.sa_flags & SA_SIGINFO) | |
4541 ? CAST_FROM_FN_PTR(address, act.sa_sigaction) | |
4542 : CAST_FROM_FN_PTR(address, act.sa_handler) ; | |
4543 | |
4544 | |
4545 switch(sig) { | |
4546 case SIGSEGV: | |
4547 case SIGBUS: | |
4548 case SIGFPE: | |
4549 case SIGPIPE: | |
4550 case SIGXFSZ: | |
4551 case SIGILL: | |
4552 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4553 break; | |
4554 | |
4555 case SHUTDOWN1_SIGNAL: | |
4556 case SHUTDOWN2_SIGNAL: | |
4557 case SHUTDOWN3_SIGNAL: | |
4558 case BREAK_SIGNAL: | |
4559 jvmHandler = (address)user_handler(); | |
4560 break; | |
4561 | |
4562 default: | |
4563 int intrsig = os::Solaris::SIGinterrupt(); | |
4564 int asynsig = os::Solaris::SIGasync(); | |
4565 | |
4566 if (sig == intrsig) { | |
4567 jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler); | |
4568 } else if (sig == asynsig) { | |
4569 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4570 } else { | |
4571 return; | |
4572 } | |
4573 break; | |
4574 } | |
4575 | |
4576 | |
4577 if (thisHandler != jvmHandler) { | |
4578 tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); | |
4579 tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); | |
4580 tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); | |
4581 // No need to check this sig any longer | |
4582 sigaddset(&check_signal_done, sig); | |
4583 } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
4584 tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); | |
4585 tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig)); | |
4586 tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags); | |
4587 // No need to check this sig any longer | |
4588 sigaddset(&check_signal_done, sig); | |
4589 } | |
4590 | |
4591 // Print all the signal handler state | |
4592 if (sigismember(&check_signal_done, sig)) { | |
4593 print_signal_handlers(tty, buf, O_BUFLEN); | |
4594 } | |
4595 | |
4596 } | |
4597 | |
4598 void os::Solaris::install_signal_handlers() { | |
4599 bool libjsigdone = false; | |
4600 signal_handlers_are_installed = true; | |
4601 | |
4602 // signal-chaining | |
4603 typedef void (*signal_setting_t)(); | |
4604 signal_setting_t begin_signal_setting = NULL; | |
4605 signal_setting_t end_signal_setting = NULL; | |
4606 begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4607 dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); | |
4608 if (begin_signal_setting != NULL) { | |
4609 end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4610 dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); | |
4611 get_signal_action = CAST_TO_FN_PTR(get_signal_t, | |
4612 dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); | |
4613 get_libjsig_version = CAST_TO_FN_PTR(version_getting_t, | |
4614 dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version")); | |
4615 libjsig_is_loaded = true; | |
4616 if (os::Solaris::get_libjsig_version != NULL) { | |
4617 libjsigversion = (*os::Solaris::get_libjsig_version)(); | |
4618 } | |
4619 assert(UseSignalChaining, "should enable signal-chaining"); | |
4620 } | |
4621 if (libjsig_is_loaded) { | |
4622 // Tell libjsig jvm is setting signal handlers | |
4623 (*begin_signal_setting)(); | |
4624 } | |
4625 | |
4626 set_signal_handler(SIGSEGV, true, true); | |
4627 set_signal_handler(SIGPIPE, true, true); | |
4628 set_signal_handler(SIGXFSZ, true, true); | |
4629 set_signal_handler(SIGBUS, true, true); | |
4630 set_signal_handler(SIGILL, true, true); | |
4631 set_signal_handler(SIGFPE, true, true); | |
4632 | |
4633 | |
4634 if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) { | |
4635 | |
4636 // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so | |
4637 // can not register overridable signals which might be > 32 | |
4638 if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) { | |
4639 // Tell libjsig jvm has finished setting signal handlers | |
4640 (*end_signal_setting)(); | |
4641 libjsigdone = true; | |
4642 } | |
4643 } | |
4644 | |
4645 // Never ok to chain our SIGinterrupt | |
4646 set_signal_handler(os::Solaris::SIGinterrupt(), true, false); | |
4647 set_signal_handler(os::Solaris::SIGasync(), true, true); | |
4648 | |
4649 if (libjsig_is_loaded && !libjsigdone) { | |
4650 // Tell libjsig jvm finishes setting signal handlers | |
4651 (*end_signal_setting)(); | |
4652 } | |
4653 | |
4654 // We don't activate signal checker if libjsig is in place, we trust ourselves | |
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4655 // and if UserSignalHandler is installed all bets are off. |
3607aac85aa9
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3885
diff
changeset
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4656 // Log that signal checking is off only if -verbose:jni is specified. |
0 | 4657 if (CheckJNICalls) { |
4658 if (libjsig_is_loaded) { | |
3956
3607aac85aa9
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3885
diff
changeset
|
4659 if (PrintJNIResolving) { |
3607aac85aa9
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3885
diff
changeset
|
4660 tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); |
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
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3885
diff
changeset
|
4661 } |
0 | 4662 check_signals = false; |
4663 } | |
4664 if (AllowUserSignalHandlers) { | |
3956
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4665 if (PrintJNIResolving) { |
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
parents:
3885
diff
changeset
|
4666 tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); |
3607aac85aa9
7051189: Need to suppress info message if -xcheck:jni used with libjsig.so
kevinw
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3885
diff
changeset
|
4667 } |
0 | 4668 check_signals = false; |
4669 } | |
4670 } | |
4671 } | |
4672 | |
4673 | |
4674 void report_error(const char* file_name, int line_no, const char* title, const char* format, ...); | |
4675 | |
4676 const char * signames[] = { | |
4677 "SIG0", | |
4678 "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", | |
4679 "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", | |
4680 "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", | |
4681 "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH", | |
4682 "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT", | |
4683 "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU", | |
4684 "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW", | |
4685 "SIGCANCEL", "SIGLOST" | |
4686 }; | |
4687 | |
4688 const char* os::exception_name(int exception_code, char* buf, size_t size) { | |
4689 if (0 < exception_code && exception_code <= SIGRTMAX) { | |
4690 // signal | |
4691 if (exception_code < sizeof(signames)/sizeof(const char*)) { | |
4692 jio_snprintf(buf, size, "%s", signames[exception_code]); | |
4693 } else { | |
4694 jio_snprintf(buf, size, "SIG%d", exception_code); | |
4695 } | |
4696 return buf; | |
4697 } else { | |
4698 return NULL; | |
4699 } | |
4700 } | |
4701 | |
4702 // (Static) wrappers for the new libthread API | |
4703 int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate; | |
4704 int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate; | |
4705 int_fnP_thread_t_i os::Solaris::_thr_setmutator; | |
4706 int_fnP_thread_t os::Solaris::_thr_suspend_mutator; | |
4707 int_fnP_thread_t os::Solaris::_thr_continue_mutator; | |
4708 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4709 // (Static) wrapper for getisax(2) call. |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4710 os::Solaris::getisax_func_t os::Solaris::_getisax = 0; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4711 |
0 | 4712 // (Static) wrappers for the liblgrp API |
4713 os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home; | |
4714 os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init; | |
4715 os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini; | |
4716 os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root; | |
4717 os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children; | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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parents:
141
diff
changeset
|
4718 os::Solaris::lgrp_resources_func_t os::Solaris::_lgrp_resources; |
0 | 4719 os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps; |
4720 os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale; | |
4721 os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0; | |
4722 | |
4723 // (Static) wrapper for meminfo() call. | |
4724 os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0; | |
4725 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4726 static address resolve_symbol_lazy(const char* name) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4727 address addr = (address) dlsym(RTLD_DEFAULT, name); |
0 | 4728 if(addr == NULL) { |
4729 // RTLD_DEFAULT was not defined on some early versions of 2.5.1 | |
4730 addr = (address) dlsym(RTLD_NEXT, name); | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4731 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4732 return addr; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4733 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4734 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4735 static address resolve_symbol(const char* name) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4736 address addr = resolve_symbol_lazy(name); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4737 if(addr == NULL) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4738 fatal(dlerror()); |
0 | 4739 } |
4740 return addr; | |
4741 } | |
4742 | |
4743 | |
4744 | |
4745 // isT2_libthread() | |
4746 // | |
4747 // Routine to determine if we are currently using the new T2 libthread. | |
4748 // | |
4749 // We determine if we are using T2 by reading /proc/self/lstatus and | |
4750 // looking for a thread with the ASLWP bit set. If we find this status | |
4751 // bit set, we must assume that we are NOT using T2. The T2 team | |
4752 // has approved this algorithm. | |
4753 // | |
4754 // We need to determine if we are running with the new T2 libthread | |
4755 // since setting native thread priorities is handled differently | |
4756 // when using this library. All threads created using T2 are bound | |
4757 // threads. Calling thr_setprio is meaningless in this case. | |
4758 // | |
4759 bool isT2_libthread() { | |
4760 static prheader_t * lwpArray = NULL; | |
4761 static int lwpSize = 0; | |
4762 static int lwpFile = -1; | |
4763 lwpstatus_t * that; | |
4764 char lwpName [128]; | |
4765 bool isT2 = false; | |
4766 | |
4767 #define ADR(x) ((uintptr_t)(x)) | |
4768 #define LWPINDEX(ary,ix) ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1)))) | |
4769 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4770 lwpFile = ::open("/proc/self/lstatus", O_RDONLY, 0); |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4771 if (lwpFile < 0) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4772 if (ThreadPriorityVerbose) warning ("Couldn't open /proc/self/lstatus\n"); |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4773 return false; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4774 } |
0 | 4775 lwpSize = 16*1024; |
4776 for (;;) { | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4777 ::lseek64 (lwpFile, 0, SEEK_SET); |
6197 | 4778 lwpArray = (prheader_t *)NEW_C_HEAP_ARRAY(char, lwpSize, mtInternal); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4779 if (::read(lwpFile, lwpArray, lwpSize) < 0) { |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4780 if (ThreadPriorityVerbose) warning("Error reading /proc/self/lstatus\n"); |
0 | 4781 break; |
4782 } | |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4783 if ((lwpArray->pr_nent * lwpArray->pr_entsize) <= lwpSize) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4784 // We got a good snapshot - now iterate over the list. |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4785 int aslwpcount = 0; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4786 for (int i = 0; i < lwpArray->pr_nent; i++ ) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4787 that = LWPINDEX(lwpArray,i); |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4788 if (that->pr_flags & PR_ASLWP) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4789 aslwpcount++; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4790 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4791 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4792 if (aslwpcount == 0) isT2 = true; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4793 break; |
0 | 4794 } |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4795 lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize; |
6197 | 4796 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); // retry. |
4797 } | |
4798 | |
4799 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4800 ::close (lwpFile); |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4801 if (ThreadPriorityVerbose) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4802 if (isT2) tty->print_cr("We are running with a T2 libthread\n"); |
0 | 4803 else tty->print_cr("We are not running with a T2 libthread\n"); |
4804 } | |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4805 return isT2; |
0 | 4806 } |
4807 | |
4808 | |
4809 void os::Solaris::libthread_init() { | |
4810 address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators"); | |
4811 | |
4812 // Determine if we are running with the new T2 libthread | |
4813 os::Solaris::set_T2_libthread(isT2_libthread()); | |
4814 | |
4815 lwp_priocntl_init(); | |
4816 | |
4817 // RTLD_DEFAULT was not defined on some early versions of 5.5.1 | |
4818 if(func == NULL) { | |
4819 func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators"); | |
4820 // Guarantee that this VM is running on an new enough OS (5.6 or | |
4821 // later) that it will have a new enough libthread.so. | |
4822 guarantee(func != NULL, "libthread.so is too old."); | |
4823 } | |
4824 | |
4825 // Initialize the new libthread getstate API wrappers | |
4826 func = resolve_symbol("thr_getstate"); | |
4827 os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func)); | |
4828 | |
4829 func = resolve_symbol("thr_setstate"); | |
4830 os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func)); | |
4831 | |
4832 func = resolve_symbol("thr_setmutator"); | |
4833 os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func)); | |
4834 | |
4835 func = resolve_symbol("thr_suspend_mutator"); | |
4836 os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
4837 | |
4838 func = resolve_symbol("thr_continue_mutator"); | |
4839 os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
4840 | |
4841 int size; | |
4842 void (*handler_info_func)(address *, int *); | |
4843 handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo")); | |
4844 handler_info_func(&handler_start, &size); | |
4845 handler_end = handler_start + size; | |
4846 } | |
4847 | |
4848 | |
4849 int_fnP_mutex_tP os::Solaris::_mutex_lock; | |
4850 int_fnP_mutex_tP os::Solaris::_mutex_trylock; | |
4851 int_fnP_mutex_tP os::Solaris::_mutex_unlock; | |
4852 int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init; | |
4853 int_fnP_mutex_tP os::Solaris::_mutex_destroy; | |
4854 int os::Solaris::_mutex_scope = USYNC_THREAD; | |
4855 | |
4856 int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait; | |
4857 int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait; | |
4858 int_fnP_cond_tP os::Solaris::_cond_signal; | |
4859 int_fnP_cond_tP os::Solaris::_cond_broadcast; | |
4860 int_fnP_cond_tP_i_vP os::Solaris::_cond_init; | |
4861 int_fnP_cond_tP os::Solaris::_cond_destroy; | |
4862 int os::Solaris::_cond_scope = USYNC_THREAD; | |
4863 | |
4864 void os::Solaris::synchronization_init() { | |
4865 if(UseLWPSynchronization) { | |
4866 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock"))); | |
4867 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock"))); | |
4868 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock"))); | |
4869 os::Solaris::set_mutex_init(lwp_mutex_init); | |
4870 os::Solaris::set_mutex_destroy(lwp_mutex_destroy); | |
4871 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
4872 | |
4873 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait"))); | |
4874 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait"))); | |
4875 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal"))); | |
4876 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast"))); | |
4877 os::Solaris::set_cond_init(lwp_cond_init); | |
4878 os::Solaris::set_cond_destroy(lwp_cond_destroy); | |
4879 os::Solaris::set_cond_scope(USYNC_THREAD); | |
4880 } | |
4881 else { | |
4882 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
4883 os::Solaris::set_cond_scope(USYNC_THREAD); | |
4884 | |
4885 if(UsePthreads) { | |
4886 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock"))); | |
4887 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock"))); | |
4888 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock"))); | |
4889 os::Solaris::set_mutex_init(pthread_mutex_default_init); | |
4890 os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy"))); | |
4891 | |
4892 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait"))); | |
4893 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait"))); | |
4894 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal"))); | |
4895 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast"))); | |
4896 os::Solaris::set_cond_init(pthread_cond_default_init); | |
4897 os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy"))); | |
4898 } | |
4899 else { | |
4900 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock"))); | |
4901 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock"))); | |
4902 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock"))); | |
4903 os::Solaris::set_mutex_init(::mutex_init); | |
4904 os::Solaris::set_mutex_destroy(::mutex_destroy); | |
4905 | |
4906 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait"))); | |
4907 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait"))); | |
4908 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal"))); | |
4909 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast"))); | |
4910 os::Solaris::set_cond_init(::cond_init); | |
4911 os::Solaris::set_cond_destroy(::cond_destroy); | |
4912 } | |
4913 } | |
4914 } | |
4915 | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
4916 bool os::Solaris::liblgrp_init() { |
267
9d6a3a6891f8
6720130: NUMA allocator: The linux version should search for libnuma.so.1
iveresov
parents:
144
diff
changeset
|
4917 void *handle = dlopen("liblgrp.so.1", RTLD_LAZY); |
0 | 4918 if (handle != NULL) { |
4919 os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home"))); | |
4920 os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init"))); | |
4921 os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini"))); | |
4922 os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root"))); | |
4923 os::Solaris::set_lgrp_children(CAST_TO_FN_PTR(lgrp_children_func_t, dlsym(handle, "lgrp_children"))); | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
4924 os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources"))); |
0 | 4925 os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps"))); |
4926 os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t, | |
4927 dlsym(handle, "lgrp_cookie_stale"))); | |
4928 | |
4929 lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER); | |
4930 set_lgrp_cookie(c); | |
462
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4931 return true; |
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|
4932 } |
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4933 return false; |
0 | 4934 } |
4935 | |
4936 void os::Solaris::misc_sym_init() { | |
641
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|
4937 address func; |
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|
4938 |
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|
4939 // getisax |
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|
4940 func = resolve_symbol_lazy("getisax"); |
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6812587: Use auxv to determine SPARC hardware features on Solaris
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|
4941 if (func != NULL) { |
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|
4942 os::Solaris::_getisax = CAST_TO_FN_PTR(getisax_func_t, func); |
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|
4943 } |
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|
4944 |
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6812587: Use auxv to determine SPARC hardware features on Solaris
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|
4945 // meminfo |
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|
4946 func = resolve_symbol_lazy("meminfo"); |
0 | 4947 if (func != NULL) { |
4948 os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func)); | |
4949 } | |
4950 } | |
4951 | |
641
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4952 uint_t os::Solaris::getisax(uint32_t* array, uint_t n) { |
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4953 assert(_getisax != NULL, "_getisax not set"); |
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4954 return _getisax(array, n); |
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|
4955 } |
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|
4956 |
0 | 4957 // int pset_getloadavg(psetid_t pset, double loadavg[], int nelem); |
4958 typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem); | |
4959 static pset_getloadavg_type pset_getloadavg_ptr = NULL; | |
4960 | |
4961 void init_pset_getloadavg_ptr(void) { | |
4962 pset_getloadavg_ptr = | |
4963 (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg"); | |
4964 if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) { | |
4965 warning("pset_getloadavg function not found"); | |
4966 } | |
4967 } | |
4968 | |
4969 int os::Solaris::_dev_zero_fd = -1; | |
4970 | |
4971 // this is called _before_ the global arguments have been parsed | |
4972 void os::init(void) { | |
4973 _initial_pid = getpid(); | |
4974 | |
4975 max_hrtime = first_hrtime = gethrtime(); | |
4976 | |
4977 init_random(1234567); | |
4978 | |
4979 page_size = sysconf(_SC_PAGESIZE); | |
4980 if (page_size == -1) | |
1490
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4981 fatal(err_msg("os_solaris.cpp: os::init: sysconf failed (%s)", |
f03d0a26bf83
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4982 strerror(errno))); |
0 | 4983 init_page_sizes((size_t) page_size); |
4984 | |
4985 Solaris::initialize_system_info(); | |
4986 | |
641
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4987 // Initialize misc. symbols as soon as possible, so we can use them |
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|
4988 // if we need them. |
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diff
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|
4989 Solaris::misc_sym_init(); |
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|
4990 |
1980
828eafbd85cc
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4991 int fd = ::open("/dev/zero", O_RDWR); |
0 | 4992 if (fd < 0) { |
1490
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|
4993 fatal(err_msg("os::init: cannot open /dev/zero (%s)", strerror(errno))); |
0 | 4994 } else { |
4995 Solaris::set_dev_zero_fd(fd); | |
4996 | |
4997 // Close on exec, child won't inherit. | |
4998 fcntl(fd, F_SETFD, FD_CLOEXEC); | |
4999 } | |
5000 | |
5001 clock_tics_per_sec = CLK_TCK; | |
5002 | |
5003 // check if dladdr1() exists; dladdr1 can provide more information than | |
5004 // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9 | |
5005 // and is available on linker patches for 5.7 and 5.8. | |
5006 // libdl.so must have been loaded, this call is just an entry lookup | |
5007 void * hdl = dlopen("libdl.so", RTLD_NOW); | |
5008 if (hdl) | |
5009 dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1")); | |
5010 | |
5011 // (Solaris only) this switches to calls that actually do locking. | |
5012 ThreadCritical::initialize(); | |
5013 | |
5014 main_thread = thr_self(); | |
5015 | |
5016 // Constant minimum stack size allowed. It must be at least | |
5017 // the minimum of what the OS supports (thr_min_stack()), and | |
5018 // enough to allow the thread to get to user bytecode execution. | |
5019 Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed); | |
5020 // If the pagesize of the VM is greater than 8K determine the appropriate | |
5021 // number of initial guard pages. The user can change this with the | |
5022 // command line arguments, if needed. | |
5023 if (vm_page_size() > 8*K) { | |
5024 StackYellowPages = 1; | |
5025 StackRedPages = 1; | |
5026 StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size(); | |
5027 } | |
5028 } | |
5029 | |
5030 // To install functions for atexit system call | |
5031 extern "C" { | |
5032 static void perfMemory_exit_helper() { | |
5033 perfMemory_exit(); | |
5034 } | |
5035 } | |
5036 | |
5037 // this is called _after_ the global arguments have been parsed | |
5038 jint os::init_2(void) { | |
5039 // try to enable extended file IO ASAP, see 6431278 | |
5040 os::Solaris::try_enable_extended_io(); | |
5041 | |
5042 // Allocate a single page and mark it as readable for safepoint polling. Also | |
5043 // use this first mmap call to check support for MAP_ALIGN. | |
5044 address polling_page = (address)Solaris::mmap_chunk((char*)page_size, | |
5045 page_size, | |
5046 MAP_PRIVATE | MAP_ALIGN, | |
5047 PROT_READ); | |
5048 if (polling_page == NULL) { | |
5049 has_map_align = false; | |
5050 polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE, | |
5051 PROT_READ); | |
5052 } | |
5053 | |
5054 os::set_polling_page(polling_page); | |
5055 | |
5056 #ifndef PRODUCT | |
5057 if( Verbose && PrintMiscellaneous ) | |
5058 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
5059 #endif | |
5060 | |
5061 if (!UseMembar) { | |
5062 address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE ); | |
5063 guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page"); | |
5064 os::set_memory_serialize_page( mem_serialize_page ); | |
5065 | |
5066 #ifndef PRODUCT | |
5067 if(Verbose && PrintMiscellaneous) | |
5068 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
5069 #endif | |
12233
40136aa2cdb1
8010722: assert: failed: heap size is too big for compressed oops
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|
5070 } |
0 | 5071 |
5072 // Check minimum allowable stack size for thread creation and to initialize | |
5073 // the java system classes, including StackOverflowError - depends on page | |
5074 // size. Add a page for compiler2 recursion in main thread. | |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1865
diff
changeset
|
5075 // Add in 2*BytesPerWord times page size to account for VM stack during |
0 | 5076 // class initialization depending on 32 or 64 bit VM. |
1867
b6aedd1acdc0
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coleenp
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diff
changeset
|
5077 os::Solaris::min_stack_allowed = MAX2(os::Solaris::min_stack_allowed, |
b6aedd1acdc0
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1865
diff
changeset
|
5078 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
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1865
diff
changeset
|
5079 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size); |
0 | 5080 |
5081 size_t threadStackSizeInBytes = ThreadStackSize * K; | |
5082 if (threadStackSizeInBytes != 0 && | |
1867
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coleenp
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diff
changeset
|
5083 threadStackSizeInBytes < os::Solaris::min_stack_allowed) { |
0 | 5084 tty->print_cr("\nThe stack size specified is too small, Specify at least %dk", |
1867
b6aedd1acdc0
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coleenp
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1865
diff
changeset
|
5085 os::Solaris::min_stack_allowed/K); |
0 | 5086 return JNI_ERR; |
5087 } | |
5088 | |
5089 // For 64kbps there will be a 64kb page size, which makes | |
5090 // the usable default stack size quite a bit less. Increase the | |
5091 // stack for 64kb (or any > than 8kb) pages, this increases | |
5092 // virtual memory fragmentation (since we're not creating the | |
5093 // stack on a power of 2 boundary. The real fix for this | |
5094 // should be to fix the guard page mechanism. | |
5095 | |
5096 if (vm_page_size() > 8*K) { | |
5097 threadStackSizeInBytes = (threadStackSizeInBytes != 0) | |
5098 ? threadStackSizeInBytes + | |
5099 ((StackYellowPages + StackRedPages) * vm_page_size()) | |
5100 : 0; | |
5101 ThreadStackSize = threadStackSizeInBytes/K; | |
5102 } | |
5103 | |
5104 // Make the stack size a multiple of the page size so that | |
5105 // the yellow/red zones can be guarded. | |
5106 JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, | |
5107 vm_page_size())); | |
5108 | |
5109 Solaris::libthread_init(); | |
462
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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|
5110 |
0 | 5111 if (UseNUMA) { |
462
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|
5112 if (!Solaris::liblgrp_init()) { |
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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|
5113 UseNUMA = false; |
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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diff
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|
5114 } else { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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diff
changeset
|
5115 size_t lgrp_limit = os::numa_get_groups_num(); |
6197 | 5116 int *lgrp_ids = NEW_C_HEAP_ARRAY(int, lgrp_limit, mtInternal); |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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diff
changeset
|
5117 size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit); |
6197 | 5118 FREE_C_HEAP_ARRAY(int, lgrp_ids, mtInternal); |
462
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
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diff
changeset
|
5119 if (lgrp_num < 2) { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
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diff
changeset
|
5120 // There's only one locality group, disable NUMA. |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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diff
changeset
|
5121 UseNUMA = false; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
changeset
|
5122 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5123 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
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|
5124 if (!UseNUMA && ForceNUMA) { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
changeset
|
5125 UseNUMA = true; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
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|
5126 } |
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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diff
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|
5127 } |
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|
5128 |
0 | 5129 Solaris::signal_sets_init(); |
5130 Solaris::init_signal_mem(); | |
5131 Solaris::install_signal_handlers(); | |
5132 | |
5133 if (libjsigversion < JSIG_VERSION_1_4_1) { | |
5134 Maxlibjsigsigs = OLDMAXSIGNUM; | |
5135 } | |
5136 | |
5137 // initialize synchronization primitives to use either thread or | |
5138 // lwp synchronization (controlled by UseLWPSynchronization) | |
5139 Solaris::synchronization_init(); | |
5140 | |
5141 if (MaxFDLimit) { | |
5142 // set the number of file descriptors to max. print out error | |
5143 // if getrlimit/setrlimit fails but continue regardless. | |
5144 struct rlimit nbr_files; | |
5145 int status = getrlimit(RLIMIT_NOFILE, &nbr_files); | |
5146 if (status != 0) { | |
5147 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5148 perror("os::init_2 getrlimit failed"); | |
5149 } else { | |
5150 nbr_files.rlim_cur = nbr_files.rlim_max; | |
5151 status = setrlimit(RLIMIT_NOFILE, &nbr_files); | |
5152 if (status != 0) { | |
5153 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5154 perror("os::init_2 setrlimit failed"); | |
5155 } | |
5156 } | |
5157 } | |
5158 | |
5159 // Calculate theoretical max. size of Threads to guard gainst | |
5160 // artifical out-of-memory situations, where all available address- | |
5161 // space has been reserved by thread stacks. Default stack size is 1Mb. | |
5162 size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ? | |
5163 JavaThread::stack_size_at_create() : (1*K*K); | |
5164 assert(pre_thread_stack_size != 0, "Must have a stack"); | |
5165 // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when | |
5166 // we should start doing Virtual Memory banging. Currently when the threads will | |
5167 // have used all but 200Mb of space. | |
5168 size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K); | |
5169 Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size; | |
5170 | |
5171 // at-exit methods are called in the reverse order of their registration. | |
5172 // In Solaris 7 and earlier, atexit functions are called on return from | |
5173 // main or as a result of a call to exit(3C). There can be only 32 of | |
5174 // these functions registered and atexit() does not set errno. In Solaris | |
5175 // 8 and later, there is no limit to the number of functions registered | |
5176 // and atexit() sets errno. In addition, in Solaris 8 and later, atexit | |
5177 // functions are called upon dlclose(3DL) in addition to return from main | |
5178 // and exit(3C). | |
5179 | |
5180 if (PerfAllowAtExitRegistration) { | |
5181 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
5182 // atexit functions can be delayed until process exit time, which | |
5183 // can be problematic for embedded VM situations. Embedded VMs should | |
5184 // call DestroyJavaVM() to assure that VM resources are released. | |
5185 | |
5186 // note: perfMemory_exit_helper atexit function may be removed in | |
5187 // the future if the appropriate cleanup code can be added to the | |
5188 // VM_Exit VMOperation's doit method. | |
5189 if (atexit(perfMemory_exit_helper) != 0) { | |
5190 warning("os::init2 atexit(perfMemory_exit_helper) failed"); | |
5191 } | |
5192 } | |
5193 | |
5194 // Init pset_loadavg function pointer | |
5195 init_pset_getloadavg_ptr(); | |
5196 | |
5197 return JNI_OK; | |
5198 } | |
5199 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5200 void os::init_3(void) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5201 return; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1642
diff
changeset
|
5202 } |
0 | 5203 |
5204 // Mark the polling page as unreadable | |
5205 void os::make_polling_page_unreadable(void) { | |
5206 if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 ) | |
5207 fatal("Could not disable polling page"); | |
5208 }; | |
5209 | |
5210 // Mark the polling page as readable | |
5211 void os::make_polling_page_readable(void) { | |
5212 if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 ) | |
5213 fatal("Could not enable polling page"); | |
5214 }; | |
5215 | |
5216 // OS interface. | |
5217 | |
5218 bool os::check_heap(bool force) { return true; } | |
5219 | |
5220 typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr); | |
5221 static vsnprintf_t sol_vsnprintf = NULL; | |
5222 | |
5223 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { | |
5224 if (!sol_vsnprintf) { | |
5225 //search for the named symbol in the objects that were loaded after libjvm | |
5226 void* where = RTLD_NEXT; | |
5227 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5228 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5229 if (!sol_vsnprintf){ | |
5230 //search for the named symbol in the objects that were loaded before libjvm | |
5231 where = RTLD_DEFAULT; | |
5232 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5233 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5234 assert(sol_vsnprintf != NULL, "vsnprintf not found"); | |
5235 } | |
5236 } | |
5237 return (*sol_vsnprintf)(buf, count, fmt, argptr); | |
5238 } | |
5239 | |
5240 | |
5241 // Is a (classpath) directory empty? | |
5242 bool os::dir_is_empty(const char* path) { | |
5243 DIR *dir = NULL; | |
5244 struct dirent *ptr; | |
5245 | |
5246 dir = opendir(path); | |
5247 if (dir == NULL) return true; | |
5248 | |
5249 /* Scan the directory */ | |
5250 bool result = true; | |
5251 char buf[sizeof(struct dirent) + MAX_PATH]; | |
5252 struct dirent *dbuf = (struct dirent *) buf; | |
5253 while (result && (ptr = readdir(dir, dbuf)) != NULL) { | |
5254 if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { | |
5255 result = false; | |
5256 } | |
5257 } | |
5258 closedir(dir); | |
5259 return result; | |
5260 } | |
5261 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5262 // This code originates from JDK's sysOpen and open64_w |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5263 // from src/solaris/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5264 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5265 #ifndef O_DELETE |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5266 #define O_DELETE 0x10000 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5267 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5268 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5269 // Open a file. Unlink the file immediately after open returns |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5270 // if the specified oflag has the O_DELETE flag set. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5271 // O_DELETE is used only in j2se/src/share/native/java/util/zip/ZipFile.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5272 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5273 int os::open(const char *path, int oflag, int mode) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5274 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5275 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5276 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5277 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5278 int fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5279 int o_delete = (oflag & O_DELETE); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5280 oflag = oflag & ~O_DELETE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5281 |
2097 | 5282 fd = ::open64(path, oflag, mode); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5283 if (fd == -1) return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5284 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5285 //If the open succeeded, the file might still be a directory |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5286 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5287 struct stat64 buf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5288 int ret = ::fstat64(fd, &buf64); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5289 int st_mode = buf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5290 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5291 if (ret != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5292 if ((st_mode & S_IFMT) == S_IFDIR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5293 errno = EISDIR; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5294 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5295 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5296 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5297 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5298 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5299 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5300 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5301 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5302 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5303 * 32-bit Solaris systems suffer from: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5304 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5305 * - an historical default soft limit of 256 per-process file |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5306 * descriptors that is too low for many Java programs. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5307 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5308 * - a design flaw where file descriptors created using stdio |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5309 * fopen must be less than 256, _even_ when the first limit above |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5310 * has been raised. This can cause calls to fopen (but not calls to |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5311 * open, for example) to fail mysteriously, perhaps in 3rd party |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5312 * native code (although the JDK itself uses fopen). One can hardly |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5313 * criticize them for using this most standard of all functions. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5314 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5315 * We attempt to make everything work anyways by: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5316 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5317 * - raising the soft limit on per-process file descriptors beyond |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5318 * 256 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5319 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5320 * - As of Solaris 10u4, we can request that Solaris raise the 256 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5321 * stdio fopen limit by calling function enable_extended_FILE_stdio. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5322 * This is done in init_2 and recorded in enabled_extended_FILE_stdio |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5323 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5324 * - If we are stuck on an old (pre 10u4) Solaris system, we can |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5325 * workaround the bug by remapping non-stdio file descriptors below |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5326 * 256 to ones beyond 256, which is done below. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5327 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5328 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5329 * 1085341: 32-bit stdio routines should support file descriptors >255 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5330 * 6533291: Work around 32-bit Solaris stdio limit of 256 open files |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5331 * 6431278: Netbeans crash on 32 bit Solaris: need to call |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5332 * enable_extended_FILE_stdio() in VM initialisation |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5333 * Giri Mandalika's blog |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5334 * http://technopark02.blogspot.com/2005_05_01_archive.html |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5335 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5336 #ifndef _LP64 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5337 if ((!enabled_extended_FILE_stdio) && fd < 256) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5338 int newfd = ::fcntl(fd, F_DUPFD, 256); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5339 if (newfd != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5340 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5341 fd = newfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5342 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5343 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5344 #endif // 32-bit Solaris |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5345 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5346 * All file descriptors that are opened in the JVM and not |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5347 * specifically destined for a subprocess should have the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5348 * close-on-exec flag set. If we don't set it, then careless 3rd |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5349 * party native code might fork and exec without closing all |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5350 * appropriate file descriptors (e.g. as we do in closeDescriptors in |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5351 * UNIXProcess.c), and this in turn might: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5352 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5353 * - cause end-of-file to fail to be detected on some file |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5354 * descriptors, resulting in mysterious hangs, or |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5355 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5356 * - might cause an fopen in the subprocess to fail on a system |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5357 * suffering from bug 1085341. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5358 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5359 * (Yes, the default setting of the close-on-exec flag is a Unix |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5360 * design flaw) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5361 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5362 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5363 * 1085341: 32-bit stdio routines should support file descriptors >255 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5364 * 4843136: (process) pipe file descriptor from Runtime.exec not being closed |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5365 * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5366 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5367 #ifdef FD_CLOEXEC |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5368 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5369 int flags = ::fcntl(fd, F_GETFD); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5370 if (flags != -1) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5371 ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5372 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5373 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5374 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5375 if (o_delete != 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5376 ::unlink(path); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5377 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5378 return fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5379 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5380 |
0 | 5381 // create binary file, rewriting existing file if required |
5382 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
5383 int oflags = O_WRONLY | O_CREAT; | |
5384 if (!rewrite_existing) { | |
5385 oflags |= O_EXCL; | |
5386 } | |
5387 return ::open64(path, oflags, S_IREAD | S_IWRITE); | |
5388 } | |
5389 | |
5390 // return current position of file pointer | |
5391 jlong os::current_file_offset(int fd) { | |
5392 return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); | |
5393 } | |
5394 | |
5395 // move file pointer to the specified offset | |
5396 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
5397 return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); | |
5398 } | |
5399 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5400 jlong os::lseek(int fd, jlong offset, int whence) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5401 return (jlong) ::lseek64(fd, offset, whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5402 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5403 |
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5404 char * os::native_path(char *path) { |
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diff
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|
5405 return path; |
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|
5406 } |
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|
5407 |
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5408 int os::ftruncate(int fd, jlong length) { |
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5409 return ::ftruncate64(fd, length); |
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changeset
|
5410 } |
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|
5411 |
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|
5412 int os::fsync(int fd) { |
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|
5413 RESTARTABLE_RETURN_INT(::fsync(fd)); |
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|
5414 } |
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|
5415 |
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|
5416 int os::available(int fd, jlong *bytes) { |
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|
5417 jlong cur, end; |
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|
5418 int mode; |
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|
5419 struct stat64 buf64; |
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|
5420 |
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5421 if (::fstat64(fd, &buf64) >= 0) { |
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|
5422 mode = buf64.st_mode; |
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|
5423 if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { |
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|
5424 /* |
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5425 * XXX: is the following call interruptible? If so, this might |
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5426 * need to go through the INTERRUPT_IO() wrapper as for other |
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|
5427 * blocking, interruptible calls in this file. |
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|
5428 */ |
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|
5429 int n,ioctl_return; |
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|
5430 |
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5431 INTERRUPTIBLE(::ioctl(fd, FIONREAD, &n),ioctl_return,os::Solaris::clear_interrupted); |
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5432 if (ioctl_return>= 0) { |
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|
5433 *bytes = n; |
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|
5434 return 1; |
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|
5435 } |
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|
5436 } |
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|
5437 } |
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|
5438 if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { |
828eafbd85cc
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|
5439 return 0; |
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|
5440 } else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) { |
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|
5441 return 0; |
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|
5442 } else if (::lseek64(fd, cur, SEEK_SET) == -1) { |
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|
5443 return 0; |
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changeset
|
5444 } |
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|
5445 *bytes = end - cur; |
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|
5446 return 1; |
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|
5447 } |
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|
5448 |
0 | 5449 // Map a block of memory. |
6197 | 5450 char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5451 char *addr, size_t bytes, bool read_only, |
5452 bool allow_exec) { | |
5453 int prot; | |
5454 int flags; | |
5455 | |
5456 if (read_only) { | |
5457 prot = PROT_READ; | |
5458 flags = MAP_SHARED; | |
5459 } else { | |
5460 prot = PROT_READ | PROT_WRITE; | |
5461 flags = MAP_PRIVATE; | |
5462 } | |
5463 | |
5464 if (allow_exec) { | |
5465 prot |= PROT_EXEC; | |
5466 } | |
5467 | |
5468 if (addr != NULL) { | |
5469 flags |= MAP_FIXED; | |
5470 } | |
5471 | |
5472 char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, | |
5473 fd, file_offset); | |
5474 if (mapped_address == MAP_FAILED) { | |
5475 return NULL; | |
5476 } | |
5477 return mapped_address; | |
5478 } | |
5479 | |
5480 | |
5481 // Remap a block of memory. | |
6197 | 5482 char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5483 char *addr, size_t bytes, bool read_only, |
5484 bool allow_exec) { | |
5485 // same as map_memory() on this OS | |
5486 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
5487 allow_exec); | |
5488 } | |
5489 | |
5490 | |
5491 // Unmap a block of memory. | |
6197 | 5492 bool os::pd_unmap_memory(char* addr, size_t bytes) { |
0 | 5493 return munmap(addr, bytes) == 0; |
5494 } | |
5495 | |
5496 void os::pause() { | |
5497 char filename[MAX_PATH]; | |
5498 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
5499 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
5500 } else { | |
5501 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
5502 } | |
5503 | |
5504 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
5505 if (fd != -1) { | |
5506 struct stat buf; | |
1980
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|
5507 ::close(fd); |
0 | 5508 while (::stat(filename, &buf) == 0) { |
5509 (void)::poll(NULL, 0, 100); | |
5510 } | |
5511 } else { | |
5512 jio_fprintf(stderr, | |
5513 "Could not open pause file '%s', continuing immediately.\n", filename); | |
5514 } | |
5515 } | |
5516 | |
5517 #ifndef PRODUCT | |
5518 #ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5519 // Turn this on if you need to trace synch operations. | |
5520 // Set RECORD_SYNCH_LIMIT to a large-enough value, | |
5521 // and call record_synch_enable and record_synch_disable | |
5522 // around the computation of interest. | |
5523 | |
5524 void record_synch(char* name, bool returning); // defined below | |
5525 | |
5526 class RecordSynch { | |
5527 char* _name; | |
5528 public: | |
5529 RecordSynch(char* name) :_name(name) | |
5530 { record_synch(_name, false); } | |
5531 ~RecordSynch() { record_synch(_name, true); } | |
5532 }; | |
5533 | |
5534 #define CHECK_SYNCH_OP(ret, name, params, args, inner) \ | |
5535 extern "C" ret name params { \ | |
5536 typedef ret name##_t params; \ | |
5537 static name##_t* implem = NULL; \ | |
5538 static int callcount = 0; \ | |
5539 if (implem == NULL) { \ | |
5540 implem = (name##_t*) dlsym(RTLD_NEXT, #name); \ | |
5541 if (implem == NULL) fatal(dlerror()); \ | |
5542 } \ | |
5543 ++callcount; \ | |
5544 RecordSynch _rs(#name); \ | |
5545 inner; \ | |
5546 return implem args; \ | |
5547 } | |
5548 // in dbx, examine callcounts this way: | |
5549 // for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done | |
5550 | |
5551 #define CHECK_POINTER_OK(p) \ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6200
diff
changeset
|
5552 (!Universe::is_fully_initialized() || !Universe::is_reserved_heap((oop)(p))) |
0 | 5553 #define CHECK_MU \ |
5554 if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only."); | |
5555 #define CHECK_CV \ | |
5556 if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only."); | |
5557 #define CHECK_P(p) \ | |
5558 if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only."); | |
5559 | |
5560 #define CHECK_MUTEX(mutex_op) \ | |
5561 CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU); | |
5562 | |
5563 CHECK_MUTEX( mutex_lock) | |
5564 CHECK_MUTEX( _mutex_lock) | |
5565 CHECK_MUTEX( mutex_unlock) | |
5566 CHECK_MUTEX(_mutex_unlock) | |
5567 CHECK_MUTEX( mutex_trylock) | |
5568 CHECK_MUTEX(_mutex_trylock) | |
5569 | |
5570 #define CHECK_COND(cond_op) \ | |
5571 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV); | |
5572 | |
5573 CHECK_COND( cond_wait); | |
5574 CHECK_COND(_cond_wait); | |
5575 CHECK_COND(_cond_wait_cancel); | |
5576 | |
5577 #define CHECK_COND2(cond_op) \ | |
5578 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV); | |
5579 | |
5580 CHECK_COND2( cond_timedwait); | |
5581 CHECK_COND2(_cond_timedwait); | |
5582 CHECK_COND2(_cond_timedwait_cancel); | |
5583 | |
5584 // do the _lwp_* versions too | |
5585 #define mutex_t lwp_mutex_t | |
5586 #define cond_t lwp_cond_t | |
5587 CHECK_MUTEX( _lwp_mutex_lock) | |
5588 CHECK_MUTEX( _lwp_mutex_unlock) | |
5589 CHECK_MUTEX( _lwp_mutex_trylock) | |
5590 CHECK_MUTEX( __lwp_mutex_lock) | |
5591 CHECK_MUTEX( __lwp_mutex_unlock) | |
5592 CHECK_MUTEX( __lwp_mutex_trylock) | |
5593 CHECK_MUTEX(___lwp_mutex_lock) | |
5594 CHECK_MUTEX(___lwp_mutex_unlock) | |
5595 | |
5596 CHECK_COND( _lwp_cond_wait); | |
5597 CHECK_COND( __lwp_cond_wait); | |
5598 CHECK_COND(___lwp_cond_wait); | |
5599 | |
5600 CHECK_COND2( _lwp_cond_timedwait); | |
5601 CHECK_COND2( __lwp_cond_timedwait); | |
5602 #undef mutex_t | |
5603 #undef cond_t | |
5604 | |
5605 CHECK_SYNCH_OP(int, _lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5606 CHECK_SYNCH_OP(int,__lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5607 CHECK_SYNCH_OP(int, _lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5608 CHECK_SYNCH_OP(int,__lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5609 CHECK_SYNCH_OP(int, _lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5610 CHECK_SYNCH_OP(int,__lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5611 CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5612 CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5613 | |
5614 | |
5615 // recording machinery: | |
5616 | |
5617 enum { RECORD_SYNCH_LIMIT = 200 }; | |
5618 char* record_synch_name[RECORD_SYNCH_LIMIT]; | |
5619 void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT]; | |
5620 bool record_synch_returning[RECORD_SYNCH_LIMIT]; | |
5621 thread_t record_synch_thread[RECORD_SYNCH_LIMIT]; | |
5622 int record_synch_count = 0; | |
5623 bool record_synch_enabled = false; | |
5624 | |
5625 // in dbx, examine recorded data this way: | |
5626 // for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done | |
5627 | |
5628 void record_synch(char* name, bool returning) { | |
5629 if (record_synch_enabled) { | |
5630 if (record_synch_count < RECORD_SYNCH_LIMIT) { | |
5631 record_synch_name[record_synch_count] = name; | |
5632 record_synch_returning[record_synch_count] = returning; | |
5633 record_synch_thread[record_synch_count] = thr_self(); | |
5634 record_synch_arg0ptr[record_synch_count] = &name; | |
5635 record_synch_count++; | |
5636 } | |
5637 // put more checking code here: | |
5638 // ... | |
5639 } | |
5640 } | |
5641 | |
5642 void record_synch_enable() { | |
5643 // start collecting trace data, if not already doing so | |
5644 if (!record_synch_enabled) record_synch_count = 0; | |
5645 record_synch_enabled = true; | |
5646 } | |
5647 | |
5648 void record_synch_disable() { | |
5649 // stop collecting trace data | |
5650 record_synch_enabled = false; | |
5651 } | |
5652 | |
5653 #endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5654 #endif // PRODUCT | |
5655 | |
5656 const intptr_t thr_time_off = (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5657 const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) - | |
5658 (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5659 | |
5660 | |
5661 // JVMTI & JVM monitoring and management support | |
5662 // The thread_cpu_time() and current_thread_cpu_time() are only | |
5663 // supported if is_thread_cpu_time_supported() returns true. | |
5664 // They are not supported on Solaris T1. | |
5665 | |
5666 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
5667 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
5668 // of a thread. | |
5669 // | |
5670 // current_thread_cpu_time() and thread_cpu_time(Thread *) | |
5671 // returns the fast estimate available on the platform. | |
5672 | |
5673 // hrtime_t gethrvtime() return value includes | |
5674 // user time but does not include system time | |
5675 jlong os::current_thread_cpu_time() { | |
5676 return (jlong) gethrvtime(); | |
5677 } | |
5678 | |
5679 jlong os::thread_cpu_time(Thread *thread) { | |
5680 // return user level CPU time only to be consistent with | |
5681 // what current_thread_cpu_time returns. | |
5682 // thread_cpu_time_info() must be changed if this changes | |
5683 return os::thread_cpu_time(thread, false /* user time only */); | |
5684 } | |
5685 | |
5686 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
5687 if (user_sys_cpu_time) { | |
5688 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
5689 } else { | |
5690 return os::current_thread_cpu_time(); | |
5691 } | |
5692 } | |
5693 | |
5694 jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { | |
5695 char proc_name[64]; | |
5696 int count; | |
5697 prusage_t prusage; | |
5698 jlong lwp_time; | |
5699 int fd; | |
5700 | |
5701 sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage", | |
5702 getpid(), | |
5703 thread->osthread()->lwp_id()); | |
1980
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diff
changeset
|
5704 fd = ::open(proc_name, O_RDONLY); |
0 | 5705 if ( fd == -1 ) return -1; |
5706 | |
5707 do { | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
5708 count = ::pread(fd, |
0 | 5709 (void *)&prusage.pr_utime, |
5710 thr_time_size, | |
5711 thr_time_off); | |
5712 } while (count < 0 && errno == EINTR); | |
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ikrylov
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1972
diff
changeset
|
5713 ::close(fd); |
0 | 5714 if ( count < 0 ) return -1; |
5715 | |
5716 if (user_sys_cpu_time) { | |
5717 // user + system CPU time | |
5718 lwp_time = (((jlong)prusage.pr_stime.tv_sec + | |
5719 (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) + | |
5720 (jlong)prusage.pr_stime.tv_nsec + | |
5721 (jlong)prusage.pr_utime.tv_nsec; | |
5722 } else { | |
5723 // user level CPU time only | |
5724 lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) + | |
5725 (jlong)prusage.pr_utime.tv_nsec; | |
5726 } | |
5727 | |
5728 return(lwp_time); | |
5729 } | |
5730 | |
5731 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
5732 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
5733 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
5734 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
5735 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
5736 } | |
5737 | |
5738 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
5739 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
5740 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
5741 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
5742 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
5743 } | |
5744 | |
5745 bool os::is_thread_cpu_time_supported() { | |
5746 if ( os::Solaris::T2_libthread() || UseBoundThreads ) { | |
5747 return true; | |
5748 } else { | |
5749 return false; | |
5750 } | |
5751 } | |
5752 | |
5753 // System loadavg support. Returns -1 if load average cannot be obtained. | |
5754 // Return the load average for our processor set if the primitive exists | |
5755 // (Solaris 9 and later). Otherwise just return system wide loadavg. | |
5756 int os::loadavg(double loadavg[], int nelem) { | |
5757 if (pset_getloadavg_ptr != NULL) { | |
5758 return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem); | |
5759 } else { | |
5760 return ::getloadavg(loadavg, nelem); | |
5761 } | |
5762 } | |
5763 | |
5764 //--------------------------------------------------------------------------------- | |
5765 | |
1681
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bobv
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5766 bool os::find(address addr, outputStream* st) { |
0 | 5767 Dl_info dlinfo; |
5768 memset(&dlinfo, 0, sizeof(dlinfo)); | |
11092
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|
5769 if (dladdr(addr, &dlinfo) != 0) { |
59b052799158
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|
5770 st->print(PTR_FORMAT ": ", addr); |
59b052799158
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|
5771 if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) { |
1681
126ea7725993
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bobv
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changeset
|
5772 st->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr); |
11092
59b052799158
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changeset
|
5773 } else if (dlinfo.dli_fbase != NULL) |
1681
126ea7725993
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|
5774 st->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase); |
0 | 5775 else |
1681
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|
5776 st->print("<absolute address>"); |
11092
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|
5777 if (dlinfo.dli_fname != NULL) { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
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|
5778 st->print(" in %s", dlinfo.dli_fname); |
59b052799158
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|
5779 } |
59b052799158
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|
5780 if (dlinfo.dli_fbase != NULL) { |
59b052799158
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|
5781 st->print(" at " PTR_FORMAT, dlinfo.dli_fbase); |
59b052799158
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|
5782 } |
1681
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|
5783 st->cr(); |
0 | 5784 |
5785 if (Verbose) { | |
5786 // decode some bytes around the PC | |
9060
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|
5787 address begin = clamp_address_in_page(addr-40, addr, os::vm_page_size()); |
cc32ccaaf47f
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mikael
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diff
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|
5788 address end = clamp_address_in_page(addr+40, addr, os::vm_page_size()); |
0 | 5789 address lowest = (address) dlinfo.dli_sname; |
5790 if (!lowest) lowest = (address) dlinfo.dli_fbase; | |
5791 if (begin < lowest) begin = lowest; | |
5792 Dl_info dlinfo2; | |
11092
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|
5793 if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr |
0 | 5794 && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) |
5795 end = (address) dlinfo2.dli_saddr; | |
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|
5796 Disassembler::decode(begin, end, st); |
0 | 5797 } |
5798 return true; | |
5799 } | |
5800 return false; | |
5801 } | |
5802 | |
5803 // Following function has been added to support HotSparc's libjvm.so running | |
5804 // under Solaris production JDK 1.2.2 / 1.3.0. These came from | |
5805 // src/solaris/hpi/native_threads in the EVM codebase. | |
5806 // | |
5807 // NOTE: This is no longer needed in the 1.3.1 and 1.4 production release | |
5808 // libraries and should thus be removed. We will leave it behind for a while | |
5809 // until we no longer want to able to run on top of 1.3.0 Solaris production | |
5810 // JDK. See 4341971. | |
5811 | |
5812 #define STACK_SLACK 0x800 | |
5813 | |
5814 extern "C" { | |
5815 intptr_t sysThreadAvailableStackWithSlack() { | |
5816 stack_t st; | |
5817 intptr_t retval, stack_top; | |
5818 retval = thr_stksegment(&st); | |
5819 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
5820 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
5821 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
5822 stack_top=(intptr_t)st.ss_sp-st.ss_size; | |
5823 return ((intptr_t)&stack_top - stack_top - STACK_SLACK); | |
5824 } | |
5825 } | |
5826 | |
5827 // ObjectMonitor park-unpark infrastructure ... | |
5828 // | |
5829 // We implement Solaris and Linux PlatformEvents with the | |
5830 // obvious condvar-mutex-flag triple. | |
5831 // Another alternative that works quite well is pipes: | |
5832 // Each PlatformEvent consists of a pipe-pair. | |
5833 // The thread associated with the PlatformEvent | |
5834 // calls park(), which reads from the input end of the pipe. | |
5835 // Unpark() writes into the other end of the pipe. | |
5836 // The write-side of the pipe must be set NDELAY. | |
5837 // Unfortunately pipes consume a large # of handles. | |
5838 // Native solaris lwp_park() and lwp_unpark() work nicely, too. | |
5839 // Using pipes for the 1st few threads might be workable, however. | |
5840 // | |
5841 // park() is permitted to return spuriously. | |
5842 // Callers of park() should wrap the call to park() in | |
5843 // an appropriate loop. A litmus test for the correct | |
5844 // usage of park is the following: if park() were modified | |
5845 // to immediately return 0 your code should still work, | |
5846 // albeit degenerating to a spin loop. | |
5847 // | |
5848 // An interesting optimization for park() is to use a trylock() | |
5849 // to attempt to acquire the mutex. If the trylock() fails | |
5850 // then we know that a concurrent unpark() operation is in-progress. | |
5851 // in that case the park() code could simply set _count to 0 | |
5852 // and return immediately. The subsequent park() operation *might* | |
5853 // return immediately. That's harmless as the caller of park() is | |
5854 // expected to loop. By using trylock() we will have avoided a | |
5855 // avoided a context switch caused by contention on the per-thread mutex. | |
5856 // | |
5857 // TODO-FIXME: | |
5858 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the | |
5859 // objectmonitor implementation. | |
5860 // 2. Collapse the JSR166 parker event, and the | |
5861 // objectmonitor ParkEvent into a single "Event" construct. | |
5862 // 3. In park() and unpark() add: | |
5863 // assert (Thread::current() == AssociatedWith). | |
5864 // 4. add spurious wakeup injection on a -XX:EarlyParkReturn=N switch. | |
5865 // 1-out-of-N park() operations will return immediately. | |
5866 // | |
5867 // _Event transitions in park() | |
5868 // -1 => -1 : illegal | |
5869 // 1 => 0 : pass - return immediately | |
5870 // 0 => -1 : block | |
5871 // | |
5872 // _Event serves as a restricted-range semaphore. | |
5873 // | |
5874 // Another possible encoding of _Event would be with | |
5875 // explicit "PARKED" == 01b and "SIGNALED" == 10b bits. | |
5876 // | |
5877 // TODO-FIXME: add DTRACE probes for: | |
5878 // 1. Tx parks | |
5879 // 2. Ty unparks Tx | |
5880 // 3. Tx resumes from park | |
5881 | |
5882 | |
5883 // value determined through experimentation | |
5884 #define ROUNDINGFIX 11 | |
5885 | |
5886 // utility to compute the abstime argument to timedwait. | |
5887 // TODO-FIXME: switch from compute_abstime() to unpackTime(). | |
5888 | |
5889 static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) { | |
5890 // millis is the relative timeout time | |
5891 // abstime will be the absolute timeout time | |
5892 if (millis < 0) millis = 0; | |
5893 struct timeval now; | |
5894 int status = gettimeofday(&now, NULL); | |
5895 assert(status == 0, "gettimeofday"); | |
5896 jlong seconds = millis / 1000; | |
5897 jlong max_wait_period; | |
5898 | |
5899 if (UseLWPSynchronization) { | |
5900 // forward port of fix for 4275818 (not sleeping long enough) | |
5901 // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where | |
5902 // _lwp_cond_timedwait() used a round_down algorithm rather | |
5903 // than a round_up. For millis less than our roundfactor | |
5904 // it rounded down to 0 which doesn't meet the spec. | |
5905 // For millis > roundfactor we may return a bit sooner, but | |
5906 // since we can not accurately identify the patch level and | |
5907 // this has already been fixed in Solaris 9 and 8 we will | |
5908 // leave it alone rather than always rounding down. | |
5909 | |
5910 if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX; | |
5911 // It appears that when we go directly through Solaris _lwp_cond_timedwait() | |
5912 // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6 | |
5913 max_wait_period = 21000000; | |
5914 } else { | |
5915 max_wait_period = 50000000; | |
5916 } | |
5917 millis %= 1000; | |
5918 if (seconds > max_wait_period) { // see man cond_timedwait(3T) | |
5919 seconds = max_wait_period; | |
5920 } | |
5921 abstime->tv_sec = now.tv_sec + seconds; | |
5922 long usec = now.tv_usec + millis * 1000; | |
5923 if (usec >= 1000000) { | |
5924 abstime->tv_sec += 1; | |
5925 usec -= 1000000; | |
5926 } | |
5927 abstime->tv_nsec = usec * 1000; | |
5928 return abstime; | |
5929 } | |
5930 | |
5931 // Test-and-clear _Event, always leaves _Event set to 0, returns immediately. | |
5932 // Conceptually TryPark() should be equivalent to park(0). | |
5933 | |
5934 int os::PlatformEvent::TryPark() { | |
5935 for (;;) { | |
5936 const int v = _Event ; | |
5937 guarantee ((v == 0) || (v == 1), "invariant") ; | |
5938 if (Atomic::cmpxchg (0, &_Event, v) == v) return v ; | |
5939 } | |
5940 } | |
5941 | |
5942 void os::PlatformEvent::park() { // AKA: down() | |
5943 // Invariant: Only the thread associated with the Event/PlatformEvent | |
5944 // may call park(). | |
5945 int v ; | |
5946 for (;;) { | |
5947 v = _Event ; | |
5948 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
5949 } | |
5950 guarantee (v >= 0, "invariant") ; | |
5951 if (v == 0) { | |
5952 // Do this the hard way by blocking ... | |
5953 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
5954 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
5955 // Only for SPARC >= V8PlusA | |
5956 #if defined(__sparc) && defined(COMPILER2) | |
5957 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
5958 #endif | |
5959 int status = os::Solaris::mutex_lock(_mutex); | |
5960 assert_status(status == 0, status, "mutex_lock"); | |
5961 guarantee (_nParked == 0, "invariant") ; | |
5962 ++ _nParked ; | |
5963 while (_Event < 0) { | |
5964 // for some reason, under 2.7 lwp_cond_wait() may return ETIME ... | |
5965 // Treat this the same as if the wait was interrupted | |
5966 // With usr/lib/lwp going to kernel, always handle ETIME | |
5967 status = os::Solaris::cond_wait(_cond, _mutex); | |
5968 if (status == ETIME) status = EINTR ; | |
5969 assert_status(status == 0 || status == EINTR, status, "cond_wait"); | |
5970 } | |
5971 -- _nParked ; | |
5972 _Event = 0 ; | |
5973 status = os::Solaris::mutex_unlock(_mutex); | |
5974 assert_status(status == 0, status, "mutex_unlock"); | |
7629
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5975 // Paranoia to ensure our locked and lock-free paths interact |
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|
5976 // correctly with each other. |
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|
5977 OrderAccess::fence(); |
0 | 5978 } |
5979 } | |
5980 | |
5981 int os::PlatformEvent::park(jlong millis) { | |
5982 guarantee (_nParked == 0, "invariant") ; | |
5983 int v ; | |
5984 for (;;) { | |
5985 v = _Event ; | |
5986 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
5987 } | |
5988 guarantee (v >= 0, "invariant") ; | |
5989 if (v != 0) return OS_OK ; | |
5990 | |
5991 int ret = OS_TIMEOUT; | |
5992 timestruc_t abst; | |
5993 compute_abstime (&abst, millis); | |
5994 | |
5995 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
5996 // For Solaris SPARC set fprs.FEF=0 prior to parking. | |
5997 // Only for SPARC >= V8PlusA | |
5998 #if defined(__sparc) && defined(COMPILER2) | |
5999 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6000 #endif | |
6001 int status = os::Solaris::mutex_lock(_mutex); | |
6002 assert_status(status == 0, status, "mutex_lock"); | |
6003 guarantee (_nParked == 0, "invariant") ; | |
6004 ++ _nParked ; | |
6005 while (_Event < 0) { | |
6006 int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst); | |
6007 assert_status(status == 0 || status == EINTR || | |
6008 status == ETIME || status == ETIMEDOUT, | |
6009 status, "cond_timedwait"); | |
6010 if (!FilterSpuriousWakeups) break ; // previous semantics | |
6011 if (status == ETIME || status == ETIMEDOUT) break ; | |
6012 // We consume and ignore EINTR and spurious wakeups. | |
6013 } | |
6014 -- _nParked ; | |
6015 if (_Event >= 0) ret = OS_OK ; | |
6016 _Event = 0 ; | |
6017 status = os::Solaris::mutex_unlock(_mutex); | |
6018 assert_status(status == 0, status, "mutex_unlock"); | |
7629
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6019 // Paranoia to ensure our locked and lock-free paths interact |
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|
6020 // correctly with each other. |
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|
6021 OrderAccess::fence(); |
0 | 6022 return ret; |
6023 } | |
6024 | |
6025 void os::PlatformEvent::unpark() { | |
7629
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|
6026 // Transitions for _Event: |
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|
6027 // 0 :=> 1 |
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|
6028 // 1 :=> 1 |
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|
6029 // -1 :=> either 0 or 1; must signal target thread |
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6030 // That is, we can safely transition _Event from -1 to either |
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6031 // 0 or 1. Forcing 1 is slightly more efficient for back-to-back |
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|
6032 // unpark() calls. |
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6033 // See also: "Semaphores in Plan 9" by Mullender & Cox |
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|
6034 // |
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6035 // Note: Forcing a transition from "-1" to "1" on an unpark() means |
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6036 // that it will take two back-to-back park() calls for the owning |
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6037 // thread to block. This has the benefit of forcing a spurious return |
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6038 // from the first park() call after an unpark() call which will help |
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|
6039 // shake out uses of park() and unpark() without condition variables. |
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|
6040 |
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|
6041 if (Atomic::xchg(1, &_Event) >= 0) return; |
0 | 6042 |
6043 // If the thread associated with the event was parked, wake it. | |
7629
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6044 // Wait for the thread assoc with the PlatformEvent to vacate. |
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|
6045 int status = os::Solaris::mutex_lock(_mutex); |
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|
6046 assert_status(status == 0, status, "mutex_lock"); |
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6047 int AnyWaiters = _nParked; |
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|
6048 status = os::Solaris::mutex_unlock(_mutex); |
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|
6049 assert_status(status == 0, status, "mutex_unlock"); |
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|
6050 guarantee(AnyWaiters == 0 || AnyWaiters == 1, "invariant"); |
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|
6051 if (AnyWaiters != 0) { |
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|
6052 // We intentional signal *after* dropping the lock |
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6053 // to avoid a common class of futile wakeups. |
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|
6054 status = os::Solaris::cond_signal(_cond); |
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|
6055 assert_status(status == 0, status, "cond_signal"); |
0 | 6056 } |
6057 } | |
6058 | |
6059 // JSR166 | |
6060 // ------------------------------------------------------- | |
6061 | |
6062 /* | |
6063 * The solaris and linux implementations of park/unpark are fairly | |
6064 * conservative for now, but can be improved. They currently use a | |
6065 * mutex/condvar pair, plus _counter. | |
6066 * Park decrements _counter if > 0, else does a condvar wait. Unpark | |
6067 * sets count to 1 and signals condvar. Only one thread ever waits | |
6068 * on the condvar. Contention seen when trying to park implies that someone | |
6069 * is unparking you, so don't wait. And spurious returns are fine, so there | |
6070 * is no need to track notifications. | |
6071 */ | |
6072 | |
6073 #define MAX_SECS 100000000 | |
6074 /* | |
6075 * This code is common to linux and solaris and will be moved to a | |
6076 * common place in dolphin. | |
6077 * | |
6078 * The passed in time value is either a relative time in nanoseconds | |
6079 * or an absolute time in milliseconds. Either way it has to be unpacked | |
6080 * into suitable seconds and nanoseconds components and stored in the | |
6081 * given timespec structure. | |
6082 * Given time is a 64-bit value and the time_t used in the timespec is only | |
6083 * a signed-32-bit value (except on 64-bit Linux) we have to watch for | |
6084 * overflow if times way in the future are given. Further on Solaris versions | |
6085 * prior to 10 there is a restriction (see cond_timedwait) that the specified | |
6086 * number of seconds, in abstime, is less than current_time + 100,000,000. | |
6087 * As it will be 28 years before "now + 100000000" will overflow we can | |
6088 * ignore overflow and just impose a hard-limit on seconds using the value | |
6089 * of "now + 100,000,000". This places a limit on the timeout of about 3.17 | |
6090 * years from "now". | |
6091 */ | |
6092 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { | |
6093 assert (time > 0, "convertTime"); | |
6094 | |
6095 struct timeval now; | |
6096 int status = gettimeofday(&now, NULL); | |
6097 assert(status == 0, "gettimeofday"); | |
6098 | |
6099 time_t max_secs = now.tv_sec + MAX_SECS; | |
6100 | |
6101 if (isAbsolute) { | |
6102 jlong secs = time / 1000; | |
6103 if (secs > max_secs) { | |
6104 absTime->tv_sec = max_secs; | |
6105 } | |
6106 else { | |
6107 absTime->tv_sec = secs; | |
6108 } | |
6109 absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; | |
6110 } | |
6111 else { | |
6112 jlong secs = time / NANOSECS_PER_SEC; | |
6113 if (secs >= MAX_SECS) { | |
6114 absTime->tv_sec = max_secs; | |
6115 absTime->tv_nsec = 0; | |
6116 } | |
6117 else { | |
6118 absTime->tv_sec = now.tv_sec + secs; | |
6119 absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; | |
6120 if (absTime->tv_nsec >= NANOSECS_PER_SEC) { | |
6121 absTime->tv_nsec -= NANOSECS_PER_SEC; | |
6122 ++absTime->tv_sec; // note: this must be <= max_secs | |
6123 } | |
6124 } | |
6125 } | |
6126 assert(absTime->tv_sec >= 0, "tv_sec < 0"); | |
6127 assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); | |
6128 assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); | |
6129 assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); | |
6130 } | |
6131 | |
6132 void Parker::park(bool isAbsolute, jlong time) { | |
7629
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
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7456
diff
changeset
|
6133 // Ideally we'd do something useful while spinning, such |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6134 // as calling unpackTime(). |
0 | 6135 |
6136 // Optional fast-path check: | |
6137 // Return immediately if a permit is available. | |
7629
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6138 // We depend on Atomic::xchg() having full barrier semantics |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6139 // since we are doing a lock-free update to _counter. |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6140 if (Atomic::xchg(0, &_counter) > 0) return; |
0 | 6141 |
6142 // Optional fast-exit: Check interrupt before trying to wait | |
6143 Thread* thread = Thread::current(); | |
6144 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
6145 JavaThread *jt = (JavaThread *)thread; | |
6146 if (Thread::is_interrupted(thread, false)) { | |
6147 return; | |
6148 } | |
6149 | |
6150 // First, demultiplex/decode time arguments | |
6151 timespec absTime; | |
1865
1c352af0135d
6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
acorn
parents:
1681
diff
changeset
|
6152 if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all |
0 | 6153 return; |
6154 } | |
6155 if (time > 0) { | |
6156 // Warning: this code might be exposed to the old Solaris time | |
6157 // round-down bugs. Grep "roundingFix" for details. | |
6158 unpackTime(&absTime, isAbsolute, time); | |
6159 } | |
6160 | |
6161 // Enter safepoint region | |
6162 // Beware of deadlocks such as 6317397. | |
6163 // The per-thread Parker:: _mutex is a classic leaf-lock. | |
6164 // In particular a thread must never block on the Threads_lock while | |
6165 // holding the Parker:: mutex. If safepoints are pending both the | |
6166 // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. | |
6167 ThreadBlockInVM tbivm(jt); | |
6168 | |
6169 // Don't wait if cannot get lock since interference arises from | |
6170 // unblocking. Also. check interrupt before trying wait | |
6171 if (Thread::is_interrupted(thread, false) || | |
6172 os::Solaris::mutex_trylock(_mutex) != 0) { | |
6173 return; | |
6174 } | |
6175 | |
6176 int status ; | |
6177 | |
6178 if (_counter > 0) { // no wait needed | |
6179 _counter = 0; | |
6180 status = os::Solaris::mutex_unlock(_mutex); | |
6181 assert (status == 0, "invariant") ; | |
7629
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|
6182 // Paranoia to ensure our locked and lock-free paths interact |
22ba8c8ce6a6
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7456
diff
changeset
|
6183 // correctly with each other and Java-level accesses. |
1117
95e9083cf4a7
6822370: ReentrantReadWriteLock: threads hung when there are no threads holding onto the lock (Netra x4450)
dholmes
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894
diff
changeset
|
6184 OrderAccess::fence(); |
0 | 6185 return; |
6186 } | |
6187 | |
6188 #ifdef ASSERT | |
6189 // Don't catch signals while blocked; let the running threads have the signals. | |
6190 // (This allows a debugger to break into the running thread.) | |
6191 sigset_t oldsigs; | |
6192 sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals(); | |
6193 thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); | |
6194 #endif | |
6195 | |
6196 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
6197 jt->set_suspend_equivalent(); | |
6198 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
6199 | |
6200 // Do this the hard way by blocking ... | |
6201 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6202 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
6203 // Only for SPARC >= V8PlusA | |
6204 #if defined(__sparc) && defined(COMPILER2) | |
6205 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6206 #endif | |
6207 | |
6208 if (time == 0) { | |
6209 status = os::Solaris::cond_wait (_cond, _mutex) ; | |
6210 } else { | |
6211 status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime); | |
6212 } | |
6213 // Note that an untimed cond_wait() can sometimes return ETIME on older | |
6214 // versions of the Solaris. | |
6215 assert_status(status == 0 || status == EINTR || | |
6216 status == ETIME || status == ETIMEDOUT, | |
6217 status, "cond_timedwait"); | |
6218 | |
6219 #ifdef ASSERT | |
6220 thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL); | |
6221 #endif | |
6222 _counter = 0 ; | |
6223 status = os::Solaris::mutex_unlock(_mutex); | |
6224 assert_status(status == 0, status, "mutex_unlock") ; | |
7629
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7456
diff
changeset
|
6225 // Paranoia to ensure our locked and lock-free paths interact |
22ba8c8ce6a6
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dcubed
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7456
diff
changeset
|
6226 // correctly with each other and Java-level accesses. |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6227 OrderAccess::fence(); |
0 | 6228 |
6229 // If externally suspended while waiting, re-suspend | |
6230 if (jt->handle_special_suspend_equivalent_condition()) { | |
6231 jt->java_suspend_self(); | |
6232 } | |
6233 } | |
6234 | |
6235 void Parker::unpark() { | |
6236 int s, status ; | |
6237 status = os::Solaris::mutex_lock (_mutex) ; | |
6238 assert (status == 0, "invariant") ; | |
6239 s = _counter; | |
6240 _counter = 1; | |
6241 status = os::Solaris::mutex_unlock (_mutex) ; | |
6242 assert (status == 0, "invariant") ; | |
6243 | |
6244 if (s < 1) { | |
6245 status = os::Solaris::cond_signal (_cond) ; | |
6246 assert (status == 0, "invariant") ; | |
6247 } | |
6248 } | |
6249 | |
6250 extern char** environ; | |
6251 | |
6252 // Run the specified command in a separate process. Return its exit value, | |
6253 // or -1 on failure (e.g. can't fork a new process). | |
6254 // Unlike system(), this function can be called from signal handler. It | |
6255 // doesn't block SIGINT et al. | |
6256 int os::fork_and_exec(char* cmd) { | |
6257 char * argv[4]; | |
6258 argv[0] = (char *)"sh"; | |
6259 argv[1] = (char *)"-c"; | |
6260 argv[2] = cmd; | |
6261 argv[3] = NULL; | |
6262 | |
6263 // fork is async-safe, fork1 is not so can't use in signal handler | |
6264 pid_t pid; | |
6265 Thread* t = ThreadLocalStorage::get_thread_slow(); | |
6266 if (t != NULL && t->is_inside_signal_handler()) { | |
6267 pid = fork(); | |
6268 } else { | |
6269 pid = fork1(); | |
6270 } | |
6271 | |
6272 if (pid < 0) { | |
6273 // fork failed | |
6274 warning("fork failed: %s", strerror(errno)); | |
6275 return -1; | |
6276 | |
6277 } else if (pid == 0) { | |
6278 // child process | |
6279 | |
6280 // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris | |
6281 execve("/usr/bin/sh", argv, environ); | |
6282 | |
6283 // execve failed | |
6284 _exit(-1); | |
6285 | |
6286 } else { | |
6287 // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't | |
6288 // care about the actual exit code, for now. | |
6289 | |
6290 int status; | |
6291 | |
6292 // Wait for the child process to exit. This returns immediately if | |
6293 // the child has already exited. */ | |
6294 while (waitpid(pid, &status, 0) < 0) { | |
6295 switch (errno) { | |
6296 case ECHILD: return 0; | |
6297 case EINTR: break; | |
6298 default: return -1; | |
6299 } | |
6300 } | |
6301 | |
6302 if (WIFEXITED(status)) { | |
6303 // The child exited normally; get its exit code. | |
6304 return WEXITSTATUS(status); | |
6305 } else if (WIFSIGNALED(status)) { | |
6306 // The child exited because of a signal | |
6307 // The best value to return is 0x80 + signal number, | |
6308 // because that is what all Unix shells do, and because | |
6309 // it allows callers to distinguish between process exit and | |
6310 // process death by signal. | |
6311 return 0x80 + WTERMSIG(status); | |
6312 } else { | |
6313 // Unknown exit code; pass it through | |
6314 return status; | |
6315 } | |
6316 } | |
6317 } | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6318 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6319 // is_headless_jre() |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6320 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6321 // Test for the existence of xawt/libmawt.so or libawt_xawt.so |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6322 // in order to report if we are running in a headless jre |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6323 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6324 // Since JDK8 xawt/libmawt.so was moved into the same directory |
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6325 // as libawt.so, and renamed libawt_xawt.so |
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6326 // |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6327 bool os::is_headless_jre() { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6328 struct stat statbuf; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6329 char buf[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6330 char libmawtpath[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6331 const char *xawtstr = "/xawt/libmawt.so"; |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6332 const char *new_xawtstr = "/libawt_xawt.so"; |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6333 char *p; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6334 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6335 // Get path to libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6336 os::jvm_path(buf, sizeof(buf)); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6337 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6338 // Get rid of libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6339 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6340 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6341 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6342 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6343 // Get rid of client or server |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6344 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6345 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6346 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6347 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6348 // check xawt/libmawt.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6349 strcpy(libmawtpath, buf); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6350 strcat(libmawtpath, xawtstr); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6351 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6352 |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6353 // check libawt_xawt.so |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6354 strcpy(libmawtpath, buf); |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6355 strcat(libmawtpath, new_xawtstr); |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6356 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6357 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6358 return true; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6359 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6360 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6361 size_t os::write(int fd, const void *buf, unsigned int nBytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6362 INTERRUPTIBLE_RETURN_INT(::write(fd, buf, nBytes), os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6363 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6364 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6365 int os::close(int fd) { |
10978
e95fc50106cf
7178026: os::close can restart ::close but that is not a restartable syscall
rdurbin
parents:
10969
diff
changeset
|
6366 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6367 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6368 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6369 int os::socket_close(int fd) { |
10978
e95fc50106cf
7178026: os::close can restart ::close but that is not a restartable syscall
rdurbin
parents:
10969
diff
changeset
|
6370 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6371 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6372 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6373 int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6374 INTERRUPTIBLE_RETURN_INT((int)::recv(fd, buf, nBytes, flags), os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6375 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6376 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6377 int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6378 INTERRUPTIBLE_RETURN_INT((int)::send(fd, buf, nBytes, flags), os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6379 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6380 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6381 int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6382 RESTARTABLE_RETURN_INT((int)::send(fd, buf, nBytes, flags)); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6383 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6384 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6385 // As both poll and select can be interrupted by signals, we have to be |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6386 // prepared to restart the system call after updating the timeout, unless |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6387 // a poll() is done with timeout == -1, in which case we repeat with this |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6388 // "wait forever" value. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6389 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6390 int os::timeout(int fd, long timeout) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6391 int res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6392 struct timeval t; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6393 julong prevtime, newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6394 static const char* aNull = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6395 struct pollfd pfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6396 pfd.fd = fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6397 pfd.events = POLLIN; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6398 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6399 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6400 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6401 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6402 for(;;) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6403 INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6404 if(res == OS_ERR && errno == EINTR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6405 if(timeout != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6406 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6407 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6408 timeout -= newtime - prevtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6409 if(timeout <= 0) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6410 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6411 prevtime = newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6412 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6413 } else return res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6414 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6415 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6416 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6417 int os::connect(int fd, struct sockaddr *him, socklen_t len) { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6418 int _result; |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6419 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,\ |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6420 os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6421 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6422 // Depending on when thread interruption is reset, _result could be |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6423 // one of two values when errno == EINTR |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6424 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6425 if (((_result == OS_INTRPT) || (_result == OS_ERR)) |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6426 && (errno == EINTR)) { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6427 /* restarting a connect() changes its errno semantics */ |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6428 INTERRUPTIBLE(::connect(fd, him, len), _result,\ |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6429 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6430 /* undo these changes */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6431 if (_result == OS_ERR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6432 if (errno == EALREADY) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6433 errno = EINPROGRESS; /* fall through */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6434 } else if (errno == EISCONN) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6435 errno = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6436 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6437 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6438 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6439 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6440 return _result; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6441 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6442 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6443 int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6444 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6445 return OS_ERR; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6446 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6447 INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, len),\ |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6448 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6449 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6450 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6451 int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6452 sockaddr* from, socklen_t* fromlen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6453 INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen),\ |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6454 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6455 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6456 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6457 int os::sendto(int fd, char* buf, size_t len, uint flags, |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6458 struct sockaddr* to, socklen_t tolen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6459 INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen),\ |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6460 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6461 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6462 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6463 int os::socket_available(int fd, jint *pbytes) { |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6464 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6465 return OS_OK; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6466 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6467 int ret; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6468 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6469 // note: ioctl can return 0 when successful, JVM_SocketAvailable |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6470 // is expected to return 0 on failure and 1 on success to the jdk. |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6471 return (ret == OS_ERR) ? 0 : 1; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6472 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6473 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6474 int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6475 INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),\ |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6476 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6477 } |
6200
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6478 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6479 // Get the default path to the core file |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6480 // Returns the length of the string |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6481 int os::get_core_path(char* buffer, size_t bufferSize) { |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6482 const char* p = get_current_directory(buffer, bufferSize); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6483 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6484 if (p == NULL) { |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6485 assert(p != NULL, "failed to get current directory"); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6486 return 0; |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6487 } |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6488 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6489 return strlen(buffer); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6490 } |
12110
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6491 |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6492 #ifndef PRODUCT |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6493 void TestReserveMemorySpecial_test() { |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6494 // No tests available for this platform |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6495 } |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6496 #endif |