Mercurial > hg > truffle
annotate src/os/solaris/vm/os_solaris.cpp @ 14705:7986af88b782
set MaxRAM value to the same used by C2
author | twisti |
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date | Thu, 20 Mar 2014 12:35:15 -0700 |
parents | d8041d695d19 |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
14328 | 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 JavaThread* os::Solaris::setup_interruptible() { | |
336 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
337 setup_interruptible(thread); | |
338 return thread; | |
339 } | |
340 | |
341 void os::Solaris::try_enable_extended_io() { | |
342 typedef int (*enable_extended_FILE_stdio_t)(int, int); | |
343 | |
344 if (!UseExtendedFileIO) { | |
345 return; | |
346 } | |
347 | |
348 enable_extended_FILE_stdio_t enabler = | |
349 (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT, | |
350 "enable_extended_FILE_stdio"); | |
351 if (enabler) { | |
352 enabler(-1, -1); | |
353 } | |
354 } | |
355 | |
356 | |
357 #ifdef ASSERT | |
358 | |
359 JavaThread* os::Solaris::setup_interruptible_native() { | |
360 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
361 JavaThreadState thread_state = thread->thread_state(); | |
362 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
363 return thread; | |
364 } | |
365 | |
366 void os::Solaris::cleanup_interruptible_native(JavaThread* thread) { | |
367 JavaThreadState thread_state = thread->thread_state(); | |
368 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
369 } | |
370 #endif | |
371 | |
372 // cleanup_interruptible reverses the effects of setup_interruptible | |
373 // setup_interruptible_already_blocked() does not need any cleanup. | |
374 | |
375 void os::Solaris::cleanup_interruptible(JavaThread* thread) { | |
376 OSThread* osthread = thread->osthread(); | |
377 | |
378 ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state()); | |
379 } | |
380 | |
381 // I/O interruption related counters called in _INTERRUPTIBLE | |
382 | |
383 void os::Solaris::bump_interrupted_before_count() { | |
384 RuntimeService::record_interrupted_before_count(); | |
385 } | |
386 | |
387 void os::Solaris::bump_interrupted_during_count() { | |
388 RuntimeService::record_interrupted_during_count(); | |
389 } | |
390 | |
391 static int _processors_online = 0; | |
392 | |
393 jint os::Solaris::_os_thread_limit = 0; | |
394 volatile jint os::Solaris::_os_thread_count = 0; | |
395 | |
396 julong os::available_memory() { | |
397 return Solaris::available_memory(); | |
398 } | |
399 | |
400 julong os::Solaris::available_memory() { | |
401 return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size(); | |
402 } | |
403 | |
404 julong os::Solaris::_physical_memory = 0; | |
405 | |
406 julong os::physical_memory() { | |
407 return Solaris::physical_memory(); | |
408 } | |
409 | |
410 static hrtime_t first_hrtime = 0; | |
411 static const hrtime_t hrtime_hz = 1000*1000*1000; | |
412 const int LOCK_BUSY = 1; | |
413 const int LOCK_FREE = 0; | |
414 const int LOCK_INVALID = -1; | |
415 static volatile hrtime_t max_hrtime = 0; | |
416 static volatile int max_hrtime_lock = LOCK_FREE; // Update counter with LSB as lock-in-progress | |
417 | |
418 | |
419 void os::Solaris::initialize_system_info() { | |
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420 set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); |
0 | 421 _processors_online = sysconf (_SC_NPROCESSORS_ONLN); |
422 _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); | |
423 } | |
424 | |
425 int os::active_processor_count() { | |
426 int online_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
427 pid_t pid = getpid(); | |
428 psetid_t pset = PS_NONE; | |
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429 // Are we running in a processor set or is there any processor set around? |
0 | 430 if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) { |
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431 uint_t pset_cpus; |
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432 // Query the number of cpus available to us. |
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433 if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) { |
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434 assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check"); |
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435 _processors_online = pset_cpus; |
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436 return pset_cpus; |
0 | 437 } |
438 } | |
439 // Otherwise return number of online cpus | |
440 return online_cpus; | |
441 } | |
442 | |
443 static bool find_processors_in_pset(psetid_t pset, | |
444 processorid_t** id_array, | |
445 uint_t* id_length) { | |
446 bool result = false; | |
447 // Find the number of processors in the processor set. | |
448 if (pset_info(pset, NULL, id_length, NULL) == 0) { | |
449 // Make up an array to hold their ids. | |
6197 | 450 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 451 // Fill in the array with their processor ids. |
452 if (pset_info(pset, NULL, id_length, *id_array) == 0) { | |
453 result = true; | |
454 } | |
455 } | |
456 return result; | |
457 } | |
458 | |
459 // Callers of find_processors_online() must tolerate imprecise results -- | |
460 // the system configuration can change asynchronously because of DR | |
461 // or explicit psradm operations. | |
462 // | |
463 // We also need to take care that the loop (below) terminates as the | |
464 // number of processors online can change between the _SC_NPROCESSORS_ONLN | |
465 // request and the loop that builds the list of processor ids. Unfortunately | |
466 // there's no reliable way to determine the maximum valid processor id, | |
467 // so we use a manifest constant, MAX_PROCESSOR_ID, instead. See p_online | |
468 // man pages, which claim the processor id set is "sparse, but | |
469 // not too sparse". MAX_PROCESSOR_ID is used to ensure that we eventually | |
470 // exit the loop. | |
471 // | |
472 // In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's | |
473 // not available on S8.0. | |
474 | |
475 static bool find_processors_online(processorid_t** id_array, | |
476 uint* id_length) { | |
477 const processorid_t MAX_PROCESSOR_ID = 100000 ; | |
478 // Find the number of processors online. | |
479 *id_length = sysconf(_SC_NPROCESSORS_ONLN); | |
480 // Make up an array to hold their ids. | |
6197 | 481 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 482 // Processors need not be numbered consecutively. |
483 long found = 0; | |
484 processorid_t next = 0; | |
485 while (found < *id_length && next < MAX_PROCESSOR_ID) { | |
486 processor_info_t info; | |
487 if (processor_info(next, &info) == 0) { | |
488 // NB, PI_NOINTR processors are effectively online ... | |
489 if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) { | |
490 (*id_array)[found] = next; | |
491 found += 1; | |
492 } | |
493 } | |
494 next += 1; | |
495 } | |
496 if (found < *id_length) { | |
497 // The loop above didn't identify the expected number of processors. | |
498 // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN) | |
499 // and re-running the loop, above, but there's no guarantee of progress | |
500 // if the system configuration is in flux. Instead, we just return what | |
501 // we've got. Note that in the worst case find_processors_online() could | |
502 // return an empty set. (As a fall-back in the case of the empty set we | |
503 // could just return the ID of the current processor). | |
504 *id_length = found ; | |
505 } | |
506 | |
507 return true; | |
508 } | |
509 | |
510 static bool assign_distribution(processorid_t* id_array, | |
511 uint id_length, | |
512 uint* distribution, | |
513 uint distribution_length) { | |
514 // We assume we can assign processorid_t's to uint's. | |
515 assert(sizeof(processorid_t) == sizeof(uint), | |
516 "can't convert processorid_t to uint"); | |
517 // Quick check to see if we won't succeed. | |
518 if (id_length < distribution_length) { | |
519 return false; | |
520 } | |
521 // Assign processor ids to the distribution. | |
522 // Try to shuffle processors to distribute work across boards, | |
523 // assuming 4 processors per board. | |
524 const uint processors_per_board = ProcessDistributionStride; | |
525 // Find the maximum processor id. | |
526 processorid_t max_id = 0; | |
527 for (uint m = 0; m < id_length; m += 1) { | |
528 max_id = MAX2(max_id, id_array[m]); | |
529 } | |
530 // The next id, to limit loops. | |
531 const processorid_t limit_id = max_id + 1; | |
532 // Make up markers for available processors. | |
6197 | 533 bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id, mtInternal); |
0 | 534 for (uint c = 0; c < limit_id; c += 1) { |
535 available_id[c] = false; | |
536 } | |
537 for (uint a = 0; a < id_length; a += 1) { | |
538 available_id[id_array[a]] = true; | |
539 } | |
540 // Step by "boards", then by "slot", copying to "assigned". | |
541 // NEEDS_CLEANUP: The assignment of processors should be stateful, | |
542 // remembering which processors have been assigned by | |
543 // previous calls, etc., so as to distribute several | |
544 // independent calls of this method. What we'd like is | |
545 // It would be nice to have an API that let us ask | |
546 // how many processes are bound to a processor, | |
547 // but we don't have that, either. | |
548 // In the short term, "board" is static so that | |
549 // subsequent distributions don't all start at board 0. | |
550 static uint board = 0; | |
551 uint assigned = 0; | |
552 // Until we've found enough processors .... | |
553 while (assigned < distribution_length) { | |
554 // ... find the next available processor in the board. | |
555 for (uint slot = 0; slot < processors_per_board; slot += 1) { | |
556 uint try_id = board * processors_per_board + slot; | |
557 if ((try_id < limit_id) && (available_id[try_id] == true)) { | |
558 distribution[assigned] = try_id; | |
559 available_id[try_id] = false; | |
560 assigned += 1; | |
561 break; | |
562 } | |
563 } | |
564 board += 1; | |
565 if (board * processors_per_board + 0 >= limit_id) { | |
566 board = 0; | |
567 } | |
568 } | |
569 if (available_id != NULL) { | |
6197 | 570 FREE_C_HEAP_ARRAY(bool, available_id, mtInternal); |
0 | 571 } |
572 return true; | |
573 } | |
574 | |
4006 | 575 void os::set_native_thread_name(const char *name) { |
576 // Not yet implemented. | |
577 return; | |
578 } | |
579 | |
0 | 580 bool os::distribute_processes(uint length, uint* distribution) { |
581 bool result = false; | |
582 // Find the processor id's of all the available CPUs. | |
583 processorid_t* id_array = NULL; | |
584 uint id_length = 0; | |
585 // There are some races between querying information and using it, | |
586 // since processor sets can change dynamically. | |
587 psetid_t pset = PS_NONE; | |
588 // Are we running in a processor set? | |
589 if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) { | |
590 result = find_processors_in_pset(pset, &id_array, &id_length); | |
591 } else { | |
592 result = find_processors_online(&id_array, &id_length); | |
593 } | |
594 if (result == true) { | |
595 if (id_length >= length) { | |
596 result = assign_distribution(id_array, id_length, distribution, length); | |
597 } else { | |
598 result = false; | |
599 } | |
600 } | |
601 if (id_array != NULL) { | |
6197 | 602 FREE_C_HEAP_ARRAY(processorid_t, id_array, mtInternal); |
0 | 603 } |
604 return result; | |
605 } | |
606 | |
607 bool os::bind_to_processor(uint processor_id) { | |
608 // We assume that a processorid_t can be stored in a uint. | |
609 assert(sizeof(uint) == sizeof(processorid_t), | |
610 "can't convert uint to processorid_t"); | |
611 int bind_result = | |
612 processor_bind(P_LWPID, // bind LWP. | |
613 P_MYID, // bind current LWP. | |
614 (processorid_t) processor_id, // id. | |
615 NULL); // don't return old binding. | |
616 return (bind_result == 0); | |
617 } | |
618 | |
619 bool os::getenv(const char* name, char* buffer, int len) { | |
620 char* val = ::getenv( name ); | |
621 if ( val == NULL | |
622 || strlen(val) + 1 > len ) { | |
623 if (len > 0) buffer[0] = 0; // return a null string | |
624 return false; | |
625 } | |
626 strcpy( buffer, val ); | |
627 return true; | |
628 } | |
629 | |
630 | |
631 // Return true if user is running as root. | |
632 | |
633 bool os::have_special_privileges() { | |
634 static bool init = false; | |
635 static bool privileges = false; | |
636 if (!init) { | |
637 privileges = (getuid() != geteuid()) || (getgid() != getegid()); | |
638 init = true; | |
639 } | |
640 return privileges; | |
641 } | |
642 | |
643 | |
644 void os::init_system_properties_values() { | |
645 char arch[12]; | |
646 sysinfo(SI_ARCHITECTURE, arch, sizeof(arch)); | |
647 | |
648 // The next steps are taken in the product version: | |
649 // | |
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650 // Obtain the JAVA_HOME value from the location of libjvm.so. |
0 | 651 // This library should be located at: |
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652 // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm.so. |
0 | 653 // |
654 // If "/jre/lib/" appears at the right place in the path, then we | |
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655 // assume libjvm.so is installed in a JDK and we use this path. |
0 | 656 // |
657 // Otherwise exit with message: "Could not create the Java virtual machine." | |
658 // | |
659 // The following extra steps are taken in the debugging version: | |
660 // | |
661 // If "/jre/lib/" does NOT appear at the right place in the path | |
662 // instead of exit check for $JAVA_HOME environment variable. | |
663 // | |
664 // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, | |
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665 // then we append a fake suffix "hotspot/libjvm.so" to this path so |
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666 // it looks like libjvm.so is installed there |
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667 // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm.so. |
0 | 668 // |
669 // Otherwise exit. | |
670 // | |
671 // Important note: if the location of libjvm.so changes this | |
672 // code needs to be changed accordingly. | |
673 | |
674 // The next few definitions allow the code to be verbatim: | |
6197 | 675 #define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n), mtInternal) |
676 #define free(p) FREE_C_HEAP_ARRAY(char, p, mtInternal) | |
0 | 677 #define getenv(n) ::getenv(n) |
678 | |
679 #define EXTENSIONS_DIR "/lib/ext" | |
680 #define ENDORSED_DIR "/lib/endorsed" | |
681 #define COMMON_DIR "/usr/jdk/packages" | |
682 | |
683 { | |
684 /* sysclasspath, java_home, dll_dir */ | |
685 { | |
686 char *home_path; | |
687 char *dll_path; | |
688 char *pslash; | |
689 char buf[MAXPATHLEN]; | |
690 os::jvm_path(buf, sizeof(buf)); | |
691 | |
692 // Found the full path to libjvm.so. | |
693 // Now cut the path to <java_home>/jre if we can. | |
694 *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ | |
695 pslash = strrchr(buf, '/'); | |
696 if (pslash != NULL) | |
697 *pslash = '\0'; /* get rid of /{client|server|hotspot} */ | |
698 dll_path = malloc(strlen(buf) + 1); | |
699 if (dll_path == NULL) | |
700 return; | |
701 strcpy(dll_path, buf); | |
702 Arguments::set_dll_dir(dll_path); | |
703 | |
704 if (pslash != NULL) { | |
705 pslash = strrchr(buf, '/'); | |
706 if (pslash != NULL) { | |
707 *pslash = '\0'; /* get rid of /<arch> */ | |
708 pslash = strrchr(buf, '/'); | |
709 if (pslash != NULL) | |
710 *pslash = '\0'; /* get rid of /lib */ | |
711 } | |
712 } | |
713 | |
714 home_path = malloc(strlen(buf) + 1); | |
715 if (home_path == NULL) | |
716 return; | |
717 strcpy(home_path, buf); | |
718 Arguments::set_java_home(home_path); | |
719 | |
720 if (!set_boot_path('/', ':')) | |
721 return; | |
722 } | |
723 | |
724 /* | |
725 * Where to look for native libraries | |
726 */ | |
727 { | |
728 // Use dlinfo() to determine the correct java.library.path. | |
729 // | |
730 // If we're launched by the Java launcher, and the user | |
731 // does not set java.library.path explicitly on the commandline, | |
732 // the Java launcher sets LD_LIBRARY_PATH for us and unsets | |
733 // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64. In this case | |
734 // dlinfo returns LD_LIBRARY_PATH + crle settings (including | |
735 // /usr/lib), which is exactly what we want. | |
736 // | |
737 // If the user does set java.library.path, it completely | |
738 // overwrites this setting, and always has. | |
739 // | |
740 // If we're not launched by the Java launcher, we may | |
741 // get here with any/all of the LD_LIBRARY_PATH[_32|64] | |
742 // settings. Again, dlinfo does exactly what we want. | |
743 | |
744 Dl_serinfo _info, *info = &_info; | |
745 Dl_serpath *path; | |
746 char* library_path; | |
747 char *common_path; | |
748 int i; | |
749 | |
750 // determine search path count and required buffer size | |
751 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) { | |
752 vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror()); | |
753 } | |
754 | |
755 // allocate new buffer and initialize | |
756 info = (Dl_serinfo*)malloc(_info.dls_size); | |
757 if (info == NULL) { | |
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758 vm_exit_out_of_memory(_info.dls_size, OOM_MALLOC_ERROR, |
0 | 759 "init_system_properties_values info"); |
760 } | |
761 info->dls_size = _info.dls_size; | |
762 info->dls_cnt = _info.dls_cnt; | |
763 | |
764 // obtain search path information | |
765 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) { | |
766 free(info); | |
767 vm_exit_during_initialization("dlinfo SERINFO request", dlerror()); | |
768 } | |
769 | |
770 path = &info->dls_serpath[0]; | |
771 | |
772 // Note: Due to a legacy implementation, most of the library path | |
773 // is set in the launcher. This was to accomodate linking restrictions | |
774 // on legacy Solaris implementations (which are no longer supported). | |
775 // Eventually, all the library path setting will be done here. | |
776 // | |
777 // However, to prevent the proliferation of improperly built native | |
778 // libraries, the new path component /usr/jdk/packages is added here. | |
779 | |
780 // Determine the actual CPU architecture. | |
781 char cpu_arch[12]; | |
782 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); | |
783 #ifdef _LP64 | |
784 // If we are a 64-bit vm, perform the following translations: | |
785 // sparc -> sparcv9 | |
786 // i386 -> amd64 | |
787 if (strcmp(cpu_arch, "sparc") == 0) | |
788 strcat(cpu_arch, "v9"); | |
789 else if (strcmp(cpu_arch, "i386") == 0) | |
790 strcpy(cpu_arch, "amd64"); | |
791 #endif | |
792 | |
793 // Construct the invariant part of ld_library_path. Note that the | |
794 // space for the colon and the trailing null are provided by the | |
795 // nulls included by the sizeof operator. | |
796 size_t bufsize = sizeof(COMMON_DIR) + sizeof("/lib/") + strlen(cpu_arch); | |
797 common_path = malloc(bufsize); | |
798 if (common_path == NULL) { | |
799 free(info); | |
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800 vm_exit_out_of_memory(bufsize, OOM_MALLOC_ERROR, |
0 | 801 "init_system_properties_values common_path"); |
802 } | |
803 sprintf(common_path, COMMON_DIR "/lib/%s", cpu_arch); | |
804 | |
805 // struct size is more than sufficient for the path components obtained | |
806 // through the dlinfo() call, so only add additional space for the path | |
807 // components explicitly added here. | |
808 bufsize = info->dls_size + strlen(common_path); | |
809 library_path = malloc(bufsize); | |
810 if (library_path == NULL) { | |
811 free(info); | |
812 free(common_path); | |
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813 vm_exit_out_of_memory(bufsize, OOM_MALLOC_ERROR, |
0 | 814 "init_system_properties_values library_path"); |
815 } | |
816 library_path[0] = '\0'; | |
817 | |
818 // Construct the desired Java library path from the linker's library | |
819 // search path. | |
820 // | |
821 // For compatibility, it is optimal that we insert the additional path | |
822 // components specific to the Java VM after those components specified | |
823 // in LD_LIBRARY_PATH (if any) but before those added by the ld.so | |
824 // infrastructure. | |
825 if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it | |
826 strcpy(library_path, common_path); | |
827 } else { | |
828 int inserted = 0; | |
829 for (i = 0; i < info->dls_cnt; i++, path++) { | |
830 uint_t flags = path->dls_flags & LA_SER_MASK; | |
831 if (((flags & LA_SER_LIBPATH) == 0) && !inserted) { | |
832 strcat(library_path, common_path); | |
833 strcat(library_path, os::path_separator()); | |
834 inserted = 1; | |
835 } | |
836 strcat(library_path, path->dls_name); | |
837 strcat(library_path, os::path_separator()); | |
838 } | |
839 // eliminate trailing path separator | |
840 library_path[strlen(library_path)-1] = '\0'; | |
841 } | |
842 | |
843 // happens before argument parsing - can't use a trace flag | |
844 // tty->print_raw("init_system_properties_values: native lib path: "); | |
845 // tty->print_raw_cr(library_path); | |
846 | |
847 // callee copies into its own buffer | |
848 Arguments::set_library_path(library_path); | |
849 | |
850 free(common_path); | |
851 free(library_path); | |
852 free(info); | |
853 } | |
854 | |
855 /* | |
856 * Extensions directories. | |
857 * | |
858 * Note that the space for the colon and the trailing null are provided | |
859 * by the nulls included by the sizeof operator (so actually one byte more | |
860 * than necessary is allocated). | |
861 */ | |
862 { | |
863 char *buf = (char *) malloc(strlen(Arguments::get_java_home()) + | |
864 sizeof(EXTENSIONS_DIR) + sizeof(COMMON_DIR) + | |
865 sizeof(EXTENSIONS_DIR)); | |
866 sprintf(buf, "%s" EXTENSIONS_DIR ":" COMMON_DIR EXTENSIONS_DIR, | |
867 Arguments::get_java_home()); | |
868 Arguments::set_ext_dirs(buf); | |
869 } | |
870 | |
871 /* Endorsed standards default directory. */ | |
872 { | |
873 char * buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR)); | |
874 sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home()); | |
875 Arguments::set_endorsed_dirs(buf); | |
876 } | |
877 } | |
878 | |
879 #undef malloc | |
880 #undef free | |
881 #undef getenv | |
882 #undef EXTENSIONS_DIR | |
883 #undef ENDORSED_DIR | |
884 #undef COMMON_DIR | |
885 | |
886 } | |
887 | |
888 void os::breakpoint() { | |
889 BREAKPOINT; | |
890 } | |
891 | |
892 bool os::obsolete_option(const JavaVMOption *option) | |
893 { | |
894 if (!strncmp(option->optionString, "-Xt", 3)) { | |
895 return true; | |
896 } else if (!strncmp(option->optionString, "-Xtm", 4)) { | |
897 return true; | |
898 } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) { | |
899 return true; | |
900 } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) { | |
901 return true; | |
902 } | |
903 return false; | |
904 } | |
905 | |
906 bool os::Solaris::valid_stack_address(Thread* thread, address sp) { | |
907 address stackStart = (address)thread->stack_base(); | |
908 address stackEnd = (address)(stackStart - (address)thread->stack_size()); | |
909 if (sp < stackStart && sp >= stackEnd ) return true; | |
910 return false; | |
911 } | |
912 | |
913 extern "C" void breakpoint() { | |
914 // use debugger to set breakpoint here | |
915 } | |
916 | |
917 static thread_t main_thread; | |
918 | |
919 // Thread start routine for all new Java threads | |
920 extern "C" void* java_start(void* thread_addr) { | |
921 // Try to randomize the cache line index of hot stack frames. | |
922 // This helps when threads of the same stack traces evict each other's | |
923 // cache lines. The threads can be either from the same JVM instance, or | |
924 // from different JVM instances. The benefit is especially true for | |
925 // processors with hyperthreading technology. | |
926 static int counter = 0; | |
927 int pid = os::current_process_id(); | |
928 alloca(((pid ^ counter++) & 7) * 128); | |
929 | |
930 int prio; | |
931 Thread* thread = (Thread*)thread_addr; | |
932 OSThread* osthr = thread->osthread(); | |
933 | |
934 osthr->set_lwp_id( _lwp_self() ); // Store lwp in case we are bound | |
935 thread->_schedctl = (void *) schedctl_init () ; | |
936 | |
937 if (UseNUMA) { | |
938 int lgrp_id = os::numa_get_group_id(); | |
939 if (lgrp_id != -1) { | |
940 thread->set_lgrp_id(lgrp_id); | |
941 } | |
942 } | |
943 | |
944 // If the creator called set priority before we started, | |
4854
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945 // we need to call set_native_priority now that we have an lwp. |
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946 // We used to get the priority from thr_getprio (we called |
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947 // thr_setprio way back in create_thread) and pass it to |
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948 // set_native_priority, but Solaris scales the priority |
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949 // in java_to_os_priority, so when we read it back here, |
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950 // we pass trash to set_native_priority instead of what's |
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951 // in java_to_os_priority. So we save the native priority |
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952 // in the osThread and recall it here. |
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953 |
0 | 954 if ( osthr->thread_id() != -1 ) { |
955 if ( UseThreadPriorities ) { | |
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956 int prio = osthr->native_priority(); |
0 | 957 if (ThreadPriorityVerbose) { |
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958 tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " |
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959 INTPTR_FORMAT ", setting priority: %d\n", |
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960 osthr->thread_id(), osthr->lwp_id(), prio); |
0 | 961 } |
962 os::set_native_priority(thread, prio); | |
963 } | |
964 } else if (ThreadPriorityVerbose) { | |
965 warning("Can't set priority in _start routine, thread id hasn't been set\n"); | |
966 } | |
967 | |
968 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
969 | |
970 // initialize signal mask for this thread | |
971 os::Solaris::hotspot_sigmask(thread); | |
972 | |
973 thread->run(); | |
974 | |
975 // One less thread is executing | |
976 // When the VMThread gets here, the main thread may have already exited | |
977 // which frees the CodeHeap containing the Atomic::dec code | |
978 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
979 Atomic::dec(&os::Solaris::_os_thread_count); | |
980 } | |
981 | |
982 if (UseDetachedThreads) { | |
983 thr_exit(NULL); | |
984 ShouldNotReachHere(); | |
985 } | |
986 return NULL; | |
987 } | |
988 | |
989 static OSThread* create_os_thread(Thread* thread, thread_t thread_id) { | |
990 // Allocate the OSThread object | |
991 OSThread* osthread = new OSThread(NULL, NULL); | |
992 if (osthread == NULL) return NULL; | |
993 | |
994 // Store info on the Solaris thread into the OSThread | |
995 osthread->set_thread_id(thread_id); | |
996 osthread->set_lwp_id(_lwp_self()); | |
997 thread->_schedctl = (void *) schedctl_init () ; | |
998 | |
999 if (UseNUMA) { | |
1000 int lgrp_id = os::numa_get_group_id(); | |
1001 if (lgrp_id != -1) { | |
1002 thread->set_lgrp_id(lgrp_id); | |
1003 } | |
1004 } | |
1005 | |
1006 if ( ThreadPriorityVerbose ) { | |
1007 tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n", | |
1008 osthread->thread_id(), osthread->lwp_id() ); | |
1009 } | |
1010 | |
1011 // Initial thread state is INITIALIZED, not SUSPENDED | |
1012 osthread->set_state(INITIALIZED); | |
1013 | |
1014 return osthread; | |
1015 } | |
1016 | |
1017 void os::Solaris::hotspot_sigmask(Thread* thread) { | |
1018 | |
1019 //Save caller's signal mask | |
1020 sigset_t sigmask; | |
1021 thr_sigsetmask(SIG_SETMASK, NULL, &sigmask); | |
1022 OSThread *osthread = thread->osthread(); | |
1023 osthread->set_caller_sigmask(sigmask); | |
1024 | |
1025 thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL); | |
1026 if (!ReduceSignalUsage) { | |
1027 if (thread->is_VM_thread()) { | |
1028 // Only the VM thread handles BREAK_SIGNAL ... | |
1029 thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL); | |
1030 } else { | |
1031 // ... all other threads block BREAK_SIGNAL | |
1032 assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked"); | |
1033 thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL); | |
1034 } | |
1035 } | |
1036 } | |
1037 | |
1038 bool os::create_attached_thread(JavaThread* thread) { | |
1039 #ifdef ASSERT | |
1040 thread->verify_not_published(); | |
1041 #endif | |
1042 OSThread* osthread = create_os_thread(thread, thr_self()); | |
1043 if (osthread == NULL) { | |
1044 return false; | |
1045 } | |
1046 | |
1047 // Initial thread state is RUNNABLE | |
1048 osthread->set_state(RUNNABLE); | |
1049 thread->set_osthread(osthread); | |
1050 | |
1051 // initialize signal mask for this thread | |
1052 // and save the caller's signal mask | |
1053 os::Solaris::hotspot_sigmask(thread); | |
1054 | |
1055 return true; | |
1056 } | |
1057 | |
1058 bool os::create_main_thread(JavaThread* thread) { | |
1059 #ifdef ASSERT | |
1060 thread->verify_not_published(); | |
1061 #endif | |
1062 if (_starting_thread == NULL) { | |
1063 _starting_thread = create_os_thread(thread, main_thread); | |
1064 if (_starting_thread == NULL) { | |
1065 return false; | |
1066 } | |
1067 } | |
1068 | |
1069 // The primodial thread is runnable from the start | |
1070 _starting_thread->set_state(RUNNABLE); | |
1071 | |
1072 thread->set_osthread(_starting_thread); | |
1073 | |
1074 // initialize signal mask for this thread | |
1075 // and save the caller's signal mask | |
1076 os::Solaris::hotspot_sigmask(thread); | |
1077 | |
1078 return true; | |
1079 } | |
1080 | |
1081 // _T2_libthread is true if we believe we are running with the newer | |
1082 // SunSoft lwp/libthread.so (2.8 patch, 2.9 default) | |
1083 bool os::Solaris::_T2_libthread = false; | |
1084 | |
1085 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
1086 // Allocate the OSThread object | |
1087 OSThread* osthread = new OSThread(NULL, NULL); | |
1088 if (osthread == NULL) { | |
1089 return false; | |
1090 } | |
1091 | |
1092 if ( ThreadPriorityVerbose ) { | |
1093 char *thrtyp; | |
1094 switch ( thr_type ) { | |
1095 case vm_thread: | |
1096 thrtyp = (char *)"vm"; | |
1097 break; | |
1098 case cgc_thread: | |
1099 thrtyp = (char *)"cgc"; | |
1100 break; | |
1101 case pgc_thread: | |
1102 thrtyp = (char *)"pgc"; | |
1103 break; | |
1104 case java_thread: | |
1105 thrtyp = (char *)"java"; | |
1106 break; | |
1107 case compiler_thread: | |
1108 thrtyp = (char *)"compiler"; | |
1109 break; | |
1110 case watcher_thread: | |
1111 thrtyp = (char *)"watcher"; | |
1112 break; | |
1113 default: | |
1114 thrtyp = (char *)"unknown"; | |
1115 break; | |
1116 } | |
1117 tty->print_cr("In create_thread, creating a %s thread\n", thrtyp); | |
1118 } | |
1119 | |
1120 // Calculate stack size if it's not specified by caller. | |
1121 if (stack_size == 0) { | |
1122 // The default stack size 1M (2M for LP64). | |
1123 stack_size = (BytesPerWord >> 2) * K * K; | |
1124 | |
1125 switch (thr_type) { | |
1126 case os::java_thread: | |
1127 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
1128 if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create(); | |
1129 break; | |
1130 case os::compiler_thread: | |
1131 if (CompilerThreadStackSize > 0) { | |
1132 stack_size = (size_t)(CompilerThreadStackSize * K); | |
1133 break; | |
1134 } // else fall through: | |
1135 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
1136 case os::vm_thread: | |
1137 case os::pgc_thread: | |
1138 case os::cgc_thread: | |
1139 case os::watcher_thread: | |
1140 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
1141 break; | |
1142 } | |
1143 } | |
1144 stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed); | |
1145 | |
1146 // Initial state is ALLOCATED but not INITIALIZED | |
1147 osthread->set_state(ALLOCATED); | |
1148 | |
1149 if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) { | |
1150 // We got lots of threads. Check if we still have some address space left. | |
1151 // Need to be at least 5Mb of unreserved address space. We do check by | |
1152 // trying to reserve some. | |
1153 const size_t VirtualMemoryBangSize = 20*K*K; | |
1154 char* mem = os::reserve_memory(VirtualMemoryBangSize); | |
1155 if (mem == NULL) { | |
1156 delete osthread; | |
1157 return false; | |
1158 } else { | |
1159 // Release the memory again | |
1160 os::release_memory(mem, VirtualMemoryBangSize); | |
1161 } | |
1162 } | |
1163 | |
1164 // Setup osthread because the child thread may need it. | |
1165 thread->set_osthread(osthread); | |
1166 | |
1167 // Create the Solaris thread | |
1168 // explicit THR_BOUND for T2_libthread case in case | |
1169 // that assumption is not accurate, but our alternate signal stack | |
1170 // handling is based on it which must have bound threads | |
1171 thread_t tid = 0; | |
1172 long flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED | |
1173 | ((UseBoundThreads || os::Solaris::T2_libthread() || | |
1174 (thr_type == vm_thread) || | |
1175 (thr_type == cgc_thread) || | |
1176 (thr_type == pgc_thread) || | |
1177 (thr_type == compiler_thread && BackgroundCompilation)) ? | |
1178 THR_BOUND : 0); | |
1179 int status; | |
1180 | |
1181 // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs. | |
1182 // | |
1183 // On multiprocessors systems, libthread sometimes under-provisions our | |
1184 // process with LWPs. On a 30-way systems, for instance, we could have | |
1185 // 50 user-level threads in ready state and only 2 or 3 LWPs assigned | |
1186 // to our process. This can result in under utilization of PEs. | |
1187 // I suspect the problem is related to libthread's LWP | |
1188 // pool management and to the kernel's SIGBLOCKING "last LWP parked" | |
1189 // upcall policy. | |
1190 // | |
1191 // The following code is palliative -- it attempts to ensure that our | |
1192 // process has sufficient LWPs to take advantage of multiple PEs. | |
1193 // Proper long-term cures include using user-level threads bound to LWPs | |
1194 // (THR_BOUND) or using LWP-based synchronization. Note that there is a | |
1195 // slight timing window with respect to sampling _os_thread_count, but | |
1196 // the race is benign. Also, we should periodically recompute | |
1197 // _processors_online as the min of SC_NPROCESSORS_ONLN and the | |
1198 // the number of PEs in our partition. You might be tempted to use | |
1199 // THR_NEW_LWP here, but I'd recommend against it as that could | |
1200 // result in undesirable growth of the libthread's LWP pool. | |
1201 // The fix below isn't sufficient; for instance, it doesn't take into count | |
1202 // LWPs parked on IO. It does, however, help certain CPU-bound benchmarks. | |
1203 // | |
1204 // Some pathologies this scheme doesn't handle: | |
1205 // * Threads can block, releasing the LWPs. The LWPs can age out. | |
1206 // When a large number of threads become ready again there aren't | |
1207 // enough LWPs available to service them. This can occur when the | |
1208 // number of ready threads oscillates. | |
1209 // * LWPs/Threads park on IO, thus taking the LWP out of circulation. | |
1210 // | |
1211 // Finally, we should call thr_setconcurrency() periodically to refresh | |
1212 // the LWP pool and thwart the LWP age-out mechanism. | |
1213 // The "+3" term provides a little slop -- we want to slightly overprovision. | |
1214 | |
1215 if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) { | |
1216 if (!(flags & THR_BOUND)) { | |
1217 thr_setconcurrency (os::Solaris::_os_thread_count); // avoid starvation | |
1218 } | |
1219 } | |
1220 // Although this doesn't hurt, we should warn of undefined behavior | |
1221 // when using unbound T1 threads with schedctl(). This should never | |
1222 // happen, as the compiler and VM threads are always created bound | |
1223 DEBUG_ONLY( | |
1224 if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) && | |
1225 (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) && | |
1226 ((thr_type == vm_thread) || (thr_type == cgc_thread) || | |
1227 (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) { | |
1228 warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound"); | |
1229 } | |
1230 ); | |
1231 | |
1232 | |
1233 // Mark that we don't have an lwp or thread id yet. | |
1234 // In case we attempt to set the priority before the thread starts. | |
1235 osthread->set_lwp_id(-1); | |
1236 osthread->set_thread_id(-1); | |
1237 | |
1238 status = thr_create(NULL, stack_size, java_start, thread, flags, &tid); | |
1239 if (status != 0) { | |
1240 if (PrintMiscellaneous && (Verbose || WizardMode)) { | |
1241 perror("os::create_thread"); | |
1242 } | |
1243 thread->set_osthread(NULL); | |
1244 // Need to clean up stuff we've allocated so far | |
1245 delete osthread; | |
1246 return false; | |
1247 } | |
1248 | |
1249 Atomic::inc(&os::Solaris::_os_thread_count); | |
1250 | |
1251 // Store info on the Solaris thread into the OSThread | |
1252 osthread->set_thread_id(tid); | |
1253 | |
1254 // Remember that we created this thread so we can set priority on it | |
1255 osthread->set_vm_created(); | |
1256 | |
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1257 // Set the default thread priority. If using bound threads, setting |
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1258 // lwp priority will be delayed until thread start. |
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1259 set_native_priority(thread, |
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1260 DefaultThreadPriority == -1 ? |
0 | 1261 java_to_os_priority[NormPriority] : |
1262 DefaultThreadPriority); | |
1263 | |
1264 // Initial thread state is INITIALIZED, not SUSPENDED | |
1265 osthread->set_state(INITIALIZED); | |
1266 | |
1267 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
1268 return true; | |
1269 } | |
1270 | |
1271 /* defined for >= Solaris 10. This allows builds on earlier versions | |
1272 * of Solaris to take advantage of the newly reserved Solaris JVM signals | |
1273 * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2 | |
1274 * and -XX:+UseAltSigs does nothing since these should have no conflict | |
1275 */ | |
1276 #if !defined(SIGJVM1) | |
1277 #define SIGJVM1 39 | |
1278 #define SIGJVM2 40 | |
1279 #endif | |
1280 | |
1281 debug_only(static bool signal_sets_initialized = false); | |
1282 static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; | |
1283 int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL; | |
1284 int os::Solaris::_SIGasync = ASYNC_SIGNAL; | |
1285 | |
1286 bool os::Solaris::is_sig_ignored(int sig) { | |
1287 struct sigaction oact; | |
1288 sigaction(sig, (struct sigaction*)NULL, &oact); | |
1289 void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) | |
1290 : CAST_FROM_FN_PTR(void*, oact.sa_handler); | |
1291 if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) | |
1292 return true; | |
1293 else | |
1294 return false; | |
1295 } | |
1296 | |
1297 // Note: SIGRTMIN is a macro that calls sysconf() so it will | |
1298 // dynamically detect SIGRTMIN value for the system at runtime, not buildtime | |
1299 static bool isJVM1available() { | |
1300 return SIGJVM1 < SIGRTMIN; | |
1301 } | |
1302 | |
1303 void os::Solaris::signal_sets_init() { | |
1304 // Should also have an assertion stating we are still single-threaded. | |
1305 assert(!signal_sets_initialized, "Already initialized"); | |
1306 // Fill in signals that are necessarily unblocked for all threads in | |
1307 // the VM. Currently, we unblock the following signals: | |
1308 // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden | |
1309 // by -Xrs (=ReduceSignalUsage)); | |
1310 // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all | |
1311 // other threads. The "ReduceSignalUsage" boolean tells us not to alter | |
1312 // the dispositions or masks wrt these signals. | |
1313 // Programs embedding the VM that want to use the above signals for their | |
1314 // own purposes must, at this time, use the "-Xrs" option to prevent | |
1315 // interference with shutdown hooks and BREAK_SIGNAL thread dumping. | |
1316 // (See bug 4345157, and other related bugs). | |
1317 // In reality, though, unblocking these signals is really a nop, since | |
1318 // these signals are not blocked by default. | |
1319 sigemptyset(&unblocked_sigs); | |
1320 sigemptyset(&allowdebug_blocked_sigs); | |
1321 sigaddset(&unblocked_sigs, SIGILL); | |
1322 sigaddset(&unblocked_sigs, SIGSEGV); | |
1323 sigaddset(&unblocked_sigs, SIGBUS); | |
1324 sigaddset(&unblocked_sigs, SIGFPE); | |
1325 | |
1326 if (isJVM1available) { | |
1327 os::Solaris::set_SIGinterrupt(SIGJVM1); | |
1328 os::Solaris::set_SIGasync(SIGJVM2); | |
1329 } else if (UseAltSigs) { | |
1330 os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL); | |
1331 os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL); | |
1332 } else { | |
1333 os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL); | |
1334 os::Solaris::set_SIGasync(ASYNC_SIGNAL); | |
1335 } | |
1336 | |
1337 sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt()); | |
1338 sigaddset(&unblocked_sigs, os::Solaris::SIGasync()); | |
1339 | |
1340 if (!ReduceSignalUsage) { | |
1341 if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) { | |
1342 sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); | |
1343 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL); | |
1344 } | |
1345 if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) { | |
1346 sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); | |
1347 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL); | |
1348 } | |
1349 if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) { | |
1350 sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); | |
1351 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL); | |
1352 } | |
1353 } | |
1354 // Fill in signals that are blocked by all but the VM thread. | |
1355 sigemptyset(&vm_sigs); | |
1356 if (!ReduceSignalUsage) | |
1357 sigaddset(&vm_sigs, BREAK_SIGNAL); | |
1358 debug_only(signal_sets_initialized = true); | |
1359 | |
1360 // For diagnostics only used in run_periodic_checks | |
1361 sigemptyset(&check_signal_done); | |
1362 } | |
1363 | |
1364 // These are signals that are unblocked while a thread is running Java. | |
1365 // (For some reason, they get blocked by default.) | |
1366 sigset_t* os::Solaris::unblocked_signals() { | |
1367 assert(signal_sets_initialized, "Not initialized"); | |
1368 return &unblocked_sigs; | |
1369 } | |
1370 | |
1371 // These are the signals that are blocked while a (non-VM) thread is | |
1372 // running Java. Only the VM thread handles these signals. | |
1373 sigset_t* os::Solaris::vm_signals() { | |
1374 assert(signal_sets_initialized, "Not initialized"); | |
1375 return &vm_sigs; | |
1376 } | |
1377 | |
1378 // These are signals that are blocked during cond_wait to allow debugger in | |
1379 sigset_t* os::Solaris::allowdebug_blocked_signals() { | |
1380 assert(signal_sets_initialized, "Not initialized"); | |
1381 return &allowdebug_blocked_sigs; | |
1382 } | |
1383 | |
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1384 |
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1385 void _handle_uncaught_cxx_exception() { |
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1386 VMError err("An uncaught C++ exception"); |
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1387 err.report_and_die(); |
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1388 } |
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1389 |
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1390 |
0 | 1391 // First crack at OS-specific initialization, from inside the new thread. |
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1392 void os::initialize_thread(Thread* thr) { |
0 | 1393 int r = thr_main() ; |
1394 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
1395 if (r) { | |
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1396 JavaThread* jt = (JavaThread *)thr; |
0 | 1397 assert(jt != NULL,"Sanity check"); |
1398 size_t stack_size; | |
1399 address base = jt->stack_base(); | |
1400 if (Arguments::created_by_java_launcher()) { | |
1401 // Use 2MB to allow for Solaris 7 64 bit mode. | |
1402 stack_size = JavaThread::stack_size_at_create() == 0 | |
1403 ? 2048*K : JavaThread::stack_size_at_create(); | |
1404 | |
1405 // There are rare cases when we may have already used more than | |
1406 // the basic stack size allotment before this method is invoked. | |
1407 // Attempt to allow for a normally sized java_stack. | |
1408 size_t current_stack_offset = (size_t)(base - (address)&stack_size); | |
1409 stack_size += ReservedSpace::page_align_size_down(current_stack_offset); | |
1410 } else { | |
1411 // 6269555: If we were not created by a Java launcher, i.e. if we are | |
1412 // running embedded in a native application, treat the primordial thread | |
1413 // as much like a native attached thread as possible. This means using | |
1414 // the current stack size from thr_stksegment(), unless it is too large | |
1415 // to reliably setup guard pages. A reasonable max size is 8MB. | |
1416 size_t current_size = current_stack_size(); | |
1417 // This should never happen, but just in case.... | |
1418 if (current_size == 0) current_size = 2 * K * K; | |
1419 stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size; | |
1420 } | |
1421 address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());; | |
1422 stack_size = (size_t)(base - bottom); | |
1423 | |
1424 assert(stack_size > 0, "Stack size calculation problem"); | |
1425 | |
1426 if (stack_size > jt->stack_size()) { | |
1427 NOT_PRODUCT( | |
1428 struct rlimit limits; | |
1429 getrlimit(RLIMIT_STACK, &limits); | |
1430 size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur); | |
1431 assert(size >= jt->stack_size(), "Stack size problem in main thread"); | |
1432 ) | |
1433 tty->print_cr( | |
1434 "Stack size of %d Kb exceeds current limit of %d Kb.\n" | |
1435 "(Stack sizes are rounded up to a multiple of the system page size.)\n" | |
1436 "See limit(1) to increase the stack size limit.", | |
1437 stack_size / K, jt->stack_size() / K); | |
1438 vm_exit(1); | |
1439 } | |
1440 assert(jt->stack_size() >= stack_size, | |
1441 "Attempt to map more stack than was allocated"); | |
1442 jt->set_stack_size(stack_size); | |
1443 } | |
1444 | |
1445 // 5/22/01: Right now alternate signal stacks do not handle | |
1446 // throwing stack overflow exceptions, see bug 4463178 | |
1447 // Until a fix is found for this, T2 will NOT imply alternate signal | |
1448 // stacks. | |
1449 // If using T2 libthread threads, install an alternate signal stack. | |
1450 // Because alternate stacks associate with LWPs on Solaris, | |
1451 // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads | |
1452 // we prefer to explicitly stack bang. | |
1453 // If not using T2 libthread, but using UseBoundThreads any threads | |
1454 // (primordial thread, jni_attachCurrentThread) we do not create, | |
1455 // probably are not bound, therefore they can not have an alternate | |
1456 // signal stack. Since our stack banging code is generated and | |
1457 // is shared across threads, all threads must be bound to allow | |
1458 // using alternate signal stacks. The alternative is to interpose | |
1459 // on _lwp_create to associate an alt sig stack with each LWP, | |
1460 // and this could be a problem when the JVM is embedded. | |
1461 // We would prefer to use alternate signal stacks with T2 | |
1462 // Since there is currently no accurate way to detect T2 | |
1463 // we do not. Assuming T2 when running T1 causes sig 11s or assertions | |
1464 // on installing alternate signal stacks | |
1465 | |
1466 | |
1467 // 05/09/03: removed alternate signal stack support for Solaris | |
1468 // The alternate signal stack mechanism is no longer needed to | |
1469 // handle stack overflow. This is now handled by allocating | |
1470 // guard pages (red zone) and stackbanging. | |
1471 // Initially the alternate signal stack mechanism was removed because | |
1472 // it did not work with T1 llibthread. Alternate | |
1473 // signal stacks MUST have all threads bound to lwps. Applications | |
1474 // can create their own threads and attach them without their being | |
1475 // bound under T1. This is frequently the case for the primordial thread. | |
1476 // If we were ever to reenable this mechanism we would need to | |
1477 // use the dynamic check for T2 libthread. | |
1478 | |
1479 os::Solaris::init_thread_fpu_state(); | |
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1480 std::set_terminate(_handle_uncaught_cxx_exception); |
0 | 1481 } |
1482 | |
1483 | |
1484 | |
1485 // Free Solaris resources related to the OSThread | |
1486 void os::free_thread(OSThread* osthread) { | |
1487 assert(osthread != NULL, "os::free_thread but osthread not set"); | |
1488 | |
1489 | |
1490 // We are told to free resources of the argument thread, | |
1491 // but we can only really operate on the current thread. | |
1492 // The main thread must take the VMThread down synchronously | |
1493 // before the main thread exits and frees up CodeHeap | |
1494 guarantee((Thread::current()->osthread() == osthread | |
1495 || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread"); | |
1496 if (Thread::current()->osthread() == osthread) { | |
1497 // Restore caller's signal mask | |
1498 sigset_t sigmask = osthread->caller_sigmask(); | |
1499 thr_sigsetmask(SIG_SETMASK, &sigmask, NULL); | |
1500 } | |
1501 delete osthread; | |
1502 } | |
1503 | |
1504 void os::pd_start_thread(Thread* thread) { | |
1505 int status = thr_continue(thread->osthread()->thread_id()); | |
1506 assert_status(status == 0, status, "thr_continue failed"); | |
1507 } | |
1508 | |
1509 | |
1510 intx os::current_thread_id() { | |
1511 return (intx)thr_self(); | |
1512 } | |
1513 | |
1514 static pid_t _initial_pid = 0; | |
1515 | |
1516 int os::current_process_id() { | |
1517 return (int)(_initial_pid ? _initial_pid : getpid()); | |
1518 } | |
1519 | |
1520 int os::allocate_thread_local_storage() { | |
1521 // %%% in Win32 this allocates a memory segment pointed to by a | |
1522 // register. Dan Stein can implement a similar feature in | |
1523 // Solaris. Alternatively, the VM can do the same thing | |
1524 // explicitly: malloc some storage and keep the pointer in a | |
1525 // register (which is part of the thread's context) (or keep it | |
1526 // in TLS). | |
1527 // %%% In current versions of Solaris, thr_self and TSD can | |
1528 // be accessed via short sequences of displaced indirections. | |
1529 // The value of thr_self is available as %g7(36). | |
1530 // The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4), | |
1531 // assuming that the current thread already has a value bound to k. | |
1532 // It may be worth experimenting with such access patterns, | |
1533 // and later having the parameters formally exported from a Solaris | |
1534 // interface. I think, however, that it will be faster to | |
1535 // maintain the invariant that %g2 always contains the | |
1536 // JavaThread in Java code, and have stubs simply | |
1537 // treat %g2 as a caller-save register, preserving it in a %lN. | |
1538 thread_key_t tk; | |
1539 if (thr_keycreate( &tk, NULL ) ) | |
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1540 fatal(err_msg("os::allocate_thread_local_storage: thr_keycreate failed " |
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1541 "(%s)", strerror(errno))); |
0 | 1542 return int(tk); |
1543 } | |
1544 | |
1545 void os::free_thread_local_storage(int index) { | |
1546 // %%% don't think we need anything here | |
1547 // if ( pthread_key_delete((pthread_key_t) tk) ) | |
1548 // fatal("os::free_thread_local_storage: pthread_key_delete failed"); | |
1549 } | |
1550 | |
1551 #define SMALLINT 32 // libthread allocate for tsd_common is a version specific | |
1552 // small number - point is NO swap space available | |
1553 void os::thread_local_storage_at_put(int index, void* value) { | |
1554 // %%% this is used only in threadLocalStorage.cpp | |
1555 if (thr_setspecific((thread_key_t)index, value)) { | |
1556 if (errno == ENOMEM) { | |
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1557 vm_exit_out_of_memory(SMALLINT, OOM_MALLOC_ERROR, |
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1558 "thr_setspecific: out of swap space"); |
0 | 1559 } else { |
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1560 fatal(err_msg("os::thread_local_storage_at_put: thr_setspecific failed " |
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1561 "(%s)", strerror(errno))); |
0 | 1562 } |
1563 } else { | |
1564 ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ; | |
1565 } | |
1566 } | |
1567 | |
1568 // This function could be called before TLS is initialized, for example, when | |
1569 // VM receives an async signal or when VM causes a fatal error during | |
1570 // initialization. Return NULL if thr_getspecific() fails. | |
1571 void* os::thread_local_storage_at(int index) { | |
1572 // %%% this is used only in threadLocalStorage.cpp | |
1573 void* r = NULL; | |
1574 return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r; | |
1575 } | |
1576 | |
1577 | |
1578 // gethrtime can move backwards if read from one cpu and then a different cpu | |
1579 // getTimeNanos is guaranteed to not move backward on Solaris | |
1580 // local spinloop created as faster for a CAS on an int than | |
1581 // a CAS on a 64bit jlong. Also Atomic::cmpxchg for jlong is not | |
1582 // supported on sparc v8 or pre supports_cx8 intel boxes. | |
1583 // oldgetTimeNanos for systems which do not support CAS on 64bit jlong | |
1584 // i.e. sparc v8 and pre supports_cx8 (i486) intel boxes | |
1585 inline hrtime_t oldgetTimeNanos() { | |
1586 int gotlock = LOCK_INVALID; | |
1587 hrtime_t newtime = gethrtime(); | |
1588 | |
1589 for (;;) { | |
1590 // grab lock for max_hrtime | |
1591 int curlock = max_hrtime_lock; | |
1592 if (curlock & LOCK_BUSY) continue; | |
1593 if (gotlock = Atomic::cmpxchg(LOCK_BUSY, &max_hrtime_lock, LOCK_FREE) != LOCK_FREE) continue; | |
1594 if (newtime > max_hrtime) { | |
1595 max_hrtime = newtime; | |
1596 } else { | |
1597 newtime = max_hrtime; | |
1598 } | |
1599 // release lock | |
1600 max_hrtime_lock = LOCK_FREE; | |
1601 return newtime; | |
1602 } | |
1603 } | |
1604 // gethrtime can move backwards if read from one cpu and then a different cpu | |
1605 // getTimeNanos is guaranteed to not move backward on Solaris | |
1606 inline hrtime_t getTimeNanos() { | |
1607 if (VM_Version::supports_cx8()) { | |
499 | 1608 const hrtime_t now = gethrtime(); |
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1609 // Use atomic long load since 32-bit x86 uses 2 registers to keep long. |
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1610 const hrtime_t prev = Atomic::load((volatile jlong*)&max_hrtime); |
499 | 1611 if (now <= prev) return prev; // same or retrograde time; |
1612 const hrtime_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&max_hrtime, prev); | |
1613 assert(obsv >= prev, "invariant"); // Monotonicity | |
1614 // If the CAS succeeded then we're done and return "now". | |
1615 // If the CAS failed and the observed value "obs" is >= now then | |
1616 // we should return "obs". If the CAS failed and now > obs > prv then | |
1617 // some other thread raced this thread and installed a new value, in which case | |
1618 // we could either (a) retry the entire operation, (b) retry trying to install now | |
1619 // or (c) just return obs. We use (c). No loop is required although in some cases | |
1620 // we might discard a higher "now" value in deference to a slightly lower but freshly | |
1621 // installed obs value. That's entirely benign -- it admits no new orderings compared | |
1622 // to (a) or (b) -- and greatly reduces coherence traffic. | |
1623 // We might also condition (c) on the magnitude of the delta between obs and now. | |
1624 // Avoiding excessive CAS operations to hot RW locations is critical. | |
1625 // See http://blogs.sun.com/dave/entry/cas_and_cache_trivia_invalidate | |
1626 return (prev == obsv) ? now : obsv ; | |
0 | 1627 } else { |
1628 return oldgetTimeNanos(); | |
1629 } | |
1630 } | |
1631 | |
1632 // Time since start-up in seconds to a fine granularity. | |
1633 // Used by VMSelfDestructTimer and the MemProfiler. | |
1634 double os::elapsedTime() { | |
1635 return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz; | |
1636 } | |
1637 | |
1638 jlong os::elapsed_counter() { | |
1639 return (jlong)(getTimeNanos() - first_hrtime); | |
1640 } | |
1641 | |
1642 jlong os::elapsed_frequency() { | |
1643 return hrtime_hz; | |
1644 } | |
1645 | |
1646 // Return the real, user, and system times in seconds from an | |
1647 // arbitrary fixed point in the past. | |
1648 bool os::getTimesSecs(double* process_real_time, | |
1649 double* process_user_time, | |
1650 double* process_system_time) { | |
1651 struct tms ticks; | |
1652 clock_t real_ticks = times(&ticks); | |
1653 | |
1654 if (real_ticks == (clock_t) (-1)) { | |
1655 return false; | |
1656 } else { | |
1657 double ticks_per_second = (double) clock_tics_per_sec; | |
1658 *process_user_time = ((double) ticks.tms_utime) / ticks_per_second; | |
1659 *process_system_time = ((double) ticks.tms_stime) / ticks_per_second; | |
1660 // For consistency return the real time from getTimeNanos() | |
1661 // converted to seconds. | |
1662 *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS); | |
1663 | |
1664 return true; | |
1665 } | |
1666 } | |
1667 | |
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1668 bool os::supports_vtime() { return true; } |
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1669 |
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1670 bool os::enable_vtime() { |
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1671 int fd = ::open("/proc/self/ctl", O_WRONLY); |
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1672 if (fd == -1) |
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1673 return false; |
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1674 |
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1675 long cmd[] = { PCSET, PR_MSACCT }; |
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1676 int res = ::write(fd, cmd, sizeof(long) * 2); |
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1677 ::close(fd); |
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1678 if (res != sizeof(long) * 2) |
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1679 return false; |
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1680 |
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1681 return true; |
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1682 } |
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1683 |
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1684 bool os::vtime_enabled() { |
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1685 int fd = ::open("/proc/self/status", O_RDONLY); |
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1686 if (fd == -1) |
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1687 return false; |
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1688 |
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1689 pstatus_t status; |
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1690 int res = os::read(fd, (void*) &status, sizeof(pstatus_t)); |
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1691 ::close(fd); |
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1692 if (res != sizeof(pstatus_t)) |
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1693 return false; |
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1694 |
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1695 return status.pr_flags & PR_MSACCT; |
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1696 } |
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1697 |
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1698 double os::elapsedVTime() { |
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1699 return (double)gethrvtime() / (double)hrtime_hz; |
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1700 } |
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1701 |
0 | 1702 // Used internally for comparisons only |
1703 // getTimeMillis guaranteed to not move backwards on Solaris | |
1704 jlong getTimeMillis() { | |
1705 jlong nanotime = getTimeNanos(); | |
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1706 return (jlong)(nanotime / NANOSECS_PER_MILLISEC); |
0 | 1707 } |
1708 | |
61 | 1709 // Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis |
1710 jlong os::javaTimeMillis() { | |
0 | 1711 timeval t; |
1712 if (gettimeofday( &t, NULL) == -1) | |
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1713 fatal(err_msg("os::javaTimeMillis: gettimeofday (%s)", strerror(errno))); |
0 | 1714 return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000; |
1715 } | |
1716 | |
1717 jlong os::javaTimeNanos() { | |
1718 return (jlong)getTimeNanos(); | |
1719 } | |
1720 | |
1721 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
1722 info_ptr->max_value = ALL_64_BITS; // gethrtime() uses all 64 bits | |
1723 info_ptr->may_skip_backward = false; // not subject to resetting or drifting | |
1724 info_ptr->may_skip_forward = false; // not subject to resetting or drifting | |
1725 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
1726 } | |
1727 | |
1728 char * os::local_time_string(char *buf, size_t buflen) { | |
1729 struct tm t; | |
1730 time_t long_time; | |
1731 time(&long_time); | |
1732 localtime_r(&long_time, &t); | |
1733 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
1734 t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, | |
1735 t.tm_hour, t.tm_min, t.tm_sec); | |
1736 return buf; | |
1737 } | |
1738 | |
1739 // Note: os::shutdown() might be called very early during initialization, or | |
1740 // called from signal handler. Before adding something to os::shutdown(), make | |
1741 // sure it is async-safe and can handle partially initialized VM. | |
1742 void os::shutdown() { | |
1743 | |
1744 // allow PerfMemory to attempt cleanup of any persistent resources | |
1745 perfMemory_exit(); | |
1746 | |
1747 // needs to remove object in file system | |
1748 AttachListener::abort(); | |
1749 | |
1750 // flush buffered output, finish log files | |
1751 ostream_abort(); | |
1752 | |
1753 // Check for abort hook | |
1754 abort_hook_t abort_hook = Arguments::abort_hook(); | |
1755 if (abort_hook != NULL) { | |
1756 abort_hook(); | |
1757 } | |
1758 } | |
1759 | |
1760 // Note: os::abort() might be called very early during initialization, or | |
1761 // called from signal handler. Before adding something to os::abort(), make | |
1762 // sure it is async-safe and can handle partially initialized VM. | |
1763 void os::abort(bool dump_core) { | |
1764 os::shutdown(); | |
1765 if (dump_core) { | |
1766 #ifndef PRODUCT | |
1767 fdStream out(defaultStream::output_fd()); | |
1768 out.print_raw("Current thread is "); | |
1769 char buf[16]; | |
1770 jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); | |
1771 out.print_raw_cr(buf); | |
1772 out.print_raw_cr("Dumping core ..."); | |
1773 #endif | |
1774 ::abort(); // dump core (for debugging) | |
1775 } | |
1776 | |
1777 ::exit(1); | |
1778 } | |
1779 | |
1780 // Die immediately, no exit hook, no abort hook, no cleanup. | |
1781 void os::die() { | |
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1782 ::abort(); // dump core (for debugging) |
0 | 1783 } |
1784 | |
1785 // unused | |
1786 void os::set_error_file(const char *logfile) {} | |
1787 | |
1788 // DLL functions | |
1789 | |
1790 const char* os::dll_file_extension() { return ".so"; } | |
1791 | |
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|
1792 // This must be hard coded because it's the system's temporary |
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|
1793 // directory not the java application's temp directory, ala java.io.tmpdir. |
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|
1794 const char* os::get_temp_directory() { return "/tmp"; } |
0 | 1795 |
691 | 1796 static bool file_exists(const char* filename) { |
1797 struct stat statbuf; | |
1798 if (filename == NULL || strlen(filename) == 0) { | |
1799 return false; | |
1800 } | |
1801 return os::stat(filename, &statbuf) == 0; | |
1802 } | |
1803 | |
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|
1804 bool os::dll_build_name(char* buffer, size_t buflen, |
691 | 1805 const char* pname, const char* fname) { |
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1806 bool retval = false; |
242 | 1807 const size_t pnamelen = pname ? strlen(pname) : 0; |
1808 | |
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1809 // Return error on buffer overflow. |
242 | 1810 if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { |
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1811 return retval; |
242 | 1812 } |
1813 | |
1814 if (pnamelen == 0) { | |
691 | 1815 snprintf(buffer, buflen, "lib%s.so", fname); |
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1816 retval = true; |
691 | 1817 } else if (strchr(pname, *os::path_separator()) != NULL) { |
1818 int n; | |
1819 char** pelements = split_path(pname, &n); | |
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1820 if (pelements == NULL) { |
9062 | 1821 return false; |
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|
1822 } |
691 | 1823 for (int i = 0 ; i < n ; i++) { |
1824 // really shouldn't be NULL but what the heck, check can't hurt | |
1825 if (pelements[i] == NULL || strlen(pelements[i]) == 0) { | |
1826 continue; // skip the empty path values | |
1827 } | |
1828 snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname); | |
1829 if (file_exists(buffer)) { | |
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|
1830 retval = true; |
691 | 1831 break; |
1832 } | |
1833 } | |
1834 // release the storage | |
1835 for (int i = 0 ; i < n ; i++) { | |
1836 if (pelements[i] != NULL) { | |
6197 | 1837 FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); |
691 | 1838 } |
1839 } | |
1840 if (pelements != NULL) { | |
6197 | 1841 FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); |
691 | 1842 } |
242 | 1843 } else { |
691 | 1844 snprintf(buffer, buflen, "%s/lib%s.so", pname, fname); |
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1845 retval = true; |
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1846 } |
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1847 return retval; |
242 | 1848 } |
1849 | |
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1850 // check if addr is inside libjvm.so |
0 | 1851 bool os::address_is_in_vm(address addr) { |
1852 static address libjvm_base_addr; | |
1853 Dl_info dlinfo; | |
1854 | |
1855 if (libjvm_base_addr == NULL) { | |
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1856 if (dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo) != 0) { |
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1857 libjvm_base_addr = (address)dlinfo.dli_fbase; |
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1858 } |
0 | 1859 assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); |
1860 } | |
1861 | |
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1862 if (dladdr((void *)addr, &dlinfo) != 0) { |
0 | 1863 if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; |
1864 } | |
1865 | |
1866 return false; | |
1867 } | |
1868 | |
1869 typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int); | |
1870 static dladdr1_func_type dladdr1_func = NULL; | |
1871 | |
1872 bool os::dll_address_to_function_name(address addr, char *buf, | |
1873 int buflen, int * offset) { | |
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1874 // buf is not optional, but offset is optional |
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1875 assert(buf != NULL, "sanity check"); |
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1876 |
0 | 1877 Dl_info dlinfo; |
1878 | |
1879 // dladdr1_func was initialized in os::init() | |
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1880 if (dladdr1_func != NULL) { |
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1881 // yes, we have dladdr1 |
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1882 |
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1883 // Support for dladdr1 is checked at runtime; it may be |
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1884 // available even if the vm is built on a machine that does |
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1885 // not have dladdr1 support. Make sure there is a value for |
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1886 // RTLD_DL_SYMENT. |
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1887 #ifndef RTLD_DL_SYMENT |
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1888 #define RTLD_DL_SYMENT 1 |
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1889 #endif |
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1890 #ifdef _LP64 |
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1891 Elf64_Sym * info; |
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1892 #else |
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1893 Elf32_Sym * info; |
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1894 #endif |
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1895 if (dladdr1_func((void *)addr, &dlinfo, (void **)&info, |
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1896 RTLD_DL_SYMENT) != 0) { |
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1897 // see if we have a matching symbol that covers our address |
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1898 if (dlinfo.dli_saddr != NULL && |
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1899 (char *)dlinfo.dli_saddr + info->st_size > (char *)addr) { |
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1900 if (dlinfo.dli_sname != NULL) { |
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1901 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) { |
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1902 jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); |
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1903 } |
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1904 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
2022
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1905 return true; |
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1906 } |
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1907 } |
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1908 // no matching symbol so try for just file info |
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1909 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { |
2022
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1910 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
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1911 buf, buflen, offset, dlinfo.dli_fname)) { |
0 | 1912 return true; |
2022
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1913 } |
0 | 1914 } |
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1915 } |
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1916 buf[0] = '\0'; |
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1917 if (offset != NULL) *offset = -1; |
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1918 return false; |
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1919 } |
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1920 |
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1921 // no, only dladdr is available |
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1922 if (dladdr((void *)addr, &dlinfo) != 0) { |
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1923 // see if we have a matching symbol |
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1924 if (dlinfo.dli_saddr != NULL && dlinfo.dli_sname != NULL) { |
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1925 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) { |
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1926 jio_snprintf(buf, buflen, dlinfo.dli_sname); |
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1927 } |
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1928 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
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1929 return true; |
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1930 } |
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1931 // no matching symbol so try for just file info |
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1932 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { |
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1933 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
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1934 buf, buflen, offset, dlinfo.dli_fname)) { |
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1935 return true; |
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1936 } |
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1937 } |
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1938 } |
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1939 buf[0] = '\0'; |
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1940 if (offset != NULL) *offset = -1; |
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1941 return false; |
0 | 1942 } |
1943 | |
1944 bool os::dll_address_to_library_name(address addr, char* buf, | |
1945 int buflen, int* offset) { | |
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1946 // buf is not optional, but offset is optional |
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1947 assert(buf != NULL, "sanity check"); |
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1948 |
0 | 1949 Dl_info dlinfo; |
1950 | |
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1951 if (dladdr((void*)addr, &dlinfo) != 0) { |
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1952 if (dlinfo.dli_fname != NULL) { |
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1953 jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); |
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|
1954 } |
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|
1955 if (dlinfo.dli_fbase != NULL && offset != NULL) { |
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|
1956 *offset = addr - (address)dlinfo.dli_fbase; |
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|
1957 } |
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|
1958 return true; |
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|
1959 } |
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|
1960 |
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|
1961 buf[0] = '\0'; |
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1962 if (offset) *offset = -1; |
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1963 return false; |
0 | 1964 } |
1965 | |
1966 // Prints the names and full paths of all opened dynamic libraries | |
1967 // for current process | |
1968 void os::print_dll_info(outputStream * st) { | |
11092
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1969 Dl_info dli; |
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|
1970 void *handle; |
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|
1971 Link_map *map; |
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|
1972 Link_map *p; |
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|
1973 |
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|
1974 st->print_cr("Dynamic libraries:"); st->flush(); |
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|
1975 |
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|
1976 if (dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli) == 0 || |
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|
1977 dli.dli_fname == NULL) { |
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|
1978 st->print_cr("Error: Cannot print dynamic libraries."); |
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|
1979 return; |
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|
1980 } |
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|
1981 handle = dlopen(dli.dli_fname, RTLD_LAZY); |
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|
1982 if (handle == NULL) { |
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dcubed
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|
1983 st->print_cr("Error: Cannot print dynamic libraries."); |
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dcubed
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|
1984 return; |
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|
1985 } |
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|
1986 dlinfo(handle, RTLD_DI_LINKMAP, &map); |
59b052799158
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dcubed
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|
1987 if (map == NULL) { |
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diff
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|
1988 st->print_cr("Error: Cannot print dynamic libraries."); |
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dcubed
parents:
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diff
changeset
|
1989 return; |
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diff
changeset
|
1990 } |
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parents:
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diff
changeset
|
1991 |
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dcubed
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diff
changeset
|
1992 while (map->l_prev != NULL) |
59b052799158
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dcubed
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|
1993 map = map->l_prev; |
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dcubed
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changeset
|
1994 |
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dcubed
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changeset
|
1995 while (map != NULL) { |
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dcubed
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changeset
|
1996 st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name); |
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|
1997 map = map->l_next; |
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changeset
|
1998 } |
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changeset
|
1999 |
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changeset
|
2000 dlclose(handle); |
0 | 2001 } |
2002 | |
2003 // Loads .dll/.so and | |
2004 // in case of error it checks if .dll/.so was built for the | |
2005 // same architecture as Hotspot is running on | |
2006 | |
2007 void * os::dll_load(const char *filename, char *ebuf, int ebuflen) | |
2008 { | |
2009 void * result= ::dlopen(filename, RTLD_LAZY); | |
2010 if (result != NULL) { | |
2011 // Successful loading | |
2012 return result; | |
2013 } | |
2014 | |
2015 Elf32_Ehdr elf_head; | |
2016 | |
2017 // Read system error message into ebuf | |
2018 // It may or may not be overwritten below | |
2019 ::strncpy(ebuf, ::dlerror(), ebuflen-1); | |
2020 ebuf[ebuflen-1]='\0'; | |
2021 int diag_msg_max_length=ebuflen-strlen(ebuf); | |
2022 char* diag_msg_buf=ebuf+strlen(ebuf); | |
2023 | |
2024 if (diag_msg_max_length==0) { | |
2025 // No more space in ebuf for additional diagnostics message | |
2026 return NULL; | |
2027 } | |
2028 | |
2029 | |
2030 int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); | |
2031 | |
2032 if (file_descriptor < 0) { | |
2033 // Can't open library, report dlerror() message | |
2034 return NULL; | |
2035 } | |
2036 | |
2037 bool failed_to_read_elf_head= | |
2038 (sizeof(elf_head)!= | |
2039 (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ; | |
2040 | |
2041 ::close(file_descriptor); | |
2042 if (failed_to_read_elf_head) { | |
2043 // file i/o error - report dlerror() msg | |
2044 return NULL; | |
2045 } | |
2046 | |
2047 typedef struct { | |
2048 Elf32_Half code; // Actual value as defined in elf.h | |
2049 Elf32_Half compat_class; // Compatibility of archs at VM's sense | |
2050 char elf_class; // 32 or 64 bit | |
2051 char endianess; // MSB or LSB | |
2052 char* name; // String representation | |
2053 } arch_t; | |
2054 | |
2055 static const arch_t arch_array[]={ | |
2056 {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
2057 {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
2058 {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, | |
2059 {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, | |
2060 {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
2061 {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
2062 {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, | |
2063 {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, | |
1681
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diff
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|
2064 {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}, |
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|
2065 {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM 32"} |
0 | 2066 }; |
2067 | |
2068 #if (defined IA32) | |
2069 static Elf32_Half running_arch_code=EM_386; | |
2070 #elif (defined AMD64) | |
2071 static Elf32_Half running_arch_code=EM_X86_64; | |
2072 #elif (defined IA64) | |
2073 static Elf32_Half running_arch_code=EM_IA_64; | |
2074 #elif (defined __sparc) && (defined _LP64) | |
2075 static Elf32_Half running_arch_code=EM_SPARCV9; | |
2076 #elif (defined __sparc) && (!defined _LP64) | |
2077 static Elf32_Half running_arch_code=EM_SPARC; | |
2078 #elif (defined __powerpc64__) | |
2079 static Elf32_Half running_arch_code=EM_PPC64; | |
2080 #elif (defined __powerpc__) | |
2081 static Elf32_Half running_arch_code=EM_PPC; | |
1681
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|
2082 #elif (defined ARM) |
126ea7725993
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diff
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|
2083 static Elf32_Half running_arch_code=EM_ARM; |
0 | 2084 #else |
2085 #error Method os::dll_load requires that one of following is defined:\ | |
1681
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|
2086 IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM |
0 | 2087 #endif |
2088 | |
2089 // Identify compatability class for VM's architecture and library's architecture | |
2090 // Obtain string descriptions for architectures | |
2091 | |
2092 arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; | |
2093 int running_arch_index=-1; | |
2094 | |
2095 for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) { | |
2096 if (running_arch_code == arch_array[i].code) { | |
2097 running_arch_index = i; | |
2098 } | |
2099 if (lib_arch.code == arch_array[i].code) { | |
2100 lib_arch.compat_class = arch_array[i].compat_class; | |
2101 lib_arch.name = arch_array[i].name; | |
2102 } | |
2103 } | |
2104 | |
2105 assert(running_arch_index != -1, | |
2106 "Didn't find running architecture code (running_arch_code) in arch_array"); | |
2107 if (running_arch_index == -1) { | |
2108 // Even though running architecture detection failed | |
2109 // we may still continue with reporting dlerror() message | |
2110 return NULL; | |
2111 } | |
2112 | |
2113 if (lib_arch.endianess != arch_array[running_arch_index].endianess) { | |
2114 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); | |
2115 return NULL; | |
2116 } | |
2117 | |
2118 if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { | |
2119 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); | |
2120 return NULL; | |
2121 } | |
2122 | |
2123 if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { | |
2124 if ( lib_arch.name!=NULL ) { | |
2125 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2126 " (Possible cause: can't load %s-bit .so on a %s-bit platform)", | |
2127 lib_arch.name, arch_array[running_arch_index].name); | |
2128 } else { | |
2129 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2130 " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", | |
2131 lib_arch.code, | |
2132 arch_array[running_arch_index].name); | |
2133 } | |
2134 } | |
2135 | |
2136 return NULL; | |
2137 } | |
2138 | |
242 | 2139 void* os::dll_lookup(void* handle, const char* name) { |
2140 return dlsym(handle, name); | |
2141 } | |
0 | 2142 |
14286
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|
2143 void* os::get_default_process_handle() { |
c250880a6673
8031968: Mac OS X: VM starts the agent by calling both Agent_OnAttach and Agent_OnAttach_L functions if its agent library is dynamically linked.
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|
2144 return (void*)::dlopen(NULL, RTLD_LAZY); |
c250880a6673
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|
2145 } |
c250880a6673
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|
2146 |
1980
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diff
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|
2147 int os::stat(const char *path, struct stat *sbuf) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2148 char pathbuf[MAX_PATH]; |
828eafbd85cc
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1972
diff
changeset
|
2149 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
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1972
diff
changeset
|
2150 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2151 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2152 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2153 os::native_path(strcpy(pathbuf, path)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2154 return ::stat(pathbuf, sbuf); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
2155 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2156 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
2157 static bool _print_ascii_file(const char* filename, outputStream* st) { |
828eafbd85cc
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ikrylov
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diff
changeset
|
2158 int fd = ::open(filename, O_RDONLY); |
0 | 2159 if (fd == -1) { |
2160 return false; | |
2161 } | |
2162 | |
2163 char buf[32]; | |
2164 int bytes; | |
1980
828eafbd85cc
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1972
diff
changeset
|
2165 while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) { |
0 | 2166 st->print_raw(buf, bytes); |
2167 } | |
2168 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
2169 ::close(fd); |
0 | 2170 |
2171 return true; | |
2172 } | |
2173 | |
6080
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|
2174 void os::print_os_info_brief(outputStream* st) { |
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|
2175 os::Solaris::print_distro_info(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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changeset
|
2176 |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
changeset
|
2177 os::Posix::print_uname_info(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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changeset
|
2178 |
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7165755: OS Information much longer on linux than other platforms
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diff
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|
2179 os::Solaris::print_libversion_info(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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|
2180 } |
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7165755: OS Information much longer on linux than other platforms
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diff
changeset
|
2181 |
0 | 2182 void os::print_os_info(outputStream* st) { |
2183 st->print("OS:"); | |
2184 | |
6080
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|
2185 os::Solaris::print_distro_info(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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changeset
|
2186 |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
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|
2187 os::Posix::print_uname_info(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
changeset
|
2188 |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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5903
diff
changeset
|
2189 os::Solaris::print_libversion_info(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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changeset
|
2190 |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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5903
diff
changeset
|
2191 os::Posix::print_rlimit_info(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
changeset
|
2192 |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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5903
diff
changeset
|
2193 os::Posix::print_load_average(st); |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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diff
changeset
|
2194 } |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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|
2195 |
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2196 void os::Solaris::print_distro_info(outputStream* st) { |
0 | 2197 if (!_print_ascii_file("/etc/release", st)) { |
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2198 st->print("Solaris"); |
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|
2199 } |
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|
2200 st->cr(); |
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|
2201 } |
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|
2202 |
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|
2203 void os::Solaris::print_libversion_info(outputStream* st) { |
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|
2204 if (os::Solaris::T2_libthread()) { |
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|
2205 st->print(" (T2 libthread)"); |
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|
2206 } |
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|
2207 else { |
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|
2208 st->print(" (T1 libthread)"); |
0 | 2209 } |
2210 st->cr(); | |
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2211 } |
0 | 2212 |
2213 static bool check_addr0(outputStream* st) { | |
2214 jboolean status = false; | |
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2215 int fd = ::open("/proc/self/map",O_RDONLY); |
0 | 2216 if (fd >= 0) { |
2217 prmap_t p; | |
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2218 while(::read(fd, &p, sizeof(p)) > 0) { |
0 | 2219 if (p.pr_vaddr == 0x0) { |
2220 st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname); | |
2221 st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname); | |
2222 st->print("Access:"); | |
2223 st->print("%s",(p.pr_mflags & MA_READ) ? "r" : "-"); | |
2224 st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-"); | |
2225 st->print("%s",(p.pr_mflags & MA_EXEC) ? "x" : "-"); | |
2226 st->cr(); | |
2227 status = true; | |
2228 } | |
2229 } | |
14328 | 2230 ::close(fd); |
0 | 2231 } |
2232 return status; | |
2233 } | |
2234 | |
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|
2235 void os::pd_print_cpu_info(outputStream* st) { |
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|
2236 // Nothing to do for now. |
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|
2237 } |
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|
2238 |
0 | 2239 void os::print_memory_info(outputStream* st) { |
2240 st->print("Memory:"); | |
2241 st->print(" %dk page", os::vm_page_size()>>10); | |
2242 st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10); | |
2243 st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10); | |
2244 st->cr(); | |
2245 (void) check_addr0(st); | |
2246 } | |
2247 | |
2248 void os::print_siginfo(outputStream* st, void* siginfo) { | |
14410 | 2249 const siginfo_t* si = (const siginfo_t*)siginfo; |
2250 | |
2251 os::Posix::print_siginfo_brief(st, si); | |
2252 | |
2253 if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && | |
0 | 2254 UseSharedSpaces) { |
2255 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
2256 if (mapinfo->is_in_shared_space(si->si_addr)) { | |
2257 st->print("\n\nError accessing class data sharing archive." \ | |
2258 " Mapped file inaccessible during execution, " \ | |
2259 " possible disk/network problem."); | |
2260 } | |
2261 } | |
2262 st->cr(); | |
2263 } | |
2264 | |
2265 // Moved from whole group, because we need them here for diagnostic | |
2266 // prints. | |
2267 #define OLDMAXSIGNUM 32 | |
2268 static int Maxsignum = 0; | |
2269 static int *ourSigFlags = NULL; | |
2270 | |
2271 extern "C" void sigINTRHandler(int, siginfo_t*, void*); | |
2272 | |
2273 int os::Solaris::get_our_sigflags(int sig) { | |
2274 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2275 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2276 return ourSigFlags[sig]; | |
2277 } | |
2278 | |
2279 void os::Solaris::set_our_sigflags(int sig, int flags) { | |
2280 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2281 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2282 ourSigFlags[sig] = flags; | |
2283 } | |
2284 | |
2285 | |
2286 static const char* get_signal_handler_name(address handler, | |
2287 char* buf, int buflen) { | |
2288 int offset; | |
2289 bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); | |
2290 if (found) { | |
2291 // skip directory names | |
2292 const char *p1, *p2; | |
2293 p1 = buf; | |
2294 size_t len = strlen(os::file_separator()); | |
2295 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
2296 jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); | |
2297 } else { | |
2298 jio_snprintf(buf, buflen, PTR_FORMAT, handler); | |
2299 } | |
2300 return buf; | |
2301 } | |
2302 | |
2303 static void print_signal_handler(outputStream* st, int sig, | |
2304 char* buf, size_t buflen) { | |
2305 struct sigaction sa; | |
2306 | |
2307 sigaction(sig, NULL, &sa); | |
2308 | |
2309 st->print("%s: ", os::exception_name(sig, buf, buflen)); | |
2310 | |
2311 address handler = (sa.sa_flags & SA_SIGINFO) | |
2312 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) | |
2313 : CAST_FROM_FN_PTR(address, sa.sa_handler); | |
2314 | |
2315 if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { | |
2316 st->print("SIG_DFL"); | |
2317 } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { | |
2318 st->print("SIG_IGN"); | |
2319 } else { | |
2320 st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); | |
2321 } | |
2322 | |
14410 | 2323 st->print(", sa_mask[0]="); |
2324 os::Posix::print_signal_set_short(st, &sa.sa_mask); | |
0 | 2325 |
2326 address rh = VMError::get_resetted_sighandler(sig); | |
2327 // May be, handler was resetted by VMError? | |
2328 if(rh != NULL) { | |
2329 handler = rh; | |
2330 sa.sa_flags = VMError::get_resetted_sigflags(sig); | |
2331 } | |
2332 | |
14410 | 2333 st->print(", sa_flags="); |
2334 os::Posix::print_sa_flags(st, sa.sa_flags); | |
0 | 2335 |
2336 // Check: is it our handler? | |
2337 if(handler == CAST_FROM_FN_PTR(address, signalHandler) || | |
2338 handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) { | |
2339 // It is our signal handler | |
2340 // check for flags | |
2341 if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
2342 st->print( | |
2343 ", flags was changed from " PTR32_FORMAT ", consider using jsig library", | |
2344 os::Solaris::get_our_sigflags(sig)); | |
2345 } | |
2346 } | |
2347 st->cr(); | |
2348 } | |
2349 | |
2350 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
2351 st->print_cr("Signal Handlers:"); | |
2352 print_signal_handler(st, SIGSEGV, buf, buflen); | |
2353 print_signal_handler(st, SIGBUS , buf, buflen); | |
2354 print_signal_handler(st, SIGFPE , buf, buflen); | |
2355 print_signal_handler(st, SIGPIPE, buf, buflen); | |
2356 print_signal_handler(st, SIGXFSZ, buf, buflen); | |
2357 print_signal_handler(st, SIGILL , buf, buflen); | |
2358 print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen); | |
2359 print_signal_handler(st, ASYNC_SIGNAL, buf, buflen); | |
2360 print_signal_handler(st, BREAK_SIGNAL, buf, buflen); | |
2361 print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen); | |
2362 print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); | |
2363 print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen); | |
2364 print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen); | |
2365 print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen); | |
2366 } | |
2367 | |
2368 static char saved_jvm_path[MAXPATHLEN] = { 0 }; | |
2369 | |
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2370 // Find the full path to the current module, libjvm.so |
0 | 2371 void os::jvm_path(char *buf, jint buflen) { |
2372 // Error checking. | |
2373 if (buflen < MAXPATHLEN) { | |
2374 assert(false, "must use a large-enough buffer"); | |
2375 buf[0] = '\0'; | |
2376 return; | |
2377 } | |
2378 // Lazy resolve the path to current module. | |
2379 if (saved_jvm_path[0] != 0) { | |
2380 strcpy(buf, saved_jvm_path); | |
2381 return; | |
2382 } | |
2383 | |
2384 Dl_info dlinfo; | |
2385 int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo); | |
2386 assert(ret != 0, "cannot locate libjvm"); | |
11092
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10986
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|
2387 if (ret != 0 && dlinfo.dli_fname != NULL) { |
59b052799158
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|
2388 realpath((char *)dlinfo.dli_fname, buf); |
59b052799158
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|
2389 } else { |
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|
2390 buf[0] = '\0'; |
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8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
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|
2391 return; |
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|
2392 } |
0 | 2393 |
14317
b59507f713e0
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diff
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|
2394 if (Arguments::sun_java_launcher_is_altjvm()) { |
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|
2395 // Support for the java launcher's '-XXaltjvm=<path>' option. Typical |
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diff
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|
2396 // value for buf is "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". |
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diff
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|
2397 // If "/jre/lib/" appears at the right place in the string, then |
b59507f713e0
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rdurbin
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diff
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|
2398 // assume we are installed in a JDK and we're done. Otherwise, check |
b59507f713e0
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|
2399 // for a JAVA_HOME environment variable and fix up the path so it |
b59507f713e0
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|
2400 // looks like libjvm.so is installed there (append a fake suffix |
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|
2401 // hotspot/libjvm.so). |
0 | 2402 const char *p = buf + strlen(buf) - 1; |
2403 for (int count = 0; p > buf && count < 5; ++count) { | |
2404 for (--p; p > buf && *p != '/'; --p) | |
2405 /* empty */ ; | |
2406 } | |
2407 | |
2408 if (strncmp(p, "/jre/lib/", 9) != 0) { | |
2409 // Look for JAVA_HOME in the environment. | |
2410 char* java_home_var = ::getenv("JAVA_HOME"); | |
2411 if (java_home_var != NULL && java_home_var[0] != 0) { | |
2412 char cpu_arch[12]; | |
1642 | 2413 char* jrelib_p; |
2414 int len; | |
0 | 2415 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
2416 #ifdef _LP64 | |
2417 // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9. | |
2418 if (strcmp(cpu_arch, "sparc") == 0) { | |
2419 strcat(cpu_arch, "v9"); | |
2420 } else if (strcmp(cpu_arch, "i386") == 0) { | |
2421 strcpy(cpu_arch, "amd64"); | |
2422 } | |
2423 #endif | |
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|
2424 // Check the current module name "libjvm.so". |
0 | 2425 p = strrchr(buf, '/'); |
2426 assert(strstr(p, "/libjvm") == p, "invalid library name"); | |
2427 | |
2428 realpath(java_home_var, buf); | |
1642 | 2429 // determine if this is a legacy image or modules image |
2430 // modules image doesn't have "jre" subdirectory | |
2431 len = strlen(buf); | |
2432 jrelib_p = buf + len; | |
2433 snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch); | |
2434 if (0 != access(buf, F_OK)) { | |
2435 snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch); | |
2436 } | |
2437 | |
0 | 2438 if (0 == access(buf, F_OK)) { |
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parents:
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diff
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|
2439 // Use current module name "libjvm.so" |
1642 | 2440 len = strlen(buf); |
7456
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7206
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changeset
|
2441 snprintf(buf + len, buflen-len, "/hotspot/libjvm.so"); |
0 | 2442 } else { |
2443 // Go back to path of .so | |
2444 realpath((char *)dlinfo.dli_fname, buf); | |
2445 } | |
2446 } | |
2447 } | |
2448 } | |
2449 | |
2450 strcpy(saved_jvm_path, buf); | |
2451 } | |
2452 | |
2453 | |
2454 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
2455 // no prefix required, not even "_" | |
2456 } | |
2457 | |
2458 | |
2459 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
2460 // no suffix required | |
2461 } | |
2462 | |
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|
2463 // This method is a copy of JDK's sysGetLastErrorString |
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diff
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|
2464 // from src/solaris/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2465 |
828eafbd85cc
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diff
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|
2466 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
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|
2467 |
828eafbd85cc
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diff
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|
2468 if (errno == 0) return 0; |
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diff
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|
2469 |
828eafbd85cc
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diff
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|
2470 const char *s = ::strerror(errno); |
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6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2471 size_t n = ::strlen(s); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2472 if (n >= len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2473 n = len - 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2474 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2475 ::strncpy(buf, s, n); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2476 buf[n] = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2477 return n; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2478 } |
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|
2479 |
0 | 2480 |
2481 // sun.misc.Signal | |
2482 | |
2483 extern "C" { | |
2484 static void UserHandler(int sig, void *siginfo, void *context) { | |
2485 // Ctrl-C is pressed during error reporting, likely because the error | |
2486 // handler fails to abort. Let VM die immediately. | |
2487 if (sig == SIGINT && is_error_reported()) { | |
2488 os::die(); | |
2489 } | |
2490 | |
2491 os::signal_notify(sig); | |
2492 // We do not need to reinstate the signal handler each time... | |
2493 } | |
2494 } | |
2495 | |
2496 void* os::user_handler() { | |
2497 return CAST_FROM_FN_PTR(void*, UserHandler); | |
2498 } | |
2499 | |
10405 | 2500 class Semaphore : public StackObj { |
2501 public: | |
2502 Semaphore(); | |
2503 ~Semaphore(); | |
2504 void signal(); | |
2505 void wait(); | |
2506 bool trywait(); | |
2507 bool timedwait(unsigned int sec, int nsec); | |
2508 private: | |
2509 sema_t _semaphore; | |
2510 }; | |
2511 | |
2512 | |
2513 Semaphore::Semaphore() { | |
2514 sema_init(&_semaphore, 0, NULL, NULL); | |
2515 } | |
2516 | |
2517 Semaphore::~Semaphore() { | |
2518 sema_destroy(&_semaphore); | |
2519 } | |
2520 | |
2521 void Semaphore::signal() { | |
2522 sema_post(&_semaphore); | |
2523 } | |
2524 | |
2525 void Semaphore::wait() { | |
2526 sema_wait(&_semaphore); | |
2527 } | |
2528 | |
2529 bool Semaphore::trywait() { | |
2530 return sema_trywait(&_semaphore) == 0; | |
2531 } | |
2532 | |
2533 bool Semaphore::timedwait(unsigned int sec, int nsec) { | |
2534 struct timespec ts; | |
2535 unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec); | |
2536 | |
2537 while (1) { | |
2538 int result = sema_timedwait(&_semaphore, &ts); | |
2539 if (result == 0) { | |
2540 return true; | |
2541 } else if (errno == EINTR) { | |
2542 continue; | |
2543 } else if (errno == ETIME) { | |
2544 return false; | |
2545 } else { | |
2546 return false; | |
2547 } | |
2548 } | |
2549 } | |
2550 | |
0 | 2551 extern "C" { |
2552 typedef void (*sa_handler_t)(int); | |
2553 typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); | |
2554 } | |
2555 | |
2556 void* os::signal(int signal_number, void* handler) { | |
2557 struct sigaction sigAct, oldSigAct; | |
2558 sigfillset(&(sigAct.sa_mask)); | |
2559 sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND; | |
2560 sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); | |
2561 | |
2562 if (sigaction(signal_number, &sigAct, &oldSigAct)) | |
2563 // -1 means registration failed | |
2564 return (void *)-1; | |
2565 | |
2566 return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); | |
2567 } | |
2568 | |
2569 void os::signal_raise(int signal_number) { | |
2570 raise(signal_number); | |
2571 } | |
2572 | |
2573 /* | |
2574 * The following code is moved from os.cpp for making this | |
2575 * code platform specific, which it is by its very nature. | |
2576 */ | |
2577 | |
2578 // a counter for each possible signal value | |
2579 static int Sigexit = 0; | |
2580 static int Maxlibjsigsigs; | |
2581 static jint *pending_signals = NULL; | |
2582 static int *preinstalled_sigs = NULL; | |
2583 static struct sigaction *chainedsigactions = NULL; | |
2584 static sema_t sig_sem; | |
2585 typedef int (*version_getting_t)(); | |
2586 version_getting_t os::Solaris::get_libjsig_version = NULL; | |
2587 static int libjsigversion = NULL; | |
2588 | |
2589 int os::sigexitnum_pd() { | |
2590 assert(Sigexit > 0, "signal memory not yet initialized"); | |
2591 return Sigexit; | |
2592 } | |
2593 | |
2594 void os::Solaris::init_signal_mem() { | |
2595 // Initialize signal structures | |
2596 Maxsignum = SIGRTMAX; | |
2597 Sigexit = Maxsignum+1; | |
2598 assert(Maxsignum >0, "Unable to obtain max signal number"); | |
2599 | |
2600 Maxlibjsigsigs = Maxsignum; | |
2601 | |
2602 // pending_signals has one int per signal | |
2603 // The additional signal is for SIGEXIT - exit signal to signal_thread | |
6197 | 2604 pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1), mtInternal); |
0 | 2605 memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1))); |
2606 | |
2607 if (UseSignalChaining) { | |
2608 chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction) | |
6197 | 2609 * (Maxsignum + 1), mtInternal); |
0 | 2610 memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1))); |
6197 | 2611 preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal); |
0 | 2612 memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1))); |
2613 } | |
6197 | 2614 ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ), mtInternal); |
0 | 2615 memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1)); |
2616 } | |
2617 | |
2618 void os::signal_init_pd() { | |
2619 int ret; | |
2620 | |
2621 ret = ::sema_init(&sig_sem, 0, NULL, NULL); | |
2622 assert(ret == 0, "sema_init() failed"); | |
2623 } | |
2624 | |
2625 void os::signal_notify(int signal_number) { | |
2626 int ret; | |
2627 | |
2628 Atomic::inc(&pending_signals[signal_number]); | |
2629 ret = ::sema_post(&sig_sem); | |
2630 assert(ret == 0, "sema_post() failed"); | |
2631 } | |
2632 | |
2633 static int check_pending_signals(bool wait_for_signal) { | |
2634 int ret; | |
2635 while (true) { | |
2636 for (int i = 0; i < Sigexit + 1; i++) { | |
2637 jint n = pending_signals[i]; | |
2638 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
2639 return i; | |
2640 } | |
2641 } | |
2642 if (!wait_for_signal) { | |
2643 return -1; | |
2644 } | |
2645 JavaThread *thread = JavaThread::current(); | |
2646 ThreadBlockInVM tbivm(thread); | |
2647 | |
2648 bool threadIsSuspended; | |
2649 do { | |
2650 thread->set_suspend_equivalent(); | |
2651 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
2652 while((ret = ::sema_wait(&sig_sem)) == EINTR) | |
2653 ; | |
2654 assert(ret == 0, "sema_wait() failed"); | |
2655 | |
2656 // were we externally suspended while we were waiting? | |
2657 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
2658 if (threadIsSuspended) { | |
2659 // | |
2660 // The semaphore has been incremented, but while we were waiting | |
2661 // another thread suspended us. We don't want to continue running | |
2662 // while suspended because that would surprise the thread that | |
2663 // suspended us. | |
2664 // | |
2665 ret = ::sema_post(&sig_sem); | |
2666 assert(ret == 0, "sema_post() failed"); | |
2667 | |
2668 thread->java_suspend_self(); | |
2669 } | |
2670 } while (threadIsSuspended); | |
2671 } | |
2672 } | |
2673 | |
2674 int os::signal_lookup() { | |
2675 return check_pending_signals(false); | |
2676 } | |
2677 | |
2678 int os::signal_wait() { | |
2679 return check_pending_signals(true); | |
2680 } | |
2681 | |
2682 //////////////////////////////////////////////////////////////////////////////// | |
2683 // Virtual Memory | |
2684 | |
2685 static int page_size = -1; | |
2686 | |
2687 // The mmap MAP_ALIGN flag is supported on Solaris 9 and later. init_2() will | |
2688 // clear this var if support is not available. | |
2689 static bool has_map_align = true; | |
2690 | |
2691 int os::vm_page_size() { | |
2692 assert(page_size != -1, "must call os::init"); | |
2693 return page_size; | |
2694 } | |
2695 | |
2696 // Solaris allocates memory by pages. | |
2697 int os::vm_allocation_granularity() { | |
2698 assert(page_size != -1, "must call os::init"); | |
2699 return page_size; | |
2700 } | |
2701 | |
10969
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2702 static bool recoverable_mmap_error(int err) { |
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2703 // See if the error is one we can let the caller handle. This |
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2704 // list of errno values comes from the Solaris mmap(2) man page. |
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2705 switch (err) { |
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2706 case EBADF: |
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2707 case EINVAL: |
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2708 case ENOTSUP: |
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2709 // let the caller deal with these errors |
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2710 return true; |
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2711 |
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2712 default: |
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2713 // Any remaining errors on this OS can cause our reserved mapping |
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2714 // to be lost. That can cause confusion where different data |
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2715 // structures think they have the same memory mapped. The worst |
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2716 // scenario is if both the VM and a library think they have the |
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2717 // same memory mapped. |
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2718 return false; |
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2719 } |
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2720 } |
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2721 |
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2722 static void warn_fail_commit_memory(char* addr, size_t bytes, bool exec, |
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2723 int err) { |
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2724 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
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2725 ", %d) failed; error='%s' (errno=%d)", addr, bytes, exec, |
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2726 strerror(err), err); |
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2727 } |
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2728 |
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2729 static void warn_fail_commit_memory(char* addr, size_t bytes, |
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2730 size_t alignment_hint, bool exec, |
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2731 int err) { |
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2732 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
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2733 ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, bytes, |
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2734 alignment_hint, exec, strerror(err), err); |
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2735 } |
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2736 |
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2737 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, bool exec) { |
656 | 2738 int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
0 | 2739 size_t size = bytes; |
3885 | 2740 char *res = Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, prot); |
2741 if (res != NULL) { | |
2742 if (UseNUMAInterleaving) { | |
2743 numa_make_global(addr, bytes); | |
2744 } | |
10969
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2745 return 0; |
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2746 } |
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2747 |
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2748 int err = errno; // save errno from mmap() call in mmap_chunk() |
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2749 |
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2750 if (!recoverable_mmap_error(err)) { |
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2751 warn_fail_commit_memory(addr, bytes, exec, err); |
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2752 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, "committing reserved memory."); |
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2753 } |
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2754 |
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2755 return err; |
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2756 } |
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2757 |
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2758 bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) { |
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2759 return Solaris::commit_memory_impl(addr, bytes, exec) == 0; |
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|
2760 } |
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|
2761 |
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|
2762 void os::pd_commit_memory_or_exit(char* addr, size_t bytes, bool exec, |
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|
2763 const char* mesg) { |
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|
2764 assert(mesg != NULL, "mesg must be specified"); |
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|
2765 int err = os::Solaris::commit_memory_impl(addr, bytes, exec); |
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|
2766 if (err != 0) { |
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|
2767 // the caller wants all commit errors to exit with the specified mesg: |
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|
2768 warn_fail_commit_memory(addr, bytes, exec, err); |
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|
2769 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, mesg); |
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|
2770 } |
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|
2771 } |
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|
2772 |
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|
2773 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, |
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|
2774 size_t alignment_hint, bool exec) { |
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|
2775 int err = Solaris::commit_memory_impl(addr, bytes, exec); |
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|
2776 if (err == 0) { |
11111
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|
2777 if (UseLargePages && (alignment_hint > (size_t)vm_page_size())) { |
0 | 2778 // If the large page size has been set and the VM |
2779 // is using large pages, use the large page size | |
2780 // if it is smaller than the alignment hint. This is | |
2781 // a case where the VM wants to use a larger alignment size | |
2782 // for its own reasons but still want to use large pages | |
2783 // (which is what matters to setting the mpss range. | |
2784 size_t page_size = 0; | |
2785 if (large_page_size() < alignment_hint) { | |
2786 assert(UseLargePages, "Expected to be here for large page use only"); | |
2787 page_size = large_page_size(); | |
2788 } else { | |
2789 // If the alignment hint is less than the large page | |
2790 // size, the VM wants a particular alignment (thus the hint) | |
2791 // for internal reasons. Try to set the mpss range using | |
2792 // the alignment_hint. | |
2793 page_size = alignment_hint; | |
2794 } | |
2795 // Since this is a hint, ignore any failures. | |
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changeset
|
2796 (void)Solaris::setup_large_pages(addr, bytes, page_size); |
0 | 2797 } |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2798 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2799 return err; |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2800 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2801 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2802 bool os::pd_commit_memory(char* addr, size_t bytes, size_t alignment_hint, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2803 bool exec) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2804 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
|
2805 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2806 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2807 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
|
2808 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
|
2809 const char* mesg) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2810 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
|
2811 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
|
2812 if (err != 0) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2813 // 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
|
2814 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
|
2815 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
|
2816 } |
0 | 2817 } |
2818 | |
2819 // Uncommit the pages in a specified region. | |
6197 | 2820 void os::pd_free_memory(char* addr, size_t bytes, size_t alignment_hint) { |
0 | 2821 if (madvise(addr, bytes, MADV_FREE) < 0) { |
2822 debug_only(warning("MADV_FREE failed.")); | |
2823 return; | |
2824 } | |
2825 } | |
2826 | |
6197 | 2827 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
|
2828 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
|
2829 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2830 |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2831 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
|
2832 return os::uncommit_memory(addr, size); |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2833 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2834 |
0 | 2835 // Change the page size in a given range. |
6197 | 2836 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { |
0 | 2837 assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned."); |
2838 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
|
2839 if (UseLargePages) { |
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
2840 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
|
2841 } |
0 | 2842 } |
2843 | |
2844 // Tell the OS to make the range local to the first-touching LWP | |
141 | 2845 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { |
0 | 2846 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); |
2847 if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) { | |
2848 debug_only(warning("MADV_ACCESS_LWP failed.")); | |
2849 } | |
2850 } | |
2851 | |
2852 // Tell the OS that this range would be accessed from different LWPs. | |
2853 void os::numa_make_global(char *addr, size_t bytes) { | |
2854 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); | |
2855 if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) { | |
2856 debug_only(warning("MADV_ACCESS_MANY failed.")); | |
2857 } | |
2858 } | |
2859 | |
2860 // Get the number of the locality groups. | |
2861 size_t os::numa_get_groups_num() { | |
2862 size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie()); | |
2863 return n != -1 ? n : 1; | |
2864 } | |
2865 | |
2866 // Get a list of leaf locality groups. A leaf lgroup is group that | |
2867 // doesn't have any children. Typical leaf group is a CPU or a CPU/memory | |
2868 // board. An LWP is assigned to one of these groups upon creation. | |
2869 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
2870 if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) { | |
2871 ids[0] = 0; | |
2872 return 1; | |
2873 } | |
2874 int result_size = 0, top = 1, bottom = 0, cur = 0; | |
2875 for (int k = 0; k < size; k++) { | |
2876 int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur], | |
2877 (Solaris::lgrp_id_t*)&ids[top], size - top); | |
2878 if (r == -1) { | |
2879 ids[0] = 0; | |
2880 return 1; | |
2881 } | |
2882 if (!r) { | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2883 // That's a leaf node. |
0 | 2884 assert (bottom <= cur, "Sanity check"); |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2885 // Check if the node has memory |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2886 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
|
2887 NULL, 0, LGRP_RSRC_MEM) > 0) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2888 ids[bottom++] = ids[cur]; |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2889 } |
0 | 2890 } |
2891 top += r; | |
2892 cur++; | |
2893 } | |
268
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2894 if (bottom == 0) { |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2895 // 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
|
2896 // Assume UMA architecture. |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2897 ids[0] = 0; |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2898 return 1; |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2899 } |
0 | 2900 return bottom; |
2901 } | |
2902 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
144
diff
changeset
|
2903 // Detect the topology change. Typically happens during CPU plugging-unplugging. |
0 | 2904 bool os::numa_topology_changed() { |
2905 int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie()); | |
2906 if (is_stale != -1 && is_stale) { | |
2907 Solaris::lgrp_fini(Solaris::lgrp_cookie()); | |
2908 Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER); | |
2909 assert(c != 0, "Failure to initialize LGRP API"); | |
2910 Solaris::set_lgrp_cookie(c); | |
2911 return true; | |
2912 } | |
2913 return false; | |
2914 } | |
2915 | |
2916 // Get the group id of the current LWP. | |
2917 int os::numa_get_group_id() { | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2918 int lgrp_id = Solaris::lgrp_home(P_LWPID, P_MYID); |
0 | 2919 if (lgrp_id == -1) { |
2920 return 0; | |
2921 } | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2922 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
|
2923 int *ids = (int*)alloca(size * sizeof(int)); |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2924 |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2925 // 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
|
2926 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
|
2927 (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
|
2928 if (r <= 0) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2929 return 0; |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2930 } |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2931 return ids[os::random() % r]; |
0 | 2932 } |
2933 | |
2934 // Request information about the page. | |
2935 bool os::get_page_info(char *start, page_info* info) { | |
2936 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
2937 uint64_t addr = (uintptr_t)start; | |
2938 uint64_t outdata[2]; | |
2939 uint_t validity = 0; | |
2940 | |
2941 if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) { | |
2942 return false; | |
2943 } | |
2944 | |
2945 info->size = 0; | |
2946 info->lgrp_id = -1; | |
2947 | |
2948 if ((validity & 1) != 0) { | |
2949 if ((validity & 2) != 0) { | |
2950 info->lgrp_id = outdata[0]; | |
2951 } | |
2952 if ((validity & 4) != 0) { | |
2953 info->size = outdata[1]; | |
2954 } | |
2955 return true; | |
2956 } | |
2957 return false; | |
2958 } | |
2959 | |
2960 // Scan the pages from start to end until a page different than | |
2961 // the one described in the info parameter is encountered. | |
2962 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
2963 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
2964 const size_t types = sizeof(info_types) / sizeof(info_types[0]); | |
14328 | 2965 uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT + 1]; |
0 | 2966 uint_t validity[MAX_MEMINFO_CNT]; |
2967 | |
2968 size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size); | |
2969 uint64_t p = (uint64_t)start; | |
2970 while (p < (uint64_t)end) { | |
2971 addrs[0] = p; | |
2972 size_t addrs_count = 1; | |
8739
ca9580859cf4
8004697: SIGSEGV on Solaris sparc with -XX:+UseNUMA
stefank
parents:
8067
diff
changeset
|
2973 while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] + page_size < (uint64_t)end) { |
0 | 2974 addrs[addrs_count] = addrs[addrs_count - 1] + page_size; |
2975 addrs_count++; | |
2976 } | |
2977 | |
2978 if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) { | |
2979 return NULL; | |
2980 } | |
2981 | |
2982 size_t i = 0; | |
2983 for (; i < addrs_count; i++) { | |
2984 if ((validity[i] & 1) != 0) { | |
2985 if ((validity[i] & 4) != 0) { | |
2986 if (outdata[types * i + 1] != page_expected->size) { | |
2987 break; | |
2988 } | |
2989 } else | |
2990 if (page_expected->size != 0) { | |
2991 break; | |
2992 } | |
2993 | |
2994 if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) { | |
2995 if (outdata[types * i] != page_expected->lgrp_id) { | |
2996 break; | |
2997 } | |
2998 } | |
2999 } else { | |
3000 return NULL; | |
3001 } | |
3002 } | |
3003 | |
14328 | 3004 if (i < addrs_count) { |
0 | 3005 if ((validity[i] & 2) != 0) { |
3006 page_found->lgrp_id = outdata[types * i]; | |
3007 } else { | |
3008 page_found->lgrp_id = -1; | |
3009 } | |
3010 if ((validity[i] & 4) != 0) { | |
3011 page_found->size = outdata[types * i + 1]; | |
3012 } else { | |
3013 page_found->size = 0; | |
3014 } | |
3015 return (char*)addrs[i]; | |
3016 } | |
3017 | |
3018 p = addrs[addrs_count - 1] + page_size; | |
3019 } | |
3020 return end; | |
3021 } | |
3022 | |
6197 | 3023 bool os::pd_uncommit_memory(char* addr, size_t bytes) { |
0 | 3024 size_t size = bytes; |
3025 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
3026 // uncommitted page. Otherwise, the read/write might succeed if we | |
3027 // have enough swap space to back the physical page. | |
3028 return | |
3029 NULL != Solaris::mmap_chunk(addr, size, | |
3030 MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, | |
3031 PROT_NONE); | |
3032 } | |
3033 | |
3034 char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) { | |
3035 char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0); | |
3036 | |
3037 if (b == MAP_FAILED) { | |
3038 return NULL; | |
3039 } | |
3040 return b; | |
3041 } | |
3042 | |
60
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3043 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
|
3044 char* addr = requested_addr; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3045 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
|
3046 |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3047 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
|
3048 |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3049 if (fixed) { |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3050 flags |= MAP_FIXED; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3051 } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) { |
0 | 3052 flags |= MAP_ALIGN; |
3053 addr = (char*) alignment_hint; | |
3054 } | |
3055 | |
3056 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
3057 // uncommitted page. Otherwise, the read/write might succeed if we | |
3058 // 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
|
3059 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
|
3060 } |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3061 |
6197 | 3062 char* os::pd_reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) { |
60
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3063 char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL)); |
0 | 3064 |
3065 guarantee(requested_addr == NULL || requested_addr == addr, | |
3066 "OS failed to return requested mmap address."); | |
3067 return addr; | |
3068 } | |
3069 | |
3070 // Reserve memory at an arbitrary address, only if that area is | |
3071 // available (and not reserved for something else). | |
3072 | |
6197 | 3073 char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
0 | 3074 const int max_tries = 10; |
3075 char* base[max_tries]; | |
3076 size_t size[max_tries]; | |
3077 | |
3078 // Solaris adds a gap between mmap'ed regions. The size of the gap | |
3079 // is dependent on the requested size and the MMU. Our initial gap | |
3080 // value here is just a guess and will be corrected later. | |
3081 bool had_top_overlap = false; | |
3082 bool have_adjusted_gap = false; | |
3083 size_t gap = 0x400000; | |
3084 | |
3085 // Assert only that the size is a multiple of the page size, since | |
3086 // that's all that mmap requires, and since that's all we really know | |
3087 // about at this low abstraction level. If we need higher alignment, | |
3088 // we can either pass an alignment to this method or verify alignment | |
3089 // in one of the methods further up the call chain. See bug 5044738. | |
3090 assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); | |
3091 | |
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3092 // Since snv_84, Solaris attempts to honor the address hint - see 5003415. |
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3093 // Give it a try, if the kernel honors the hint we can return immediately. |
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3094 char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false); |
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3095 |
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3096 volatile int err = errno; |
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3097 if (addr == requested_addr) { |
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3098 return addr; |
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3099 } else if (addr != NULL) { |
6882
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3100 pd_unmap_memory(addr, bytes); |
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3101 } |
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3102 |
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3103 if (PrintMiscellaneous && Verbose) { |
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3104 char buf[256]; |
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3105 buf[0] = '\0'; |
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3106 if (addr == NULL) { |
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3107 jio_snprintf(buf, sizeof(buf), ": %s", strerror(err)); |
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3108 } |
2080 | 3109 warning("attempt_reserve_memory_at: couldn't reserve " SIZE_FORMAT " bytes at " |
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3110 PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT |
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3111 "%s", bytes, requested_addr, addr, buf); |
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3112 } |
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3113 |
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3114 // Address hint method didn't work. Fall back to the old method. |
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3115 // In theory, once SNV becomes our oldest supported platform, this |
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3116 // code will no longer be needed. |
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3117 // |
0 | 3118 // Repeatedly allocate blocks until the block is allocated at the |
3119 // right spot. Give up after max_tries. | |
3120 int i; | |
3121 for (i = 0; i < max_tries; ++i) { | |
3122 base[i] = reserve_memory(bytes); | |
3123 | |
3124 if (base[i] != NULL) { | |
3125 // Is this the block we wanted? | |
3126 if (base[i] == requested_addr) { | |
3127 size[i] = bytes; | |
3128 break; | |
3129 } | |
3130 | |
3131 // check that the gap value is right | |
3132 if (had_top_overlap && !have_adjusted_gap) { | |
3133 size_t actual_gap = base[i-1] - base[i] - bytes; | |
3134 if (gap != actual_gap) { | |
3135 // adjust the gap value and retry the last 2 allocations | |
3136 assert(i > 0, "gap adjustment code problem"); | |
3137 have_adjusted_gap = true; // adjust the gap only once, just in case | |
3138 gap = actual_gap; | |
3139 if (PrintMiscellaneous && Verbose) { | |
3140 warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap); | |
3141 } | |
3142 unmap_memory(base[i], bytes); | |
3143 unmap_memory(base[i-1], size[i-1]); | |
3144 i-=2; | |
3145 continue; | |
3146 } | |
3147 } | |
3148 | |
3149 // Does this overlap the block we wanted? Give back the overlapped | |
3150 // parts and try again. | |
3151 // | |
3152 // There is still a bug in this code: if top_overlap == bytes, | |
3153 // the overlap is offset from requested region by the value of gap. | |
3154 // In this case giving back the overlapped part will not work, | |
3155 // because we'll give back the entire block at base[i] and | |
3156 // therefore the subsequent allocation will not generate a new gap. | |
3157 // This could be fixed with a new algorithm that used larger | |
3158 // or variable size chunks to find the requested region - | |
3159 // but such a change would introduce additional complications. | |
3160 // It's rare enough that the planets align for this bug, | |
3161 // so we'll just wait for a fix for 6204603/5003415 which | |
3162 // will provide a mmap flag to allow us to avoid this business. | |
3163 | |
3164 size_t top_overlap = requested_addr + (bytes + gap) - base[i]; | |
3165 if (top_overlap >= 0 && top_overlap < bytes) { | |
3166 had_top_overlap = true; | |
3167 unmap_memory(base[i], top_overlap); | |
3168 base[i] += top_overlap; | |
3169 size[i] = bytes - top_overlap; | |
3170 } else { | |
3171 size_t bottom_overlap = base[i] + bytes - requested_addr; | |
3172 if (bottom_overlap >= 0 && bottom_overlap < bytes) { | |
3173 if (PrintMiscellaneous && Verbose && bottom_overlap == 0) { | |
3174 warning("attempt_reserve_memory_at: possible alignment bug"); | |
3175 } | |
3176 unmap_memory(requested_addr, bottom_overlap); | |
3177 size[i] = bytes - bottom_overlap; | |
3178 } else { | |
3179 size[i] = bytes; | |
3180 } | |
3181 } | |
3182 } | |
3183 } | |
3184 | |
3185 // Give back the unused reserved pieces. | |
3186 | |
3187 for (int j = 0; j < i; ++j) { | |
3188 if (base[j] != NULL) { | |
3189 unmap_memory(base[j], size[j]); | |
3190 } | |
3191 } | |
3192 | |
3193 return (i < max_tries) ? requested_addr : NULL; | |
3194 } | |
3195 | |
6197 | 3196 bool os::pd_release_memory(char* addr, size_t bytes) { |
0 | 3197 size_t size = bytes; |
3198 return munmap(addr, size) == 0; | |
3199 } | |
3200 | |
3201 static bool solaris_mprotect(char* addr, size_t bytes, int prot) { | |
3202 assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()), | |
3203 "addr must be page aligned"); | |
3204 int retVal = mprotect(addr, bytes, prot); | |
3205 return retVal == 0; | |
3206 } | |
3207 | |
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3208 // Protect memory (Used to pass readonly pages through |
0 | 3209 // JNI GetArray<type>Elements with empty arrays.) |
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3210 // Also, used for serialization page and for compressed oops null pointer |
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3211 // checking. |
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3212 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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3213 bool is_committed) { |
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3214 unsigned int p = 0; |
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3215 switch (prot) { |
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3216 case MEM_PROT_NONE: p = PROT_NONE; break; |
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3217 case MEM_PROT_READ: p = PROT_READ; break; |
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3218 case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
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3219 case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; |
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3220 default: |
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3221 ShouldNotReachHere(); |
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3222 } |
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3223 // is_committed is unused. |
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3224 return solaris_mprotect(addr, bytes, p); |
0 | 3225 } |
3226 | |
3227 // guard_memory and unguard_memory only happens within stack guard pages. | |
3228 // Since ISM pertains only to the heap, guard and unguard memory should not | |
3229 /// happen with an ISM region. | |
3230 bool os::guard_memory(char* addr, size_t bytes) { | |
3231 return solaris_mprotect(addr, bytes, PROT_NONE); | |
3232 } | |
3233 | |
3234 bool os::unguard_memory(char* addr, size_t bytes) { | |
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3235 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE); |
0 | 3236 } |
3237 | |
3238 // Large page support | |
3239 static size_t _large_page_size = 0; | |
3240 | |
3241 // Insertion sort for small arrays (descending order). | |
3242 static void insertion_sort_descending(size_t* array, int len) { | |
3243 for (int i = 0; i < len; i++) { | |
3244 size_t val = array[i]; | |
3245 for (size_t key = i; key > 0 && array[key - 1] < val; --key) { | |
3246 size_t tmp = array[key]; | |
3247 array[key] = array[key - 1]; | |
3248 array[key - 1] = tmp; | |
3249 } | |
3250 } | |
3251 } | |
3252 | |
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3253 bool os::Solaris::mpss_sanity_check(bool warn, size_t* page_size) { |
0 | 3254 const unsigned int usable_count = VM_Version::page_size_count(); |
3255 if (usable_count == 1) { | |
3256 return false; | |
3257 } | |
3258 | |
3859 | 3259 // Find the right getpagesizes interface. When solaris 11 is the minimum |
3260 // build platform, getpagesizes() (without the '2') can be called directly. | |
3261 typedef int (*gps_t)(size_t[], int); | |
3262 gps_t gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes2")); | |
3263 if (gps_func == NULL) { | |
3264 gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes")); | |
3265 if (gps_func == NULL) { | |
3266 if (warn) { | |
3267 warning("MPSS is not supported by the operating system."); | |
3268 } | |
3269 return false; | |
3270 } | |
3271 } | |
3272 | |
0 | 3273 // Fill the array of page sizes. |
3859 | 3274 int n = (*gps_func)(_page_sizes, page_sizes_max); |
0 | 3275 assert(n > 0, "Solaris bug?"); |
3859 | 3276 |
0 | 3277 if (n == page_sizes_max) { |
3278 // Add a sentinel value (necessary only if the array was completely filled | |
3279 // since it is static (zeroed at initialization)). | |
3280 _page_sizes[--n] = 0; | |
3281 DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");) | |
3282 } | |
3283 assert(_page_sizes[n] == 0, "missing sentinel"); | |
3859 | 3284 trace_page_sizes("available page sizes", _page_sizes, n); |
0 | 3285 |
3286 if (n == 1) return false; // Only one page size available. | |
3287 | |
3288 // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and | |
3289 // select up to usable_count elements. First sort the array, find the first | |
3290 // acceptable value, then copy the usable sizes to the top of the array and | |
3291 // trim the rest. Make sure to include the default page size :-). | |
3292 // | |
3293 // A better policy could get rid of the 4M limit by taking the sizes of the | |
3294 // important VM memory regions (java heap and possibly the code cache) into | |
3295 // account. | |
3296 insertion_sort_descending(_page_sizes, n); | |
3297 const size_t size_limit = | |
3298 FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes; | |
3299 int beg; | |
3300 for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ; | |
3301 const int end = MIN2((int)usable_count, n) - 1; | |
3302 for (int cur = 0; cur < end; ++cur, ++beg) { | |
3303 _page_sizes[cur] = _page_sizes[beg]; | |
3304 } | |
3305 _page_sizes[end] = vm_page_size(); | |
3306 _page_sizes[end + 1] = 0; | |
3307 | |
3308 if (_page_sizes[end] > _page_sizes[end - 1]) { | |
3309 // Default page size is not the smallest; sort again. | |
3310 insertion_sort_descending(_page_sizes, end + 1); | |
3311 } | |
3312 *page_size = _page_sizes[0]; | |
3313 | |
3859 | 3314 trace_page_sizes("usable page sizes", _page_sizes, end + 1); |
0 | 3315 return true; |
3316 } | |
3317 | |
3318
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3318 void os::large_page_init() { |
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3319 if (UseLargePages) { |
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3320 // print a warning if any large page related flag is specified on command line |
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3321 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || |
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3322 !FLAG_IS_DEFAULT(LargePageSizeInBytes); |
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3323 |
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3324 UseLargePages = Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size); |
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3325 } |
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3326 } |
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3327 |
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3328 bool os::Solaris::setup_large_pages(caddr_t start, size_t bytes, size_t align) { |
0 | 3329 // Signal to OS that we want large pages for addresses |
3330 // from addr, addr + bytes | |
3331 struct memcntl_mha mpss_struct; | |
3332 mpss_struct.mha_cmd = MHA_MAPSIZE_VA; | |
3333 mpss_struct.mha_pagesize = align; | |
3334 mpss_struct.mha_flags = 0; | |
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3335 // Upon successful completion, memcntl() returns 0 |
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3336 if (memcntl(start, bytes, MC_HAT_ADVISE, (caddr_t) &mpss_struct, 0, 0)) { |
0 | 3337 debug_only(warning("Attempt to use MPSS failed.")); |
3338 return false; | |
3339 } | |
3340 return true; | |
3341 } | |
3342 | |
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3343 char* os::reserve_memory_special(size_t size, size_t alignment, char* addr, bool exec) { |
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3344 fatal("os::reserve_memory_special should not be called on Solaris."); |
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3345 return NULL; |
0 | 3346 } |
3347 | |
3348 bool os::release_memory_special(char* base, size_t bytes) { | |
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3349 fatal("os::release_memory_special should not be called on Solaris."); |
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3350 return false; |
0 | 3351 } |
3352 | |
3353 size_t os::large_page_size() { | |
3354 return _large_page_size; | |
3355 } | |
3356 | |
3357 // MPSS allows application to commit large page memory on demand; with ISM | |
3358 // the entire memory region must be allocated as shared memory. | |
3359 bool os::can_commit_large_page_memory() { | |
11111
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8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
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10986
diff
changeset
|
3360 return true; |
0 | 3361 } |
3362 | |
79
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
61
diff
changeset
|
3363 bool os::can_execute_large_page_memory() { |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
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parents:
10986
diff
changeset
|
3364 return true; |
79
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
61
diff
changeset
|
3365 } |
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
61
diff
changeset
|
3366 |
0 | 3367 // Read calls from inside the vm need to perform state transitions |
3368 size_t os::read(int fd, void *buf, unsigned int nBytes) { | |
3369 INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); | |
3370 } | |
3371 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3372 size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3373 INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3374 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3375 |
14291
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
14286
diff
changeset
|
3376 void os::naked_short_sleep(jlong ms) { |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
14286
diff
changeset
|
3377 assert(ms < 1000, "Un-interruptable sleep, short time use only"); |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
14286
diff
changeset
|
3378 |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
14286
diff
changeset
|
3379 // usleep is deprecated and removed from POSIX, in favour of nanosleep, but |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
14286
diff
changeset
|
3380 // Solaris requires -lrt for this. |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
14286
diff
changeset
|
3381 usleep((ms * 1000)); |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
dsimms
parents:
14286
diff
changeset
|
3382 |
5944dba4badc
8028280: ParkEvent leak when running modified runThese which only loads classes
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14286
diff
changeset
|
3383 return; |
0 | 3384 } |
3385 | |
3386 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
3387 void os::infinite_sleep() { | |
3388 while (true) { // sleep forever ... | |
3389 ::sleep(100); // ... 100 seconds at a time | |
3390 } | |
3391 } | |
3392 | |
3393 // Used to convert frequent JVM_Yield() to nops | |
3394 bool os::dont_yield() { | |
3395 if (DontYieldALot) { | |
3396 static hrtime_t last_time = 0; | |
3397 hrtime_t diff = getTimeNanos() - last_time; | |
3398 | |
3399 if (diff < DontYieldALotInterval * 1000000) | |
3400 return true; | |
3401 | |
3402 last_time += diff; | |
3403 | |
3404 return false; | |
3405 } | |
3406 else { | |
3407 return false; | |
3408 } | |
3409 } | |
3410 | |
3411 // Caveat: Solaris os::yield() causes a thread-state transition whereas | |
3412 // the linux and win32 implementations do not. This should be checked. | |
3413 | |
3414 void os::yield() { | |
3415 // Yields to all threads with same or greater priority | |
3416 os::sleep(Thread::current(), 0, false); | |
3417 } | |
3418 | |
3419 // Note that yield semantics are defined by the scheduling class to which | |
3420 // the thread currently belongs. Typically, yield will _not yield to | |
3421 // other equal or higher priority threads that reside on the dispatch queues | |
3422 // of other CPUs. | |
3423 | |
3424 os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; } | |
3425 | |
3426 | |
3427 // On Solaris we found that yield_all doesn't always yield to all other threads. | |
3428 // There have been cases where there is a thread ready to execute but it doesn't | |
3429 // get an lwp as the VM thread continues to spin with sleeps of 1 millisecond. | |
3430 // The 1 millisecond wait doesn't seem long enough for the kernel to issue a | |
3431 // SIGWAITING signal which will cause a new lwp to be created. So we count the | |
3432 // number of times yield_all is called in the one loop and increase the sleep | |
3433 // time after 8 attempts. If this fails too we increase the concurrency level | |
3434 // so that the starving thread would get an lwp | |
3435 | |
3436 void os::yield_all(int attempts) { | |
3437 // Yields to all threads, including threads with lower priorities | |
3438 if (attempts == 0) { | |
3439 os::sleep(Thread::current(), 1, false); | |
3440 } else { | |
3441 int iterations = attempts % 30; | |
3442 if (iterations == 0 && !os::Solaris::T2_libthread()) { | |
3443 // thr_setconcurrency and _getconcurrency make sense only under T1. | |
3444 int noofLWPS = thr_getconcurrency(); | |
3445 if (noofLWPS < (Threads::number_of_threads() + 2)) { | |
3446 thr_setconcurrency(thr_getconcurrency() + 1); | |
3447 } | |
3448 } else if (iterations < 25) { | |
3449 os::sleep(Thread::current(), 1, false); | |
3450 } else { | |
3451 os::sleep(Thread::current(), 10, false); | |
3452 } | |
3453 } | |
3454 } | |
3455 | |
3456 // Called from the tight loops to possibly influence time-sharing heuristics | |
3457 void os::loop_breaker(int attempts) { | |
3458 os::yield_all(attempts); | |
3459 } | |
3460 | |
3461 | |
3462 // Interface for setting lwp priorities. If we are using T2 libthread, | |
3463 // which forces the use of BoundThreads or we manually set UseBoundThreads, | |
3464 // all of our threads will be assigned to real lwp's. Using the thr_setprio | |
3465 // function is meaningless in this mode so we must adjust the real lwp's priority | |
3466 // The routines below implement the getting and setting of lwp priorities. | |
3467 // | |
3468 // Note: There are three priority scales used on Solaris. Java priotities | |
3469 // which range from 1 to 10, libthread "thr_setprio" scale which range | |
3470 // from 0 to 127, and the current scheduling class of the process we | |
3471 // are running in. This is typically from -60 to +60. | |
3472 // The setting of the lwp priorities in done after a call to thr_setprio | |
3473 // so Java priorities are mapped to libthread priorities and we map from | |
3474 // the latter to lwp priorities. We don't keep priorities stored in | |
3475 // Java priorities since some of our worker threads want to set priorities | |
3476 // higher than all Java threads. | |
3477 // | |
3478 // For related information: | |
3479 // (1) man -s 2 priocntl | |
3480 // (2) man -s 4 priocntl | |
3481 // (3) man dispadmin | |
3482 // = librt.so | |
3483 // = libthread/common/rtsched.c - thrp_setlwpprio(). | |
3484 // = ps -cL <pid> ... to validate priority. | |
3485 // = sched_get_priority_min and _max | |
3486 // pthread_create | |
3487 // sched_setparam | |
3488 // pthread_setschedparam | |
3489 // | |
3490 // Assumptions: | |
3491 // + We assume that all threads in the process belong to the same | |
3492 // scheduling class. IE. an homogenous process. | |
3493 // + Must be root or in IA group to change change "interactive" attribute. | |
3494 // Priocntl() will fail silently. The only indication of failure is when | |
3495 // we read-back the value and notice that it hasn't changed. | |
3496 // + Interactive threads enter the runq at the head, non-interactive at the tail. | |
3497 // + For RT, change timeslice as well. Invariant: | |
3498 // constant "priority integral" | |
3499 // Konst == TimeSlice * (60-Priority) | |
3500 // Given a priority, compute appropriate timeslice. | |
3501 // + Higher numerical values have higher priority. | |
3502 | |
3503 // sched class attributes | |
3504 typedef struct { | |
3505 int schedPolicy; // classID | |
3506 int maxPrio; | |
3507 int minPrio; | |
3508 } SchedInfo; | |
3509 | |
3510 | |
4854
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4803
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changeset
|
3511 static SchedInfo tsLimits, iaLimits, rtLimits, fxLimits; |
0 | 3512 |
3513 #ifdef ASSERT | |
3514 static int ReadBackValidate = 1; | |
3515 #endif | |
3516 static int myClass = 0; | |
3517 static int myMin = 0; | |
3518 static int myMax = 0; | |
3519 static int myCur = 0; | |
3520 static bool priocntl_enable = false; | |
3521 | |
4854
de268c8a8075
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4803
diff
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|
3522 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
|
3523 static int java_MaxPriority_to_os_priority = 0; // Saved mapping |
0 | 3524 |
3525 | |
3526 // lwp_priocntl_init | |
3527 // | |
3528 // Try to determine the priority scale for our process. | |
3529 // | |
3530 // Return errno or 0 if OK. | |
3531 // | |
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10986
diff
changeset
|
3532 static int lwp_priocntl_init () { |
0 | 3533 int rslt; |
3534 pcinfo_t ClassInfo; | |
3535 pcparms_t ParmInfo; | |
3536 int i; | |
3537 | |
3538 if (!UseThreadPriorities) return 0; | |
3539 | |
3540 // We are using Bound threads, we need to determine our priority ranges | |
3541 if (os::Solaris::T2_libthread() || UseBoundThreads) { | |
3542 // If ThreadPriorityPolicy is 1, switch tables | |
3543 if (ThreadPriorityPolicy == 1) { | |
4854
de268c8a8075
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phh
parents:
4803
diff
changeset
|
3544 for (i = 0 ; i < CriticalPriority+1; i++) |
0 | 3545 os::java_to_os_priority[i] = prio_policy1[i]; |
3546 } | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3547 if (UseCriticalJavaThreadPriority) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3548 // 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
parents:
4803
diff
changeset
|
3549 // 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
parents:
4803
diff
changeset
|
3550 // 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
changeset
|
3551 // use critical priority fails. |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3552 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
parents:
4803
diff
changeset
|
3553 // Set negative to distinguish from other priorities |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3554 os::java_to_os_priority[MaxPriority] = -criticalPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3555 } |
0 | 3556 } |
3557 // Not using Bound Threads, set to ThreadPolicy 1 | |
3558 else { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3559 for ( i = 0 ; i < CriticalPriority+1; i++ ) { |
0 | 3560 os::java_to_os_priority[i] = prio_policy1[i]; |
3561 } | |
3562 return 0; | |
3563 } | |
3564 | |
3565 // Get IDs for a set of well-known scheduling classes. | |
3566 // TODO-FIXME: GETCLINFO returns the current # of classes in the | |
3567 // the system. We should have a loop that iterates over the | |
3568 // classID values, which are known to be "small" integers. | |
3569 | |
3570 strcpy(ClassInfo.pc_clname, "TS"); | |
3571 ClassInfo.pc_cid = -1; | |
11111
dec841e0c9aa
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anoll
parents:
10986
diff
changeset
|
3572 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3573 if (rslt < 0) return errno; |
3574 assert(ClassInfo.pc_cid != -1, "cid for TS class is -1"); | |
3575 tsLimits.schedPolicy = ClassInfo.pc_cid; | |
3576 tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri; | |
3577 tsLimits.minPrio = -tsLimits.maxPrio; | |
3578 | |
3579 strcpy(ClassInfo.pc_clname, "IA"); | |
3580 ClassInfo.pc_cid = -1; | |
11111
dec841e0c9aa
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anoll
parents:
10986
diff
changeset
|
3581 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3582 if (rslt < 0) return errno; |
3583 assert(ClassInfo.pc_cid != -1, "cid for IA class is -1"); | |
3584 iaLimits.schedPolicy = ClassInfo.pc_cid; | |
3585 iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri; | |
3586 iaLimits.minPrio = -iaLimits.maxPrio; | |
3587 | |
3588 strcpy(ClassInfo.pc_clname, "RT"); | |
3589 ClassInfo.pc_cid = -1; | |
11111
dec841e0c9aa
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anoll
parents:
10986
diff
changeset
|
3590 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3591 if (rslt < 0) return errno; |
3592 assert(ClassInfo.pc_cid != -1, "cid for RT class is -1"); | |
3593 rtLimits.schedPolicy = ClassInfo.pc_cid; | |
3594 rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri; | |
3595 rtLimits.minPrio = 0; | |
3596 | |
4854
de268c8a8075
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phh
parents:
4803
diff
changeset
|
3597 strcpy(ClassInfo.pc_clname, "FX"); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3598 ClassInfo.pc_cid = -1; |
11111
dec841e0c9aa
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anoll
parents:
10986
diff
changeset
|
3599 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
phh
parents:
4803
diff
changeset
|
3600 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
|
3601 assert(ClassInfo.pc_cid != -1, "cid for FX class is -1"); |
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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|
3602 fxLimits.schedPolicy = ClassInfo.pc_cid; |
de268c8a8075
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phh
parents:
4803
diff
changeset
|
3603 fxLimits.maxPrio = ((fxinfo_t*)ClassInfo.pc_clinfo)->fx_maxupri; |
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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|
3604 fxLimits.minPrio = 0; |
0 | 3605 |
3606 // Query our "current" scheduling class. | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3607 // This will normally be IA, TS or, rarely, FX or RT. |
de268c8a8075
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phh
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4803
diff
changeset
|
3608 memset(&ParmInfo, 0, sizeof(ParmInfo)); |
0 | 3609 ParmInfo.pc_cid = PC_CLNULL; |
11111
dec841e0c9aa
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anoll
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10986
diff
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|
3610 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
phh
parents:
4803
diff
changeset
|
3611 if (rslt < 0) return errno; |
0 | 3612 myClass = ParmInfo.pc_cid; |
3613 | |
3614 // We now know our scheduling classId, get specific information | |
4854
de268c8a8075
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phh
parents:
4803
diff
changeset
|
3615 // about the class. |
0 | 3616 ClassInfo.pc_cid = myClass; |
3617 ClassInfo.pc_clname[0] = 0; | |
11111
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8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
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10986
diff
changeset
|
3618 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
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4803
diff
changeset
|
3619 if (rslt < 0) return errno; |
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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|
3620 |
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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|
3621 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3622 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
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|
3623 } |
0 | 3624 |
3625 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
3626 ParmInfo.pc_cid = PC_CLNULL; | |
11111
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10986
diff
changeset
|
3627 rslt = priocntl(P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
0 | 3628 if (rslt < 0) return errno; |
3629 | |
3630 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
3631 myMin = rtLimits.minPrio; | |
3632 myMax = rtLimits.maxPrio; | |
3633 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
3634 iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms; | |
3635 myMin = iaLimits.minPrio; | |
3636 myMax = iaLimits.maxPrio; | |
3637 myMax = MIN2(myMax, (int)iaInfo->ia_uprilim); // clamp - restrict | |
3638 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
3639 tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms; | |
3640 myMin = tsLimits.minPrio; | |
3641 myMax = tsLimits.maxPrio; | |
3642 myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict | |
4854
de268c8a8075
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4803
diff
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|
3643 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3644 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
|
3645 myMin = fxLimits.minPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3646 myMax = fxLimits.maxPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3647 myMax = MIN2(myMax, (int)fxInfo->fx_uprilim); // clamp - restrict |
0 | 3648 } else { |
3649 // No clue - punt | |
3650 if (ThreadPriorityVerbose) | |
3651 tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname); | |
3652 return EINVAL; // no clue, punt | |
3653 } | |
3654 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3655 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3656 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
|
3657 } |
0 | 3658 |
3659 priocntl_enable = true; // Enable changing priorities | |
3660 return 0; | |
3661 } | |
3662 | |
3663 #define IAPRI(x) ((iaparms_t *)((x).pc_clparms)) | |
3664 #define RTPRI(x) ((rtparms_t *)((x).pc_clparms)) | |
3665 #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
|
3666 #define FXPRI(x) ((fxparms_t *)((x).pc_clparms)) |
0 | 3667 |
3668 | |
3669 // scale_to_lwp_priority | |
3670 // | |
3671 // Convert from the libthread "thr_setprio" scale to our current | |
3672 // lwp scheduling class scale. | |
3673 // | |
3674 static | |
3675 int scale_to_lwp_priority (int rMin, int rMax, int x) | |
3676 { | |
3677 int v; | |
3678 | |
3679 if (x == 127) return rMax; // avoid round-down | |
3680 v = (((x*(rMax-rMin)))/128)+rMin; | |
3681 return v; | |
3682 } | |
3683 | |
3684 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3685 // set_lwp_class_and_priority |
0 | 3686 // |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3687 // 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
|
3688 // be made when using bound threads (T2 threads are bound by default). |
0 | 3689 // |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3690 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
|
3691 int newPrio, int new_class, bool scale) { |
0 | 3692 int rslt; |
3693 int Actual, Expected, prv; | |
3694 pcparms_t ParmInfo; // for GET-SET | |
3695 #ifdef ASSERT | |
3696 pcparms_t ReadBack; // for readback | |
3697 #endif | |
3698 | |
3699 // Set priority via PC_GETPARMS, update, PC_SETPARMS | |
3700 // Query current values. | |
3701 // TODO: accelerate this by eliminating the PC_GETPARMS call. | |
3702 // Cache "pcparms_t" in global ParmCache. | |
3703 // TODO: elide set-to-same-value | |
3704 | |
3705 // If something went wrong on init, don't change priorities. | |
3706 if ( !priocntl_enable ) { | |
3707 if (ThreadPriorityVerbose) | |
3708 tty->print_cr("Trying to set priority but init failed, ignoring"); | |
3709 return EINVAL; | |
3710 } | |
3711 | |
3712 // If lwp hasn't started yet, just return | |
3713 // the _start routine will call us again. | |
3714 if ( lwpid <= 0 ) { | |
3715 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3716 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:
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diff
changeset
|
3717 INTPTR_FORMAT " to %d, lwpid not set", |
0 | 3718 ThreadID, newPrio); |
3719 } | |
3720 return 0; | |
3721 } | |
3722 | |
3723 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3724 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
|
3725 INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ", |
0 | 3726 ThreadID, lwpid, newPrio); |
3727 } | |
3728 | |
3729 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
3730 ParmInfo.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3731 rslt = priocntl(P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo); |
0 | 3732 if (rslt < 0) return errno; |
3733 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3734 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
|
3735 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
|
3736 |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3737 if (new_class == rtLimits.schedPolicy) { |
0 | 3738 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
|
3739 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
|
3740 rtLimits.maxPrio, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3741 : newPrio; |
0 | 3742 rtInfo->rt_tqsecs = RT_NOCHANGE; |
3743 rtInfo->rt_tqnsecs = RT_NOCHANGE; | |
3744 if (ThreadPriorityVerbose) { | |
3745 tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri); | |
3746 } | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3747 } 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
|
3748 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
|
3749 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
|
3750 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
|
3751 ? (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
|
3752 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
|
3753 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3754 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3755 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
|
3756 ? IA_NOCHANGE : (pri_t)iaLimits.maxPrio; |
0 | 3757 iaInfo->ia_mode = IA_NOCHANGE; |
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("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
|
3760 iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri); |
0 | 3761 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3762 } 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
|
3763 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
|
3764 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
|
3765 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
|
3766 ? (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
|
3767 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
|
3768 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3769 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3770 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
|
3771 ? TS_NOCHANGE : (pri_t)tsLimits.maxPrio; |
0 | 3772 if (ThreadPriorityVerbose) { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3773 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
|
3774 tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri); |
0 | 3775 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3776 } 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
|
3777 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
|
3778 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
|
3779 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
|
3780 ? (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
|
3781 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
|
3782 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3783 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3784 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
|
3785 ? 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
|
3786 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
|
3787 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
|
3788 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3789 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
|
3790 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
|
3791 } |
0 | 3792 } else { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3793 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3794 tty->print_cr("Unknown new scheduling class %d\n", new_class); |
0 | 3795 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3796 return EINVAL; // no clue, punt |
0 | 3797 } |
3798 | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3799 rslt = priocntl(P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo); |
0 | 3800 if (ThreadPriorityVerbose && rslt) { |
3801 tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno); | |
3802 } | |
3803 if (rslt < 0) return errno; | |
3804 | |
3805 #ifdef ASSERT | |
3806 // Sanity check: read back what we just attempted to set. | |
3807 // In theory it could have changed in the interim ... | |
3808 // | |
3809 // The priocntl system call is tricky. | |
3810 // Sometimes it'll validate the priority value argument and | |
3811 // return EINVAL if unhappy. At other times it fails silently. | |
3812 // Readbacks are prudent. | |
3813 | |
3814 if (!ReadBackValidate) return 0; | |
3815 | |
3816 memset(&ReadBack, 0, sizeof(pcparms_t)); | |
3817 ReadBack.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3818 rslt = priocntl(P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack); |
0 | 3819 assert(rslt >= 0, "priocntl failed"); |
3820 Actual = Expected = 0xBAD; | |
3821 assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match"); | |
3822 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
3823 Actual = RTPRI(ReadBack)->rt_pri; | |
3824 Expected = RTPRI(ParmInfo)->rt_pri; | |
3825 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
3826 Actual = IAPRI(ReadBack)->ia_upri; | |
3827 Expected = IAPRI(ParmInfo)->ia_upri; | |
3828 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
3829 Actual = TSPRI(ReadBack)->ts_upri; | |
3830 Expected = TSPRI(ParmInfo)->ts_upri; | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3831 } 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
|
3832 Actual = FXPRI(ReadBack)->fx_upri; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3833 Expected = FXPRI(ParmInfo)->fx_upri; |
0 | 3834 } else { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3835 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3836 tty->print_cr("set_lwp_class_and_priority: unexpected class in readback: %d\n", |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3837 ParmInfo.pc_cid); |
0 | 3838 } |
3839 } | |
3840 | |
3841 if (Actual != Expected) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3842 if (ThreadPriorityVerbose) { |
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3843 tty->print_cr ("set_lwp_class_and_priority(%d %d) Class=%d: actual=%d vs expected=%d\n", |
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3844 lwpid, newPrio, ReadBack.pc_cid, Actual, Expected); |
0 | 3845 } |
3846 } | |
3847 #endif | |
3848 | |
3849 return 0; | |
3850 } | |
3851 | |
3852 // Solaris only gives access to 128 real priorities at a time, | |
3853 // so we expand Java's ten to fill this range. This would be better | |
3854 // if we dynamically adjusted relative priorities. | |
3855 // | |
3856 // The ThreadPriorityPolicy option allows us to select 2 different | |
3857 // priority scales. | |
3858 // | |
3859 // ThreadPriorityPolicy=0 | |
3860 // Since the Solaris' default priority is MaximumPriority, we do not | |
3861 // set a priority lower than Max unless a priority lower than | |
3862 // NormPriority is requested. | |
3863 // | |
3864 // ThreadPriorityPolicy=1 | |
3865 // This mode causes the priority table to get filled with | |
3866 // linear values. NormPriority get's mapped to 50% of the | |
3867 // Maximum priority an so on. This will cause VM threads | |
3868 // to get unfair treatment against other Solaris processes | |
3869 // which do not explicitly alter their thread priorities. | |
3870 // | |
3871 | |
4854
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3872 int os::java_to_os_priority[CriticalPriority + 1] = { |
0 | 3873 -99999, // 0 Entry should never be used |
3874 | |
3875 0, // 1 MinPriority | |
3876 32, // 2 | |
3877 64, // 3 | |
3878 | |
3879 96, // 4 | |
3880 127, // 5 NormPriority | |
3881 127, // 6 | |
3882 | |
3883 127, // 7 | |
3884 127, // 8 | |
3885 127, // 9 NearMaxPriority | |
3886 | |
4854
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3887 127, // 10 MaxPriority |
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3888 |
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3889 -criticalPrio // 11 CriticalPriority |
0 | 3890 }; |
3891 | |
3892 OSReturn os::set_native_priority(Thread* thread, int newpri) { | |
4854
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3893 OSThread* osthread = thread->osthread(); |
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3894 |
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3895 // Save requested priority in case the thread hasn't been started |
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3896 osthread->set_native_priority(newpri); |
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3897 |
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3898 // Check for critical priority request |
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3899 bool fxcritical = false; |
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3900 if (newpri == -criticalPrio) { |
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3901 fxcritical = true; |
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3902 newpri = criticalPrio; |
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3903 } |
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3904 |
0 | 3905 assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping"); |
4854
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3906 if (!UseThreadPriorities) return OS_OK; |
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3907 |
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3908 int status = 0; |
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3909 |
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3910 if (!fxcritical) { |
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3911 // Use thr_setprio only if we have a priority that thr_setprio understands |
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3912 status = thr_setprio(thread->osthread()->thread_id(), newpri); |
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3913 } |
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3914 |
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3915 if (os::Solaris::T2_libthread() || |
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3916 (UseBoundThreads && osthread->is_vm_created())) { |
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3917 int lwp_status = |
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3918 set_lwp_class_and_priority(osthread->thread_id(), |
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3919 osthread->lwp_id(), |
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3920 newpri, |
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3921 fxcritical ? fxLimits.schedPolicy : myClass, |
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3922 !fxcritical); |
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3923 if (lwp_status != 0 && fxcritical) { |
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3924 // Try again, this time without changing the scheduling class |
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3925 newpri = java_MaxPriority_to_os_priority; |
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3926 lwp_status = set_lwp_class_and_priority(osthread->thread_id(), |
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3927 osthread->lwp_id(), |
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|
3928 newpri, myClass, false); |
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3929 } |
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3930 status |= lwp_status; |
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3931 } |
0 | 3932 return (status == 0) ? OS_OK : OS_ERR; |
3933 } | |
3934 | |
3935 | |
3936 OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) { | |
3937 int p; | |
3938 if ( !UseThreadPriorities ) { | |
3939 *priority_ptr = NormalPriority; | |
3940 return OS_OK; | |
3941 } | |
3942 int status = thr_getprio(thread->osthread()->thread_id(), &p); | |
3943 if (status != 0) { | |
3944 return OS_ERR; | |
3945 } | |
3946 *priority_ptr = p; | |
3947 return OS_OK; | |
3948 } | |
3949 | |
3950 | |
3951 // Hint to the underlying OS that a task switch would not be good. | |
3952 // Void return because it's a hint and can fail. | |
3953 void os::hint_no_preempt() { | |
3954 schedctl_start(schedctl_init()); | |
3955 } | |
3956 | |
10405 | 3957 static void resume_clear_context(OSThread *osthread) { |
3958 osthread->set_ucontext(NULL); | |
3959 } | |
3960 | |
3961 static void suspend_save_context(OSThread *osthread, ucontext_t* context) { | |
3962 osthread->set_ucontext(context); | |
3963 } | |
3964 | |
3965 static Semaphore sr_semaphore; | |
3966 | |
3967 void os::Solaris::SR_handler(Thread* thread, ucontext_t* uc) { | |
3968 // Save and restore errno to avoid confusing native code with EINTR | |
3969 // after sigsuspend. | |
3970 int old_errno = errno; | |
3971 | |
3972 OSThread* osthread = thread->osthread(); | |
3973 assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread"); | |
3974 | |
3975 os::SuspendResume::State current = osthread->sr.state(); | |
3976 if (current == os::SuspendResume::SR_SUSPEND_REQUEST) { | |
3977 suspend_save_context(osthread, uc); | |
3978 | |
3979 // attempt to switch the state, we assume we had a SUSPEND_REQUEST | |
3980 os::SuspendResume::State state = osthread->sr.suspended(); | |
3981 if (state == os::SuspendResume::SR_SUSPENDED) { | |
3982 sigset_t suspend_set; // signals for sigsuspend() | |
3983 | |
3984 // get current set of blocked signals and unblock resume signal | |
3985 thr_sigsetmask(SIG_BLOCK, NULL, &suspend_set); | |
3986 sigdelset(&suspend_set, os::Solaris::SIGasync()); | |
3987 | |
3988 sr_semaphore.signal(); | |
3989 // wait here until we are resumed | |
3990 while (1) { | |
3991 sigsuspend(&suspend_set); | |
3992 | |
3993 os::SuspendResume::State result = osthread->sr.running(); | |
3994 if (result == os::SuspendResume::SR_RUNNING) { | |
3995 sr_semaphore.signal(); | |
3996 break; | |
3997 } | |
3998 } | |
3999 | |
4000 } else if (state == os::SuspendResume::SR_RUNNING) { | |
4001 // request was cancelled, continue | |
4002 } else { | |
4003 ShouldNotReachHere(); | |
4004 } | |
4005 | |
4006 resume_clear_context(osthread); | |
4007 } else if (current == os::SuspendResume::SR_RUNNING) { | |
4008 // request was cancelled, continue | |
4009 } else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4010 // ignore | |
4011 } else { | |
4012 // ignore | |
4013 } | |
4014 | |
4015 errno = old_errno; | |
4016 } | |
4017 | |
0 | 4018 void os::print_statistics() { |
4019 } | |
4020 | |
4021 int os::message_box(const char* title, const char* message) { | |
4022 int i; | |
4023 fdStream err(defaultStream::error_fd()); | |
4024 for (i = 0; i < 78; i++) err.print_raw("="); | |
4025 err.cr(); | |
4026 err.print_raw_cr(title); | |
4027 for (i = 0; i < 78; i++) err.print_raw("-"); | |
4028 err.cr(); | |
4029 err.print_raw_cr(message); | |
4030 for (i = 0; i < 78; i++) err.print_raw("="); | |
4031 err.cr(); | |
4032 | |
4033 char buf[16]; | |
4034 // Prevent process from exiting upon "read error" without consuming all CPU | |
4035 while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } | |
4036 | |
4037 return buf[0] == 'y' || buf[0] == 'Y'; | |
4038 } | |
4039 | |
10405 | 4040 static int sr_notify(OSThread* osthread) { |
4041 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGasync()); | |
4042 assert_status(status == 0, status, "thr_kill"); | |
4043 return status; | |
4044 } | |
4045 | |
4046 // "Randomly" selected value for how long we want to spin | |
4047 // before bailing out on suspending a thread, also how often | |
4048 // we send a signal to a thread we want to resume | |
4049 static const int RANDOMLY_LARGE_INTEGER = 1000000; | |
4050 static const int RANDOMLY_LARGE_INTEGER2 = 100; | |
4051 | |
4052 static bool do_suspend(OSThread* osthread) { | |
4053 assert(osthread->sr.is_running(), "thread should be running"); | |
4054 assert(!sr_semaphore.trywait(), "semaphore has invalid state"); | |
4055 | |
4056 // mark as suspended and send signal | |
4057 if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) { | |
4058 // failed to switch, state wasn't running? | |
4059 ShouldNotReachHere(); | |
4060 return false; | |
4061 } | |
4062 | |
4063 if (sr_notify(osthread) != 0) { | |
4064 ShouldNotReachHere(); | |
4065 } | |
4066 | |
4067 // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED | |
4068 while (true) { | |
4069 if (sr_semaphore.timedwait(0, 2000 * NANOSECS_PER_MILLISEC)) { | |
4070 break; | |
4071 } else { | |
4072 // timeout | |
4073 os::SuspendResume::State cancelled = osthread->sr.cancel_suspend(); | |
4074 if (cancelled == os::SuspendResume::SR_RUNNING) { | |
4075 return false; | |
4076 } else if (cancelled == os::SuspendResume::SR_SUSPENDED) { | |
4077 // make sure that we consume the signal on the semaphore as well | |
4078 sr_semaphore.wait(); | |
4079 break; | |
4080 } else { | |
4081 ShouldNotReachHere(); | |
4082 return false; | |
4083 } | |
4084 } | |
4085 } | |
4086 | |
4087 guarantee(osthread->sr.is_suspended(), "Must be suspended"); | |
4088 return true; | |
4089 } | |
4090 | |
4091 static void do_resume(OSThread* osthread) { | |
4092 assert(osthread->sr.is_suspended(), "thread should be suspended"); | |
4093 assert(!sr_semaphore.trywait(), "invalid semaphore state"); | |
4094 | |
4095 if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4096 // failed to switch to WAKEUP_REQUEST | |
4097 ShouldNotReachHere(); | |
4098 return; | |
4099 } | |
4100 | |
4101 while (true) { | |
4102 if (sr_notify(osthread) == 0) { | |
4103 if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { | |
4104 if (osthread->sr.is_running()) { | |
4105 return; | |
4106 } | |
4107 } | |
4108 } else { | |
4109 ShouldNotReachHere(); | |
4110 } | |
4111 } | |
4112 | |
4113 guarantee(osthread->sr.is_running(), "Must be running!"); | |
4114 } | |
4115 | |
4116 void os::SuspendedThreadTask::internal_do_task() { | |
4117 if (do_suspend(_thread->osthread())) { | |
4118 SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext()); | |
4119 do_task(context); | |
4120 do_resume(_thread->osthread()); | |
4121 } | |
4122 } | |
4123 | |
4124 class PcFetcher : public os::SuspendedThreadTask { | |
4125 public: | |
4126 PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {} | |
4127 ExtendedPC result(); | |
4128 protected: | |
4129 void do_task(const os::SuspendedThreadTaskContext& context); | |
4130 private: | |
4131 ExtendedPC _epc; | |
4132 }; | |
4133 | |
4134 ExtendedPC PcFetcher::result() { | |
4135 guarantee(is_done(), "task is not done yet."); | |
4136 return _epc; | |
4137 } | |
4138 | |
4139 void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) { | |
4140 Thread* thread = context.thread(); | |
4141 OSThread* osthread = thread->osthread(); | |
4142 if (osthread->ucontext() != NULL) { | |
4143 _epc = os::Solaris::ucontext_get_pc((ucontext_t *) context.ucontext()); | |
4144 } else { | |
4145 // NULL context is unexpected, double-check this is the VMThread | |
4146 guarantee(thread->is_VM_thread(), "can only be called for VMThread"); | |
4147 } | |
4148 } | |
4149 | |
0 | 4150 // A lightweight implementation that does not suspend the target thread and |
4151 // thus returns only a hint. Used for profiling only! | |
4152 ExtendedPC os::get_thread_pc(Thread* thread) { | |
4153 // Make sure that it is called by the watcher and the Threads lock is owned. | |
4154 assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock"); | |
4155 // For now, is only used to profile the VM Thread | |
4156 assert(thread->is_VM_thread(), "Can only be called for VMThread"); | |
10405 | 4157 PcFetcher fetcher(thread); |
4158 fetcher.run(); | |
4159 return fetcher.result(); | |
0 | 4160 } |
4161 | |
4162 | |
4163 // This does not do anything on Solaris. This is basically a hook for being | |
4164 // able to use structured exception handling (thread-local exception filters) on, e.g., Win32. | |
4165 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) { | |
4166 f(value, method, args, thread); | |
4167 } | |
4168 | |
4169 // This routine may be used by user applications as a "hook" to catch signals. | |
4170 // The user-defined signal handler must pass unrecognized signals to this | |
4171 // routine, and if it returns true (non-zero), then the signal handler must | |
4172 // return immediately. If the flag "abort_if_unrecognized" is true, then this | |
4173 // routine will never retun false (zero), but instead will execute a VM panic | |
4174 // routine kill the process. | |
4175 // | |
4176 // If this routine returns false, it is OK to call it again. This allows | |
4177 // the user-defined signal handler to perform checks either before or after | |
4178 // the VM performs its own checks. Naturally, the user code would be making | |
4179 // a serious error if it tried to handle an exception (such as a null check | |
4180 // or breakpoint) that the VM was generating for its own correct operation. | |
4181 // | |
4182 // This routine may recognize any of the following kinds of signals: | |
4183 // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ, | |
4184 // os::Solaris::SIGasync | |
4185 // It should be consulted by handlers for any of those signals. | |
4186 // It explicitly does not recognize os::Solaris::SIGinterrupt | |
4187 // | |
4188 // The caller of this routine must pass in the three arguments supplied | |
4189 // to the function referred to in the "sa_sigaction" (not the "sa_handler") | |
4190 // field of the structure passed to sigaction(). This routine assumes that | |
4191 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. | |
4192 // | |
4193 // Note that the VM will print warnings if it detects conflicting signal | |
4194 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". | |
4195 // | |
2191 | 4196 extern "C" JNIEXPORT int |
4197 JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, | |
4198 int abort_if_unrecognized); | |
0 | 4199 |
4200 | |
4201 void signalHandler(int sig, siginfo_t* info, void* ucVoid) { | |
8067 | 4202 int orig_errno = errno; // Preserve errno value over signal handler. |
0 | 4203 JVM_handle_solaris_signal(sig, info, ucVoid, true); |
8067 | 4204 errno = orig_errno; |
0 | 4205 } |
4206 | |
4207 /* Do not delete - if guarantee is ever removed, a signal handler (even empty) | |
4208 is needed to provoke threads blocked on IO to return an EINTR | |
4209 Note: this explicitly does NOT call JVM_handle_solaris_signal and | |
4210 does NOT participate in signal chaining due to requirement for | |
4211 NOT setting SA_RESTART to make EINTR work. */ | |
4212 extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) { | |
4213 if (UseSignalChaining) { | |
4214 struct sigaction *actp = os::Solaris::get_chained_signal_action(sig); | |
4215 if (actp && actp->sa_handler) { | |
4216 vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs"); | |
4217 } | |
4218 } | |
4219 } | |
4220 | |
4221 // This boolean allows users to forward their own non-matching signals | |
4222 // to JVM_handle_solaris_signal, harmlessly. | |
4223 bool os::Solaris::signal_handlers_are_installed = false; | |
4224 | |
4225 // For signal-chaining | |
4226 bool os::Solaris::libjsig_is_loaded = false; | |
4227 typedef struct sigaction *(*get_signal_t)(int); | |
4228 get_signal_t os::Solaris::get_signal_action = NULL; | |
4229 | |
4230 struct sigaction* os::Solaris::get_chained_signal_action(int sig) { | |
4231 struct sigaction *actp = NULL; | |
4232 | |
4233 if ((libjsig_is_loaded) && (sig <= Maxlibjsigsigs)) { | |
4234 // Retrieve the old signal handler from libjsig | |
4235 actp = (*get_signal_action)(sig); | |
4236 } | |
4237 if (actp == NULL) { | |
4238 // Retrieve the preinstalled signal handler from jvm | |
4239 actp = get_preinstalled_handler(sig); | |
4240 } | |
4241 | |
4242 return actp; | |
4243 } | |
4244 | |
4245 static bool call_chained_handler(struct sigaction *actp, int sig, | |
4246 siginfo_t *siginfo, void *context) { | |
4247 // Call the old signal handler | |
4248 if (actp->sa_handler == SIG_DFL) { | |
4249 // It's more reasonable to let jvm treat it as an unexpected exception | |
4250 // instead of taking the default action. | |
4251 return false; | |
4252 } else if (actp->sa_handler != SIG_IGN) { | |
4253 if ((actp->sa_flags & SA_NODEFER) == 0) { | |
4254 // automaticlly block the signal | |
4255 sigaddset(&(actp->sa_mask), sig); | |
4256 } | |
4257 | |
4258 sa_handler_t hand; | |
4259 sa_sigaction_t sa; | |
4260 bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; | |
4261 // retrieve the chained handler | |
4262 if (siginfo_flag_set) { | |
4263 sa = actp->sa_sigaction; | |
4264 } else { | |
4265 hand = actp->sa_handler; | |
4266 } | |
4267 | |
4268 if ((actp->sa_flags & SA_RESETHAND) != 0) { | |
4269 actp->sa_handler = SIG_DFL; | |
4270 } | |
4271 | |
4272 // try to honor the signal mask | |
4273 sigset_t oset; | |
4274 thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset); | |
4275 | |
4276 // call into the chained handler | |
4277 if (siginfo_flag_set) { | |
4278 (*sa)(sig, siginfo, context); | |
4279 } else { | |
4280 (*hand)(sig); | |
4281 } | |
4282 | |
4283 // restore the signal mask | |
4284 thr_sigsetmask(SIG_SETMASK, &oset, 0); | |
4285 } | |
4286 // Tell jvm's signal handler the signal is taken care of. | |
4287 return true; | |
4288 } | |
4289 | |
4290 bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) { | |
4291 bool chained = false; | |
4292 // signal-chaining | |
4293 if (UseSignalChaining) { | |
4294 struct sigaction *actp = get_chained_signal_action(sig); | |
4295 if (actp != NULL) { | |
4296 chained = call_chained_handler(actp, sig, siginfo, context); | |
4297 } | |
4298 } | |
4299 return chained; | |
4300 } | |
4301 | |
4302 struct sigaction* os::Solaris::get_preinstalled_handler(int sig) { | |
4303 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4304 if (preinstalled_sigs[sig] != 0) { | |
4305 return &chainedsigactions[sig]; | |
4306 } | |
4307 return NULL; | |
4308 } | |
4309 | |
4310 void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) { | |
4311 | |
4312 assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range"); | |
4313 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4314 chainedsigactions[sig] = oldAct; | |
4315 preinstalled_sigs[sig] = 1; | |
4316 } | |
4317 | |
4318 void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) { | |
4319 // Check for overwrite. | |
4320 struct sigaction oldAct; | |
4321 sigaction(sig, (struct sigaction*)NULL, &oldAct); | |
4322 void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4323 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4324 if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && | |
4325 oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && | |
4326 oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) { | |
4327 if (AllowUserSignalHandlers || !set_installed) { | |
4328 // Do not overwrite; user takes responsibility to forward to us. | |
4329 return; | |
4330 } else if (UseSignalChaining) { | |
4331 if (oktochain) { | |
4332 // save the old handler in jvm | |
4333 save_preinstalled_handler(sig, oldAct); | |
4334 } else { | |
4335 vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs."); | |
4336 } | |
4337 // libjsig also interposes the sigaction() call below and saves the | |
4338 // old sigaction on it own. | |
4339 } else { | |
1490
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changeset
|
4340 fatal(err_msg("Encountered unexpected pre-existing sigaction handler " |
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|
4341 "%#lx for signal %d.", (long)oldhand, sig)); |
0 | 4342 } |
4343 } | |
4344 | |
4345 struct sigaction sigAct; | |
4346 sigfillset(&(sigAct.sa_mask)); | |
4347 sigAct.sa_handler = SIG_DFL; | |
4348 | |
4349 sigAct.sa_sigaction = signalHandler; | |
4350 // Handle SIGSEGV on alternate signal stack if | |
4351 // not using stack banging | |
4352 if (!UseStackBanging && sig == SIGSEGV) { | |
4353 sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK; | |
4354 // Interruptible i/o requires SA_RESTART cleared so EINTR | |
4355 // is returned instead of restarting system calls | |
4356 } else if (sig == os::Solaris::SIGinterrupt()) { | |
4357 sigemptyset(&sigAct.sa_mask); | |
4358 sigAct.sa_handler = NULL; | |
4359 sigAct.sa_flags = SA_SIGINFO; | |
4360 sigAct.sa_sigaction = sigINTRHandler; | |
4361 } else { | |
4362 sigAct.sa_flags = SA_SIGINFO | SA_RESTART; | |
4363 } | |
4364 os::Solaris::set_our_sigflags(sig, sigAct.sa_flags); | |
4365 | |
4366 sigaction(sig, &sigAct, &oldAct); | |
4367 | |
4368 void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4369 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4370 assert(oldhand2 == oldhand, "no concurrent signal handler installation"); | |
4371 } | |
4372 | |
4373 | |
4374 #define DO_SIGNAL_CHECK(sig) \ | |
4375 if (!sigismember(&check_signal_done, sig)) \ | |
4376 os::Solaris::check_signal_handler(sig) | |
4377 | |
4378 // This method is a periodic task to check for misbehaving JNI applications | |
4379 // under CheckJNI, we can add any periodic checks here | |
4380 | |
4381 void os::run_periodic_checks() { | |
4382 // A big source of grief is hijacking virt. addr 0x0 on Solaris, | |
4383 // thereby preventing a NULL checks. | |
4384 if(!check_addr0_done) check_addr0_done = check_addr0(tty); | |
4385 | |
4386 if (check_signals == false) return; | |
4387 | |
4388 // SEGV and BUS if overridden could potentially prevent | |
4389 // generation of hs*.log in the event of a crash, debugging | |
4390 // such a case can be very challenging, so we absolutely | |
4391 // check for the following for a good measure: | |
4392 DO_SIGNAL_CHECK(SIGSEGV); | |
4393 DO_SIGNAL_CHECK(SIGILL); | |
4394 DO_SIGNAL_CHECK(SIGFPE); | |
4395 DO_SIGNAL_CHECK(SIGBUS); | |
4396 DO_SIGNAL_CHECK(SIGPIPE); | |
4397 DO_SIGNAL_CHECK(SIGXFSZ); | |
4398 | |
4399 // ReduceSignalUsage allows the user to override these handlers | |
4400 // see comments at the very top and jvm_solaris.h | |
4401 if (!ReduceSignalUsage) { | |
4402 DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); | |
4403 DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); | |
4404 DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); | |
4405 DO_SIGNAL_CHECK(BREAK_SIGNAL); | |
4406 } | |
4407 | |
4408 // See comments above for using JVM1/JVM2 and UseAltSigs | |
4409 DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt()); | |
4410 DO_SIGNAL_CHECK(os::Solaris::SIGasync()); | |
4411 | |
4412 } | |
4413 | |
4414 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); | |
4415 | |
4416 static os_sigaction_t os_sigaction = NULL; | |
4417 | |
4418 void os::Solaris::check_signal_handler(int sig) { | |
4419 char buf[O_BUFLEN]; | |
4420 address jvmHandler = NULL; | |
4421 | |
4422 struct sigaction act; | |
4423 if (os_sigaction == NULL) { | |
4424 // only trust the default sigaction, in case it has been interposed | |
4425 os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); | |
4426 if (os_sigaction == NULL) return; | |
4427 } | |
4428 | |
4429 os_sigaction(sig, (struct sigaction*)NULL, &act); | |
4430 | |
4431 address thisHandler = (act.sa_flags & SA_SIGINFO) | |
4432 ? CAST_FROM_FN_PTR(address, act.sa_sigaction) | |
4433 : CAST_FROM_FN_PTR(address, act.sa_handler) ; | |
4434 | |
4435 | |
4436 switch(sig) { | |
4437 case SIGSEGV: | |
4438 case SIGBUS: | |
4439 case SIGFPE: | |
4440 case SIGPIPE: | |
4441 case SIGXFSZ: | |
4442 case SIGILL: | |
4443 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4444 break; | |
4445 | |
4446 case SHUTDOWN1_SIGNAL: | |
4447 case SHUTDOWN2_SIGNAL: | |
4448 case SHUTDOWN3_SIGNAL: | |
4449 case BREAK_SIGNAL: | |
4450 jvmHandler = (address)user_handler(); | |
4451 break; | |
4452 | |
4453 default: | |
4454 int intrsig = os::Solaris::SIGinterrupt(); | |
4455 int asynsig = os::Solaris::SIGasync(); | |
4456 | |
4457 if (sig == intrsig) { | |
4458 jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler); | |
4459 } else if (sig == asynsig) { | |
4460 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4461 } else { | |
4462 return; | |
4463 } | |
4464 break; | |
4465 } | |
4466 | |
4467 | |
4468 if (thisHandler != jvmHandler) { | |
4469 tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); | |
4470 tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); | |
4471 tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); | |
4472 // No need to check this sig any longer | |
4473 sigaddset(&check_signal_done, sig); | |
4474 } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
4475 tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); | |
4476 tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig)); | |
4477 tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags); | |
4478 // No need to check this sig any longer | |
4479 sigaddset(&check_signal_done, sig); | |
4480 } | |
4481 | |
4482 // Print all the signal handler state | |
4483 if (sigismember(&check_signal_done, sig)) { | |
4484 print_signal_handlers(tty, buf, O_BUFLEN); | |
4485 } | |
4486 | |
4487 } | |
4488 | |
4489 void os::Solaris::install_signal_handlers() { | |
4490 bool libjsigdone = false; | |
4491 signal_handlers_are_installed = true; | |
4492 | |
4493 // signal-chaining | |
4494 typedef void (*signal_setting_t)(); | |
4495 signal_setting_t begin_signal_setting = NULL; | |
4496 signal_setting_t end_signal_setting = NULL; | |
4497 begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4498 dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); | |
4499 if (begin_signal_setting != NULL) { | |
4500 end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4501 dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); | |
4502 get_signal_action = CAST_TO_FN_PTR(get_signal_t, | |
4503 dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); | |
4504 get_libjsig_version = CAST_TO_FN_PTR(version_getting_t, | |
4505 dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version")); | |
4506 libjsig_is_loaded = true; | |
4507 if (os::Solaris::get_libjsig_version != NULL) { | |
4508 libjsigversion = (*os::Solaris::get_libjsig_version)(); | |
4509 } | |
4510 assert(UseSignalChaining, "should enable signal-chaining"); | |
4511 } | |
4512 if (libjsig_is_loaded) { | |
4513 // Tell libjsig jvm is setting signal handlers | |
4514 (*begin_signal_setting)(); | |
4515 } | |
4516 | |
4517 set_signal_handler(SIGSEGV, true, true); | |
4518 set_signal_handler(SIGPIPE, true, true); | |
4519 set_signal_handler(SIGXFSZ, true, true); | |
4520 set_signal_handler(SIGBUS, true, true); | |
4521 set_signal_handler(SIGILL, true, true); | |
4522 set_signal_handler(SIGFPE, true, true); | |
4523 | |
4524 | |
4525 if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) { | |
4526 | |
4527 // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so | |
4528 // can not register overridable signals which might be > 32 | |
4529 if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) { | |
4530 // Tell libjsig jvm has finished setting signal handlers | |
4531 (*end_signal_setting)(); | |
4532 libjsigdone = true; | |
4533 } | |
4534 } | |
4535 | |
4536 // Never ok to chain our SIGinterrupt | |
4537 set_signal_handler(os::Solaris::SIGinterrupt(), true, false); | |
4538 set_signal_handler(os::Solaris::SIGasync(), true, true); | |
4539 | |
4540 if (libjsig_is_loaded && !libjsigdone) { | |
4541 // Tell libjsig jvm finishes setting signal handlers | |
4542 (*end_signal_setting)(); | |
4543 } | |
4544 | |
4545 // We don't activate signal checker if libjsig is in place, we trust ourselves | |
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4546 // and if UserSignalHandler is installed all bets are off. |
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4547 // Log that signal checking is off only if -verbose:jni is specified. |
0 | 4548 if (CheckJNICalls) { |
4549 if (libjsig_is_loaded) { | |
3956
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4550 if (PrintJNIResolving) { |
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4551 tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); |
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4552 } |
0 | 4553 check_signals = false; |
4554 } | |
4555 if (AllowUserSignalHandlers) { | |
3956
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4556 if (PrintJNIResolving) { |
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4557 tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); |
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|
4558 } |
0 | 4559 check_signals = false; |
4560 } | |
4561 } | |
4562 } | |
4563 | |
4564 | |
4565 void report_error(const char* file_name, int line_no, const char* title, const char* format, ...); | |
4566 | |
4567 const char * signames[] = { | |
4568 "SIG0", | |
4569 "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", | |
4570 "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", | |
4571 "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", | |
4572 "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH", | |
4573 "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT", | |
4574 "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU", | |
4575 "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW", | |
4576 "SIGCANCEL", "SIGLOST" | |
4577 }; | |
4578 | |
4579 const char* os::exception_name(int exception_code, char* buf, size_t size) { | |
4580 if (0 < exception_code && exception_code <= SIGRTMAX) { | |
4581 // signal | |
4582 if (exception_code < sizeof(signames)/sizeof(const char*)) { | |
4583 jio_snprintf(buf, size, "%s", signames[exception_code]); | |
4584 } else { | |
4585 jio_snprintf(buf, size, "SIG%d", exception_code); | |
4586 } | |
4587 return buf; | |
4588 } else { | |
4589 return NULL; | |
4590 } | |
4591 } | |
4592 | |
4593 // (Static) wrappers for the new libthread API | |
4594 int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate; | |
4595 int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate; | |
4596 int_fnP_thread_t_i os::Solaris::_thr_setmutator; | |
4597 int_fnP_thread_t os::Solaris::_thr_suspend_mutator; | |
4598 int_fnP_thread_t os::Solaris::_thr_continue_mutator; | |
4599 | |
641
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|
4600 // (Static) wrapper for getisax(2) call. |
6af0a709d52b
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changeset
|
4601 os::Solaris::getisax_func_t os::Solaris::_getisax = 0; |
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4602 |
0 | 4603 // (Static) wrappers for the liblgrp API |
4604 os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home; | |
4605 os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init; | |
4606 os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini; | |
4607 os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root; | |
4608 os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children; | |
144
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|
4609 os::Solaris::lgrp_resources_func_t os::Solaris::_lgrp_resources; |
0 | 4610 os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps; |
4611 os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale; | |
4612 os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0; | |
4613 | |
4614 // (Static) wrapper for meminfo() call. | |
4615 os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0; | |
4616 | |
641
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4617 static address resolve_symbol_lazy(const char* name) { |
6af0a709d52b
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changeset
|
4618 address addr = (address) dlsym(RTLD_DEFAULT, name); |
0 | 4619 if(addr == NULL) { |
4620 // RTLD_DEFAULT was not defined on some early versions of 2.5.1 | |
4621 addr = (address) dlsym(RTLD_NEXT, name); | |
641
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changeset
|
4622 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
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diff
changeset
|
4623 return addr; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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diff
changeset
|
4624 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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548
diff
changeset
|
4625 |
6af0a709d52b
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diff
changeset
|
4626 static address resolve_symbol(const char* name) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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changeset
|
4627 address addr = resolve_symbol_lazy(name); |
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6812587: Use auxv to determine SPARC hardware features on Solaris
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parents:
548
diff
changeset
|
4628 if(addr == NULL) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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parents:
548
diff
changeset
|
4629 fatal(dlerror()); |
0 | 4630 } |
4631 return addr; | |
4632 } | |
4633 | |
4634 | |
4635 | |
4636 // isT2_libthread() | |
4637 // | |
4638 // Routine to determine if we are currently using the new T2 libthread. | |
4639 // | |
4640 // We determine if we are using T2 by reading /proc/self/lstatus and | |
4641 // looking for a thread with the ASLWP bit set. If we find this status | |
4642 // bit set, we must assume that we are NOT using T2. The T2 team | |
4643 // has approved this algorithm. | |
4644 // | |
4645 // We need to determine if we are running with the new T2 libthread | |
4646 // since setting native thread priorities is handled differently | |
4647 // when using this library. All threads created using T2 are bound | |
4648 // threads. Calling thr_setprio is meaningless in this case. | |
4649 // | |
4650 bool isT2_libthread() { | |
4651 static prheader_t * lwpArray = NULL; | |
4652 static int lwpSize = 0; | |
4653 static int lwpFile = -1; | |
4654 lwpstatus_t * that; | |
4655 char lwpName [128]; | |
4656 bool isT2 = false; | |
4657 | |
4658 #define ADR(x) ((uintptr_t)(x)) | |
4659 #define LWPINDEX(ary,ix) ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1)))) | |
4660 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4661 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
|
4662 if (lwpFile < 0) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4663 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
|
4664 return false; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4665 } |
0 | 4666 lwpSize = 16*1024; |
4667 for (;;) { | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4668 ::lseek64 (lwpFile, 0, SEEK_SET); |
6197 | 4669 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
|
4670 if (::read(lwpFile, lwpArray, lwpSize) < 0) { |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4671 if (ThreadPriorityVerbose) warning("Error reading /proc/self/lstatus\n"); |
0 | 4672 break; |
4673 } | |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4674 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
|
4675 // 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
|
4676 int aslwpcount = 0; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4677 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
|
4678 that = LWPINDEX(lwpArray,i); |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4679 if (that->pr_flags & PR_ASLWP) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4680 aslwpcount++; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4681 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4682 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4683 if (aslwpcount == 0) isT2 = true; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4684 break; |
0 | 4685 } |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4686 lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize; |
6197 | 4687 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); // retry. |
4688 } | |
4689 | |
4690 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4691 ::close (lwpFile); |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4692 if (ThreadPriorityVerbose) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4693 if (isT2) tty->print_cr("We are running with a T2 libthread\n"); |
0 | 4694 else tty->print_cr("We are not running with a T2 libthread\n"); |
4695 } | |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4696 return isT2; |
0 | 4697 } |
4698 | |
4699 | |
4700 void os::Solaris::libthread_init() { | |
4701 address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators"); | |
4702 | |
4703 // Determine if we are running with the new T2 libthread | |
4704 os::Solaris::set_T2_libthread(isT2_libthread()); | |
4705 | |
4706 lwp_priocntl_init(); | |
4707 | |
4708 // RTLD_DEFAULT was not defined on some early versions of 5.5.1 | |
4709 if(func == NULL) { | |
4710 func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators"); | |
4711 // Guarantee that this VM is running on an new enough OS (5.6 or | |
4712 // later) that it will have a new enough libthread.so. | |
4713 guarantee(func != NULL, "libthread.so is too old."); | |
4714 } | |
4715 | |
4716 // Initialize the new libthread getstate API wrappers | |
4717 func = resolve_symbol("thr_getstate"); | |
4718 os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func)); | |
4719 | |
4720 func = resolve_symbol("thr_setstate"); | |
4721 os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func)); | |
4722 | |
4723 func = resolve_symbol("thr_setmutator"); | |
4724 os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func)); | |
4725 | |
4726 func = resolve_symbol("thr_suspend_mutator"); | |
4727 os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
4728 | |
4729 func = resolve_symbol("thr_continue_mutator"); | |
4730 os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
4731 | |
4732 int size; | |
4733 void (*handler_info_func)(address *, int *); | |
4734 handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo")); | |
4735 handler_info_func(&handler_start, &size); | |
4736 handler_end = handler_start + size; | |
4737 } | |
4738 | |
4739 | |
4740 int_fnP_mutex_tP os::Solaris::_mutex_lock; | |
4741 int_fnP_mutex_tP os::Solaris::_mutex_trylock; | |
4742 int_fnP_mutex_tP os::Solaris::_mutex_unlock; | |
4743 int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init; | |
4744 int_fnP_mutex_tP os::Solaris::_mutex_destroy; | |
4745 int os::Solaris::_mutex_scope = USYNC_THREAD; | |
4746 | |
4747 int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait; | |
4748 int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait; | |
4749 int_fnP_cond_tP os::Solaris::_cond_signal; | |
4750 int_fnP_cond_tP os::Solaris::_cond_broadcast; | |
4751 int_fnP_cond_tP_i_vP os::Solaris::_cond_init; | |
4752 int_fnP_cond_tP os::Solaris::_cond_destroy; | |
4753 int os::Solaris::_cond_scope = USYNC_THREAD; | |
4754 | |
4755 void os::Solaris::synchronization_init() { | |
4756 if(UseLWPSynchronization) { | |
4757 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock"))); | |
4758 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock"))); | |
4759 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock"))); | |
4760 os::Solaris::set_mutex_init(lwp_mutex_init); | |
4761 os::Solaris::set_mutex_destroy(lwp_mutex_destroy); | |
4762 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
4763 | |
4764 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait"))); | |
4765 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait"))); | |
4766 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal"))); | |
4767 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast"))); | |
4768 os::Solaris::set_cond_init(lwp_cond_init); | |
4769 os::Solaris::set_cond_destroy(lwp_cond_destroy); | |
4770 os::Solaris::set_cond_scope(USYNC_THREAD); | |
4771 } | |
4772 else { | |
4773 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
4774 os::Solaris::set_cond_scope(USYNC_THREAD); | |
4775 | |
4776 if(UsePthreads) { | |
4777 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock"))); | |
4778 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock"))); | |
4779 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock"))); | |
4780 os::Solaris::set_mutex_init(pthread_mutex_default_init); | |
4781 os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy"))); | |
4782 | |
4783 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait"))); | |
4784 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait"))); | |
4785 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal"))); | |
4786 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast"))); | |
4787 os::Solaris::set_cond_init(pthread_cond_default_init); | |
4788 os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy"))); | |
4789 } | |
4790 else { | |
4791 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock"))); | |
4792 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock"))); | |
4793 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock"))); | |
4794 os::Solaris::set_mutex_init(::mutex_init); | |
4795 os::Solaris::set_mutex_destroy(::mutex_destroy); | |
4796 | |
4797 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait"))); | |
4798 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait"))); | |
4799 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal"))); | |
4800 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast"))); | |
4801 os::Solaris::set_cond_init(::cond_init); | |
4802 os::Solaris::set_cond_destroy(::cond_destroy); | |
4803 } | |
4804 } | |
4805 } | |
4806 | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
4807 bool os::Solaris::liblgrp_init() { |
267
9d6a3a6891f8
6720130: NUMA allocator: The linux version should search for libnuma.so.1
iveresov
parents:
144
diff
changeset
|
4808 void *handle = dlopen("liblgrp.so.1", RTLD_LAZY); |
0 | 4809 if (handle != NULL) { |
4810 os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home"))); | |
4811 os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init"))); | |
4812 os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini"))); | |
4813 os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root"))); | |
4814 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
|
4815 os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources"))); |
0 | 4816 os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps"))); |
4817 os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t, | |
4818 dlsym(handle, "lgrp_cookie_stale"))); | |
4819 | |
4820 lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER); | |
4821 set_lgrp_cookie(c); | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
4822 return true; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
4823 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
4824 return false; |
0 | 4825 } |
4826 | |
4827 void os::Solaris::misc_sym_init() { | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4828 address func; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4829 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4830 // getisax |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4831 func = resolve_symbol_lazy("getisax"); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4832 if (func != NULL) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4833 os::Solaris::_getisax = CAST_TO_FN_PTR(getisax_func_t, func); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4834 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4835 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4836 // meminfo |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4837 func = resolve_symbol_lazy("meminfo"); |
0 | 4838 if (func != NULL) { |
4839 os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func)); | |
4840 } | |
4841 } | |
4842 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4843 uint_t os::Solaris::getisax(uint32_t* array, uint_t n) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4844 assert(_getisax != NULL, "_getisax not set"); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4845 return _getisax(array, n); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4846 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4847 |
0 | 4848 // int pset_getloadavg(psetid_t pset, double loadavg[], int nelem); |
4849 typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem); | |
4850 static pset_getloadavg_type pset_getloadavg_ptr = NULL; | |
4851 | |
4852 void init_pset_getloadavg_ptr(void) { | |
4853 pset_getloadavg_ptr = | |
4854 (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg"); | |
4855 if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) { | |
4856 warning("pset_getloadavg function not found"); | |
4857 } | |
4858 } | |
4859 | |
4860 int os::Solaris::_dev_zero_fd = -1; | |
4861 | |
4862 // this is called _before_ the global arguments have been parsed | |
4863 void os::init(void) { | |
4864 _initial_pid = getpid(); | |
4865 | |
4866 max_hrtime = first_hrtime = gethrtime(); | |
4867 | |
4868 init_random(1234567); | |
4869 | |
4870 page_size = sysconf(_SC_PAGESIZE); | |
4871 if (page_size == -1) | |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1353
diff
changeset
|
4872 fatal(err_msg("os_solaris.cpp: os::init: sysconf failed (%s)", |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1353
diff
changeset
|
4873 strerror(errno))); |
0 | 4874 init_page_sizes((size_t) page_size); |
4875 | |
4876 Solaris::initialize_system_info(); | |
4877 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4878 // Initialize misc. symbols as soon as possible, so we can use them |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4879 // if we need them. |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4880 Solaris::misc_sym_init(); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4881 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4882 int fd = ::open("/dev/zero", O_RDWR); |
0 | 4883 if (fd < 0) { |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1353
diff
changeset
|
4884 fatal(err_msg("os::init: cannot open /dev/zero (%s)", strerror(errno))); |
0 | 4885 } else { |
4886 Solaris::set_dev_zero_fd(fd); | |
4887 | |
4888 // Close on exec, child won't inherit. | |
4889 fcntl(fd, F_SETFD, FD_CLOEXEC); | |
4890 } | |
4891 | |
4892 clock_tics_per_sec = CLK_TCK; | |
4893 | |
4894 // check if dladdr1() exists; dladdr1 can provide more information than | |
4895 // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9 | |
4896 // and is available on linker patches for 5.7 and 5.8. | |
4897 // libdl.so must have been loaded, this call is just an entry lookup | |
4898 void * hdl = dlopen("libdl.so", RTLD_NOW); | |
4899 if (hdl) | |
4900 dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1")); | |
4901 | |
4902 // (Solaris only) this switches to calls that actually do locking. | |
4903 ThreadCritical::initialize(); | |
4904 | |
4905 main_thread = thr_self(); | |
4906 | |
4907 // Constant minimum stack size allowed. It must be at least | |
4908 // the minimum of what the OS supports (thr_min_stack()), and | |
4909 // enough to allow the thread to get to user bytecode execution. | |
4910 Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed); | |
4911 // If the pagesize of the VM is greater than 8K determine the appropriate | |
4912 // number of initial guard pages. The user can change this with the | |
4913 // command line arguments, if needed. | |
4914 if (vm_page_size() > 8*K) { | |
4915 StackYellowPages = 1; | |
4916 StackRedPages = 1; | |
4917 StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size(); | |
4918 } | |
4919 } | |
4920 | |
4921 // To install functions for atexit system call | |
4922 extern "C" { | |
4923 static void perfMemory_exit_helper() { | |
4924 perfMemory_exit(); | |
4925 } | |
4926 } | |
4927 | |
4928 // this is called _after_ the global arguments have been parsed | |
4929 jint os::init_2(void) { | |
4930 // try to enable extended file IO ASAP, see 6431278 | |
4931 os::Solaris::try_enable_extended_io(); | |
4932 | |
4933 // Allocate a single page and mark it as readable for safepoint polling. Also | |
4934 // use this first mmap call to check support for MAP_ALIGN. | |
4935 address polling_page = (address)Solaris::mmap_chunk((char*)page_size, | |
4936 page_size, | |
4937 MAP_PRIVATE | MAP_ALIGN, | |
4938 PROT_READ); | |
4939 if (polling_page == NULL) { | |
4940 has_map_align = false; | |
4941 polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE, | |
4942 PROT_READ); | |
4943 } | |
4944 | |
4945 os::set_polling_page(polling_page); | |
4946 | |
4947 #ifndef PRODUCT | |
4948 if( Verbose && PrintMiscellaneous ) | |
4949 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
4950 #endif | |
4951 | |
4952 if (!UseMembar) { | |
4953 address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE ); | |
4954 guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page"); | |
4955 os::set_memory_serialize_page( mem_serialize_page ); | |
4956 | |
4957 #ifndef PRODUCT | |
4958 if(Verbose && PrintMiscellaneous) | |
4959 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
4960 #endif | |
12233
40136aa2cdb1
8010722: assert: failed: heap size is too big for compressed oops
tschatzl
parents:
12110
diff
changeset
|
4961 } |
0 | 4962 |
4963 // Check minimum allowable stack size for thread creation and to initialize | |
4964 // the java system classes, including StackOverflowError - depends on page | |
4965 // size. Add a page for compiler2 recursion in main thread. | |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
4966 // Add in 2*BytesPerWord times page size to account for VM stack during |
0 | 4967 // class initialization depending on 32 or 64 bit VM. |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
4968 os::Solaris::min_stack_allowed = MAX2(os::Solaris::min_stack_allowed, |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
4969 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
4970 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size); |
0 | 4971 |
4972 size_t threadStackSizeInBytes = ThreadStackSize * K; | |
4973 if (threadStackSizeInBytes != 0 && | |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
4974 threadStackSizeInBytes < os::Solaris::min_stack_allowed) { |
0 | 4975 tty->print_cr("\nThe stack size specified is too small, Specify at least %dk", |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
4976 os::Solaris::min_stack_allowed/K); |
0 | 4977 return JNI_ERR; |
4978 } | |
4979 | |
4980 // For 64kbps there will be a 64kb page size, which makes | |
4981 // the usable default stack size quite a bit less. Increase the | |
4982 // stack for 64kb (or any > than 8kb) pages, this increases | |
4983 // virtual memory fragmentation (since we're not creating the | |
4984 // stack on a power of 2 boundary. The real fix for this | |
4985 // should be to fix the guard page mechanism. | |
4986 | |
4987 if (vm_page_size() > 8*K) { | |
4988 threadStackSizeInBytes = (threadStackSizeInBytes != 0) | |
4989 ? threadStackSizeInBytes + | |
4990 ((StackYellowPages + StackRedPages) * vm_page_size()) | |
4991 : 0; | |
4992 ThreadStackSize = threadStackSizeInBytes/K; | |
4993 } | |
4994 | |
4995 // Make the stack size a multiple of the page size so that | |
4996 // the yellow/red zones can be guarded. | |
4997 JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, | |
4998 vm_page_size())); | |
4999 | |
5000 Solaris::libthread_init(); | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5001 |
0 | 5002 if (UseNUMA) { |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5003 if (!Solaris::liblgrp_init()) { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5004 UseNUMA = false; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5005 } else { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5006 size_t lgrp_limit = os::numa_get_groups_num(); |
6197 | 5007 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
parents:
439
diff
changeset
|
5008 size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit); |
6197 | 5009 FREE_C_HEAP_ARRAY(int, lgrp_ids, mtInternal); |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5010 if (lgrp_num < 2) { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5011 // 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
parents:
439
diff
changeset
|
5012 UseNUMA = false; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5013 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5014 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5015 if (!UseNUMA && ForceNUMA) { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5016 UseNUMA = true; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5017 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5018 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5019 |
0 | 5020 Solaris::signal_sets_init(); |
5021 Solaris::init_signal_mem(); | |
5022 Solaris::install_signal_handlers(); | |
5023 | |
5024 if (libjsigversion < JSIG_VERSION_1_4_1) { | |
5025 Maxlibjsigsigs = OLDMAXSIGNUM; | |
5026 } | |
5027 | |
5028 // initialize synchronization primitives to use either thread or | |
5029 // lwp synchronization (controlled by UseLWPSynchronization) | |
5030 Solaris::synchronization_init(); | |
5031 | |
5032 if (MaxFDLimit) { | |
5033 // set the number of file descriptors to max. print out error | |
5034 // if getrlimit/setrlimit fails but continue regardless. | |
5035 struct rlimit nbr_files; | |
5036 int status = getrlimit(RLIMIT_NOFILE, &nbr_files); | |
5037 if (status != 0) { | |
5038 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5039 perror("os::init_2 getrlimit failed"); | |
5040 } else { | |
5041 nbr_files.rlim_cur = nbr_files.rlim_max; | |
5042 status = setrlimit(RLIMIT_NOFILE, &nbr_files); | |
5043 if (status != 0) { | |
5044 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5045 perror("os::init_2 setrlimit failed"); | |
5046 } | |
5047 } | |
5048 } | |
5049 | |
5050 // Calculate theoretical max. size of Threads to guard gainst | |
5051 // artifical out-of-memory situations, where all available address- | |
5052 // space has been reserved by thread stacks. Default stack size is 1Mb. | |
5053 size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ? | |
5054 JavaThread::stack_size_at_create() : (1*K*K); | |
5055 assert(pre_thread_stack_size != 0, "Must have a stack"); | |
5056 // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when | |
5057 // we should start doing Virtual Memory banging. Currently when the threads will | |
5058 // have used all but 200Mb of space. | |
5059 size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K); | |
5060 Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size; | |
5061 | |
5062 // at-exit methods are called in the reverse order of their registration. | |
5063 // In Solaris 7 and earlier, atexit functions are called on return from | |
5064 // main or as a result of a call to exit(3C). There can be only 32 of | |
5065 // these functions registered and atexit() does not set errno. In Solaris | |
5066 // 8 and later, there is no limit to the number of functions registered | |
5067 // and atexit() sets errno. In addition, in Solaris 8 and later, atexit | |
5068 // functions are called upon dlclose(3DL) in addition to return from main | |
5069 // and exit(3C). | |
5070 | |
5071 if (PerfAllowAtExitRegistration) { | |
5072 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
5073 // atexit functions can be delayed until process exit time, which | |
5074 // can be problematic for embedded VM situations. Embedded VMs should | |
5075 // call DestroyJavaVM() to assure that VM resources are released. | |
5076 | |
5077 // note: perfMemory_exit_helper atexit function may be removed in | |
5078 // the future if the appropriate cleanup code can be added to the | |
5079 // VM_Exit VMOperation's doit method. | |
5080 if (atexit(perfMemory_exit_helper) != 0) { | |
5081 warning("os::init2 atexit(perfMemory_exit_helper) failed"); | |
5082 } | |
5083 } | |
5084 | |
5085 // Init pset_loadavg function pointer | |
5086 init_pset_getloadavg_ptr(); | |
5087 | |
5088 return JNI_OK; | |
5089 } | |
5090 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5091 void os::init_3(void) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5092 return; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5093 } |
0 | 5094 |
5095 // Mark the polling page as unreadable | |
5096 void os::make_polling_page_unreadable(void) { | |
5097 if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 ) | |
5098 fatal("Could not disable polling page"); | |
5099 }; | |
5100 | |
5101 // Mark the polling page as readable | |
5102 void os::make_polling_page_readable(void) { | |
5103 if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 ) | |
5104 fatal("Could not enable polling page"); | |
5105 }; | |
5106 | |
5107 // OS interface. | |
5108 | |
5109 bool os::check_heap(bool force) { return true; } | |
5110 | |
5111 typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr); | |
5112 static vsnprintf_t sol_vsnprintf = NULL; | |
5113 | |
5114 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { | |
5115 if (!sol_vsnprintf) { | |
5116 //search for the named symbol in the objects that were loaded after libjvm | |
5117 void* where = RTLD_NEXT; | |
5118 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5119 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5120 if (!sol_vsnprintf){ | |
5121 //search for the named symbol in the objects that were loaded before libjvm | |
5122 where = RTLD_DEFAULT; | |
5123 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5124 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5125 assert(sol_vsnprintf != NULL, "vsnprintf not found"); | |
5126 } | |
5127 } | |
5128 return (*sol_vsnprintf)(buf, count, fmt, argptr); | |
5129 } | |
5130 | |
5131 | |
5132 // Is a (classpath) directory empty? | |
5133 bool os::dir_is_empty(const char* path) { | |
5134 DIR *dir = NULL; | |
5135 struct dirent *ptr; | |
5136 | |
5137 dir = opendir(path); | |
5138 if (dir == NULL) return true; | |
5139 | |
5140 /* Scan the directory */ | |
5141 bool result = true; | |
5142 char buf[sizeof(struct dirent) + MAX_PATH]; | |
5143 struct dirent *dbuf = (struct dirent *) buf; | |
5144 while (result && (ptr = readdir(dir, dbuf)) != NULL) { | |
5145 if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { | |
5146 result = false; | |
5147 } | |
5148 } | |
5149 closedir(dir); | |
5150 return result; | |
5151 } | |
5152 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5153 // 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
|
5154 // from src/solaris/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5155 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5156 #ifndef O_DELETE |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5157 #define O_DELETE 0x10000 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5158 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5159 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5160 // 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
|
5161 // 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
|
5162 // 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
|
5163 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5164 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
|
5165 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5166 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5167 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5168 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5169 int fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5170 int o_delete = (oflag & O_DELETE); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5171 oflag = oflag & ~O_DELETE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5172 |
2097 | 5173 fd = ::open64(path, oflag, mode); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5174 if (fd == -1) return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5175 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5176 //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
|
5177 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5178 struct stat64 buf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5179 int ret = ::fstat64(fd, &buf64); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5180 int st_mode = buf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5181 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5182 if (ret != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5183 if ((st_mode & S_IFMT) == S_IFDIR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5184 errno = EISDIR; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5185 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5186 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5187 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5188 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5189 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5190 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5191 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5192 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5193 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5194 * 32-bit Solaris systems suffer from: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5195 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5196 * - 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
|
5197 * 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
|
5198 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5199 * - 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
|
5200 * 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
|
5201 * 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
|
5202 * 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
|
5203 * 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
|
5204 * 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
|
5205 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5206 * We attempt to make everything work anyways by: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5207 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5208 * - 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
|
5209 * 256 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5210 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5211 * - 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
|
5212 * 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
|
5213 * 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
|
5214 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5215 * - 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
|
5216 * 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
|
5217 * 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
|
5218 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5219 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5220 * 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
|
5221 * 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
|
5222 * 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
|
5223 * enable_extended_FILE_stdio() in VM initialisation |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5224 * Giri Mandalika's blog |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5225 * 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
|
5226 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5227 #ifndef _LP64 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5228 if ((!enabled_extended_FILE_stdio) && fd < 256) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5229 int newfd = ::fcntl(fd, F_DUPFD, 256); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5230 if (newfd != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5231 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5232 fd = newfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5233 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5234 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5235 #endif // 32-bit Solaris |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5236 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5237 * 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
|
5238 * specifically destined for a subprocess should have the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5239 * 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
|
5240 * 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
|
5241 * 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
|
5242 * UNIXProcess.c), and this in turn might: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5243 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5244 * - 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
|
5245 * descriptors, resulting in mysterious hangs, or |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5246 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5247 * - 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
|
5248 * suffering from bug 1085341. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5249 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5250 * (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
|
5251 * design flaw) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5252 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5253 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5254 * 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
|
5255 * 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
|
5256 * 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
|
5257 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5258 #ifdef FD_CLOEXEC |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5259 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5260 int flags = ::fcntl(fd, F_GETFD); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5261 if (flags != -1) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5262 ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5263 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5264 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5265 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5266 if (o_delete != 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5267 ::unlink(path); |
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 return fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5270 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5271 |
0 | 5272 // create binary file, rewriting existing file if required |
5273 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
5274 int oflags = O_WRONLY | O_CREAT; | |
5275 if (!rewrite_existing) { | |
5276 oflags |= O_EXCL; | |
5277 } | |
5278 return ::open64(path, oflags, S_IREAD | S_IWRITE); | |
5279 } | |
5280 | |
5281 // return current position of file pointer | |
5282 jlong os::current_file_offset(int fd) { | |
5283 return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); | |
5284 } | |
5285 | |
5286 // move file pointer to the specified offset | |
5287 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
5288 return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); | |
5289 } | |
5290 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5291 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
|
5292 return (jlong) ::lseek64(fd, offset, whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5293 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5294 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5295 char * os::native_path(char *path) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5296 return path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5297 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5298 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5299 int os::ftruncate(int fd, jlong length) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5300 return ::ftruncate64(fd, length); |
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 int os::fsync(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5304 RESTARTABLE_RETURN_INT(::fsync(fd)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5305 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5306 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5307 int os::available(int fd, jlong *bytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5308 jlong cur, end; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5309 int mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5310 struct stat64 buf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5311 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5312 if (::fstat64(fd, &buf64) >= 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5313 mode = buf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5314 if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5315 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5316 * XXX: is the following call interruptible? If so, this might |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5317 * need to go through the INTERRUPT_IO() wrapper as for other |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5318 * blocking, interruptible calls in this file. |
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 int n,ioctl_return; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5321 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5322 INTERRUPTIBLE(::ioctl(fd, FIONREAD, &n),ioctl_return,os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5323 if (ioctl_return>= 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5324 *bytes = n; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5325 return 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5326 } |
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 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5329 if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5330 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5331 } else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5332 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5333 } else if (::lseek64(fd, cur, SEEK_SET) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5334 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5335 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5336 *bytes = end - cur; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5337 return 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5338 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5339 |
0 | 5340 // Map a block of memory. |
6197 | 5341 char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5342 char *addr, size_t bytes, bool read_only, |
5343 bool allow_exec) { | |
5344 int prot; | |
5345 int flags; | |
5346 | |
5347 if (read_only) { | |
5348 prot = PROT_READ; | |
5349 flags = MAP_SHARED; | |
5350 } else { | |
5351 prot = PROT_READ | PROT_WRITE; | |
5352 flags = MAP_PRIVATE; | |
5353 } | |
5354 | |
5355 if (allow_exec) { | |
5356 prot |= PROT_EXEC; | |
5357 } | |
5358 | |
5359 if (addr != NULL) { | |
5360 flags |= MAP_FIXED; | |
5361 } | |
5362 | |
5363 char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, | |
5364 fd, file_offset); | |
5365 if (mapped_address == MAP_FAILED) { | |
5366 return NULL; | |
5367 } | |
5368 return mapped_address; | |
5369 } | |
5370 | |
5371 | |
5372 // Remap a block of memory. | |
6197 | 5373 char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5374 char *addr, size_t bytes, bool read_only, |
5375 bool allow_exec) { | |
5376 // same as map_memory() on this OS | |
5377 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
5378 allow_exec); | |
5379 } | |
5380 | |
5381 | |
5382 // Unmap a block of memory. | |
6197 | 5383 bool os::pd_unmap_memory(char* addr, size_t bytes) { |
0 | 5384 return munmap(addr, bytes) == 0; |
5385 } | |
5386 | |
5387 void os::pause() { | |
5388 char filename[MAX_PATH]; | |
5389 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
5390 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
5391 } else { | |
5392 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
5393 } | |
5394 | |
5395 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
5396 if (fd != -1) { | |
5397 struct stat buf; | |
1980
828eafbd85cc
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diff
changeset
|
5398 ::close(fd); |
0 | 5399 while (::stat(filename, &buf) == 0) { |
5400 (void)::poll(NULL, 0, 100); | |
5401 } | |
5402 } else { | |
5403 jio_fprintf(stderr, | |
5404 "Could not open pause file '%s', continuing immediately.\n", filename); | |
5405 } | |
5406 } | |
5407 | |
5408 #ifndef PRODUCT | |
5409 #ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5410 // Turn this on if you need to trace synch operations. | |
5411 // Set RECORD_SYNCH_LIMIT to a large-enough value, | |
5412 // and call record_synch_enable and record_synch_disable | |
5413 // around the computation of interest. | |
5414 | |
5415 void record_synch(char* name, bool returning); // defined below | |
5416 | |
5417 class RecordSynch { | |
5418 char* _name; | |
5419 public: | |
5420 RecordSynch(char* name) :_name(name) | |
5421 { record_synch(_name, false); } | |
5422 ~RecordSynch() { record_synch(_name, true); } | |
5423 }; | |
5424 | |
5425 #define CHECK_SYNCH_OP(ret, name, params, args, inner) \ | |
5426 extern "C" ret name params { \ | |
5427 typedef ret name##_t params; \ | |
5428 static name##_t* implem = NULL; \ | |
5429 static int callcount = 0; \ | |
5430 if (implem == NULL) { \ | |
5431 implem = (name##_t*) dlsym(RTLD_NEXT, #name); \ | |
5432 if (implem == NULL) fatal(dlerror()); \ | |
5433 } \ | |
5434 ++callcount; \ | |
5435 RecordSynch _rs(#name); \ | |
5436 inner; \ | |
5437 return implem args; \ | |
5438 } | |
5439 // in dbx, examine callcounts this way: | |
5440 // for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done | |
5441 | |
5442 #define CHECK_POINTER_OK(p) \ | |
6725
da91efe96a93
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6200
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|
5443 (!Universe::is_fully_initialized() || !Universe::is_reserved_heap((oop)(p))) |
0 | 5444 #define CHECK_MU \ |
5445 if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only."); | |
5446 #define CHECK_CV \ | |
5447 if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only."); | |
5448 #define CHECK_P(p) \ | |
5449 if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only."); | |
5450 | |
5451 #define CHECK_MUTEX(mutex_op) \ | |
5452 CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU); | |
5453 | |
5454 CHECK_MUTEX( mutex_lock) | |
5455 CHECK_MUTEX( _mutex_lock) | |
5456 CHECK_MUTEX( mutex_unlock) | |
5457 CHECK_MUTEX(_mutex_unlock) | |
5458 CHECK_MUTEX( mutex_trylock) | |
5459 CHECK_MUTEX(_mutex_trylock) | |
5460 | |
5461 #define CHECK_COND(cond_op) \ | |
5462 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV); | |
5463 | |
5464 CHECK_COND( cond_wait); | |
5465 CHECK_COND(_cond_wait); | |
5466 CHECK_COND(_cond_wait_cancel); | |
5467 | |
5468 #define CHECK_COND2(cond_op) \ | |
5469 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV); | |
5470 | |
5471 CHECK_COND2( cond_timedwait); | |
5472 CHECK_COND2(_cond_timedwait); | |
5473 CHECK_COND2(_cond_timedwait_cancel); | |
5474 | |
5475 // do the _lwp_* versions too | |
5476 #define mutex_t lwp_mutex_t | |
5477 #define cond_t lwp_cond_t | |
5478 CHECK_MUTEX( _lwp_mutex_lock) | |
5479 CHECK_MUTEX( _lwp_mutex_unlock) | |
5480 CHECK_MUTEX( _lwp_mutex_trylock) | |
5481 CHECK_MUTEX( __lwp_mutex_lock) | |
5482 CHECK_MUTEX( __lwp_mutex_unlock) | |
5483 CHECK_MUTEX( __lwp_mutex_trylock) | |
5484 CHECK_MUTEX(___lwp_mutex_lock) | |
5485 CHECK_MUTEX(___lwp_mutex_unlock) | |
5486 | |
5487 CHECK_COND( _lwp_cond_wait); | |
5488 CHECK_COND( __lwp_cond_wait); | |
5489 CHECK_COND(___lwp_cond_wait); | |
5490 | |
5491 CHECK_COND2( _lwp_cond_timedwait); | |
5492 CHECK_COND2( __lwp_cond_timedwait); | |
5493 #undef mutex_t | |
5494 #undef cond_t | |
5495 | |
5496 CHECK_SYNCH_OP(int, _lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5497 CHECK_SYNCH_OP(int,__lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5498 CHECK_SYNCH_OP(int, _lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5499 CHECK_SYNCH_OP(int,__lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5500 CHECK_SYNCH_OP(int, _lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5501 CHECK_SYNCH_OP(int,__lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5502 CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5503 CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5504 | |
5505 | |
5506 // recording machinery: | |
5507 | |
5508 enum { RECORD_SYNCH_LIMIT = 200 }; | |
5509 char* record_synch_name[RECORD_SYNCH_LIMIT]; | |
5510 void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT]; | |
5511 bool record_synch_returning[RECORD_SYNCH_LIMIT]; | |
5512 thread_t record_synch_thread[RECORD_SYNCH_LIMIT]; | |
5513 int record_synch_count = 0; | |
5514 bool record_synch_enabled = false; | |
5515 | |
5516 // in dbx, examine recorded data this way: | |
5517 // for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done | |
5518 | |
5519 void record_synch(char* name, bool returning) { | |
5520 if (record_synch_enabled) { | |
5521 if (record_synch_count < RECORD_SYNCH_LIMIT) { | |
5522 record_synch_name[record_synch_count] = name; | |
5523 record_synch_returning[record_synch_count] = returning; | |
5524 record_synch_thread[record_synch_count] = thr_self(); | |
5525 record_synch_arg0ptr[record_synch_count] = &name; | |
5526 record_synch_count++; | |
5527 } | |
5528 // put more checking code here: | |
5529 // ... | |
5530 } | |
5531 } | |
5532 | |
5533 void record_synch_enable() { | |
5534 // start collecting trace data, if not already doing so | |
5535 if (!record_synch_enabled) record_synch_count = 0; | |
5536 record_synch_enabled = true; | |
5537 } | |
5538 | |
5539 void record_synch_disable() { | |
5540 // stop collecting trace data | |
5541 record_synch_enabled = false; | |
5542 } | |
5543 | |
5544 #endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5545 #endif // PRODUCT | |
5546 | |
5547 const intptr_t thr_time_off = (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5548 const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) - | |
5549 (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5550 | |
5551 | |
5552 // JVMTI & JVM monitoring and management support | |
5553 // The thread_cpu_time() and current_thread_cpu_time() are only | |
5554 // supported if is_thread_cpu_time_supported() returns true. | |
5555 // They are not supported on Solaris T1. | |
5556 | |
5557 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
5558 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
5559 // of a thread. | |
5560 // | |
5561 // current_thread_cpu_time() and thread_cpu_time(Thread *) | |
5562 // returns the fast estimate available on the platform. | |
5563 | |
5564 // hrtime_t gethrvtime() return value includes | |
5565 // user time but does not include system time | |
5566 jlong os::current_thread_cpu_time() { | |
5567 return (jlong) gethrvtime(); | |
5568 } | |
5569 | |
5570 jlong os::thread_cpu_time(Thread *thread) { | |
5571 // return user level CPU time only to be consistent with | |
5572 // what current_thread_cpu_time returns. | |
5573 // thread_cpu_time_info() must be changed if this changes | |
5574 return os::thread_cpu_time(thread, false /* user time only */); | |
5575 } | |
5576 | |
5577 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
5578 if (user_sys_cpu_time) { | |
5579 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
5580 } else { | |
5581 return os::current_thread_cpu_time(); | |
5582 } | |
5583 } | |
5584 | |
5585 jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { | |
5586 char proc_name[64]; | |
5587 int count; | |
5588 prusage_t prusage; | |
5589 jlong lwp_time; | |
5590 int fd; | |
5591 | |
5592 sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage", | |
5593 getpid(), | |
5594 thread->osthread()->lwp_id()); | |
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1972
diff
changeset
|
5595 fd = ::open(proc_name, O_RDONLY); |
0 | 5596 if ( fd == -1 ) return -1; |
5597 | |
5598 do { | |
1980
828eafbd85cc
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1972
diff
changeset
|
5599 count = ::pread(fd, |
0 | 5600 (void *)&prusage.pr_utime, |
5601 thr_time_size, | |
5602 thr_time_off); | |
5603 } while (count < 0 && errno == EINTR); | |
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ikrylov
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1972
diff
changeset
|
5604 ::close(fd); |
0 | 5605 if ( count < 0 ) return -1; |
5606 | |
5607 if (user_sys_cpu_time) { | |
5608 // user + system CPU time | |
5609 lwp_time = (((jlong)prusage.pr_stime.tv_sec + | |
5610 (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) + | |
5611 (jlong)prusage.pr_stime.tv_nsec + | |
5612 (jlong)prusage.pr_utime.tv_nsec; | |
5613 } else { | |
5614 // user level CPU time only | |
5615 lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) + | |
5616 (jlong)prusage.pr_utime.tv_nsec; | |
5617 } | |
5618 | |
5619 return(lwp_time); | |
5620 } | |
5621 | |
5622 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
5623 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
5624 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
5625 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
5626 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
5627 } | |
5628 | |
5629 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
5630 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
5631 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
5632 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
5633 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
5634 } | |
5635 | |
5636 bool os::is_thread_cpu_time_supported() { | |
5637 if ( os::Solaris::T2_libthread() || UseBoundThreads ) { | |
5638 return true; | |
5639 } else { | |
5640 return false; | |
5641 } | |
5642 } | |
5643 | |
5644 // System loadavg support. Returns -1 if load average cannot be obtained. | |
5645 // Return the load average for our processor set if the primitive exists | |
5646 // (Solaris 9 and later). Otherwise just return system wide loadavg. | |
5647 int os::loadavg(double loadavg[], int nelem) { | |
5648 if (pset_getloadavg_ptr != NULL) { | |
5649 return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem); | |
5650 } else { | |
5651 return ::getloadavg(loadavg, nelem); | |
5652 } | |
5653 } | |
5654 | |
5655 //--------------------------------------------------------------------------------- | |
5656 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5657 bool os::find(address addr, outputStream* st) { |
0 | 5658 Dl_info dlinfo; |
5659 memset(&dlinfo, 0, sizeof(dlinfo)); | |
11092
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
changeset
|
5660 if (dladdr(addr, &dlinfo) != 0) { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
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diff
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|
5661 st->print(PTR_FORMAT ": ", addr); |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10986
diff
changeset
|
5662 if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) { |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1642
diff
changeset
|
5663 st->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr); |
11092
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
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diff
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|
5664 } else if (dlinfo.dli_fbase != NULL) |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1642
diff
changeset
|
5665 st->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase); |
0 | 5666 else |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
changeset
|
5667 st->print("<absolute address>"); |
11092
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
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diff
changeset
|
5668 if (dlinfo.dli_fname != NULL) { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10986
diff
changeset
|
5669 st->print(" in %s", dlinfo.dli_fname); |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10986
diff
changeset
|
5670 } |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10986
diff
changeset
|
5671 if (dlinfo.dli_fbase != NULL) { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
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diff
changeset
|
5672 st->print(" at " PTR_FORMAT, dlinfo.dli_fbase); |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
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diff
changeset
|
5673 } |
1681
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|
5674 st->cr(); |
0 | 5675 |
5676 if (Verbose) { | |
5677 // decode some bytes around the PC | |
9060
cc32ccaaf47f
8003310: Enable -Wunused-function when compiling with gcc
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changeset
|
5678 address begin = clamp_address_in_page(addr-40, addr, os::vm_page_size()); |
cc32ccaaf47f
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mikael
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changeset
|
5679 address end = clamp_address_in_page(addr+40, addr, os::vm_page_size()); |
0 | 5680 address lowest = (address) dlinfo.dli_sname; |
5681 if (!lowest) lowest = (address) dlinfo.dli_fbase; | |
5682 if (begin < lowest) begin = lowest; | |
5683 Dl_info dlinfo2; | |
11092
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dcubed
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changeset
|
5684 if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr |
0 | 5685 && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) |
5686 end = (address) dlinfo2.dli_saddr; | |
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|
5687 Disassembler::decode(begin, end, st); |
0 | 5688 } |
5689 return true; | |
5690 } | |
5691 return false; | |
5692 } | |
5693 | |
5694 // Following function has been added to support HotSparc's libjvm.so running | |
5695 // under Solaris production JDK 1.2.2 / 1.3.0. These came from | |
5696 // src/solaris/hpi/native_threads in the EVM codebase. | |
5697 // | |
5698 // NOTE: This is no longer needed in the 1.3.1 and 1.4 production release | |
5699 // libraries and should thus be removed. We will leave it behind for a while | |
5700 // until we no longer want to able to run on top of 1.3.0 Solaris production | |
5701 // JDK. See 4341971. | |
5702 | |
5703 #define STACK_SLACK 0x800 | |
5704 | |
5705 extern "C" { | |
5706 intptr_t sysThreadAvailableStackWithSlack() { | |
5707 stack_t st; | |
5708 intptr_t retval, stack_top; | |
5709 retval = thr_stksegment(&st); | |
5710 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
5711 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
5712 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
5713 stack_top=(intptr_t)st.ss_sp-st.ss_size; | |
5714 return ((intptr_t)&stack_top - stack_top - STACK_SLACK); | |
5715 } | |
5716 } | |
5717 | |
5718 // ObjectMonitor park-unpark infrastructure ... | |
5719 // | |
5720 // We implement Solaris and Linux PlatformEvents with the | |
5721 // obvious condvar-mutex-flag triple. | |
5722 // Another alternative that works quite well is pipes: | |
5723 // Each PlatformEvent consists of a pipe-pair. | |
5724 // The thread associated with the PlatformEvent | |
5725 // calls park(), which reads from the input end of the pipe. | |
5726 // Unpark() writes into the other end of the pipe. | |
5727 // The write-side of the pipe must be set NDELAY. | |
5728 // Unfortunately pipes consume a large # of handles. | |
5729 // Native solaris lwp_park() and lwp_unpark() work nicely, too. | |
5730 // Using pipes for the 1st few threads might be workable, however. | |
5731 // | |
5732 // park() is permitted to return spuriously. | |
5733 // Callers of park() should wrap the call to park() in | |
5734 // an appropriate loop. A litmus test for the correct | |
5735 // usage of park is the following: if park() were modified | |
5736 // to immediately return 0 your code should still work, | |
5737 // albeit degenerating to a spin loop. | |
5738 // | |
5739 // An interesting optimization for park() is to use a trylock() | |
5740 // to attempt to acquire the mutex. If the trylock() fails | |
5741 // then we know that a concurrent unpark() operation is in-progress. | |
5742 // in that case the park() code could simply set _count to 0 | |
5743 // and return immediately. The subsequent park() operation *might* | |
5744 // return immediately. That's harmless as the caller of park() is | |
5745 // expected to loop. By using trylock() we will have avoided a | |
5746 // avoided a context switch caused by contention on the per-thread mutex. | |
5747 // | |
5748 // TODO-FIXME: | |
5749 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the | |
5750 // objectmonitor implementation. | |
5751 // 2. Collapse the JSR166 parker event, and the | |
5752 // objectmonitor ParkEvent into a single "Event" construct. | |
5753 // 3. In park() and unpark() add: | |
5754 // assert (Thread::current() == AssociatedWith). | |
5755 // 4. add spurious wakeup injection on a -XX:EarlyParkReturn=N switch. | |
5756 // 1-out-of-N park() operations will return immediately. | |
5757 // | |
5758 // _Event transitions in park() | |
5759 // -1 => -1 : illegal | |
5760 // 1 => 0 : pass - return immediately | |
5761 // 0 => -1 : block | |
5762 // | |
5763 // _Event serves as a restricted-range semaphore. | |
5764 // | |
5765 // Another possible encoding of _Event would be with | |
5766 // explicit "PARKED" == 01b and "SIGNALED" == 10b bits. | |
5767 // | |
5768 // TODO-FIXME: add DTRACE probes for: | |
5769 // 1. Tx parks | |
5770 // 2. Ty unparks Tx | |
5771 // 3. Tx resumes from park | |
5772 | |
5773 | |
5774 // value determined through experimentation | |
5775 #define ROUNDINGFIX 11 | |
5776 | |
5777 // utility to compute the abstime argument to timedwait. | |
5778 // TODO-FIXME: switch from compute_abstime() to unpackTime(). | |
5779 | |
5780 static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) { | |
5781 // millis is the relative timeout time | |
5782 // abstime will be the absolute timeout time | |
5783 if (millis < 0) millis = 0; | |
5784 struct timeval now; | |
5785 int status = gettimeofday(&now, NULL); | |
5786 assert(status == 0, "gettimeofday"); | |
5787 jlong seconds = millis / 1000; | |
5788 jlong max_wait_period; | |
5789 | |
5790 if (UseLWPSynchronization) { | |
5791 // forward port of fix for 4275818 (not sleeping long enough) | |
5792 // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where | |
5793 // _lwp_cond_timedwait() used a round_down algorithm rather | |
5794 // than a round_up. For millis less than our roundfactor | |
5795 // it rounded down to 0 which doesn't meet the spec. | |
5796 // For millis > roundfactor we may return a bit sooner, but | |
5797 // since we can not accurately identify the patch level and | |
5798 // this has already been fixed in Solaris 9 and 8 we will | |
5799 // leave it alone rather than always rounding down. | |
5800 | |
5801 if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX; | |
5802 // It appears that when we go directly through Solaris _lwp_cond_timedwait() | |
5803 // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6 | |
5804 max_wait_period = 21000000; | |
5805 } else { | |
5806 max_wait_period = 50000000; | |
5807 } | |
5808 millis %= 1000; | |
5809 if (seconds > max_wait_period) { // see man cond_timedwait(3T) | |
5810 seconds = max_wait_period; | |
5811 } | |
5812 abstime->tv_sec = now.tv_sec + seconds; | |
5813 long usec = now.tv_usec + millis * 1000; | |
5814 if (usec >= 1000000) { | |
5815 abstime->tv_sec += 1; | |
5816 usec -= 1000000; | |
5817 } | |
5818 abstime->tv_nsec = usec * 1000; | |
5819 return abstime; | |
5820 } | |
5821 | |
5822 // Test-and-clear _Event, always leaves _Event set to 0, returns immediately. | |
5823 // Conceptually TryPark() should be equivalent to park(0). | |
5824 | |
5825 int os::PlatformEvent::TryPark() { | |
5826 for (;;) { | |
5827 const int v = _Event ; | |
5828 guarantee ((v == 0) || (v == 1), "invariant") ; | |
5829 if (Atomic::cmpxchg (0, &_Event, v) == v) return v ; | |
5830 } | |
5831 } | |
5832 | |
5833 void os::PlatformEvent::park() { // AKA: down() | |
5834 // Invariant: Only the thread associated with the Event/PlatformEvent | |
5835 // may call park(). | |
5836 int v ; | |
5837 for (;;) { | |
5838 v = _Event ; | |
5839 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
5840 } | |
5841 guarantee (v >= 0, "invariant") ; | |
5842 if (v == 0) { | |
5843 // Do this the hard way by blocking ... | |
5844 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
5845 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
5846 // Only for SPARC >= V8PlusA | |
5847 #if defined(__sparc) && defined(COMPILER2) | |
5848 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
5849 #endif | |
5850 int status = os::Solaris::mutex_lock(_mutex); | |
5851 assert_status(status == 0, status, "mutex_lock"); | |
5852 guarantee (_nParked == 0, "invariant") ; | |
5853 ++ _nParked ; | |
5854 while (_Event < 0) { | |
5855 // for some reason, under 2.7 lwp_cond_wait() may return ETIME ... | |
5856 // Treat this the same as if the wait was interrupted | |
5857 // With usr/lib/lwp going to kernel, always handle ETIME | |
5858 status = os::Solaris::cond_wait(_cond, _mutex); | |
5859 if (status == ETIME) status = EINTR ; | |
5860 assert_status(status == 0 || status == EINTR, status, "cond_wait"); | |
5861 } | |
5862 -- _nParked ; | |
5863 _Event = 0 ; | |
5864 status = os::Solaris::mutex_unlock(_mutex); | |
5865 assert_status(status == 0, status, "mutex_unlock"); | |
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5866 // Paranoia to ensure our locked and lock-free paths interact |
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5867 // correctly with each other. |
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5868 OrderAccess::fence(); |
0 | 5869 } |
5870 } | |
5871 | |
5872 int os::PlatformEvent::park(jlong millis) { | |
5873 guarantee (_nParked == 0, "invariant") ; | |
5874 int v ; | |
5875 for (;;) { | |
5876 v = _Event ; | |
5877 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
5878 } | |
5879 guarantee (v >= 0, "invariant") ; | |
5880 if (v != 0) return OS_OK ; | |
5881 | |
5882 int ret = OS_TIMEOUT; | |
5883 timestruc_t abst; | |
5884 compute_abstime (&abst, millis); | |
5885 | |
5886 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
5887 // For Solaris SPARC set fprs.FEF=0 prior to parking. | |
5888 // Only for SPARC >= V8PlusA | |
5889 #if defined(__sparc) && defined(COMPILER2) | |
5890 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
5891 #endif | |
5892 int status = os::Solaris::mutex_lock(_mutex); | |
5893 assert_status(status == 0, status, "mutex_lock"); | |
5894 guarantee (_nParked == 0, "invariant") ; | |
5895 ++ _nParked ; | |
5896 while (_Event < 0) { | |
5897 int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst); | |
5898 assert_status(status == 0 || status == EINTR || | |
5899 status == ETIME || status == ETIMEDOUT, | |
5900 status, "cond_timedwait"); | |
5901 if (!FilterSpuriousWakeups) break ; // previous semantics | |
5902 if (status == ETIME || status == ETIMEDOUT) break ; | |
5903 // We consume and ignore EINTR and spurious wakeups. | |
5904 } | |
5905 -- _nParked ; | |
5906 if (_Event >= 0) ret = OS_OK ; | |
5907 _Event = 0 ; | |
5908 status = os::Solaris::mutex_unlock(_mutex); | |
5909 assert_status(status == 0, status, "mutex_unlock"); | |
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5910 // Paranoia to ensure our locked and lock-free paths interact |
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5911 // correctly with each other. |
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5912 OrderAccess::fence(); |
0 | 5913 return ret; |
5914 } | |
5915 | |
5916 void os::PlatformEvent::unpark() { | |
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5917 // Transitions for _Event: |
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5918 // 0 :=> 1 |
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5919 // 1 :=> 1 |
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5920 // -1 :=> either 0 or 1; must signal target thread |
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5921 // That is, we can safely transition _Event from -1 to either |
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5922 // 0 or 1. Forcing 1 is slightly more efficient for back-to-back |
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5923 // unpark() calls. |
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5924 // See also: "Semaphores in Plan 9" by Mullender & Cox |
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5925 // |
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5926 // Note: Forcing a transition from "-1" to "1" on an unpark() means |
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5927 // that it will take two back-to-back park() calls for the owning |
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5928 // thread to block. This has the benefit of forcing a spurious return |
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5929 // from the first park() call after an unpark() call which will help |
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5930 // shake out uses of park() and unpark() without condition variables. |
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5931 |
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5932 if (Atomic::xchg(1, &_Event) >= 0) return; |
0 | 5933 |
5934 // If the thread associated with the event was parked, wake it. | |
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5935 // Wait for the thread assoc with the PlatformEvent to vacate. |
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5936 int status = os::Solaris::mutex_lock(_mutex); |
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5937 assert_status(status == 0, status, "mutex_lock"); |
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5938 int AnyWaiters = _nParked; |
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5939 status = os::Solaris::mutex_unlock(_mutex); |
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5940 assert_status(status == 0, status, "mutex_unlock"); |
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5941 guarantee(AnyWaiters == 0 || AnyWaiters == 1, "invariant"); |
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5942 if (AnyWaiters != 0) { |
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5943 // We intentional signal *after* dropping the lock |
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5944 // to avoid a common class of futile wakeups. |
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5945 status = os::Solaris::cond_signal(_cond); |
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5946 assert_status(status == 0, status, "cond_signal"); |
0 | 5947 } |
5948 } | |
5949 | |
5950 // JSR166 | |
5951 // ------------------------------------------------------- | |
5952 | |
5953 /* | |
5954 * The solaris and linux implementations of park/unpark are fairly | |
5955 * conservative for now, but can be improved. They currently use a | |
5956 * mutex/condvar pair, plus _counter. | |
5957 * Park decrements _counter if > 0, else does a condvar wait. Unpark | |
5958 * sets count to 1 and signals condvar. Only one thread ever waits | |
5959 * on the condvar. Contention seen when trying to park implies that someone | |
5960 * is unparking you, so don't wait. And spurious returns are fine, so there | |
5961 * is no need to track notifications. | |
5962 */ | |
5963 | |
5964 #define MAX_SECS 100000000 | |
5965 /* | |
5966 * This code is common to linux and solaris and will be moved to a | |
5967 * common place in dolphin. | |
5968 * | |
5969 * The passed in time value is either a relative time in nanoseconds | |
5970 * or an absolute time in milliseconds. Either way it has to be unpacked | |
5971 * into suitable seconds and nanoseconds components and stored in the | |
5972 * given timespec structure. | |
5973 * Given time is a 64-bit value and the time_t used in the timespec is only | |
5974 * a signed-32-bit value (except on 64-bit Linux) we have to watch for | |
5975 * overflow if times way in the future are given. Further on Solaris versions | |
5976 * prior to 10 there is a restriction (see cond_timedwait) that the specified | |
5977 * number of seconds, in abstime, is less than current_time + 100,000,000. | |
5978 * As it will be 28 years before "now + 100000000" will overflow we can | |
5979 * ignore overflow and just impose a hard-limit on seconds using the value | |
5980 * of "now + 100,000,000". This places a limit on the timeout of about 3.17 | |
5981 * years from "now". | |
5982 */ | |
5983 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { | |
5984 assert (time > 0, "convertTime"); | |
5985 | |
5986 struct timeval now; | |
5987 int status = gettimeofday(&now, NULL); | |
5988 assert(status == 0, "gettimeofday"); | |
5989 | |
5990 time_t max_secs = now.tv_sec + MAX_SECS; | |
5991 | |
5992 if (isAbsolute) { | |
5993 jlong secs = time / 1000; | |
5994 if (secs > max_secs) { | |
5995 absTime->tv_sec = max_secs; | |
5996 } | |
5997 else { | |
5998 absTime->tv_sec = secs; | |
5999 } | |
6000 absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; | |
6001 } | |
6002 else { | |
6003 jlong secs = time / NANOSECS_PER_SEC; | |
6004 if (secs >= MAX_SECS) { | |
6005 absTime->tv_sec = max_secs; | |
6006 absTime->tv_nsec = 0; | |
6007 } | |
6008 else { | |
6009 absTime->tv_sec = now.tv_sec + secs; | |
6010 absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; | |
6011 if (absTime->tv_nsec >= NANOSECS_PER_SEC) { | |
6012 absTime->tv_nsec -= NANOSECS_PER_SEC; | |
6013 ++absTime->tv_sec; // note: this must be <= max_secs | |
6014 } | |
6015 } | |
6016 } | |
6017 assert(absTime->tv_sec >= 0, "tv_sec < 0"); | |
6018 assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); | |
6019 assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); | |
6020 assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); | |
6021 } | |
6022 | |
6023 void Parker::park(bool isAbsolute, jlong time) { | |
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6024 // Ideally we'd do something useful while spinning, such |
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6025 // as calling unpackTime(). |
0 | 6026 |
6027 // Optional fast-path check: | |
6028 // Return immediately if a permit is available. | |
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6029 // We depend on Atomic::xchg() having full barrier semantics |
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6030 // since we are doing a lock-free update to _counter. |
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6031 if (Atomic::xchg(0, &_counter) > 0) return; |
0 | 6032 |
6033 // Optional fast-exit: Check interrupt before trying to wait | |
6034 Thread* thread = Thread::current(); | |
6035 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
6036 JavaThread *jt = (JavaThread *)thread; | |
6037 if (Thread::is_interrupted(thread, false)) { | |
6038 return; | |
6039 } | |
6040 | |
6041 // First, demultiplex/decode time arguments | |
6042 timespec absTime; | |
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6043 if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all |
0 | 6044 return; |
6045 } | |
6046 if (time > 0) { | |
6047 // Warning: this code might be exposed to the old Solaris time | |
6048 // round-down bugs. Grep "roundingFix" for details. | |
6049 unpackTime(&absTime, isAbsolute, time); | |
6050 } | |
6051 | |
6052 // Enter safepoint region | |
6053 // Beware of deadlocks such as 6317397. | |
6054 // The per-thread Parker:: _mutex is a classic leaf-lock. | |
6055 // In particular a thread must never block on the Threads_lock while | |
6056 // holding the Parker:: mutex. If safepoints are pending both the | |
6057 // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. | |
6058 ThreadBlockInVM tbivm(jt); | |
6059 | |
6060 // Don't wait if cannot get lock since interference arises from | |
6061 // unblocking. Also. check interrupt before trying wait | |
6062 if (Thread::is_interrupted(thread, false) || | |
6063 os::Solaris::mutex_trylock(_mutex) != 0) { | |
6064 return; | |
6065 } | |
6066 | |
6067 int status ; | |
6068 | |
6069 if (_counter > 0) { // no wait needed | |
6070 _counter = 0; | |
6071 status = os::Solaris::mutex_unlock(_mutex); | |
6072 assert (status == 0, "invariant") ; | |
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6073 // Paranoia to ensure our locked and lock-free paths interact |
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6074 // correctly with each other and Java-level accesses. |
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6075 OrderAccess::fence(); |
0 | 6076 return; |
6077 } | |
6078 | |
6079 #ifdef ASSERT | |
6080 // Don't catch signals while blocked; let the running threads have the signals. | |
6081 // (This allows a debugger to break into the running thread.) | |
6082 sigset_t oldsigs; | |
6083 sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals(); | |
6084 thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); | |
6085 #endif | |
6086 | |
6087 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
6088 jt->set_suspend_equivalent(); | |
6089 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
6090 | |
6091 // Do this the hard way by blocking ... | |
6092 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6093 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
6094 // Only for SPARC >= V8PlusA | |
6095 #if defined(__sparc) && defined(COMPILER2) | |
6096 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6097 #endif | |
6098 | |
6099 if (time == 0) { | |
6100 status = os::Solaris::cond_wait (_cond, _mutex) ; | |
6101 } else { | |
6102 status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime); | |
6103 } | |
6104 // Note that an untimed cond_wait() can sometimes return ETIME on older | |
6105 // versions of the Solaris. | |
6106 assert_status(status == 0 || status == EINTR || | |
6107 status == ETIME || status == ETIMEDOUT, | |
6108 status, "cond_timedwait"); | |
6109 | |
6110 #ifdef ASSERT | |
6111 thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL); | |
6112 #endif | |
6113 _counter = 0 ; | |
6114 status = os::Solaris::mutex_unlock(_mutex); | |
6115 assert_status(status == 0, status, "mutex_unlock") ; | |
7629
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6116 // Paranoia to ensure our locked and lock-free paths interact |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6117 // correctly with each other and Java-level accesses. |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6118 OrderAccess::fence(); |
0 | 6119 |
6120 // If externally suspended while waiting, re-suspend | |
6121 if (jt->handle_special_suspend_equivalent_condition()) { | |
6122 jt->java_suspend_self(); | |
6123 } | |
6124 } | |
6125 | |
6126 void Parker::unpark() { | |
6127 int s, status ; | |
6128 status = os::Solaris::mutex_lock (_mutex) ; | |
6129 assert (status == 0, "invariant") ; | |
6130 s = _counter; | |
6131 _counter = 1; | |
6132 status = os::Solaris::mutex_unlock (_mutex) ; | |
6133 assert (status == 0, "invariant") ; | |
6134 | |
6135 if (s < 1) { | |
6136 status = os::Solaris::cond_signal (_cond) ; | |
6137 assert (status == 0, "invariant") ; | |
6138 } | |
6139 } | |
6140 | |
6141 extern char** environ; | |
6142 | |
6143 // Run the specified command in a separate process. Return its exit value, | |
6144 // or -1 on failure (e.g. can't fork a new process). | |
6145 // Unlike system(), this function can be called from signal handler. It | |
6146 // doesn't block SIGINT et al. | |
6147 int os::fork_and_exec(char* cmd) { | |
6148 char * argv[4]; | |
6149 argv[0] = (char *)"sh"; | |
6150 argv[1] = (char *)"-c"; | |
6151 argv[2] = cmd; | |
6152 argv[3] = NULL; | |
6153 | |
6154 // fork is async-safe, fork1 is not so can't use in signal handler | |
6155 pid_t pid; | |
6156 Thread* t = ThreadLocalStorage::get_thread_slow(); | |
6157 if (t != NULL && t->is_inside_signal_handler()) { | |
6158 pid = fork(); | |
6159 } else { | |
6160 pid = fork1(); | |
6161 } | |
6162 | |
6163 if (pid < 0) { | |
6164 // fork failed | |
6165 warning("fork failed: %s", strerror(errno)); | |
6166 return -1; | |
6167 | |
6168 } else if (pid == 0) { | |
6169 // child process | |
6170 | |
6171 // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris | |
6172 execve("/usr/bin/sh", argv, environ); | |
6173 | |
6174 // execve failed | |
6175 _exit(-1); | |
6176 | |
6177 } else { | |
6178 // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't | |
6179 // care about the actual exit code, for now. | |
6180 | |
6181 int status; | |
6182 | |
6183 // Wait for the child process to exit. This returns immediately if | |
6184 // the child has already exited. */ | |
6185 while (waitpid(pid, &status, 0) < 0) { | |
6186 switch (errno) { | |
6187 case ECHILD: return 0; | |
6188 case EINTR: break; | |
6189 default: return -1; | |
6190 } | |
6191 } | |
6192 | |
6193 if (WIFEXITED(status)) { | |
6194 // The child exited normally; get its exit code. | |
6195 return WEXITSTATUS(status); | |
6196 } else if (WIFSIGNALED(status)) { | |
6197 // The child exited because of a signal | |
6198 // The best value to return is 0x80 + signal number, | |
6199 // because that is what all Unix shells do, and because | |
6200 // it allows callers to distinguish between process exit and | |
6201 // process death by signal. | |
6202 return 0x80 + WTERMSIG(status); | |
6203 } else { | |
6204 // Unknown exit code; pass it through | |
6205 return status; | |
6206 } | |
6207 } | |
6208 } | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6209 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6210 // is_headless_jre() |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6211 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6212 // 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
|
6213 // 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
|
6214 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6215 // 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
|
6216 // 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
|
6217 // |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6218 bool os::is_headless_jre() { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6219 struct stat statbuf; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6220 char buf[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6221 char libmawtpath[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6222 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
|
6223 const char *new_xawtstr = "/libawt_xawt.so"; |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6224 char *p; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6225 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6226 // Get path to libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6227 os::jvm_path(buf, sizeof(buf)); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6228 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6229 // Get rid of libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6230 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6231 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6232 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6233 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6234 // Get rid of client or server |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6235 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6236 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6237 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6238 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6239 // check xawt/libmawt.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6240 strcpy(libmawtpath, buf); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6241 strcat(libmawtpath, xawtstr); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6242 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6243 |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6244 // check libawt_xawt.so |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6245 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
|
6246 strcat(libmawtpath, new_xawtstr); |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6247 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6248 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6249 return true; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6250 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6251 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6252 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
|
6253 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
|
6254 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6255 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6256 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
|
6257 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6258 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6259 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6260 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
|
6261 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6262 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6263 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6264 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
|
6265 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
|
6266 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6267 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6268 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
|
6269 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
|
6270 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6271 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6272 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
|
6273 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
|
6274 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6275 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6276 // 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
|
6277 // 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
|
6278 // 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
|
6279 // "wait forever" value. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6280 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6281 int os::timeout(int fd, long timeout) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6282 int res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6283 struct timeval t; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6284 julong prevtime, newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6285 static const char* aNull = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6286 struct pollfd pfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6287 pfd.fd = fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6288 pfd.events = POLLIN; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6289 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6290 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6291 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
|
6292 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6293 for(;;) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6294 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
|
6295 if(res == OS_ERR && errno == EINTR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6296 if(timeout != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6297 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6298 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
|
6299 timeout -= newtime - prevtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6300 if(timeout <= 0) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6301 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6302 prevtime = newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6303 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6304 } else return res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6305 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6306 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6307 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6308 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
|
6309 int _result; |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6310 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,\ |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6311 os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6312 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6313 // 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
|
6314 // one of two values when errno == EINTR |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6315 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6316 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
|
6317 && (errno == EINTR)) { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6318 /* 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
|
6319 INTERRUPTIBLE(::connect(fd, him, len), _result,\ |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6320 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6321 /* undo these changes */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6322 if (_result == OS_ERR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6323 if (errno == EALREADY) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6324 errno = EINPROGRESS; /* fall through */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6325 } else if (errno == EISCONN) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6326 errno = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6327 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6328 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6329 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6330 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6331 return _result; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6332 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6333 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6334 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
|
6335 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6336 return OS_ERR; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6337 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6338 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
|
6339 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6340 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6341 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6342 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
|
6343 sockaddr* from, socklen_t* fromlen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6344 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
|
6345 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6346 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6347 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6348 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
|
6349 struct sockaddr* to, socklen_t tolen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6350 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
|
6351 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6352 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6353 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6354 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
|
6355 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6356 return OS_OK; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6357 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6358 int ret; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6359 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6360 // 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
|
6361 // 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
|
6362 return (ret == OS_ERR) ? 0 : 1; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6363 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6364 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6365 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
|
6366 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
|
6367 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6368 } |
6200
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6369 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6370 // Get the default path to the core file |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6371 // Returns the length of the string |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6372 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
|
6373 const char* p = get_current_directory(buffer, bufferSize); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6374 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6375 if (p == NULL) { |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6376 assert(p != NULL, "failed to get current directory"); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6377 return 0; |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6378 } |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6379 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6380 return strlen(buffer); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6381 } |
12110
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6382 |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6383 #ifndef PRODUCT |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6384 void TestReserveMemorySpecial_test() { |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6385 // No tests available for this platform |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6386 } |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
11112
diff
changeset
|
6387 #endif |