Mercurial > hg > truffle
annotate src/os/solaris/vm/os_solaris.cpp @ 14410:f42f2e2a1518
8020775: PPC64 (part 12): posix signal printing
Summary: Implement methods printing posix signal information and call them in unix os files.
Reviewed-by: kvn, dholmes, twisti
Contributed-by: thomas.stuefe@sap.com
author | goetz |
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date | Fri, 26 Jul 2013 00:59:18 +0200 |
parents | ec173c8f3739 |
children | e2722a66aba7 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 | |
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129 #ifndef LGRP_RSRC_CPU |
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130 # define LGRP_RSRC_CPU 0 /* CPU resources */ |
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131 #endif |
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132 #ifndef LGRP_RSRC_MEM |
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133 # define LGRP_RSRC_MEM 1 /* memory resources */ |
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134 #endif |
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135 |
0 | 136 // see thr_setprio(3T) for the basis of these numbers |
137 #define MinimumPriority 0 | |
138 #define NormalPriority 64 | |
139 #define MaximumPriority 127 | |
140 | |
141 // Values for ThreadPriorityPolicy == 1 | |
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142 int prio_policy1[CriticalPriority+1] = { |
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143 -99999, 0, 16, 32, 48, 64, |
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144 80, 96, 112, 124, 127, 127 }; |
0 | 145 |
146 // System parameters used internally | |
147 static clock_t clock_tics_per_sec = 100; | |
148 | |
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149 // Track if we have called enable_extended_FILE_stdio (on Solaris 10u4+) |
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150 static bool enabled_extended_FILE_stdio = false; |
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151 |
0 | 152 // For diagnostics to print a message once. see run_periodic_checks |
153 static bool check_addr0_done = false; | |
154 static sigset_t check_signal_done; | |
155 static bool check_signals = true; | |
156 | |
157 address os::Solaris::handler_start; // start pc of thr_sighndlrinfo | |
158 address os::Solaris::handler_end; // end pc of thr_sighndlrinfo | |
159 | |
160 address os::Solaris::_main_stack_base = NULL; // 4352906 workaround | |
161 | |
162 | |
163 // "default" initializers for missing libc APIs | |
164 extern "C" { | |
165 static int lwp_mutex_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
166 static int lwp_mutex_destroy(mutex_t *mx) { return 0; } | |
167 | |
168 static int lwp_cond_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
169 static int lwp_cond_destroy(cond_t *cv) { return 0; } | |
170 } | |
171 | |
172 // "default" initializers for pthread-based synchronization | |
173 extern "C" { | |
174 static int pthread_mutex_default_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
175 static int pthread_cond_default_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
176 } | |
177 | |
10405 | 178 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time); |
179 | |
0 | 180 // Thread Local Storage |
181 // This is common to all Solaris platforms so it is defined here, | |
182 // in this common file. | |
183 // The declarations are in the os_cpu threadLS*.hpp files. | |
184 // | |
185 // Static member initialization for TLS | |
186 Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL}; | |
187 | |
188 #ifndef PRODUCT | |
189 #define _PCT(n,d) ((100.0*(double)(n))/(double)(d)) | |
190 | |
191 int ThreadLocalStorage::_tcacheHit = 0; | |
192 int ThreadLocalStorage::_tcacheMiss = 0; | |
193 | |
194 void ThreadLocalStorage::print_statistics() { | |
195 int total = _tcacheMiss+_tcacheHit; | |
196 tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n", | |
197 _tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total)); | |
198 } | |
199 #undef _PCT | |
200 #endif // PRODUCT | |
201 | |
202 Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id, | |
203 int index) { | |
204 Thread *thread = get_thread_slow(); | |
205 if (thread != NULL) { | |
206 address sp = os::current_stack_pointer(); | |
207 guarantee(thread->_stack_base == NULL || | |
208 (sp <= thread->_stack_base && | |
209 sp >= thread->_stack_base - thread->_stack_size) || | |
210 is_error_reported(), | |
211 "sp must be inside of selected thread stack"); | |
212 | |
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213 thread->set_self_raw_id(raw_id); // mark for quick retrieval |
0 | 214 _get_thread_cache[ index ] = thread; |
215 } | |
216 return thread; | |
217 } | |
218 | |
219 | |
220 static const double all_zero[ sizeof(Thread) / sizeof(double) + 1 ] = {0}; | |
221 #define NO_CACHED_THREAD ((Thread*)all_zero) | |
222 | |
223 void ThreadLocalStorage::pd_set_thread(Thread* thread) { | |
224 | |
225 // Store the new value before updating the cache to prevent a race | |
226 // between get_thread_via_cache_slowly() and this store operation. | |
227 os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread); | |
228 | |
229 // Update thread cache with new thread if setting on thread create, | |
230 // or NO_CACHED_THREAD (zeroed) thread if resetting thread on exit. | |
231 uintptr_t raw = pd_raw_thread_id(); | |
232 int ix = pd_cache_index(raw); | |
233 _get_thread_cache[ix] = thread == NULL ? NO_CACHED_THREAD : thread; | |
234 } | |
235 | |
236 void ThreadLocalStorage::pd_init() { | |
237 for (int i = 0; i < _pd_cache_size; i++) { | |
238 _get_thread_cache[i] = NO_CACHED_THREAD; | |
239 } | |
240 } | |
241 | |
242 // Invalidate all the caches (happens to be the same as pd_init). | |
243 void ThreadLocalStorage::pd_invalidate_all() { pd_init(); } | |
244 | |
245 #undef NO_CACHED_THREAD | |
246 | |
247 // END Thread Local Storage | |
248 | |
249 static inline size_t adjust_stack_size(address base, size_t size) { | |
250 if ((ssize_t)size < 0) { | |
251 // 4759953: Compensate for ridiculous stack size. | |
252 size = max_intx; | |
253 } | |
254 if (size > (size_t)base) { | |
255 // 4812466: Make sure size doesn't allow the stack to wrap the address space. | |
256 size = (size_t)base; | |
257 } | |
258 return size; | |
259 } | |
260 | |
261 static inline stack_t get_stack_info() { | |
262 stack_t st; | |
263 int retval = thr_stksegment(&st); | |
264 st.ss_size = adjust_stack_size((address)st.ss_sp, st.ss_size); | |
265 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
266 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
267 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
268 return st; | |
269 } | |
270 | |
271 address os::current_stack_base() { | |
272 int r = thr_main() ; | |
273 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
274 bool is_primordial_thread = r; | |
275 | |
276 // Workaround 4352906, avoid calls to thr_stksegment by | |
277 // thr_main after the first one (it looks like we trash | |
278 // some data, causing the value for ss_sp to be incorrect). | |
279 if (!is_primordial_thread || os::Solaris::_main_stack_base == NULL) { | |
280 stack_t st = get_stack_info(); | |
281 if (is_primordial_thread) { | |
282 // cache initial value of stack base | |
283 os::Solaris::_main_stack_base = (address)st.ss_sp; | |
284 } | |
285 return (address)st.ss_sp; | |
286 } else { | |
287 guarantee(os::Solaris::_main_stack_base != NULL, "Attempt to use null cached stack base"); | |
288 return os::Solaris::_main_stack_base; | |
289 } | |
290 } | |
291 | |
292 size_t os::current_stack_size() { | |
293 size_t size; | |
294 | |
295 int r = thr_main() ; | |
296 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
297 if(!r) { | |
298 size = get_stack_info().ss_size; | |
299 } else { | |
300 struct rlimit limits; | |
301 getrlimit(RLIMIT_STACK, &limits); | |
302 size = adjust_stack_size(os::Solaris::_main_stack_base, (size_t)limits.rlim_cur); | |
303 } | |
304 // base may not be page aligned | |
305 address base = current_stack_base(); | |
306 address bottom = (address)align_size_up((intptr_t)(base - size), os::vm_page_size());; | |
307 return (size_t)(base - bottom); | |
308 } | |
309 | |
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310 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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311 return localtime_r(clock, res); |
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312 } |
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313 |
0 | 314 // interruptible infrastructure |
315 | |
316 // setup_interruptible saves the thread state before going into an | |
317 // interruptible system call. | |
318 // The saved state is used to restore the thread to | |
319 // its former state whether or not an interrupt is received. | |
320 // Used by classloader os::read | |
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321 // os::restartable_read calls skip this layer and stay in _thread_in_native |
0 | 322 |
323 void os::Solaris::setup_interruptible(JavaThread* thread) { | |
324 | |
325 JavaThreadState thread_state = thread->thread_state(); | |
326 | |
327 assert(thread_state != _thread_blocked, "Coming from the wrong thread"); | |
328 assert(thread_state != _thread_in_native, "Native threads skip setup_interruptible"); | |
329 OSThread* osthread = thread->osthread(); | |
330 osthread->set_saved_interrupt_thread_state(thread_state); | |
331 thread->frame_anchor()->make_walkable(thread); | |
332 ThreadStateTransition::transition(thread, thread_state, _thread_blocked); | |
333 } | |
334 | |
335 // Version of setup_interruptible() for threads that are already in | |
336 // _thread_blocked. Used by os_sleep(). | |
337 void os::Solaris::setup_interruptible_already_blocked(JavaThread* thread) { | |
338 thread->frame_anchor()->make_walkable(thread); | |
339 } | |
340 | |
341 JavaThread* os::Solaris::setup_interruptible() { | |
342 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
343 setup_interruptible(thread); | |
344 return thread; | |
345 } | |
346 | |
347 void os::Solaris::try_enable_extended_io() { | |
348 typedef int (*enable_extended_FILE_stdio_t)(int, int); | |
349 | |
350 if (!UseExtendedFileIO) { | |
351 return; | |
352 } | |
353 | |
354 enable_extended_FILE_stdio_t enabler = | |
355 (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT, | |
356 "enable_extended_FILE_stdio"); | |
357 if (enabler) { | |
358 enabler(-1, -1); | |
359 } | |
360 } | |
361 | |
362 | |
363 #ifdef ASSERT | |
364 | |
365 JavaThread* os::Solaris::setup_interruptible_native() { | |
366 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
367 JavaThreadState thread_state = thread->thread_state(); | |
368 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
369 return thread; | |
370 } | |
371 | |
372 void os::Solaris::cleanup_interruptible_native(JavaThread* thread) { | |
373 JavaThreadState thread_state = thread->thread_state(); | |
374 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
375 } | |
376 #endif | |
377 | |
378 // cleanup_interruptible reverses the effects of setup_interruptible | |
379 // setup_interruptible_already_blocked() does not need any cleanup. | |
380 | |
381 void os::Solaris::cleanup_interruptible(JavaThread* thread) { | |
382 OSThread* osthread = thread->osthread(); | |
383 | |
384 ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state()); | |
385 } | |
386 | |
387 // I/O interruption related counters called in _INTERRUPTIBLE | |
388 | |
389 void os::Solaris::bump_interrupted_before_count() { | |
390 RuntimeService::record_interrupted_before_count(); | |
391 } | |
392 | |
393 void os::Solaris::bump_interrupted_during_count() { | |
394 RuntimeService::record_interrupted_during_count(); | |
395 } | |
396 | |
397 static int _processors_online = 0; | |
398 | |
399 jint os::Solaris::_os_thread_limit = 0; | |
400 volatile jint os::Solaris::_os_thread_count = 0; | |
401 | |
402 julong os::available_memory() { | |
403 return Solaris::available_memory(); | |
404 } | |
405 | |
406 julong os::Solaris::available_memory() { | |
407 return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size(); | |
408 } | |
409 | |
410 julong os::Solaris::_physical_memory = 0; | |
411 | |
412 julong os::physical_memory() { | |
413 return Solaris::physical_memory(); | |
414 } | |
415 | |
416 static hrtime_t first_hrtime = 0; | |
417 static const hrtime_t hrtime_hz = 1000*1000*1000; | |
418 const int LOCK_BUSY = 1; | |
419 const int LOCK_FREE = 0; | |
420 const int LOCK_INVALID = -1; | |
421 static volatile hrtime_t max_hrtime = 0; | |
422 static volatile int max_hrtime_lock = LOCK_FREE; // Update counter with LSB as lock-in-progress | |
423 | |
424 | |
425 void os::Solaris::initialize_system_info() { | |
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426 set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); |
0 | 427 _processors_online = sysconf (_SC_NPROCESSORS_ONLN); |
428 _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); | |
429 } | |
430 | |
431 int os::active_processor_count() { | |
432 int online_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
433 pid_t pid = getpid(); | |
434 psetid_t pset = PS_NONE; | |
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435 // Are we running in a processor set or is there any processor set around? |
0 | 436 if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) { |
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437 uint_t pset_cpus; |
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438 // Query the number of cpus available to us. |
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439 if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) { |
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440 assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check"); |
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441 _processors_online = pset_cpus; |
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442 return pset_cpus; |
0 | 443 } |
444 } | |
445 // Otherwise return number of online cpus | |
446 return online_cpus; | |
447 } | |
448 | |
449 static bool find_processors_in_pset(psetid_t pset, | |
450 processorid_t** id_array, | |
451 uint_t* id_length) { | |
452 bool result = false; | |
453 // Find the number of processors in the processor set. | |
454 if (pset_info(pset, NULL, id_length, NULL) == 0) { | |
455 // Make up an array to hold their ids. | |
6197 | 456 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 457 // Fill in the array with their processor ids. |
458 if (pset_info(pset, NULL, id_length, *id_array) == 0) { | |
459 result = true; | |
460 } | |
461 } | |
462 return result; | |
463 } | |
464 | |
465 // Callers of find_processors_online() must tolerate imprecise results -- | |
466 // the system configuration can change asynchronously because of DR | |
467 // or explicit psradm operations. | |
468 // | |
469 // We also need to take care that the loop (below) terminates as the | |
470 // number of processors online can change between the _SC_NPROCESSORS_ONLN | |
471 // request and the loop that builds the list of processor ids. Unfortunately | |
472 // there's no reliable way to determine the maximum valid processor id, | |
473 // so we use a manifest constant, MAX_PROCESSOR_ID, instead. See p_online | |
474 // man pages, which claim the processor id set is "sparse, but | |
475 // not too sparse". MAX_PROCESSOR_ID is used to ensure that we eventually | |
476 // exit the loop. | |
477 // | |
478 // In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's | |
479 // not available on S8.0. | |
480 | |
481 static bool find_processors_online(processorid_t** id_array, | |
482 uint* id_length) { | |
483 const processorid_t MAX_PROCESSOR_ID = 100000 ; | |
484 // Find the number of processors online. | |
485 *id_length = sysconf(_SC_NPROCESSORS_ONLN); | |
486 // Make up an array to hold their ids. | |
6197 | 487 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 488 // Processors need not be numbered consecutively. |
489 long found = 0; | |
490 processorid_t next = 0; | |
491 while (found < *id_length && next < MAX_PROCESSOR_ID) { | |
492 processor_info_t info; | |
493 if (processor_info(next, &info) == 0) { | |
494 // NB, PI_NOINTR processors are effectively online ... | |
495 if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) { | |
496 (*id_array)[found] = next; | |
497 found += 1; | |
498 } | |
499 } | |
500 next += 1; | |
501 } | |
502 if (found < *id_length) { | |
503 // The loop above didn't identify the expected number of processors. | |
504 // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN) | |
505 // and re-running the loop, above, but there's no guarantee of progress | |
506 // if the system configuration is in flux. Instead, we just return what | |
507 // we've got. Note that in the worst case find_processors_online() could | |
508 // return an empty set. (As a fall-back in the case of the empty set we | |
509 // could just return the ID of the current processor). | |
510 *id_length = found ; | |
511 } | |
512 | |
513 return true; | |
514 } | |
515 | |
516 static bool assign_distribution(processorid_t* id_array, | |
517 uint id_length, | |
518 uint* distribution, | |
519 uint distribution_length) { | |
520 // We assume we can assign processorid_t's to uint's. | |
521 assert(sizeof(processorid_t) == sizeof(uint), | |
522 "can't convert processorid_t to uint"); | |
523 // Quick check to see if we won't succeed. | |
524 if (id_length < distribution_length) { | |
525 return false; | |
526 } | |
527 // Assign processor ids to the distribution. | |
528 // Try to shuffle processors to distribute work across boards, | |
529 // assuming 4 processors per board. | |
530 const uint processors_per_board = ProcessDistributionStride; | |
531 // Find the maximum processor id. | |
532 processorid_t max_id = 0; | |
533 for (uint m = 0; m < id_length; m += 1) { | |
534 max_id = MAX2(max_id, id_array[m]); | |
535 } | |
536 // The next id, to limit loops. | |
537 const processorid_t limit_id = max_id + 1; | |
538 // Make up markers for available processors. | |
6197 | 539 bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id, mtInternal); |
0 | 540 for (uint c = 0; c < limit_id; c += 1) { |
541 available_id[c] = false; | |
542 } | |
543 for (uint a = 0; a < id_length; a += 1) { | |
544 available_id[id_array[a]] = true; | |
545 } | |
546 // Step by "boards", then by "slot", copying to "assigned". | |
547 // NEEDS_CLEANUP: The assignment of processors should be stateful, | |
548 // remembering which processors have been assigned by | |
549 // previous calls, etc., so as to distribute several | |
550 // independent calls of this method. What we'd like is | |
551 // It would be nice to have an API that let us ask | |
552 // how many processes are bound to a processor, | |
553 // but we don't have that, either. | |
554 // In the short term, "board" is static so that | |
555 // subsequent distributions don't all start at board 0. | |
556 static uint board = 0; | |
557 uint assigned = 0; | |
558 // Until we've found enough processors .... | |
559 while (assigned < distribution_length) { | |
560 // ... find the next available processor in the board. | |
561 for (uint slot = 0; slot < processors_per_board; slot += 1) { | |
562 uint try_id = board * processors_per_board + slot; | |
563 if ((try_id < limit_id) && (available_id[try_id] == true)) { | |
564 distribution[assigned] = try_id; | |
565 available_id[try_id] = false; | |
566 assigned += 1; | |
567 break; | |
568 } | |
569 } | |
570 board += 1; | |
571 if (board * processors_per_board + 0 >= limit_id) { | |
572 board = 0; | |
573 } | |
574 } | |
575 if (available_id != NULL) { | |
6197 | 576 FREE_C_HEAP_ARRAY(bool, available_id, mtInternal); |
0 | 577 } |
578 return true; | |
579 } | |
580 | |
4006 | 581 void os::set_native_thread_name(const char *name) { |
582 // Not yet implemented. | |
583 return; | |
584 } | |
585 | |
0 | 586 bool os::distribute_processes(uint length, uint* distribution) { |
587 bool result = false; | |
588 // Find the processor id's of all the available CPUs. | |
589 processorid_t* id_array = NULL; | |
590 uint id_length = 0; | |
591 // There are some races between querying information and using it, | |
592 // since processor sets can change dynamically. | |
593 psetid_t pset = PS_NONE; | |
594 // Are we running in a processor set? | |
595 if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) { | |
596 result = find_processors_in_pset(pset, &id_array, &id_length); | |
597 } else { | |
598 result = find_processors_online(&id_array, &id_length); | |
599 } | |
600 if (result == true) { | |
601 if (id_length >= length) { | |
602 result = assign_distribution(id_array, id_length, distribution, length); | |
603 } else { | |
604 result = false; | |
605 } | |
606 } | |
607 if (id_array != NULL) { | |
6197 | 608 FREE_C_HEAP_ARRAY(processorid_t, id_array, mtInternal); |
0 | 609 } |
610 return result; | |
611 } | |
612 | |
613 bool os::bind_to_processor(uint processor_id) { | |
614 // We assume that a processorid_t can be stored in a uint. | |
615 assert(sizeof(uint) == sizeof(processorid_t), | |
616 "can't convert uint to processorid_t"); | |
617 int bind_result = | |
618 processor_bind(P_LWPID, // bind LWP. | |
619 P_MYID, // bind current LWP. | |
620 (processorid_t) processor_id, // id. | |
621 NULL); // don't return old binding. | |
622 return (bind_result == 0); | |
623 } | |
624 | |
625 bool os::getenv(const char* name, char* buffer, int len) { | |
626 char* val = ::getenv( name ); | |
627 if ( val == NULL | |
628 || strlen(val) + 1 > len ) { | |
629 if (len > 0) buffer[0] = 0; // return a null string | |
630 return false; | |
631 } | |
632 strcpy( buffer, val ); | |
633 return true; | |
634 } | |
635 | |
636 | |
637 // Return true if user is running as root. | |
638 | |
639 bool os::have_special_privileges() { | |
640 static bool init = false; | |
641 static bool privileges = false; | |
642 if (!init) { | |
643 privileges = (getuid() != geteuid()) || (getgid() != getegid()); | |
644 init = true; | |
645 } | |
646 return privileges; | |
647 } | |
648 | |
649 | |
650 void os::init_system_properties_values() { | |
651 char arch[12]; | |
652 sysinfo(SI_ARCHITECTURE, arch, sizeof(arch)); | |
653 | |
654 // The next steps are taken in the product version: | |
655 // | |
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656 // Obtain the JAVA_HOME value from the location of libjvm.so. |
0 | 657 // This library should be located at: |
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658 // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm.so. |
0 | 659 // |
660 // If "/jre/lib/" appears at the right place in the path, then we | |
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661 // assume libjvm.so is installed in a JDK and we use this path. |
0 | 662 // |
663 // Otherwise exit with message: "Could not create the Java virtual machine." | |
664 // | |
665 // The following extra steps are taken in the debugging version: | |
666 // | |
667 // If "/jre/lib/" does NOT appear at the right place in the path | |
668 // instead of exit check for $JAVA_HOME environment variable. | |
669 // | |
670 // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, | |
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671 // then we append a fake suffix "hotspot/libjvm.so" to this path so |
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672 // it looks like libjvm.so is installed there |
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673 // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm.so. |
0 | 674 // |
675 // Otherwise exit. | |
676 // | |
677 // Important note: if the location of libjvm.so changes this | |
678 // code needs to be changed accordingly. | |
679 | |
680 // The next few definitions allow the code to be verbatim: | |
6197 | 681 #define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n), mtInternal) |
682 #define free(p) FREE_C_HEAP_ARRAY(char, p, mtInternal) | |
0 | 683 #define getenv(n) ::getenv(n) |
684 | |
685 #define EXTENSIONS_DIR "/lib/ext" | |
686 #define ENDORSED_DIR "/lib/endorsed" | |
687 #define COMMON_DIR "/usr/jdk/packages" | |
688 | |
689 { | |
690 /* sysclasspath, java_home, dll_dir */ | |
691 { | |
692 char *home_path; | |
693 char *dll_path; | |
694 char *pslash; | |
695 char buf[MAXPATHLEN]; | |
696 os::jvm_path(buf, sizeof(buf)); | |
697 | |
698 // Found the full path to libjvm.so. | |
699 // Now cut the path to <java_home>/jre if we can. | |
700 *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ | |
701 pslash = strrchr(buf, '/'); | |
702 if (pslash != NULL) | |
703 *pslash = '\0'; /* get rid of /{client|server|hotspot} */ | |
704 dll_path = malloc(strlen(buf) + 1); | |
705 if (dll_path == NULL) | |
706 return; | |
707 strcpy(dll_path, buf); | |
708 Arguments::set_dll_dir(dll_path); | |
709 | |
710 if (pslash != NULL) { | |
711 pslash = strrchr(buf, '/'); | |
712 if (pslash != NULL) { | |
713 *pslash = '\0'; /* get rid of /<arch> */ | |
714 pslash = strrchr(buf, '/'); | |
715 if (pslash != NULL) | |
716 *pslash = '\0'; /* get rid of /lib */ | |
717 } | |
718 } | |
719 | |
720 home_path = malloc(strlen(buf) + 1); | |
721 if (home_path == NULL) | |
722 return; | |
723 strcpy(home_path, buf); | |
724 Arguments::set_java_home(home_path); | |
725 | |
726 if (!set_boot_path('/', ':')) | |
727 return; | |
728 } | |
729 | |
730 /* | |
731 * Where to look for native libraries | |
732 */ | |
733 { | |
734 // Use dlinfo() to determine the correct java.library.path. | |
735 // | |
736 // If we're launched by the Java launcher, and the user | |
737 // does not set java.library.path explicitly on the commandline, | |
738 // the Java launcher sets LD_LIBRARY_PATH for us and unsets | |
739 // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64. In this case | |
740 // dlinfo returns LD_LIBRARY_PATH + crle settings (including | |
741 // /usr/lib), which is exactly what we want. | |
742 // | |
743 // If the user does set java.library.path, it completely | |
744 // overwrites this setting, and always has. | |
745 // | |
746 // If we're not launched by the Java launcher, we may | |
747 // get here with any/all of the LD_LIBRARY_PATH[_32|64] | |
748 // settings. Again, dlinfo does exactly what we want. | |
749 | |
750 Dl_serinfo _info, *info = &_info; | |
751 Dl_serpath *path; | |
752 char* library_path; | |
753 char *common_path; | |
754 int i; | |
755 | |
756 // determine search path count and required buffer size | |
757 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) { | |
758 vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror()); | |
759 } | |
760 | |
761 // allocate new buffer and initialize | |
762 info = (Dl_serinfo*)malloc(_info.dls_size); | |
763 if (info == NULL) { | |
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764 vm_exit_out_of_memory(_info.dls_size, OOM_MALLOC_ERROR, |
0 | 765 "init_system_properties_values info"); |
766 } | |
767 info->dls_size = _info.dls_size; | |
768 info->dls_cnt = _info.dls_cnt; | |
769 | |
770 // obtain search path information | |
771 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) { | |
772 free(info); | |
773 vm_exit_during_initialization("dlinfo SERINFO request", dlerror()); | |
774 } | |
775 | |
776 path = &info->dls_serpath[0]; | |
777 | |
778 // Note: Due to a legacy implementation, most of the library path | |
779 // is set in the launcher. This was to accomodate linking restrictions | |
780 // on legacy Solaris implementations (which are no longer supported). | |
781 // Eventually, all the library path setting will be done here. | |
782 // | |
783 // However, to prevent the proliferation of improperly built native | |
784 // libraries, the new path component /usr/jdk/packages is added here. | |
785 | |
786 // Determine the actual CPU architecture. | |
787 char cpu_arch[12]; | |
788 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); | |
789 #ifdef _LP64 | |
790 // If we are a 64-bit vm, perform the following translations: | |
791 // sparc -> sparcv9 | |
792 // i386 -> amd64 | |
793 if (strcmp(cpu_arch, "sparc") == 0) | |
794 strcat(cpu_arch, "v9"); | |
795 else if (strcmp(cpu_arch, "i386") == 0) | |
796 strcpy(cpu_arch, "amd64"); | |
797 #endif | |
798 | |
799 // Construct the invariant part of ld_library_path. Note that the | |
800 // space for the colon and the trailing null are provided by the | |
801 // nulls included by the sizeof operator. | |
802 size_t bufsize = sizeof(COMMON_DIR) + sizeof("/lib/") + strlen(cpu_arch); | |
803 common_path = malloc(bufsize); | |
804 if (common_path == NULL) { | |
805 free(info); | |
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806 vm_exit_out_of_memory(bufsize, OOM_MALLOC_ERROR, |
0 | 807 "init_system_properties_values common_path"); |
808 } | |
809 sprintf(common_path, COMMON_DIR "/lib/%s", cpu_arch); | |
810 | |
811 // struct size is more than sufficient for the path components obtained | |
812 // through the dlinfo() call, so only add additional space for the path | |
813 // components explicitly added here. | |
814 bufsize = info->dls_size + strlen(common_path); | |
815 library_path = malloc(bufsize); | |
816 if (library_path == NULL) { | |
817 free(info); | |
818 free(common_path); | |
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819 vm_exit_out_of_memory(bufsize, OOM_MALLOC_ERROR, |
0 | 820 "init_system_properties_values library_path"); |
821 } | |
822 library_path[0] = '\0'; | |
823 | |
824 // Construct the desired Java library path from the linker's library | |
825 // search path. | |
826 // | |
827 // For compatibility, it is optimal that we insert the additional path | |
828 // components specific to the Java VM after those components specified | |
829 // in LD_LIBRARY_PATH (if any) but before those added by the ld.so | |
830 // infrastructure. | |
831 if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it | |
832 strcpy(library_path, common_path); | |
833 } else { | |
834 int inserted = 0; | |
835 for (i = 0; i < info->dls_cnt; i++, path++) { | |
836 uint_t flags = path->dls_flags & LA_SER_MASK; | |
837 if (((flags & LA_SER_LIBPATH) == 0) && !inserted) { | |
838 strcat(library_path, common_path); | |
839 strcat(library_path, os::path_separator()); | |
840 inserted = 1; | |
841 } | |
842 strcat(library_path, path->dls_name); | |
843 strcat(library_path, os::path_separator()); | |
844 } | |
845 // eliminate trailing path separator | |
846 library_path[strlen(library_path)-1] = '\0'; | |
847 } | |
848 | |
849 // happens before argument parsing - can't use a trace flag | |
850 // tty->print_raw("init_system_properties_values: native lib path: "); | |
851 // tty->print_raw_cr(library_path); | |
852 | |
853 // callee copies into its own buffer | |
854 Arguments::set_library_path(library_path); | |
855 | |
856 free(common_path); | |
857 free(library_path); | |
858 free(info); | |
859 } | |
860 | |
861 /* | |
862 * Extensions directories. | |
863 * | |
864 * Note that the space for the colon and the trailing null are provided | |
865 * by the nulls included by the sizeof operator (so actually one byte more | |
866 * than necessary is allocated). | |
867 */ | |
868 { | |
869 char *buf = (char *) malloc(strlen(Arguments::get_java_home()) + | |
870 sizeof(EXTENSIONS_DIR) + sizeof(COMMON_DIR) + | |
871 sizeof(EXTENSIONS_DIR)); | |
872 sprintf(buf, "%s" EXTENSIONS_DIR ":" COMMON_DIR EXTENSIONS_DIR, | |
873 Arguments::get_java_home()); | |
874 Arguments::set_ext_dirs(buf); | |
875 } | |
876 | |
877 /* Endorsed standards default directory. */ | |
878 { | |
879 char * buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR)); | |
880 sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home()); | |
881 Arguments::set_endorsed_dirs(buf); | |
882 } | |
883 } | |
884 | |
885 #undef malloc | |
886 #undef free | |
887 #undef getenv | |
888 #undef EXTENSIONS_DIR | |
889 #undef ENDORSED_DIR | |
890 #undef COMMON_DIR | |
891 | |
892 } | |
893 | |
894 void os::breakpoint() { | |
895 BREAKPOINT; | |
896 } | |
897 | |
898 bool os::obsolete_option(const JavaVMOption *option) | |
899 { | |
900 if (!strncmp(option->optionString, "-Xt", 3)) { | |
901 return true; | |
902 } else if (!strncmp(option->optionString, "-Xtm", 4)) { | |
903 return true; | |
904 } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) { | |
905 return true; | |
906 } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) { | |
907 return true; | |
908 } | |
909 return false; | |
910 } | |
911 | |
912 bool os::Solaris::valid_stack_address(Thread* thread, address sp) { | |
913 address stackStart = (address)thread->stack_base(); | |
914 address stackEnd = (address)(stackStart - (address)thread->stack_size()); | |
915 if (sp < stackStart && sp >= stackEnd ) return true; | |
916 return false; | |
917 } | |
918 | |
919 extern "C" void breakpoint() { | |
920 // use debugger to set breakpoint here | |
921 } | |
922 | |
923 static thread_t main_thread; | |
924 | |
925 // Thread start routine for all new Java threads | |
926 extern "C" void* java_start(void* thread_addr) { | |
927 // Try to randomize the cache line index of hot stack frames. | |
928 // This helps when threads of the same stack traces evict each other's | |
929 // cache lines. The threads can be either from the same JVM instance, or | |
930 // from different JVM instances. The benefit is especially true for | |
931 // processors with hyperthreading technology. | |
932 static int counter = 0; | |
933 int pid = os::current_process_id(); | |
934 alloca(((pid ^ counter++) & 7) * 128); | |
935 | |
936 int prio; | |
937 Thread* thread = (Thread*)thread_addr; | |
938 OSThread* osthr = thread->osthread(); | |
939 | |
940 osthr->set_lwp_id( _lwp_self() ); // Store lwp in case we are bound | |
941 thread->_schedctl = (void *) schedctl_init () ; | |
942 | |
943 if (UseNUMA) { | |
944 int lgrp_id = os::numa_get_group_id(); | |
945 if (lgrp_id != -1) { | |
946 thread->set_lgrp_id(lgrp_id); | |
947 } | |
948 } | |
949 | |
950 // If the creator called set priority before we started, | |
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951 // we need to call set_native_priority now that we have an lwp. |
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952 // We used to get the priority from thr_getprio (we called |
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953 // thr_setprio way back in create_thread) and pass it to |
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954 // set_native_priority, but Solaris scales the priority |
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955 // in java_to_os_priority, so when we read it back here, |
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956 // we pass trash to set_native_priority instead of what's |
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957 // in java_to_os_priority. So we save the native priority |
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958 // in the osThread and recall it here. |
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959 |
0 | 960 if ( osthr->thread_id() != -1 ) { |
961 if ( UseThreadPriorities ) { | |
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962 int prio = osthr->native_priority(); |
0 | 963 if (ThreadPriorityVerbose) { |
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964 tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " |
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965 INTPTR_FORMAT ", setting priority: %d\n", |
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966 osthr->thread_id(), osthr->lwp_id(), prio); |
0 | 967 } |
968 os::set_native_priority(thread, prio); | |
969 } | |
970 } else if (ThreadPriorityVerbose) { | |
971 warning("Can't set priority in _start routine, thread id hasn't been set\n"); | |
972 } | |
973 | |
974 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
975 | |
976 // initialize signal mask for this thread | |
977 os::Solaris::hotspot_sigmask(thread); | |
978 | |
979 thread->run(); | |
980 | |
981 // One less thread is executing | |
982 // When the VMThread gets here, the main thread may have already exited | |
983 // which frees the CodeHeap containing the Atomic::dec code | |
984 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
985 Atomic::dec(&os::Solaris::_os_thread_count); | |
986 } | |
987 | |
988 if (UseDetachedThreads) { | |
989 thr_exit(NULL); | |
990 ShouldNotReachHere(); | |
991 } | |
992 return NULL; | |
993 } | |
994 | |
995 static OSThread* create_os_thread(Thread* thread, thread_t thread_id) { | |
996 // Allocate the OSThread object | |
997 OSThread* osthread = new OSThread(NULL, NULL); | |
998 if (osthread == NULL) return NULL; | |
999 | |
1000 // Store info on the Solaris thread into the OSThread | |
1001 osthread->set_thread_id(thread_id); | |
1002 osthread->set_lwp_id(_lwp_self()); | |
1003 thread->_schedctl = (void *) schedctl_init () ; | |
1004 | |
1005 if (UseNUMA) { | |
1006 int lgrp_id = os::numa_get_group_id(); | |
1007 if (lgrp_id != -1) { | |
1008 thread->set_lgrp_id(lgrp_id); | |
1009 } | |
1010 } | |
1011 | |
1012 if ( ThreadPriorityVerbose ) { | |
1013 tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n", | |
1014 osthread->thread_id(), osthread->lwp_id() ); | |
1015 } | |
1016 | |
1017 // Initial thread state is INITIALIZED, not SUSPENDED | |
1018 osthread->set_state(INITIALIZED); | |
1019 | |
1020 return osthread; | |
1021 } | |
1022 | |
1023 void os::Solaris::hotspot_sigmask(Thread* thread) { | |
1024 | |
1025 //Save caller's signal mask | |
1026 sigset_t sigmask; | |
1027 thr_sigsetmask(SIG_SETMASK, NULL, &sigmask); | |
1028 OSThread *osthread = thread->osthread(); | |
1029 osthread->set_caller_sigmask(sigmask); | |
1030 | |
1031 thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL); | |
1032 if (!ReduceSignalUsage) { | |
1033 if (thread->is_VM_thread()) { | |
1034 // Only the VM thread handles BREAK_SIGNAL ... | |
1035 thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL); | |
1036 } else { | |
1037 // ... all other threads block BREAK_SIGNAL | |
1038 assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked"); | |
1039 thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL); | |
1040 } | |
1041 } | |
1042 } | |
1043 | |
1044 bool os::create_attached_thread(JavaThread* thread) { | |
1045 #ifdef ASSERT | |
1046 thread->verify_not_published(); | |
1047 #endif | |
1048 OSThread* osthread = create_os_thread(thread, thr_self()); | |
1049 if (osthread == NULL) { | |
1050 return false; | |
1051 } | |
1052 | |
1053 // Initial thread state is RUNNABLE | |
1054 osthread->set_state(RUNNABLE); | |
1055 thread->set_osthread(osthread); | |
1056 | |
1057 // initialize signal mask for this thread | |
1058 // and save the caller's signal mask | |
1059 os::Solaris::hotspot_sigmask(thread); | |
1060 | |
1061 return true; | |
1062 } | |
1063 | |
1064 bool os::create_main_thread(JavaThread* thread) { | |
1065 #ifdef ASSERT | |
1066 thread->verify_not_published(); | |
1067 #endif | |
1068 if (_starting_thread == NULL) { | |
1069 _starting_thread = create_os_thread(thread, main_thread); | |
1070 if (_starting_thread == NULL) { | |
1071 return false; | |
1072 } | |
1073 } | |
1074 | |
1075 // The primodial thread is runnable from the start | |
1076 _starting_thread->set_state(RUNNABLE); | |
1077 | |
1078 thread->set_osthread(_starting_thread); | |
1079 | |
1080 // initialize signal mask for this thread | |
1081 // and save the caller's signal mask | |
1082 os::Solaris::hotspot_sigmask(thread); | |
1083 | |
1084 return true; | |
1085 } | |
1086 | |
1087 // _T2_libthread is true if we believe we are running with the newer | |
1088 // SunSoft lwp/libthread.so (2.8 patch, 2.9 default) | |
1089 bool os::Solaris::_T2_libthread = false; | |
1090 | |
1091 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
1092 // Allocate the OSThread object | |
1093 OSThread* osthread = new OSThread(NULL, NULL); | |
1094 if (osthread == NULL) { | |
1095 return false; | |
1096 } | |
1097 | |
1098 if ( ThreadPriorityVerbose ) { | |
1099 char *thrtyp; | |
1100 switch ( thr_type ) { | |
1101 case vm_thread: | |
1102 thrtyp = (char *)"vm"; | |
1103 break; | |
1104 case cgc_thread: | |
1105 thrtyp = (char *)"cgc"; | |
1106 break; | |
1107 case pgc_thread: | |
1108 thrtyp = (char *)"pgc"; | |
1109 break; | |
1110 case java_thread: | |
1111 thrtyp = (char *)"java"; | |
1112 break; | |
1113 case compiler_thread: | |
1114 thrtyp = (char *)"compiler"; | |
1115 break; | |
1116 case watcher_thread: | |
1117 thrtyp = (char *)"watcher"; | |
1118 break; | |
1119 default: | |
1120 thrtyp = (char *)"unknown"; | |
1121 break; | |
1122 } | |
1123 tty->print_cr("In create_thread, creating a %s thread\n", thrtyp); | |
1124 } | |
1125 | |
1126 // Calculate stack size if it's not specified by caller. | |
1127 if (stack_size == 0) { | |
1128 // The default stack size 1M (2M for LP64). | |
1129 stack_size = (BytesPerWord >> 2) * K * K; | |
1130 | |
1131 switch (thr_type) { | |
1132 case os::java_thread: | |
1133 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
1134 if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create(); | |
1135 break; | |
1136 case os::compiler_thread: | |
1137 if (CompilerThreadStackSize > 0) { | |
1138 stack_size = (size_t)(CompilerThreadStackSize * K); | |
1139 break; | |
1140 } // else fall through: | |
1141 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
1142 case os::vm_thread: | |
1143 case os::pgc_thread: | |
1144 case os::cgc_thread: | |
1145 case os::watcher_thread: | |
1146 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
1147 break; | |
1148 } | |
1149 } | |
1150 stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed); | |
1151 | |
1152 // Initial state is ALLOCATED but not INITIALIZED | |
1153 osthread->set_state(ALLOCATED); | |
1154 | |
1155 if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) { | |
1156 // We got lots of threads. Check if we still have some address space left. | |
1157 // Need to be at least 5Mb of unreserved address space. We do check by | |
1158 // trying to reserve some. | |
1159 const size_t VirtualMemoryBangSize = 20*K*K; | |
1160 char* mem = os::reserve_memory(VirtualMemoryBangSize); | |
1161 if (mem == NULL) { | |
1162 delete osthread; | |
1163 return false; | |
1164 } else { | |
1165 // Release the memory again | |
1166 os::release_memory(mem, VirtualMemoryBangSize); | |
1167 } | |
1168 } | |
1169 | |
1170 // Setup osthread because the child thread may need it. | |
1171 thread->set_osthread(osthread); | |
1172 | |
1173 // Create the Solaris thread | |
1174 // explicit THR_BOUND for T2_libthread case in case | |
1175 // that assumption is not accurate, but our alternate signal stack | |
1176 // handling is based on it which must have bound threads | |
1177 thread_t tid = 0; | |
1178 long flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED | |
1179 | ((UseBoundThreads || os::Solaris::T2_libthread() || | |
1180 (thr_type == vm_thread) || | |
1181 (thr_type == cgc_thread) || | |
1182 (thr_type == pgc_thread) || | |
1183 (thr_type == compiler_thread && BackgroundCompilation)) ? | |
1184 THR_BOUND : 0); | |
1185 int status; | |
1186 | |
1187 // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs. | |
1188 // | |
1189 // On multiprocessors systems, libthread sometimes under-provisions our | |
1190 // process with LWPs. On a 30-way systems, for instance, we could have | |
1191 // 50 user-level threads in ready state and only 2 or 3 LWPs assigned | |
1192 // to our process. This can result in under utilization of PEs. | |
1193 // I suspect the problem is related to libthread's LWP | |
1194 // pool management and to the kernel's SIGBLOCKING "last LWP parked" | |
1195 // upcall policy. | |
1196 // | |
1197 // The following code is palliative -- it attempts to ensure that our | |
1198 // process has sufficient LWPs to take advantage of multiple PEs. | |
1199 // Proper long-term cures include using user-level threads bound to LWPs | |
1200 // (THR_BOUND) or using LWP-based synchronization. Note that there is a | |
1201 // slight timing window with respect to sampling _os_thread_count, but | |
1202 // the race is benign. Also, we should periodically recompute | |
1203 // _processors_online as the min of SC_NPROCESSORS_ONLN and the | |
1204 // the number of PEs in our partition. You might be tempted to use | |
1205 // THR_NEW_LWP here, but I'd recommend against it as that could | |
1206 // result in undesirable growth of the libthread's LWP pool. | |
1207 // The fix below isn't sufficient; for instance, it doesn't take into count | |
1208 // LWPs parked on IO. It does, however, help certain CPU-bound benchmarks. | |
1209 // | |
1210 // Some pathologies this scheme doesn't handle: | |
1211 // * Threads can block, releasing the LWPs. The LWPs can age out. | |
1212 // When a large number of threads become ready again there aren't | |
1213 // enough LWPs available to service them. This can occur when the | |
1214 // number of ready threads oscillates. | |
1215 // * LWPs/Threads park on IO, thus taking the LWP out of circulation. | |
1216 // | |
1217 // Finally, we should call thr_setconcurrency() periodically to refresh | |
1218 // the LWP pool and thwart the LWP age-out mechanism. | |
1219 // The "+3" term provides a little slop -- we want to slightly overprovision. | |
1220 | |
1221 if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) { | |
1222 if (!(flags & THR_BOUND)) { | |
1223 thr_setconcurrency (os::Solaris::_os_thread_count); // avoid starvation | |
1224 } | |
1225 } | |
1226 // Although this doesn't hurt, we should warn of undefined behavior | |
1227 // when using unbound T1 threads with schedctl(). This should never | |
1228 // happen, as the compiler and VM threads are always created bound | |
1229 DEBUG_ONLY( | |
1230 if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) && | |
1231 (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) && | |
1232 ((thr_type == vm_thread) || (thr_type == cgc_thread) || | |
1233 (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) { | |
1234 warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound"); | |
1235 } | |
1236 ); | |
1237 | |
1238 | |
1239 // Mark that we don't have an lwp or thread id yet. | |
1240 // In case we attempt to set the priority before the thread starts. | |
1241 osthread->set_lwp_id(-1); | |
1242 osthread->set_thread_id(-1); | |
1243 | |
1244 status = thr_create(NULL, stack_size, java_start, thread, flags, &tid); | |
1245 if (status != 0) { | |
1246 if (PrintMiscellaneous && (Verbose || WizardMode)) { | |
1247 perror("os::create_thread"); | |
1248 } | |
1249 thread->set_osthread(NULL); | |
1250 // Need to clean up stuff we've allocated so far | |
1251 delete osthread; | |
1252 return false; | |
1253 } | |
1254 | |
1255 Atomic::inc(&os::Solaris::_os_thread_count); | |
1256 | |
1257 // Store info on the Solaris thread into the OSThread | |
1258 osthread->set_thread_id(tid); | |
1259 | |
1260 // Remember that we created this thread so we can set priority on it | |
1261 osthread->set_vm_created(); | |
1262 | |
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1263 // Set the default thread priority. If using bound threads, setting |
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1264 // lwp priority will be delayed until thread start. |
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1265 set_native_priority(thread, |
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1266 DefaultThreadPriority == -1 ? |
0 | 1267 java_to_os_priority[NormPriority] : |
1268 DefaultThreadPriority); | |
1269 | |
1270 // Initial thread state is INITIALIZED, not SUSPENDED | |
1271 osthread->set_state(INITIALIZED); | |
1272 | |
1273 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
1274 return true; | |
1275 } | |
1276 | |
1277 /* defined for >= Solaris 10. This allows builds on earlier versions | |
1278 * of Solaris to take advantage of the newly reserved Solaris JVM signals | |
1279 * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2 | |
1280 * and -XX:+UseAltSigs does nothing since these should have no conflict | |
1281 */ | |
1282 #if !defined(SIGJVM1) | |
1283 #define SIGJVM1 39 | |
1284 #define SIGJVM2 40 | |
1285 #endif | |
1286 | |
1287 debug_only(static bool signal_sets_initialized = false); | |
1288 static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; | |
1289 int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL; | |
1290 int os::Solaris::_SIGasync = ASYNC_SIGNAL; | |
1291 | |
1292 bool os::Solaris::is_sig_ignored(int sig) { | |
1293 struct sigaction oact; | |
1294 sigaction(sig, (struct sigaction*)NULL, &oact); | |
1295 void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) | |
1296 : CAST_FROM_FN_PTR(void*, oact.sa_handler); | |
1297 if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) | |
1298 return true; | |
1299 else | |
1300 return false; | |
1301 } | |
1302 | |
1303 // Note: SIGRTMIN is a macro that calls sysconf() so it will | |
1304 // dynamically detect SIGRTMIN value for the system at runtime, not buildtime | |
1305 static bool isJVM1available() { | |
1306 return SIGJVM1 < SIGRTMIN; | |
1307 } | |
1308 | |
1309 void os::Solaris::signal_sets_init() { | |
1310 // Should also have an assertion stating we are still single-threaded. | |
1311 assert(!signal_sets_initialized, "Already initialized"); | |
1312 // Fill in signals that are necessarily unblocked for all threads in | |
1313 // the VM. Currently, we unblock the following signals: | |
1314 // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden | |
1315 // by -Xrs (=ReduceSignalUsage)); | |
1316 // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all | |
1317 // other threads. The "ReduceSignalUsage" boolean tells us not to alter | |
1318 // the dispositions or masks wrt these signals. | |
1319 // Programs embedding the VM that want to use the above signals for their | |
1320 // own purposes must, at this time, use the "-Xrs" option to prevent | |
1321 // interference with shutdown hooks and BREAK_SIGNAL thread dumping. | |
1322 // (See bug 4345157, and other related bugs). | |
1323 // In reality, though, unblocking these signals is really a nop, since | |
1324 // these signals are not blocked by default. | |
1325 sigemptyset(&unblocked_sigs); | |
1326 sigemptyset(&allowdebug_blocked_sigs); | |
1327 sigaddset(&unblocked_sigs, SIGILL); | |
1328 sigaddset(&unblocked_sigs, SIGSEGV); | |
1329 sigaddset(&unblocked_sigs, SIGBUS); | |
1330 sigaddset(&unblocked_sigs, SIGFPE); | |
1331 | |
1332 if (isJVM1available) { | |
1333 os::Solaris::set_SIGinterrupt(SIGJVM1); | |
1334 os::Solaris::set_SIGasync(SIGJVM2); | |
1335 } else if (UseAltSigs) { | |
1336 os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL); | |
1337 os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL); | |
1338 } else { | |
1339 os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL); | |
1340 os::Solaris::set_SIGasync(ASYNC_SIGNAL); | |
1341 } | |
1342 | |
1343 sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt()); | |
1344 sigaddset(&unblocked_sigs, os::Solaris::SIGasync()); | |
1345 | |
1346 if (!ReduceSignalUsage) { | |
1347 if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) { | |
1348 sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); | |
1349 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL); | |
1350 } | |
1351 if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) { | |
1352 sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); | |
1353 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL); | |
1354 } | |
1355 if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) { | |
1356 sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); | |
1357 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL); | |
1358 } | |
1359 } | |
1360 // Fill in signals that are blocked by all but the VM thread. | |
1361 sigemptyset(&vm_sigs); | |
1362 if (!ReduceSignalUsage) | |
1363 sigaddset(&vm_sigs, BREAK_SIGNAL); | |
1364 debug_only(signal_sets_initialized = true); | |
1365 | |
1366 // For diagnostics only used in run_periodic_checks | |
1367 sigemptyset(&check_signal_done); | |
1368 } | |
1369 | |
1370 // These are signals that are unblocked while a thread is running Java. | |
1371 // (For some reason, they get blocked by default.) | |
1372 sigset_t* os::Solaris::unblocked_signals() { | |
1373 assert(signal_sets_initialized, "Not initialized"); | |
1374 return &unblocked_sigs; | |
1375 } | |
1376 | |
1377 // These are the signals that are blocked while a (non-VM) thread is | |
1378 // running Java. Only the VM thread handles these signals. | |
1379 sigset_t* os::Solaris::vm_signals() { | |
1380 assert(signal_sets_initialized, "Not initialized"); | |
1381 return &vm_sigs; | |
1382 } | |
1383 | |
1384 // These are signals that are blocked during cond_wait to allow debugger in | |
1385 sigset_t* os::Solaris::allowdebug_blocked_signals() { | |
1386 assert(signal_sets_initialized, "Not initialized"); | |
1387 return &allowdebug_blocked_sigs; | |
1388 } | |
1389 | |
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1390 |
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1391 void _handle_uncaught_cxx_exception() { |
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1392 VMError err("An uncaught C++ exception"); |
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1393 err.report_and_die(); |
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1394 } |
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1395 |
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1396 |
0 | 1397 // First crack at OS-specific initialization, from inside the new thread. |
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1398 void os::initialize_thread(Thread* thr) { |
0 | 1399 int r = thr_main() ; |
1400 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
1401 if (r) { | |
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1402 JavaThread* jt = (JavaThread *)thr; |
0 | 1403 assert(jt != NULL,"Sanity check"); |
1404 size_t stack_size; | |
1405 address base = jt->stack_base(); | |
1406 if (Arguments::created_by_java_launcher()) { | |
1407 // Use 2MB to allow for Solaris 7 64 bit mode. | |
1408 stack_size = JavaThread::stack_size_at_create() == 0 | |
1409 ? 2048*K : JavaThread::stack_size_at_create(); | |
1410 | |
1411 // There are rare cases when we may have already used more than | |
1412 // the basic stack size allotment before this method is invoked. | |
1413 // Attempt to allow for a normally sized java_stack. | |
1414 size_t current_stack_offset = (size_t)(base - (address)&stack_size); | |
1415 stack_size += ReservedSpace::page_align_size_down(current_stack_offset); | |
1416 } else { | |
1417 // 6269555: If we were not created by a Java launcher, i.e. if we are | |
1418 // running embedded in a native application, treat the primordial thread | |
1419 // as much like a native attached thread as possible. This means using | |
1420 // the current stack size from thr_stksegment(), unless it is too large | |
1421 // to reliably setup guard pages. A reasonable max size is 8MB. | |
1422 size_t current_size = current_stack_size(); | |
1423 // This should never happen, but just in case.... | |
1424 if (current_size == 0) current_size = 2 * K * K; | |
1425 stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size; | |
1426 } | |
1427 address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());; | |
1428 stack_size = (size_t)(base - bottom); | |
1429 | |
1430 assert(stack_size > 0, "Stack size calculation problem"); | |
1431 | |
1432 if (stack_size > jt->stack_size()) { | |
1433 NOT_PRODUCT( | |
1434 struct rlimit limits; | |
1435 getrlimit(RLIMIT_STACK, &limits); | |
1436 size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur); | |
1437 assert(size >= jt->stack_size(), "Stack size problem in main thread"); | |
1438 ) | |
1439 tty->print_cr( | |
1440 "Stack size of %d Kb exceeds current limit of %d Kb.\n" | |
1441 "(Stack sizes are rounded up to a multiple of the system page size.)\n" | |
1442 "See limit(1) to increase the stack size limit.", | |
1443 stack_size / K, jt->stack_size() / K); | |
1444 vm_exit(1); | |
1445 } | |
1446 assert(jt->stack_size() >= stack_size, | |
1447 "Attempt to map more stack than was allocated"); | |
1448 jt->set_stack_size(stack_size); | |
1449 } | |
1450 | |
1451 // 5/22/01: Right now alternate signal stacks do not handle | |
1452 // throwing stack overflow exceptions, see bug 4463178 | |
1453 // Until a fix is found for this, T2 will NOT imply alternate signal | |
1454 // stacks. | |
1455 // If using T2 libthread threads, install an alternate signal stack. | |
1456 // Because alternate stacks associate with LWPs on Solaris, | |
1457 // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads | |
1458 // we prefer to explicitly stack bang. | |
1459 // If not using T2 libthread, but using UseBoundThreads any threads | |
1460 // (primordial thread, jni_attachCurrentThread) we do not create, | |
1461 // probably are not bound, therefore they can not have an alternate | |
1462 // signal stack. Since our stack banging code is generated and | |
1463 // is shared across threads, all threads must be bound to allow | |
1464 // using alternate signal stacks. The alternative is to interpose | |
1465 // on _lwp_create to associate an alt sig stack with each LWP, | |
1466 // and this could be a problem when the JVM is embedded. | |
1467 // We would prefer to use alternate signal stacks with T2 | |
1468 // Since there is currently no accurate way to detect T2 | |
1469 // we do not. Assuming T2 when running T1 causes sig 11s or assertions | |
1470 // on installing alternate signal stacks | |
1471 | |
1472 | |
1473 // 05/09/03: removed alternate signal stack support for Solaris | |
1474 // The alternate signal stack mechanism is no longer needed to | |
1475 // handle stack overflow. This is now handled by allocating | |
1476 // guard pages (red zone) and stackbanging. | |
1477 // Initially the alternate signal stack mechanism was removed because | |
1478 // it did not work with T1 llibthread. Alternate | |
1479 // signal stacks MUST have all threads bound to lwps. Applications | |
1480 // can create their own threads and attach them without their being | |
1481 // bound under T1. This is frequently the case for the primordial thread. | |
1482 // If we were ever to reenable this mechanism we would need to | |
1483 // use the dynamic check for T2 libthread. | |
1484 | |
1485 os::Solaris::init_thread_fpu_state(); | |
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1486 std::set_terminate(_handle_uncaught_cxx_exception); |
0 | 1487 } |
1488 | |
1489 | |
1490 | |
1491 // Free Solaris resources related to the OSThread | |
1492 void os::free_thread(OSThread* osthread) { | |
1493 assert(osthread != NULL, "os::free_thread but osthread not set"); | |
1494 | |
1495 | |
1496 // We are told to free resources of the argument thread, | |
1497 // but we can only really operate on the current thread. | |
1498 // The main thread must take the VMThread down synchronously | |
1499 // before the main thread exits and frees up CodeHeap | |
1500 guarantee((Thread::current()->osthread() == osthread | |
1501 || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread"); | |
1502 if (Thread::current()->osthread() == osthread) { | |
1503 // Restore caller's signal mask | |
1504 sigset_t sigmask = osthread->caller_sigmask(); | |
1505 thr_sigsetmask(SIG_SETMASK, &sigmask, NULL); | |
1506 } | |
1507 delete osthread; | |
1508 } | |
1509 | |
1510 void os::pd_start_thread(Thread* thread) { | |
1511 int status = thr_continue(thread->osthread()->thread_id()); | |
1512 assert_status(status == 0, status, "thr_continue failed"); | |
1513 } | |
1514 | |
1515 | |
1516 intx os::current_thread_id() { | |
1517 return (intx)thr_self(); | |
1518 } | |
1519 | |
1520 static pid_t _initial_pid = 0; | |
1521 | |
1522 int os::current_process_id() { | |
1523 return (int)(_initial_pid ? _initial_pid : getpid()); | |
1524 } | |
1525 | |
1526 int os::allocate_thread_local_storage() { | |
1527 // %%% in Win32 this allocates a memory segment pointed to by a | |
1528 // register. Dan Stein can implement a similar feature in | |
1529 // Solaris. Alternatively, the VM can do the same thing | |
1530 // explicitly: malloc some storage and keep the pointer in a | |
1531 // register (which is part of the thread's context) (or keep it | |
1532 // in TLS). | |
1533 // %%% In current versions of Solaris, thr_self and TSD can | |
1534 // be accessed via short sequences of displaced indirections. | |
1535 // The value of thr_self is available as %g7(36). | |
1536 // The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4), | |
1537 // assuming that the current thread already has a value bound to k. | |
1538 // It may be worth experimenting with such access patterns, | |
1539 // and later having the parameters formally exported from a Solaris | |
1540 // interface. I think, however, that it will be faster to | |
1541 // maintain the invariant that %g2 always contains the | |
1542 // JavaThread in Java code, and have stubs simply | |
1543 // treat %g2 as a caller-save register, preserving it in a %lN. | |
1544 thread_key_t tk; | |
1545 if (thr_keycreate( &tk, NULL ) ) | |
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1546 fatal(err_msg("os::allocate_thread_local_storage: thr_keycreate failed " |
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1547 "(%s)", strerror(errno))); |
0 | 1548 return int(tk); |
1549 } | |
1550 | |
1551 void os::free_thread_local_storage(int index) { | |
1552 // %%% don't think we need anything here | |
1553 // if ( pthread_key_delete((pthread_key_t) tk) ) | |
1554 // fatal("os::free_thread_local_storage: pthread_key_delete failed"); | |
1555 } | |
1556 | |
1557 #define SMALLINT 32 // libthread allocate for tsd_common is a version specific | |
1558 // small number - point is NO swap space available | |
1559 void os::thread_local_storage_at_put(int index, void* value) { | |
1560 // %%% this is used only in threadLocalStorage.cpp | |
1561 if (thr_setspecific((thread_key_t)index, value)) { | |
1562 if (errno == ENOMEM) { | |
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1563 vm_exit_out_of_memory(SMALLINT, OOM_MALLOC_ERROR, |
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1564 "thr_setspecific: out of swap space"); |
0 | 1565 } else { |
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1566 fatal(err_msg("os::thread_local_storage_at_put: thr_setspecific failed " |
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1567 "(%s)", strerror(errno))); |
0 | 1568 } |
1569 } else { | |
1570 ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ; | |
1571 } | |
1572 } | |
1573 | |
1574 // This function could be called before TLS is initialized, for example, when | |
1575 // VM receives an async signal or when VM causes a fatal error during | |
1576 // initialization. Return NULL if thr_getspecific() fails. | |
1577 void* os::thread_local_storage_at(int index) { | |
1578 // %%% this is used only in threadLocalStorage.cpp | |
1579 void* r = NULL; | |
1580 return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r; | |
1581 } | |
1582 | |
1583 | |
1584 // gethrtime can move backwards if read from one cpu and then a different cpu | |
1585 // getTimeNanos is guaranteed to not move backward on Solaris | |
1586 // local spinloop created as faster for a CAS on an int than | |
1587 // a CAS on a 64bit jlong. Also Atomic::cmpxchg for jlong is not | |
1588 // supported on sparc v8 or pre supports_cx8 intel boxes. | |
1589 // oldgetTimeNanos for systems which do not support CAS on 64bit jlong | |
1590 // i.e. sparc v8 and pre supports_cx8 (i486) intel boxes | |
1591 inline hrtime_t oldgetTimeNanos() { | |
1592 int gotlock = LOCK_INVALID; | |
1593 hrtime_t newtime = gethrtime(); | |
1594 | |
1595 for (;;) { | |
1596 // grab lock for max_hrtime | |
1597 int curlock = max_hrtime_lock; | |
1598 if (curlock & LOCK_BUSY) continue; | |
1599 if (gotlock = Atomic::cmpxchg(LOCK_BUSY, &max_hrtime_lock, LOCK_FREE) != LOCK_FREE) continue; | |
1600 if (newtime > max_hrtime) { | |
1601 max_hrtime = newtime; | |
1602 } else { | |
1603 newtime = max_hrtime; | |
1604 } | |
1605 // release lock | |
1606 max_hrtime_lock = LOCK_FREE; | |
1607 return newtime; | |
1608 } | |
1609 } | |
1610 // gethrtime can move backwards if read from one cpu and then a different cpu | |
1611 // getTimeNanos is guaranteed to not move backward on Solaris | |
1612 inline hrtime_t getTimeNanos() { | |
1613 if (VM_Version::supports_cx8()) { | |
499 | 1614 const hrtime_t now = gethrtime(); |
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1615 // Use atomic long load since 32-bit x86 uses 2 registers to keep long. |
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1616 const hrtime_t prev = Atomic::load((volatile jlong*)&max_hrtime); |
499 | 1617 if (now <= prev) return prev; // same or retrograde time; |
1618 const hrtime_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&max_hrtime, prev); | |
1619 assert(obsv >= prev, "invariant"); // Monotonicity | |
1620 // If the CAS succeeded then we're done and return "now". | |
1621 // If the CAS failed and the observed value "obs" is >= now then | |
1622 // we should return "obs". If the CAS failed and now > obs > prv then | |
1623 // some other thread raced this thread and installed a new value, in which case | |
1624 // we could either (a) retry the entire operation, (b) retry trying to install now | |
1625 // or (c) just return obs. We use (c). No loop is required although in some cases | |
1626 // we might discard a higher "now" value in deference to a slightly lower but freshly | |
1627 // installed obs value. That's entirely benign -- it admits no new orderings compared | |
1628 // to (a) or (b) -- and greatly reduces coherence traffic. | |
1629 // We might also condition (c) on the magnitude of the delta between obs and now. | |
1630 // Avoiding excessive CAS operations to hot RW locations is critical. | |
1631 // See http://blogs.sun.com/dave/entry/cas_and_cache_trivia_invalidate | |
1632 return (prev == obsv) ? now : obsv ; | |
0 | 1633 } else { |
1634 return oldgetTimeNanos(); | |
1635 } | |
1636 } | |
1637 | |
1638 // Time since start-up in seconds to a fine granularity. | |
1639 // Used by VMSelfDestructTimer and the MemProfiler. | |
1640 double os::elapsedTime() { | |
1641 return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz; | |
1642 } | |
1643 | |
1644 jlong os::elapsed_counter() { | |
1645 return (jlong)(getTimeNanos() - first_hrtime); | |
1646 } | |
1647 | |
1648 jlong os::elapsed_frequency() { | |
1649 return hrtime_hz; | |
1650 } | |
1651 | |
1652 // Return the real, user, and system times in seconds from an | |
1653 // arbitrary fixed point in the past. | |
1654 bool os::getTimesSecs(double* process_real_time, | |
1655 double* process_user_time, | |
1656 double* process_system_time) { | |
1657 struct tms ticks; | |
1658 clock_t real_ticks = times(&ticks); | |
1659 | |
1660 if (real_ticks == (clock_t) (-1)) { | |
1661 return false; | |
1662 } else { | |
1663 double ticks_per_second = (double) clock_tics_per_sec; | |
1664 *process_user_time = ((double) ticks.tms_utime) / ticks_per_second; | |
1665 *process_system_time = ((double) ticks.tms_stime) / ticks_per_second; | |
1666 // For consistency return the real time from getTimeNanos() | |
1667 // converted to seconds. | |
1668 *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS); | |
1669 | |
1670 return true; | |
1671 } | |
1672 } | |
1673 | |
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1674 bool os::supports_vtime() { return true; } |
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1675 |
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1676 bool os::enable_vtime() { |
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1677 int fd = ::open("/proc/self/ctl", O_WRONLY); |
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1678 if (fd == -1) |
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1679 return false; |
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1680 |
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1681 long cmd[] = { PCSET, PR_MSACCT }; |
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1682 int res = ::write(fd, cmd, sizeof(long) * 2); |
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1683 ::close(fd); |
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1684 if (res != sizeof(long) * 2) |
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1685 return false; |
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1686 |
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1687 return true; |
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1688 } |
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1689 |
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1690 bool os::vtime_enabled() { |
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1691 int fd = ::open("/proc/self/status", O_RDONLY); |
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1692 if (fd == -1) |
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1693 return false; |
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1694 |
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1695 pstatus_t status; |
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1696 int res = os::read(fd, (void*) &status, sizeof(pstatus_t)); |
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1697 ::close(fd); |
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1698 if (res != sizeof(pstatus_t)) |
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1699 return false; |
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1700 |
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1701 return status.pr_flags & PR_MSACCT; |
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1702 } |
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1703 |
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1704 double os::elapsedVTime() { |
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1705 return (double)gethrvtime() / (double)hrtime_hz; |
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1706 } |
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1707 |
0 | 1708 // Used internally for comparisons only |
1709 // getTimeMillis guaranteed to not move backwards on Solaris | |
1710 jlong getTimeMillis() { | |
1711 jlong nanotime = getTimeNanos(); | |
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1712 return (jlong)(nanotime / NANOSECS_PER_MILLISEC); |
0 | 1713 } |
1714 | |
61 | 1715 // Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis |
1716 jlong os::javaTimeMillis() { | |
0 | 1717 timeval t; |
1718 if (gettimeofday( &t, NULL) == -1) | |
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1719 fatal(err_msg("os::javaTimeMillis: gettimeofday (%s)", strerror(errno))); |
0 | 1720 return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000; |
1721 } | |
1722 | |
1723 jlong os::javaTimeNanos() { | |
1724 return (jlong)getTimeNanos(); | |
1725 } | |
1726 | |
1727 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
1728 info_ptr->max_value = ALL_64_BITS; // gethrtime() uses all 64 bits | |
1729 info_ptr->may_skip_backward = false; // not subject to resetting or drifting | |
1730 info_ptr->may_skip_forward = false; // not subject to resetting or drifting | |
1731 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
1732 } | |
1733 | |
1734 char * os::local_time_string(char *buf, size_t buflen) { | |
1735 struct tm t; | |
1736 time_t long_time; | |
1737 time(&long_time); | |
1738 localtime_r(&long_time, &t); | |
1739 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
1740 t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, | |
1741 t.tm_hour, t.tm_min, t.tm_sec); | |
1742 return buf; | |
1743 } | |
1744 | |
1745 // Note: os::shutdown() might be called very early during initialization, or | |
1746 // called from signal handler. Before adding something to os::shutdown(), make | |
1747 // sure it is async-safe and can handle partially initialized VM. | |
1748 void os::shutdown() { | |
1749 | |
1750 // allow PerfMemory to attempt cleanup of any persistent resources | |
1751 perfMemory_exit(); | |
1752 | |
1753 // needs to remove object in file system | |
1754 AttachListener::abort(); | |
1755 | |
1756 // flush buffered output, finish log files | |
1757 ostream_abort(); | |
1758 | |
1759 // Check for abort hook | |
1760 abort_hook_t abort_hook = Arguments::abort_hook(); | |
1761 if (abort_hook != NULL) { | |
1762 abort_hook(); | |
1763 } | |
1764 } | |
1765 | |
1766 // Note: os::abort() might be called very early during initialization, or | |
1767 // called from signal handler. Before adding something to os::abort(), make | |
1768 // sure it is async-safe and can handle partially initialized VM. | |
1769 void os::abort(bool dump_core) { | |
1770 os::shutdown(); | |
1771 if (dump_core) { | |
1772 #ifndef PRODUCT | |
1773 fdStream out(defaultStream::output_fd()); | |
1774 out.print_raw("Current thread is "); | |
1775 char buf[16]; | |
1776 jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); | |
1777 out.print_raw_cr(buf); | |
1778 out.print_raw_cr("Dumping core ..."); | |
1779 #endif | |
1780 ::abort(); // dump core (for debugging) | |
1781 } | |
1782 | |
1783 ::exit(1); | |
1784 } | |
1785 | |
1786 // Die immediately, no exit hook, no abort hook, no cleanup. | |
1787 void os::die() { | |
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1788 ::abort(); // dump core (for debugging) |
0 | 1789 } |
1790 | |
1791 // unused | |
1792 void os::set_error_file(const char *logfile) {} | |
1793 | |
1794 // DLL functions | |
1795 | |
1796 const char* os::dll_file_extension() { return ".so"; } | |
1797 | |
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1798 // This must be hard coded because it's the system's temporary |
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1799 // directory not the java application's temp directory, ala java.io.tmpdir. |
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1800 const char* os::get_temp_directory() { return "/tmp"; } |
0 | 1801 |
691 | 1802 static bool file_exists(const char* filename) { |
1803 struct stat statbuf; | |
1804 if (filename == NULL || strlen(filename) == 0) { | |
1805 return false; | |
1806 } | |
1807 return os::stat(filename, &statbuf) == 0; | |
1808 } | |
1809 | |
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1810 bool os::dll_build_name(char* buffer, size_t buflen, |
691 | 1811 const char* pname, const char* fname) { |
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1812 bool retval = false; |
242 | 1813 const size_t pnamelen = pname ? strlen(pname) : 0; |
1814 | |
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1815 // Return error on buffer overflow. |
242 | 1816 if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { |
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1817 return retval; |
242 | 1818 } |
1819 | |
1820 if (pnamelen == 0) { | |
691 | 1821 snprintf(buffer, buflen, "lib%s.so", fname); |
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1822 retval = true; |
691 | 1823 } else if (strchr(pname, *os::path_separator()) != NULL) { |
1824 int n; | |
1825 char** pelements = split_path(pname, &n); | |
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1826 if (pelements == NULL) { |
9062 | 1827 return false; |
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1828 } |
691 | 1829 for (int i = 0 ; i < n ; i++) { |
1830 // really shouldn't be NULL but what the heck, check can't hurt | |
1831 if (pelements[i] == NULL || strlen(pelements[i]) == 0) { | |
1832 continue; // skip the empty path values | |
1833 } | |
1834 snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname); | |
1835 if (file_exists(buffer)) { | |
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1836 retval = true; |
691 | 1837 break; |
1838 } | |
1839 } | |
1840 // release the storage | |
1841 for (int i = 0 ; i < n ; i++) { | |
1842 if (pelements[i] != NULL) { | |
6197 | 1843 FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); |
691 | 1844 } |
1845 } | |
1846 if (pelements != NULL) { | |
6197 | 1847 FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); |
691 | 1848 } |
242 | 1849 } else { |
691 | 1850 snprintf(buffer, buflen, "%s/lib%s.so", pname, fname); |
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1851 retval = true; |
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1852 } |
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1853 return retval; |
242 | 1854 } |
1855 | |
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1856 // check if addr is inside libjvm.so |
0 | 1857 bool os::address_is_in_vm(address addr) { |
1858 static address libjvm_base_addr; | |
1859 Dl_info dlinfo; | |
1860 | |
1861 if (libjvm_base_addr == NULL) { | |
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1862 if (dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo) != 0) { |
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1863 libjvm_base_addr = (address)dlinfo.dli_fbase; |
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1864 } |
0 | 1865 assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); |
1866 } | |
1867 | |
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1868 if (dladdr((void *)addr, &dlinfo) != 0) { |
0 | 1869 if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; |
1870 } | |
1871 | |
1872 return false; | |
1873 } | |
1874 | |
1875 typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int); | |
1876 static dladdr1_func_type dladdr1_func = NULL; | |
1877 | |
1878 bool os::dll_address_to_function_name(address addr, char *buf, | |
1879 int buflen, int * offset) { | |
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1880 // buf is not optional, but offset is optional |
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1881 assert(buf != NULL, "sanity check"); |
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1882 |
0 | 1883 Dl_info dlinfo; |
1884 | |
1885 // dladdr1_func was initialized in os::init() | |
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1886 if (dladdr1_func != NULL) { |
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1887 // yes, we have dladdr1 |
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1888 |
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1889 // Support for dladdr1 is checked at runtime; it may be |
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1890 // available even if the vm is built on a machine that does |
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1891 // not have dladdr1 support. Make sure there is a value for |
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1892 // RTLD_DL_SYMENT. |
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1893 #ifndef RTLD_DL_SYMENT |
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1894 #define RTLD_DL_SYMENT 1 |
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1895 #endif |
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1896 #ifdef _LP64 |
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1897 Elf64_Sym * info; |
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1898 #else |
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1899 Elf32_Sym * info; |
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1900 #endif |
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1901 if (dladdr1_func((void *)addr, &dlinfo, (void **)&info, |
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1902 RTLD_DL_SYMENT) != 0) { |
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1903 // see if we have a matching symbol that covers our address |
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1904 if (dlinfo.dli_saddr != NULL && |
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1905 (char *)dlinfo.dli_saddr + info->st_size > (char *)addr) { |
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1906 if (dlinfo.dli_sname != NULL) { |
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1907 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) { |
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1908 jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); |
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1909 } |
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1910 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
2022
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1911 return true; |
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1912 } |
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1913 } |
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1914 // no matching symbol so try for just file info |
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1915 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { |
2022
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1916 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
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1917 buf, buflen, offset, dlinfo.dli_fname)) { |
0 | 1918 return true; |
2022
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1919 } |
0 | 1920 } |
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1921 } |
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1922 buf[0] = '\0'; |
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1923 if (offset != NULL) *offset = -1; |
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1924 return false; |
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1925 } |
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1926 |
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1927 // no, only dladdr is available |
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1928 if (dladdr((void *)addr, &dlinfo) != 0) { |
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1929 // see if we have a matching symbol |
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1930 if (dlinfo.dli_saddr != NULL && dlinfo.dli_sname != NULL) { |
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1931 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) { |
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1932 jio_snprintf(buf, buflen, dlinfo.dli_sname); |
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1933 } |
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1934 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
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1935 return true; |
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1936 } |
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1937 // no matching symbol so try for just file info |
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1938 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { |
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1939 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
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1940 buf, buflen, offset, dlinfo.dli_fname)) { |
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1941 return true; |
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1942 } |
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1943 } |
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1944 } |
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1945 buf[0] = '\0'; |
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1946 if (offset != NULL) *offset = -1; |
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1947 return false; |
0 | 1948 } |
1949 | |
1950 bool os::dll_address_to_library_name(address addr, char* buf, | |
1951 int buflen, int* offset) { | |
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|
1952 // buf is not optional, but offset is optional |
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1953 assert(buf != NULL, "sanity check"); |
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1954 |
0 | 1955 Dl_info dlinfo; |
1956 | |
11092
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1957 if (dladdr((void*)addr, &dlinfo) != 0) { |
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1958 if (dlinfo.dli_fname != NULL) { |
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1959 jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); |
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|
1960 } |
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1961 if (dlinfo.dli_fbase != NULL && offset != NULL) { |
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1962 *offset = addr - (address)dlinfo.dli_fbase; |
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|
1963 } |
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|
1964 return true; |
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|
1965 } |
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|
1966 |
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|
1967 buf[0] = '\0'; |
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1968 if (offset) *offset = -1; |
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1969 return false; |
0 | 1970 } |
1971 | |
1972 // Prints the names and full paths of all opened dynamic libraries | |
1973 // for current process | |
1974 void os::print_dll_info(outputStream * st) { | |
11092
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1975 Dl_info dli; |
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|
1976 void *handle; |
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|
1977 Link_map *map; |
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|
1978 Link_map *p; |
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|
1979 |
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|
1980 st->print_cr("Dynamic libraries:"); st->flush(); |
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|
1981 |
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|
1982 if (dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli) == 0 || |
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|
1983 dli.dli_fname == NULL) { |
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|
1984 st->print_cr("Error: Cannot print dynamic libraries."); |
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|
1985 return; |
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|
1986 } |
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|
1987 handle = dlopen(dli.dli_fname, RTLD_LAZY); |
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|
1988 if (handle == NULL) { |
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|
1989 st->print_cr("Error: Cannot print dynamic libraries."); |
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|
1990 return; |
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|
1991 } |
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|
1992 dlinfo(handle, RTLD_DI_LINKMAP, &map); |
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|
1993 if (map == NULL) { |
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|
1994 st->print_cr("Error: Cannot print dynamic libraries."); |
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|
1995 return; |
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|
1996 } |
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|
1997 |
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|
1998 while (map->l_prev != NULL) |
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|
1999 map = map->l_prev; |
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|
2000 |
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|
2001 while (map != NULL) { |
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|
2002 st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name); |
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|
2003 map = map->l_next; |
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|
2004 } |
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|
2005 |
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|
2006 dlclose(handle); |
0 | 2007 } |
2008 | |
2009 // Loads .dll/.so and | |
2010 // in case of error it checks if .dll/.so was built for the | |
2011 // same architecture as Hotspot is running on | |
2012 | |
2013 void * os::dll_load(const char *filename, char *ebuf, int ebuflen) | |
2014 { | |
2015 void * result= ::dlopen(filename, RTLD_LAZY); | |
2016 if (result != NULL) { | |
2017 // Successful loading | |
2018 return result; | |
2019 } | |
2020 | |
2021 Elf32_Ehdr elf_head; | |
2022 | |
2023 // Read system error message into ebuf | |
2024 // It may or may not be overwritten below | |
2025 ::strncpy(ebuf, ::dlerror(), ebuflen-1); | |
2026 ebuf[ebuflen-1]='\0'; | |
2027 int diag_msg_max_length=ebuflen-strlen(ebuf); | |
2028 char* diag_msg_buf=ebuf+strlen(ebuf); | |
2029 | |
2030 if (diag_msg_max_length==0) { | |
2031 // No more space in ebuf for additional diagnostics message | |
2032 return NULL; | |
2033 } | |
2034 | |
2035 | |
2036 int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); | |
2037 | |
2038 if (file_descriptor < 0) { | |
2039 // Can't open library, report dlerror() message | |
2040 return NULL; | |
2041 } | |
2042 | |
2043 bool failed_to_read_elf_head= | |
2044 (sizeof(elf_head)!= | |
2045 (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ; | |
2046 | |
2047 ::close(file_descriptor); | |
2048 if (failed_to_read_elf_head) { | |
2049 // file i/o error - report dlerror() msg | |
2050 return NULL; | |
2051 } | |
2052 | |
2053 typedef struct { | |
2054 Elf32_Half code; // Actual value as defined in elf.h | |
2055 Elf32_Half compat_class; // Compatibility of archs at VM's sense | |
2056 char elf_class; // 32 or 64 bit | |
2057 char endianess; // MSB or LSB | |
2058 char* name; // String representation | |
2059 } arch_t; | |
2060 | |
2061 static const arch_t arch_array[]={ | |
2062 {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
2063 {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
2064 {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, | |
2065 {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, | |
2066 {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
2067 {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
2068 {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, | |
2069 {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, | |
1681
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|
2070 {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}, |
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|
2071 {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM 32"} |
0 | 2072 }; |
2073 | |
2074 #if (defined IA32) | |
2075 static Elf32_Half running_arch_code=EM_386; | |
2076 #elif (defined AMD64) | |
2077 static Elf32_Half running_arch_code=EM_X86_64; | |
2078 #elif (defined IA64) | |
2079 static Elf32_Half running_arch_code=EM_IA_64; | |
2080 #elif (defined __sparc) && (defined _LP64) | |
2081 static Elf32_Half running_arch_code=EM_SPARCV9; | |
2082 #elif (defined __sparc) && (!defined _LP64) | |
2083 static Elf32_Half running_arch_code=EM_SPARC; | |
2084 #elif (defined __powerpc64__) | |
2085 static Elf32_Half running_arch_code=EM_PPC64; | |
2086 #elif (defined __powerpc__) | |
2087 static Elf32_Half running_arch_code=EM_PPC; | |
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|
2088 #elif (defined ARM) |
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|
2089 static Elf32_Half running_arch_code=EM_ARM; |
0 | 2090 #else |
2091 #error Method os::dll_load requires that one of following is defined:\ | |
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2092 IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM |
0 | 2093 #endif |
2094 | |
2095 // Identify compatability class for VM's architecture and library's architecture | |
2096 // Obtain string descriptions for architectures | |
2097 | |
2098 arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; | |
2099 int running_arch_index=-1; | |
2100 | |
2101 for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) { | |
2102 if (running_arch_code == arch_array[i].code) { | |
2103 running_arch_index = i; | |
2104 } | |
2105 if (lib_arch.code == arch_array[i].code) { | |
2106 lib_arch.compat_class = arch_array[i].compat_class; | |
2107 lib_arch.name = arch_array[i].name; | |
2108 } | |
2109 } | |
2110 | |
2111 assert(running_arch_index != -1, | |
2112 "Didn't find running architecture code (running_arch_code) in arch_array"); | |
2113 if (running_arch_index == -1) { | |
2114 // Even though running architecture detection failed | |
2115 // we may still continue with reporting dlerror() message | |
2116 return NULL; | |
2117 } | |
2118 | |
2119 if (lib_arch.endianess != arch_array[running_arch_index].endianess) { | |
2120 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); | |
2121 return NULL; | |
2122 } | |
2123 | |
2124 if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { | |
2125 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); | |
2126 return NULL; | |
2127 } | |
2128 | |
2129 if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { | |
2130 if ( lib_arch.name!=NULL ) { | |
2131 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2132 " (Possible cause: can't load %s-bit .so on a %s-bit platform)", | |
2133 lib_arch.name, arch_array[running_arch_index].name); | |
2134 } else { | |
2135 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2136 " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", | |
2137 lib_arch.code, | |
2138 arch_array[running_arch_index].name); | |
2139 } | |
2140 } | |
2141 | |
2142 return NULL; | |
2143 } | |
2144 | |
242 | 2145 void* os::dll_lookup(void* handle, const char* name) { |
2146 return dlsym(handle, name); | |
2147 } | |
0 | 2148 |
1980
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|
2149 int os::stat(const char *path, struct stat *sbuf) { |
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diff
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|
2150 char pathbuf[MAX_PATH]; |
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diff
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|
2151 if (strlen(path) > MAX_PATH - 1) { |
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diff
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|
2152 errno = ENAMETOOLONG; |
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diff
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|
2153 return -1; |
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diff
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|
2154 } |
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diff
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|
2155 os::native_path(strcpy(pathbuf, path)); |
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diff
changeset
|
2156 return ::stat(pathbuf, sbuf); |
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diff
changeset
|
2157 } |
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diff
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|
2158 |
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diff
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|
2159 static bool _print_ascii_file(const char* filename, outputStream* st) { |
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diff
changeset
|
2160 int fd = ::open(filename, O_RDONLY); |
0 | 2161 if (fd == -1) { |
2162 return false; | |
2163 } | |
2164 | |
2165 char buf[32]; | |
2166 int bytes; | |
1980
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diff
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|
2167 while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) { |
0 | 2168 st->print_raw(buf, bytes); |
2169 } | |
2170 | |
1980
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|
2171 ::close(fd); |
0 | 2172 |
2173 return true; | |
2174 } | |
2175 | |
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|
2176 void os::print_os_info_brief(outputStream* st) { |
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|
2177 os::Solaris::print_distro_info(st); |
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|
2178 |
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|
2179 os::Posix::print_uname_info(st); |
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|
2180 |
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|
2181 os::Solaris::print_libversion_info(st); |
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|
2182 } |
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|
2183 |
0 | 2184 void os::print_os_info(outputStream* st) { |
2185 st->print("OS:"); | |
2186 | |
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|
2187 os::Solaris::print_distro_info(st); |
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|
2188 |
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|
2189 os::Posix::print_uname_info(st); |
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|
2190 |
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|
2191 os::Solaris::print_libversion_info(st); |
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|
2192 |
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|
2193 os::Posix::print_rlimit_info(st); |
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|
2194 |
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|
2195 os::Posix::print_load_average(st); |
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|
2196 } |
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|
2197 |
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|
2198 void os::Solaris::print_distro_info(outputStream* st) { |
0 | 2199 if (!_print_ascii_file("/etc/release", st)) { |
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changeset
|
2200 st->print("Solaris"); |
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7165755: OS Information much longer on linux than other platforms
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|
2201 } |
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|
2202 st->cr(); |
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diff
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|
2203 } |
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7165755: OS Information much longer on linux than other platforms
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diff
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|
2204 |
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7165755: OS Information much longer on linux than other platforms
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|
2205 void os::Solaris::print_libversion_info(outputStream* st) { |
7432b9db36ff
7165755: OS Information much longer on linux than other platforms
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|
2206 if (os::Solaris::T2_libthread()) { |
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5903
diff
changeset
|
2207 st->print(" (T2 libthread)"); |
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diff
changeset
|
2208 } |
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diff
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|
2209 else { |
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|
2210 st->print(" (T1 libthread)"); |
0 | 2211 } |
2212 st->cr(); | |
6080
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|
2213 } |
0 | 2214 |
2215 static bool check_addr0(outputStream* st) { | |
2216 jboolean status = false; | |
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2217 int fd = ::open("/proc/self/map",O_RDONLY); |
0 | 2218 if (fd >= 0) { |
2219 prmap_t p; | |
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2220 while(::read(fd, &p, sizeof(p)) > 0) { |
0 | 2221 if (p.pr_vaddr == 0x0) { |
2222 st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname); | |
2223 st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname); | |
2224 st->print("Access:"); | |
2225 st->print("%s",(p.pr_mflags & MA_READ) ? "r" : "-"); | |
2226 st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-"); | |
2227 st->print("%s",(p.pr_mflags & MA_EXEC) ? "x" : "-"); | |
2228 st->cr(); | |
2229 status = true; | |
2230 } | |
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|
2231 ::close(fd); |
0 | 2232 } |
2233 } | |
2234 return status; | |
2235 } | |
2236 | |
3800
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7061225: os::print_cpu_info() should support os-specific data
jcoomes
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diff
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|
2237 void os::pd_print_cpu_info(outputStream* st) { |
bf6481e5f96d
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|
2238 // Nothing to do for now. |
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|
2239 } |
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|
2240 |
0 | 2241 void os::print_memory_info(outputStream* st) { |
2242 st->print("Memory:"); | |
2243 st->print(" %dk page", os::vm_page_size()>>10); | |
2244 st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10); | |
2245 st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10); | |
2246 st->cr(); | |
2247 (void) check_addr0(st); | |
2248 } | |
2249 | |
2250 void os::print_siginfo(outputStream* st, void* siginfo) { | |
14410 | 2251 const siginfo_t* si = (const siginfo_t*)siginfo; |
2252 | |
2253 os::Posix::print_siginfo_brief(st, si); | |
2254 | |
2255 if (si && (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && | |
0 | 2256 UseSharedSpaces) { |
2257 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
2258 if (mapinfo->is_in_shared_space(si->si_addr)) { | |
2259 st->print("\n\nError accessing class data sharing archive." \ | |
2260 " Mapped file inaccessible during execution, " \ | |
2261 " possible disk/network problem."); | |
2262 } | |
2263 } | |
2264 st->cr(); | |
2265 } | |
2266 | |
2267 // Moved from whole group, because we need them here for diagnostic | |
2268 // prints. | |
2269 #define OLDMAXSIGNUM 32 | |
2270 static int Maxsignum = 0; | |
2271 static int *ourSigFlags = NULL; | |
2272 | |
2273 extern "C" void sigINTRHandler(int, siginfo_t*, void*); | |
2274 | |
2275 int os::Solaris::get_our_sigflags(int sig) { | |
2276 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2277 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2278 return ourSigFlags[sig]; | |
2279 } | |
2280 | |
2281 void os::Solaris::set_our_sigflags(int sig, int flags) { | |
2282 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2283 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2284 ourSigFlags[sig] = flags; | |
2285 } | |
2286 | |
2287 | |
2288 static const char* get_signal_handler_name(address handler, | |
2289 char* buf, int buflen) { | |
2290 int offset; | |
2291 bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); | |
2292 if (found) { | |
2293 // skip directory names | |
2294 const char *p1, *p2; | |
2295 p1 = buf; | |
2296 size_t len = strlen(os::file_separator()); | |
2297 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
2298 jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); | |
2299 } else { | |
2300 jio_snprintf(buf, buflen, PTR_FORMAT, handler); | |
2301 } | |
2302 return buf; | |
2303 } | |
2304 | |
2305 static void print_signal_handler(outputStream* st, int sig, | |
2306 char* buf, size_t buflen) { | |
2307 struct sigaction sa; | |
2308 | |
2309 sigaction(sig, NULL, &sa); | |
2310 | |
2311 st->print("%s: ", os::exception_name(sig, buf, buflen)); | |
2312 | |
2313 address handler = (sa.sa_flags & SA_SIGINFO) | |
2314 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) | |
2315 : CAST_FROM_FN_PTR(address, sa.sa_handler); | |
2316 | |
2317 if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { | |
2318 st->print("SIG_DFL"); | |
2319 } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { | |
2320 st->print("SIG_IGN"); | |
2321 } else { | |
2322 st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); | |
2323 } | |
2324 | |
14410 | 2325 st->print(", sa_mask[0]="); |
2326 os::Posix::print_signal_set_short(st, &sa.sa_mask); | |
0 | 2327 |
2328 address rh = VMError::get_resetted_sighandler(sig); | |
2329 // May be, handler was resetted by VMError? | |
2330 if(rh != NULL) { | |
2331 handler = rh; | |
2332 sa.sa_flags = VMError::get_resetted_sigflags(sig); | |
2333 } | |
2334 | |
14410 | 2335 st->print(", sa_flags="); |
2336 os::Posix::print_sa_flags(st, sa.sa_flags); | |
0 | 2337 |
2338 // Check: is it our handler? | |
2339 if(handler == CAST_FROM_FN_PTR(address, signalHandler) || | |
2340 handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) { | |
2341 // It is our signal handler | |
2342 // check for flags | |
2343 if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
2344 st->print( | |
2345 ", flags was changed from " PTR32_FORMAT ", consider using jsig library", | |
2346 os::Solaris::get_our_sigflags(sig)); | |
2347 } | |
2348 } | |
2349 st->cr(); | |
2350 } | |
2351 | |
2352 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
2353 st->print_cr("Signal Handlers:"); | |
2354 print_signal_handler(st, SIGSEGV, buf, buflen); | |
2355 print_signal_handler(st, SIGBUS , buf, buflen); | |
2356 print_signal_handler(st, SIGFPE , buf, buflen); | |
2357 print_signal_handler(st, SIGPIPE, buf, buflen); | |
2358 print_signal_handler(st, SIGXFSZ, buf, buflen); | |
2359 print_signal_handler(st, SIGILL , buf, buflen); | |
2360 print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen); | |
2361 print_signal_handler(st, ASYNC_SIGNAL, buf, buflen); | |
2362 print_signal_handler(st, BREAK_SIGNAL, buf, buflen); | |
2363 print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen); | |
2364 print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); | |
2365 print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen); | |
2366 print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen); | |
2367 print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen); | |
2368 } | |
2369 | |
2370 static char saved_jvm_path[MAXPATHLEN] = { 0 }; | |
2371 | |
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|
2372 // Find the full path to the current module, libjvm.so |
0 | 2373 void os::jvm_path(char *buf, jint buflen) { |
2374 // Error checking. | |
2375 if (buflen < MAXPATHLEN) { | |
2376 assert(false, "must use a large-enough buffer"); | |
2377 buf[0] = '\0'; | |
2378 return; | |
2379 } | |
2380 // Lazy resolve the path to current module. | |
2381 if (saved_jvm_path[0] != 0) { | |
2382 strcpy(buf, saved_jvm_path); | |
2383 return; | |
2384 } | |
2385 | |
2386 Dl_info dlinfo; | |
2387 int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo); | |
2388 assert(ret != 0, "cannot locate libjvm"); | |
11092
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8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
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|
2389 if (ret != 0 && dlinfo.dli_fname != NULL) { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
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|
2390 realpath((char *)dlinfo.dli_fname, buf); |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
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|
2391 } else { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
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|
2392 buf[0] = '\0'; |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
changeset
|
2393 return; |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
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10986
diff
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|
2394 } |
0 | 2395 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2191
diff
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|
2396 if (Arguments::created_by_gamma_launcher()) { |
0 | 2397 // Support for the gamma launcher. Typical value for buf is |
2398 // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at | |
2399 // the right place in the string, then assume we are installed in a JDK and | |
2400 // we're done. Otherwise, check for a JAVA_HOME environment variable and fix | |
2401 // up the path so it looks like libjvm.so is installed there (append a | |
2402 // fake suffix hotspot/libjvm.so). | |
2403 const char *p = buf + strlen(buf) - 1; | |
2404 for (int count = 0; p > buf && count < 5; ++count) { | |
2405 for (--p; p > buf && *p != '/'; --p) | |
2406 /* empty */ ; | |
2407 } | |
2408 | |
2409 if (strncmp(p, "/jre/lib/", 9) != 0) { | |
2410 // Look for JAVA_HOME in the environment. | |
2411 char* java_home_var = ::getenv("JAVA_HOME"); | |
2412 if (java_home_var != NULL && java_home_var[0] != 0) { | |
2413 char cpu_arch[12]; | |
1642 | 2414 char* jrelib_p; |
2415 int len; | |
0 | 2416 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
2417 #ifdef _LP64 | |
2418 // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9. | |
2419 if (strcmp(cpu_arch, "sparc") == 0) { | |
2420 strcat(cpu_arch, "v9"); | |
2421 } else if (strcmp(cpu_arch, "i386") == 0) { | |
2422 strcpy(cpu_arch, "amd64"); | |
2423 } | |
2424 #endif | |
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7206
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changeset
|
2425 // Check the current module name "libjvm.so". |
0 | 2426 p = strrchr(buf, '/'); |
2427 assert(strstr(p, "/libjvm") == p, "invalid library name"); | |
2428 | |
2429 realpath(java_home_var, buf); | |
1642 | 2430 // determine if this is a legacy image or modules image |
2431 // modules image doesn't have "jre" subdirectory | |
2432 len = strlen(buf); | |
2433 jrelib_p = buf + len; | |
2434 snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch); | |
2435 if (0 != access(buf, F_OK)) { | |
2436 snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch); | |
2437 } | |
2438 | |
0 | 2439 if (0 == access(buf, F_OK)) { |
7456
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dcubed
parents:
7206
diff
changeset
|
2440 // Use current module name "libjvm.so" |
1642 | 2441 len = strlen(buf); |
7456
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dcubed
parents:
7206
diff
changeset
|
2442 snprintf(buf + len, buflen-len, "/hotspot/libjvm.so"); |
0 | 2443 } else { |
2444 // Go back to path of .so | |
2445 realpath((char *)dlinfo.dli_fname, buf); | |
2446 } | |
2447 } | |
2448 } | |
2449 } | |
2450 | |
2451 strcpy(saved_jvm_path, buf); | |
2452 } | |
2453 | |
2454 | |
2455 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
2456 // no prefix required, not even "_" | |
2457 } | |
2458 | |
2459 | |
2460 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
2461 // no suffix required | |
2462 } | |
2463 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2464 // This method is a copy of JDK's sysGetLastErrorString |
828eafbd85cc
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ikrylov
parents:
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diff
changeset
|
2465 // from src/solaris/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2466 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
2467 size_t os::lasterror(char *buf, size_t len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
2468 |
828eafbd85cc
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ikrylov
parents:
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diff
changeset
|
2469 if (errno == 0) return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2470 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2471 const char *s = ::strerror(errno); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2472 size_t n = ::strlen(s); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2473 if (n >= len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2474 n = len - 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2475 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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parents:
1972
diff
changeset
|
2476 ::strncpy(buf, s, n); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2477 buf[n] = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2478 return n; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2479 } |
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diff
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|
2480 |
0 | 2481 |
2482 // sun.misc.Signal | |
2483 | |
2484 extern "C" { | |
2485 static void UserHandler(int sig, void *siginfo, void *context) { | |
2486 // Ctrl-C is pressed during error reporting, likely because the error | |
2487 // handler fails to abort. Let VM die immediately. | |
2488 if (sig == SIGINT && is_error_reported()) { | |
2489 os::die(); | |
2490 } | |
2491 | |
2492 os::signal_notify(sig); | |
2493 // We do not need to reinstate the signal handler each time... | |
2494 } | |
2495 } | |
2496 | |
2497 void* os::user_handler() { | |
2498 return CAST_FROM_FN_PTR(void*, UserHandler); | |
2499 } | |
2500 | |
10405 | 2501 class Semaphore : public StackObj { |
2502 public: | |
2503 Semaphore(); | |
2504 ~Semaphore(); | |
2505 void signal(); | |
2506 void wait(); | |
2507 bool trywait(); | |
2508 bool timedwait(unsigned int sec, int nsec); | |
2509 private: | |
2510 sema_t _semaphore; | |
2511 }; | |
2512 | |
2513 | |
2514 Semaphore::Semaphore() { | |
2515 sema_init(&_semaphore, 0, NULL, NULL); | |
2516 } | |
2517 | |
2518 Semaphore::~Semaphore() { | |
2519 sema_destroy(&_semaphore); | |
2520 } | |
2521 | |
2522 void Semaphore::signal() { | |
2523 sema_post(&_semaphore); | |
2524 } | |
2525 | |
2526 void Semaphore::wait() { | |
2527 sema_wait(&_semaphore); | |
2528 } | |
2529 | |
2530 bool Semaphore::trywait() { | |
2531 return sema_trywait(&_semaphore) == 0; | |
2532 } | |
2533 | |
2534 bool Semaphore::timedwait(unsigned int sec, int nsec) { | |
2535 struct timespec ts; | |
2536 unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec); | |
2537 | |
2538 while (1) { | |
2539 int result = sema_timedwait(&_semaphore, &ts); | |
2540 if (result == 0) { | |
2541 return true; | |
2542 } else if (errno == EINTR) { | |
2543 continue; | |
2544 } else if (errno == ETIME) { | |
2545 return false; | |
2546 } else { | |
2547 return false; | |
2548 } | |
2549 } | |
2550 } | |
2551 | |
0 | 2552 extern "C" { |
2553 typedef void (*sa_handler_t)(int); | |
2554 typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); | |
2555 } | |
2556 | |
2557 void* os::signal(int signal_number, void* handler) { | |
2558 struct sigaction sigAct, oldSigAct; | |
2559 sigfillset(&(sigAct.sa_mask)); | |
2560 sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND; | |
2561 sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); | |
2562 | |
2563 if (sigaction(signal_number, &sigAct, &oldSigAct)) | |
2564 // -1 means registration failed | |
2565 return (void *)-1; | |
2566 | |
2567 return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); | |
2568 } | |
2569 | |
2570 void os::signal_raise(int signal_number) { | |
2571 raise(signal_number); | |
2572 } | |
2573 | |
2574 /* | |
2575 * The following code is moved from os.cpp for making this | |
2576 * code platform specific, which it is by its very nature. | |
2577 */ | |
2578 | |
2579 // a counter for each possible signal value | |
2580 static int Sigexit = 0; | |
2581 static int Maxlibjsigsigs; | |
2582 static jint *pending_signals = NULL; | |
2583 static int *preinstalled_sigs = NULL; | |
2584 static struct sigaction *chainedsigactions = NULL; | |
2585 static sema_t sig_sem; | |
2586 typedef int (*version_getting_t)(); | |
2587 version_getting_t os::Solaris::get_libjsig_version = NULL; | |
2588 static int libjsigversion = NULL; | |
2589 | |
2590 int os::sigexitnum_pd() { | |
2591 assert(Sigexit > 0, "signal memory not yet initialized"); | |
2592 return Sigexit; | |
2593 } | |
2594 | |
2595 void os::Solaris::init_signal_mem() { | |
2596 // Initialize signal structures | |
2597 Maxsignum = SIGRTMAX; | |
2598 Sigexit = Maxsignum+1; | |
2599 assert(Maxsignum >0, "Unable to obtain max signal number"); | |
2600 | |
2601 Maxlibjsigsigs = Maxsignum; | |
2602 | |
2603 // pending_signals has one int per signal | |
2604 // The additional signal is for SIGEXIT - exit signal to signal_thread | |
6197 | 2605 pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1), mtInternal); |
0 | 2606 memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1))); |
2607 | |
2608 if (UseSignalChaining) { | |
2609 chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction) | |
6197 | 2610 * (Maxsignum + 1), mtInternal); |
0 | 2611 memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1))); |
6197 | 2612 preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal); |
0 | 2613 memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1))); |
2614 } | |
6197 | 2615 ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ), mtInternal); |
0 | 2616 memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1)); |
2617 } | |
2618 | |
2619 void os::signal_init_pd() { | |
2620 int ret; | |
2621 | |
2622 ret = ::sema_init(&sig_sem, 0, NULL, NULL); | |
2623 assert(ret == 0, "sema_init() failed"); | |
2624 } | |
2625 | |
2626 void os::signal_notify(int signal_number) { | |
2627 int ret; | |
2628 | |
2629 Atomic::inc(&pending_signals[signal_number]); | |
2630 ret = ::sema_post(&sig_sem); | |
2631 assert(ret == 0, "sema_post() failed"); | |
2632 } | |
2633 | |
2634 static int check_pending_signals(bool wait_for_signal) { | |
2635 int ret; | |
2636 while (true) { | |
2637 for (int i = 0; i < Sigexit + 1; i++) { | |
2638 jint n = pending_signals[i]; | |
2639 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
2640 return i; | |
2641 } | |
2642 } | |
2643 if (!wait_for_signal) { | |
2644 return -1; | |
2645 } | |
2646 JavaThread *thread = JavaThread::current(); | |
2647 ThreadBlockInVM tbivm(thread); | |
2648 | |
2649 bool threadIsSuspended; | |
2650 do { | |
2651 thread->set_suspend_equivalent(); | |
2652 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
2653 while((ret = ::sema_wait(&sig_sem)) == EINTR) | |
2654 ; | |
2655 assert(ret == 0, "sema_wait() failed"); | |
2656 | |
2657 // were we externally suspended while we were waiting? | |
2658 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
2659 if (threadIsSuspended) { | |
2660 // | |
2661 // The semaphore has been incremented, but while we were waiting | |
2662 // another thread suspended us. We don't want to continue running | |
2663 // while suspended because that would surprise the thread that | |
2664 // suspended us. | |
2665 // | |
2666 ret = ::sema_post(&sig_sem); | |
2667 assert(ret == 0, "sema_post() failed"); | |
2668 | |
2669 thread->java_suspend_self(); | |
2670 } | |
2671 } while (threadIsSuspended); | |
2672 } | |
2673 } | |
2674 | |
2675 int os::signal_lookup() { | |
2676 return check_pending_signals(false); | |
2677 } | |
2678 | |
2679 int os::signal_wait() { | |
2680 return check_pending_signals(true); | |
2681 } | |
2682 | |
2683 //////////////////////////////////////////////////////////////////////////////// | |
2684 // Virtual Memory | |
2685 | |
2686 static int page_size = -1; | |
2687 | |
2688 // The mmap MAP_ALIGN flag is supported on Solaris 9 and later. init_2() will | |
2689 // clear this var if support is not available. | |
2690 static bool has_map_align = true; | |
2691 | |
2692 int os::vm_page_size() { | |
2693 assert(page_size != -1, "must call os::init"); | |
2694 return page_size; | |
2695 } | |
2696 | |
2697 // Solaris allocates memory by pages. | |
2698 int os::vm_allocation_granularity() { | |
2699 assert(page_size != -1, "must call os::init"); | |
2700 return page_size; | |
2701 } | |
2702 | |
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2703 static bool recoverable_mmap_error(int err) { |
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2704 // See if the error is one we can let the caller handle. This |
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2705 // list of errno values comes from the Solaris mmap(2) man page. |
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2706 switch (err) { |
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2707 case EBADF: |
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2708 case EINVAL: |
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2709 case ENOTSUP: |
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2710 // let the caller deal with these errors |
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2711 return true; |
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2712 |
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|
2713 default: |
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2714 // Any remaining errors on this OS can cause our reserved mapping |
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2715 // to be lost. That can cause confusion where different data |
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2716 // structures think they have the same memory mapped. The worst |
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2717 // scenario is if both the VM and a library think they have the |
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2718 // same memory mapped. |
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2719 return false; |
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2720 } |
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2721 } |
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2722 |
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2723 static void warn_fail_commit_memory(char* addr, size_t bytes, bool exec, |
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2724 int err) { |
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2725 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
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2726 ", %d) failed; error='%s' (errno=%d)", addr, bytes, exec, |
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2727 strerror(err), err); |
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2728 } |
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2729 |
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|
2730 static void warn_fail_commit_memory(char* addr, size_t bytes, |
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2731 size_t alignment_hint, bool exec, |
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|
2732 int err) { |
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|
2733 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
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2734 ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, bytes, |
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|
2735 alignment_hint, exec, strerror(err), err); |
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|
2736 } |
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2737 |
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|
2738 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, bool exec) { |
656 | 2739 int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
0 | 2740 size_t size = bytes; |
3885 | 2741 char *res = Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, prot); |
2742 if (res != NULL) { | |
2743 if (UseNUMAInterleaving) { | |
2744 numa_make_global(addr, bytes); | |
2745 } | |
10969
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2746 return 0; |
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2747 } |
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|
2748 |
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|
2749 int err = errno; // save errno from mmap() call in mmap_chunk() |
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2750 |
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|
2751 if (!recoverable_mmap_error(err)) { |
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|
2752 warn_fail_commit_memory(addr, bytes, exec, err); |
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|
2753 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, "committing reserved memory."); |
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|
2754 } |
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2755 |
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|
2756 return err; |
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|
2757 } |
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|
2758 |
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|
2759 bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) { |
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|
2760 return Solaris::commit_memory_impl(addr, bytes, exec) == 0; |
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|
2761 } |
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|
2762 |
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|
2763 void os::pd_commit_memory_or_exit(char* addr, size_t bytes, bool exec, |
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|
2764 const char* mesg) { |
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|
2765 assert(mesg != NULL, "mesg must be specified"); |
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|
2766 int err = os::Solaris::commit_memory_impl(addr, bytes, exec); |
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|
2767 if (err != 0) { |
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|
2768 // the caller wants all commit errors to exit with the specified mesg: |
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|
2769 warn_fail_commit_memory(addr, bytes, exec, err); |
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|
2770 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, mesg); |
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|
2771 } |
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|
2772 } |
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|
2773 |
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|
2774 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, |
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|
2775 size_t alignment_hint, bool exec) { |
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|
2776 int err = Solaris::commit_memory_impl(addr, bytes, exec); |
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|
2777 if (err == 0) { |
11111
dec841e0c9aa
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|
2778 if (UseLargePages && (alignment_hint > (size_t)vm_page_size())) { |
0 | 2779 // If the large page size has been set and the VM |
2780 // is using large pages, use the large page size | |
2781 // if it is smaller than the alignment hint. This is | |
2782 // a case where the VM wants to use a larger alignment size | |
2783 // for its own reasons but still want to use large pages | |
2784 // (which is what matters to setting the mpss range. | |
2785 size_t page_size = 0; | |
2786 if (large_page_size() < alignment_hint) { | |
2787 assert(UseLargePages, "Expected to be here for large page use only"); | |
2788 page_size = large_page_size(); | |
2789 } else { | |
2790 // If the alignment hint is less than the large page | |
2791 // size, the VM wants a particular alignment (thus the hint) | |
2792 // for internal reasons. Try to set the mpss range using | |
2793 // the alignment_hint. | |
2794 page_size = alignment_hint; | |
2795 } | |
2796 // Since this is a hint, ignore any failures. | |
11111
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|
2797 (void)Solaris::setup_large_pages(addr, bytes, page_size); |
0 | 2798 } |
10969
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|
2799 } |
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|
2800 return err; |
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|
2801 } |
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|
2802 |
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|
2803 bool os::pd_commit_memory(char* addr, size_t bytes, size_t alignment_hint, |
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diff
changeset
|
2804 bool exec) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2805 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
|
2806 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2807 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2808 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
|
2809 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
|
2810 const char* mesg) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2811 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
|
2812 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
|
2813 if (err != 0) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2814 // 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
|
2815 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
|
2816 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
|
2817 } |
0 | 2818 } |
2819 | |
2820 // Uncommit the pages in a specified region. | |
6197 | 2821 void os::pd_free_memory(char* addr, size_t bytes, size_t alignment_hint) { |
0 | 2822 if (madvise(addr, bytes, MADV_FREE) < 0) { |
2823 debug_only(warning("MADV_FREE failed.")); | |
2824 return; | |
2825 } | |
2826 } | |
2827 | |
6197 | 2828 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
|
2829 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
|
2830 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2831 |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2832 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
|
2833 return os::uncommit_memory(addr, size); |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2834 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2835 |
0 | 2836 // Change the page size in a given range. |
6197 | 2837 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { |
0 | 2838 assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned."); |
2839 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
|
2840 if (UseLargePages) { |
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
2841 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
|
2842 } |
0 | 2843 } |
2844 | |
2845 // Tell the OS to make the range local to the first-touching LWP | |
141 | 2846 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { |
0 | 2847 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); |
2848 if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) { | |
2849 debug_only(warning("MADV_ACCESS_LWP failed.")); | |
2850 } | |
2851 } | |
2852 | |
2853 // Tell the OS that this range would be accessed from different LWPs. | |
2854 void os::numa_make_global(char *addr, size_t bytes) { | |
2855 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); | |
2856 if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) { | |
2857 debug_only(warning("MADV_ACCESS_MANY failed.")); | |
2858 } | |
2859 } | |
2860 | |
2861 // Get the number of the locality groups. | |
2862 size_t os::numa_get_groups_num() { | |
2863 size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie()); | |
2864 return n != -1 ? n : 1; | |
2865 } | |
2866 | |
2867 // Get a list of leaf locality groups. A leaf lgroup is group that | |
2868 // doesn't have any children. Typical leaf group is a CPU or a CPU/memory | |
2869 // board. An LWP is assigned to one of these groups upon creation. | |
2870 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
2871 if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) { | |
2872 ids[0] = 0; | |
2873 return 1; | |
2874 } | |
2875 int result_size = 0, top = 1, bottom = 0, cur = 0; | |
2876 for (int k = 0; k < size; k++) { | |
2877 int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur], | |
2878 (Solaris::lgrp_id_t*)&ids[top], size - top); | |
2879 if (r == -1) { | |
2880 ids[0] = 0; | |
2881 return 1; | |
2882 } | |
2883 if (!r) { | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2884 // That's a leaf node. |
0 | 2885 assert (bottom <= cur, "Sanity check"); |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2886 // Check if the node has memory |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2887 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
|
2888 NULL, 0, LGRP_RSRC_MEM) > 0) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2889 ids[bottom++] = ids[cur]; |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2890 } |
0 | 2891 } |
2892 top += r; | |
2893 cur++; | |
2894 } | |
268
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2895 if (bottom == 0) { |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2896 // 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
|
2897 // Assume UMA architecture. |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2898 ids[0] = 0; |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2899 return 1; |
d6340ab4105b
6723228: NUMA allocator: assert(lgrp_id != -1, "No lgrp_id set")
iveresov
parents:
267
diff
changeset
|
2900 } |
0 | 2901 return bottom; |
2902 } | |
2903 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
144
diff
changeset
|
2904 // Detect the topology change. Typically happens during CPU plugging-unplugging. |
0 | 2905 bool os::numa_topology_changed() { |
2906 int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie()); | |
2907 if (is_stale != -1 && is_stale) { | |
2908 Solaris::lgrp_fini(Solaris::lgrp_cookie()); | |
2909 Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER); | |
2910 assert(c != 0, "Failure to initialize LGRP API"); | |
2911 Solaris::set_lgrp_cookie(c); | |
2912 return true; | |
2913 } | |
2914 return false; | |
2915 } | |
2916 | |
2917 // Get the group id of the current LWP. | |
2918 int os::numa_get_group_id() { | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2919 int lgrp_id = Solaris::lgrp_home(P_LWPID, P_MYID); |
0 | 2920 if (lgrp_id == -1) { |
2921 return 0; | |
2922 } | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2923 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
|
2924 int *ids = (int*)alloca(size * sizeof(int)); |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2925 |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2926 // 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
|
2927 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
|
2928 (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
|
2929 if (r <= 0) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2930 return 0; |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2931 } |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2932 return ids[os::random() % r]; |
0 | 2933 } |
2934 | |
2935 // Request information about the page. | |
2936 bool os::get_page_info(char *start, page_info* info) { | |
2937 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
2938 uint64_t addr = (uintptr_t)start; | |
2939 uint64_t outdata[2]; | |
2940 uint_t validity = 0; | |
2941 | |
2942 if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) { | |
2943 return false; | |
2944 } | |
2945 | |
2946 info->size = 0; | |
2947 info->lgrp_id = -1; | |
2948 | |
2949 if ((validity & 1) != 0) { | |
2950 if ((validity & 2) != 0) { | |
2951 info->lgrp_id = outdata[0]; | |
2952 } | |
2953 if ((validity & 4) != 0) { | |
2954 info->size = outdata[1]; | |
2955 } | |
2956 return true; | |
2957 } | |
2958 return false; | |
2959 } | |
2960 | |
2961 // Scan the pages from start to end until a page different than | |
2962 // the one described in the info parameter is encountered. | |
2963 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
2964 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
2965 const size_t types = sizeof(info_types) / sizeof(info_types[0]); | |
2966 uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT]; | |
2967 uint_t validity[MAX_MEMINFO_CNT]; | |
2968 | |
2969 size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size); | |
2970 uint64_t p = (uint64_t)start; | |
2971 while (p < (uint64_t)end) { | |
2972 addrs[0] = p; | |
2973 size_t addrs_count = 1; | |
8739
ca9580859cf4
8004697: SIGSEGV on Solaris sparc with -XX:+UseNUMA
stefank
parents:
8067
diff
changeset
|
2974 while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] + page_size < (uint64_t)end) { |
0 | 2975 addrs[addrs_count] = addrs[addrs_count - 1] + page_size; |
2976 addrs_count++; | |
2977 } | |
2978 | |
2979 if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) { | |
2980 return NULL; | |
2981 } | |
2982 | |
2983 size_t i = 0; | |
2984 for (; i < addrs_count; i++) { | |
2985 if ((validity[i] & 1) != 0) { | |
2986 if ((validity[i] & 4) != 0) { | |
2987 if (outdata[types * i + 1] != page_expected->size) { | |
2988 break; | |
2989 } | |
2990 } else | |
2991 if (page_expected->size != 0) { | |
2992 break; | |
2993 } | |
2994 | |
2995 if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) { | |
2996 if (outdata[types * i] != page_expected->lgrp_id) { | |
2997 break; | |
2998 } | |
2999 } | |
3000 } else { | |
3001 return NULL; | |
3002 } | |
3003 } | |
3004 | |
3005 if (i != addrs_count) { | |
3006 if ((validity[i] & 2) != 0) { | |
3007 page_found->lgrp_id = outdata[types * i]; | |
3008 } else { | |
3009 page_found->lgrp_id = -1; | |
3010 } | |
3011 if ((validity[i] & 4) != 0) { | |
3012 page_found->size = outdata[types * i + 1]; | |
3013 } else { | |
3014 page_found->size = 0; | |
3015 } | |
3016 return (char*)addrs[i]; | |
3017 } | |
3018 | |
3019 p = addrs[addrs_count - 1] + page_size; | |
3020 } | |
3021 return end; | |
3022 } | |
3023 | |
6197 | 3024 bool os::pd_uncommit_memory(char* addr, size_t bytes) { |
0 | 3025 size_t size = bytes; |
3026 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
3027 // uncommitted page. Otherwise, the read/write might succeed if we | |
3028 // have enough swap space to back the physical page. | |
3029 return | |
3030 NULL != Solaris::mmap_chunk(addr, size, | |
3031 MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, | |
3032 PROT_NONE); | |
3033 } | |
3034 | |
3035 char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) { | |
3036 char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0); | |
3037 | |
3038 if (b == MAP_FAILED) { | |
3039 return NULL; | |
3040 } | |
3041 return b; | |
3042 } | |
3043 | |
60
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3044 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
|
3045 char* addr = requested_addr; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3046 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
|
3047 |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3048 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
|
3049 |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3050 if (fixed) { |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3051 flags |= MAP_FIXED; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3052 } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) { |
0 | 3053 flags |= MAP_ALIGN; |
3054 addr = (char*) alignment_hint; | |
3055 } | |
3056 | |
3057 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
3058 // uncommitted page. Otherwise, the read/write might succeed if we | |
3059 // 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
|
3060 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
|
3061 } |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3062 |
6197 | 3063 char* os::pd_reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) { |
60
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents:
0
diff
changeset
|
3064 char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL)); |
0 | 3065 |
3066 guarantee(requested_addr == NULL || requested_addr == addr, | |
3067 "OS failed to return requested mmap address."); | |
3068 return addr; | |
3069 } | |
3070 | |
3071 // Reserve memory at an arbitrary address, only if that area is | |
3072 // available (and not reserved for something else). | |
3073 | |
6197 | 3074 char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
0 | 3075 const int max_tries = 10; |
3076 char* base[max_tries]; | |
3077 size_t size[max_tries]; | |
3078 | |
3079 // Solaris adds a gap between mmap'ed regions. The size of the gap | |
3080 // is dependent on the requested size and the MMU. Our initial gap | |
3081 // value here is just a guess and will be corrected later. | |
3082 bool had_top_overlap = false; | |
3083 bool have_adjusted_gap = false; | |
3084 size_t gap = 0x400000; | |
3085 | |
3086 // Assert only that the size is a multiple of the page size, since | |
3087 // that's all that mmap requires, and since that's all we really know | |
3088 // about at this low abstraction level. If we need higher alignment, | |
3089 // we can either pass an alignment to this method or verify alignment | |
3090 // in one of the methods further up the call chain. See bug 5044738. | |
3091 assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); | |
3092 | |
60
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3093 // Since snv_84, Solaris attempts to honor the address hint - see 5003415. |
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3094 // Give it a try, if the kernel honors the hint we can return immediately. |
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3095 char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false); |
6882
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3096 |
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3097 volatile int err = errno; |
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3098 if (addr == requested_addr) { |
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3099 return addr; |
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3100 } else if (addr != NULL) { |
6882
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3101 pd_unmap_memory(addr, bytes); |
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3102 } |
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3103 |
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3104 if (PrintMiscellaneous && Verbose) { |
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3105 char buf[256]; |
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3106 buf[0] = '\0'; |
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3107 if (addr == NULL) { |
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3108 jio_snprintf(buf, sizeof(buf), ": %s", strerror(err)); |
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3109 } |
2080 | 3110 warning("attempt_reserve_memory_at: couldn't reserve " SIZE_FORMAT " bytes at " |
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3111 PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT |
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3112 "%s", bytes, requested_addr, addr, buf); |
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3113 } |
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3114 |
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3115 // Address hint method didn't work. Fall back to the old method. |
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3116 // In theory, once SNV becomes our oldest supported platform, this |
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3117 // code will no longer be needed. |
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3118 // |
0 | 3119 // Repeatedly allocate blocks until the block is allocated at the |
3120 // right spot. Give up after max_tries. | |
3121 int i; | |
3122 for (i = 0; i < max_tries; ++i) { | |
3123 base[i] = reserve_memory(bytes); | |
3124 | |
3125 if (base[i] != NULL) { | |
3126 // Is this the block we wanted? | |
3127 if (base[i] == requested_addr) { | |
3128 size[i] = bytes; | |
3129 break; | |
3130 } | |
3131 | |
3132 // check that the gap value is right | |
3133 if (had_top_overlap && !have_adjusted_gap) { | |
3134 size_t actual_gap = base[i-1] - base[i] - bytes; | |
3135 if (gap != actual_gap) { | |
3136 // adjust the gap value and retry the last 2 allocations | |
3137 assert(i > 0, "gap adjustment code problem"); | |
3138 have_adjusted_gap = true; // adjust the gap only once, just in case | |
3139 gap = actual_gap; | |
3140 if (PrintMiscellaneous && Verbose) { | |
3141 warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap); | |
3142 } | |
3143 unmap_memory(base[i], bytes); | |
3144 unmap_memory(base[i-1], size[i-1]); | |
3145 i-=2; | |
3146 continue; | |
3147 } | |
3148 } | |
3149 | |
3150 // Does this overlap the block we wanted? Give back the overlapped | |
3151 // parts and try again. | |
3152 // | |
3153 // There is still a bug in this code: if top_overlap == bytes, | |
3154 // the overlap is offset from requested region by the value of gap. | |
3155 // In this case giving back the overlapped part will not work, | |
3156 // because we'll give back the entire block at base[i] and | |
3157 // therefore the subsequent allocation will not generate a new gap. | |
3158 // This could be fixed with a new algorithm that used larger | |
3159 // or variable size chunks to find the requested region - | |
3160 // but such a change would introduce additional complications. | |
3161 // It's rare enough that the planets align for this bug, | |
3162 // so we'll just wait for a fix for 6204603/5003415 which | |
3163 // will provide a mmap flag to allow us to avoid this business. | |
3164 | |
3165 size_t top_overlap = requested_addr + (bytes + gap) - base[i]; | |
3166 if (top_overlap >= 0 && top_overlap < bytes) { | |
3167 had_top_overlap = true; | |
3168 unmap_memory(base[i], top_overlap); | |
3169 base[i] += top_overlap; | |
3170 size[i] = bytes - top_overlap; | |
3171 } else { | |
3172 size_t bottom_overlap = base[i] + bytes - requested_addr; | |
3173 if (bottom_overlap >= 0 && bottom_overlap < bytes) { | |
3174 if (PrintMiscellaneous && Verbose && bottom_overlap == 0) { | |
3175 warning("attempt_reserve_memory_at: possible alignment bug"); | |
3176 } | |
3177 unmap_memory(requested_addr, bottom_overlap); | |
3178 size[i] = bytes - bottom_overlap; | |
3179 } else { | |
3180 size[i] = bytes; | |
3181 } | |
3182 } | |
3183 } | |
3184 } | |
3185 | |
3186 // Give back the unused reserved pieces. | |
3187 | |
3188 for (int j = 0; j < i; ++j) { | |
3189 if (base[j] != NULL) { | |
3190 unmap_memory(base[j], size[j]); | |
3191 } | |
3192 } | |
3193 | |
3194 return (i < max_tries) ? requested_addr : NULL; | |
3195 } | |
3196 | |
6197 | 3197 bool os::pd_release_memory(char* addr, size_t bytes) { |
0 | 3198 size_t size = bytes; |
3199 return munmap(addr, size) == 0; | |
3200 } | |
3201 | |
3202 static bool solaris_mprotect(char* addr, size_t bytes, int prot) { | |
3203 assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()), | |
3204 "addr must be page aligned"); | |
3205 int retVal = mprotect(addr, bytes, prot); | |
3206 return retVal == 0; | |
3207 } | |
3208 | |
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3209 // Protect memory (Used to pass readonly pages through |
0 | 3210 // JNI GetArray<type>Elements with empty arrays.) |
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3211 // Also, used for serialization page and for compressed oops null pointer |
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3212 // checking. |
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3213 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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3214 bool is_committed) { |
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3215 unsigned int p = 0; |
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3216 switch (prot) { |
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3217 case MEM_PROT_NONE: p = PROT_NONE; break; |
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3218 case MEM_PROT_READ: p = PROT_READ; break; |
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3219 case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
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3220 case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; |
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3221 default: |
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3222 ShouldNotReachHere(); |
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3223 } |
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3224 // is_committed is unused. |
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3225 return solaris_mprotect(addr, bytes, p); |
0 | 3226 } |
3227 | |
3228 // guard_memory and unguard_memory only happens within stack guard pages. | |
3229 // Since ISM pertains only to the heap, guard and unguard memory should not | |
3230 /// happen with an ISM region. | |
3231 bool os::guard_memory(char* addr, size_t bytes) { | |
3232 return solaris_mprotect(addr, bytes, PROT_NONE); | |
3233 } | |
3234 | |
3235 bool os::unguard_memory(char* addr, size_t bytes) { | |
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3236 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE); |
0 | 3237 } |
3238 | |
3239 // Large page support | |
3240 static size_t _large_page_size = 0; | |
3241 | |
3242 // Insertion sort for small arrays (descending order). | |
3243 static void insertion_sort_descending(size_t* array, int len) { | |
3244 for (int i = 0; i < len; i++) { | |
3245 size_t val = array[i]; | |
3246 for (size_t key = i; key > 0 && array[key - 1] < val; --key) { | |
3247 size_t tmp = array[key]; | |
3248 array[key] = array[key - 1]; | |
3249 array[key - 1] = tmp; | |
3250 } | |
3251 } | |
3252 } | |
3253 | |
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3254 bool os::Solaris::mpss_sanity_check(bool warn, size_t* page_size) { |
0 | 3255 const unsigned int usable_count = VM_Version::page_size_count(); |
3256 if (usable_count == 1) { | |
3257 return false; | |
3258 } | |
3259 | |
3859 | 3260 // Find the right getpagesizes interface. When solaris 11 is the minimum |
3261 // build platform, getpagesizes() (without the '2') can be called directly. | |
3262 typedef int (*gps_t)(size_t[], int); | |
3263 gps_t gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes2")); | |
3264 if (gps_func == NULL) { | |
3265 gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes")); | |
3266 if (gps_func == NULL) { | |
3267 if (warn) { | |
3268 warning("MPSS is not supported by the operating system."); | |
3269 } | |
3270 return false; | |
3271 } | |
3272 } | |
3273 | |
0 | 3274 // Fill the array of page sizes. |
3859 | 3275 int n = (*gps_func)(_page_sizes, page_sizes_max); |
0 | 3276 assert(n > 0, "Solaris bug?"); |
3859 | 3277 |
0 | 3278 if (n == page_sizes_max) { |
3279 // Add a sentinel value (necessary only if the array was completely filled | |
3280 // since it is static (zeroed at initialization)). | |
3281 _page_sizes[--n] = 0; | |
3282 DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");) | |
3283 } | |
3284 assert(_page_sizes[n] == 0, "missing sentinel"); | |
3859 | 3285 trace_page_sizes("available page sizes", _page_sizes, n); |
0 | 3286 |
3287 if (n == 1) return false; // Only one page size available. | |
3288 | |
3289 // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and | |
3290 // select up to usable_count elements. First sort the array, find the first | |
3291 // acceptable value, then copy the usable sizes to the top of the array and | |
3292 // trim the rest. Make sure to include the default page size :-). | |
3293 // | |
3294 // A better policy could get rid of the 4M limit by taking the sizes of the | |
3295 // important VM memory regions (java heap and possibly the code cache) into | |
3296 // account. | |
3297 insertion_sort_descending(_page_sizes, n); | |
3298 const size_t size_limit = | |
3299 FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes; | |
3300 int beg; | |
3301 for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ; | |
3302 const int end = MIN2((int)usable_count, n) - 1; | |
3303 for (int cur = 0; cur < end; ++cur, ++beg) { | |
3304 _page_sizes[cur] = _page_sizes[beg]; | |
3305 } | |
3306 _page_sizes[end] = vm_page_size(); | |
3307 _page_sizes[end + 1] = 0; | |
3308 | |
3309 if (_page_sizes[end] > _page_sizes[end - 1]) { | |
3310 // Default page size is not the smallest; sort again. | |
3311 insertion_sort_descending(_page_sizes, end + 1); | |
3312 } | |
3313 *page_size = _page_sizes[0]; | |
3314 | |
3859 | 3315 trace_page_sizes("usable page sizes", _page_sizes, end + 1); |
0 | 3316 return true; |
3317 } | |
3318 | |
3318
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3319 void os::large_page_init() { |
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3320 if (UseLargePages) { |
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3321 // print a warning if any large page related flag is specified on command line |
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3322 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || |
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3323 !FLAG_IS_DEFAULT(LargePageSizeInBytes); |
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3324 |
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3325 UseLargePages = Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size); |
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3326 } |
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3327 } |
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3328 |
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3329 bool os::Solaris::setup_large_pages(caddr_t start, size_t bytes, size_t align) { |
0 | 3330 // Signal to OS that we want large pages for addresses |
3331 // from addr, addr + bytes | |
3332 struct memcntl_mha mpss_struct; | |
3333 mpss_struct.mha_cmd = MHA_MAPSIZE_VA; | |
3334 mpss_struct.mha_pagesize = align; | |
3335 mpss_struct.mha_flags = 0; | |
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3336 // Upon successful completion, memcntl() returns 0 |
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3337 if (memcntl(start, bytes, MC_HAT_ADVISE, (caddr_t) &mpss_struct, 0, 0)) { |
0 | 3338 debug_only(warning("Attempt to use MPSS failed.")); |
3339 return false; | |
3340 } | |
3341 return true; | |
3342 } | |
3343 | |
3885 | 3344 char* os::reserve_memory_special(size_t size, char* addr, bool exec) { |
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3345 fatal("os::reserve_memory_special should not be called on Solaris."); |
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3346 return NULL; |
0 | 3347 } |
3348 | |
3349 bool os::release_memory_special(char* base, size_t bytes) { | |
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3350 fatal("os::release_memory_special should not be called on Solaris."); |
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3351 return false; |
0 | 3352 } |
3353 | |
3354 size_t os::large_page_size() { | |
3355 return _large_page_size; | |
3356 } | |
3357 | |
3358 // MPSS allows application to commit large page memory on demand; with ISM | |
3359 // the entire memory region must be allocated as shared memory. | |
3360 bool os::can_commit_large_page_memory() { | |
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3361 return true; |
0 | 3362 } |
3363 | |
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3364 bool os::can_execute_large_page_memory() { |
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3365 return true; |
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3366 } |
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3367 |
0 | 3368 static int os_sleep(jlong millis, bool interruptible) { |
3369 const jlong limit = INT_MAX; | |
3370 jlong prevtime; | |
3371 int res; | |
3372 | |
3373 while (millis > limit) { | |
3374 if ((res = os_sleep(limit, interruptible)) != OS_OK) | |
3375 return res; | |
3376 millis -= limit; | |
3377 } | |
3378 | |
3379 // Restart interrupted polls with new parameters until the proper delay | |
3380 // has been completed. | |
3381 | |
3382 prevtime = getTimeMillis(); | |
3383 | |
3384 while (millis > 0) { | |
3385 jlong newtime; | |
3386 | |
3387 if (!interruptible) { | |
3388 // Following assert fails for os::yield_all: | |
3389 // assert(!thread->is_Java_thread(), "must not be java thread"); | |
3390 res = poll(NULL, 0, millis); | |
3391 } else { | |
3392 JavaThread *jt = JavaThread::current(); | |
3393 | |
3394 INTERRUPTIBLE_NORESTART_VM_ALWAYS(poll(NULL, 0, millis), res, jt, | |
3395 os::Solaris::clear_interrupted); | |
3396 } | |
3397 | |
3398 // INTERRUPTIBLE_NORESTART_VM_ALWAYS returns res == OS_INTRPT for | |
3399 // thread.Interrupt. | |
3400 | |
1967 | 3401 // See c/r 6751923. Poll can return 0 before time |
3402 // has elapsed if time is set via clock_settime (as NTP does). | |
3403 // res == 0 if poll timed out (see man poll RETURN VALUES) | |
3404 // using the logic below checks that we really did | |
3405 // sleep at least "millis" if not we'll sleep again. | |
3406 if( ( res == 0 ) || ((res == OS_ERR) && (errno == EINTR))) { | |
0 | 3407 newtime = getTimeMillis(); |
3408 assert(newtime >= prevtime, "time moving backwards"); | |
3409 /* Doing prevtime and newtime in microseconds doesn't help precision, | |
3410 and trying to round up to avoid lost milliseconds can result in a | |
3411 too-short delay. */ | |
3412 millis -= newtime - prevtime; | |
3413 if(millis <= 0) | |
3414 return OS_OK; | |
3415 prevtime = newtime; | |
3416 } else | |
3417 return res; | |
3418 } | |
3419 | |
3420 return OS_OK; | |
3421 } | |
3422 | |
3423 // Read calls from inside the vm need to perform state transitions | |
3424 size_t os::read(int fd, void *buf, unsigned int nBytes) { | |
3425 INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); | |
3426 } | |
3427 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3428 size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3429 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
|
3430 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
3431 |
0 | 3432 int os::sleep(Thread* thread, jlong millis, bool interruptible) { |
3433 assert(thread == Thread::current(), "thread consistency check"); | |
3434 | |
3435 // TODO-FIXME: this should be removed. | |
3436 // On Solaris machines (especially 2.5.1) we found that sometimes the VM gets into a live lock | |
3437 // situation with a JavaThread being starved out of a lwp. The kernel doesn't seem to generate | |
3438 // a SIGWAITING signal which would enable the threads library to create a new lwp for the starving | |
3439 // thread. We suspect that because the Watcher thread keeps waking up at periodic intervals the kernel | |
3440 // is fooled into believing that the system is making progress. In the code below we block the | |
3441 // the watcher thread while safepoint is in progress so that it would not appear as though the | |
3442 // system is making progress. | |
3443 if (!Solaris::T2_libthread() && | |
3444 thread->is_Watcher_thread() && SafepointSynchronize::is_synchronizing() && !Arguments::has_profile()) { | |
3445 // We now try to acquire the threads lock. Since this lock is held by the VM thread during | |
3446 // the entire safepoint, the watcher thread will line up here during the safepoint. | |
3447 Threads_lock->lock_without_safepoint_check(); | |
3448 Threads_lock->unlock(); | |
3449 } | |
3450 | |
3451 if (thread->is_Java_thread()) { | |
3452 // This is a JavaThread so we honor the _thread_blocked protocol | |
3453 // even for sleeps of 0 milliseconds. This was originally done | |
3454 // as a workaround for bug 4338139. However, now we also do it | |
3455 // to honor the suspend-equivalent protocol. | |
3456 | |
3457 JavaThread *jt = (JavaThread *) thread; | |
3458 ThreadBlockInVM tbivm(jt); | |
3459 | |
3460 jt->set_suspend_equivalent(); | |
3461 // cleared by handle_special_suspend_equivalent_condition() or | |
3462 // java_suspend_self() via check_and_wait_while_suspended() | |
3463 | |
3464 int ret_code; | |
3465 if (millis <= 0) { | |
3466 thr_yield(); | |
3467 ret_code = 0; | |
3468 } else { | |
3469 // The original sleep() implementation did not create an | |
3470 // OSThreadWaitState helper for sleeps of 0 milliseconds. | |
3471 // I'm preserving that decision for now. | |
3472 OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */); | |
3473 | |
3474 ret_code = os_sleep(millis, interruptible); | |
3475 } | |
3476 | |
3477 // were we externally suspended while we were waiting? | |
3478 jt->check_and_wait_while_suspended(); | |
3479 | |
3480 return ret_code; | |
3481 } | |
3482 | |
3483 // non-JavaThread from this point on: | |
3484 | |
3485 if (millis <= 0) { | |
3486 thr_yield(); | |
3487 return 0; | |
3488 } | |
3489 | |
3490 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
3491 | |
3492 return os_sleep(millis, interruptible); | |
3493 } | |
3494 | |
3495 int os::naked_sleep() { | |
3496 // %% make the sleep time an integer flag. for now use 1 millisec. | |
3497 return os_sleep(1, false); | |
3498 } | |
3499 | |
3500 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
3501 void os::infinite_sleep() { | |
3502 while (true) { // sleep forever ... | |
3503 ::sleep(100); // ... 100 seconds at a time | |
3504 } | |
3505 } | |
3506 | |
3507 // Used to convert frequent JVM_Yield() to nops | |
3508 bool os::dont_yield() { | |
3509 if (DontYieldALot) { | |
3510 static hrtime_t last_time = 0; | |
3511 hrtime_t diff = getTimeNanos() - last_time; | |
3512 | |
3513 if (diff < DontYieldALotInterval * 1000000) | |
3514 return true; | |
3515 | |
3516 last_time += diff; | |
3517 | |
3518 return false; | |
3519 } | |
3520 else { | |
3521 return false; | |
3522 } | |
3523 } | |
3524 | |
3525 // Caveat: Solaris os::yield() causes a thread-state transition whereas | |
3526 // the linux and win32 implementations do not. This should be checked. | |
3527 | |
3528 void os::yield() { | |
3529 // Yields to all threads with same or greater priority | |
3530 os::sleep(Thread::current(), 0, false); | |
3531 } | |
3532 | |
3533 // Note that yield semantics are defined by the scheduling class to which | |
3534 // the thread currently belongs. Typically, yield will _not yield to | |
3535 // other equal or higher priority threads that reside on the dispatch queues | |
3536 // of other CPUs. | |
3537 | |
3538 os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; } | |
3539 | |
3540 | |
3541 // On Solaris we found that yield_all doesn't always yield to all other threads. | |
3542 // There have been cases where there is a thread ready to execute but it doesn't | |
3543 // get an lwp as the VM thread continues to spin with sleeps of 1 millisecond. | |
3544 // The 1 millisecond wait doesn't seem long enough for the kernel to issue a | |
3545 // SIGWAITING signal which will cause a new lwp to be created. So we count the | |
3546 // number of times yield_all is called in the one loop and increase the sleep | |
3547 // time after 8 attempts. If this fails too we increase the concurrency level | |
3548 // so that the starving thread would get an lwp | |
3549 | |
3550 void os::yield_all(int attempts) { | |
3551 // Yields to all threads, including threads with lower priorities | |
3552 if (attempts == 0) { | |
3553 os::sleep(Thread::current(), 1, false); | |
3554 } else { | |
3555 int iterations = attempts % 30; | |
3556 if (iterations == 0 && !os::Solaris::T2_libthread()) { | |
3557 // thr_setconcurrency and _getconcurrency make sense only under T1. | |
3558 int noofLWPS = thr_getconcurrency(); | |
3559 if (noofLWPS < (Threads::number_of_threads() + 2)) { | |
3560 thr_setconcurrency(thr_getconcurrency() + 1); | |
3561 } | |
3562 } else if (iterations < 25) { | |
3563 os::sleep(Thread::current(), 1, false); | |
3564 } else { | |
3565 os::sleep(Thread::current(), 10, false); | |
3566 } | |
3567 } | |
3568 } | |
3569 | |
3570 // Called from the tight loops to possibly influence time-sharing heuristics | |
3571 void os::loop_breaker(int attempts) { | |
3572 os::yield_all(attempts); | |
3573 } | |
3574 | |
3575 | |
3576 // Interface for setting lwp priorities. If we are using T2 libthread, | |
3577 // which forces the use of BoundThreads or we manually set UseBoundThreads, | |
3578 // all of our threads will be assigned to real lwp's. Using the thr_setprio | |
3579 // function is meaningless in this mode so we must adjust the real lwp's priority | |
3580 // The routines below implement the getting and setting of lwp priorities. | |
3581 // | |
3582 // Note: There are three priority scales used on Solaris. Java priotities | |
3583 // which range from 1 to 10, libthread "thr_setprio" scale which range | |
3584 // from 0 to 127, and the current scheduling class of the process we | |
3585 // are running in. This is typically from -60 to +60. | |
3586 // The setting of the lwp priorities in done after a call to thr_setprio | |
3587 // so Java priorities are mapped to libthread priorities and we map from | |
3588 // the latter to lwp priorities. We don't keep priorities stored in | |
3589 // Java priorities since some of our worker threads want to set priorities | |
3590 // higher than all Java threads. | |
3591 // | |
3592 // For related information: | |
3593 // (1) man -s 2 priocntl | |
3594 // (2) man -s 4 priocntl | |
3595 // (3) man dispadmin | |
3596 // = librt.so | |
3597 // = libthread/common/rtsched.c - thrp_setlwpprio(). | |
3598 // = ps -cL <pid> ... to validate priority. | |
3599 // = sched_get_priority_min and _max | |
3600 // pthread_create | |
3601 // sched_setparam | |
3602 // pthread_setschedparam | |
3603 // | |
3604 // Assumptions: | |
3605 // + We assume that all threads in the process belong to the same | |
3606 // scheduling class. IE. an homogenous process. | |
3607 // + Must be root or in IA group to change change "interactive" attribute. | |
3608 // Priocntl() will fail silently. The only indication of failure is when | |
3609 // we read-back the value and notice that it hasn't changed. | |
3610 // + Interactive threads enter the runq at the head, non-interactive at the tail. | |
3611 // + For RT, change timeslice as well. Invariant: | |
3612 // constant "priority integral" | |
3613 // Konst == TimeSlice * (60-Priority) | |
3614 // Given a priority, compute appropriate timeslice. | |
3615 // + Higher numerical values have higher priority. | |
3616 | |
3617 // sched class attributes | |
3618 typedef struct { | |
3619 int schedPolicy; // classID | |
3620 int maxPrio; | |
3621 int minPrio; | |
3622 } SchedInfo; | |
3623 | |
3624 | |
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diff
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|
3625 static SchedInfo tsLimits, iaLimits, rtLimits, fxLimits; |
0 | 3626 |
3627 #ifdef ASSERT | |
3628 static int ReadBackValidate = 1; | |
3629 #endif | |
3630 static int myClass = 0; | |
3631 static int myMin = 0; | |
3632 static int myMax = 0; | |
3633 static int myCur = 0; | |
3634 static bool priocntl_enable = false; | |
3635 | |
4854
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diff
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|
3636 static const int criticalPrio = 60; // FX/60 is critical thread class/priority on T4 |
de268c8a8075
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diff
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|
3637 static int java_MaxPriority_to_os_priority = 0; // Saved mapping |
0 | 3638 |
3639 | |
3640 // lwp_priocntl_init | |
3641 // | |
3642 // Try to determine the priority scale for our process. | |
3643 // | |
3644 // Return errno or 0 if OK. | |
3645 // | |
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diff
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|
3646 static int lwp_priocntl_init () { |
0 | 3647 int rslt; |
3648 pcinfo_t ClassInfo; | |
3649 pcparms_t ParmInfo; | |
3650 int i; | |
3651 | |
3652 if (!UseThreadPriorities) return 0; | |
3653 | |
3654 // We are using Bound threads, we need to determine our priority ranges | |
3655 if (os::Solaris::T2_libthread() || UseBoundThreads) { | |
3656 // If ThreadPriorityPolicy is 1, switch tables | |
3657 if (ThreadPriorityPolicy == 1) { | |
4854
de268c8a8075
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phh
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4803
diff
changeset
|
3658 for (i = 0 ; i < CriticalPriority+1; i++) |
0 | 3659 os::java_to_os_priority[i] = prio_policy1[i]; |
3660 } | |
4854
de268c8a8075
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phh
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4803
diff
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|
3661 if (UseCriticalJavaThreadPriority) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3662 // MaxPriority always maps to the FX scheduling class and criticalPrio. |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3663 // See set_native_priority() and set_lwp_class_and_priority(). |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3664 // Save original MaxPriority mapping in case attempt to |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
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|
3665 // use critical priority fails. |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
3666 java_MaxPriority_to_os_priority = os::java_to_os_priority[MaxPriority]; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3667 // Set negative to distinguish from other priorities |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3668 os::java_to_os_priority[MaxPriority] = -criticalPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3669 } |
0 | 3670 } |
3671 // Not using Bound Threads, set to ThreadPolicy 1 | |
3672 else { | |
4854
de268c8a8075
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phh
parents:
4803
diff
changeset
|
3673 for ( i = 0 ; i < CriticalPriority+1; i++ ) { |
0 | 3674 os::java_to_os_priority[i] = prio_policy1[i]; |
3675 } | |
3676 return 0; | |
3677 } | |
3678 | |
3679 // Get IDs for a set of well-known scheduling classes. | |
3680 // TODO-FIXME: GETCLINFO returns the current # of classes in the | |
3681 // the system. We should have a loop that iterates over the | |
3682 // classID values, which are known to be "small" integers. | |
3683 | |
3684 strcpy(ClassInfo.pc_clname, "TS"); | |
3685 ClassInfo.pc_cid = -1; | |
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10986
diff
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|
3686 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3687 if (rslt < 0) return errno; |
3688 assert(ClassInfo.pc_cid != -1, "cid for TS class is -1"); | |
3689 tsLimits.schedPolicy = ClassInfo.pc_cid; | |
3690 tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri; | |
3691 tsLimits.minPrio = -tsLimits.maxPrio; | |
3692 | |
3693 strcpy(ClassInfo.pc_clname, "IA"); | |
3694 ClassInfo.pc_cid = -1; | |
11111
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10986
diff
changeset
|
3695 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3696 if (rslt < 0) return errno; |
3697 assert(ClassInfo.pc_cid != -1, "cid for IA class is -1"); | |
3698 iaLimits.schedPolicy = ClassInfo.pc_cid; | |
3699 iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri; | |
3700 iaLimits.minPrio = -iaLimits.maxPrio; | |
3701 | |
3702 strcpy(ClassInfo.pc_clname, "RT"); | |
3703 ClassInfo.pc_cid = -1; | |
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diff
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|
3704 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
0 | 3705 if (rslt < 0) return errno; |
3706 assert(ClassInfo.pc_cid != -1, "cid for RT class is -1"); | |
3707 rtLimits.schedPolicy = ClassInfo.pc_cid; | |
3708 rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri; | |
3709 rtLimits.minPrio = 0; | |
3710 | |
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de268c8a8075
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4803
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|
3711 strcpy(ClassInfo.pc_clname, "FX"); |
de268c8a8075
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phh
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diff
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|
3712 ClassInfo.pc_cid = -1; |
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anoll
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10986
diff
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|
3713 rslt = priocntl(P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
4854
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4803
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|
3714 if (rslt < 0) return errno; |
de268c8a8075
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4803
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|
3715 assert(ClassInfo.pc_cid != -1, "cid for FX class is -1"); |
de268c8a8075
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4803
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|
3716 fxLimits.schedPolicy = ClassInfo.pc_cid; |
de268c8a8075
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phh
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4803
diff
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|
3717 fxLimits.maxPrio = ((fxinfo_t*)ClassInfo.pc_clinfo)->fx_maxupri; |
de268c8a8075
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4803
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|
3718 fxLimits.minPrio = 0; |
0 | 3719 |
3720 // Query our "current" scheduling class. | |
4854
de268c8a8075
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4803
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|
3721 // This will normally be IA, TS or, rarely, FX or RT. |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
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|
3722 memset(&ParmInfo, 0, sizeof(ParmInfo)); |
0 | 3723 ParmInfo.pc_cid = PC_CLNULL; |
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|
3724 rslt = priocntl(P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
4854
de268c8a8075
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4803
diff
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|
3725 if (rslt < 0) return errno; |
0 | 3726 myClass = ParmInfo.pc_cid; |
3727 | |
3728 // We now know our scheduling classId, get specific information | |
4854
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phh
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diff
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|
3729 // about the class. |
0 | 3730 ClassInfo.pc_cid = myClass; |
3731 ClassInfo.pc_clname[0] = 0; | |
11111
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diff
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|
3732 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
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|
3733 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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|
3734 |
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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|
3735 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3736 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
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4803
diff
changeset
|
3737 } |
0 | 3738 |
3739 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
3740 ParmInfo.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
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diff
changeset
|
3741 rslt = priocntl(P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
0 | 3742 if (rslt < 0) return errno; |
3743 | |
3744 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
3745 myMin = rtLimits.minPrio; | |
3746 myMax = rtLimits.maxPrio; | |
3747 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
3748 iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms; | |
3749 myMin = iaLimits.minPrio; | |
3750 myMax = iaLimits.maxPrio; | |
3751 myMax = MIN2(myMax, (int)iaInfo->ia_uprilim); // clamp - restrict | |
3752 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
3753 tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms; | |
3754 myMin = tsLimits.minPrio; | |
3755 myMax = tsLimits.maxPrio; | |
3756 myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3757 } 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
|
3758 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
|
3759 myMin = fxLimits.minPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3760 myMax = fxLimits.maxPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3761 myMax = MIN2(myMax, (int)fxInfo->fx_uprilim); // clamp - restrict |
0 | 3762 } else { |
3763 // No clue - punt | |
3764 if (ThreadPriorityVerbose) | |
3765 tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname); | |
3766 return EINVAL; // no clue, punt | |
3767 } | |
3768 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3769 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3770 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
|
3771 } |
0 | 3772 |
3773 priocntl_enable = true; // Enable changing priorities | |
3774 return 0; | |
3775 } | |
3776 | |
3777 #define IAPRI(x) ((iaparms_t *)((x).pc_clparms)) | |
3778 #define RTPRI(x) ((rtparms_t *)((x).pc_clparms)) | |
3779 #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
|
3780 #define FXPRI(x) ((fxparms_t *)((x).pc_clparms)) |
0 | 3781 |
3782 | |
3783 // scale_to_lwp_priority | |
3784 // | |
3785 // Convert from the libthread "thr_setprio" scale to our current | |
3786 // lwp scheduling class scale. | |
3787 // | |
3788 static | |
3789 int scale_to_lwp_priority (int rMin, int rMax, int x) | |
3790 { | |
3791 int v; | |
3792 | |
3793 if (x == 127) return rMax; // avoid round-down | |
3794 v = (((x*(rMax-rMin)))/128)+rMin; | |
3795 return v; | |
3796 } | |
3797 | |
3798 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3799 // set_lwp_class_and_priority |
0 | 3800 // |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3801 // 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
|
3802 // be made when using bound threads (T2 threads are bound by default). |
0 | 3803 // |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3804 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
|
3805 int newPrio, int new_class, bool scale) { |
0 | 3806 int rslt; |
3807 int Actual, Expected, prv; | |
3808 pcparms_t ParmInfo; // for GET-SET | |
3809 #ifdef ASSERT | |
3810 pcparms_t ReadBack; // for readback | |
3811 #endif | |
3812 | |
3813 // Set priority via PC_GETPARMS, update, PC_SETPARMS | |
3814 // Query current values. | |
3815 // TODO: accelerate this by eliminating the PC_GETPARMS call. | |
3816 // Cache "pcparms_t" in global ParmCache. | |
3817 // TODO: elide set-to-same-value | |
3818 | |
3819 // If something went wrong on init, don't change priorities. | |
3820 if ( !priocntl_enable ) { | |
3821 if (ThreadPriorityVerbose) | |
3822 tty->print_cr("Trying to set priority but init failed, ignoring"); | |
3823 return EINVAL; | |
3824 } | |
3825 | |
3826 // If lwp hasn't started yet, just return | |
3827 // the _start routine will call us again. | |
3828 if ( lwpid <= 0 ) { | |
3829 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3830 tty->print_cr ("deferring the set_lwp_class_and_priority of thread " |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3831 INTPTR_FORMAT " to %d, lwpid not set", |
0 | 3832 ThreadID, newPrio); |
3833 } | |
3834 return 0; | |
3835 } | |
3836 | |
3837 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3838 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:
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diff
changeset
|
3839 INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ", |
0 | 3840 ThreadID, lwpid, newPrio); |
3841 } | |
3842 | |
3843 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
3844 ParmInfo.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3845 rslt = priocntl(P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo); |
0 | 3846 if (rslt < 0) return errno; |
3847 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3848 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
|
3849 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
|
3850 |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3851 if (new_class == rtLimits.schedPolicy) { |
0 | 3852 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
|
3853 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
|
3854 rtLimits.maxPrio, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3855 : newPrio; |
0 | 3856 rtInfo->rt_tqsecs = RT_NOCHANGE; |
3857 rtInfo->rt_tqnsecs = RT_NOCHANGE; | |
3858 if (ThreadPriorityVerbose) { | |
3859 tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri); | |
3860 } | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3861 } 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
|
3862 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
|
3863 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
|
3864 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
|
3865 ? (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
|
3866 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
|
3867 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3868 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3869 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
|
3870 ? IA_NOCHANGE : (pri_t)iaLimits.maxPrio; |
0 | 3871 iaInfo->ia_mode = IA_NOCHANGE; |
3872 if (ThreadPriorityVerbose) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3873 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
|
3874 iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri); |
0 | 3875 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3876 } 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
|
3877 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
|
3878 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
|
3879 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
|
3880 ? (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
|
3881 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
|
3882 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3883 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3884 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
|
3885 ? TS_NOCHANGE : (pri_t)tsLimits.maxPrio; |
0 | 3886 if (ThreadPriorityVerbose) { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3887 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
|
3888 tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri); |
0 | 3889 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3890 } 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
|
3891 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
|
3892 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
|
3893 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
|
3894 ? (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
|
3895 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
|
3896 maxClamped, newPrio) |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3897 : newPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3898 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
|
3899 ? 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
|
3900 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
|
3901 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
|
3902 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3903 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
|
3904 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
|
3905 } |
0 | 3906 } else { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3907 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3908 tty->print_cr("Unknown new scheduling class %d\n", new_class); |
0 | 3909 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4803
diff
changeset
|
3910 return EINVAL; // no clue, punt |
0 | 3911 } |
3912 | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3913 rslt = priocntl(P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo); |
0 | 3914 if (ThreadPriorityVerbose && rslt) { |
3915 tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno); | |
3916 } | |
3917 if (rslt < 0) return errno; | |
3918 | |
3919 #ifdef ASSERT | |
3920 // Sanity check: read back what we just attempted to set. | |
3921 // In theory it could have changed in the interim ... | |
3922 // | |
3923 // The priocntl system call is tricky. | |
3924 // Sometimes it'll validate the priority value argument and | |
3925 // return EINVAL if unhappy. At other times it fails silently. | |
3926 // Readbacks are prudent. | |
3927 | |
3928 if (!ReadBackValidate) return 0; | |
3929 | |
3930 memset(&ReadBack, 0, sizeof(pcparms_t)); | |
3931 ReadBack.pc_cid = PC_CLNULL; | |
11111
dec841e0c9aa
8016749: -XX:+UseISM fails an assert(obj->is_oop()) when running SPECjbb2005
anoll
parents:
10986
diff
changeset
|
3932 rslt = priocntl(P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack); |
0 | 3933 assert(rslt >= 0, "priocntl failed"); |
3934 Actual = Expected = 0xBAD; | |
3935 assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match"); | |
3936 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
3937 Actual = RTPRI(ReadBack)->rt_pri; | |
3938 Expected = RTPRI(ParmInfo)->rt_pri; | |
3939 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
3940 Actual = IAPRI(ReadBack)->ia_upri; | |
3941 Expected = IAPRI(ParmInfo)->ia_upri; | |
3942 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
3943 Actual = TSPRI(ReadBack)->ts_upri; | |
3944 Expected = TSPRI(ParmInfo)->ts_upri; | |
4854
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|
3945 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
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|
3946 Actual = FXPRI(ReadBack)->fx_upri; |
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|
3947 Expected = FXPRI(ParmInfo)->fx_upri; |
0 | 3948 } else { |
4854
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|
3949 if (ThreadPriorityVerbose) { |
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|
3950 tty->print_cr("set_lwp_class_and_priority: unexpected class in readback: %d\n", |
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|
3951 ParmInfo.pc_cid); |
0 | 3952 } |
3953 } | |
3954 | |
3955 if (Actual != Expected) { | |
4854
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|
3956 if (ThreadPriorityVerbose) { |
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|
3957 tty->print_cr ("set_lwp_class_and_priority(%d %d) Class=%d: actual=%d vs expected=%d\n", |
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|
3958 lwpid, newPrio, ReadBack.pc_cid, Actual, Expected); |
0 | 3959 } |
3960 } | |
3961 #endif | |
3962 | |
3963 return 0; | |
3964 } | |
3965 | |
3966 // Solaris only gives access to 128 real priorities at a time, | |
3967 // so we expand Java's ten to fill this range. This would be better | |
3968 // if we dynamically adjusted relative priorities. | |
3969 // | |
3970 // The ThreadPriorityPolicy option allows us to select 2 different | |
3971 // priority scales. | |
3972 // | |
3973 // ThreadPriorityPolicy=0 | |
3974 // Since the Solaris' default priority is MaximumPriority, we do not | |
3975 // set a priority lower than Max unless a priority lower than | |
3976 // NormPriority is requested. | |
3977 // | |
3978 // ThreadPriorityPolicy=1 | |
3979 // This mode causes the priority table to get filled with | |
3980 // linear values. NormPriority get's mapped to 50% of the | |
3981 // Maximum priority an so on. This will cause VM threads | |
3982 // to get unfair treatment against other Solaris processes | |
3983 // which do not explicitly alter their thread priorities. | |
3984 // | |
3985 | |
4854
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|
3986 int os::java_to_os_priority[CriticalPriority + 1] = { |
0 | 3987 -99999, // 0 Entry should never be used |
3988 | |
3989 0, // 1 MinPriority | |
3990 32, // 2 | |
3991 64, // 3 | |
3992 | |
3993 96, // 4 | |
3994 127, // 5 NormPriority | |
3995 127, // 6 | |
3996 | |
3997 127, // 7 | |
3998 127, // 8 | |
3999 127, // 9 NearMaxPriority | |
4000 | |
4854
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|
4001 127, // 10 MaxPriority |
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4002 |
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|
4003 -criticalPrio // 11 CriticalPriority |
0 | 4004 }; |
4005 | |
4006 OSReturn os::set_native_priority(Thread* thread, int newpri) { | |
4854
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|
4007 OSThread* osthread = thread->osthread(); |
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4008 |
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4009 // Save requested priority in case the thread hasn't been started |
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|
4010 osthread->set_native_priority(newpri); |
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|
4011 |
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4012 // Check for critical priority request |
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|
4013 bool fxcritical = false; |
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|
4014 if (newpri == -criticalPrio) { |
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|
4015 fxcritical = true; |
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|
4016 newpri = criticalPrio; |
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|
4017 } |
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|
4018 |
0 | 4019 assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping"); |
4854
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|
4020 if (!UseThreadPriorities) return OS_OK; |
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|
4021 |
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|
4022 int status = 0; |
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|
4023 |
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|
4024 if (!fxcritical) { |
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|
4025 // Use thr_setprio only if we have a priority that thr_setprio understands |
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|
4026 status = thr_setprio(thread->osthread()->thread_id(), newpri); |
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|
4027 } |
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|
4028 |
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|
4029 if (os::Solaris::T2_libthread() || |
de268c8a8075
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|
4030 (UseBoundThreads && osthread->is_vm_created())) { |
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|
4031 int lwp_status = |
de268c8a8075
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|
4032 set_lwp_class_and_priority(osthread->thread_id(), |
de268c8a8075
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|
4033 osthread->lwp_id(), |
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|
4034 newpri, |
de268c8a8075
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|
4035 fxcritical ? fxLimits.schedPolicy : myClass, |
de268c8a8075
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|
4036 !fxcritical); |
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|
4037 if (lwp_status != 0 && fxcritical) { |
de268c8a8075
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|
4038 // Try again, this time without changing the scheduling class |
de268c8a8075
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phh
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changeset
|
4039 newpri = java_MaxPriority_to_os_priority; |
de268c8a8075
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phh
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|
4040 lwp_status = set_lwp_class_and_priority(osthread->thread_id(), |
de268c8a8075
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|
4041 osthread->lwp_id(), |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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|
4042 newpri, myClass, false); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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|
4043 } |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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|
4044 status |= lwp_status; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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|
4045 } |
0 | 4046 return (status == 0) ? OS_OK : OS_ERR; |
4047 } | |
4048 | |
4049 | |
4050 OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) { | |
4051 int p; | |
4052 if ( !UseThreadPriorities ) { | |
4053 *priority_ptr = NormalPriority; | |
4054 return OS_OK; | |
4055 } | |
4056 int status = thr_getprio(thread->osthread()->thread_id(), &p); | |
4057 if (status != 0) { | |
4058 return OS_ERR; | |
4059 } | |
4060 *priority_ptr = p; | |
4061 return OS_OK; | |
4062 } | |
4063 | |
4064 | |
4065 // Hint to the underlying OS that a task switch would not be good. | |
4066 // Void return because it's a hint and can fail. | |
4067 void os::hint_no_preempt() { | |
4068 schedctl_start(schedctl_init()); | |
4069 } | |
4070 | |
10405 | 4071 static void resume_clear_context(OSThread *osthread) { |
4072 osthread->set_ucontext(NULL); | |
4073 } | |
4074 | |
4075 static void suspend_save_context(OSThread *osthread, ucontext_t* context) { | |
4076 osthread->set_ucontext(context); | |
4077 } | |
4078 | |
4079 static Semaphore sr_semaphore; | |
4080 | |
4081 void os::Solaris::SR_handler(Thread* thread, ucontext_t* uc) { | |
4082 // Save and restore errno to avoid confusing native code with EINTR | |
4083 // after sigsuspend. | |
4084 int old_errno = errno; | |
4085 | |
4086 OSThread* osthread = thread->osthread(); | |
4087 assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread"); | |
4088 | |
4089 os::SuspendResume::State current = osthread->sr.state(); | |
4090 if (current == os::SuspendResume::SR_SUSPEND_REQUEST) { | |
4091 suspend_save_context(osthread, uc); | |
4092 | |
4093 // attempt to switch the state, we assume we had a SUSPEND_REQUEST | |
4094 os::SuspendResume::State state = osthread->sr.suspended(); | |
4095 if (state == os::SuspendResume::SR_SUSPENDED) { | |
4096 sigset_t suspend_set; // signals for sigsuspend() | |
4097 | |
4098 // get current set of blocked signals and unblock resume signal | |
4099 thr_sigsetmask(SIG_BLOCK, NULL, &suspend_set); | |
4100 sigdelset(&suspend_set, os::Solaris::SIGasync()); | |
4101 | |
4102 sr_semaphore.signal(); | |
4103 // wait here until we are resumed | |
4104 while (1) { | |
4105 sigsuspend(&suspend_set); | |
4106 | |
4107 os::SuspendResume::State result = osthread->sr.running(); | |
4108 if (result == os::SuspendResume::SR_RUNNING) { | |
4109 sr_semaphore.signal(); | |
4110 break; | |
4111 } | |
4112 } | |
4113 | |
4114 } else if (state == os::SuspendResume::SR_RUNNING) { | |
4115 // request was cancelled, continue | |
4116 } else { | |
4117 ShouldNotReachHere(); | |
4118 } | |
4119 | |
4120 resume_clear_context(osthread); | |
4121 } else if (current == os::SuspendResume::SR_RUNNING) { | |
4122 // request was cancelled, continue | |
4123 } else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4124 // ignore | |
4125 } else { | |
4126 // ignore | |
4127 } | |
4128 | |
4129 errno = old_errno; | |
4130 } | |
4131 | |
4132 | |
0 | 4133 void os::interrupt(Thread* thread) { |
4134 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
4135 | |
4136 OSThread* osthread = thread->osthread(); | |
4137 | |
4138 int isInterrupted = osthread->interrupted(); | |
4139 if (!isInterrupted) { | |
4140 osthread->set_interrupted(true); | |
4141 OrderAccess::fence(); | |
4142 // os::sleep() is implemented with either poll (NULL,0,timeout) or | |
4143 // by parking on _SleepEvent. If the former, thr_kill will unwedge | |
4144 // the sleeper by SIGINTR, otherwise the unpark() will wake the sleeper. | |
4145 ParkEvent * const slp = thread->_SleepEvent ; | |
4146 if (slp != NULL) slp->unpark() ; | |
4147 } | |
4148 | |
4149 // For JSR166: unpark after setting status but before thr_kill -dl | |
4150 if (thread->is_Java_thread()) { | |
4151 ((JavaThread*)thread)->parker()->unpark(); | |
4152 } | |
4153 | |
4154 // Handle interruptible wait() ... | |
4155 ParkEvent * const ev = thread->_ParkEvent ; | |
4156 if (ev != NULL) ev->unpark() ; | |
4157 | |
4158 // When events are used everywhere for os::sleep, then this thr_kill | |
4159 // will only be needed if UseVMInterruptibleIO is true. | |
4160 | |
4161 if (!isInterrupted) { | |
4162 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGinterrupt()); | |
4163 assert_status(status == 0, status, "thr_kill"); | |
4164 | |
4165 // Bump thread interruption counter | |
4166 RuntimeService::record_thread_interrupt_signaled_count(); | |
4167 } | |
4168 } | |
4169 | |
4170 | |
4171 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
4172 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
4173 | |
4174 OSThread* osthread = thread->osthread(); | |
4175 | |
4176 bool res = osthread->interrupted(); | |
4177 | |
4178 // NOTE that since there is no "lock" around these two operations, | |
4179 // there is the possibility that the interrupted flag will be | |
4180 // "false" but that the interrupt event will be set. This is | |
4181 // intentional. The effect of this is that Object.wait() will appear | |
4182 // to have a spurious wakeup, which is not harmful, and the | |
4183 // possibility is so rare that it is not worth the added complexity | |
4184 // to add yet another lock. It has also been recommended not to put | |
4185 // the interrupted flag into the os::Solaris::Event structure, | |
4186 // because it hides the issue. | |
4187 if (res && clear_interrupted) { | |
4188 osthread->set_interrupted(false); | |
4189 } | |
4190 return res; | |
4191 } | |
4192 | |
4193 | |
4194 void os::print_statistics() { | |
4195 } | |
4196 | |
4197 int os::message_box(const char* title, const char* message) { | |
4198 int i; | |
4199 fdStream err(defaultStream::error_fd()); | |
4200 for (i = 0; i < 78; i++) err.print_raw("="); | |
4201 err.cr(); | |
4202 err.print_raw_cr(title); | |
4203 for (i = 0; i < 78; i++) err.print_raw("-"); | |
4204 err.cr(); | |
4205 err.print_raw_cr(message); | |
4206 for (i = 0; i < 78; i++) err.print_raw("="); | |
4207 err.cr(); | |
4208 | |
4209 char buf[16]; | |
4210 // Prevent process from exiting upon "read error" without consuming all CPU | |
4211 while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } | |
4212 | |
4213 return buf[0] == 'y' || buf[0] == 'Y'; | |
4214 } | |
4215 | |
10405 | 4216 static int sr_notify(OSThread* osthread) { |
4217 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGasync()); | |
4218 assert_status(status == 0, status, "thr_kill"); | |
4219 return status; | |
4220 } | |
4221 | |
4222 // "Randomly" selected value for how long we want to spin | |
4223 // before bailing out on suspending a thread, also how often | |
4224 // we send a signal to a thread we want to resume | |
4225 static const int RANDOMLY_LARGE_INTEGER = 1000000; | |
4226 static const int RANDOMLY_LARGE_INTEGER2 = 100; | |
4227 | |
4228 static bool do_suspend(OSThread* osthread) { | |
4229 assert(osthread->sr.is_running(), "thread should be running"); | |
4230 assert(!sr_semaphore.trywait(), "semaphore has invalid state"); | |
4231 | |
4232 // mark as suspended and send signal | |
4233 if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) { | |
4234 // failed to switch, state wasn't running? | |
4235 ShouldNotReachHere(); | |
4236 return false; | |
4237 } | |
4238 | |
4239 if (sr_notify(osthread) != 0) { | |
4240 ShouldNotReachHere(); | |
4241 } | |
4242 | |
4243 // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED | |
4244 while (true) { | |
4245 if (sr_semaphore.timedwait(0, 2000 * NANOSECS_PER_MILLISEC)) { | |
4246 break; | |
4247 } else { | |
4248 // timeout | |
4249 os::SuspendResume::State cancelled = osthread->sr.cancel_suspend(); | |
4250 if (cancelled == os::SuspendResume::SR_RUNNING) { | |
4251 return false; | |
4252 } else if (cancelled == os::SuspendResume::SR_SUSPENDED) { | |
4253 // make sure that we consume the signal on the semaphore as well | |
4254 sr_semaphore.wait(); | |
4255 break; | |
4256 } else { | |
4257 ShouldNotReachHere(); | |
4258 return false; | |
4259 } | |
4260 } | |
4261 } | |
4262 | |
4263 guarantee(osthread->sr.is_suspended(), "Must be suspended"); | |
4264 return true; | |
4265 } | |
4266 | |
4267 static void do_resume(OSThread* osthread) { | |
4268 assert(osthread->sr.is_suspended(), "thread should be suspended"); | |
4269 assert(!sr_semaphore.trywait(), "invalid semaphore state"); | |
4270 | |
4271 if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4272 // failed to switch to WAKEUP_REQUEST | |
4273 ShouldNotReachHere(); | |
4274 return; | |
4275 } | |
4276 | |
4277 while (true) { | |
4278 if (sr_notify(osthread) == 0) { | |
4279 if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { | |
4280 if (osthread->sr.is_running()) { | |
4281 return; | |
4282 } | |
4283 } | |
4284 } else { | |
4285 ShouldNotReachHere(); | |
4286 } | |
4287 } | |
4288 | |
4289 guarantee(osthread->sr.is_running(), "Must be running!"); | |
4290 } | |
4291 | |
4292 void os::SuspendedThreadTask::internal_do_task() { | |
4293 if (do_suspend(_thread->osthread())) { | |
4294 SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext()); | |
4295 do_task(context); | |
4296 do_resume(_thread->osthread()); | |
4297 } | |
4298 } | |
4299 | |
4300 class PcFetcher : public os::SuspendedThreadTask { | |
4301 public: | |
4302 PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {} | |
4303 ExtendedPC result(); | |
4304 protected: | |
4305 void do_task(const os::SuspendedThreadTaskContext& context); | |
4306 private: | |
4307 ExtendedPC _epc; | |
4308 }; | |
4309 | |
4310 ExtendedPC PcFetcher::result() { | |
4311 guarantee(is_done(), "task is not done yet."); | |
4312 return _epc; | |
4313 } | |
4314 | |
4315 void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) { | |
4316 Thread* thread = context.thread(); | |
4317 OSThread* osthread = thread->osthread(); | |
4318 if (osthread->ucontext() != NULL) { | |
4319 _epc = os::Solaris::ucontext_get_pc((ucontext_t *) context.ucontext()); | |
4320 } else { | |
4321 // NULL context is unexpected, double-check this is the VMThread | |
4322 guarantee(thread->is_VM_thread(), "can only be called for VMThread"); | |
4323 } | |
4324 } | |
4325 | |
0 | 4326 // A lightweight implementation that does not suspend the target thread and |
4327 // thus returns only a hint. Used for profiling only! | |
4328 ExtendedPC os::get_thread_pc(Thread* thread) { | |
4329 // Make sure that it is called by the watcher and the Threads lock is owned. | |
4330 assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock"); | |
4331 // For now, is only used to profile the VM Thread | |
4332 assert(thread->is_VM_thread(), "Can only be called for VMThread"); | |
10405 | 4333 PcFetcher fetcher(thread); |
4334 fetcher.run(); | |
4335 return fetcher.result(); | |
0 | 4336 } |
4337 | |
4338 | |
4339 // This does not do anything on Solaris. This is basically a hook for being | |
4340 // able to use structured exception handling (thread-local exception filters) on, e.g., Win32. | |
4341 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) { | |
4342 f(value, method, args, thread); | |
4343 } | |
4344 | |
4345 // This routine may be used by user applications as a "hook" to catch signals. | |
4346 // The user-defined signal handler must pass unrecognized signals to this | |
4347 // routine, and if it returns true (non-zero), then the signal handler must | |
4348 // return immediately. If the flag "abort_if_unrecognized" is true, then this | |
4349 // routine will never retun false (zero), but instead will execute a VM panic | |
4350 // routine kill the process. | |
4351 // | |
4352 // If this routine returns false, it is OK to call it again. This allows | |
4353 // the user-defined signal handler to perform checks either before or after | |
4354 // the VM performs its own checks. Naturally, the user code would be making | |
4355 // a serious error if it tried to handle an exception (such as a null check | |
4356 // or breakpoint) that the VM was generating for its own correct operation. | |
4357 // | |
4358 // This routine may recognize any of the following kinds of signals: | |
4359 // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ, | |
4360 // os::Solaris::SIGasync | |
4361 // It should be consulted by handlers for any of those signals. | |
4362 // It explicitly does not recognize os::Solaris::SIGinterrupt | |
4363 // | |
4364 // The caller of this routine must pass in the three arguments supplied | |
4365 // to the function referred to in the "sa_sigaction" (not the "sa_handler") | |
4366 // field of the structure passed to sigaction(). This routine assumes that | |
4367 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. | |
4368 // | |
4369 // Note that the VM will print warnings if it detects conflicting signal | |
4370 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". | |
4371 // | |
2191 | 4372 extern "C" JNIEXPORT int |
4373 JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, | |
4374 int abort_if_unrecognized); | |
0 | 4375 |
4376 | |
4377 void signalHandler(int sig, siginfo_t* info, void* ucVoid) { | |
8067 | 4378 int orig_errno = errno; // Preserve errno value over signal handler. |
0 | 4379 JVM_handle_solaris_signal(sig, info, ucVoid, true); |
8067 | 4380 errno = orig_errno; |
0 | 4381 } |
4382 | |
4383 /* Do not delete - if guarantee is ever removed, a signal handler (even empty) | |
4384 is needed to provoke threads blocked on IO to return an EINTR | |
4385 Note: this explicitly does NOT call JVM_handle_solaris_signal and | |
4386 does NOT participate in signal chaining due to requirement for | |
4387 NOT setting SA_RESTART to make EINTR work. */ | |
4388 extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) { | |
4389 if (UseSignalChaining) { | |
4390 struct sigaction *actp = os::Solaris::get_chained_signal_action(sig); | |
4391 if (actp && actp->sa_handler) { | |
4392 vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs"); | |
4393 } | |
4394 } | |
4395 } | |
4396 | |
4397 // This boolean allows users to forward their own non-matching signals | |
4398 // to JVM_handle_solaris_signal, harmlessly. | |
4399 bool os::Solaris::signal_handlers_are_installed = false; | |
4400 | |
4401 // For signal-chaining | |
4402 bool os::Solaris::libjsig_is_loaded = false; | |
4403 typedef struct sigaction *(*get_signal_t)(int); | |
4404 get_signal_t os::Solaris::get_signal_action = NULL; | |
4405 | |
4406 struct sigaction* os::Solaris::get_chained_signal_action(int sig) { | |
4407 struct sigaction *actp = NULL; | |
4408 | |
4409 if ((libjsig_is_loaded) && (sig <= Maxlibjsigsigs)) { | |
4410 // Retrieve the old signal handler from libjsig | |
4411 actp = (*get_signal_action)(sig); | |
4412 } | |
4413 if (actp == NULL) { | |
4414 // Retrieve the preinstalled signal handler from jvm | |
4415 actp = get_preinstalled_handler(sig); | |
4416 } | |
4417 | |
4418 return actp; | |
4419 } | |
4420 | |
4421 static bool call_chained_handler(struct sigaction *actp, int sig, | |
4422 siginfo_t *siginfo, void *context) { | |
4423 // Call the old signal handler | |
4424 if (actp->sa_handler == SIG_DFL) { | |
4425 // It's more reasonable to let jvm treat it as an unexpected exception | |
4426 // instead of taking the default action. | |
4427 return false; | |
4428 } else if (actp->sa_handler != SIG_IGN) { | |
4429 if ((actp->sa_flags & SA_NODEFER) == 0) { | |
4430 // automaticlly block the signal | |
4431 sigaddset(&(actp->sa_mask), sig); | |
4432 } | |
4433 | |
4434 sa_handler_t hand; | |
4435 sa_sigaction_t sa; | |
4436 bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; | |
4437 // retrieve the chained handler | |
4438 if (siginfo_flag_set) { | |
4439 sa = actp->sa_sigaction; | |
4440 } else { | |
4441 hand = actp->sa_handler; | |
4442 } | |
4443 | |
4444 if ((actp->sa_flags & SA_RESETHAND) != 0) { | |
4445 actp->sa_handler = SIG_DFL; | |
4446 } | |
4447 | |
4448 // try to honor the signal mask | |
4449 sigset_t oset; | |
4450 thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset); | |
4451 | |
4452 // call into the chained handler | |
4453 if (siginfo_flag_set) { | |
4454 (*sa)(sig, siginfo, context); | |
4455 } else { | |
4456 (*hand)(sig); | |
4457 } | |
4458 | |
4459 // restore the signal mask | |
4460 thr_sigsetmask(SIG_SETMASK, &oset, 0); | |
4461 } | |
4462 // Tell jvm's signal handler the signal is taken care of. | |
4463 return true; | |
4464 } | |
4465 | |
4466 bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) { | |
4467 bool chained = false; | |
4468 // signal-chaining | |
4469 if (UseSignalChaining) { | |
4470 struct sigaction *actp = get_chained_signal_action(sig); | |
4471 if (actp != NULL) { | |
4472 chained = call_chained_handler(actp, sig, siginfo, context); | |
4473 } | |
4474 } | |
4475 return chained; | |
4476 } | |
4477 | |
4478 struct sigaction* os::Solaris::get_preinstalled_handler(int sig) { | |
4479 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4480 if (preinstalled_sigs[sig] != 0) { | |
4481 return &chainedsigactions[sig]; | |
4482 } | |
4483 return NULL; | |
4484 } | |
4485 | |
4486 void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) { | |
4487 | |
4488 assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range"); | |
4489 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4490 chainedsigactions[sig] = oldAct; | |
4491 preinstalled_sigs[sig] = 1; | |
4492 } | |
4493 | |
4494 void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) { | |
4495 // Check for overwrite. | |
4496 struct sigaction oldAct; | |
4497 sigaction(sig, (struct sigaction*)NULL, &oldAct); | |
4498 void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4499 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4500 if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && | |
4501 oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && | |
4502 oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) { | |
4503 if (AllowUserSignalHandlers || !set_installed) { | |
4504 // Do not overwrite; user takes responsibility to forward to us. | |
4505 return; | |
4506 } else if (UseSignalChaining) { | |
4507 if (oktochain) { | |
4508 // save the old handler in jvm | |
4509 save_preinstalled_handler(sig, oldAct); | |
4510 } else { | |
4511 vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs."); | |
4512 } | |
4513 // libjsig also interposes the sigaction() call below and saves the | |
4514 // old sigaction on it own. | |
4515 } else { | |
1490
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4516 fatal(err_msg("Encountered unexpected pre-existing sigaction handler " |
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|
4517 "%#lx for signal %d.", (long)oldhand, sig)); |
0 | 4518 } |
4519 } | |
4520 | |
4521 struct sigaction sigAct; | |
4522 sigfillset(&(sigAct.sa_mask)); | |
4523 sigAct.sa_handler = SIG_DFL; | |
4524 | |
4525 sigAct.sa_sigaction = signalHandler; | |
4526 // Handle SIGSEGV on alternate signal stack if | |
4527 // not using stack banging | |
4528 if (!UseStackBanging && sig == SIGSEGV) { | |
4529 sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK; | |
4530 // Interruptible i/o requires SA_RESTART cleared so EINTR | |
4531 // is returned instead of restarting system calls | |
4532 } else if (sig == os::Solaris::SIGinterrupt()) { | |
4533 sigemptyset(&sigAct.sa_mask); | |
4534 sigAct.sa_handler = NULL; | |
4535 sigAct.sa_flags = SA_SIGINFO; | |
4536 sigAct.sa_sigaction = sigINTRHandler; | |
4537 } else { | |
4538 sigAct.sa_flags = SA_SIGINFO | SA_RESTART; | |
4539 } | |
4540 os::Solaris::set_our_sigflags(sig, sigAct.sa_flags); | |
4541 | |
4542 sigaction(sig, &sigAct, &oldAct); | |
4543 | |
4544 void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4545 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4546 assert(oldhand2 == oldhand, "no concurrent signal handler installation"); | |
4547 } | |
4548 | |
4549 | |
4550 #define DO_SIGNAL_CHECK(sig) \ | |
4551 if (!sigismember(&check_signal_done, sig)) \ | |
4552 os::Solaris::check_signal_handler(sig) | |
4553 | |
4554 // This method is a periodic task to check for misbehaving JNI applications | |
4555 // under CheckJNI, we can add any periodic checks here | |
4556 | |
4557 void os::run_periodic_checks() { | |
4558 // A big source of grief is hijacking virt. addr 0x0 on Solaris, | |
4559 // thereby preventing a NULL checks. | |
4560 if(!check_addr0_done) check_addr0_done = check_addr0(tty); | |
4561 | |
4562 if (check_signals == false) return; | |
4563 | |
4564 // SEGV and BUS if overridden could potentially prevent | |
4565 // generation of hs*.log in the event of a crash, debugging | |
4566 // such a case can be very challenging, so we absolutely | |
4567 // check for the following for a good measure: | |
4568 DO_SIGNAL_CHECK(SIGSEGV); | |
4569 DO_SIGNAL_CHECK(SIGILL); | |
4570 DO_SIGNAL_CHECK(SIGFPE); | |
4571 DO_SIGNAL_CHECK(SIGBUS); | |
4572 DO_SIGNAL_CHECK(SIGPIPE); | |
4573 DO_SIGNAL_CHECK(SIGXFSZ); | |
4574 | |
4575 // ReduceSignalUsage allows the user to override these handlers | |
4576 // see comments at the very top and jvm_solaris.h | |
4577 if (!ReduceSignalUsage) { | |
4578 DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); | |
4579 DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); | |
4580 DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); | |
4581 DO_SIGNAL_CHECK(BREAK_SIGNAL); | |
4582 } | |
4583 | |
4584 // See comments above for using JVM1/JVM2 and UseAltSigs | |
4585 DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt()); | |
4586 DO_SIGNAL_CHECK(os::Solaris::SIGasync()); | |
4587 | |
4588 } | |
4589 | |
4590 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); | |
4591 | |
4592 static os_sigaction_t os_sigaction = NULL; | |
4593 | |
4594 void os::Solaris::check_signal_handler(int sig) { | |
4595 char buf[O_BUFLEN]; | |
4596 address jvmHandler = NULL; | |
4597 | |
4598 struct sigaction act; | |
4599 if (os_sigaction == NULL) { | |
4600 // only trust the default sigaction, in case it has been interposed | |
4601 os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); | |
4602 if (os_sigaction == NULL) return; | |
4603 } | |
4604 | |
4605 os_sigaction(sig, (struct sigaction*)NULL, &act); | |
4606 | |
4607 address thisHandler = (act.sa_flags & SA_SIGINFO) | |
4608 ? CAST_FROM_FN_PTR(address, act.sa_sigaction) | |
4609 : CAST_FROM_FN_PTR(address, act.sa_handler) ; | |
4610 | |
4611 | |
4612 switch(sig) { | |
4613 case SIGSEGV: | |
4614 case SIGBUS: | |
4615 case SIGFPE: | |
4616 case SIGPIPE: | |
4617 case SIGXFSZ: | |
4618 case SIGILL: | |
4619 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4620 break; | |
4621 | |
4622 case SHUTDOWN1_SIGNAL: | |
4623 case SHUTDOWN2_SIGNAL: | |
4624 case SHUTDOWN3_SIGNAL: | |
4625 case BREAK_SIGNAL: | |
4626 jvmHandler = (address)user_handler(); | |
4627 break; | |
4628 | |
4629 default: | |
4630 int intrsig = os::Solaris::SIGinterrupt(); | |
4631 int asynsig = os::Solaris::SIGasync(); | |
4632 | |
4633 if (sig == intrsig) { | |
4634 jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler); | |
4635 } else if (sig == asynsig) { | |
4636 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4637 } else { | |
4638 return; | |
4639 } | |
4640 break; | |
4641 } | |
4642 | |
4643 | |
4644 if (thisHandler != jvmHandler) { | |
4645 tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); | |
4646 tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); | |
4647 tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); | |
4648 // No need to check this sig any longer | |
4649 sigaddset(&check_signal_done, sig); | |
4650 } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
4651 tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); | |
4652 tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig)); | |
4653 tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags); | |
4654 // No need to check this sig any longer | |
4655 sigaddset(&check_signal_done, sig); | |
4656 } | |
4657 | |
4658 // Print all the signal handler state | |
4659 if (sigismember(&check_signal_done, sig)) { | |
4660 print_signal_handlers(tty, buf, O_BUFLEN); | |
4661 } | |
4662 | |
4663 } | |
4664 | |
4665 void os::Solaris::install_signal_handlers() { | |
4666 bool libjsigdone = false; | |
4667 signal_handlers_are_installed = true; | |
4668 | |
4669 // signal-chaining | |
4670 typedef void (*signal_setting_t)(); | |
4671 signal_setting_t begin_signal_setting = NULL; | |
4672 signal_setting_t end_signal_setting = NULL; | |
4673 begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4674 dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); | |
4675 if (begin_signal_setting != NULL) { | |
4676 end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4677 dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); | |
4678 get_signal_action = CAST_TO_FN_PTR(get_signal_t, | |
4679 dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); | |
4680 get_libjsig_version = CAST_TO_FN_PTR(version_getting_t, | |
4681 dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version")); | |
4682 libjsig_is_loaded = true; | |
4683 if (os::Solaris::get_libjsig_version != NULL) { | |
4684 libjsigversion = (*os::Solaris::get_libjsig_version)(); | |
4685 } | |
4686 assert(UseSignalChaining, "should enable signal-chaining"); | |
4687 } | |
4688 if (libjsig_is_loaded) { | |
4689 // Tell libjsig jvm is setting signal handlers | |
4690 (*begin_signal_setting)(); | |
4691 } | |
4692 | |
4693 set_signal_handler(SIGSEGV, true, true); | |
4694 set_signal_handler(SIGPIPE, true, true); | |
4695 set_signal_handler(SIGXFSZ, true, true); | |
4696 set_signal_handler(SIGBUS, true, true); | |
4697 set_signal_handler(SIGILL, true, true); | |
4698 set_signal_handler(SIGFPE, true, true); | |
4699 | |
4700 | |
4701 if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) { | |
4702 | |
4703 // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so | |
4704 // can not register overridable signals which might be > 32 | |
4705 if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) { | |
4706 // Tell libjsig jvm has finished setting signal handlers | |
4707 (*end_signal_setting)(); | |
4708 libjsigdone = true; | |
4709 } | |
4710 } | |
4711 | |
4712 // Never ok to chain our SIGinterrupt | |
4713 set_signal_handler(os::Solaris::SIGinterrupt(), true, false); | |
4714 set_signal_handler(os::Solaris::SIGasync(), true, true); | |
4715 | |
4716 if (libjsig_is_loaded && !libjsigdone) { | |
4717 // Tell libjsig jvm finishes setting signal handlers | |
4718 (*end_signal_setting)(); | |
4719 } | |
4720 | |
4721 // We don't activate signal checker if libjsig is in place, we trust ourselves | |
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4722 // and if UserSignalHandler is installed all bets are off. |
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4723 // Log that signal checking is off only if -verbose:jni is specified. |
0 | 4724 if (CheckJNICalls) { |
4725 if (libjsig_is_loaded) { | |
3956
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|
4726 if (PrintJNIResolving) { |
3607aac85aa9
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4727 tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); |
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|
4728 } |
0 | 4729 check_signals = false; |
4730 } | |
4731 if (AllowUserSignalHandlers) { | |
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|
4732 if (PrintJNIResolving) { |
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diff
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|
4733 tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); |
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|
4734 } |
0 | 4735 check_signals = false; |
4736 } | |
4737 } | |
4738 } | |
4739 | |
4740 | |
4741 void report_error(const char* file_name, int line_no, const char* title, const char* format, ...); | |
4742 | |
4743 const char * signames[] = { | |
4744 "SIG0", | |
4745 "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", | |
4746 "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", | |
4747 "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", | |
4748 "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH", | |
4749 "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT", | |
4750 "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU", | |
4751 "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW", | |
4752 "SIGCANCEL", "SIGLOST" | |
4753 }; | |
4754 | |
4755 const char* os::exception_name(int exception_code, char* buf, size_t size) { | |
4756 if (0 < exception_code && exception_code <= SIGRTMAX) { | |
4757 // signal | |
4758 if (exception_code < sizeof(signames)/sizeof(const char*)) { | |
4759 jio_snprintf(buf, size, "%s", signames[exception_code]); | |
4760 } else { | |
4761 jio_snprintf(buf, size, "SIG%d", exception_code); | |
4762 } | |
4763 return buf; | |
4764 } else { | |
4765 return NULL; | |
4766 } | |
4767 } | |
4768 | |
4769 // (Static) wrappers for the new libthread API | |
4770 int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate; | |
4771 int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate; | |
4772 int_fnP_thread_t_i os::Solaris::_thr_setmutator; | |
4773 int_fnP_thread_t os::Solaris::_thr_suspend_mutator; | |
4774 int_fnP_thread_t os::Solaris::_thr_continue_mutator; | |
4775 | |
641
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6812587: Use auxv to determine SPARC hardware features on Solaris
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548
diff
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|
4776 // (Static) wrapper for getisax(2) call. |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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548
diff
changeset
|
4777 os::Solaris::getisax_func_t os::Solaris::_getisax = 0; |
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diff
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|
4778 |
0 | 4779 // (Static) wrappers for the liblgrp API |
4780 os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home; | |
4781 os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init; | |
4782 os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini; | |
4783 os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root; | |
4784 os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children; | |
144
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6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
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diff
changeset
|
4785 os::Solaris::lgrp_resources_func_t os::Solaris::_lgrp_resources; |
0 | 4786 os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps; |
4787 os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale; | |
4788 os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0; | |
4789 | |
4790 // (Static) wrapper for meminfo() call. | |
4791 os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0; | |
4792 | |
641
6af0a709d52b
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|
4793 static address resolve_symbol_lazy(const char* name) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4794 address addr = (address) dlsym(RTLD_DEFAULT, name); |
0 | 4795 if(addr == NULL) { |
4796 // RTLD_DEFAULT was not defined on some early versions of 2.5.1 | |
4797 addr = (address) dlsym(RTLD_NEXT, name); | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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parents:
548
diff
changeset
|
4798 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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parents:
548
diff
changeset
|
4799 return addr; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4800 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4801 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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parents:
548
diff
changeset
|
4802 static address resolve_symbol(const char* name) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4803 address addr = resolve_symbol_lazy(name); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4804 if(addr == NULL) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
4805 fatal(dlerror()); |
0 | 4806 } |
4807 return addr; | |
4808 } | |
4809 | |
4810 | |
4811 | |
4812 // isT2_libthread() | |
4813 // | |
4814 // Routine to determine if we are currently using the new T2 libthread. | |
4815 // | |
4816 // We determine if we are using T2 by reading /proc/self/lstatus and | |
4817 // looking for a thread with the ASLWP bit set. If we find this status | |
4818 // bit set, we must assume that we are NOT using T2. The T2 team | |
4819 // has approved this algorithm. | |
4820 // | |
4821 // We need to determine if we are running with the new T2 libthread | |
4822 // since setting native thread priorities is handled differently | |
4823 // when using this library. All threads created using T2 are bound | |
4824 // threads. Calling thr_setprio is meaningless in this case. | |
4825 // | |
4826 bool isT2_libthread() { | |
4827 static prheader_t * lwpArray = NULL; | |
4828 static int lwpSize = 0; | |
4829 static int lwpFile = -1; | |
4830 lwpstatus_t * that; | |
4831 char lwpName [128]; | |
4832 bool isT2 = false; | |
4833 | |
4834 #define ADR(x) ((uintptr_t)(x)) | |
4835 #define LWPINDEX(ary,ix) ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1)))) | |
4836 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4837 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
|
4838 if (lwpFile < 0) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4839 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
|
4840 return false; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4841 } |
0 | 4842 lwpSize = 16*1024; |
4843 for (;;) { | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4844 ::lseek64 (lwpFile, 0, SEEK_SET); |
6197 | 4845 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
|
4846 if (::read(lwpFile, lwpArray, lwpSize) < 0) { |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4847 if (ThreadPriorityVerbose) warning("Error reading /proc/self/lstatus\n"); |
0 | 4848 break; |
4849 } | |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4850 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
|
4851 // 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
|
4852 int aslwpcount = 0; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4853 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
|
4854 that = LWPINDEX(lwpArray,i); |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4855 if (that->pr_flags & PR_ASLWP) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4856 aslwpcount++; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4857 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4858 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4859 if (aslwpcount == 0) isT2 = true; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4860 break; |
0 | 4861 } |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4862 lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize; |
6197 | 4863 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); // retry. |
4864 } | |
4865 | |
4866 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4867 ::close (lwpFile); |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4868 if (ThreadPriorityVerbose) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
4869 if (isT2) tty->print_cr("We are running with a T2 libthread\n"); |
0 | 4870 else tty->print_cr("We are not running with a T2 libthread\n"); |
4871 } | |
89
b97de546208e
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xlu
parents:
79
diff
changeset
|
4872 return isT2; |
0 | 4873 } |
4874 | |
4875 | |
4876 void os::Solaris::libthread_init() { | |
4877 address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators"); | |
4878 | |
4879 // Determine if we are running with the new T2 libthread | |
4880 os::Solaris::set_T2_libthread(isT2_libthread()); | |
4881 | |
4882 lwp_priocntl_init(); | |
4883 | |
4884 // RTLD_DEFAULT was not defined on some early versions of 5.5.1 | |
4885 if(func == NULL) { | |
4886 func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators"); | |
4887 // Guarantee that this VM is running on an new enough OS (5.6 or | |
4888 // later) that it will have a new enough libthread.so. | |
4889 guarantee(func != NULL, "libthread.so is too old."); | |
4890 } | |
4891 | |
4892 // Initialize the new libthread getstate API wrappers | |
4893 func = resolve_symbol("thr_getstate"); | |
4894 os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func)); | |
4895 | |
4896 func = resolve_symbol("thr_setstate"); | |
4897 os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func)); | |
4898 | |
4899 func = resolve_symbol("thr_setmutator"); | |
4900 os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func)); | |
4901 | |
4902 func = resolve_symbol("thr_suspend_mutator"); | |
4903 os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
4904 | |
4905 func = resolve_symbol("thr_continue_mutator"); | |
4906 os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
4907 | |
4908 int size; | |
4909 void (*handler_info_func)(address *, int *); | |
4910 handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo")); | |
4911 handler_info_func(&handler_start, &size); | |
4912 handler_end = handler_start + size; | |
4913 } | |
4914 | |
4915 | |
4916 int_fnP_mutex_tP os::Solaris::_mutex_lock; | |
4917 int_fnP_mutex_tP os::Solaris::_mutex_trylock; | |
4918 int_fnP_mutex_tP os::Solaris::_mutex_unlock; | |
4919 int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init; | |
4920 int_fnP_mutex_tP os::Solaris::_mutex_destroy; | |
4921 int os::Solaris::_mutex_scope = USYNC_THREAD; | |
4922 | |
4923 int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait; | |
4924 int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait; | |
4925 int_fnP_cond_tP os::Solaris::_cond_signal; | |
4926 int_fnP_cond_tP os::Solaris::_cond_broadcast; | |
4927 int_fnP_cond_tP_i_vP os::Solaris::_cond_init; | |
4928 int_fnP_cond_tP os::Solaris::_cond_destroy; | |
4929 int os::Solaris::_cond_scope = USYNC_THREAD; | |
4930 | |
4931 void os::Solaris::synchronization_init() { | |
4932 if(UseLWPSynchronization) { | |
4933 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock"))); | |
4934 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock"))); | |
4935 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock"))); | |
4936 os::Solaris::set_mutex_init(lwp_mutex_init); | |
4937 os::Solaris::set_mutex_destroy(lwp_mutex_destroy); | |
4938 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
4939 | |
4940 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait"))); | |
4941 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait"))); | |
4942 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal"))); | |
4943 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast"))); | |
4944 os::Solaris::set_cond_init(lwp_cond_init); | |
4945 os::Solaris::set_cond_destroy(lwp_cond_destroy); | |
4946 os::Solaris::set_cond_scope(USYNC_THREAD); | |
4947 } | |
4948 else { | |
4949 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
4950 os::Solaris::set_cond_scope(USYNC_THREAD); | |
4951 | |
4952 if(UsePthreads) { | |
4953 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock"))); | |
4954 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock"))); | |
4955 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock"))); | |
4956 os::Solaris::set_mutex_init(pthread_mutex_default_init); | |
4957 os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy"))); | |
4958 | |
4959 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait"))); | |
4960 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait"))); | |
4961 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal"))); | |
4962 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast"))); | |
4963 os::Solaris::set_cond_init(pthread_cond_default_init); | |
4964 os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy"))); | |
4965 } | |
4966 else { | |
4967 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock"))); | |
4968 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock"))); | |
4969 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock"))); | |
4970 os::Solaris::set_mutex_init(::mutex_init); | |
4971 os::Solaris::set_mutex_destroy(::mutex_destroy); | |
4972 | |
4973 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait"))); | |
4974 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait"))); | |
4975 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal"))); | |
4976 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast"))); | |
4977 os::Solaris::set_cond_init(::cond_init); | |
4978 os::Solaris::set_cond_destroy(::cond_destroy); | |
4979 } | |
4980 } | |
4981 } | |
4982 | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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439
diff
changeset
|
4983 bool os::Solaris::liblgrp_init() { |
267
9d6a3a6891f8
6720130: NUMA allocator: The linux version should search for libnuma.so.1
iveresov
parents:
144
diff
changeset
|
4984 void *handle = dlopen("liblgrp.so.1", RTLD_LAZY); |
0 | 4985 if (handle != NULL) { |
4986 os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home"))); | |
4987 os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init"))); | |
4988 os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini"))); | |
4989 os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root"))); | |
4990 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.
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141
diff
changeset
|
4991 os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources"))); |
0 | 4992 os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps"))); |
4993 os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t, | |
4994 dlsym(handle, "lgrp_cookie_stale"))); | |
4995 | |
4996 lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER); | |
4997 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
|
4998 return true; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
4999 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5000 return false; |
0 | 5001 } |
5002 | |
5003 void os::Solaris::misc_sym_init() { | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5004 address func; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5005 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5006 // getisax |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5007 func = resolve_symbol_lazy("getisax"); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5008 if (func != NULL) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
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changeset
|
5009 os::Solaris::_getisax = CAST_TO_FN_PTR(getisax_func_t, func); |
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6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
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diff
changeset
|
5010 } |
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6812587: Use auxv to determine SPARC hardware features on Solaris
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diff
changeset
|
5011 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
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diff
changeset
|
5012 // meminfo |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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diff
changeset
|
5013 func = resolve_symbol_lazy("meminfo"); |
0 | 5014 if (func != NULL) { |
5015 os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func)); | |
5016 } | |
5017 } | |
5018 | |
641
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6812587: Use auxv to determine SPARC hardware features on Solaris
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|
5019 uint_t os::Solaris::getisax(uint32_t* array, uint_t n) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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|
5020 assert(_getisax != NULL, "_getisax not set"); |
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6812587: Use auxv to determine SPARC hardware features on Solaris
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|
5021 return _getisax(array, n); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
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diff
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|
5022 } |
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|
5023 |
0 | 5024 // int pset_getloadavg(psetid_t pset, double loadavg[], int nelem); |
5025 typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem); | |
5026 static pset_getloadavg_type pset_getloadavg_ptr = NULL; | |
5027 | |
5028 void init_pset_getloadavg_ptr(void) { | |
5029 pset_getloadavg_ptr = | |
5030 (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg"); | |
5031 if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) { | |
5032 warning("pset_getloadavg function not found"); | |
5033 } | |
5034 } | |
5035 | |
5036 int os::Solaris::_dev_zero_fd = -1; | |
5037 | |
5038 // this is called _before_ the global arguments have been parsed | |
5039 void os::init(void) { | |
5040 _initial_pid = getpid(); | |
5041 | |
5042 max_hrtime = first_hrtime = gethrtime(); | |
5043 | |
5044 init_random(1234567); | |
5045 | |
5046 page_size = sysconf(_SC_PAGESIZE); | |
5047 if (page_size == -1) | |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
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diff
changeset
|
5048 fatal(err_msg("os_solaris.cpp: os::init: sysconf failed (%s)", |
f03d0a26bf83
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1353
diff
changeset
|
5049 strerror(errno))); |
0 | 5050 init_page_sizes((size_t) page_size); |
5051 | |
5052 Solaris::initialize_system_info(); | |
5053 | |
641
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6812587: Use auxv to determine SPARC hardware features on Solaris
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diff
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|
5054 // Initialize misc. symbols as soon as possible, so we can use them |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
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548
diff
changeset
|
5055 // if we need them. |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5056 Solaris::misc_sym_init(); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
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diff
changeset
|
5057 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
5058 int fd = ::open("/dev/zero", O_RDWR); |
0 | 5059 if (fd < 0) { |
1490
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1353
diff
changeset
|
5060 fatal(err_msg("os::init: cannot open /dev/zero (%s)", strerror(errno))); |
0 | 5061 } else { |
5062 Solaris::set_dev_zero_fd(fd); | |
5063 | |
5064 // Close on exec, child won't inherit. | |
5065 fcntl(fd, F_SETFD, FD_CLOEXEC); | |
5066 } | |
5067 | |
5068 clock_tics_per_sec = CLK_TCK; | |
5069 | |
5070 // check if dladdr1() exists; dladdr1 can provide more information than | |
5071 // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9 | |
5072 // and is available on linker patches for 5.7 and 5.8. | |
5073 // libdl.so must have been loaded, this call is just an entry lookup | |
5074 void * hdl = dlopen("libdl.so", RTLD_NOW); | |
5075 if (hdl) | |
5076 dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1")); | |
5077 | |
5078 // (Solaris only) this switches to calls that actually do locking. | |
5079 ThreadCritical::initialize(); | |
5080 | |
5081 main_thread = thr_self(); | |
5082 | |
5083 // Constant minimum stack size allowed. It must be at least | |
5084 // the minimum of what the OS supports (thr_min_stack()), and | |
5085 // enough to allow the thread to get to user bytecode execution. | |
5086 Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed); | |
5087 // If the pagesize of the VM is greater than 8K determine the appropriate | |
5088 // number of initial guard pages. The user can change this with the | |
5089 // command line arguments, if needed. | |
5090 if (vm_page_size() > 8*K) { | |
5091 StackYellowPages = 1; | |
5092 StackRedPages = 1; | |
5093 StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size(); | |
5094 } | |
5095 } | |
5096 | |
5097 // To install functions for atexit system call | |
5098 extern "C" { | |
5099 static void perfMemory_exit_helper() { | |
5100 perfMemory_exit(); | |
5101 } | |
5102 } | |
5103 | |
5104 // this is called _after_ the global arguments have been parsed | |
5105 jint os::init_2(void) { | |
5106 // try to enable extended file IO ASAP, see 6431278 | |
5107 os::Solaris::try_enable_extended_io(); | |
5108 | |
5109 // Allocate a single page and mark it as readable for safepoint polling. Also | |
5110 // use this first mmap call to check support for MAP_ALIGN. | |
5111 address polling_page = (address)Solaris::mmap_chunk((char*)page_size, | |
5112 page_size, | |
5113 MAP_PRIVATE | MAP_ALIGN, | |
5114 PROT_READ); | |
5115 if (polling_page == NULL) { | |
5116 has_map_align = false; | |
5117 polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE, | |
5118 PROT_READ); | |
5119 } | |
5120 | |
5121 os::set_polling_page(polling_page); | |
5122 | |
5123 #ifndef PRODUCT | |
5124 if( Verbose && PrintMiscellaneous ) | |
5125 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
5126 #endif | |
5127 | |
5128 if (!UseMembar) { | |
5129 address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE ); | |
5130 guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page"); | |
5131 os::set_memory_serialize_page( mem_serialize_page ); | |
5132 | |
5133 #ifndef PRODUCT | |
5134 if(Verbose && PrintMiscellaneous) | |
5135 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
5136 #endif | |
5137 } | |
5138 | |
3318
188c9a5d6a6d
7040485: Use transparent huge page on linux by default
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parents:
3292
diff
changeset
|
5139 os::large_page_init(); |
0 | 5140 |
5141 // Check minimum allowable stack size for thread creation and to initialize | |
5142 // the java system classes, including StackOverflowError - depends on page | |
5143 // 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
|
5144 // Add in 2*BytesPerWord times page size to account for VM stack during |
0 | 5145 // 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
|
5146 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
|
5147 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
5148 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size); |
0 | 5149 |
5150 size_t threadStackSizeInBytes = ThreadStackSize * K; | |
5151 if (threadStackSizeInBytes != 0 && | |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
5152 threadStackSizeInBytes < os::Solaris::min_stack_allowed) { |
0 | 5153 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
|
5154 os::Solaris::min_stack_allowed/K); |
0 | 5155 return JNI_ERR; |
5156 } | |
5157 | |
5158 // For 64kbps there will be a 64kb page size, which makes | |
5159 // the usable default stack size quite a bit less. Increase the | |
5160 // stack for 64kb (or any > than 8kb) pages, this increases | |
5161 // virtual memory fragmentation (since we're not creating the | |
5162 // stack on a power of 2 boundary. The real fix for this | |
5163 // should be to fix the guard page mechanism. | |
5164 | |
5165 if (vm_page_size() > 8*K) { | |
5166 threadStackSizeInBytes = (threadStackSizeInBytes != 0) | |
5167 ? threadStackSizeInBytes + | |
5168 ((StackYellowPages + StackRedPages) * vm_page_size()) | |
5169 : 0; | |
5170 ThreadStackSize = threadStackSizeInBytes/K; | |
5171 } | |
5172 | |
5173 // Make the stack size a multiple of the page size so that | |
5174 // the yellow/red zones can be guarded. | |
5175 JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, | |
5176 vm_page_size())); | |
5177 | |
5178 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
|
5179 |
0 | 5180 if (UseNUMA) { |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5181 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
|
5182 UseNUMA = false; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5183 } else { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5184 size_t lgrp_limit = os::numa_get_groups_num(); |
6197 | 5185 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
|
5186 size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit); |
6197 | 5187 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
|
5188 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
|
5189 // 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
|
5190 UseNUMA = false; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5191 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5192 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5193 if (!UseNUMA && ForceNUMA) { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5194 UseNUMA = true; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5195 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5196 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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439
diff
changeset
|
5197 |
0 | 5198 Solaris::signal_sets_init(); |
5199 Solaris::init_signal_mem(); | |
5200 Solaris::install_signal_handlers(); | |
5201 | |
5202 if (libjsigversion < JSIG_VERSION_1_4_1) { | |
5203 Maxlibjsigsigs = OLDMAXSIGNUM; | |
5204 } | |
5205 | |
5206 // initialize synchronization primitives to use either thread or | |
5207 // lwp synchronization (controlled by UseLWPSynchronization) | |
5208 Solaris::synchronization_init(); | |
5209 | |
5210 if (MaxFDLimit) { | |
5211 // set the number of file descriptors to max. print out error | |
5212 // if getrlimit/setrlimit fails but continue regardless. | |
5213 struct rlimit nbr_files; | |
5214 int status = getrlimit(RLIMIT_NOFILE, &nbr_files); | |
5215 if (status != 0) { | |
5216 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5217 perror("os::init_2 getrlimit failed"); | |
5218 } else { | |
5219 nbr_files.rlim_cur = nbr_files.rlim_max; | |
5220 status = setrlimit(RLIMIT_NOFILE, &nbr_files); | |
5221 if (status != 0) { | |
5222 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5223 perror("os::init_2 setrlimit failed"); | |
5224 } | |
5225 } | |
5226 } | |
5227 | |
5228 // Calculate theoretical max. size of Threads to guard gainst | |
5229 // artifical out-of-memory situations, where all available address- | |
5230 // space has been reserved by thread stacks. Default stack size is 1Mb. | |
5231 size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ? | |
5232 JavaThread::stack_size_at_create() : (1*K*K); | |
5233 assert(pre_thread_stack_size != 0, "Must have a stack"); | |
5234 // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when | |
5235 // we should start doing Virtual Memory banging. Currently when the threads will | |
5236 // have used all but 200Mb of space. | |
5237 size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K); | |
5238 Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size; | |
5239 | |
5240 // at-exit methods are called in the reverse order of their registration. | |
5241 // In Solaris 7 and earlier, atexit functions are called on return from | |
5242 // main or as a result of a call to exit(3C). There can be only 32 of | |
5243 // these functions registered and atexit() does not set errno. In Solaris | |
5244 // 8 and later, there is no limit to the number of functions registered | |
5245 // and atexit() sets errno. In addition, in Solaris 8 and later, atexit | |
5246 // functions are called upon dlclose(3DL) in addition to return from main | |
5247 // and exit(3C). | |
5248 | |
5249 if (PerfAllowAtExitRegistration) { | |
5250 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
5251 // atexit functions can be delayed until process exit time, which | |
5252 // can be problematic for embedded VM situations. Embedded VMs should | |
5253 // call DestroyJavaVM() to assure that VM resources are released. | |
5254 | |
5255 // note: perfMemory_exit_helper atexit function may be removed in | |
5256 // the future if the appropriate cleanup code can be added to the | |
5257 // VM_Exit VMOperation's doit method. | |
5258 if (atexit(perfMemory_exit_helper) != 0) { | |
5259 warning("os::init2 atexit(perfMemory_exit_helper) failed"); | |
5260 } | |
5261 } | |
5262 | |
5263 // Init pset_loadavg function pointer | |
5264 init_pset_getloadavg_ptr(); | |
5265 | |
5266 return JNI_OK; | |
5267 } | |
5268 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5269 void os::init_3(void) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5270 return; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5271 } |
0 | 5272 |
5273 // Mark the polling page as unreadable | |
5274 void os::make_polling_page_unreadable(void) { | |
5275 if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 ) | |
5276 fatal("Could not disable polling page"); | |
5277 }; | |
5278 | |
5279 // Mark the polling page as readable | |
5280 void os::make_polling_page_readable(void) { | |
5281 if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 ) | |
5282 fatal("Could not enable polling page"); | |
5283 }; | |
5284 | |
5285 // OS interface. | |
5286 | |
5287 bool os::check_heap(bool force) { return true; } | |
5288 | |
5289 typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr); | |
5290 static vsnprintf_t sol_vsnprintf = NULL; | |
5291 | |
5292 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { | |
5293 if (!sol_vsnprintf) { | |
5294 //search for the named symbol in the objects that were loaded after libjvm | |
5295 void* where = RTLD_NEXT; | |
5296 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5297 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5298 if (!sol_vsnprintf){ | |
5299 //search for the named symbol in the objects that were loaded before libjvm | |
5300 where = RTLD_DEFAULT; | |
5301 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5302 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5303 assert(sol_vsnprintf != NULL, "vsnprintf not found"); | |
5304 } | |
5305 } | |
5306 return (*sol_vsnprintf)(buf, count, fmt, argptr); | |
5307 } | |
5308 | |
5309 | |
5310 // Is a (classpath) directory empty? | |
5311 bool os::dir_is_empty(const char* path) { | |
5312 DIR *dir = NULL; | |
5313 struct dirent *ptr; | |
5314 | |
5315 dir = opendir(path); | |
5316 if (dir == NULL) return true; | |
5317 | |
5318 /* Scan the directory */ | |
5319 bool result = true; | |
5320 char buf[sizeof(struct dirent) + MAX_PATH]; | |
5321 struct dirent *dbuf = (struct dirent *) buf; | |
5322 while (result && (ptr = readdir(dir, dbuf)) != NULL) { | |
5323 if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { | |
5324 result = false; | |
5325 } | |
5326 } | |
5327 closedir(dir); | |
5328 return result; | |
5329 } | |
5330 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5331 // 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
|
5332 // from src/solaris/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5333 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5334 #ifndef O_DELETE |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5335 #define O_DELETE 0x10000 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5336 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5337 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5338 // 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
|
5339 // 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
|
5340 // 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
|
5341 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5342 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
|
5343 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5344 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5345 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5346 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5347 int fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5348 int o_delete = (oflag & O_DELETE); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5349 oflag = oflag & ~O_DELETE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5350 |
2097 | 5351 fd = ::open64(path, oflag, mode); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5352 if (fd == -1) return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5353 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5354 //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
|
5355 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5356 struct stat64 buf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5357 int ret = ::fstat64(fd, &buf64); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5358 int st_mode = buf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5359 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5360 if (ret != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5361 if ((st_mode & S_IFMT) == S_IFDIR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5362 errno = EISDIR; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5363 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5364 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5365 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5366 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5367 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5368 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5369 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5370 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5371 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5372 * 32-bit Solaris systems suffer from: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5373 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5374 * - 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
|
5375 * 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
|
5376 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5377 * - 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
|
5378 * 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
|
5379 * 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
|
5380 * 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
|
5381 * 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
|
5382 * 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
|
5383 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5384 * We attempt to make everything work anyways by: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5385 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5386 * - 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
|
5387 * 256 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5388 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5389 * - 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
|
5390 * 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
|
5391 * 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
|
5392 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5393 * - 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
|
5394 * 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
|
5395 * 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
|
5396 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5397 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5398 * 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
|
5399 * 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
|
5400 * 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
|
5401 * enable_extended_FILE_stdio() in VM initialisation |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5402 * Giri Mandalika's blog |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5403 * 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
|
5404 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5405 #ifndef _LP64 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5406 if ((!enabled_extended_FILE_stdio) && fd < 256) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5407 int newfd = ::fcntl(fd, F_DUPFD, 256); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5408 if (newfd != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5409 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5410 fd = newfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5411 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5412 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5413 #endif // 32-bit Solaris |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5414 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5415 * 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
|
5416 * specifically destined for a subprocess should have the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5417 * 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
|
5418 * 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
|
5419 * 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
|
5420 * UNIXProcess.c), and this in turn might: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5421 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5422 * - 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
|
5423 * descriptors, resulting in mysterious hangs, or |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5424 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5425 * - 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
|
5426 * suffering from bug 1085341. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5427 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5428 * (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
|
5429 * design flaw) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5430 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5431 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5432 * 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
|
5433 * 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
|
5434 * 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
|
5435 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5436 #ifdef FD_CLOEXEC |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5437 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5438 int flags = ::fcntl(fd, F_GETFD); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5439 if (flags != -1) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5440 ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5441 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5442 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5443 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5444 if (o_delete != 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5445 ::unlink(path); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5446 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5447 return fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5448 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5449 |
0 | 5450 // create binary file, rewriting existing file if required |
5451 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
5452 int oflags = O_WRONLY | O_CREAT; | |
5453 if (!rewrite_existing) { | |
5454 oflags |= O_EXCL; | |
5455 } | |
5456 return ::open64(path, oflags, S_IREAD | S_IWRITE); | |
5457 } | |
5458 | |
5459 // return current position of file pointer | |
5460 jlong os::current_file_offset(int fd) { | |
5461 return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); | |
5462 } | |
5463 | |
5464 // move file pointer to the specified offset | |
5465 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
5466 return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); | |
5467 } | |
5468 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5469 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
|
5470 return (jlong) ::lseek64(fd, offset, whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5471 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5472 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5473 char * os::native_path(char *path) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5474 return path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5475 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5476 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5477 int os::ftruncate(int fd, jlong length) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5478 return ::ftruncate64(fd, length); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5479 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5480 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5481 int os::fsync(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5482 RESTARTABLE_RETURN_INT(::fsync(fd)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5483 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5484 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5485 int os::available(int fd, jlong *bytes) { |
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5486 jlong cur, end; |
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5487 int mode; |
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|
5488 struct stat64 buf64; |
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|
5489 |
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5490 if (::fstat64(fd, &buf64) >= 0) { |
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5491 mode = buf64.st_mode; |
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5492 if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { |
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5493 /* |
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5494 * XXX: is the following call interruptible? If so, this might |
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5495 * need to go through the INTERRUPT_IO() wrapper as for other |
828eafbd85cc
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5496 * blocking, interruptible calls in this file. |
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|
5497 */ |
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5498 int n,ioctl_return; |
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|
5499 |
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5500 INTERRUPTIBLE(::ioctl(fd, FIONREAD, &n),ioctl_return,os::Solaris::clear_interrupted); |
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5501 if (ioctl_return>= 0) { |
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|
5502 *bytes = n; |
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|
5503 return 1; |
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|
5504 } |
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|
5505 } |
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|
5506 } |
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|
5507 if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { |
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|
5508 return 0; |
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|
5509 } else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) { |
828eafbd85cc
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|
5510 return 0; |
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|
5511 } else if (::lseek64(fd, cur, SEEK_SET) == -1) { |
828eafbd85cc
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|
5512 return 0; |
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|
5513 } |
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|
5514 *bytes = end - cur; |
828eafbd85cc
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|
5515 return 1; |
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|
5516 } |
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|
5517 |
0 | 5518 // Map a block of memory. |
6197 | 5519 char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5520 char *addr, size_t bytes, bool read_only, |
5521 bool allow_exec) { | |
5522 int prot; | |
5523 int flags; | |
5524 | |
5525 if (read_only) { | |
5526 prot = PROT_READ; | |
5527 flags = MAP_SHARED; | |
5528 } else { | |
5529 prot = PROT_READ | PROT_WRITE; | |
5530 flags = MAP_PRIVATE; | |
5531 } | |
5532 | |
5533 if (allow_exec) { | |
5534 prot |= PROT_EXEC; | |
5535 } | |
5536 | |
5537 if (addr != NULL) { | |
5538 flags |= MAP_FIXED; | |
5539 } | |
5540 | |
5541 char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, | |
5542 fd, file_offset); | |
5543 if (mapped_address == MAP_FAILED) { | |
5544 return NULL; | |
5545 } | |
5546 return mapped_address; | |
5547 } | |
5548 | |
5549 | |
5550 // Remap a block of memory. | |
6197 | 5551 char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5552 char *addr, size_t bytes, bool read_only, |
5553 bool allow_exec) { | |
5554 // same as map_memory() on this OS | |
5555 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
5556 allow_exec); | |
5557 } | |
5558 | |
5559 | |
5560 // Unmap a block of memory. | |
6197 | 5561 bool os::pd_unmap_memory(char* addr, size_t bytes) { |
0 | 5562 return munmap(addr, bytes) == 0; |
5563 } | |
5564 | |
5565 void os::pause() { | |
5566 char filename[MAX_PATH]; | |
5567 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
5568 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
5569 } else { | |
5570 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
5571 } | |
5572 | |
5573 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
5574 if (fd != -1) { | |
5575 struct stat buf; | |
1980
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|
5576 ::close(fd); |
0 | 5577 while (::stat(filename, &buf) == 0) { |
5578 (void)::poll(NULL, 0, 100); | |
5579 } | |
5580 } else { | |
5581 jio_fprintf(stderr, | |
5582 "Could not open pause file '%s', continuing immediately.\n", filename); | |
5583 } | |
5584 } | |
5585 | |
5586 #ifndef PRODUCT | |
5587 #ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5588 // Turn this on if you need to trace synch operations. | |
5589 // Set RECORD_SYNCH_LIMIT to a large-enough value, | |
5590 // and call record_synch_enable and record_synch_disable | |
5591 // around the computation of interest. | |
5592 | |
5593 void record_synch(char* name, bool returning); // defined below | |
5594 | |
5595 class RecordSynch { | |
5596 char* _name; | |
5597 public: | |
5598 RecordSynch(char* name) :_name(name) | |
5599 { record_synch(_name, false); } | |
5600 ~RecordSynch() { record_synch(_name, true); } | |
5601 }; | |
5602 | |
5603 #define CHECK_SYNCH_OP(ret, name, params, args, inner) \ | |
5604 extern "C" ret name params { \ | |
5605 typedef ret name##_t params; \ | |
5606 static name##_t* implem = NULL; \ | |
5607 static int callcount = 0; \ | |
5608 if (implem == NULL) { \ | |
5609 implem = (name##_t*) dlsym(RTLD_NEXT, #name); \ | |
5610 if (implem == NULL) fatal(dlerror()); \ | |
5611 } \ | |
5612 ++callcount; \ | |
5613 RecordSynch _rs(#name); \ | |
5614 inner; \ | |
5615 return implem args; \ | |
5616 } | |
5617 // in dbx, examine callcounts this way: | |
5618 // for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done | |
5619 | |
5620 #define CHECK_POINTER_OK(p) \ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6200
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5621 (!Universe::is_fully_initialized() || !Universe::is_reserved_heap((oop)(p))) |
0 | 5622 #define CHECK_MU \ |
5623 if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only."); | |
5624 #define CHECK_CV \ | |
5625 if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only."); | |
5626 #define CHECK_P(p) \ | |
5627 if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only."); | |
5628 | |
5629 #define CHECK_MUTEX(mutex_op) \ | |
5630 CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU); | |
5631 | |
5632 CHECK_MUTEX( mutex_lock) | |
5633 CHECK_MUTEX( _mutex_lock) | |
5634 CHECK_MUTEX( mutex_unlock) | |
5635 CHECK_MUTEX(_mutex_unlock) | |
5636 CHECK_MUTEX( mutex_trylock) | |
5637 CHECK_MUTEX(_mutex_trylock) | |
5638 | |
5639 #define CHECK_COND(cond_op) \ | |
5640 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV); | |
5641 | |
5642 CHECK_COND( cond_wait); | |
5643 CHECK_COND(_cond_wait); | |
5644 CHECK_COND(_cond_wait_cancel); | |
5645 | |
5646 #define CHECK_COND2(cond_op) \ | |
5647 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV); | |
5648 | |
5649 CHECK_COND2( cond_timedwait); | |
5650 CHECK_COND2(_cond_timedwait); | |
5651 CHECK_COND2(_cond_timedwait_cancel); | |
5652 | |
5653 // do the _lwp_* versions too | |
5654 #define mutex_t lwp_mutex_t | |
5655 #define cond_t lwp_cond_t | |
5656 CHECK_MUTEX( _lwp_mutex_lock) | |
5657 CHECK_MUTEX( _lwp_mutex_unlock) | |
5658 CHECK_MUTEX( _lwp_mutex_trylock) | |
5659 CHECK_MUTEX( __lwp_mutex_lock) | |
5660 CHECK_MUTEX( __lwp_mutex_unlock) | |
5661 CHECK_MUTEX( __lwp_mutex_trylock) | |
5662 CHECK_MUTEX(___lwp_mutex_lock) | |
5663 CHECK_MUTEX(___lwp_mutex_unlock) | |
5664 | |
5665 CHECK_COND( _lwp_cond_wait); | |
5666 CHECK_COND( __lwp_cond_wait); | |
5667 CHECK_COND(___lwp_cond_wait); | |
5668 | |
5669 CHECK_COND2( _lwp_cond_timedwait); | |
5670 CHECK_COND2( __lwp_cond_timedwait); | |
5671 #undef mutex_t | |
5672 #undef cond_t | |
5673 | |
5674 CHECK_SYNCH_OP(int, _lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5675 CHECK_SYNCH_OP(int,__lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5676 CHECK_SYNCH_OP(int, _lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5677 CHECK_SYNCH_OP(int,__lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5678 CHECK_SYNCH_OP(int, _lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5679 CHECK_SYNCH_OP(int,__lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5680 CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5681 CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5682 | |
5683 | |
5684 // recording machinery: | |
5685 | |
5686 enum { RECORD_SYNCH_LIMIT = 200 }; | |
5687 char* record_synch_name[RECORD_SYNCH_LIMIT]; | |
5688 void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT]; | |
5689 bool record_synch_returning[RECORD_SYNCH_LIMIT]; | |
5690 thread_t record_synch_thread[RECORD_SYNCH_LIMIT]; | |
5691 int record_synch_count = 0; | |
5692 bool record_synch_enabled = false; | |
5693 | |
5694 // in dbx, examine recorded data this way: | |
5695 // for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done | |
5696 | |
5697 void record_synch(char* name, bool returning) { | |
5698 if (record_synch_enabled) { | |
5699 if (record_synch_count < RECORD_SYNCH_LIMIT) { | |
5700 record_synch_name[record_synch_count] = name; | |
5701 record_synch_returning[record_synch_count] = returning; | |
5702 record_synch_thread[record_synch_count] = thr_self(); | |
5703 record_synch_arg0ptr[record_synch_count] = &name; | |
5704 record_synch_count++; | |
5705 } | |
5706 // put more checking code here: | |
5707 // ... | |
5708 } | |
5709 } | |
5710 | |
5711 void record_synch_enable() { | |
5712 // start collecting trace data, if not already doing so | |
5713 if (!record_synch_enabled) record_synch_count = 0; | |
5714 record_synch_enabled = true; | |
5715 } | |
5716 | |
5717 void record_synch_disable() { | |
5718 // stop collecting trace data | |
5719 record_synch_enabled = false; | |
5720 } | |
5721 | |
5722 #endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5723 #endif // PRODUCT | |
5724 | |
5725 const intptr_t thr_time_off = (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5726 const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) - | |
5727 (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5728 | |
5729 | |
5730 // JVMTI & JVM monitoring and management support | |
5731 // The thread_cpu_time() and current_thread_cpu_time() are only | |
5732 // supported if is_thread_cpu_time_supported() returns true. | |
5733 // They are not supported on Solaris T1. | |
5734 | |
5735 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
5736 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
5737 // of a thread. | |
5738 // | |
5739 // current_thread_cpu_time() and thread_cpu_time(Thread *) | |
5740 // returns the fast estimate available on the platform. | |
5741 | |
5742 // hrtime_t gethrvtime() return value includes | |
5743 // user time but does not include system time | |
5744 jlong os::current_thread_cpu_time() { | |
5745 return (jlong) gethrvtime(); | |
5746 } | |
5747 | |
5748 jlong os::thread_cpu_time(Thread *thread) { | |
5749 // return user level CPU time only to be consistent with | |
5750 // what current_thread_cpu_time returns. | |
5751 // thread_cpu_time_info() must be changed if this changes | |
5752 return os::thread_cpu_time(thread, false /* user time only */); | |
5753 } | |
5754 | |
5755 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
5756 if (user_sys_cpu_time) { | |
5757 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
5758 } else { | |
5759 return os::current_thread_cpu_time(); | |
5760 } | |
5761 } | |
5762 | |
5763 jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { | |
5764 char proc_name[64]; | |
5765 int count; | |
5766 prusage_t prusage; | |
5767 jlong lwp_time; | |
5768 int fd; | |
5769 | |
5770 sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage", | |
5771 getpid(), | |
5772 thread->osthread()->lwp_id()); | |
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diff
changeset
|
5773 fd = ::open(proc_name, O_RDONLY); |
0 | 5774 if ( fd == -1 ) return -1; |
5775 | |
5776 do { | |
1980
828eafbd85cc
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ikrylov
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diff
changeset
|
5777 count = ::pread(fd, |
0 | 5778 (void *)&prusage.pr_utime, |
5779 thr_time_size, | |
5780 thr_time_off); | |
5781 } while (count < 0 && errno == EINTR); | |
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diff
changeset
|
5782 ::close(fd); |
0 | 5783 if ( count < 0 ) return -1; |
5784 | |
5785 if (user_sys_cpu_time) { | |
5786 // user + system CPU time | |
5787 lwp_time = (((jlong)prusage.pr_stime.tv_sec + | |
5788 (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) + | |
5789 (jlong)prusage.pr_stime.tv_nsec + | |
5790 (jlong)prusage.pr_utime.tv_nsec; | |
5791 } else { | |
5792 // user level CPU time only | |
5793 lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) + | |
5794 (jlong)prusage.pr_utime.tv_nsec; | |
5795 } | |
5796 | |
5797 return(lwp_time); | |
5798 } | |
5799 | |
5800 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
5801 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
5802 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
5803 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
5804 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
5805 } | |
5806 | |
5807 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
5808 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
5809 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
5810 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
5811 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
5812 } | |
5813 | |
5814 bool os::is_thread_cpu_time_supported() { | |
5815 if ( os::Solaris::T2_libthread() || UseBoundThreads ) { | |
5816 return true; | |
5817 } else { | |
5818 return false; | |
5819 } | |
5820 } | |
5821 | |
5822 // System loadavg support. Returns -1 if load average cannot be obtained. | |
5823 // Return the load average for our processor set if the primitive exists | |
5824 // (Solaris 9 and later). Otherwise just return system wide loadavg. | |
5825 int os::loadavg(double loadavg[], int nelem) { | |
5826 if (pset_getloadavg_ptr != NULL) { | |
5827 return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem); | |
5828 } else { | |
5829 return ::getloadavg(loadavg, nelem); | |
5830 } | |
5831 } | |
5832 | |
5833 //--------------------------------------------------------------------------------- | |
5834 | |
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126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
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|
5835 bool os::find(address addr, outputStream* st) { |
0 | 5836 Dl_info dlinfo; |
5837 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
|
5838 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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|
5839 st->print(PTR_FORMAT ": ", addr); |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
parents:
10986
diff
changeset
|
5840 if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) { |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
changeset
|
5841 st->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr); |
11092
59b052799158
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|
5842 } else if (dlinfo.dli_fbase != NULL) |
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126ea7725993
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diff
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|
5843 st->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase); |
0 | 5844 else |
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diff
changeset
|
5845 st->print("<absolute address>"); |
11092
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
dcubed
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10986
diff
changeset
|
5846 if (dlinfo.dli_fname != NULL) { |
59b052799158
8015884: runThese crashed with SIGSEGV, hs_err has an error instead of stacktrace
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5847 st->print(" in %s", dlinfo.dli_fname); |
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5848 } |
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|
5849 if (dlinfo.dli_fbase != NULL) { |
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5850 st->print(" at " PTR_FORMAT, dlinfo.dli_fbase); |
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|
5851 } |
1681
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|
5852 st->cr(); |
0 | 5853 |
5854 if (Verbose) { | |
5855 // decode some bytes around the PC | |
9060
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5856 address begin = clamp_address_in_page(addr-40, addr, os::vm_page_size()); |
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5857 address end = clamp_address_in_page(addr+40, addr, os::vm_page_size()); |
0 | 5858 address lowest = (address) dlinfo.dli_sname; |
5859 if (!lowest) lowest = (address) dlinfo.dli_fbase; | |
5860 if (begin < lowest) begin = lowest; | |
5861 Dl_info dlinfo2; | |
11092
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5862 if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr |
0 | 5863 && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) |
5864 end = (address) dlinfo2.dli_saddr; | |
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5865 Disassembler::decode(begin, end, st); |
0 | 5866 } |
5867 return true; | |
5868 } | |
5869 return false; | |
5870 } | |
5871 | |
5872 // Following function has been added to support HotSparc's libjvm.so running | |
5873 // under Solaris production JDK 1.2.2 / 1.3.0. These came from | |
5874 // src/solaris/hpi/native_threads in the EVM codebase. | |
5875 // | |
5876 // NOTE: This is no longer needed in the 1.3.1 and 1.4 production release | |
5877 // libraries and should thus be removed. We will leave it behind for a while | |
5878 // until we no longer want to able to run on top of 1.3.0 Solaris production | |
5879 // JDK. See 4341971. | |
5880 | |
5881 #define STACK_SLACK 0x800 | |
5882 | |
5883 extern "C" { | |
5884 intptr_t sysThreadAvailableStackWithSlack() { | |
5885 stack_t st; | |
5886 intptr_t retval, stack_top; | |
5887 retval = thr_stksegment(&st); | |
5888 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
5889 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
5890 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
5891 stack_top=(intptr_t)st.ss_sp-st.ss_size; | |
5892 return ((intptr_t)&stack_top - stack_top - STACK_SLACK); | |
5893 } | |
5894 } | |
5895 | |
5896 // ObjectMonitor park-unpark infrastructure ... | |
5897 // | |
5898 // We implement Solaris and Linux PlatformEvents with the | |
5899 // obvious condvar-mutex-flag triple. | |
5900 // Another alternative that works quite well is pipes: | |
5901 // Each PlatformEvent consists of a pipe-pair. | |
5902 // The thread associated with the PlatformEvent | |
5903 // calls park(), which reads from the input end of the pipe. | |
5904 // Unpark() writes into the other end of the pipe. | |
5905 // The write-side of the pipe must be set NDELAY. | |
5906 // Unfortunately pipes consume a large # of handles. | |
5907 // Native solaris lwp_park() and lwp_unpark() work nicely, too. | |
5908 // Using pipes for the 1st few threads might be workable, however. | |
5909 // | |
5910 // park() is permitted to return spuriously. | |
5911 // Callers of park() should wrap the call to park() in | |
5912 // an appropriate loop. A litmus test for the correct | |
5913 // usage of park is the following: if park() were modified | |
5914 // to immediately return 0 your code should still work, | |
5915 // albeit degenerating to a spin loop. | |
5916 // | |
5917 // An interesting optimization for park() is to use a trylock() | |
5918 // to attempt to acquire the mutex. If the trylock() fails | |
5919 // then we know that a concurrent unpark() operation is in-progress. | |
5920 // in that case the park() code could simply set _count to 0 | |
5921 // and return immediately. The subsequent park() operation *might* | |
5922 // return immediately. That's harmless as the caller of park() is | |
5923 // expected to loop. By using trylock() we will have avoided a | |
5924 // avoided a context switch caused by contention on the per-thread mutex. | |
5925 // | |
5926 // TODO-FIXME: | |
5927 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the | |
5928 // objectmonitor implementation. | |
5929 // 2. Collapse the JSR166 parker event, and the | |
5930 // objectmonitor ParkEvent into a single "Event" construct. | |
5931 // 3. In park() and unpark() add: | |
5932 // assert (Thread::current() == AssociatedWith). | |
5933 // 4. add spurious wakeup injection on a -XX:EarlyParkReturn=N switch. | |
5934 // 1-out-of-N park() operations will return immediately. | |
5935 // | |
5936 // _Event transitions in park() | |
5937 // -1 => -1 : illegal | |
5938 // 1 => 0 : pass - return immediately | |
5939 // 0 => -1 : block | |
5940 // | |
5941 // _Event serves as a restricted-range semaphore. | |
5942 // | |
5943 // Another possible encoding of _Event would be with | |
5944 // explicit "PARKED" == 01b and "SIGNALED" == 10b bits. | |
5945 // | |
5946 // TODO-FIXME: add DTRACE probes for: | |
5947 // 1. Tx parks | |
5948 // 2. Ty unparks Tx | |
5949 // 3. Tx resumes from park | |
5950 | |
5951 | |
5952 // value determined through experimentation | |
5953 #define ROUNDINGFIX 11 | |
5954 | |
5955 // utility to compute the abstime argument to timedwait. | |
5956 // TODO-FIXME: switch from compute_abstime() to unpackTime(). | |
5957 | |
5958 static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) { | |
5959 // millis is the relative timeout time | |
5960 // abstime will be the absolute timeout time | |
5961 if (millis < 0) millis = 0; | |
5962 struct timeval now; | |
5963 int status = gettimeofday(&now, NULL); | |
5964 assert(status == 0, "gettimeofday"); | |
5965 jlong seconds = millis / 1000; | |
5966 jlong max_wait_period; | |
5967 | |
5968 if (UseLWPSynchronization) { | |
5969 // forward port of fix for 4275818 (not sleeping long enough) | |
5970 // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where | |
5971 // _lwp_cond_timedwait() used a round_down algorithm rather | |
5972 // than a round_up. For millis less than our roundfactor | |
5973 // it rounded down to 0 which doesn't meet the spec. | |
5974 // For millis > roundfactor we may return a bit sooner, but | |
5975 // since we can not accurately identify the patch level and | |
5976 // this has already been fixed in Solaris 9 and 8 we will | |
5977 // leave it alone rather than always rounding down. | |
5978 | |
5979 if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX; | |
5980 // It appears that when we go directly through Solaris _lwp_cond_timedwait() | |
5981 // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6 | |
5982 max_wait_period = 21000000; | |
5983 } else { | |
5984 max_wait_period = 50000000; | |
5985 } | |
5986 millis %= 1000; | |
5987 if (seconds > max_wait_period) { // see man cond_timedwait(3T) | |
5988 seconds = max_wait_period; | |
5989 } | |
5990 abstime->tv_sec = now.tv_sec + seconds; | |
5991 long usec = now.tv_usec + millis * 1000; | |
5992 if (usec >= 1000000) { | |
5993 abstime->tv_sec += 1; | |
5994 usec -= 1000000; | |
5995 } | |
5996 abstime->tv_nsec = usec * 1000; | |
5997 return abstime; | |
5998 } | |
5999 | |
6000 // Test-and-clear _Event, always leaves _Event set to 0, returns immediately. | |
6001 // Conceptually TryPark() should be equivalent to park(0). | |
6002 | |
6003 int os::PlatformEvent::TryPark() { | |
6004 for (;;) { | |
6005 const int v = _Event ; | |
6006 guarantee ((v == 0) || (v == 1), "invariant") ; | |
6007 if (Atomic::cmpxchg (0, &_Event, v) == v) return v ; | |
6008 } | |
6009 } | |
6010 | |
6011 void os::PlatformEvent::park() { // AKA: down() | |
6012 // Invariant: Only the thread associated with the Event/PlatformEvent | |
6013 // may call park(). | |
6014 int v ; | |
6015 for (;;) { | |
6016 v = _Event ; | |
6017 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
6018 } | |
6019 guarantee (v >= 0, "invariant") ; | |
6020 if (v == 0) { | |
6021 // Do this the hard way by blocking ... | |
6022 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6023 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
6024 // Only for SPARC >= V8PlusA | |
6025 #if defined(__sparc) && defined(COMPILER2) | |
6026 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6027 #endif | |
6028 int status = os::Solaris::mutex_lock(_mutex); | |
6029 assert_status(status == 0, status, "mutex_lock"); | |
6030 guarantee (_nParked == 0, "invariant") ; | |
6031 ++ _nParked ; | |
6032 while (_Event < 0) { | |
6033 // for some reason, under 2.7 lwp_cond_wait() may return ETIME ... | |
6034 // Treat this the same as if the wait was interrupted | |
6035 // With usr/lib/lwp going to kernel, always handle ETIME | |
6036 status = os::Solaris::cond_wait(_cond, _mutex); | |
6037 if (status == ETIME) status = EINTR ; | |
6038 assert_status(status == 0 || status == EINTR, status, "cond_wait"); | |
6039 } | |
6040 -- _nParked ; | |
6041 _Event = 0 ; | |
6042 status = os::Solaris::mutex_unlock(_mutex); | |
6043 assert_status(status == 0, status, "mutex_unlock"); | |
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6044 // Paranoia to ensure our locked and lock-free paths interact |
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6045 // correctly with each other. |
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6046 OrderAccess::fence(); |
0 | 6047 } |
6048 } | |
6049 | |
6050 int os::PlatformEvent::park(jlong millis) { | |
6051 guarantee (_nParked == 0, "invariant") ; | |
6052 int v ; | |
6053 for (;;) { | |
6054 v = _Event ; | |
6055 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
6056 } | |
6057 guarantee (v >= 0, "invariant") ; | |
6058 if (v != 0) return OS_OK ; | |
6059 | |
6060 int ret = OS_TIMEOUT; | |
6061 timestruc_t abst; | |
6062 compute_abstime (&abst, millis); | |
6063 | |
6064 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6065 // For Solaris SPARC set fprs.FEF=0 prior to parking. | |
6066 // Only for SPARC >= V8PlusA | |
6067 #if defined(__sparc) && defined(COMPILER2) | |
6068 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6069 #endif | |
6070 int status = os::Solaris::mutex_lock(_mutex); | |
6071 assert_status(status == 0, status, "mutex_lock"); | |
6072 guarantee (_nParked == 0, "invariant") ; | |
6073 ++ _nParked ; | |
6074 while (_Event < 0) { | |
6075 int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst); | |
6076 assert_status(status == 0 || status == EINTR || | |
6077 status == ETIME || status == ETIMEDOUT, | |
6078 status, "cond_timedwait"); | |
6079 if (!FilterSpuriousWakeups) break ; // previous semantics | |
6080 if (status == ETIME || status == ETIMEDOUT) break ; | |
6081 // We consume and ignore EINTR and spurious wakeups. | |
6082 } | |
6083 -- _nParked ; | |
6084 if (_Event >= 0) ret = OS_OK ; | |
6085 _Event = 0 ; | |
6086 status = os::Solaris::mutex_unlock(_mutex); | |
6087 assert_status(status == 0, status, "mutex_unlock"); | |
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6088 // Paranoia to ensure our locked and lock-free paths interact |
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6089 // correctly with each other. |
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6090 OrderAccess::fence(); |
0 | 6091 return ret; |
6092 } | |
6093 | |
6094 void os::PlatformEvent::unpark() { | |
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6095 // Transitions for _Event: |
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6096 // 0 :=> 1 |
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6097 // 1 :=> 1 |
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6098 // -1 :=> either 0 or 1; must signal target thread |
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6099 // That is, we can safely transition _Event from -1 to either |
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6100 // 0 or 1. Forcing 1 is slightly more efficient for back-to-back |
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6101 // unpark() calls. |
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6102 // See also: "Semaphores in Plan 9" by Mullender & Cox |
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6103 // |
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6104 // Note: Forcing a transition from "-1" to "1" on an unpark() means |
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6105 // that it will take two back-to-back park() calls for the owning |
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6106 // thread to block. This has the benefit of forcing a spurious return |
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6107 // from the first park() call after an unpark() call which will help |
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6108 // shake out uses of park() and unpark() without condition variables. |
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6109 |
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6110 if (Atomic::xchg(1, &_Event) >= 0) return; |
0 | 6111 |
6112 // If the thread associated with the event was parked, wake it. | |
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6113 // Wait for the thread assoc with the PlatformEvent to vacate. |
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6114 int status = os::Solaris::mutex_lock(_mutex); |
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6115 assert_status(status == 0, status, "mutex_lock"); |
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6116 int AnyWaiters = _nParked; |
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6117 status = os::Solaris::mutex_unlock(_mutex); |
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6118 assert_status(status == 0, status, "mutex_unlock"); |
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6119 guarantee(AnyWaiters == 0 || AnyWaiters == 1, "invariant"); |
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6120 if (AnyWaiters != 0) { |
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6121 // We intentional signal *after* dropping the lock |
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6122 // to avoid a common class of futile wakeups. |
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6123 status = os::Solaris::cond_signal(_cond); |
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6124 assert_status(status == 0, status, "cond_signal"); |
0 | 6125 } |
6126 } | |
6127 | |
6128 // JSR166 | |
6129 // ------------------------------------------------------- | |
6130 | |
6131 /* | |
6132 * The solaris and linux implementations of park/unpark are fairly | |
6133 * conservative for now, but can be improved. They currently use a | |
6134 * mutex/condvar pair, plus _counter. | |
6135 * Park decrements _counter if > 0, else does a condvar wait. Unpark | |
6136 * sets count to 1 and signals condvar. Only one thread ever waits | |
6137 * on the condvar. Contention seen when trying to park implies that someone | |
6138 * is unparking you, so don't wait. And spurious returns are fine, so there | |
6139 * is no need to track notifications. | |
6140 */ | |
6141 | |
6142 #define MAX_SECS 100000000 | |
6143 /* | |
6144 * This code is common to linux and solaris and will be moved to a | |
6145 * common place in dolphin. | |
6146 * | |
6147 * The passed in time value is either a relative time in nanoseconds | |
6148 * or an absolute time in milliseconds. Either way it has to be unpacked | |
6149 * into suitable seconds and nanoseconds components and stored in the | |
6150 * given timespec structure. | |
6151 * Given time is a 64-bit value and the time_t used in the timespec is only | |
6152 * a signed-32-bit value (except on 64-bit Linux) we have to watch for | |
6153 * overflow if times way in the future are given. Further on Solaris versions | |
6154 * prior to 10 there is a restriction (see cond_timedwait) that the specified | |
6155 * number of seconds, in abstime, is less than current_time + 100,000,000. | |
6156 * As it will be 28 years before "now + 100000000" will overflow we can | |
6157 * ignore overflow and just impose a hard-limit on seconds using the value | |
6158 * of "now + 100,000,000". This places a limit on the timeout of about 3.17 | |
6159 * years from "now". | |
6160 */ | |
6161 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { | |
6162 assert (time > 0, "convertTime"); | |
6163 | |
6164 struct timeval now; | |
6165 int status = gettimeofday(&now, NULL); | |
6166 assert(status == 0, "gettimeofday"); | |
6167 | |
6168 time_t max_secs = now.tv_sec + MAX_SECS; | |
6169 | |
6170 if (isAbsolute) { | |
6171 jlong secs = time / 1000; | |
6172 if (secs > max_secs) { | |
6173 absTime->tv_sec = max_secs; | |
6174 } | |
6175 else { | |
6176 absTime->tv_sec = secs; | |
6177 } | |
6178 absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; | |
6179 } | |
6180 else { | |
6181 jlong secs = time / NANOSECS_PER_SEC; | |
6182 if (secs >= MAX_SECS) { | |
6183 absTime->tv_sec = max_secs; | |
6184 absTime->tv_nsec = 0; | |
6185 } | |
6186 else { | |
6187 absTime->tv_sec = now.tv_sec + secs; | |
6188 absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; | |
6189 if (absTime->tv_nsec >= NANOSECS_PER_SEC) { | |
6190 absTime->tv_nsec -= NANOSECS_PER_SEC; | |
6191 ++absTime->tv_sec; // note: this must be <= max_secs | |
6192 } | |
6193 } | |
6194 } | |
6195 assert(absTime->tv_sec >= 0, "tv_sec < 0"); | |
6196 assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); | |
6197 assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); | |
6198 assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); | |
6199 } | |
6200 | |
6201 void Parker::park(bool isAbsolute, jlong time) { | |
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changeset
|
6202 // Ideally we'd do something useful while spinning, such |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6203 // as calling unpackTime(). |
0 | 6204 |
6205 // Optional fast-path check: | |
6206 // Return immediately if a permit is available. | |
7629
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6207 // We depend on Atomic::xchg() having full barrier semantics |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6208 // since we are doing a lock-free update to _counter. |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6209 if (Atomic::xchg(0, &_counter) > 0) return; |
0 | 6210 |
6211 // Optional fast-exit: Check interrupt before trying to wait | |
6212 Thread* thread = Thread::current(); | |
6213 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
6214 JavaThread *jt = (JavaThread *)thread; | |
6215 if (Thread::is_interrupted(thread, false)) { | |
6216 return; | |
6217 } | |
6218 | |
6219 // First, demultiplex/decode time arguments | |
6220 timespec absTime; | |
1865
1c352af0135d
6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
acorn
parents:
1681
diff
changeset
|
6221 if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all |
0 | 6222 return; |
6223 } | |
6224 if (time > 0) { | |
6225 // Warning: this code might be exposed to the old Solaris time | |
6226 // round-down bugs. Grep "roundingFix" for details. | |
6227 unpackTime(&absTime, isAbsolute, time); | |
6228 } | |
6229 | |
6230 // Enter safepoint region | |
6231 // Beware of deadlocks such as 6317397. | |
6232 // The per-thread Parker:: _mutex is a classic leaf-lock. | |
6233 // In particular a thread must never block on the Threads_lock while | |
6234 // holding the Parker:: mutex. If safepoints are pending both the | |
6235 // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. | |
6236 ThreadBlockInVM tbivm(jt); | |
6237 | |
6238 // Don't wait if cannot get lock since interference arises from | |
6239 // unblocking. Also. check interrupt before trying wait | |
6240 if (Thread::is_interrupted(thread, false) || | |
6241 os::Solaris::mutex_trylock(_mutex) != 0) { | |
6242 return; | |
6243 } | |
6244 | |
6245 int status ; | |
6246 | |
6247 if (_counter > 0) { // no wait needed | |
6248 _counter = 0; | |
6249 status = os::Solaris::mutex_unlock(_mutex); | |
6250 assert (status == 0, "invariant") ; | |
7629
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
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parents:
7456
diff
changeset
|
6251 // Paranoia to ensure our locked and lock-free paths interact |
22ba8c8ce6a6
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dcubed
parents:
7456
diff
changeset
|
6252 // correctly with each other and Java-level accesses. |
1117
95e9083cf4a7
6822370: ReentrantReadWriteLock: threads hung when there are no threads holding onto the lock (Netra x4450)
dholmes
parents:
894
diff
changeset
|
6253 OrderAccess::fence(); |
0 | 6254 return; |
6255 } | |
6256 | |
6257 #ifdef ASSERT | |
6258 // Don't catch signals while blocked; let the running threads have the signals. | |
6259 // (This allows a debugger to break into the running thread.) | |
6260 sigset_t oldsigs; | |
6261 sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals(); | |
6262 thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); | |
6263 #endif | |
6264 | |
6265 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
6266 jt->set_suspend_equivalent(); | |
6267 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
6268 | |
6269 // Do this the hard way by blocking ... | |
6270 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6271 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
6272 // Only for SPARC >= V8PlusA | |
6273 #if defined(__sparc) && defined(COMPILER2) | |
6274 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6275 #endif | |
6276 | |
6277 if (time == 0) { | |
6278 status = os::Solaris::cond_wait (_cond, _mutex) ; | |
6279 } else { | |
6280 status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime); | |
6281 } | |
6282 // Note that an untimed cond_wait() can sometimes return ETIME on older | |
6283 // versions of the Solaris. | |
6284 assert_status(status == 0 || status == EINTR || | |
6285 status == ETIME || status == ETIMEDOUT, | |
6286 status, "cond_timedwait"); | |
6287 | |
6288 #ifdef ASSERT | |
6289 thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL); | |
6290 #endif | |
6291 _counter = 0 ; | |
6292 status = os::Solaris::mutex_unlock(_mutex); | |
6293 assert_status(status == 0, status, "mutex_unlock") ; | |
7629
22ba8c8ce6a6
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7456
diff
changeset
|
6294 // 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
|
6295 // correctly with each other and Java-level accesses. |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6296 OrderAccess::fence(); |
0 | 6297 |
6298 // If externally suspended while waiting, re-suspend | |
6299 if (jt->handle_special_suspend_equivalent_condition()) { | |
6300 jt->java_suspend_self(); | |
6301 } | |
6302 } | |
6303 | |
6304 void Parker::unpark() { | |
6305 int s, status ; | |
6306 status = os::Solaris::mutex_lock (_mutex) ; | |
6307 assert (status == 0, "invariant") ; | |
6308 s = _counter; | |
6309 _counter = 1; | |
6310 status = os::Solaris::mutex_unlock (_mutex) ; | |
6311 assert (status == 0, "invariant") ; | |
6312 | |
6313 if (s < 1) { | |
6314 status = os::Solaris::cond_signal (_cond) ; | |
6315 assert (status == 0, "invariant") ; | |
6316 } | |
6317 } | |
6318 | |
6319 extern char** environ; | |
6320 | |
6321 // Run the specified command in a separate process. Return its exit value, | |
6322 // or -1 on failure (e.g. can't fork a new process). | |
6323 // Unlike system(), this function can be called from signal handler. It | |
6324 // doesn't block SIGINT et al. | |
6325 int os::fork_and_exec(char* cmd) { | |
6326 char * argv[4]; | |
6327 argv[0] = (char *)"sh"; | |
6328 argv[1] = (char *)"-c"; | |
6329 argv[2] = cmd; | |
6330 argv[3] = NULL; | |
6331 | |
6332 // fork is async-safe, fork1 is not so can't use in signal handler | |
6333 pid_t pid; | |
6334 Thread* t = ThreadLocalStorage::get_thread_slow(); | |
6335 if (t != NULL && t->is_inside_signal_handler()) { | |
6336 pid = fork(); | |
6337 } else { | |
6338 pid = fork1(); | |
6339 } | |
6340 | |
6341 if (pid < 0) { | |
6342 // fork failed | |
6343 warning("fork failed: %s", strerror(errno)); | |
6344 return -1; | |
6345 | |
6346 } else if (pid == 0) { | |
6347 // child process | |
6348 | |
6349 // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris | |
6350 execve("/usr/bin/sh", argv, environ); | |
6351 | |
6352 // execve failed | |
6353 _exit(-1); | |
6354 | |
6355 } else { | |
6356 // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't | |
6357 // care about the actual exit code, for now. | |
6358 | |
6359 int status; | |
6360 | |
6361 // Wait for the child process to exit. This returns immediately if | |
6362 // the child has already exited. */ | |
6363 while (waitpid(pid, &status, 0) < 0) { | |
6364 switch (errno) { | |
6365 case ECHILD: return 0; | |
6366 case EINTR: break; | |
6367 default: return -1; | |
6368 } | |
6369 } | |
6370 | |
6371 if (WIFEXITED(status)) { | |
6372 // The child exited normally; get its exit code. | |
6373 return WEXITSTATUS(status); | |
6374 } else if (WIFSIGNALED(status)) { | |
6375 // The child exited because of a signal | |
6376 // The best value to return is 0x80 + signal number, | |
6377 // because that is what all Unix shells do, and because | |
6378 // it allows callers to distinguish between process exit and | |
6379 // process death by signal. | |
6380 return 0x80 + WTERMSIG(status); | |
6381 } else { | |
6382 // Unknown exit code; pass it through | |
6383 return status; | |
6384 } | |
6385 } | |
6386 } | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
|
6387 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6388 // is_headless_jre() |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6389 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6390 // 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
|
6391 // 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
|
6392 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6393 // 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
|
6394 // 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
|
6395 // |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6396 bool os::is_headless_jre() { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6397 struct stat statbuf; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6398 char buf[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6399 char libmawtpath[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6400 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
|
6401 const char *new_xawtstr = "/libawt_xawt.so"; |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6402 char *p; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6403 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6404 // Get path to libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6405 os::jvm_path(buf, sizeof(buf)); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6406 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6407 // Get rid of libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6408 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6409 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6410 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6411 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6412 // Get rid of client or server |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6413 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6414 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6415 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6416 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6417 // check xawt/libmawt.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6418 strcpy(libmawtpath, buf); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6419 strcat(libmawtpath, xawtstr); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6420 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6421 |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6422 // check libawt_xawt.so |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6423 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
|
6424 strcat(libmawtpath, new_xawtstr); |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6425 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6426 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6427 return true; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6428 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6429 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6430 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
|
6431 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
|
6432 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6433 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6434 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
|
6435 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6436 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6437 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6438 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
|
6439 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6440 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6441 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6442 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
|
6443 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
|
6444 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6445 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6446 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
|
6447 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
|
6448 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6449 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6450 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
|
6451 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
|
6452 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6453 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6454 // 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
|
6455 // 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
|
6456 // 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
|
6457 // "wait forever" value. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6458 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6459 int os::timeout(int fd, long timeout) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6460 int res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6461 struct timeval t; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6462 julong prevtime, newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6463 static const char* aNull = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6464 struct pollfd pfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6465 pfd.fd = fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6466 pfd.events = POLLIN; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6467 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6468 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6469 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
|
6470 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6471 for(;;) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6472 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
|
6473 if(res == OS_ERR && errno == EINTR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6474 if(timeout != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6475 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6476 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
|
6477 timeout -= newtime - prevtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6478 if(timeout <= 0) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6479 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6480 prevtime = newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6481 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6482 } else return res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6483 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6484 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6485 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6486 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
|
6487 int _result; |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6488 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,\ |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6489 os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6490 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6491 // 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
|
6492 // one of two values when errno == EINTR |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6493 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6494 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
|
6495 && (errno == EINTR)) { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6496 /* 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
|
6497 INTERRUPTIBLE(::connect(fd, him, len), _result,\ |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6498 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6499 /* undo these changes */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6500 if (_result == OS_ERR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6501 if (errno == EALREADY) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6502 errno = EINPROGRESS; /* fall through */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6503 } else if (errno == EISCONN) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6504 errno = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6505 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6506 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6507 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6508 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6509 return _result; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6510 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6511 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6512 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
|
6513 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6514 return OS_ERR; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6515 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6516 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
|
6517 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6518 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6519 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6520 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
|
6521 sockaddr* from, socklen_t* fromlen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6522 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
|
6523 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6524 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6525 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6526 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
|
6527 struct sockaddr* to, socklen_t tolen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6528 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
|
6529 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6530 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6531 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6532 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
|
6533 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6534 return OS_OK; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6535 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6536 int ret; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6537 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6538 // 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
|
6539 // 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
|
6540 return (ret == OS_ERR) ? 0 : 1; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6541 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6542 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6543 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
|
6544 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
|
6545 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6546 } |
6200
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6547 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6548 // Get the default path to the core file |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6549 // Returns the length of the string |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6550 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
|
6551 const char* p = get_current_directory(buffer, bufferSize); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6552 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6553 if (p == NULL) { |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6554 assert(p != NULL, "failed to get current directory"); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6555 return 0; |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6556 } |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6557 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6558 return strlen(buffer); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6559 } |