Mercurial > hg > truffle
annotate src/os/solaris/vm/os_solaris.cpp @ 11029:9ba41a4a71ff
8004124: Handle and/or warn about SI_KERNEL
Summary: Detect this crash in the signal handler and give a fatal error message instead of making us chase down bugs that don't reproduce
Reviewed-by: kvn, mgerdin, dholmes
author | coleenp |
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date | Fri, 21 Jun 2013 10:50:19 -0400 |
parents | 1f4355cee9a2 |
children | 59b052799158 dec841e0c9aa |
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 #ifdef _GNU_SOURCE | |
119 // See bug #6514594 | |
120 extern "C" int madvise(caddr_t, size_t, int); | |
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121 extern "C" int memcntl(caddr_t addr, size_t len, int cmd, caddr_t arg, |
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122 int attr, int mask); |
0 | 123 #endif //_GNU_SOURCE |
124 | |
125 /* | |
126 MPSS Changes Start. | |
127 The JVM binary needs to be built and run on pre-Solaris 9 | |
128 systems, but the constants needed by MPSS are only in Solaris 9 | |
129 header files. They are textually replicated here to allow | |
130 building on earlier systems. Once building on Solaris 8 is | |
131 no longer a requirement, these #defines can be replaced by ordinary | |
132 system .h inclusion. | |
133 | |
134 In earlier versions of the JDK and Solaris, we used ISM for large pages. | |
135 But ISM requires shared memory to achieve this and thus has many caveats. | |
136 MPSS is a fully transparent and is a cleaner way to get large pages. | |
137 Although we still require keeping ISM for backward compatiblitiy as well as | |
138 giving the opportunity to use large pages on older systems it is | |
139 recommended that MPSS be used for Solaris 9 and above. | |
140 | |
141 */ | |
142 | |
143 #ifndef MC_HAT_ADVISE | |
144 | |
145 struct memcntl_mha { | |
146 uint_t mha_cmd; /* command(s) */ | |
147 uint_t mha_flags; | |
148 size_t mha_pagesize; | |
149 }; | |
150 #define MC_HAT_ADVISE 7 /* advise hat map size */ | |
151 #define MHA_MAPSIZE_VA 0x1 /* set preferred page size */ | |
152 #define MAP_ALIGN 0x200 /* addr specifies alignment */ | |
153 | |
154 #endif | |
155 // MPSS Changes End. | |
156 | |
157 | |
158 // Here are some liblgrp types from sys/lgrp_user.h to be able to | |
159 // compile on older systems without this header file. | |
160 | |
161 #ifndef MADV_ACCESS_LWP | |
162 # define MADV_ACCESS_LWP 7 /* next LWP to access heavily */ | |
163 #endif | |
164 #ifndef MADV_ACCESS_MANY | |
165 # define MADV_ACCESS_MANY 8 /* many processes to access heavily */ | |
166 #endif | |
167 | |
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168 #ifndef LGRP_RSRC_CPU |
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169 # define LGRP_RSRC_CPU 0 /* CPU resources */ |
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170 #endif |
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171 #ifndef LGRP_RSRC_MEM |
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172 # define LGRP_RSRC_MEM 1 /* memory resources */ |
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173 #endif |
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174 |
0 | 175 // Some more macros from sys/mman.h that are not present in Solaris 8. |
176 | |
177 #ifndef MAX_MEMINFO_CNT | |
178 /* | |
179 * info_req request type definitions for meminfo | |
180 * request types starting with MEMINFO_V are used for Virtual addresses | |
181 * and should not be mixed with MEMINFO_PLGRP which is targeted for Physical | |
182 * addresses | |
183 */ | |
184 # define MEMINFO_SHIFT 16 | |
185 # define MEMINFO_MASK (0xFF << MEMINFO_SHIFT) | |
186 # define MEMINFO_VPHYSICAL (0x01 << MEMINFO_SHIFT) /* get physical addr */ | |
187 # define MEMINFO_VLGRP (0x02 << MEMINFO_SHIFT) /* get lgroup */ | |
188 # define MEMINFO_VPAGESIZE (0x03 << MEMINFO_SHIFT) /* size of phys page */ | |
189 # define MEMINFO_VREPLCNT (0x04 << MEMINFO_SHIFT) /* no. of replica */ | |
190 # define MEMINFO_VREPL (0x05 << MEMINFO_SHIFT) /* physical replica */ | |
191 # define MEMINFO_VREPL_LGRP (0x06 << MEMINFO_SHIFT) /* lgrp of replica */ | |
192 # define MEMINFO_PLGRP (0x07 << MEMINFO_SHIFT) /* lgroup for paddr */ | |
193 | |
194 /* maximum number of addresses meminfo() can process at a time */ | |
195 # define MAX_MEMINFO_CNT 256 | |
196 | |
197 /* maximum number of request types */ | |
198 # define MAX_MEMINFO_REQ 31 | |
199 #endif | |
200 | |
201 // see thr_setprio(3T) for the basis of these numbers | |
202 #define MinimumPriority 0 | |
203 #define NormalPriority 64 | |
204 #define MaximumPriority 127 | |
205 | |
206 // Values for ThreadPriorityPolicy == 1 | |
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207 int prio_policy1[CriticalPriority+1] = { |
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208 -99999, 0, 16, 32, 48, 64, |
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209 80, 96, 112, 124, 127, 127 }; |
0 | 210 |
211 // System parameters used internally | |
212 static clock_t clock_tics_per_sec = 100; | |
213 | |
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214 // Track if we have called enable_extended_FILE_stdio (on Solaris 10u4+) |
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215 static bool enabled_extended_FILE_stdio = false; |
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216 |
0 | 217 // For diagnostics to print a message once. see run_periodic_checks |
218 static bool check_addr0_done = false; | |
219 static sigset_t check_signal_done; | |
220 static bool check_signals = true; | |
221 | |
222 address os::Solaris::handler_start; // start pc of thr_sighndlrinfo | |
223 address os::Solaris::handler_end; // end pc of thr_sighndlrinfo | |
224 | |
225 address os::Solaris::_main_stack_base = NULL; // 4352906 workaround | |
226 | |
227 | |
228 // "default" initializers for missing libc APIs | |
229 extern "C" { | |
230 static int lwp_mutex_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
231 static int lwp_mutex_destroy(mutex_t *mx) { return 0; } | |
232 | |
233 static int lwp_cond_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
234 static int lwp_cond_destroy(cond_t *cv) { return 0; } | |
235 } | |
236 | |
237 // "default" initializers for pthread-based synchronization | |
238 extern "C" { | |
239 static int pthread_mutex_default_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } | |
240 static int pthread_cond_default_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } | |
241 } | |
242 | |
10405 | 243 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time); |
244 | |
0 | 245 // Thread Local Storage |
246 // This is common to all Solaris platforms so it is defined here, | |
247 // in this common file. | |
248 // The declarations are in the os_cpu threadLS*.hpp files. | |
249 // | |
250 // Static member initialization for TLS | |
251 Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL}; | |
252 | |
253 #ifndef PRODUCT | |
254 #define _PCT(n,d) ((100.0*(double)(n))/(double)(d)) | |
255 | |
256 int ThreadLocalStorage::_tcacheHit = 0; | |
257 int ThreadLocalStorage::_tcacheMiss = 0; | |
258 | |
259 void ThreadLocalStorage::print_statistics() { | |
260 int total = _tcacheMiss+_tcacheHit; | |
261 tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n", | |
262 _tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total)); | |
263 } | |
264 #undef _PCT | |
265 #endif // PRODUCT | |
266 | |
267 Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id, | |
268 int index) { | |
269 Thread *thread = get_thread_slow(); | |
270 if (thread != NULL) { | |
271 address sp = os::current_stack_pointer(); | |
272 guarantee(thread->_stack_base == NULL || | |
273 (sp <= thread->_stack_base && | |
274 sp >= thread->_stack_base - thread->_stack_size) || | |
275 is_error_reported(), | |
276 "sp must be inside of selected thread stack"); | |
277 | |
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278 thread->set_self_raw_id(raw_id); // mark for quick retrieval |
0 | 279 _get_thread_cache[ index ] = thread; |
280 } | |
281 return thread; | |
282 } | |
283 | |
284 | |
285 static const double all_zero[ sizeof(Thread) / sizeof(double) + 1 ] = {0}; | |
286 #define NO_CACHED_THREAD ((Thread*)all_zero) | |
287 | |
288 void ThreadLocalStorage::pd_set_thread(Thread* thread) { | |
289 | |
290 // Store the new value before updating the cache to prevent a race | |
291 // between get_thread_via_cache_slowly() and this store operation. | |
292 os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread); | |
293 | |
294 // Update thread cache with new thread if setting on thread create, | |
295 // or NO_CACHED_THREAD (zeroed) thread if resetting thread on exit. | |
296 uintptr_t raw = pd_raw_thread_id(); | |
297 int ix = pd_cache_index(raw); | |
298 _get_thread_cache[ix] = thread == NULL ? NO_CACHED_THREAD : thread; | |
299 } | |
300 | |
301 void ThreadLocalStorage::pd_init() { | |
302 for (int i = 0; i < _pd_cache_size; i++) { | |
303 _get_thread_cache[i] = NO_CACHED_THREAD; | |
304 } | |
305 } | |
306 | |
307 // Invalidate all the caches (happens to be the same as pd_init). | |
308 void ThreadLocalStorage::pd_invalidate_all() { pd_init(); } | |
309 | |
310 #undef NO_CACHED_THREAD | |
311 | |
312 // END Thread Local Storage | |
313 | |
314 static inline size_t adjust_stack_size(address base, size_t size) { | |
315 if ((ssize_t)size < 0) { | |
316 // 4759953: Compensate for ridiculous stack size. | |
317 size = max_intx; | |
318 } | |
319 if (size > (size_t)base) { | |
320 // 4812466: Make sure size doesn't allow the stack to wrap the address space. | |
321 size = (size_t)base; | |
322 } | |
323 return size; | |
324 } | |
325 | |
326 static inline stack_t get_stack_info() { | |
327 stack_t st; | |
328 int retval = thr_stksegment(&st); | |
329 st.ss_size = adjust_stack_size((address)st.ss_sp, st.ss_size); | |
330 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
331 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
332 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
333 return st; | |
334 } | |
335 | |
336 address os::current_stack_base() { | |
337 int r = thr_main() ; | |
338 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
339 bool is_primordial_thread = r; | |
340 | |
341 // Workaround 4352906, avoid calls to thr_stksegment by | |
342 // thr_main after the first one (it looks like we trash | |
343 // some data, causing the value for ss_sp to be incorrect). | |
344 if (!is_primordial_thread || os::Solaris::_main_stack_base == NULL) { | |
345 stack_t st = get_stack_info(); | |
346 if (is_primordial_thread) { | |
347 // cache initial value of stack base | |
348 os::Solaris::_main_stack_base = (address)st.ss_sp; | |
349 } | |
350 return (address)st.ss_sp; | |
351 } else { | |
352 guarantee(os::Solaris::_main_stack_base != NULL, "Attempt to use null cached stack base"); | |
353 return os::Solaris::_main_stack_base; | |
354 } | |
355 } | |
356 | |
357 size_t os::current_stack_size() { | |
358 size_t size; | |
359 | |
360 int r = thr_main() ; | |
361 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
362 if(!r) { | |
363 size = get_stack_info().ss_size; | |
364 } else { | |
365 struct rlimit limits; | |
366 getrlimit(RLIMIT_STACK, &limits); | |
367 size = adjust_stack_size(os::Solaris::_main_stack_base, (size_t)limits.rlim_cur); | |
368 } | |
369 // base may not be page aligned | |
370 address base = current_stack_base(); | |
371 address bottom = (address)align_size_up((intptr_t)(base - size), os::vm_page_size());; | |
372 return (size_t)(base - bottom); | |
373 } | |
374 | |
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375 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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376 return localtime_r(clock, res); |
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377 } |
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378 |
0 | 379 // interruptible infrastructure |
380 | |
381 // setup_interruptible saves the thread state before going into an | |
382 // interruptible system call. | |
383 // The saved state is used to restore the thread to | |
384 // its former state whether or not an interrupt is received. | |
385 // Used by classloader os::read | |
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386 // os::restartable_read calls skip this layer and stay in _thread_in_native |
0 | 387 |
388 void os::Solaris::setup_interruptible(JavaThread* thread) { | |
389 | |
390 JavaThreadState thread_state = thread->thread_state(); | |
391 | |
392 assert(thread_state != _thread_blocked, "Coming from the wrong thread"); | |
393 assert(thread_state != _thread_in_native, "Native threads skip setup_interruptible"); | |
394 OSThread* osthread = thread->osthread(); | |
395 osthread->set_saved_interrupt_thread_state(thread_state); | |
396 thread->frame_anchor()->make_walkable(thread); | |
397 ThreadStateTransition::transition(thread, thread_state, _thread_blocked); | |
398 } | |
399 | |
400 // Version of setup_interruptible() for threads that are already in | |
401 // _thread_blocked. Used by os_sleep(). | |
402 void os::Solaris::setup_interruptible_already_blocked(JavaThread* thread) { | |
403 thread->frame_anchor()->make_walkable(thread); | |
404 } | |
405 | |
406 JavaThread* os::Solaris::setup_interruptible() { | |
407 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
408 setup_interruptible(thread); | |
409 return thread; | |
410 } | |
411 | |
412 void os::Solaris::try_enable_extended_io() { | |
413 typedef int (*enable_extended_FILE_stdio_t)(int, int); | |
414 | |
415 if (!UseExtendedFileIO) { | |
416 return; | |
417 } | |
418 | |
419 enable_extended_FILE_stdio_t enabler = | |
420 (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT, | |
421 "enable_extended_FILE_stdio"); | |
422 if (enabler) { | |
423 enabler(-1, -1); | |
424 } | |
425 } | |
426 | |
427 | |
428 #ifdef ASSERT | |
429 | |
430 JavaThread* os::Solaris::setup_interruptible_native() { | |
431 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); | |
432 JavaThreadState thread_state = thread->thread_state(); | |
433 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
434 return thread; | |
435 } | |
436 | |
437 void os::Solaris::cleanup_interruptible_native(JavaThread* thread) { | |
438 JavaThreadState thread_state = thread->thread_state(); | |
439 assert(thread_state == _thread_in_native, "Assumed thread_in_native"); | |
440 } | |
441 #endif | |
442 | |
443 // cleanup_interruptible reverses the effects of setup_interruptible | |
444 // setup_interruptible_already_blocked() does not need any cleanup. | |
445 | |
446 void os::Solaris::cleanup_interruptible(JavaThread* thread) { | |
447 OSThread* osthread = thread->osthread(); | |
448 | |
449 ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state()); | |
450 } | |
451 | |
452 // I/O interruption related counters called in _INTERRUPTIBLE | |
453 | |
454 void os::Solaris::bump_interrupted_before_count() { | |
455 RuntimeService::record_interrupted_before_count(); | |
456 } | |
457 | |
458 void os::Solaris::bump_interrupted_during_count() { | |
459 RuntimeService::record_interrupted_during_count(); | |
460 } | |
461 | |
462 static int _processors_online = 0; | |
463 | |
464 jint os::Solaris::_os_thread_limit = 0; | |
465 volatile jint os::Solaris::_os_thread_count = 0; | |
466 | |
467 julong os::available_memory() { | |
468 return Solaris::available_memory(); | |
469 } | |
470 | |
471 julong os::Solaris::available_memory() { | |
472 return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size(); | |
473 } | |
474 | |
475 julong os::Solaris::_physical_memory = 0; | |
476 | |
477 julong os::physical_memory() { | |
478 return Solaris::physical_memory(); | |
479 } | |
480 | |
481 static hrtime_t first_hrtime = 0; | |
482 static const hrtime_t hrtime_hz = 1000*1000*1000; | |
483 const int LOCK_BUSY = 1; | |
484 const int LOCK_FREE = 0; | |
485 const int LOCK_INVALID = -1; | |
486 static volatile hrtime_t max_hrtime = 0; | |
487 static volatile int max_hrtime_lock = LOCK_FREE; // Update counter with LSB as lock-in-progress | |
488 | |
489 | |
490 void os::Solaris::initialize_system_info() { | |
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491 set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); |
0 | 492 _processors_online = sysconf (_SC_NPROCESSORS_ONLN); |
493 _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); | |
494 } | |
495 | |
496 int os::active_processor_count() { | |
497 int online_cpus = sysconf(_SC_NPROCESSORS_ONLN); | |
498 pid_t pid = getpid(); | |
499 psetid_t pset = PS_NONE; | |
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500 // Are we running in a processor set or is there any processor set around? |
0 | 501 if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) { |
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502 uint_t pset_cpus; |
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503 // Query the number of cpus available to us. |
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504 if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) { |
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505 assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check"); |
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506 _processors_online = pset_cpus; |
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507 return pset_cpus; |
0 | 508 } |
509 } | |
510 // Otherwise return number of online cpus | |
511 return online_cpus; | |
512 } | |
513 | |
514 static bool find_processors_in_pset(psetid_t pset, | |
515 processorid_t** id_array, | |
516 uint_t* id_length) { | |
517 bool result = false; | |
518 // Find the number of processors in the processor set. | |
519 if (pset_info(pset, NULL, id_length, NULL) == 0) { | |
520 // Make up an array to hold their ids. | |
6197 | 521 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 522 // Fill in the array with their processor ids. |
523 if (pset_info(pset, NULL, id_length, *id_array) == 0) { | |
524 result = true; | |
525 } | |
526 } | |
527 return result; | |
528 } | |
529 | |
530 // Callers of find_processors_online() must tolerate imprecise results -- | |
531 // the system configuration can change asynchronously because of DR | |
532 // or explicit psradm operations. | |
533 // | |
534 // We also need to take care that the loop (below) terminates as the | |
535 // number of processors online can change between the _SC_NPROCESSORS_ONLN | |
536 // request and the loop that builds the list of processor ids. Unfortunately | |
537 // there's no reliable way to determine the maximum valid processor id, | |
538 // so we use a manifest constant, MAX_PROCESSOR_ID, instead. See p_online | |
539 // man pages, which claim the processor id set is "sparse, but | |
540 // not too sparse". MAX_PROCESSOR_ID is used to ensure that we eventually | |
541 // exit the loop. | |
542 // | |
543 // In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's | |
544 // not available on S8.0. | |
545 | |
546 static bool find_processors_online(processorid_t** id_array, | |
547 uint* id_length) { | |
548 const processorid_t MAX_PROCESSOR_ID = 100000 ; | |
549 // Find the number of processors online. | |
550 *id_length = sysconf(_SC_NPROCESSORS_ONLN); | |
551 // Make up an array to hold their ids. | |
6197 | 552 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal); |
0 | 553 // Processors need not be numbered consecutively. |
554 long found = 0; | |
555 processorid_t next = 0; | |
556 while (found < *id_length && next < MAX_PROCESSOR_ID) { | |
557 processor_info_t info; | |
558 if (processor_info(next, &info) == 0) { | |
559 // NB, PI_NOINTR processors are effectively online ... | |
560 if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) { | |
561 (*id_array)[found] = next; | |
562 found += 1; | |
563 } | |
564 } | |
565 next += 1; | |
566 } | |
567 if (found < *id_length) { | |
568 // The loop above didn't identify the expected number of processors. | |
569 // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN) | |
570 // and re-running the loop, above, but there's no guarantee of progress | |
571 // if the system configuration is in flux. Instead, we just return what | |
572 // we've got. Note that in the worst case find_processors_online() could | |
573 // return an empty set. (As a fall-back in the case of the empty set we | |
574 // could just return the ID of the current processor). | |
575 *id_length = found ; | |
576 } | |
577 | |
578 return true; | |
579 } | |
580 | |
581 static bool assign_distribution(processorid_t* id_array, | |
582 uint id_length, | |
583 uint* distribution, | |
584 uint distribution_length) { | |
585 // We assume we can assign processorid_t's to uint's. | |
586 assert(sizeof(processorid_t) == sizeof(uint), | |
587 "can't convert processorid_t to uint"); | |
588 // Quick check to see if we won't succeed. | |
589 if (id_length < distribution_length) { | |
590 return false; | |
591 } | |
592 // Assign processor ids to the distribution. | |
593 // Try to shuffle processors to distribute work across boards, | |
594 // assuming 4 processors per board. | |
595 const uint processors_per_board = ProcessDistributionStride; | |
596 // Find the maximum processor id. | |
597 processorid_t max_id = 0; | |
598 for (uint m = 0; m < id_length; m += 1) { | |
599 max_id = MAX2(max_id, id_array[m]); | |
600 } | |
601 // The next id, to limit loops. | |
602 const processorid_t limit_id = max_id + 1; | |
603 // Make up markers for available processors. | |
6197 | 604 bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id, mtInternal); |
0 | 605 for (uint c = 0; c < limit_id; c += 1) { |
606 available_id[c] = false; | |
607 } | |
608 for (uint a = 0; a < id_length; a += 1) { | |
609 available_id[id_array[a]] = true; | |
610 } | |
611 // Step by "boards", then by "slot", copying to "assigned". | |
612 // NEEDS_CLEANUP: The assignment of processors should be stateful, | |
613 // remembering which processors have been assigned by | |
614 // previous calls, etc., so as to distribute several | |
615 // independent calls of this method. What we'd like is | |
616 // It would be nice to have an API that let us ask | |
617 // how many processes are bound to a processor, | |
618 // but we don't have that, either. | |
619 // In the short term, "board" is static so that | |
620 // subsequent distributions don't all start at board 0. | |
621 static uint board = 0; | |
622 uint assigned = 0; | |
623 // Until we've found enough processors .... | |
624 while (assigned < distribution_length) { | |
625 // ... find the next available processor in the board. | |
626 for (uint slot = 0; slot < processors_per_board; slot += 1) { | |
627 uint try_id = board * processors_per_board + slot; | |
628 if ((try_id < limit_id) && (available_id[try_id] == true)) { | |
629 distribution[assigned] = try_id; | |
630 available_id[try_id] = false; | |
631 assigned += 1; | |
632 break; | |
633 } | |
634 } | |
635 board += 1; | |
636 if (board * processors_per_board + 0 >= limit_id) { | |
637 board = 0; | |
638 } | |
639 } | |
640 if (available_id != NULL) { | |
6197 | 641 FREE_C_HEAP_ARRAY(bool, available_id, mtInternal); |
0 | 642 } |
643 return true; | |
644 } | |
645 | |
4006 | 646 void os::set_native_thread_name(const char *name) { |
647 // Not yet implemented. | |
648 return; | |
649 } | |
650 | |
0 | 651 bool os::distribute_processes(uint length, uint* distribution) { |
652 bool result = false; | |
653 // Find the processor id's of all the available CPUs. | |
654 processorid_t* id_array = NULL; | |
655 uint id_length = 0; | |
656 // There are some races between querying information and using it, | |
657 // since processor sets can change dynamically. | |
658 psetid_t pset = PS_NONE; | |
659 // Are we running in a processor set? | |
660 if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) { | |
661 result = find_processors_in_pset(pset, &id_array, &id_length); | |
662 } else { | |
663 result = find_processors_online(&id_array, &id_length); | |
664 } | |
665 if (result == true) { | |
666 if (id_length >= length) { | |
667 result = assign_distribution(id_array, id_length, distribution, length); | |
668 } else { | |
669 result = false; | |
670 } | |
671 } | |
672 if (id_array != NULL) { | |
6197 | 673 FREE_C_HEAP_ARRAY(processorid_t, id_array, mtInternal); |
0 | 674 } |
675 return result; | |
676 } | |
677 | |
678 bool os::bind_to_processor(uint processor_id) { | |
679 // We assume that a processorid_t can be stored in a uint. | |
680 assert(sizeof(uint) == sizeof(processorid_t), | |
681 "can't convert uint to processorid_t"); | |
682 int bind_result = | |
683 processor_bind(P_LWPID, // bind LWP. | |
684 P_MYID, // bind current LWP. | |
685 (processorid_t) processor_id, // id. | |
686 NULL); // don't return old binding. | |
687 return (bind_result == 0); | |
688 } | |
689 | |
690 bool os::getenv(const char* name, char* buffer, int len) { | |
691 char* val = ::getenv( name ); | |
692 if ( val == NULL | |
693 || strlen(val) + 1 > len ) { | |
694 if (len > 0) buffer[0] = 0; // return a null string | |
695 return false; | |
696 } | |
697 strcpy( buffer, val ); | |
698 return true; | |
699 } | |
700 | |
701 | |
702 // Return true if user is running as root. | |
703 | |
704 bool os::have_special_privileges() { | |
705 static bool init = false; | |
706 static bool privileges = false; | |
707 if (!init) { | |
708 privileges = (getuid() != geteuid()) || (getgid() != getegid()); | |
709 init = true; | |
710 } | |
711 return privileges; | |
712 } | |
713 | |
714 | |
715 void os::init_system_properties_values() { | |
716 char arch[12]; | |
717 sysinfo(SI_ARCHITECTURE, arch, sizeof(arch)); | |
718 | |
719 // The next steps are taken in the product version: | |
720 // | |
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721 // Obtain the JAVA_HOME value from the location of libjvm.so. |
0 | 722 // This library should be located at: |
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723 // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm.so. |
0 | 724 // |
725 // If "/jre/lib/" appears at the right place in the path, then we | |
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726 // assume libjvm.so is installed in a JDK and we use this path. |
0 | 727 // |
728 // Otherwise exit with message: "Could not create the Java virtual machine." | |
729 // | |
730 // The following extra steps are taken in the debugging version: | |
731 // | |
732 // If "/jre/lib/" does NOT appear at the right place in the path | |
733 // instead of exit check for $JAVA_HOME environment variable. | |
734 // | |
735 // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, | |
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736 // then we append a fake suffix "hotspot/libjvm.so" to this path so |
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737 // it looks like libjvm.so is installed there |
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738 // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm.so. |
0 | 739 // |
740 // Otherwise exit. | |
741 // | |
742 // Important note: if the location of libjvm.so changes this | |
743 // code needs to be changed accordingly. | |
744 | |
745 // The next few definitions allow the code to be verbatim: | |
6197 | 746 #define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n), mtInternal) |
747 #define free(p) FREE_C_HEAP_ARRAY(char, p, mtInternal) | |
0 | 748 #define getenv(n) ::getenv(n) |
749 | |
750 #define EXTENSIONS_DIR "/lib/ext" | |
751 #define ENDORSED_DIR "/lib/endorsed" | |
752 #define COMMON_DIR "/usr/jdk/packages" | |
753 | |
754 { | |
755 /* sysclasspath, java_home, dll_dir */ | |
756 { | |
757 char *home_path; | |
758 char *dll_path; | |
759 char *pslash; | |
760 char buf[MAXPATHLEN]; | |
761 os::jvm_path(buf, sizeof(buf)); | |
762 | |
763 // Found the full path to libjvm.so. | |
764 // Now cut the path to <java_home>/jre if we can. | |
765 *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ | |
766 pslash = strrchr(buf, '/'); | |
767 if (pslash != NULL) | |
768 *pslash = '\0'; /* get rid of /{client|server|hotspot} */ | |
769 dll_path = malloc(strlen(buf) + 1); | |
770 if (dll_path == NULL) | |
771 return; | |
772 strcpy(dll_path, buf); | |
773 Arguments::set_dll_dir(dll_path); | |
774 | |
775 if (pslash != NULL) { | |
776 pslash = strrchr(buf, '/'); | |
777 if (pslash != NULL) { | |
778 *pslash = '\0'; /* get rid of /<arch> */ | |
779 pslash = strrchr(buf, '/'); | |
780 if (pslash != NULL) | |
781 *pslash = '\0'; /* get rid of /lib */ | |
782 } | |
783 } | |
784 | |
785 home_path = malloc(strlen(buf) + 1); | |
786 if (home_path == NULL) | |
787 return; | |
788 strcpy(home_path, buf); | |
789 Arguments::set_java_home(home_path); | |
790 | |
791 if (!set_boot_path('/', ':')) | |
792 return; | |
793 } | |
794 | |
795 /* | |
796 * Where to look for native libraries | |
797 */ | |
798 { | |
799 // Use dlinfo() to determine the correct java.library.path. | |
800 // | |
801 // If we're launched by the Java launcher, and the user | |
802 // does not set java.library.path explicitly on the commandline, | |
803 // the Java launcher sets LD_LIBRARY_PATH for us and unsets | |
804 // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64. In this case | |
805 // dlinfo returns LD_LIBRARY_PATH + crle settings (including | |
806 // /usr/lib), which is exactly what we want. | |
807 // | |
808 // If the user does set java.library.path, it completely | |
809 // overwrites this setting, and always has. | |
810 // | |
811 // If we're not launched by the Java launcher, we may | |
812 // get here with any/all of the LD_LIBRARY_PATH[_32|64] | |
813 // settings. Again, dlinfo does exactly what we want. | |
814 | |
815 Dl_serinfo _info, *info = &_info; | |
816 Dl_serpath *path; | |
817 char* library_path; | |
818 char *common_path; | |
819 int i; | |
820 | |
821 // determine search path count and required buffer size | |
822 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) { | |
823 vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror()); | |
824 } | |
825 | |
826 // allocate new buffer and initialize | |
827 info = (Dl_serinfo*)malloc(_info.dls_size); | |
828 if (info == NULL) { | |
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829 vm_exit_out_of_memory(_info.dls_size, OOM_MALLOC_ERROR, |
0 | 830 "init_system_properties_values info"); |
831 } | |
832 info->dls_size = _info.dls_size; | |
833 info->dls_cnt = _info.dls_cnt; | |
834 | |
835 // obtain search path information | |
836 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) { | |
837 free(info); | |
838 vm_exit_during_initialization("dlinfo SERINFO request", dlerror()); | |
839 } | |
840 | |
841 path = &info->dls_serpath[0]; | |
842 | |
843 // Note: Due to a legacy implementation, most of the library path | |
844 // is set in the launcher. This was to accomodate linking restrictions | |
845 // on legacy Solaris implementations (which are no longer supported). | |
846 // Eventually, all the library path setting will be done here. | |
847 // | |
848 // However, to prevent the proliferation of improperly built native | |
849 // libraries, the new path component /usr/jdk/packages is added here. | |
850 | |
851 // Determine the actual CPU architecture. | |
852 char cpu_arch[12]; | |
853 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); | |
854 #ifdef _LP64 | |
855 // If we are a 64-bit vm, perform the following translations: | |
856 // sparc -> sparcv9 | |
857 // i386 -> amd64 | |
858 if (strcmp(cpu_arch, "sparc") == 0) | |
859 strcat(cpu_arch, "v9"); | |
860 else if (strcmp(cpu_arch, "i386") == 0) | |
861 strcpy(cpu_arch, "amd64"); | |
862 #endif | |
863 | |
864 // Construct the invariant part of ld_library_path. Note that the | |
865 // space for the colon and the trailing null are provided by the | |
866 // nulls included by the sizeof operator. | |
867 size_t bufsize = sizeof(COMMON_DIR) + sizeof("/lib/") + strlen(cpu_arch); | |
868 common_path = malloc(bufsize); | |
869 if (common_path == NULL) { | |
870 free(info); | |
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871 vm_exit_out_of_memory(bufsize, OOM_MALLOC_ERROR, |
0 | 872 "init_system_properties_values common_path"); |
873 } | |
874 sprintf(common_path, COMMON_DIR "/lib/%s", cpu_arch); | |
875 | |
876 // struct size is more than sufficient for the path components obtained | |
877 // through the dlinfo() call, so only add additional space for the path | |
878 // components explicitly added here. | |
879 bufsize = info->dls_size + strlen(common_path); | |
880 library_path = malloc(bufsize); | |
881 if (library_path == NULL) { | |
882 free(info); | |
883 free(common_path); | |
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884 vm_exit_out_of_memory(bufsize, OOM_MALLOC_ERROR, |
0 | 885 "init_system_properties_values library_path"); |
886 } | |
887 library_path[0] = '\0'; | |
888 | |
889 // Construct the desired Java library path from the linker's library | |
890 // search path. | |
891 // | |
892 // For compatibility, it is optimal that we insert the additional path | |
893 // components specific to the Java VM after those components specified | |
894 // in LD_LIBRARY_PATH (if any) but before those added by the ld.so | |
895 // infrastructure. | |
896 if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it | |
897 strcpy(library_path, common_path); | |
898 } else { | |
899 int inserted = 0; | |
900 for (i = 0; i < info->dls_cnt; i++, path++) { | |
901 uint_t flags = path->dls_flags & LA_SER_MASK; | |
902 if (((flags & LA_SER_LIBPATH) == 0) && !inserted) { | |
903 strcat(library_path, common_path); | |
904 strcat(library_path, os::path_separator()); | |
905 inserted = 1; | |
906 } | |
907 strcat(library_path, path->dls_name); | |
908 strcat(library_path, os::path_separator()); | |
909 } | |
910 // eliminate trailing path separator | |
911 library_path[strlen(library_path)-1] = '\0'; | |
912 } | |
913 | |
914 // happens before argument parsing - can't use a trace flag | |
915 // tty->print_raw("init_system_properties_values: native lib path: "); | |
916 // tty->print_raw_cr(library_path); | |
917 | |
918 // callee copies into its own buffer | |
919 Arguments::set_library_path(library_path); | |
920 | |
921 free(common_path); | |
922 free(library_path); | |
923 free(info); | |
924 } | |
925 | |
926 /* | |
927 * Extensions directories. | |
928 * | |
929 * Note that the space for the colon and the trailing null are provided | |
930 * by the nulls included by the sizeof operator (so actually one byte more | |
931 * than necessary is allocated). | |
932 */ | |
933 { | |
934 char *buf = (char *) malloc(strlen(Arguments::get_java_home()) + | |
935 sizeof(EXTENSIONS_DIR) + sizeof(COMMON_DIR) + | |
936 sizeof(EXTENSIONS_DIR)); | |
937 sprintf(buf, "%s" EXTENSIONS_DIR ":" COMMON_DIR EXTENSIONS_DIR, | |
938 Arguments::get_java_home()); | |
939 Arguments::set_ext_dirs(buf); | |
940 } | |
941 | |
942 /* Endorsed standards default directory. */ | |
943 { | |
944 char * buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR)); | |
945 sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home()); | |
946 Arguments::set_endorsed_dirs(buf); | |
947 } | |
948 } | |
949 | |
950 #undef malloc | |
951 #undef free | |
952 #undef getenv | |
953 #undef EXTENSIONS_DIR | |
954 #undef ENDORSED_DIR | |
955 #undef COMMON_DIR | |
956 | |
957 } | |
958 | |
959 void os::breakpoint() { | |
960 BREAKPOINT; | |
961 } | |
962 | |
963 bool os::obsolete_option(const JavaVMOption *option) | |
964 { | |
965 if (!strncmp(option->optionString, "-Xt", 3)) { | |
966 return true; | |
967 } else if (!strncmp(option->optionString, "-Xtm", 4)) { | |
968 return true; | |
969 } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) { | |
970 return true; | |
971 } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) { | |
972 return true; | |
973 } | |
974 return false; | |
975 } | |
976 | |
977 bool os::Solaris::valid_stack_address(Thread* thread, address sp) { | |
978 address stackStart = (address)thread->stack_base(); | |
979 address stackEnd = (address)(stackStart - (address)thread->stack_size()); | |
980 if (sp < stackStart && sp >= stackEnd ) return true; | |
981 return false; | |
982 } | |
983 | |
984 extern "C" void breakpoint() { | |
985 // use debugger to set breakpoint here | |
986 } | |
987 | |
988 static thread_t main_thread; | |
989 | |
990 // Thread start routine for all new Java threads | |
991 extern "C" void* java_start(void* thread_addr) { | |
992 // Try to randomize the cache line index of hot stack frames. | |
993 // This helps when threads of the same stack traces evict each other's | |
994 // cache lines. The threads can be either from the same JVM instance, or | |
995 // from different JVM instances. The benefit is especially true for | |
996 // processors with hyperthreading technology. | |
997 static int counter = 0; | |
998 int pid = os::current_process_id(); | |
999 alloca(((pid ^ counter++) & 7) * 128); | |
1000 | |
1001 int prio; | |
1002 Thread* thread = (Thread*)thread_addr; | |
1003 OSThread* osthr = thread->osthread(); | |
1004 | |
1005 osthr->set_lwp_id( _lwp_self() ); // Store lwp in case we are bound | |
1006 thread->_schedctl = (void *) schedctl_init () ; | |
1007 | |
1008 if (UseNUMA) { | |
1009 int lgrp_id = os::numa_get_group_id(); | |
1010 if (lgrp_id != -1) { | |
1011 thread->set_lgrp_id(lgrp_id); | |
1012 } | |
1013 } | |
1014 | |
1015 // If the creator called set priority before we started, | |
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1016 // we need to call set_native_priority now that we have an lwp. |
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1017 // We used to get the priority from thr_getprio (we called |
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1018 // thr_setprio way back in create_thread) and pass it to |
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1019 // set_native_priority, but Solaris scales the priority |
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1020 // in java_to_os_priority, so when we read it back here, |
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1021 // we pass trash to set_native_priority instead of what's |
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1022 // in java_to_os_priority. So we save the native priority |
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1023 // in the osThread and recall it here. |
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1024 |
0 | 1025 if ( osthr->thread_id() != -1 ) { |
1026 if ( UseThreadPriorities ) { | |
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1027 int prio = osthr->native_priority(); |
0 | 1028 if (ThreadPriorityVerbose) { |
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1029 tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " |
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1030 INTPTR_FORMAT ", setting priority: %d\n", |
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1031 osthr->thread_id(), osthr->lwp_id(), prio); |
0 | 1032 } |
1033 os::set_native_priority(thread, prio); | |
1034 } | |
1035 } else if (ThreadPriorityVerbose) { | |
1036 warning("Can't set priority in _start routine, thread id hasn't been set\n"); | |
1037 } | |
1038 | |
1039 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
1040 | |
1041 // initialize signal mask for this thread | |
1042 os::Solaris::hotspot_sigmask(thread); | |
1043 | |
1044 thread->run(); | |
1045 | |
1046 // One less thread is executing | |
1047 // When the VMThread gets here, the main thread may have already exited | |
1048 // which frees the CodeHeap containing the Atomic::dec code | |
1049 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
1050 Atomic::dec(&os::Solaris::_os_thread_count); | |
1051 } | |
1052 | |
1053 if (UseDetachedThreads) { | |
1054 thr_exit(NULL); | |
1055 ShouldNotReachHere(); | |
1056 } | |
1057 return NULL; | |
1058 } | |
1059 | |
1060 static OSThread* create_os_thread(Thread* thread, thread_t thread_id) { | |
1061 // Allocate the OSThread object | |
1062 OSThread* osthread = new OSThread(NULL, NULL); | |
1063 if (osthread == NULL) return NULL; | |
1064 | |
1065 // Store info on the Solaris thread into the OSThread | |
1066 osthread->set_thread_id(thread_id); | |
1067 osthread->set_lwp_id(_lwp_self()); | |
1068 thread->_schedctl = (void *) schedctl_init () ; | |
1069 | |
1070 if (UseNUMA) { | |
1071 int lgrp_id = os::numa_get_group_id(); | |
1072 if (lgrp_id != -1) { | |
1073 thread->set_lgrp_id(lgrp_id); | |
1074 } | |
1075 } | |
1076 | |
1077 if ( ThreadPriorityVerbose ) { | |
1078 tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n", | |
1079 osthread->thread_id(), osthread->lwp_id() ); | |
1080 } | |
1081 | |
1082 // Initial thread state is INITIALIZED, not SUSPENDED | |
1083 osthread->set_state(INITIALIZED); | |
1084 | |
1085 return osthread; | |
1086 } | |
1087 | |
1088 void os::Solaris::hotspot_sigmask(Thread* thread) { | |
1089 | |
1090 //Save caller's signal mask | |
1091 sigset_t sigmask; | |
1092 thr_sigsetmask(SIG_SETMASK, NULL, &sigmask); | |
1093 OSThread *osthread = thread->osthread(); | |
1094 osthread->set_caller_sigmask(sigmask); | |
1095 | |
1096 thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL); | |
1097 if (!ReduceSignalUsage) { | |
1098 if (thread->is_VM_thread()) { | |
1099 // Only the VM thread handles BREAK_SIGNAL ... | |
1100 thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL); | |
1101 } else { | |
1102 // ... all other threads block BREAK_SIGNAL | |
1103 assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked"); | |
1104 thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL); | |
1105 } | |
1106 } | |
1107 } | |
1108 | |
1109 bool os::create_attached_thread(JavaThread* thread) { | |
1110 #ifdef ASSERT | |
1111 thread->verify_not_published(); | |
1112 #endif | |
1113 OSThread* osthread = create_os_thread(thread, thr_self()); | |
1114 if (osthread == NULL) { | |
1115 return false; | |
1116 } | |
1117 | |
1118 // Initial thread state is RUNNABLE | |
1119 osthread->set_state(RUNNABLE); | |
1120 thread->set_osthread(osthread); | |
1121 | |
1122 // initialize signal mask for this thread | |
1123 // and save the caller's signal mask | |
1124 os::Solaris::hotspot_sigmask(thread); | |
1125 | |
1126 return true; | |
1127 } | |
1128 | |
1129 bool os::create_main_thread(JavaThread* thread) { | |
1130 #ifdef ASSERT | |
1131 thread->verify_not_published(); | |
1132 #endif | |
1133 if (_starting_thread == NULL) { | |
1134 _starting_thread = create_os_thread(thread, main_thread); | |
1135 if (_starting_thread == NULL) { | |
1136 return false; | |
1137 } | |
1138 } | |
1139 | |
1140 // The primodial thread is runnable from the start | |
1141 _starting_thread->set_state(RUNNABLE); | |
1142 | |
1143 thread->set_osthread(_starting_thread); | |
1144 | |
1145 // initialize signal mask for this thread | |
1146 // and save the caller's signal mask | |
1147 os::Solaris::hotspot_sigmask(thread); | |
1148 | |
1149 return true; | |
1150 } | |
1151 | |
1152 // _T2_libthread is true if we believe we are running with the newer | |
1153 // SunSoft lwp/libthread.so (2.8 patch, 2.9 default) | |
1154 bool os::Solaris::_T2_libthread = false; | |
1155 | |
1156 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
1157 // Allocate the OSThread object | |
1158 OSThread* osthread = new OSThread(NULL, NULL); | |
1159 if (osthread == NULL) { | |
1160 return false; | |
1161 } | |
1162 | |
1163 if ( ThreadPriorityVerbose ) { | |
1164 char *thrtyp; | |
1165 switch ( thr_type ) { | |
1166 case vm_thread: | |
1167 thrtyp = (char *)"vm"; | |
1168 break; | |
1169 case cgc_thread: | |
1170 thrtyp = (char *)"cgc"; | |
1171 break; | |
1172 case pgc_thread: | |
1173 thrtyp = (char *)"pgc"; | |
1174 break; | |
1175 case java_thread: | |
1176 thrtyp = (char *)"java"; | |
1177 break; | |
1178 case compiler_thread: | |
1179 thrtyp = (char *)"compiler"; | |
1180 break; | |
1181 case watcher_thread: | |
1182 thrtyp = (char *)"watcher"; | |
1183 break; | |
1184 default: | |
1185 thrtyp = (char *)"unknown"; | |
1186 break; | |
1187 } | |
1188 tty->print_cr("In create_thread, creating a %s thread\n", thrtyp); | |
1189 } | |
1190 | |
1191 // Calculate stack size if it's not specified by caller. | |
1192 if (stack_size == 0) { | |
1193 // The default stack size 1M (2M for LP64). | |
1194 stack_size = (BytesPerWord >> 2) * K * K; | |
1195 | |
1196 switch (thr_type) { | |
1197 case os::java_thread: | |
1198 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
1199 if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create(); | |
1200 break; | |
1201 case os::compiler_thread: | |
1202 if (CompilerThreadStackSize > 0) { | |
1203 stack_size = (size_t)(CompilerThreadStackSize * K); | |
1204 break; | |
1205 } // else fall through: | |
1206 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
1207 case os::vm_thread: | |
1208 case os::pgc_thread: | |
1209 case os::cgc_thread: | |
1210 case os::watcher_thread: | |
1211 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
1212 break; | |
1213 } | |
1214 } | |
1215 stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed); | |
1216 | |
1217 // Initial state is ALLOCATED but not INITIALIZED | |
1218 osthread->set_state(ALLOCATED); | |
1219 | |
1220 if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) { | |
1221 // We got lots of threads. Check if we still have some address space left. | |
1222 // Need to be at least 5Mb of unreserved address space. We do check by | |
1223 // trying to reserve some. | |
1224 const size_t VirtualMemoryBangSize = 20*K*K; | |
1225 char* mem = os::reserve_memory(VirtualMemoryBangSize); | |
1226 if (mem == NULL) { | |
1227 delete osthread; | |
1228 return false; | |
1229 } else { | |
1230 // Release the memory again | |
1231 os::release_memory(mem, VirtualMemoryBangSize); | |
1232 } | |
1233 } | |
1234 | |
1235 // Setup osthread because the child thread may need it. | |
1236 thread->set_osthread(osthread); | |
1237 | |
1238 // Create the Solaris thread | |
1239 // explicit THR_BOUND for T2_libthread case in case | |
1240 // that assumption is not accurate, but our alternate signal stack | |
1241 // handling is based on it which must have bound threads | |
1242 thread_t tid = 0; | |
1243 long flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED | |
1244 | ((UseBoundThreads || os::Solaris::T2_libthread() || | |
1245 (thr_type == vm_thread) || | |
1246 (thr_type == cgc_thread) || | |
1247 (thr_type == pgc_thread) || | |
1248 (thr_type == compiler_thread && BackgroundCompilation)) ? | |
1249 THR_BOUND : 0); | |
1250 int status; | |
1251 | |
1252 // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs. | |
1253 // | |
1254 // On multiprocessors systems, libthread sometimes under-provisions our | |
1255 // process with LWPs. On a 30-way systems, for instance, we could have | |
1256 // 50 user-level threads in ready state and only 2 or 3 LWPs assigned | |
1257 // to our process. This can result in under utilization of PEs. | |
1258 // I suspect the problem is related to libthread's LWP | |
1259 // pool management and to the kernel's SIGBLOCKING "last LWP parked" | |
1260 // upcall policy. | |
1261 // | |
1262 // The following code is palliative -- it attempts to ensure that our | |
1263 // process has sufficient LWPs to take advantage of multiple PEs. | |
1264 // Proper long-term cures include using user-level threads bound to LWPs | |
1265 // (THR_BOUND) or using LWP-based synchronization. Note that there is a | |
1266 // slight timing window with respect to sampling _os_thread_count, but | |
1267 // the race is benign. Also, we should periodically recompute | |
1268 // _processors_online as the min of SC_NPROCESSORS_ONLN and the | |
1269 // the number of PEs in our partition. You might be tempted to use | |
1270 // THR_NEW_LWP here, but I'd recommend against it as that could | |
1271 // result in undesirable growth of the libthread's LWP pool. | |
1272 // The fix below isn't sufficient; for instance, it doesn't take into count | |
1273 // LWPs parked on IO. It does, however, help certain CPU-bound benchmarks. | |
1274 // | |
1275 // Some pathologies this scheme doesn't handle: | |
1276 // * Threads can block, releasing the LWPs. The LWPs can age out. | |
1277 // When a large number of threads become ready again there aren't | |
1278 // enough LWPs available to service them. This can occur when the | |
1279 // number of ready threads oscillates. | |
1280 // * LWPs/Threads park on IO, thus taking the LWP out of circulation. | |
1281 // | |
1282 // Finally, we should call thr_setconcurrency() periodically to refresh | |
1283 // the LWP pool and thwart the LWP age-out mechanism. | |
1284 // The "+3" term provides a little slop -- we want to slightly overprovision. | |
1285 | |
1286 if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) { | |
1287 if (!(flags & THR_BOUND)) { | |
1288 thr_setconcurrency (os::Solaris::_os_thread_count); // avoid starvation | |
1289 } | |
1290 } | |
1291 // Although this doesn't hurt, we should warn of undefined behavior | |
1292 // when using unbound T1 threads with schedctl(). This should never | |
1293 // happen, as the compiler and VM threads are always created bound | |
1294 DEBUG_ONLY( | |
1295 if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) && | |
1296 (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) && | |
1297 ((thr_type == vm_thread) || (thr_type == cgc_thread) || | |
1298 (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) { | |
1299 warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound"); | |
1300 } | |
1301 ); | |
1302 | |
1303 | |
1304 // Mark that we don't have an lwp or thread id yet. | |
1305 // In case we attempt to set the priority before the thread starts. | |
1306 osthread->set_lwp_id(-1); | |
1307 osthread->set_thread_id(-1); | |
1308 | |
1309 status = thr_create(NULL, stack_size, java_start, thread, flags, &tid); | |
1310 if (status != 0) { | |
1311 if (PrintMiscellaneous && (Verbose || WizardMode)) { | |
1312 perror("os::create_thread"); | |
1313 } | |
1314 thread->set_osthread(NULL); | |
1315 // Need to clean up stuff we've allocated so far | |
1316 delete osthread; | |
1317 return false; | |
1318 } | |
1319 | |
1320 Atomic::inc(&os::Solaris::_os_thread_count); | |
1321 | |
1322 // Store info on the Solaris thread into the OSThread | |
1323 osthread->set_thread_id(tid); | |
1324 | |
1325 // Remember that we created this thread so we can set priority on it | |
1326 osthread->set_vm_created(); | |
1327 | |
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1328 // Set the default thread priority. If using bound threads, setting |
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1329 // lwp priority will be delayed until thread start. |
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1330 set_native_priority(thread, |
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1331 DefaultThreadPriority == -1 ? |
0 | 1332 java_to_os_priority[NormPriority] : |
1333 DefaultThreadPriority); | |
1334 | |
1335 // Initial thread state is INITIALIZED, not SUSPENDED | |
1336 osthread->set_state(INITIALIZED); | |
1337 | |
1338 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
1339 return true; | |
1340 } | |
1341 | |
1342 /* defined for >= Solaris 10. This allows builds on earlier versions | |
1343 * of Solaris to take advantage of the newly reserved Solaris JVM signals | |
1344 * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2 | |
1345 * and -XX:+UseAltSigs does nothing since these should have no conflict | |
1346 */ | |
1347 #if !defined(SIGJVM1) | |
1348 #define SIGJVM1 39 | |
1349 #define SIGJVM2 40 | |
1350 #endif | |
1351 | |
1352 debug_only(static bool signal_sets_initialized = false); | |
1353 static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; | |
1354 int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL; | |
1355 int os::Solaris::_SIGasync = ASYNC_SIGNAL; | |
1356 | |
1357 bool os::Solaris::is_sig_ignored(int sig) { | |
1358 struct sigaction oact; | |
1359 sigaction(sig, (struct sigaction*)NULL, &oact); | |
1360 void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) | |
1361 : CAST_FROM_FN_PTR(void*, oact.sa_handler); | |
1362 if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) | |
1363 return true; | |
1364 else | |
1365 return false; | |
1366 } | |
1367 | |
1368 // Note: SIGRTMIN is a macro that calls sysconf() so it will | |
1369 // dynamically detect SIGRTMIN value for the system at runtime, not buildtime | |
1370 static bool isJVM1available() { | |
1371 return SIGJVM1 < SIGRTMIN; | |
1372 } | |
1373 | |
1374 void os::Solaris::signal_sets_init() { | |
1375 // Should also have an assertion stating we are still single-threaded. | |
1376 assert(!signal_sets_initialized, "Already initialized"); | |
1377 // Fill in signals that are necessarily unblocked for all threads in | |
1378 // the VM. Currently, we unblock the following signals: | |
1379 // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden | |
1380 // by -Xrs (=ReduceSignalUsage)); | |
1381 // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all | |
1382 // other threads. The "ReduceSignalUsage" boolean tells us not to alter | |
1383 // the dispositions or masks wrt these signals. | |
1384 // Programs embedding the VM that want to use the above signals for their | |
1385 // own purposes must, at this time, use the "-Xrs" option to prevent | |
1386 // interference with shutdown hooks and BREAK_SIGNAL thread dumping. | |
1387 // (See bug 4345157, and other related bugs). | |
1388 // In reality, though, unblocking these signals is really a nop, since | |
1389 // these signals are not blocked by default. | |
1390 sigemptyset(&unblocked_sigs); | |
1391 sigemptyset(&allowdebug_blocked_sigs); | |
1392 sigaddset(&unblocked_sigs, SIGILL); | |
1393 sigaddset(&unblocked_sigs, SIGSEGV); | |
1394 sigaddset(&unblocked_sigs, SIGBUS); | |
1395 sigaddset(&unblocked_sigs, SIGFPE); | |
1396 | |
1397 if (isJVM1available) { | |
1398 os::Solaris::set_SIGinterrupt(SIGJVM1); | |
1399 os::Solaris::set_SIGasync(SIGJVM2); | |
1400 } else if (UseAltSigs) { | |
1401 os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL); | |
1402 os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL); | |
1403 } else { | |
1404 os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL); | |
1405 os::Solaris::set_SIGasync(ASYNC_SIGNAL); | |
1406 } | |
1407 | |
1408 sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt()); | |
1409 sigaddset(&unblocked_sigs, os::Solaris::SIGasync()); | |
1410 | |
1411 if (!ReduceSignalUsage) { | |
1412 if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) { | |
1413 sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); | |
1414 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL); | |
1415 } | |
1416 if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) { | |
1417 sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); | |
1418 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL); | |
1419 } | |
1420 if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) { | |
1421 sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); | |
1422 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL); | |
1423 } | |
1424 } | |
1425 // Fill in signals that are blocked by all but the VM thread. | |
1426 sigemptyset(&vm_sigs); | |
1427 if (!ReduceSignalUsage) | |
1428 sigaddset(&vm_sigs, BREAK_SIGNAL); | |
1429 debug_only(signal_sets_initialized = true); | |
1430 | |
1431 // For diagnostics only used in run_periodic_checks | |
1432 sigemptyset(&check_signal_done); | |
1433 } | |
1434 | |
1435 // These are signals that are unblocked while a thread is running Java. | |
1436 // (For some reason, they get blocked by default.) | |
1437 sigset_t* os::Solaris::unblocked_signals() { | |
1438 assert(signal_sets_initialized, "Not initialized"); | |
1439 return &unblocked_sigs; | |
1440 } | |
1441 | |
1442 // These are the signals that are blocked while a (non-VM) thread is | |
1443 // running Java. Only the VM thread handles these signals. | |
1444 sigset_t* os::Solaris::vm_signals() { | |
1445 assert(signal_sets_initialized, "Not initialized"); | |
1446 return &vm_sigs; | |
1447 } | |
1448 | |
1449 // These are signals that are blocked during cond_wait to allow debugger in | |
1450 sigset_t* os::Solaris::allowdebug_blocked_signals() { | |
1451 assert(signal_sets_initialized, "Not initialized"); | |
1452 return &allowdebug_blocked_sigs; | |
1453 } | |
1454 | |
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1455 |
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1456 void _handle_uncaught_cxx_exception() { |
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1457 VMError err("An uncaught C++ exception"); |
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1458 err.report_and_die(); |
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1459 } |
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1460 |
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1461 |
0 | 1462 // First crack at OS-specific initialization, from inside the new thread. |
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1463 void os::initialize_thread(Thread* thr) { |
0 | 1464 int r = thr_main() ; |
1465 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; | |
1466 if (r) { | |
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1467 JavaThread* jt = (JavaThread *)thr; |
0 | 1468 assert(jt != NULL,"Sanity check"); |
1469 size_t stack_size; | |
1470 address base = jt->stack_base(); | |
1471 if (Arguments::created_by_java_launcher()) { | |
1472 // Use 2MB to allow for Solaris 7 64 bit mode. | |
1473 stack_size = JavaThread::stack_size_at_create() == 0 | |
1474 ? 2048*K : JavaThread::stack_size_at_create(); | |
1475 | |
1476 // There are rare cases when we may have already used more than | |
1477 // the basic stack size allotment before this method is invoked. | |
1478 // Attempt to allow for a normally sized java_stack. | |
1479 size_t current_stack_offset = (size_t)(base - (address)&stack_size); | |
1480 stack_size += ReservedSpace::page_align_size_down(current_stack_offset); | |
1481 } else { | |
1482 // 6269555: If we were not created by a Java launcher, i.e. if we are | |
1483 // running embedded in a native application, treat the primordial thread | |
1484 // as much like a native attached thread as possible. This means using | |
1485 // the current stack size from thr_stksegment(), unless it is too large | |
1486 // to reliably setup guard pages. A reasonable max size is 8MB. | |
1487 size_t current_size = current_stack_size(); | |
1488 // This should never happen, but just in case.... | |
1489 if (current_size == 0) current_size = 2 * K * K; | |
1490 stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size; | |
1491 } | |
1492 address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());; | |
1493 stack_size = (size_t)(base - bottom); | |
1494 | |
1495 assert(stack_size > 0, "Stack size calculation problem"); | |
1496 | |
1497 if (stack_size > jt->stack_size()) { | |
1498 NOT_PRODUCT( | |
1499 struct rlimit limits; | |
1500 getrlimit(RLIMIT_STACK, &limits); | |
1501 size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur); | |
1502 assert(size >= jt->stack_size(), "Stack size problem in main thread"); | |
1503 ) | |
1504 tty->print_cr( | |
1505 "Stack size of %d Kb exceeds current limit of %d Kb.\n" | |
1506 "(Stack sizes are rounded up to a multiple of the system page size.)\n" | |
1507 "See limit(1) to increase the stack size limit.", | |
1508 stack_size / K, jt->stack_size() / K); | |
1509 vm_exit(1); | |
1510 } | |
1511 assert(jt->stack_size() >= stack_size, | |
1512 "Attempt to map more stack than was allocated"); | |
1513 jt->set_stack_size(stack_size); | |
1514 } | |
1515 | |
1516 // 5/22/01: Right now alternate signal stacks do not handle | |
1517 // throwing stack overflow exceptions, see bug 4463178 | |
1518 // Until a fix is found for this, T2 will NOT imply alternate signal | |
1519 // stacks. | |
1520 // If using T2 libthread threads, install an alternate signal stack. | |
1521 // Because alternate stacks associate with LWPs on Solaris, | |
1522 // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads | |
1523 // we prefer to explicitly stack bang. | |
1524 // If not using T2 libthread, but using UseBoundThreads any threads | |
1525 // (primordial thread, jni_attachCurrentThread) we do not create, | |
1526 // probably are not bound, therefore they can not have an alternate | |
1527 // signal stack. Since our stack banging code is generated and | |
1528 // is shared across threads, all threads must be bound to allow | |
1529 // using alternate signal stacks. The alternative is to interpose | |
1530 // on _lwp_create to associate an alt sig stack with each LWP, | |
1531 // and this could be a problem when the JVM is embedded. | |
1532 // We would prefer to use alternate signal stacks with T2 | |
1533 // Since there is currently no accurate way to detect T2 | |
1534 // we do not. Assuming T2 when running T1 causes sig 11s or assertions | |
1535 // on installing alternate signal stacks | |
1536 | |
1537 | |
1538 // 05/09/03: removed alternate signal stack support for Solaris | |
1539 // The alternate signal stack mechanism is no longer needed to | |
1540 // handle stack overflow. This is now handled by allocating | |
1541 // guard pages (red zone) and stackbanging. | |
1542 // Initially the alternate signal stack mechanism was removed because | |
1543 // it did not work with T1 llibthread. Alternate | |
1544 // signal stacks MUST have all threads bound to lwps. Applications | |
1545 // can create their own threads and attach them without their being | |
1546 // bound under T1. This is frequently the case for the primordial thread. | |
1547 // If we were ever to reenable this mechanism we would need to | |
1548 // use the dynamic check for T2 libthread. | |
1549 | |
1550 os::Solaris::init_thread_fpu_state(); | |
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1551 std::set_terminate(_handle_uncaught_cxx_exception); |
0 | 1552 } |
1553 | |
1554 | |
1555 | |
1556 // Free Solaris resources related to the OSThread | |
1557 void os::free_thread(OSThread* osthread) { | |
1558 assert(osthread != NULL, "os::free_thread but osthread not set"); | |
1559 | |
1560 | |
1561 // We are told to free resources of the argument thread, | |
1562 // but we can only really operate on the current thread. | |
1563 // The main thread must take the VMThread down synchronously | |
1564 // before the main thread exits and frees up CodeHeap | |
1565 guarantee((Thread::current()->osthread() == osthread | |
1566 || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread"); | |
1567 if (Thread::current()->osthread() == osthread) { | |
1568 // Restore caller's signal mask | |
1569 sigset_t sigmask = osthread->caller_sigmask(); | |
1570 thr_sigsetmask(SIG_SETMASK, &sigmask, NULL); | |
1571 } | |
1572 delete osthread; | |
1573 } | |
1574 | |
1575 void os::pd_start_thread(Thread* thread) { | |
1576 int status = thr_continue(thread->osthread()->thread_id()); | |
1577 assert_status(status == 0, status, "thr_continue failed"); | |
1578 } | |
1579 | |
1580 | |
1581 intx os::current_thread_id() { | |
1582 return (intx)thr_self(); | |
1583 } | |
1584 | |
1585 static pid_t _initial_pid = 0; | |
1586 | |
1587 int os::current_process_id() { | |
1588 return (int)(_initial_pid ? _initial_pid : getpid()); | |
1589 } | |
1590 | |
1591 int os::allocate_thread_local_storage() { | |
1592 // %%% in Win32 this allocates a memory segment pointed to by a | |
1593 // register. Dan Stein can implement a similar feature in | |
1594 // Solaris. Alternatively, the VM can do the same thing | |
1595 // explicitly: malloc some storage and keep the pointer in a | |
1596 // register (which is part of the thread's context) (or keep it | |
1597 // in TLS). | |
1598 // %%% In current versions of Solaris, thr_self and TSD can | |
1599 // be accessed via short sequences of displaced indirections. | |
1600 // The value of thr_self is available as %g7(36). | |
1601 // The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4), | |
1602 // assuming that the current thread already has a value bound to k. | |
1603 // It may be worth experimenting with such access patterns, | |
1604 // and later having the parameters formally exported from a Solaris | |
1605 // interface. I think, however, that it will be faster to | |
1606 // maintain the invariant that %g2 always contains the | |
1607 // JavaThread in Java code, and have stubs simply | |
1608 // treat %g2 as a caller-save register, preserving it in a %lN. | |
1609 thread_key_t tk; | |
1610 if (thr_keycreate( &tk, NULL ) ) | |
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1611 fatal(err_msg("os::allocate_thread_local_storage: thr_keycreate failed " |
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1612 "(%s)", strerror(errno))); |
0 | 1613 return int(tk); |
1614 } | |
1615 | |
1616 void os::free_thread_local_storage(int index) { | |
1617 // %%% don't think we need anything here | |
1618 // if ( pthread_key_delete((pthread_key_t) tk) ) | |
1619 // fatal("os::free_thread_local_storage: pthread_key_delete failed"); | |
1620 } | |
1621 | |
1622 #define SMALLINT 32 // libthread allocate for tsd_common is a version specific | |
1623 // small number - point is NO swap space available | |
1624 void os::thread_local_storage_at_put(int index, void* value) { | |
1625 // %%% this is used only in threadLocalStorage.cpp | |
1626 if (thr_setspecific((thread_key_t)index, value)) { | |
1627 if (errno == ENOMEM) { | |
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1628 vm_exit_out_of_memory(SMALLINT, OOM_MALLOC_ERROR, |
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1629 "thr_setspecific: out of swap space"); |
0 | 1630 } else { |
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1631 fatal(err_msg("os::thread_local_storage_at_put: thr_setspecific failed " |
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1632 "(%s)", strerror(errno))); |
0 | 1633 } |
1634 } else { | |
1635 ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ; | |
1636 } | |
1637 } | |
1638 | |
1639 // This function could be called before TLS is initialized, for example, when | |
1640 // VM receives an async signal or when VM causes a fatal error during | |
1641 // initialization. Return NULL if thr_getspecific() fails. | |
1642 void* os::thread_local_storage_at(int index) { | |
1643 // %%% this is used only in threadLocalStorage.cpp | |
1644 void* r = NULL; | |
1645 return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r; | |
1646 } | |
1647 | |
1648 | |
1649 // gethrtime can move backwards if read from one cpu and then a different cpu | |
1650 // getTimeNanos is guaranteed to not move backward on Solaris | |
1651 // local spinloop created as faster for a CAS on an int than | |
1652 // a CAS on a 64bit jlong. Also Atomic::cmpxchg for jlong is not | |
1653 // supported on sparc v8 or pre supports_cx8 intel boxes. | |
1654 // oldgetTimeNanos for systems which do not support CAS on 64bit jlong | |
1655 // i.e. sparc v8 and pre supports_cx8 (i486) intel boxes | |
1656 inline hrtime_t oldgetTimeNanos() { | |
1657 int gotlock = LOCK_INVALID; | |
1658 hrtime_t newtime = gethrtime(); | |
1659 | |
1660 for (;;) { | |
1661 // grab lock for max_hrtime | |
1662 int curlock = max_hrtime_lock; | |
1663 if (curlock & LOCK_BUSY) continue; | |
1664 if (gotlock = Atomic::cmpxchg(LOCK_BUSY, &max_hrtime_lock, LOCK_FREE) != LOCK_FREE) continue; | |
1665 if (newtime > max_hrtime) { | |
1666 max_hrtime = newtime; | |
1667 } else { | |
1668 newtime = max_hrtime; | |
1669 } | |
1670 // release lock | |
1671 max_hrtime_lock = LOCK_FREE; | |
1672 return newtime; | |
1673 } | |
1674 } | |
1675 // gethrtime can move backwards if read from one cpu and then a different cpu | |
1676 // getTimeNanos is guaranteed to not move backward on Solaris | |
1677 inline hrtime_t getTimeNanos() { | |
1678 if (VM_Version::supports_cx8()) { | |
499 | 1679 const hrtime_t now = gethrtime(); |
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1680 // Use atomic long load since 32-bit x86 uses 2 registers to keep long. |
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1681 const hrtime_t prev = Atomic::load((volatile jlong*)&max_hrtime); |
499 | 1682 if (now <= prev) return prev; // same or retrograde time; |
1683 const hrtime_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&max_hrtime, prev); | |
1684 assert(obsv >= prev, "invariant"); // Monotonicity | |
1685 // If the CAS succeeded then we're done and return "now". | |
1686 // If the CAS failed and the observed value "obs" is >= now then | |
1687 // we should return "obs". If the CAS failed and now > obs > prv then | |
1688 // some other thread raced this thread and installed a new value, in which case | |
1689 // we could either (a) retry the entire operation, (b) retry trying to install now | |
1690 // or (c) just return obs. We use (c). No loop is required although in some cases | |
1691 // we might discard a higher "now" value in deference to a slightly lower but freshly | |
1692 // installed obs value. That's entirely benign -- it admits no new orderings compared | |
1693 // to (a) or (b) -- and greatly reduces coherence traffic. | |
1694 // We might also condition (c) on the magnitude of the delta between obs and now. | |
1695 // Avoiding excessive CAS operations to hot RW locations is critical. | |
1696 // See http://blogs.sun.com/dave/entry/cas_and_cache_trivia_invalidate | |
1697 return (prev == obsv) ? now : obsv ; | |
0 | 1698 } else { |
1699 return oldgetTimeNanos(); | |
1700 } | |
1701 } | |
1702 | |
1703 // Time since start-up in seconds to a fine granularity. | |
1704 // Used by VMSelfDestructTimer and the MemProfiler. | |
1705 double os::elapsedTime() { | |
1706 return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz; | |
1707 } | |
1708 | |
1709 jlong os::elapsed_counter() { | |
1710 return (jlong)(getTimeNanos() - first_hrtime); | |
1711 } | |
1712 | |
1713 jlong os::elapsed_frequency() { | |
1714 return hrtime_hz; | |
1715 } | |
1716 | |
1717 // Return the real, user, and system times in seconds from an | |
1718 // arbitrary fixed point in the past. | |
1719 bool os::getTimesSecs(double* process_real_time, | |
1720 double* process_user_time, | |
1721 double* process_system_time) { | |
1722 struct tms ticks; | |
1723 clock_t real_ticks = times(&ticks); | |
1724 | |
1725 if (real_ticks == (clock_t) (-1)) { | |
1726 return false; | |
1727 } else { | |
1728 double ticks_per_second = (double) clock_tics_per_sec; | |
1729 *process_user_time = ((double) ticks.tms_utime) / ticks_per_second; | |
1730 *process_system_time = ((double) ticks.tms_stime) / ticks_per_second; | |
1731 // For consistency return the real time from getTimeNanos() | |
1732 // converted to seconds. | |
1733 *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS); | |
1734 | |
1735 return true; | |
1736 } | |
1737 } | |
1738 | |
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1739 bool os::supports_vtime() { return true; } |
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1740 |
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1741 bool os::enable_vtime() { |
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1742 int fd = ::open("/proc/self/ctl", O_WRONLY); |
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1743 if (fd == -1) |
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1744 return false; |
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1745 |
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1746 long cmd[] = { PCSET, PR_MSACCT }; |
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1747 int res = ::write(fd, cmd, sizeof(long) * 2); |
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1748 ::close(fd); |
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1749 if (res != sizeof(long) * 2) |
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1750 return false; |
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1751 |
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1752 return true; |
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1753 } |
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1754 |
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1755 bool os::vtime_enabled() { |
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1756 int fd = ::open("/proc/self/status", O_RDONLY); |
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1757 if (fd == -1) |
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1758 return false; |
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1759 |
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1760 pstatus_t status; |
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1761 int res = os::read(fd, (void*) &status, sizeof(pstatus_t)); |
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1762 ::close(fd); |
342
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1763 if (res != sizeof(pstatus_t)) |
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1764 return false; |
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1765 |
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1766 return status.pr_flags & PR_MSACCT; |
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|
1767 } |
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|
1768 |
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1769 double os::elapsedVTime() { |
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1770 return (double)gethrvtime() / (double)hrtime_hz; |
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1771 } |
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1772 |
0 | 1773 // Used internally for comparisons only |
1774 // getTimeMillis guaranteed to not move backwards on Solaris | |
1775 jlong getTimeMillis() { | |
1776 jlong nanotime = getTimeNanos(); | |
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1777 return (jlong)(nanotime / NANOSECS_PER_MILLISEC); |
0 | 1778 } |
1779 | |
61 | 1780 // Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis |
1781 jlong os::javaTimeMillis() { | |
0 | 1782 timeval t; |
1783 if (gettimeofday( &t, NULL) == -1) | |
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1784 fatal(err_msg("os::javaTimeMillis: gettimeofday (%s)", strerror(errno))); |
0 | 1785 return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000; |
1786 } | |
1787 | |
1788 jlong os::javaTimeNanos() { | |
1789 return (jlong)getTimeNanos(); | |
1790 } | |
1791 | |
1792 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
1793 info_ptr->max_value = ALL_64_BITS; // gethrtime() uses all 64 bits | |
1794 info_ptr->may_skip_backward = false; // not subject to resetting or drifting | |
1795 info_ptr->may_skip_forward = false; // not subject to resetting or drifting | |
1796 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
1797 } | |
1798 | |
1799 char * os::local_time_string(char *buf, size_t buflen) { | |
1800 struct tm t; | |
1801 time_t long_time; | |
1802 time(&long_time); | |
1803 localtime_r(&long_time, &t); | |
1804 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
1805 t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, | |
1806 t.tm_hour, t.tm_min, t.tm_sec); | |
1807 return buf; | |
1808 } | |
1809 | |
1810 // Note: os::shutdown() might be called very early during initialization, or | |
1811 // called from signal handler. Before adding something to os::shutdown(), make | |
1812 // sure it is async-safe and can handle partially initialized VM. | |
1813 void os::shutdown() { | |
1814 | |
1815 // allow PerfMemory to attempt cleanup of any persistent resources | |
1816 perfMemory_exit(); | |
1817 | |
1818 // needs to remove object in file system | |
1819 AttachListener::abort(); | |
1820 | |
1821 // flush buffered output, finish log files | |
1822 ostream_abort(); | |
1823 | |
1824 // Check for abort hook | |
1825 abort_hook_t abort_hook = Arguments::abort_hook(); | |
1826 if (abort_hook != NULL) { | |
1827 abort_hook(); | |
1828 } | |
1829 } | |
1830 | |
1831 // Note: os::abort() might be called very early during initialization, or | |
1832 // called from signal handler. Before adding something to os::abort(), make | |
1833 // sure it is async-safe and can handle partially initialized VM. | |
1834 void os::abort(bool dump_core) { | |
1835 os::shutdown(); | |
1836 if (dump_core) { | |
1837 #ifndef PRODUCT | |
1838 fdStream out(defaultStream::output_fd()); | |
1839 out.print_raw("Current thread is "); | |
1840 char buf[16]; | |
1841 jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); | |
1842 out.print_raw_cr(buf); | |
1843 out.print_raw_cr("Dumping core ..."); | |
1844 #endif | |
1845 ::abort(); // dump core (for debugging) | |
1846 } | |
1847 | |
1848 ::exit(1); | |
1849 } | |
1850 | |
1851 // Die immediately, no exit hook, no abort hook, no cleanup. | |
1852 void os::die() { | |
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1853 ::abort(); // dump core (for debugging) |
0 | 1854 } |
1855 | |
1856 // unused | |
1857 void os::set_error_file(const char *logfile) {} | |
1858 | |
1859 // DLL functions | |
1860 | |
1861 const char* os::dll_file_extension() { return ".so"; } | |
1862 | |
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1863 // This must be hard coded because it's the system's temporary |
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1864 // directory not the java application's temp directory, ala java.io.tmpdir. |
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1865 const char* os::get_temp_directory() { return "/tmp"; } |
0 | 1866 |
691 | 1867 static bool file_exists(const char* filename) { |
1868 struct stat statbuf; | |
1869 if (filename == NULL || strlen(filename) == 0) { | |
1870 return false; | |
1871 } | |
1872 return os::stat(filename, &statbuf) == 0; | |
1873 } | |
1874 | |
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1875 bool os::dll_build_name(char* buffer, size_t buflen, |
691 | 1876 const char* pname, const char* fname) { |
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1877 bool retval = false; |
242 | 1878 const size_t pnamelen = pname ? strlen(pname) : 0; |
1879 | |
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1880 // Return error on buffer overflow. |
242 | 1881 if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { |
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1882 return retval; |
242 | 1883 } |
1884 | |
1885 if (pnamelen == 0) { | |
691 | 1886 snprintf(buffer, buflen, "lib%s.so", fname); |
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1887 retval = true; |
691 | 1888 } else if (strchr(pname, *os::path_separator()) != NULL) { |
1889 int n; | |
1890 char** pelements = split_path(pname, &n); | |
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1891 if (pelements == NULL) { |
9062 | 1892 return false; |
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1893 } |
691 | 1894 for (int i = 0 ; i < n ; i++) { |
1895 // really shouldn't be NULL but what the heck, check can't hurt | |
1896 if (pelements[i] == NULL || strlen(pelements[i]) == 0) { | |
1897 continue; // skip the empty path values | |
1898 } | |
1899 snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname); | |
1900 if (file_exists(buffer)) { | |
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1901 retval = true; |
691 | 1902 break; |
1903 } | |
1904 } | |
1905 // release the storage | |
1906 for (int i = 0 ; i < n ; i++) { | |
1907 if (pelements[i] != NULL) { | |
6197 | 1908 FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); |
691 | 1909 } |
1910 } | |
1911 if (pelements != NULL) { | |
6197 | 1912 FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); |
691 | 1913 } |
242 | 1914 } else { |
691 | 1915 snprintf(buffer, buflen, "%s/lib%s.so", pname, fname); |
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1916 retval = true; |
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1917 } |
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1918 return retval; |
242 | 1919 } |
1920 | |
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1921 // check if addr is inside libjvm.so |
0 | 1922 bool os::address_is_in_vm(address addr) { |
1923 static address libjvm_base_addr; | |
1924 Dl_info dlinfo; | |
1925 | |
1926 if (libjvm_base_addr == NULL) { | |
1927 dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo); | |
1928 libjvm_base_addr = (address)dlinfo.dli_fbase; | |
1929 assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); | |
1930 } | |
1931 | |
1932 if (dladdr((void *)addr, &dlinfo)) { | |
1933 if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; | |
1934 } | |
1935 | |
1936 return false; | |
1937 } | |
1938 | |
1939 typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int); | |
1940 static dladdr1_func_type dladdr1_func = NULL; | |
1941 | |
1942 bool os::dll_address_to_function_name(address addr, char *buf, | |
1943 int buflen, int * offset) { | |
1944 Dl_info dlinfo; | |
1945 | |
1946 // dladdr1_func was initialized in os::init() | |
1947 if (dladdr1_func){ | |
1948 // yes, we have dladdr1 | |
1949 | |
1950 // Support for dladdr1 is checked at runtime; it may be | |
1951 // available even if the vm is built on a machine that does | |
1952 // not have dladdr1 support. Make sure there is a value for | |
1953 // RTLD_DL_SYMENT. | |
1954 #ifndef RTLD_DL_SYMENT | |
1955 #define RTLD_DL_SYMENT 1 | |
1956 #endif | |
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1957 #ifdef _LP64 |
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1958 Elf64_Sym * info; |
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1959 #else |
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1960 Elf32_Sym * info; |
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1961 #endif |
0 | 1962 if (dladdr1_func((void *)addr, &dlinfo, (void **)&info, |
1963 RTLD_DL_SYMENT)) { | |
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1964 if ((char *)dlinfo.dli_saddr + info->st_size > (char *)addr) { |
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1965 if (buf != NULL) { |
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1966 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) |
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1967 jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); |
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1968 } |
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1969 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
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1970 return true; |
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1971 } |
0 | 1972 } |
2022
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1973 if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) { |
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1974 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
4803 | 1975 buf, buflen, offset, dlinfo.dli_fname)) { |
2022
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1976 return true; |
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1977 } |
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1978 } |
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1979 if (buf != NULL) buf[0] = '\0'; |
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1980 if (offset != NULL) *offset = -1; |
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1981 return false; |
0 | 1982 } else { |
1983 // no, only dladdr is available | |
2022
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1984 if (dladdr((void *)addr, &dlinfo)) { |
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1985 if (buf != NULL) { |
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1986 if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) |
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1987 jio_snprintf(buf, buflen, dlinfo.dli_sname); |
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1988 } |
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1989 if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; |
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1990 return true; |
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1991 } else if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != 0) { |
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1992 if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), |
4803 | 1993 buf, buflen, offset, dlinfo.dli_fname)) { |
0 | 1994 return true; |
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1995 } |
0 | 1996 } |
2022
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1997 if (buf != NULL) buf[0] = '\0'; |
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1998 if (offset != NULL) *offset = -1; |
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1999 return false; |
0 | 2000 } |
2001 } | |
2002 | |
2003 bool os::dll_address_to_library_name(address addr, char* buf, | |
2004 int buflen, int* offset) { | |
2005 Dl_info dlinfo; | |
2006 | |
2007 if (dladdr((void*)addr, &dlinfo)){ | |
2008 if (buf) jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); | |
2009 if (offset) *offset = addr - (address)dlinfo.dli_fbase; | |
2010 return true; | |
2011 } else { | |
2012 if (buf) buf[0] = '\0'; | |
2013 if (offset) *offset = -1; | |
2014 return false; | |
2015 } | |
2016 } | |
2017 | |
2018 // Prints the names and full paths of all opened dynamic libraries | |
2019 // for current process | |
2020 void os::print_dll_info(outputStream * st) { | |
2021 Dl_info dli; | |
2022 void *handle; | |
2023 Link_map *map; | |
2024 Link_map *p; | |
2025 | |
2026 st->print_cr("Dynamic libraries:"); st->flush(); | |
2027 | |
2028 if (!dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli)) { | |
2029 st->print_cr("Error: Cannot print dynamic libraries."); | |
2030 return; | |
2031 } | |
2032 handle = dlopen(dli.dli_fname, RTLD_LAZY); | |
2033 if (handle == NULL) { | |
2034 st->print_cr("Error: Cannot print dynamic libraries."); | |
2035 return; | |
2036 } | |
2037 dlinfo(handle, RTLD_DI_LINKMAP, &map); | |
2038 if (map == NULL) { | |
2039 st->print_cr("Error: Cannot print dynamic libraries."); | |
2040 return; | |
2041 } | |
2042 | |
2043 while (map->l_prev != NULL) | |
2044 map = map->l_prev; | |
2045 | |
2046 while (map != NULL) { | |
2047 st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name); | |
2048 map = map->l_next; | |
2049 } | |
2050 | |
2051 dlclose(handle); | |
2052 } | |
2053 | |
2054 // Loads .dll/.so and | |
2055 // in case of error it checks if .dll/.so was built for the | |
2056 // same architecture as Hotspot is running on | |
2057 | |
2058 void * os::dll_load(const char *filename, char *ebuf, int ebuflen) | |
2059 { | |
2060 void * result= ::dlopen(filename, RTLD_LAZY); | |
2061 if (result != NULL) { | |
2062 // Successful loading | |
2063 return result; | |
2064 } | |
2065 | |
2066 Elf32_Ehdr elf_head; | |
2067 | |
2068 // Read system error message into ebuf | |
2069 // It may or may not be overwritten below | |
2070 ::strncpy(ebuf, ::dlerror(), ebuflen-1); | |
2071 ebuf[ebuflen-1]='\0'; | |
2072 int diag_msg_max_length=ebuflen-strlen(ebuf); | |
2073 char* diag_msg_buf=ebuf+strlen(ebuf); | |
2074 | |
2075 if (diag_msg_max_length==0) { | |
2076 // No more space in ebuf for additional diagnostics message | |
2077 return NULL; | |
2078 } | |
2079 | |
2080 | |
2081 int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); | |
2082 | |
2083 if (file_descriptor < 0) { | |
2084 // Can't open library, report dlerror() message | |
2085 return NULL; | |
2086 } | |
2087 | |
2088 bool failed_to_read_elf_head= | |
2089 (sizeof(elf_head)!= | |
2090 (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ; | |
2091 | |
2092 ::close(file_descriptor); | |
2093 if (failed_to_read_elf_head) { | |
2094 // file i/o error - report dlerror() msg | |
2095 return NULL; | |
2096 } | |
2097 | |
2098 typedef struct { | |
2099 Elf32_Half code; // Actual value as defined in elf.h | |
2100 Elf32_Half compat_class; // Compatibility of archs at VM's sense | |
2101 char elf_class; // 32 or 64 bit | |
2102 char endianess; // MSB or LSB | |
2103 char* name; // String representation | |
2104 } arch_t; | |
2105 | |
2106 static const arch_t arch_array[]={ | |
2107 {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
2108 {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, | |
2109 {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, | |
2110 {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, | |
2111 {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
2112 {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, | |
2113 {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, | |
2114 {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, | |
1681
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2115 {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}, |
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2116 {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM 32"} |
0 | 2117 }; |
2118 | |
2119 #if (defined IA32) | |
2120 static Elf32_Half running_arch_code=EM_386; | |
2121 #elif (defined AMD64) | |
2122 static Elf32_Half running_arch_code=EM_X86_64; | |
2123 #elif (defined IA64) | |
2124 static Elf32_Half running_arch_code=EM_IA_64; | |
2125 #elif (defined __sparc) && (defined _LP64) | |
2126 static Elf32_Half running_arch_code=EM_SPARCV9; | |
2127 #elif (defined __sparc) && (!defined _LP64) | |
2128 static Elf32_Half running_arch_code=EM_SPARC; | |
2129 #elif (defined __powerpc64__) | |
2130 static Elf32_Half running_arch_code=EM_PPC64; | |
2131 #elif (defined __powerpc__) | |
2132 static Elf32_Half running_arch_code=EM_PPC; | |
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2133 #elif (defined ARM) |
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2134 static Elf32_Half running_arch_code=EM_ARM; |
0 | 2135 #else |
2136 #error Method os::dll_load requires that one of following is defined:\ | |
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2137 IA32, AMD64, IA64, __sparc, __powerpc__, ARM, ARM |
0 | 2138 #endif |
2139 | |
2140 // Identify compatability class for VM's architecture and library's architecture | |
2141 // Obtain string descriptions for architectures | |
2142 | |
2143 arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; | |
2144 int running_arch_index=-1; | |
2145 | |
2146 for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) { | |
2147 if (running_arch_code == arch_array[i].code) { | |
2148 running_arch_index = i; | |
2149 } | |
2150 if (lib_arch.code == arch_array[i].code) { | |
2151 lib_arch.compat_class = arch_array[i].compat_class; | |
2152 lib_arch.name = arch_array[i].name; | |
2153 } | |
2154 } | |
2155 | |
2156 assert(running_arch_index != -1, | |
2157 "Didn't find running architecture code (running_arch_code) in arch_array"); | |
2158 if (running_arch_index == -1) { | |
2159 // Even though running architecture detection failed | |
2160 // we may still continue with reporting dlerror() message | |
2161 return NULL; | |
2162 } | |
2163 | |
2164 if (lib_arch.endianess != arch_array[running_arch_index].endianess) { | |
2165 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); | |
2166 return NULL; | |
2167 } | |
2168 | |
2169 if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { | |
2170 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); | |
2171 return NULL; | |
2172 } | |
2173 | |
2174 if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { | |
2175 if ( lib_arch.name!=NULL ) { | |
2176 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2177 " (Possible cause: can't load %s-bit .so on a %s-bit platform)", | |
2178 lib_arch.name, arch_array[running_arch_index].name); | |
2179 } else { | |
2180 ::snprintf(diag_msg_buf, diag_msg_max_length-1, | |
2181 " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", | |
2182 lib_arch.code, | |
2183 arch_array[running_arch_index].name); | |
2184 } | |
2185 } | |
2186 | |
2187 return NULL; | |
2188 } | |
2189 | |
242 | 2190 void* os::dll_lookup(void* handle, const char* name) { |
2191 return dlsym(handle, name); | |
2192 } | |
0 | 2193 |
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2194 int os::stat(const char *path, struct stat *sbuf) { |
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2195 char pathbuf[MAX_PATH]; |
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2196 if (strlen(path) > MAX_PATH - 1) { |
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2197 errno = ENAMETOOLONG; |
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2198 return -1; |
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2199 } |
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2200 os::native_path(strcpy(pathbuf, path)); |
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2201 return ::stat(pathbuf, sbuf); |
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2202 } |
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2203 |
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2204 static bool _print_ascii_file(const char* filename, outputStream* st) { |
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2205 int fd = ::open(filename, O_RDONLY); |
0 | 2206 if (fd == -1) { |
2207 return false; | |
2208 } | |
2209 | |
2210 char buf[32]; | |
2211 int bytes; | |
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2212 while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) { |
0 | 2213 st->print_raw(buf, bytes); |
2214 } | |
2215 | |
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2216 ::close(fd); |
0 | 2217 |
2218 return true; | |
2219 } | |
2220 | |
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2221 void os::print_os_info_brief(outputStream* st) { |
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2222 os::Solaris::print_distro_info(st); |
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2223 |
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2224 os::Posix::print_uname_info(st); |
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2225 |
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2226 os::Solaris::print_libversion_info(st); |
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2227 } |
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2228 |
0 | 2229 void os::print_os_info(outputStream* st) { |
2230 st->print("OS:"); | |
2231 | |
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2232 os::Solaris::print_distro_info(st); |
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2233 |
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2234 os::Posix::print_uname_info(st); |
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2235 |
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2236 os::Solaris::print_libversion_info(st); |
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2237 |
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2238 os::Posix::print_rlimit_info(st); |
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|
2239 |
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2240 os::Posix::print_load_average(st); |
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|
2241 } |
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2242 |
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2243 void os::Solaris::print_distro_info(outputStream* st) { |
0 | 2244 if (!_print_ascii_file("/etc/release", st)) { |
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2245 st->print("Solaris"); |
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|
2246 } |
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|
2247 st->cr(); |
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|
2248 } |
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|
2249 |
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2250 void os::Solaris::print_libversion_info(outputStream* st) { |
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2251 if (os::Solaris::T2_libthread()) { |
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|
2252 st->print(" (T2 libthread)"); |
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|
2253 } |
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|
2254 else { |
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2255 st->print(" (T1 libthread)"); |
0 | 2256 } |
2257 st->cr(); | |
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2258 } |
0 | 2259 |
2260 static bool check_addr0(outputStream* st) { | |
2261 jboolean status = false; | |
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|
2262 int fd = ::open("/proc/self/map",O_RDONLY); |
0 | 2263 if (fd >= 0) { |
2264 prmap_t p; | |
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2265 while(::read(fd, &p, sizeof(p)) > 0) { |
0 | 2266 if (p.pr_vaddr == 0x0) { |
2267 st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname); | |
2268 st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname); | |
2269 st->print("Access:"); | |
2270 st->print("%s",(p.pr_mflags & MA_READ) ? "r" : "-"); | |
2271 st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-"); | |
2272 st->print("%s",(p.pr_mflags & MA_EXEC) ? "x" : "-"); | |
2273 st->cr(); | |
2274 status = true; | |
2275 } | |
1980
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|
2276 ::close(fd); |
0 | 2277 } |
2278 } | |
2279 return status; | |
2280 } | |
2281 | |
3800
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|
2282 void os::pd_print_cpu_info(outputStream* st) { |
bf6481e5f96d
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|
2283 // Nothing to do for now. |
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|
2284 } |
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|
2285 |
0 | 2286 void os::print_memory_info(outputStream* st) { |
2287 st->print("Memory:"); | |
2288 st->print(" %dk page", os::vm_page_size()>>10); | |
2289 st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10); | |
2290 st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10); | |
2291 st->cr(); | |
2292 (void) check_addr0(st); | |
2293 } | |
2294 | |
2295 // Taken from /usr/include/sys/machsig.h Supposed to be architecture specific | |
2296 // but they're the same for all the solaris architectures that we support. | |
2297 const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR", | |
2298 "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG", | |
2299 "ILL_COPROC", "ILL_BADSTK" }; | |
2300 | |
2301 const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV", | |
2302 "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES", | |
2303 "FPE_FLTINV", "FPE_FLTSUB" }; | |
2304 | |
2305 const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" }; | |
2306 | |
2307 const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" }; | |
2308 | |
2309 void os::print_siginfo(outputStream* st, void* siginfo) { | |
2310 st->print("siginfo:"); | |
2311 | |
2312 const int buflen = 100; | |
2313 char buf[buflen]; | |
2314 siginfo_t *si = (siginfo_t*)siginfo; | |
2315 st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen)); | |
2316 char *err = strerror(si->si_errno); | |
2317 if (si->si_errno != 0 && err != NULL) { | |
2318 st->print("si_errno=%s", err); | |
2319 } else { | |
2320 st->print("si_errno=%d", si->si_errno); | |
2321 } | |
2322 const int c = si->si_code; | |
2323 assert(c > 0, "unexpected si_code"); | |
2324 switch (si->si_signo) { | |
2325 case SIGILL: | |
2326 st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]); | |
2327 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
2328 break; | |
2329 case SIGFPE: | |
2330 st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]); | |
2331 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
2332 break; | |
2333 case SIGSEGV: | |
2334 st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]); | |
2335 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
2336 break; | |
2337 case SIGBUS: | |
2338 st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]); | |
2339 st->print(", si_addr=" PTR_FORMAT, si->si_addr); | |
2340 break; | |
2341 default: | |
2342 st->print(", si_code=%d", si->si_code); | |
2343 // no si_addr | |
2344 } | |
2345 | |
2346 if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && | |
2347 UseSharedSpaces) { | |
2348 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
2349 if (mapinfo->is_in_shared_space(si->si_addr)) { | |
2350 st->print("\n\nError accessing class data sharing archive." \ | |
2351 " Mapped file inaccessible during execution, " \ | |
2352 " possible disk/network problem."); | |
2353 } | |
2354 } | |
2355 st->cr(); | |
2356 } | |
2357 | |
2358 // Moved from whole group, because we need them here for diagnostic | |
2359 // prints. | |
2360 #define OLDMAXSIGNUM 32 | |
2361 static int Maxsignum = 0; | |
2362 static int *ourSigFlags = NULL; | |
2363 | |
2364 extern "C" void sigINTRHandler(int, siginfo_t*, void*); | |
2365 | |
2366 int os::Solaris::get_our_sigflags(int sig) { | |
2367 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2368 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2369 return ourSigFlags[sig]; | |
2370 } | |
2371 | |
2372 void os::Solaris::set_our_sigflags(int sig, int flags) { | |
2373 assert(ourSigFlags!=NULL, "signal data structure not initialized"); | |
2374 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); | |
2375 ourSigFlags[sig] = flags; | |
2376 } | |
2377 | |
2378 | |
2379 static const char* get_signal_handler_name(address handler, | |
2380 char* buf, int buflen) { | |
2381 int offset; | |
2382 bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); | |
2383 if (found) { | |
2384 // skip directory names | |
2385 const char *p1, *p2; | |
2386 p1 = buf; | |
2387 size_t len = strlen(os::file_separator()); | |
2388 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
2389 jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); | |
2390 } else { | |
2391 jio_snprintf(buf, buflen, PTR_FORMAT, handler); | |
2392 } | |
2393 return buf; | |
2394 } | |
2395 | |
2396 static void print_signal_handler(outputStream* st, int sig, | |
2397 char* buf, size_t buflen) { | |
2398 struct sigaction sa; | |
2399 | |
2400 sigaction(sig, NULL, &sa); | |
2401 | |
2402 st->print("%s: ", os::exception_name(sig, buf, buflen)); | |
2403 | |
2404 address handler = (sa.sa_flags & SA_SIGINFO) | |
2405 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) | |
2406 : CAST_FROM_FN_PTR(address, sa.sa_handler); | |
2407 | |
2408 if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { | |
2409 st->print("SIG_DFL"); | |
2410 } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { | |
2411 st->print("SIG_IGN"); | |
2412 } else { | |
2413 st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); | |
2414 } | |
2415 | |
2416 st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask); | |
2417 | |
2418 address rh = VMError::get_resetted_sighandler(sig); | |
2419 // May be, handler was resetted by VMError? | |
2420 if(rh != NULL) { | |
2421 handler = rh; | |
2422 sa.sa_flags = VMError::get_resetted_sigflags(sig); | |
2423 } | |
2424 | |
2425 st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags); | |
2426 | |
2427 // Check: is it our handler? | |
2428 if(handler == CAST_FROM_FN_PTR(address, signalHandler) || | |
2429 handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) { | |
2430 // It is our signal handler | |
2431 // check for flags | |
2432 if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
2433 st->print( | |
2434 ", flags was changed from " PTR32_FORMAT ", consider using jsig library", | |
2435 os::Solaris::get_our_sigflags(sig)); | |
2436 } | |
2437 } | |
2438 st->cr(); | |
2439 } | |
2440 | |
2441 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
2442 st->print_cr("Signal Handlers:"); | |
2443 print_signal_handler(st, SIGSEGV, buf, buflen); | |
2444 print_signal_handler(st, SIGBUS , buf, buflen); | |
2445 print_signal_handler(st, SIGFPE , buf, buflen); | |
2446 print_signal_handler(st, SIGPIPE, buf, buflen); | |
2447 print_signal_handler(st, SIGXFSZ, buf, buflen); | |
2448 print_signal_handler(st, SIGILL , buf, buflen); | |
2449 print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen); | |
2450 print_signal_handler(st, ASYNC_SIGNAL, buf, buflen); | |
2451 print_signal_handler(st, BREAK_SIGNAL, buf, buflen); | |
2452 print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen); | |
2453 print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); | |
2454 print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen); | |
2455 print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen); | |
2456 print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen); | |
2457 } | |
2458 | |
2459 static char saved_jvm_path[MAXPATHLEN] = { 0 }; | |
2460 | |
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2461 // Find the full path to the current module, libjvm.so |
0 | 2462 void os::jvm_path(char *buf, jint buflen) { |
2463 // Error checking. | |
2464 if (buflen < MAXPATHLEN) { | |
2465 assert(false, "must use a large-enough buffer"); | |
2466 buf[0] = '\0'; | |
2467 return; | |
2468 } | |
2469 // Lazy resolve the path to current module. | |
2470 if (saved_jvm_path[0] != 0) { | |
2471 strcpy(buf, saved_jvm_path); | |
2472 return; | |
2473 } | |
2474 | |
2475 Dl_info dlinfo; | |
2476 int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo); | |
2477 assert(ret != 0, "cannot locate libjvm"); | |
2478 realpath((char *)dlinfo.dli_fname, buf); | |
2479 | |
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|
2480 if (Arguments::created_by_gamma_launcher()) { |
0 | 2481 // Support for the gamma launcher. Typical value for buf is |
2482 // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at | |
2483 // the right place in the string, then assume we are installed in a JDK and | |
2484 // we're done. Otherwise, check for a JAVA_HOME environment variable and fix | |
2485 // up the path so it looks like libjvm.so is installed there (append a | |
2486 // fake suffix hotspot/libjvm.so). | |
2487 const char *p = buf + strlen(buf) - 1; | |
2488 for (int count = 0; p > buf && count < 5; ++count) { | |
2489 for (--p; p > buf && *p != '/'; --p) | |
2490 /* empty */ ; | |
2491 } | |
2492 | |
2493 if (strncmp(p, "/jre/lib/", 9) != 0) { | |
2494 // Look for JAVA_HOME in the environment. | |
2495 char* java_home_var = ::getenv("JAVA_HOME"); | |
2496 if (java_home_var != NULL && java_home_var[0] != 0) { | |
2497 char cpu_arch[12]; | |
1642 | 2498 char* jrelib_p; |
2499 int len; | |
0 | 2500 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
2501 #ifdef _LP64 | |
2502 // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9. | |
2503 if (strcmp(cpu_arch, "sparc") == 0) { | |
2504 strcat(cpu_arch, "v9"); | |
2505 } else if (strcmp(cpu_arch, "i386") == 0) { | |
2506 strcpy(cpu_arch, "amd64"); | |
2507 } | |
2508 #endif | |
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2509 // Check the current module name "libjvm.so". |
0 | 2510 p = strrchr(buf, '/'); |
2511 assert(strstr(p, "/libjvm") == p, "invalid library name"); | |
2512 | |
2513 realpath(java_home_var, buf); | |
1642 | 2514 // determine if this is a legacy image or modules image |
2515 // modules image doesn't have "jre" subdirectory | |
2516 len = strlen(buf); | |
2517 jrelib_p = buf + len; | |
2518 snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch); | |
2519 if (0 != access(buf, F_OK)) { | |
2520 snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch); | |
2521 } | |
2522 | |
0 | 2523 if (0 == access(buf, F_OK)) { |
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|
2524 // Use current module name "libjvm.so" |
1642 | 2525 len = strlen(buf); |
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|
2526 snprintf(buf + len, buflen-len, "/hotspot/libjvm.so"); |
0 | 2527 } else { |
2528 // Go back to path of .so | |
2529 realpath((char *)dlinfo.dli_fname, buf); | |
2530 } | |
2531 } | |
2532 } | |
2533 } | |
2534 | |
2535 strcpy(saved_jvm_path, buf); | |
2536 } | |
2537 | |
2538 | |
2539 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
2540 // no prefix required, not even "_" | |
2541 } | |
2542 | |
2543 | |
2544 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
2545 // no suffix required | |
2546 } | |
2547 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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2548 // This method is a copy of JDK's sysGetLastErrorString |
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diff
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|
2549 // from src/solaris/hpi/src/system_md.c |
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diff
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|
2550 |
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diff
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|
2551 size_t os::lasterror(char *buf, size_t len) { |
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diff
changeset
|
2552 |
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diff
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|
2553 if (errno == 0) return 0; |
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diff
changeset
|
2554 |
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diff
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|
2555 const char *s = ::strerror(errno); |
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diff
changeset
|
2556 size_t n = ::strlen(s); |
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1972
diff
changeset
|
2557 if (n >= len) { |
828eafbd85cc
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diff
changeset
|
2558 n = len - 1; |
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diff
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|
2559 } |
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diff
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|
2560 ::strncpy(buf, s, n); |
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diff
changeset
|
2561 buf[n] = '\0'; |
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diff
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|
2562 return n; |
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diff
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|
2563 } |
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|
2564 |
0 | 2565 |
2566 // sun.misc.Signal | |
2567 | |
2568 extern "C" { | |
2569 static void UserHandler(int sig, void *siginfo, void *context) { | |
2570 // Ctrl-C is pressed during error reporting, likely because the error | |
2571 // handler fails to abort. Let VM die immediately. | |
2572 if (sig == SIGINT && is_error_reported()) { | |
2573 os::die(); | |
2574 } | |
2575 | |
2576 os::signal_notify(sig); | |
2577 // We do not need to reinstate the signal handler each time... | |
2578 } | |
2579 } | |
2580 | |
2581 void* os::user_handler() { | |
2582 return CAST_FROM_FN_PTR(void*, UserHandler); | |
2583 } | |
2584 | |
10405 | 2585 class Semaphore : public StackObj { |
2586 public: | |
2587 Semaphore(); | |
2588 ~Semaphore(); | |
2589 void signal(); | |
2590 void wait(); | |
2591 bool trywait(); | |
2592 bool timedwait(unsigned int sec, int nsec); | |
2593 private: | |
2594 sema_t _semaphore; | |
2595 }; | |
2596 | |
2597 | |
2598 Semaphore::Semaphore() { | |
2599 sema_init(&_semaphore, 0, NULL, NULL); | |
2600 } | |
2601 | |
2602 Semaphore::~Semaphore() { | |
2603 sema_destroy(&_semaphore); | |
2604 } | |
2605 | |
2606 void Semaphore::signal() { | |
2607 sema_post(&_semaphore); | |
2608 } | |
2609 | |
2610 void Semaphore::wait() { | |
2611 sema_wait(&_semaphore); | |
2612 } | |
2613 | |
2614 bool Semaphore::trywait() { | |
2615 return sema_trywait(&_semaphore) == 0; | |
2616 } | |
2617 | |
2618 bool Semaphore::timedwait(unsigned int sec, int nsec) { | |
2619 struct timespec ts; | |
2620 unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec); | |
2621 | |
2622 while (1) { | |
2623 int result = sema_timedwait(&_semaphore, &ts); | |
2624 if (result == 0) { | |
2625 return true; | |
2626 } else if (errno == EINTR) { | |
2627 continue; | |
2628 } else if (errno == ETIME) { | |
2629 return false; | |
2630 } else { | |
2631 return false; | |
2632 } | |
2633 } | |
2634 } | |
2635 | |
0 | 2636 extern "C" { |
2637 typedef void (*sa_handler_t)(int); | |
2638 typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); | |
2639 } | |
2640 | |
2641 void* os::signal(int signal_number, void* handler) { | |
2642 struct sigaction sigAct, oldSigAct; | |
2643 sigfillset(&(sigAct.sa_mask)); | |
2644 sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND; | |
2645 sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); | |
2646 | |
2647 if (sigaction(signal_number, &sigAct, &oldSigAct)) | |
2648 // -1 means registration failed | |
2649 return (void *)-1; | |
2650 | |
2651 return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); | |
2652 } | |
2653 | |
2654 void os::signal_raise(int signal_number) { | |
2655 raise(signal_number); | |
2656 } | |
2657 | |
2658 /* | |
2659 * The following code is moved from os.cpp for making this | |
2660 * code platform specific, which it is by its very nature. | |
2661 */ | |
2662 | |
2663 // a counter for each possible signal value | |
2664 static int Sigexit = 0; | |
2665 static int Maxlibjsigsigs; | |
2666 static jint *pending_signals = NULL; | |
2667 static int *preinstalled_sigs = NULL; | |
2668 static struct sigaction *chainedsigactions = NULL; | |
2669 static sema_t sig_sem; | |
2670 typedef int (*version_getting_t)(); | |
2671 version_getting_t os::Solaris::get_libjsig_version = NULL; | |
2672 static int libjsigversion = NULL; | |
2673 | |
2674 int os::sigexitnum_pd() { | |
2675 assert(Sigexit > 0, "signal memory not yet initialized"); | |
2676 return Sigexit; | |
2677 } | |
2678 | |
2679 void os::Solaris::init_signal_mem() { | |
2680 // Initialize signal structures | |
2681 Maxsignum = SIGRTMAX; | |
2682 Sigexit = Maxsignum+1; | |
2683 assert(Maxsignum >0, "Unable to obtain max signal number"); | |
2684 | |
2685 Maxlibjsigsigs = Maxsignum; | |
2686 | |
2687 // pending_signals has one int per signal | |
2688 // The additional signal is for SIGEXIT - exit signal to signal_thread | |
6197 | 2689 pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1), mtInternal); |
0 | 2690 memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1))); |
2691 | |
2692 if (UseSignalChaining) { | |
2693 chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction) | |
6197 | 2694 * (Maxsignum + 1), mtInternal); |
0 | 2695 memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1))); |
6197 | 2696 preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1), mtInternal); |
0 | 2697 memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1))); |
2698 } | |
6197 | 2699 ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ), mtInternal); |
0 | 2700 memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1)); |
2701 } | |
2702 | |
2703 void os::signal_init_pd() { | |
2704 int ret; | |
2705 | |
2706 ret = ::sema_init(&sig_sem, 0, NULL, NULL); | |
2707 assert(ret == 0, "sema_init() failed"); | |
2708 } | |
2709 | |
2710 void os::signal_notify(int signal_number) { | |
2711 int ret; | |
2712 | |
2713 Atomic::inc(&pending_signals[signal_number]); | |
2714 ret = ::sema_post(&sig_sem); | |
2715 assert(ret == 0, "sema_post() failed"); | |
2716 } | |
2717 | |
2718 static int check_pending_signals(bool wait_for_signal) { | |
2719 int ret; | |
2720 while (true) { | |
2721 for (int i = 0; i < Sigexit + 1; i++) { | |
2722 jint n = pending_signals[i]; | |
2723 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
2724 return i; | |
2725 } | |
2726 } | |
2727 if (!wait_for_signal) { | |
2728 return -1; | |
2729 } | |
2730 JavaThread *thread = JavaThread::current(); | |
2731 ThreadBlockInVM tbivm(thread); | |
2732 | |
2733 bool threadIsSuspended; | |
2734 do { | |
2735 thread->set_suspend_equivalent(); | |
2736 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
2737 while((ret = ::sema_wait(&sig_sem)) == EINTR) | |
2738 ; | |
2739 assert(ret == 0, "sema_wait() failed"); | |
2740 | |
2741 // were we externally suspended while we were waiting? | |
2742 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
2743 if (threadIsSuspended) { | |
2744 // | |
2745 // The semaphore has been incremented, but while we were waiting | |
2746 // another thread suspended us. We don't want to continue running | |
2747 // while suspended because that would surprise the thread that | |
2748 // suspended us. | |
2749 // | |
2750 ret = ::sema_post(&sig_sem); | |
2751 assert(ret == 0, "sema_post() failed"); | |
2752 | |
2753 thread->java_suspend_self(); | |
2754 } | |
2755 } while (threadIsSuspended); | |
2756 } | |
2757 } | |
2758 | |
2759 int os::signal_lookup() { | |
2760 return check_pending_signals(false); | |
2761 } | |
2762 | |
2763 int os::signal_wait() { | |
2764 return check_pending_signals(true); | |
2765 } | |
2766 | |
2767 //////////////////////////////////////////////////////////////////////////////// | |
2768 // Virtual Memory | |
2769 | |
2770 static int page_size = -1; | |
2771 | |
2772 // The mmap MAP_ALIGN flag is supported on Solaris 9 and later. init_2() will | |
2773 // clear this var if support is not available. | |
2774 static bool has_map_align = true; | |
2775 | |
2776 int os::vm_page_size() { | |
2777 assert(page_size != -1, "must call os::init"); | |
2778 return page_size; | |
2779 } | |
2780 | |
2781 // Solaris allocates memory by pages. | |
2782 int os::vm_allocation_granularity() { | |
2783 assert(page_size != -1, "must call os::init"); | |
2784 return page_size; | |
2785 } | |
2786 | |
10969
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diff
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|
2787 static bool recoverable_mmap_error(int err) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
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diff
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|
2788 // See if the error is one we can let the caller handle. This |
a837fa3d3f86
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dcubed
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diff
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|
2789 // list of errno values comes from the Solaris mmap(2) man page. |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
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diff
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|
2790 switch (err) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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10405
diff
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|
2791 case EBADF: |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
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10405
diff
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|
2792 case EINVAL: |
a837fa3d3f86
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dcubed
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10405
diff
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|
2793 case ENOTSUP: |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2794 // let the caller deal with these errors |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2795 return true; |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
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diff
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|
2796 |
a837fa3d3f86
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10405
diff
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|
2797 default: |
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8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2798 // Any remaining errors on this OS can cause our reserved mapping |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2799 // to be lost. That can cause confusion where different data |
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|
2800 // structures think they have the same memory mapped. The worst |
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diff
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|
2801 // scenario is if both the VM and a library think they have the |
a837fa3d3f86
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|
2802 // same memory mapped. |
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diff
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|
2803 return false; |
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|
2804 } |
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|
2805 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2806 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2807 static void warn_fail_commit_memory(char* addr, size_t bytes, bool exec, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2808 int err) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2809 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2810 ", %d) failed; error='%s' (errno=%d)", addr, bytes, exec, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2811 strerror(err), err); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2812 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2813 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2814 static void warn_fail_commit_memory(char* addr, size_t bytes, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2815 size_t alignment_hint, bool exec, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2816 int err) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
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|
2817 warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
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|
2818 ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, bytes, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2819 alignment_hint, exec, strerror(err), err); |
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8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2820 } |
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8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2821 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2822 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, bool exec) { |
656 | 2823 int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; |
0 | 2824 size_t size = bytes; |
3885 | 2825 char *res = Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, prot); |
2826 if (res != NULL) { | |
2827 if (UseNUMAInterleaving) { | |
2828 numa_make_global(addr, bytes); | |
2829 } | |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2830 return 0; |
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8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2831 } |
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8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2832 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2833 int err = errno; // save errno from mmap() call in mmap_chunk() |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2834 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2835 if (!recoverable_mmap_error(err)) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2836 warn_fail_commit_memory(addr, bytes, exec, err); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2837 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, "committing reserved memory."); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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|
2838 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2839 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
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|
2840 return err; |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2841 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
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|
2842 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2843 bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
changeset
|
2844 return Solaris::commit_memory_impl(addr, bytes, exec) == 0; |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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diff
changeset
|
2845 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2846 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
10405
diff
changeset
|
2847 void os::pd_commit_memory_or_exit(char* addr, size_t bytes, bool exec, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
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|
2848 const char* mesg) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2849 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
|
2850 int err = os::Solaris::commit_memory_impl(addr, bytes, exec); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
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diff
changeset
|
2851 if (err != 0) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
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diff
changeset
|
2852 // 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
|
2853 warn_fail_commit_memory(addr, bytes, exec, err); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
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diff
changeset
|
2854 vm_exit_out_of_memory(bytes, OOM_MMAP_ERROR, mesg); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
10405
diff
changeset
|
2855 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2856 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
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diff
changeset
|
2857 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2858 int os::Solaris::commit_memory_impl(char* addr, size_t bytes, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2859 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
|
2860 int err = Solaris::commit_memory_impl(addr, bytes, exec); |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
10405
diff
changeset
|
2861 if (err == 0) { |
0 | 2862 if (UseMPSS && alignment_hint > (size_t)vm_page_size()) { |
2863 // If the large page size has been set and the VM | |
2864 // is using large pages, use the large page size | |
2865 // if it is smaller than the alignment hint. This is | |
2866 // a case where the VM wants to use a larger alignment size | |
2867 // for its own reasons but still want to use large pages | |
2868 // (which is what matters to setting the mpss range. | |
2869 size_t page_size = 0; | |
2870 if (large_page_size() < alignment_hint) { | |
2871 assert(UseLargePages, "Expected to be here for large page use only"); | |
2872 page_size = large_page_size(); | |
2873 } else { | |
2874 // If the alignment hint is less than the large page | |
2875 // size, the VM wants a particular alignment (thus the hint) | |
2876 // for internal reasons. Try to set the mpss range using | |
2877 // the alignment_hint. | |
2878 page_size = alignment_hint; | |
2879 } | |
2880 // Since this is a hint, ignore any failures. | |
2881 (void)Solaris::set_mpss_range(addr, bytes, page_size); | |
2882 } | |
10969
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2883 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2884 return err; |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
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parents:
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diff
changeset
|
2885 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2886 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2887 bool os::pd_commit_memory(char* addr, size_t bytes, size_t alignment_hint, |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2888 bool exec) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2889 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
|
2890 } |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2891 |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2892 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
|
2893 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
|
2894 const char* mesg) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2895 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
|
2896 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
|
2897 if (err != 0) { |
a837fa3d3f86
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
10405
diff
changeset
|
2898 // 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
|
2899 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
|
2900 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
|
2901 } |
0 | 2902 } |
2903 | |
2904 // Uncommit the pages in a specified region. | |
6197 | 2905 void os::pd_free_memory(char* addr, size_t bytes, size_t alignment_hint) { |
0 | 2906 if (madvise(addr, bytes, MADV_FREE) < 0) { |
2907 debug_only(warning("MADV_FREE failed.")); | |
2908 return; | |
2909 } | |
2910 } | |
2911 | |
6197 | 2912 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
|
2913 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
|
2914 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2915 |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2916 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
|
2917 return os::uncommit_memory(addr, size); |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2918 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
parents:
1123
diff
changeset
|
2919 |
0 | 2920 // Change the page size in a given range. |
6197 | 2921 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { |
0 | 2922 assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned."); |
2923 assert((intptr_t)(addr + bytes) % alignment_hint == 0, "End should be aligned."); | |
3292
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
2924 if (UseLargePages && UseMPSS) { |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
2925 Solaris::set_mpss_range(addr, bytes, alignment_hint); |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
2926 } |
0 | 2927 } |
2928 | |
2929 // Tell the OS to make the range local to the first-touching LWP | |
141 | 2930 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { |
0 | 2931 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); |
2932 if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) { | |
2933 debug_only(warning("MADV_ACCESS_LWP failed.")); | |
2934 } | |
2935 } | |
2936 | |
2937 // Tell the OS that this range would be accessed from different LWPs. | |
2938 void os::numa_make_global(char *addr, size_t bytes) { | |
2939 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); | |
2940 if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) { | |
2941 debug_only(warning("MADV_ACCESS_MANY failed.")); | |
2942 } | |
2943 } | |
2944 | |
2945 // Get the number of the locality groups. | |
2946 size_t os::numa_get_groups_num() { | |
2947 size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie()); | |
2948 return n != -1 ? n : 1; | |
2949 } | |
2950 | |
2951 // Get a list of leaf locality groups. A leaf lgroup is group that | |
2952 // doesn't have any children. Typical leaf group is a CPU or a CPU/memory | |
2953 // board. An LWP is assigned to one of these groups upon creation. | |
2954 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
2955 if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) { | |
2956 ids[0] = 0; | |
2957 return 1; | |
2958 } | |
2959 int result_size = 0, top = 1, bottom = 0, cur = 0; | |
2960 for (int k = 0; k < size; k++) { | |
2961 int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur], | |
2962 (Solaris::lgrp_id_t*)&ids[top], size - top); | |
2963 if (r == -1) { | |
2964 ids[0] = 0; | |
2965 return 1; | |
2966 } | |
2967 if (!r) { | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2968 // That's a leaf node. |
0 | 2969 assert (bottom <= cur, "Sanity check"); |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2970 // Check if the node has memory |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2971 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
|
2972 NULL, 0, LGRP_RSRC_MEM) > 0) { |
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
2973 ids[bottom++] = ids[cur]; |
e3729351c946
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|
2974 } |
0 | 2975 } |
2976 top += r; | |
2977 cur++; | |
2978 } | |
268
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|
2979 if (bottom == 0) { |
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2980 // Handle a situation, when the OS reports no memory available. |
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2981 // Assume UMA architecture. |
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2982 ids[0] = 0; |
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2983 return 1; |
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2984 } |
0 | 2985 return bottom; |
2986 } | |
2987 | |
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diff
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|
2988 // Detect the topology change. Typically happens during CPU plugging-unplugging. |
0 | 2989 bool os::numa_topology_changed() { |
2990 int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie()); | |
2991 if (is_stale != -1 && is_stale) { | |
2992 Solaris::lgrp_fini(Solaris::lgrp_cookie()); | |
2993 Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER); | |
2994 assert(c != 0, "Failure to initialize LGRP API"); | |
2995 Solaris::set_lgrp_cookie(c); | |
2996 return true; | |
2997 } | |
2998 return false; | |
2999 } | |
3000 | |
3001 // Get the group id of the current LWP. | |
3002 int os::numa_get_group_id() { | |
144
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|
3003 int lgrp_id = Solaris::lgrp_home(P_LWPID, P_MYID); |
0 | 3004 if (lgrp_id == -1) { |
3005 return 0; | |
3006 } | |
144
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|
3007 const int size = os::numa_get_groups_num(); |
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|
3008 int *ids = (int*)alloca(size * sizeof(int)); |
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|
3009 |
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|
3010 // Get the ids of all lgroups with memory; r is the count. |
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|
3011 int r = Solaris::lgrp_resources(Solaris::lgrp_cookie(), lgrp_id, |
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|
3012 (Solaris::lgrp_id_t*)ids, size, LGRP_RSRC_MEM); |
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|
3013 if (r <= 0) { |
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|
3014 return 0; |
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|
3015 } |
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|
3016 return ids[os::random() % r]; |
0 | 3017 } |
3018 | |
3019 // Request information about the page. | |
3020 bool os::get_page_info(char *start, page_info* info) { | |
3021 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
3022 uint64_t addr = (uintptr_t)start; | |
3023 uint64_t outdata[2]; | |
3024 uint_t validity = 0; | |
3025 | |
3026 if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) { | |
3027 return false; | |
3028 } | |
3029 | |
3030 info->size = 0; | |
3031 info->lgrp_id = -1; | |
3032 | |
3033 if ((validity & 1) != 0) { | |
3034 if ((validity & 2) != 0) { | |
3035 info->lgrp_id = outdata[0]; | |
3036 } | |
3037 if ((validity & 4) != 0) { | |
3038 info->size = outdata[1]; | |
3039 } | |
3040 return true; | |
3041 } | |
3042 return false; | |
3043 } | |
3044 | |
3045 // Scan the pages from start to end until a page different than | |
3046 // the one described in the info parameter is encountered. | |
3047 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
3048 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; | |
3049 const size_t types = sizeof(info_types) / sizeof(info_types[0]); | |
3050 uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT]; | |
3051 uint_t validity[MAX_MEMINFO_CNT]; | |
3052 | |
3053 size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size); | |
3054 uint64_t p = (uint64_t)start; | |
3055 while (p < (uint64_t)end) { | |
3056 addrs[0] = p; | |
3057 size_t addrs_count = 1; | |
8739
ca9580859cf4
8004697: SIGSEGV on Solaris sparc with -XX:+UseNUMA
stefank
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8067
diff
changeset
|
3058 while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] + page_size < (uint64_t)end) { |
0 | 3059 addrs[addrs_count] = addrs[addrs_count - 1] + page_size; |
3060 addrs_count++; | |
3061 } | |
3062 | |
3063 if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) { | |
3064 return NULL; | |
3065 } | |
3066 | |
3067 size_t i = 0; | |
3068 for (; i < addrs_count; i++) { | |
3069 if ((validity[i] & 1) != 0) { | |
3070 if ((validity[i] & 4) != 0) { | |
3071 if (outdata[types * i + 1] != page_expected->size) { | |
3072 break; | |
3073 } | |
3074 } else | |
3075 if (page_expected->size != 0) { | |
3076 break; | |
3077 } | |
3078 | |
3079 if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) { | |
3080 if (outdata[types * i] != page_expected->lgrp_id) { | |
3081 break; | |
3082 } | |
3083 } | |
3084 } else { | |
3085 return NULL; | |
3086 } | |
3087 } | |
3088 | |
3089 if (i != addrs_count) { | |
3090 if ((validity[i] & 2) != 0) { | |
3091 page_found->lgrp_id = outdata[types * i]; | |
3092 } else { | |
3093 page_found->lgrp_id = -1; | |
3094 } | |
3095 if ((validity[i] & 4) != 0) { | |
3096 page_found->size = outdata[types * i + 1]; | |
3097 } else { | |
3098 page_found->size = 0; | |
3099 } | |
3100 return (char*)addrs[i]; | |
3101 } | |
3102 | |
3103 p = addrs[addrs_count - 1] + page_size; | |
3104 } | |
3105 return end; | |
3106 } | |
3107 | |
6197 | 3108 bool os::pd_uncommit_memory(char* addr, size_t bytes) { |
0 | 3109 size_t size = bytes; |
3110 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
3111 // uncommitted page. Otherwise, the read/write might succeed if we | |
3112 // have enough swap space to back the physical page. | |
3113 return | |
3114 NULL != Solaris::mmap_chunk(addr, size, | |
3115 MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, | |
3116 PROT_NONE); | |
3117 } | |
3118 | |
3119 char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) { | |
3120 char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0); | |
3121 | |
3122 if (b == MAP_FAILED) { | |
3123 return NULL; | |
3124 } | |
3125 return b; | |
3126 } | |
3127 | |
60
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diff
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|
3128 char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed) { |
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6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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0
diff
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|
3129 char* addr = requested_addr; |
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6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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diff
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|
3130 int flags = MAP_PRIVATE | MAP_NORESERVE; |
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6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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diff
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|
3131 |
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|
3132 assert(!(fixed && (alignment_hint > 0)), "alignment hint meaningless with fixed mmap"); |
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6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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diff
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|
3133 |
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|
3134 if (fixed) { |
8d84e28e68ba
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diff
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|
3135 flags |= MAP_FIXED; |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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diff
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|
3136 } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) { |
0 | 3137 flags |= MAP_ALIGN; |
3138 addr = (char*) alignment_hint; | |
3139 } | |
3140 | |
3141 // Map uncommitted pages PROT_NONE so we fail early if we touch an | |
3142 // uncommitted page. Otherwise, the read/write might succeed if we | |
3143 // have enough swap space to back the physical page. | |
60
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|
3144 return mmap_chunk(addr, bytes, flags, PROT_NONE); |
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6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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0
diff
changeset
|
3145 } |
8d84e28e68ba
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|
3146 |
6197 | 3147 char* os::pd_reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) { |
60
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0
diff
changeset
|
3148 char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL)); |
0 | 3149 |
3150 guarantee(requested_addr == NULL || requested_addr == addr, | |
3151 "OS failed to return requested mmap address."); | |
3152 return addr; | |
3153 } | |
3154 | |
3155 // Reserve memory at an arbitrary address, only if that area is | |
3156 // available (and not reserved for something else). | |
3157 | |
6197 | 3158 char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
0 | 3159 const int max_tries = 10; |
3160 char* base[max_tries]; | |
3161 size_t size[max_tries]; | |
3162 | |
3163 // Solaris adds a gap between mmap'ed regions. The size of the gap | |
3164 // is dependent on the requested size and the MMU. Our initial gap | |
3165 // value here is just a guess and will be corrected later. | |
3166 bool had_top_overlap = false; | |
3167 bool have_adjusted_gap = false; | |
3168 size_t gap = 0x400000; | |
3169 | |
3170 // Assert only that the size is a multiple of the page size, since | |
3171 // that's all that mmap requires, and since that's all we really know | |
3172 // about at this low abstraction level. If we need higher alignment, | |
3173 // we can either pass an alignment to this method or verify alignment | |
3174 // in one of the methods further up the call chain. See bug 5044738. | |
3175 assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); | |
3176 | |
60
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sbohne
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0
diff
changeset
|
3177 // Since snv_84, Solaris attempts to honor the address hint - see 5003415. |
8d84e28e68ba
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sbohne
parents:
0
diff
changeset
|
3178 // Give it a try, if the kernel honors the hint we can return immediately. |
8d84e28e68ba
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0
diff
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|
3179 char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false); |
6882
716c64bda5ba
7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
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6854
diff
changeset
|
3180 |
60
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diff
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|
3181 volatile int err = errno; |
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6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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|
3182 if (addr == requested_addr) { |
8d84e28e68ba
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diff
changeset
|
3183 return addr; |
8d84e28e68ba
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diff
changeset
|
3184 } else if (addr != NULL) { |
6882
716c64bda5ba
7199092: NMT: NMT needs to deal overlapped virtual memory ranges
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6854
diff
changeset
|
3185 pd_unmap_memory(addr, bytes); |
60
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diff
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|
3186 } |
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diff
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|
3187 |
8d84e28e68ba
6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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|
3188 if (PrintMiscellaneous && Verbose) { |
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diff
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|
3189 char buf[256]; |
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6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
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diff
changeset
|
3190 buf[0] = '\0'; |
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diff
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|
3191 if (addr == NULL) { |
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diff
changeset
|
3192 jio_snprintf(buf, sizeof(buf), ": %s", strerror(err)); |
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|
3193 } |
2080 | 3194 warning("attempt_reserve_memory_at: couldn't reserve " SIZE_FORMAT " bytes at " |
60
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|
3195 PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT |
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diff
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|
3196 "%s", bytes, requested_addr, addr, buf); |
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0
diff
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|
3197 } |
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|
3198 |
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|
3199 // Address hint method didn't work. Fall back to the old method. |
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diff
changeset
|
3200 // In theory, once SNV becomes our oldest supported platform, this |
8d84e28e68ba
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0
diff
changeset
|
3201 // code will no longer be needed. |
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diff
changeset
|
3202 // |
0 | 3203 // Repeatedly allocate blocks until the block is allocated at the |
3204 // right spot. Give up after max_tries. | |
3205 int i; | |
3206 for (i = 0; i < max_tries; ++i) { | |
3207 base[i] = reserve_memory(bytes); | |
3208 | |
3209 if (base[i] != NULL) { | |
3210 // Is this the block we wanted? | |
3211 if (base[i] == requested_addr) { | |
3212 size[i] = bytes; | |
3213 break; | |
3214 } | |
3215 | |
3216 // check that the gap value is right | |
3217 if (had_top_overlap && !have_adjusted_gap) { | |
3218 size_t actual_gap = base[i-1] - base[i] - bytes; | |
3219 if (gap != actual_gap) { | |
3220 // adjust the gap value and retry the last 2 allocations | |
3221 assert(i > 0, "gap adjustment code problem"); | |
3222 have_adjusted_gap = true; // adjust the gap only once, just in case | |
3223 gap = actual_gap; | |
3224 if (PrintMiscellaneous && Verbose) { | |
3225 warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap); | |
3226 } | |
3227 unmap_memory(base[i], bytes); | |
3228 unmap_memory(base[i-1], size[i-1]); | |
3229 i-=2; | |
3230 continue; | |
3231 } | |
3232 } | |
3233 | |
3234 // Does this overlap the block we wanted? Give back the overlapped | |
3235 // parts and try again. | |
3236 // | |
3237 // There is still a bug in this code: if top_overlap == bytes, | |
3238 // the overlap is offset from requested region by the value of gap. | |
3239 // In this case giving back the overlapped part will not work, | |
3240 // because we'll give back the entire block at base[i] and | |
3241 // therefore the subsequent allocation will not generate a new gap. | |
3242 // This could be fixed with a new algorithm that used larger | |
3243 // or variable size chunks to find the requested region - | |
3244 // but such a change would introduce additional complications. | |
3245 // It's rare enough that the planets align for this bug, | |
3246 // so we'll just wait for a fix for 6204603/5003415 which | |
3247 // will provide a mmap flag to allow us to avoid this business. | |
3248 | |
3249 size_t top_overlap = requested_addr + (bytes + gap) - base[i]; | |
3250 if (top_overlap >= 0 && top_overlap < bytes) { | |
3251 had_top_overlap = true; | |
3252 unmap_memory(base[i], top_overlap); | |
3253 base[i] += top_overlap; | |
3254 size[i] = bytes - top_overlap; | |
3255 } else { | |
3256 size_t bottom_overlap = base[i] + bytes - requested_addr; | |
3257 if (bottom_overlap >= 0 && bottom_overlap < bytes) { | |
3258 if (PrintMiscellaneous && Verbose && bottom_overlap == 0) { | |
3259 warning("attempt_reserve_memory_at: possible alignment bug"); | |
3260 } | |
3261 unmap_memory(requested_addr, bottom_overlap); | |
3262 size[i] = bytes - bottom_overlap; | |
3263 } else { | |
3264 size[i] = bytes; | |
3265 } | |
3266 } | |
3267 } | |
3268 } | |
3269 | |
3270 // Give back the unused reserved pieces. | |
3271 | |
3272 for (int j = 0; j < i; ++j) { | |
3273 if (base[j] != NULL) { | |
3274 unmap_memory(base[j], size[j]); | |
3275 } | |
3276 } | |
3277 | |
3278 return (i < max_tries) ? requested_addr : NULL; | |
3279 } | |
3280 | |
6197 | 3281 bool os::pd_release_memory(char* addr, size_t bytes) { |
0 | 3282 size_t size = bytes; |
3283 return munmap(addr, size) == 0; | |
3284 } | |
3285 | |
3286 static bool solaris_mprotect(char* addr, size_t bytes, int prot) { | |
3287 assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()), | |
3288 "addr must be page aligned"); | |
3289 int retVal = mprotect(addr, bytes, prot); | |
3290 return retVal == 0; | |
3291 } | |
3292 | |
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6716785: implicit null checks not triggering with CompressedOops
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3293 // Protect memory (Used to pass readonly pages through |
0 | 3294 // JNI GetArray<type>Elements with empty arrays.) |
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3295 // Also, used for serialization page and for compressed oops null pointer |
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3296 // checking. |
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3297 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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3298 bool is_committed) { |
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3299 unsigned int p = 0; |
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3300 switch (prot) { |
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3301 case MEM_PROT_NONE: p = PROT_NONE; break; |
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3302 case MEM_PROT_READ: p = PROT_READ; break; |
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3303 case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
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3304 case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; |
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3305 default: |
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3306 ShouldNotReachHere(); |
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3307 } |
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3308 // is_committed is unused. |
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3309 return solaris_mprotect(addr, bytes, p); |
0 | 3310 } |
3311 | |
3312 // guard_memory and unguard_memory only happens within stack guard pages. | |
3313 // Since ISM pertains only to the heap, guard and unguard memory should not | |
3314 /// happen with an ISM region. | |
3315 bool os::guard_memory(char* addr, size_t bytes) { | |
3316 return solaris_mprotect(addr, bytes, PROT_NONE); | |
3317 } | |
3318 | |
3319 bool os::unguard_memory(char* addr, size_t bytes) { | |
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3320 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE); |
0 | 3321 } |
3322 | |
3323 // Large page support | |
3324 | |
3325 // UseLargePages is the master flag to enable/disable large page memory. | |
3326 // UseMPSS and UseISM are supported for compatibility reasons. Their combined | |
3327 // effects can be described in the following table: | |
3328 // | |
3329 // UseLargePages UseMPSS UseISM | |
3330 // false * * => UseLargePages is the master switch, turning | |
3331 // it off will turn off both UseMPSS and | |
3332 // UseISM. VM will not use large page memory | |
3333 // regardless the settings of UseMPSS/UseISM. | |
3334 // true false false => Unless future Solaris provides other | |
3335 // mechanism to use large page memory, this | |
3336 // combination is equivalent to -UseLargePages, | |
3337 // VM will not use large page memory | |
3338 // true true false => JVM will use MPSS for large page memory. | |
3339 // This is the default behavior. | |
3340 // true false true => JVM will use ISM for large page memory. | |
3341 // true true true => JVM will use ISM if it is available. | |
3342 // Otherwise, JVM will fall back to MPSS. | |
3343 // Becaues ISM is now available on all | |
3344 // supported Solaris versions, this combination | |
3345 // is equivalent to +UseISM -UseMPSS. | |
3346 | |
3347 static size_t _large_page_size = 0; | |
3348 | |
3349 bool os::Solaris::ism_sanity_check(bool warn, size_t * page_size) { | |
3350 // x86 uses either 2M or 4M page, depending on whether PAE (Physical Address | |
3351 // Extensions) mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. Sparc | |
3352 // can support multiple page sizes. | |
3353 | |
3354 // Don't bother to probe page size because getpagesizes() comes with MPSS. | |
3355 // ISM is only recommended on old Solaris where there is no MPSS support. | |
3356 // Simply choose a conservative value as default. | |
3357 *page_size = LargePageSizeInBytes ? LargePageSizeInBytes : | |
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3358 SPARC_ONLY(4 * M) IA32_ONLY(4 * M) AMD64_ONLY(2 * M) |
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3359 ARM_ONLY(2 * M); |
0 | 3360 |
3361 // ISM is available on all supported Solaris versions | |
3362 return true; | |
3363 } | |
3364 | |
3365 // Insertion sort for small arrays (descending order). | |
3366 static void insertion_sort_descending(size_t* array, int len) { | |
3367 for (int i = 0; i < len; i++) { | |
3368 size_t val = array[i]; | |
3369 for (size_t key = i; key > 0 && array[key - 1] < val; --key) { | |
3370 size_t tmp = array[key]; | |
3371 array[key] = array[key - 1]; | |
3372 array[key - 1] = tmp; | |
3373 } | |
3374 } | |
3375 } | |
3376 | |
3377 bool os::Solaris::mpss_sanity_check(bool warn, size_t * page_size) { | |
3378 const unsigned int usable_count = VM_Version::page_size_count(); | |
3379 if (usable_count == 1) { | |
3380 return false; | |
3381 } | |
3382 | |
3859 | 3383 // Find the right getpagesizes interface. When solaris 11 is the minimum |
3384 // build platform, getpagesizes() (without the '2') can be called directly. | |
3385 typedef int (*gps_t)(size_t[], int); | |
3386 gps_t gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes2")); | |
3387 if (gps_func == NULL) { | |
3388 gps_func = CAST_TO_FN_PTR(gps_t, dlsym(RTLD_DEFAULT, "getpagesizes")); | |
3389 if (gps_func == NULL) { | |
3390 if (warn) { | |
3391 warning("MPSS is not supported by the operating system."); | |
3392 } | |
3393 return false; | |
3394 } | |
3395 } | |
3396 | |
0 | 3397 // Fill the array of page sizes. |
3859 | 3398 int n = (*gps_func)(_page_sizes, page_sizes_max); |
0 | 3399 assert(n > 0, "Solaris bug?"); |
3859 | 3400 |
0 | 3401 if (n == page_sizes_max) { |
3402 // Add a sentinel value (necessary only if the array was completely filled | |
3403 // since it is static (zeroed at initialization)). | |
3404 _page_sizes[--n] = 0; | |
3405 DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");) | |
3406 } | |
3407 assert(_page_sizes[n] == 0, "missing sentinel"); | |
3859 | 3408 trace_page_sizes("available page sizes", _page_sizes, n); |
0 | 3409 |
3410 if (n == 1) return false; // Only one page size available. | |
3411 | |
3412 // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and | |
3413 // select up to usable_count elements. First sort the array, find the first | |
3414 // acceptable value, then copy the usable sizes to the top of the array and | |
3415 // trim the rest. Make sure to include the default page size :-). | |
3416 // | |
3417 // A better policy could get rid of the 4M limit by taking the sizes of the | |
3418 // important VM memory regions (java heap and possibly the code cache) into | |
3419 // account. | |
3420 insertion_sort_descending(_page_sizes, n); | |
3421 const size_t size_limit = | |
3422 FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes; | |
3423 int beg; | |
3424 for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ; | |
3425 const int end = MIN2((int)usable_count, n) - 1; | |
3426 for (int cur = 0; cur < end; ++cur, ++beg) { | |
3427 _page_sizes[cur] = _page_sizes[beg]; | |
3428 } | |
3429 _page_sizes[end] = vm_page_size(); | |
3430 _page_sizes[end + 1] = 0; | |
3431 | |
3432 if (_page_sizes[end] > _page_sizes[end - 1]) { | |
3433 // Default page size is not the smallest; sort again. | |
3434 insertion_sort_descending(_page_sizes, end + 1); | |
3435 } | |
3436 *page_size = _page_sizes[0]; | |
3437 | |
3859 | 3438 trace_page_sizes("usable page sizes", _page_sizes, end + 1); |
0 | 3439 return true; |
3440 } | |
3441 | |
3318
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3442 void os::large_page_init() { |
0 | 3443 if (!UseLargePages) { |
3444 UseISM = false; | |
3445 UseMPSS = false; | |
3318
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3446 return; |
0 | 3447 } |
3448 | |
3449 // print a warning if any large page related flag is specified on command line | |
3450 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || | |
3451 !FLAG_IS_DEFAULT(UseISM) || | |
3452 !FLAG_IS_DEFAULT(UseMPSS) || | |
3453 !FLAG_IS_DEFAULT(LargePageSizeInBytes); | |
3454 UseISM = UseISM && | |
3455 Solaris::ism_sanity_check(warn_on_failure, &_large_page_size); | |
3456 if (UseISM) { | |
3457 // ISM disables MPSS to be compatible with old JDK behavior | |
3458 UseMPSS = false; | |
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3459 _page_sizes[0] = _large_page_size; |
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3460 _page_sizes[1] = vm_page_size(); |
0 | 3461 } |
3462 | |
3463 UseMPSS = UseMPSS && | |
3464 Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size); | |
3465 | |
3466 UseLargePages = UseISM || UseMPSS; | |
3467 } | |
3468 | |
3469 bool os::Solaris::set_mpss_range(caddr_t start, size_t bytes, size_t align) { | |
3470 // Signal to OS that we want large pages for addresses | |
3471 // from addr, addr + bytes | |
3472 struct memcntl_mha mpss_struct; | |
3473 mpss_struct.mha_cmd = MHA_MAPSIZE_VA; | |
3474 mpss_struct.mha_pagesize = align; | |
3475 mpss_struct.mha_flags = 0; | |
3476 if (memcntl(start, bytes, MC_HAT_ADVISE, | |
3477 (caddr_t) &mpss_struct, 0, 0) < 0) { | |
3478 debug_only(warning("Attempt to use MPSS failed.")); | |
3479 return false; | |
3480 } | |
3481 return true; | |
3482 } | |
3483 | |
3885 | 3484 char* os::reserve_memory_special(size_t size, char* addr, bool exec) { |
656 | 3485 // "exec" is passed in but not used. Creating the shared image for |
3486 // the code cache doesn't have an SHM_X executable permission to check. | |
0 | 3487 assert(UseLargePages && UseISM, "only for ISM large pages"); |
3488 | |
3489 char* retAddr = NULL; | |
3490 int shmid; | |
3491 key_t ismKey; | |
3492 | |
3493 bool warn_on_failure = UseISM && | |
3494 (!FLAG_IS_DEFAULT(UseLargePages) || | |
3495 !FLAG_IS_DEFAULT(UseISM) || | |
3496 !FLAG_IS_DEFAULT(LargePageSizeInBytes) | |
3497 ); | |
3498 char msg[128]; | |
3499 | |
3500 ismKey = IPC_PRIVATE; | |
3501 | |
3502 // Create a large shared memory region to attach to based on size. | |
3503 // Currently, size is the total size of the heap | |
3504 shmid = shmget(ismKey, size, SHM_R | SHM_W | IPC_CREAT); | |
3505 if (shmid == -1){ | |
3506 if (warn_on_failure) { | |
3507 jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno); | |
3508 warning(msg); | |
3509 } | |
3510 return NULL; | |
3511 } | |
3512 | |
3513 // Attach to the region | |
3514 retAddr = (char *) shmat(shmid, 0, SHM_SHARE_MMU | SHM_R | SHM_W); | |
3515 int err = errno; | |
3516 | |
3517 // Remove shmid. If shmat() is successful, the actual shared memory segment | |
3518 // will be deleted when it's detached by shmdt() or when the process | |
3519 // terminates. If shmat() is not successful this will remove the shared | |
3520 // segment immediately. | |
3521 shmctl(shmid, IPC_RMID, NULL); | |
3522 | |
3523 if (retAddr == (char *) -1) { | |
3524 if (warn_on_failure) { | |
3525 jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err); | |
3526 warning(msg); | |
3527 } | |
3528 return NULL; | |
3529 } | |
3885 | 3530 if ((retAddr != NULL) && UseNUMAInterleaving) { |
3531 numa_make_global(retAddr, size); | |
3532 } | |
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3533 |
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3534 // The memory is committed |
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3535 MemTracker::record_virtual_memory_reserve_and_commit((address)retAddr, size, mtNone, CURRENT_PC); |
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3536 |
0 | 3537 return retAddr; |
3538 } | |
3539 | |
3540 bool os::release_memory_special(char* base, size_t bytes) { | |
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3541 MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker(); |
0 | 3542 // detaching the SHM segment will also delete it, see reserve_memory_special() |
3543 int rslt = shmdt(base); | |
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3544 if (rslt == 0) { |
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3545 tkr.record((address)base, bytes); |
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3546 return true; |
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|
3547 } else { |
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3548 tkr.discard(); |
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3549 return false; |
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3550 } |
0 | 3551 } |
3552 | |
3553 size_t os::large_page_size() { | |
3554 return _large_page_size; | |
3555 } | |
3556 | |
3557 // MPSS allows application to commit large page memory on demand; with ISM | |
3558 // the entire memory region must be allocated as shared memory. | |
3559 bool os::can_commit_large_page_memory() { | |
3560 return UseISM ? false : true; | |
3561 } | |
3562 | |
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3563 bool os::can_execute_large_page_memory() { |
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3564 return UseISM ? false : true; |
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3565 } |
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3566 |
0 | 3567 static int os_sleep(jlong millis, bool interruptible) { |
3568 const jlong limit = INT_MAX; | |
3569 jlong prevtime; | |
3570 int res; | |
3571 | |
3572 while (millis > limit) { | |
3573 if ((res = os_sleep(limit, interruptible)) != OS_OK) | |
3574 return res; | |
3575 millis -= limit; | |
3576 } | |
3577 | |
3578 // Restart interrupted polls with new parameters until the proper delay | |
3579 // has been completed. | |
3580 | |
3581 prevtime = getTimeMillis(); | |
3582 | |
3583 while (millis > 0) { | |
3584 jlong newtime; | |
3585 | |
3586 if (!interruptible) { | |
3587 // Following assert fails for os::yield_all: | |
3588 // assert(!thread->is_Java_thread(), "must not be java thread"); | |
3589 res = poll(NULL, 0, millis); | |
3590 } else { | |
3591 JavaThread *jt = JavaThread::current(); | |
3592 | |
3593 INTERRUPTIBLE_NORESTART_VM_ALWAYS(poll(NULL, 0, millis), res, jt, | |
3594 os::Solaris::clear_interrupted); | |
3595 } | |
3596 | |
3597 // INTERRUPTIBLE_NORESTART_VM_ALWAYS returns res == OS_INTRPT for | |
3598 // thread.Interrupt. | |
3599 | |
1967 | 3600 // See c/r 6751923. Poll can return 0 before time |
3601 // has elapsed if time is set via clock_settime (as NTP does). | |
3602 // res == 0 if poll timed out (see man poll RETURN VALUES) | |
3603 // using the logic below checks that we really did | |
3604 // sleep at least "millis" if not we'll sleep again. | |
3605 if( ( res == 0 ) || ((res == OS_ERR) && (errno == EINTR))) { | |
0 | 3606 newtime = getTimeMillis(); |
3607 assert(newtime >= prevtime, "time moving backwards"); | |
3608 /* Doing prevtime and newtime in microseconds doesn't help precision, | |
3609 and trying to round up to avoid lost milliseconds can result in a | |
3610 too-short delay. */ | |
3611 millis -= newtime - prevtime; | |
3612 if(millis <= 0) | |
3613 return OS_OK; | |
3614 prevtime = newtime; | |
3615 } else | |
3616 return res; | |
3617 } | |
3618 | |
3619 return OS_OK; | |
3620 } | |
3621 | |
3622 // Read calls from inside the vm need to perform state transitions | |
3623 size_t os::read(int fd, void *buf, unsigned int nBytes) { | |
3624 INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); | |
3625 } | |
3626 | |
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3627 size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
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3628 INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); |
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3629 } |
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3630 |
0 | 3631 int os::sleep(Thread* thread, jlong millis, bool interruptible) { |
3632 assert(thread == Thread::current(), "thread consistency check"); | |
3633 | |
3634 // TODO-FIXME: this should be removed. | |
3635 // On Solaris machines (especially 2.5.1) we found that sometimes the VM gets into a live lock | |
3636 // situation with a JavaThread being starved out of a lwp. The kernel doesn't seem to generate | |
3637 // a SIGWAITING signal which would enable the threads library to create a new lwp for the starving | |
3638 // thread. We suspect that because the Watcher thread keeps waking up at periodic intervals the kernel | |
3639 // is fooled into believing that the system is making progress. In the code below we block the | |
3640 // the watcher thread while safepoint is in progress so that it would not appear as though the | |
3641 // system is making progress. | |
3642 if (!Solaris::T2_libthread() && | |
3643 thread->is_Watcher_thread() && SafepointSynchronize::is_synchronizing() && !Arguments::has_profile()) { | |
3644 // We now try to acquire the threads lock. Since this lock is held by the VM thread during | |
3645 // the entire safepoint, the watcher thread will line up here during the safepoint. | |
3646 Threads_lock->lock_without_safepoint_check(); | |
3647 Threads_lock->unlock(); | |
3648 } | |
3649 | |
3650 if (thread->is_Java_thread()) { | |
3651 // This is a JavaThread so we honor the _thread_blocked protocol | |
3652 // even for sleeps of 0 milliseconds. This was originally done | |
3653 // as a workaround for bug 4338139. However, now we also do it | |
3654 // to honor the suspend-equivalent protocol. | |
3655 | |
3656 JavaThread *jt = (JavaThread *) thread; | |
3657 ThreadBlockInVM tbivm(jt); | |
3658 | |
3659 jt->set_suspend_equivalent(); | |
3660 // cleared by handle_special_suspend_equivalent_condition() or | |
3661 // java_suspend_self() via check_and_wait_while_suspended() | |
3662 | |
3663 int ret_code; | |
3664 if (millis <= 0) { | |
3665 thr_yield(); | |
3666 ret_code = 0; | |
3667 } else { | |
3668 // The original sleep() implementation did not create an | |
3669 // OSThreadWaitState helper for sleeps of 0 milliseconds. | |
3670 // I'm preserving that decision for now. | |
3671 OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */); | |
3672 | |
3673 ret_code = os_sleep(millis, interruptible); | |
3674 } | |
3675 | |
3676 // were we externally suspended while we were waiting? | |
3677 jt->check_and_wait_while_suspended(); | |
3678 | |
3679 return ret_code; | |
3680 } | |
3681 | |
3682 // non-JavaThread from this point on: | |
3683 | |
3684 if (millis <= 0) { | |
3685 thr_yield(); | |
3686 return 0; | |
3687 } | |
3688 | |
3689 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
3690 | |
3691 return os_sleep(millis, interruptible); | |
3692 } | |
3693 | |
3694 int os::naked_sleep() { | |
3695 // %% make the sleep time an integer flag. for now use 1 millisec. | |
3696 return os_sleep(1, false); | |
3697 } | |
3698 | |
3699 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
3700 void os::infinite_sleep() { | |
3701 while (true) { // sleep forever ... | |
3702 ::sleep(100); // ... 100 seconds at a time | |
3703 } | |
3704 } | |
3705 | |
3706 // Used to convert frequent JVM_Yield() to nops | |
3707 bool os::dont_yield() { | |
3708 if (DontYieldALot) { | |
3709 static hrtime_t last_time = 0; | |
3710 hrtime_t diff = getTimeNanos() - last_time; | |
3711 | |
3712 if (diff < DontYieldALotInterval * 1000000) | |
3713 return true; | |
3714 | |
3715 last_time += diff; | |
3716 | |
3717 return false; | |
3718 } | |
3719 else { | |
3720 return false; | |
3721 } | |
3722 } | |
3723 | |
3724 // Caveat: Solaris os::yield() causes a thread-state transition whereas | |
3725 // the linux and win32 implementations do not. This should be checked. | |
3726 | |
3727 void os::yield() { | |
3728 // Yields to all threads with same or greater priority | |
3729 os::sleep(Thread::current(), 0, false); | |
3730 } | |
3731 | |
3732 // Note that yield semantics are defined by the scheduling class to which | |
3733 // the thread currently belongs. Typically, yield will _not yield to | |
3734 // other equal or higher priority threads that reside on the dispatch queues | |
3735 // of other CPUs. | |
3736 | |
3737 os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; } | |
3738 | |
3739 | |
3740 // On Solaris we found that yield_all doesn't always yield to all other threads. | |
3741 // There have been cases where there is a thread ready to execute but it doesn't | |
3742 // get an lwp as the VM thread continues to spin with sleeps of 1 millisecond. | |
3743 // The 1 millisecond wait doesn't seem long enough for the kernel to issue a | |
3744 // SIGWAITING signal which will cause a new lwp to be created. So we count the | |
3745 // number of times yield_all is called in the one loop and increase the sleep | |
3746 // time after 8 attempts. If this fails too we increase the concurrency level | |
3747 // so that the starving thread would get an lwp | |
3748 | |
3749 void os::yield_all(int attempts) { | |
3750 // Yields to all threads, including threads with lower priorities | |
3751 if (attempts == 0) { | |
3752 os::sleep(Thread::current(), 1, false); | |
3753 } else { | |
3754 int iterations = attempts % 30; | |
3755 if (iterations == 0 && !os::Solaris::T2_libthread()) { | |
3756 // thr_setconcurrency and _getconcurrency make sense only under T1. | |
3757 int noofLWPS = thr_getconcurrency(); | |
3758 if (noofLWPS < (Threads::number_of_threads() + 2)) { | |
3759 thr_setconcurrency(thr_getconcurrency() + 1); | |
3760 } | |
3761 } else if (iterations < 25) { | |
3762 os::sleep(Thread::current(), 1, false); | |
3763 } else { | |
3764 os::sleep(Thread::current(), 10, false); | |
3765 } | |
3766 } | |
3767 } | |
3768 | |
3769 // Called from the tight loops to possibly influence time-sharing heuristics | |
3770 void os::loop_breaker(int attempts) { | |
3771 os::yield_all(attempts); | |
3772 } | |
3773 | |
3774 | |
3775 // Interface for setting lwp priorities. If we are using T2 libthread, | |
3776 // which forces the use of BoundThreads or we manually set UseBoundThreads, | |
3777 // all of our threads will be assigned to real lwp's. Using the thr_setprio | |
3778 // function is meaningless in this mode so we must adjust the real lwp's priority | |
3779 // The routines below implement the getting and setting of lwp priorities. | |
3780 // | |
3781 // Note: There are three priority scales used on Solaris. Java priotities | |
3782 // which range from 1 to 10, libthread "thr_setprio" scale which range | |
3783 // from 0 to 127, and the current scheduling class of the process we | |
3784 // are running in. This is typically from -60 to +60. | |
3785 // The setting of the lwp priorities in done after a call to thr_setprio | |
3786 // so Java priorities are mapped to libthread priorities and we map from | |
3787 // the latter to lwp priorities. We don't keep priorities stored in | |
3788 // Java priorities since some of our worker threads want to set priorities | |
3789 // higher than all Java threads. | |
3790 // | |
3791 // For related information: | |
3792 // (1) man -s 2 priocntl | |
3793 // (2) man -s 4 priocntl | |
3794 // (3) man dispadmin | |
3795 // = librt.so | |
3796 // = libthread/common/rtsched.c - thrp_setlwpprio(). | |
3797 // = ps -cL <pid> ... to validate priority. | |
3798 // = sched_get_priority_min and _max | |
3799 // pthread_create | |
3800 // sched_setparam | |
3801 // pthread_setschedparam | |
3802 // | |
3803 // Assumptions: | |
3804 // + We assume that all threads in the process belong to the same | |
3805 // scheduling class. IE. an homogenous process. | |
3806 // + Must be root or in IA group to change change "interactive" attribute. | |
3807 // Priocntl() will fail silently. The only indication of failure is when | |
3808 // we read-back the value and notice that it hasn't changed. | |
3809 // + Interactive threads enter the runq at the head, non-interactive at the tail. | |
3810 // + For RT, change timeslice as well. Invariant: | |
3811 // constant "priority integral" | |
3812 // Konst == TimeSlice * (60-Priority) | |
3813 // Given a priority, compute appropriate timeslice. | |
3814 // + Higher numerical values have higher priority. | |
3815 | |
3816 // sched class attributes | |
3817 typedef struct { | |
3818 int schedPolicy; // classID | |
3819 int maxPrio; | |
3820 int minPrio; | |
3821 } SchedInfo; | |
3822 | |
3823 | |
4854
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|
3824 static SchedInfo tsLimits, iaLimits, rtLimits, fxLimits; |
0 | 3825 |
3826 #ifdef ASSERT | |
3827 static int ReadBackValidate = 1; | |
3828 #endif | |
3829 static int myClass = 0; | |
3830 static int myMin = 0; | |
3831 static int myMax = 0; | |
3832 static int myCur = 0; | |
3833 static bool priocntl_enable = false; | |
3834 | |
4854
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|
3835 static const int criticalPrio = 60; // FX/60 is critical thread class/priority on T4 |
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|
3836 static int java_MaxPriority_to_os_priority = 0; // Saved mapping |
0 | 3837 |
3838 // Call the version of priocntl suitable for all supported versions | |
3839 // of Solaris. We need to call through this wrapper so that we can | |
3840 // build on Solaris 9 and run on Solaris 8, 9 and 10. | |
3841 // | |
3842 // This code should be removed if we ever stop supporting Solaris 8 | |
3843 // and earlier releases. | |
3844 | |
3845 static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg); | |
3846 typedef long (*priocntl_type)(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg); | |
3847 static priocntl_type priocntl_ptr = priocntl_stub; | |
3848 | |
3849 // Stub to set the value of the real pointer, and then call the real | |
3850 // function. | |
3851 | |
3852 static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg) { | |
3853 // Try Solaris 8- name only. | |
3854 priocntl_type tmp = (priocntl_type)dlsym(RTLD_DEFAULT, "__priocntl"); | |
3855 guarantee(tmp != NULL, "priocntl function not found."); | |
3856 priocntl_ptr = tmp; | |
3857 return (*priocntl_ptr)(PC_VERSION, idtype, id, cmd, arg); | |
3858 } | |
3859 | |
3860 | |
3861 // lwp_priocntl_init | |
3862 // | |
3863 // Try to determine the priority scale for our process. | |
3864 // | |
3865 // Return errno or 0 if OK. | |
3866 // | |
3867 static | |
3868 int lwp_priocntl_init () | |
3869 { | |
3870 int rslt; | |
3871 pcinfo_t ClassInfo; | |
3872 pcparms_t ParmInfo; | |
3873 int i; | |
3874 | |
3875 if (!UseThreadPriorities) return 0; | |
3876 | |
3877 // We are using Bound threads, we need to determine our priority ranges | |
3878 if (os::Solaris::T2_libthread() || UseBoundThreads) { | |
3879 // If ThreadPriorityPolicy is 1, switch tables | |
3880 if (ThreadPriorityPolicy == 1) { | |
4854
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|
3881 for (i = 0 ; i < CriticalPriority+1; i++) |
0 | 3882 os::java_to_os_priority[i] = prio_policy1[i]; |
3883 } | |
4854
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|
3884 if (UseCriticalJavaThreadPriority) { |
de268c8a8075
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3885 // MaxPriority always maps to the FX scheduling class and criticalPrio. |
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|
3886 // See set_native_priority() and set_lwp_class_and_priority(). |
de268c8a8075
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3887 // Save original MaxPriority mapping in case attempt to |
de268c8a8075
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|
3888 // use critical priority fails. |
de268c8a8075
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|
3889 java_MaxPriority_to_os_priority = os::java_to_os_priority[MaxPriority]; |
de268c8a8075
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|
3890 // Set negative to distinguish from other priorities |
de268c8a8075
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|
3891 os::java_to_os_priority[MaxPriority] = -criticalPrio; |
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|
3892 } |
0 | 3893 } |
3894 // Not using Bound Threads, set to ThreadPolicy 1 | |
3895 else { | |
4854
de268c8a8075
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|
3896 for ( i = 0 ; i < CriticalPriority+1; i++ ) { |
0 | 3897 os::java_to_os_priority[i] = prio_policy1[i]; |
3898 } | |
3899 return 0; | |
3900 } | |
3901 | |
3902 // Get IDs for a set of well-known scheduling classes. | |
3903 // TODO-FIXME: GETCLINFO returns the current # of classes in the | |
3904 // the system. We should have a loop that iterates over the | |
3905 // classID values, which are known to be "small" integers. | |
3906 | |
3907 strcpy(ClassInfo.pc_clname, "TS"); | |
3908 ClassInfo.pc_cid = -1; | |
3909 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); | |
3910 if (rslt < 0) return errno; | |
3911 assert(ClassInfo.pc_cid != -1, "cid for TS class is -1"); | |
3912 tsLimits.schedPolicy = ClassInfo.pc_cid; | |
3913 tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri; | |
3914 tsLimits.minPrio = -tsLimits.maxPrio; | |
3915 | |
3916 strcpy(ClassInfo.pc_clname, "IA"); | |
3917 ClassInfo.pc_cid = -1; | |
3918 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); | |
3919 if (rslt < 0) return errno; | |
3920 assert(ClassInfo.pc_cid != -1, "cid for IA class is -1"); | |
3921 iaLimits.schedPolicy = ClassInfo.pc_cid; | |
3922 iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri; | |
3923 iaLimits.minPrio = -iaLimits.maxPrio; | |
3924 | |
3925 strcpy(ClassInfo.pc_clname, "RT"); | |
3926 ClassInfo.pc_cid = -1; | |
3927 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); | |
3928 if (rslt < 0) return errno; | |
3929 assert(ClassInfo.pc_cid != -1, "cid for RT class is -1"); | |
3930 rtLimits.schedPolicy = ClassInfo.pc_cid; | |
3931 rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri; | |
3932 rtLimits.minPrio = 0; | |
3933 | |
4854
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|
3934 strcpy(ClassInfo.pc_clname, "FX"); |
de268c8a8075
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3935 ClassInfo.pc_cid = -1; |
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|
3936 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
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|
3937 if (rslt < 0) return errno; |
de268c8a8075
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|
3938 assert(ClassInfo.pc_cid != -1, "cid for FX class is -1"); |
de268c8a8075
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|
3939 fxLimits.schedPolicy = ClassInfo.pc_cid; |
de268c8a8075
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|
3940 fxLimits.maxPrio = ((fxinfo_t*)ClassInfo.pc_clinfo)->fx_maxupri; |
de268c8a8075
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|
3941 fxLimits.minPrio = 0; |
0 | 3942 |
3943 // Query our "current" scheduling class. | |
4854
de268c8a8075
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|
3944 // This will normally be IA, TS or, rarely, FX or RT. |
de268c8a8075
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|
3945 memset(&ParmInfo, 0, sizeof(ParmInfo)); |
0 | 3946 ParmInfo.pc_cid = PC_CLNULL; |
4854
de268c8a8075
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|
3947 rslt = (*priocntl_ptr) (PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
de268c8a8075
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|
3948 if (rslt < 0) return errno; |
0 | 3949 myClass = ParmInfo.pc_cid; |
3950 | |
3951 // We now know our scheduling classId, get specific information | |
4854
de268c8a8075
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|
3952 // about the class. |
0 | 3953 ClassInfo.pc_cid = myClass; |
3954 ClassInfo.pc_clname[0] = 0; | |
4854
de268c8a8075
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|
3955 rslt = (*priocntl_ptr) (PC_VERSION, (idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo); |
de268c8a8075
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|
3956 if (rslt < 0) return errno; |
de268c8a8075
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|
3957 |
de268c8a8075
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|
3958 if (ThreadPriorityVerbose) { |
de268c8a8075
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|
3959 tty->print_cr("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname); |
de268c8a8075
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|
3960 } |
0 | 3961 |
3962 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
3963 ParmInfo.pc_cid = PC_CLNULL; | |
3964 rslt = (*priocntl_ptr)(PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); | |
3965 if (rslt < 0) return errno; | |
3966 | |
3967 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
3968 myMin = rtLimits.minPrio; | |
3969 myMax = rtLimits.maxPrio; | |
3970 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
3971 iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms; | |
3972 myMin = iaLimits.minPrio; | |
3973 myMax = iaLimits.maxPrio; | |
3974 myMax = MIN2(myMax, (int)iaInfo->ia_uprilim); // clamp - restrict | |
3975 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
3976 tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms; | |
3977 myMin = tsLimits.minPrio; | |
3978 myMax = tsLimits.maxPrio; | |
3979 myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict | |
4854
de268c8a8075
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|
3980 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
de268c8a8075
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diff
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|
3981 fxparms_t *fxInfo = (fxparms_t*)ParmInfo.pc_clparms; |
de268c8a8075
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diff
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|
3982 myMin = fxLimits.minPrio; |
de268c8a8075
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phh
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diff
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|
3983 myMax = fxLimits.maxPrio; |
de268c8a8075
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phh
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|
3984 myMax = MIN2(myMax, (int)fxInfo->fx_uprilim); // clamp - restrict |
0 | 3985 } else { |
3986 // No clue - punt | |
3987 if (ThreadPriorityVerbose) | |
3988 tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname); | |
3989 return EINVAL; // no clue, punt | |
3990 } | |
3991 | |
4854
de268c8a8075
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phh
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4803
diff
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|
3992 if (ThreadPriorityVerbose) { |
de268c8a8075
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|
3993 tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax); |
de268c8a8075
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|
3994 } |
0 | 3995 |
3996 priocntl_enable = true; // Enable changing priorities | |
3997 return 0; | |
3998 } | |
3999 | |
4000 #define IAPRI(x) ((iaparms_t *)((x).pc_clparms)) | |
4001 #define RTPRI(x) ((rtparms_t *)((x).pc_clparms)) | |
4002 #define TSPRI(x) ((tsparms_t *)((x).pc_clparms)) | |
4854
de268c8a8075
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|
4003 #define FXPRI(x) ((fxparms_t *)((x).pc_clparms)) |
0 | 4004 |
4005 | |
4006 // scale_to_lwp_priority | |
4007 // | |
4008 // Convert from the libthread "thr_setprio" scale to our current | |
4009 // lwp scheduling class scale. | |
4010 // | |
4011 static | |
4012 int scale_to_lwp_priority (int rMin, int rMax, int x) | |
4013 { | |
4014 int v; | |
4015 | |
4016 if (x == 127) return rMax; // avoid round-down | |
4017 v = (((x*(rMax-rMin)))/128)+rMin; | |
4018 return v; | |
4019 } | |
4020 | |
4021 | |
4854
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|
4022 // set_lwp_class_and_priority |
0 | 4023 // |
4854
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|
4024 // Set the class and priority of the lwp. This call should only |
de268c8a8075
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|
4025 // be made when using bound threads (T2 threads are bound by default). |
0 | 4026 // |
4854
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changeset
|
4027 int set_lwp_class_and_priority(int ThreadID, int lwpid, |
de268c8a8075
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|
4028 int newPrio, int new_class, bool scale) { |
0 | 4029 int rslt; |
4030 int Actual, Expected, prv; | |
4031 pcparms_t ParmInfo; // for GET-SET | |
4032 #ifdef ASSERT | |
4033 pcparms_t ReadBack; // for readback | |
4034 #endif | |
4035 | |
4036 // Set priority via PC_GETPARMS, update, PC_SETPARMS | |
4037 // Query current values. | |
4038 // TODO: accelerate this by eliminating the PC_GETPARMS call. | |
4039 // Cache "pcparms_t" in global ParmCache. | |
4040 // TODO: elide set-to-same-value | |
4041 | |
4042 // If something went wrong on init, don't change priorities. | |
4043 if ( !priocntl_enable ) { | |
4044 if (ThreadPriorityVerbose) | |
4045 tty->print_cr("Trying to set priority but init failed, ignoring"); | |
4046 return EINVAL; | |
4047 } | |
4048 | |
4049 // If lwp hasn't started yet, just return | |
4050 // the _start routine will call us again. | |
4051 if ( lwpid <= 0 ) { | |
4052 if (ThreadPriorityVerbose) { | |
4854
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|
4053 tty->print_cr ("deferring the set_lwp_class_and_priority of thread " |
de268c8a8075
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|
4054 INTPTR_FORMAT " to %d, lwpid not set", |
0 | 4055 ThreadID, newPrio); |
4056 } | |
4057 return 0; | |
4058 } | |
4059 | |
4060 if (ThreadPriorityVerbose) { | |
4854
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|
4061 tty->print_cr ("set_lwp_class_and_priority(" |
de268c8a8075
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|
4062 INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ", |
0 | 4063 ThreadID, lwpid, newPrio); |
4064 } | |
4065 | |
4066 memset(&ParmInfo, 0, sizeof(pcparms_t)); | |
4067 ParmInfo.pc_cid = PC_CLNULL; | |
4068 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo); | |
4069 if (rslt < 0) return errno; | |
4070 | |
4854
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|
4071 int cur_class = ParmInfo.pc_cid; |
de268c8a8075
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|
4072 ParmInfo.pc_cid = (id_t)new_class; |
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|
4073 |
de268c8a8075
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|
4074 if (new_class == rtLimits.schedPolicy) { |
0 | 4075 rtparms_t *rtInfo = (rtparms_t*)ParmInfo.pc_clparms; |
4854
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|
4076 rtInfo->rt_pri = scale ? scale_to_lwp_priority(rtLimits.minPrio, |
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|
4077 rtLimits.maxPrio, newPrio) |
de268c8a8075
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|
4078 : newPrio; |
0 | 4079 rtInfo->rt_tqsecs = RT_NOCHANGE; |
4080 rtInfo->rt_tqnsecs = RT_NOCHANGE; | |
4081 if (ThreadPriorityVerbose) { | |
4082 tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri); | |
4083 } | |
4854
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|
4084 } else if (new_class == iaLimits.schedPolicy) { |
de268c8a8075
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changeset
|
4085 iaparms_t* iaInfo = (iaparms_t*)ParmInfo.pc_clparms; |
de268c8a8075
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|
4086 int maxClamped = MIN2(iaLimits.maxPrio, |
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|
4087 cur_class == new_class |
de268c8a8075
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|
4088 ? (int)iaInfo->ia_uprilim : iaLimits.maxPrio); |
de268c8a8075
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|
4089 iaInfo->ia_upri = scale ? scale_to_lwp_priority(iaLimits.minPrio, |
de268c8a8075
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|
4090 maxClamped, newPrio) |
de268c8a8075
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|
4091 : newPrio; |
de268c8a8075
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|
4092 iaInfo->ia_uprilim = cur_class == new_class |
de268c8a8075
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|
4093 ? IA_NOCHANGE : (pri_t)iaLimits.maxPrio; |
0 | 4094 iaInfo->ia_mode = IA_NOCHANGE; |
4095 if (ThreadPriorityVerbose) { | |
4854
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|
4096 tty->print_cr("IA: [%d...%d] %d->%d\n", |
de268c8a8075
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|
4097 iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri); |
0 | 4098 } |
4854
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phh
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|
4099 } else if (new_class == tsLimits.schedPolicy) { |
de268c8a8075
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phh
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changeset
|
4100 tsparms_t* tsInfo = (tsparms_t*)ParmInfo.pc_clparms; |
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|
4101 int maxClamped = MIN2(tsLimits.maxPrio, |
de268c8a8075
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phh
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|
4102 cur_class == new_class |
de268c8a8075
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|
4103 ? (int)tsInfo->ts_uprilim : tsLimits.maxPrio); |
de268c8a8075
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phh
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|
4104 tsInfo->ts_upri = scale ? scale_to_lwp_priority(tsLimits.minPrio, |
de268c8a8075
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|
4105 maxClamped, newPrio) |
de268c8a8075
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|
4106 : newPrio; |
de268c8a8075
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phh
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|
4107 tsInfo->ts_uprilim = cur_class == new_class |
de268c8a8075
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phh
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|
4108 ? TS_NOCHANGE : (pri_t)tsLimits.maxPrio; |
0 | 4109 if (ThreadPriorityVerbose) { |
4854
de268c8a8075
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phh
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|
4110 tty->print_cr("TS: [%d...%d] %d->%d\n", |
de268c8a8075
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phh
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|
4111 tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri); |
0 | 4112 } |
4854
de268c8a8075
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phh
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|
4113 } else if (new_class == fxLimits.schedPolicy) { |
de268c8a8075
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phh
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changeset
|
4114 fxparms_t* fxInfo = (fxparms_t*)ParmInfo.pc_clparms; |
de268c8a8075
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phh
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|
4115 int maxClamped = MIN2(fxLimits.maxPrio, |
de268c8a8075
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phh
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4803
diff
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|
4116 cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
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|
4117 ? (int)fxInfo->fx_uprilim : fxLimits.maxPrio); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
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changeset
|
4118 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
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4803
diff
changeset
|
4119 maxClamped, newPrio) |
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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|
4120 : newPrio; |
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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|
4121 fxInfo->fx_uprilim = cur_class == new_class |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4122 ? FX_NOCHANGE : (pri_t)fxLimits.maxPrio; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4123 fxInfo->fx_tqsecs = FX_NOCHANGE; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4124 fxInfo->fx_tqnsecs = FX_NOCHANGE; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4125 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4126 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
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4803
diff
changeset
|
4127 fxLimits.minPrio, maxClamped, newPrio, fxInfo->fx_upri); |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4128 } |
0 | 4129 } else { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4130 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4131 tty->print_cr("Unknown new scheduling class %d\n", new_class); |
0 | 4132 } |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4803
diff
changeset
|
4133 return EINVAL; // no clue, punt |
0 | 4134 } |
4135 | |
4136 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo); | |
4137 if (ThreadPriorityVerbose && rslt) { | |
4138 tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno); | |
4139 } | |
4140 if (rslt < 0) return errno; | |
4141 | |
4142 #ifdef ASSERT | |
4143 // Sanity check: read back what we just attempted to set. | |
4144 // In theory it could have changed in the interim ... | |
4145 // | |
4146 // The priocntl system call is tricky. | |
4147 // Sometimes it'll validate the priority value argument and | |
4148 // return EINVAL if unhappy. At other times it fails silently. | |
4149 // Readbacks are prudent. | |
4150 | |
4151 if (!ReadBackValidate) return 0; | |
4152 | |
4153 memset(&ReadBack, 0, sizeof(pcparms_t)); | |
4154 ReadBack.pc_cid = PC_CLNULL; | |
4155 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack); | |
4156 assert(rslt >= 0, "priocntl failed"); | |
4157 Actual = Expected = 0xBAD; | |
4158 assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match"); | |
4159 if (ParmInfo.pc_cid == rtLimits.schedPolicy) { | |
4160 Actual = RTPRI(ReadBack)->rt_pri; | |
4161 Expected = RTPRI(ParmInfo)->rt_pri; | |
4162 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { | |
4163 Actual = IAPRI(ReadBack)->ia_upri; | |
4164 Expected = IAPRI(ParmInfo)->ia_upri; | |
4165 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { | |
4166 Actual = TSPRI(ReadBack)->ts_upri; | |
4167 Expected = TSPRI(ParmInfo)->ts_upri; | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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changeset
|
4168 } else if (ParmInfo.pc_cid == fxLimits.schedPolicy) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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|
4169 Actual = FXPRI(ReadBack)->fx_upri; |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
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|
4170 Expected = FXPRI(ParmInfo)->fx_upri; |
0 | 4171 } else { |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4172 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4173 tty->print_cr("set_lwp_class_and_priority: unexpected class in readback: %d\n", |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4174 ParmInfo.pc_cid); |
0 | 4175 } |
4176 } | |
4177 | |
4178 if (Actual != Expected) { | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4179 if (ThreadPriorityVerbose) { |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4180 tty->print_cr ("set_lwp_class_and_priority(%d %d) Class=%d: actual=%d vs expected=%d\n", |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4181 lwpid, newPrio, ReadBack.pc_cid, Actual, Expected); |
0 | 4182 } |
4183 } | |
4184 #endif | |
4185 | |
4186 return 0; | |
4187 } | |
4188 | |
4189 // Solaris only gives access to 128 real priorities at a time, | |
4190 // so we expand Java's ten to fill this range. This would be better | |
4191 // if we dynamically adjusted relative priorities. | |
4192 // | |
4193 // The ThreadPriorityPolicy option allows us to select 2 different | |
4194 // priority scales. | |
4195 // | |
4196 // ThreadPriorityPolicy=0 | |
4197 // Since the Solaris' default priority is MaximumPriority, we do not | |
4198 // set a priority lower than Max unless a priority lower than | |
4199 // NormPriority is requested. | |
4200 // | |
4201 // ThreadPriorityPolicy=1 | |
4202 // This mode causes the priority table to get filled with | |
4203 // linear values. NormPriority get's mapped to 50% of the | |
4204 // Maximum priority an so on. This will cause VM threads | |
4205 // to get unfair treatment against other Solaris processes | |
4206 // which do not explicitly alter their thread priorities. | |
4207 // | |
4208 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4209 int os::java_to_os_priority[CriticalPriority + 1] = { |
0 | 4210 -99999, // 0 Entry should never be used |
4211 | |
4212 0, // 1 MinPriority | |
4213 32, // 2 | |
4214 64, // 3 | |
4215 | |
4216 96, // 4 | |
4217 127, // 5 NormPriority | |
4218 127, // 6 | |
4219 | |
4220 127, // 7 | |
4221 127, // 8 | |
4222 127, // 9 NearMaxPriority | |
4223 | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4224 127, // 10 MaxPriority |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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changeset
|
4225 |
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4226 -criticalPrio // 11 CriticalPriority |
0 | 4227 }; |
4228 | |
4229 OSReturn os::set_native_priority(Thread* thread, int newpri) { | |
4854
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4230 OSThread* osthread = thread->osthread(); |
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4231 |
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4232 // Save requested priority in case the thread hasn't been started |
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4233 osthread->set_native_priority(newpri); |
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4234 |
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4235 // Check for critical priority request |
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4236 bool fxcritical = false; |
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4237 if (newpri == -criticalPrio) { |
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4238 fxcritical = true; |
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4239 newpri = criticalPrio; |
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4240 } |
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4241 |
0 | 4242 assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping"); |
4854
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4243 if (!UseThreadPriorities) return OS_OK; |
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4244 |
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4245 int status = 0; |
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4246 |
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4247 if (!fxcritical) { |
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4248 // Use thr_setprio only if we have a priority that thr_setprio understands |
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4249 status = thr_setprio(thread->osthread()->thread_id(), newpri); |
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4250 } |
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4251 |
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4252 if (os::Solaris::T2_libthread() || |
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4253 (UseBoundThreads && osthread->is_vm_created())) { |
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4254 int lwp_status = |
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4255 set_lwp_class_and_priority(osthread->thread_id(), |
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4256 osthread->lwp_id(), |
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4257 newpri, |
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4258 fxcritical ? fxLimits.schedPolicy : myClass, |
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4259 !fxcritical); |
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4260 if (lwp_status != 0 && fxcritical) { |
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4261 // Try again, this time without changing the scheduling class |
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4262 newpri = java_MaxPriority_to_os_priority; |
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4263 lwp_status = set_lwp_class_and_priority(osthread->thread_id(), |
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4264 osthread->lwp_id(), |
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4265 newpri, myClass, false); |
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4266 } |
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4267 status |= lwp_status; |
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4268 } |
0 | 4269 return (status == 0) ? OS_OK : OS_ERR; |
4270 } | |
4271 | |
4272 | |
4273 OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) { | |
4274 int p; | |
4275 if ( !UseThreadPriorities ) { | |
4276 *priority_ptr = NormalPriority; | |
4277 return OS_OK; | |
4278 } | |
4279 int status = thr_getprio(thread->osthread()->thread_id(), &p); | |
4280 if (status != 0) { | |
4281 return OS_ERR; | |
4282 } | |
4283 *priority_ptr = p; | |
4284 return OS_OK; | |
4285 } | |
4286 | |
4287 | |
4288 // Hint to the underlying OS that a task switch would not be good. | |
4289 // Void return because it's a hint and can fail. | |
4290 void os::hint_no_preempt() { | |
4291 schedctl_start(schedctl_init()); | |
4292 } | |
4293 | |
10405 | 4294 static void resume_clear_context(OSThread *osthread) { |
4295 osthread->set_ucontext(NULL); | |
4296 } | |
4297 | |
4298 static void suspend_save_context(OSThread *osthread, ucontext_t* context) { | |
4299 osthread->set_ucontext(context); | |
4300 } | |
4301 | |
4302 static Semaphore sr_semaphore; | |
4303 | |
4304 void os::Solaris::SR_handler(Thread* thread, ucontext_t* uc) { | |
4305 // Save and restore errno to avoid confusing native code with EINTR | |
4306 // after sigsuspend. | |
4307 int old_errno = errno; | |
4308 | |
4309 OSThread* osthread = thread->osthread(); | |
4310 assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread"); | |
4311 | |
4312 os::SuspendResume::State current = osthread->sr.state(); | |
4313 if (current == os::SuspendResume::SR_SUSPEND_REQUEST) { | |
4314 suspend_save_context(osthread, uc); | |
4315 | |
4316 // attempt to switch the state, we assume we had a SUSPEND_REQUEST | |
4317 os::SuspendResume::State state = osthread->sr.suspended(); | |
4318 if (state == os::SuspendResume::SR_SUSPENDED) { | |
4319 sigset_t suspend_set; // signals for sigsuspend() | |
4320 | |
4321 // get current set of blocked signals and unblock resume signal | |
4322 thr_sigsetmask(SIG_BLOCK, NULL, &suspend_set); | |
4323 sigdelset(&suspend_set, os::Solaris::SIGasync()); | |
4324 | |
4325 sr_semaphore.signal(); | |
4326 // wait here until we are resumed | |
4327 while (1) { | |
4328 sigsuspend(&suspend_set); | |
4329 | |
4330 os::SuspendResume::State result = osthread->sr.running(); | |
4331 if (result == os::SuspendResume::SR_RUNNING) { | |
4332 sr_semaphore.signal(); | |
4333 break; | |
4334 } | |
4335 } | |
4336 | |
4337 } else if (state == os::SuspendResume::SR_RUNNING) { | |
4338 // request was cancelled, continue | |
4339 } else { | |
4340 ShouldNotReachHere(); | |
4341 } | |
4342 | |
4343 resume_clear_context(osthread); | |
4344 } else if (current == os::SuspendResume::SR_RUNNING) { | |
4345 // request was cancelled, continue | |
4346 } else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4347 // ignore | |
4348 } else { | |
4349 // ignore | |
4350 } | |
4351 | |
4352 errno = old_errno; | |
4353 } | |
4354 | |
4355 | |
0 | 4356 void os::interrupt(Thread* thread) { |
4357 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
4358 | |
4359 OSThread* osthread = thread->osthread(); | |
4360 | |
4361 int isInterrupted = osthread->interrupted(); | |
4362 if (!isInterrupted) { | |
4363 osthread->set_interrupted(true); | |
4364 OrderAccess::fence(); | |
4365 // os::sleep() is implemented with either poll (NULL,0,timeout) or | |
4366 // by parking on _SleepEvent. If the former, thr_kill will unwedge | |
4367 // the sleeper by SIGINTR, otherwise the unpark() will wake the sleeper. | |
4368 ParkEvent * const slp = thread->_SleepEvent ; | |
4369 if (slp != NULL) slp->unpark() ; | |
4370 } | |
4371 | |
4372 // For JSR166: unpark after setting status but before thr_kill -dl | |
4373 if (thread->is_Java_thread()) { | |
4374 ((JavaThread*)thread)->parker()->unpark(); | |
4375 } | |
4376 | |
4377 // Handle interruptible wait() ... | |
4378 ParkEvent * const ev = thread->_ParkEvent ; | |
4379 if (ev != NULL) ev->unpark() ; | |
4380 | |
4381 // When events are used everywhere for os::sleep, then this thr_kill | |
4382 // will only be needed if UseVMInterruptibleIO is true. | |
4383 | |
4384 if (!isInterrupted) { | |
4385 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGinterrupt()); | |
4386 assert_status(status == 0, status, "thr_kill"); | |
4387 | |
4388 // Bump thread interruption counter | |
4389 RuntimeService::record_thread_interrupt_signaled_count(); | |
4390 } | |
4391 } | |
4392 | |
4393 | |
4394 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
4395 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); | |
4396 | |
4397 OSThread* osthread = thread->osthread(); | |
4398 | |
4399 bool res = osthread->interrupted(); | |
4400 | |
4401 // NOTE that since there is no "lock" around these two operations, | |
4402 // there is the possibility that the interrupted flag will be | |
4403 // "false" but that the interrupt event will be set. This is | |
4404 // intentional. The effect of this is that Object.wait() will appear | |
4405 // to have a spurious wakeup, which is not harmful, and the | |
4406 // possibility is so rare that it is not worth the added complexity | |
4407 // to add yet another lock. It has also been recommended not to put | |
4408 // the interrupted flag into the os::Solaris::Event structure, | |
4409 // because it hides the issue. | |
4410 if (res && clear_interrupted) { | |
4411 osthread->set_interrupted(false); | |
4412 } | |
4413 return res; | |
4414 } | |
4415 | |
4416 | |
4417 void os::print_statistics() { | |
4418 } | |
4419 | |
4420 int os::message_box(const char* title, const char* message) { | |
4421 int i; | |
4422 fdStream err(defaultStream::error_fd()); | |
4423 for (i = 0; i < 78; i++) err.print_raw("="); | |
4424 err.cr(); | |
4425 err.print_raw_cr(title); | |
4426 for (i = 0; i < 78; i++) err.print_raw("-"); | |
4427 err.cr(); | |
4428 err.print_raw_cr(message); | |
4429 for (i = 0; i < 78; i++) err.print_raw("="); | |
4430 err.cr(); | |
4431 | |
4432 char buf[16]; | |
4433 // Prevent process from exiting upon "read error" without consuming all CPU | |
4434 while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } | |
4435 | |
4436 return buf[0] == 'y' || buf[0] == 'Y'; | |
4437 } | |
4438 | |
10405 | 4439 static int sr_notify(OSThread* osthread) { |
4440 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGasync()); | |
4441 assert_status(status == 0, status, "thr_kill"); | |
4442 return status; | |
4443 } | |
4444 | |
4445 // "Randomly" selected value for how long we want to spin | |
4446 // before bailing out on suspending a thread, also how often | |
4447 // we send a signal to a thread we want to resume | |
4448 static const int RANDOMLY_LARGE_INTEGER = 1000000; | |
4449 static const int RANDOMLY_LARGE_INTEGER2 = 100; | |
4450 | |
4451 static bool do_suspend(OSThread* osthread) { | |
4452 assert(osthread->sr.is_running(), "thread should be running"); | |
4453 assert(!sr_semaphore.trywait(), "semaphore has invalid state"); | |
4454 | |
4455 // mark as suspended and send signal | |
4456 if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) { | |
4457 // failed to switch, state wasn't running? | |
4458 ShouldNotReachHere(); | |
4459 return false; | |
4460 } | |
4461 | |
4462 if (sr_notify(osthread) != 0) { | |
4463 ShouldNotReachHere(); | |
4464 } | |
4465 | |
4466 // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED | |
4467 while (true) { | |
4468 if (sr_semaphore.timedwait(0, 2000 * NANOSECS_PER_MILLISEC)) { | |
4469 break; | |
4470 } else { | |
4471 // timeout | |
4472 os::SuspendResume::State cancelled = osthread->sr.cancel_suspend(); | |
4473 if (cancelled == os::SuspendResume::SR_RUNNING) { | |
4474 return false; | |
4475 } else if (cancelled == os::SuspendResume::SR_SUSPENDED) { | |
4476 // make sure that we consume the signal on the semaphore as well | |
4477 sr_semaphore.wait(); | |
4478 break; | |
4479 } else { | |
4480 ShouldNotReachHere(); | |
4481 return false; | |
4482 } | |
4483 } | |
4484 } | |
4485 | |
4486 guarantee(osthread->sr.is_suspended(), "Must be suspended"); | |
4487 return true; | |
4488 } | |
4489 | |
4490 static void do_resume(OSThread* osthread) { | |
4491 assert(osthread->sr.is_suspended(), "thread should be suspended"); | |
4492 assert(!sr_semaphore.trywait(), "invalid semaphore state"); | |
4493 | |
4494 if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) { | |
4495 // failed to switch to WAKEUP_REQUEST | |
4496 ShouldNotReachHere(); | |
4497 return; | |
4498 } | |
4499 | |
4500 while (true) { | |
4501 if (sr_notify(osthread) == 0) { | |
4502 if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { | |
4503 if (osthread->sr.is_running()) { | |
4504 return; | |
4505 } | |
4506 } | |
4507 } else { | |
4508 ShouldNotReachHere(); | |
4509 } | |
4510 } | |
4511 | |
4512 guarantee(osthread->sr.is_running(), "Must be running!"); | |
4513 } | |
4514 | |
4515 void os::SuspendedThreadTask::internal_do_task() { | |
4516 if (do_suspend(_thread->osthread())) { | |
4517 SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext()); | |
4518 do_task(context); | |
4519 do_resume(_thread->osthread()); | |
4520 } | |
4521 } | |
4522 | |
4523 class PcFetcher : public os::SuspendedThreadTask { | |
4524 public: | |
4525 PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {} | |
4526 ExtendedPC result(); | |
4527 protected: | |
4528 void do_task(const os::SuspendedThreadTaskContext& context); | |
4529 private: | |
4530 ExtendedPC _epc; | |
4531 }; | |
4532 | |
4533 ExtendedPC PcFetcher::result() { | |
4534 guarantee(is_done(), "task is not done yet."); | |
4535 return _epc; | |
4536 } | |
4537 | |
4538 void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) { | |
4539 Thread* thread = context.thread(); | |
4540 OSThread* osthread = thread->osthread(); | |
4541 if (osthread->ucontext() != NULL) { | |
4542 _epc = os::Solaris::ucontext_get_pc((ucontext_t *) context.ucontext()); | |
4543 } else { | |
4544 // NULL context is unexpected, double-check this is the VMThread | |
4545 guarantee(thread->is_VM_thread(), "can only be called for VMThread"); | |
4546 } | |
4547 } | |
4548 | |
0 | 4549 // A lightweight implementation that does not suspend the target thread and |
4550 // thus returns only a hint. Used for profiling only! | |
4551 ExtendedPC os::get_thread_pc(Thread* thread) { | |
4552 // Make sure that it is called by the watcher and the Threads lock is owned. | |
4553 assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock"); | |
4554 // For now, is only used to profile the VM Thread | |
4555 assert(thread->is_VM_thread(), "Can only be called for VMThread"); | |
10405 | 4556 PcFetcher fetcher(thread); |
4557 fetcher.run(); | |
4558 return fetcher.result(); | |
0 | 4559 } |
4560 | |
4561 | |
4562 // This does not do anything on Solaris. This is basically a hook for being | |
4563 // able to use structured exception handling (thread-local exception filters) on, e.g., Win32. | |
4564 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) { | |
4565 f(value, method, args, thread); | |
4566 } | |
4567 | |
4568 // This routine may be used by user applications as a "hook" to catch signals. | |
4569 // The user-defined signal handler must pass unrecognized signals to this | |
4570 // routine, and if it returns true (non-zero), then the signal handler must | |
4571 // return immediately. If the flag "abort_if_unrecognized" is true, then this | |
4572 // routine will never retun false (zero), but instead will execute a VM panic | |
4573 // routine kill the process. | |
4574 // | |
4575 // If this routine returns false, it is OK to call it again. This allows | |
4576 // the user-defined signal handler to perform checks either before or after | |
4577 // the VM performs its own checks. Naturally, the user code would be making | |
4578 // a serious error if it tried to handle an exception (such as a null check | |
4579 // or breakpoint) that the VM was generating for its own correct operation. | |
4580 // | |
4581 // This routine may recognize any of the following kinds of signals: | |
4582 // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ, | |
4583 // os::Solaris::SIGasync | |
4584 // It should be consulted by handlers for any of those signals. | |
4585 // It explicitly does not recognize os::Solaris::SIGinterrupt | |
4586 // | |
4587 // The caller of this routine must pass in the three arguments supplied | |
4588 // to the function referred to in the "sa_sigaction" (not the "sa_handler") | |
4589 // field of the structure passed to sigaction(). This routine assumes that | |
4590 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. | |
4591 // | |
4592 // Note that the VM will print warnings if it detects conflicting signal | |
4593 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". | |
4594 // | |
2191 | 4595 extern "C" JNIEXPORT int |
4596 JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, | |
4597 int abort_if_unrecognized); | |
0 | 4598 |
4599 | |
4600 void signalHandler(int sig, siginfo_t* info, void* ucVoid) { | |
8067 | 4601 int orig_errno = errno; // Preserve errno value over signal handler. |
0 | 4602 JVM_handle_solaris_signal(sig, info, ucVoid, true); |
8067 | 4603 errno = orig_errno; |
0 | 4604 } |
4605 | |
4606 /* Do not delete - if guarantee is ever removed, a signal handler (even empty) | |
4607 is needed to provoke threads blocked on IO to return an EINTR | |
4608 Note: this explicitly does NOT call JVM_handle_solaris_signal and | |
4609 does NOT participate in signal chaining due to requirement for | |
4610 NOT setting SA_RESTART to make EINTR work. */ | |
4611 extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) { | |
4612 if (UseSignalChaining) { | |
4613 struct sigaction *actp = os::Solaris::get_chained_signal_action(sig); | |
4614 if (actp && actp->sa_handler) { | |
4615 vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs"); | |
4616 } | |
4617 } | |
4618 } | |
4619 | |
4620 // This boolean allows users to forward their own non-matching signals | |
4621 // to JVM_handle_solaris_signal, harmlessly. | |
4622 bool os::Solaris::signal_handlers_are_installed = false; | |
4623 | |
4624 // For signal-chaining | |
4625 bool os::Solaris::libjsig_is_loaded = false; | |
4626 typedef struct sigaction *(*get_signal_t)(int); | |
4627 get_signal_t os::Solaris::get_signal_action = NULL; | |
4628 | |
4629 struct sigaction* os::Solaris::get_chained_signal_action(int sig) { | |
4630 struct sigaction *actp = NULL; | |
4631 | |
4632 if ((libjsig_is_loaded) && (sig <= Maxlibjsigsigs)) { | |
4633 // Retrieve the old signal handler from libjsig | |
4634 actp = (*get_signal_action)(sig); | |
4635 } | |
4636 if (actp == NULL) { | |
4637 // Retrieve the preinstalled signal handler from jvm | |
4638 actp = get_preinstalled_handler(sig); | |
4639 } | |
4640 | |
4641 return actp; | |
4642 } | |
4643 | |
4644 static bool call_chained_handler(struct sigaction *actp, int sig, | |
4645 siginfo_t *siginfo, void *context) { | |
4646 // Call the old signal handler | |
4647 if (actp->sa_handler == SIG_DFL) { | |
4648 // It's more reasonable to let jvm treat it as an unexpected exception | |
4649 // instead of taking the default action. | |
4650 return false; | |
4651 } else if (actp->sa_handler != SIG_IGN) { | |
4652 if ((actp->sa_flags & SA_NODEFER) == 0) { | |
4653 // automaticlly block the signal | |
4654 sigaddset(&(actp->sa_mask), sig); | |
4655 } | |
4656 | |
4657 sa_handler_t hand; | |
4658 sa_sigaction_t sa; | |
4659 bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; | |
4660 // retrieve the chained handler | |
4661 if (siginfo_flag_set) { | |
4662 sa = actp->sa_sigaction; | |
4663 } else { | |
4664 hand = actp->sa_handler; | |
4665 } | |
4666 | |
4667 if ((actp->sa_flags & SA_RESETHAND) != 0) { | |
4668 actp->sa_handler = SIG_DFL; | |
4669 } | |
4670 | |
4671 // try to honor the signal mask | |
4672 sigset_t oset; | |
4673 thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset); | |
4674 | |
4675 // call into the chained handler | |
4676 if (siginfo_flag_set) { | |
4677 (*sa)(sig, siginfo, context); | |
4678 } else { | |
4679 (*hand)(sig); | |
4680 } | |
4681 | |
4682 // restore the signal mask | |
4683 thr_sigsetmask(SIG_SETMASK, &oset, 0); | |
4684 } | |
4685 // Tell jvm's signal handler the signal is taken care of. | |
4686 return true; | |
4687 } | |
4688 | |
4689 bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) { | |
4690 bool chained = false; | |
4691 // signal-chaining | |
4692 if (UseSignalChaining) { | |
4693 struct sigaction *actp = get_chained_signal_action(sig); | |
4694 if (actp != NULL) { | |
4695 chained = call_chained_handler(actp, sig, siginfo, context); | |
4696 } | |
4697 } | |
4698 return chained; | |
4699 } | |
4700 | |
4701 struct sigaction* os::Solaris::get_preinstalled_handler(int sig) { | |
4702 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4703 if (preinstalled_sigs[sig] != 0) { | |
4704 return &chainedsigactions[sig]; | |
4705 } | |
4706 return NULL; | |
4707 } | |
4708 | |
4709 void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) { | |
4710 | |
4711 assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range"); | |
4712 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); | |
4713 chainedsigactions[sig] = oldAct; | |
4714 preinstalled_sigs[sig] = 1; | |
4715 } | |
4716 | |
4717 void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) { | |
4718 // Check for overwrite. | |
4719 struct sigaction oldAct; | |
4720 sigaction(sig, (struct sigaction*)NULL, &oldAct); | |
4721 void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4722 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4723 if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && | |
4724 oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && | |
4725 oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) { | |
4726 if (AllowUserSignalHandlers || !set_installed) { | |
4727 // Do not overwrite; user takes responsibility to forward to us. | |
4728 return; | |
4729 } else if (UseSignalChaining) { | |
4730 if (oktochain) { | |
4731 // save the old handler in jvm | |
4732 save_preinstalled_handler(sig, oldAct); | |
4733 } else { | |
4734 vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs."); | |
4735 } | |
4736 // libjsig also interposes the sigaction() call below and saves the | |
4737 // old sigaction on it own. | |
4738 } else { | |
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|
4739 fatal(err_msg("Encountered unexpected pre-existing sigaction handler " |
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|
4740 "%#lx for signal %d.", (long)oldhand, sig)); |
0 | 4741 } |
4742 } | |
4743 | |
4744 struct sigaction sigAct; | |
4745 sigfillset(&(sigAct.sa_mask)); | |
4746 sigAct.sa_handler = SIG_DFL; | |
4747 | |
4748 sigAct.sa_sigaction = signalHandler; | |
4749 // Handle SIGSEGV on alternate signal stack if | |
4750 // not using stack banging | |
4751 if (!UseStackBanging && sig == SIGSEGV) { | |
4752 sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK; | |
4753 // Interruptible i/o requires SA_RESTART cleared so EINTR | |
4754 // is returned instead of restarting system calls | |
4755 } else if (sig == os::Solaris::SIGinterrupt()) { | |
4756 sigemptyset(&sigAct.sa_mask); | |
4757 sigAct.sa_handler = NULL; | |
4758 sigAct.sa_flags = SA_SIGINFO; | |
4759 sigAct.sa_sigaction = sigINTRHandler; | |
4760 } else { | |
4761 sigAct.sa_flags = SA_SIGINFO | SA_RESTART; | |
4762 } | |
4763 os::Solaris::set_our_sigflags(sig, sigAct.sa_flags); | |
4764 | |
4765 sigaction(sig, &sigAct, &oldAct); | |
4766 | |
4767 void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) | |
4768 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); | |
4769 assert(oldhand2 == oldhand, "no concurrent signal handler installation"); | |
4770 } | |
4771 | |
4772 | |
4773 #define DO_SIGNAL_CHECK(sig) \ | |
4774 if (!sigismember(&check_signal_done, sig)) \ | |
4775 os::Solaris::check_signal_handler(sig) | |
4776 | |
4777 // This method is a periodic task to check for misbehaving JNI applications | |
4778 // under CheckJNI, we can add any periodic checks here | |
4779 | |
4780 void os::run_periodic_checks() { | |
4781 // A big source of grief is hijacking virt. addr 0x0 on Solaris, | |
4782 // thereby preventing a NULL checks. | |
4783 if(!check_addr0_done) check_addr0_done = check_addr0(tty); | |
4784 | |
4785 if (check_signals == false) return; | |
4786 | |
4787 // SEGV and BUS if overridden could potentially prevent | |
4788 // generation of hs*.log in the event of a crash, debugging | |
4789 // such a case can be very challenging, so we absolutely | |
4790 // check for the following for a good measure: | |
4791 DO_SIGNAL_CHECK(SIGSEGV); | |
4792 DO_SIGNAL_CHECK(SIGILL); | |
4793 DO_SIGNAL_CHECK(SIGFPE); | |
4794 DO_SIGNAL_CHECK(SIGBUS); | |
4795 DO_SIGNAL_CHECK(SIGPIPE); | |
4796 DO_SIGNAL_CHECK(SIGXFSZ); | |
4797 | |
4798 // ReduceSignalUsage allows the user to override these handlers | |
4799 // see comments at the very top and jvm_solaris.h | |
4800 if (!ReduceSignalUsage) { | |
4801 DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); | |
4802 DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); | |
4803 DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); | |
4804 DO_SIGNAL_CHECK(BREAK_SIGNAL); | |
4805 } | |
4806 | |
4807 // See comments above for using JVM1/JVM2 and UseAltSigs | |
4808 DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt()); | |
4809 DO_SIGNAL_CHECK(os::Solaris::SIGasync()); | |
4810 | |
4811 } | |
4812 | |
4813 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); | |
4814 | |
4815 static os_sigaction_t os_sigaction = NULL; | |
4816 | |
4817 void os::Solaris::check_signal_handler(int sig) { | |
4818 char buf[O_BUFLEN]; | |
4819 address jvmHandler = NULL; | |
4820 | |
4821 struct sigaction act; | |
4822 if (os_sigaction == NULL) { | |
4823 // only trust the default sigaction, in case it has been interposed | |
4824 os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); | |
4825 if (os_sigaction == NULL) return; | |
4826 } | |
4827 | |
4828 os_sigaction(sig, (struct sigaction*)NULL, &act); | |
4829 | |
4830 address thisHandler = (act.sa_flags & SA_SIGINFO) | |
4831 ? CAST_FROM_FN_PTR(address, act.sa_sigaction) | |
4832 : CAST_FROM_FN_PTR(address, act.sa_handler) ; | |
4833 | |
4834 | |
4835 switch(sig) { | |
4836 case SIGSEGV: | |
4837 case SIGBUS: | |
4838 case SIGFPE: | |
4839 case SIGPIPE: | |
4840 case SIGXFSZ: | |
4841 case SIGILL: | |
4842 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4843 break; | |
4844 | |
4845 case SHUTDOWN1_SIGNAL: | |
4846 case SHUTDOWN2_SIGNAL: | |
4847 case SHUTDOWN3_SIGNAL: | |
4848 case BREAK_SIGNAL: | |
4849 jvmHandler = (address)user_handler(); | |
4850 break; | |
4851 | |
4852 default: | |
4853 int intrsig = os::Solaris::SIGinterrupt(); | |
4854 int asynsig = os::Solaris::SIGasync(); | |
4855 | |
4856 if (sig == intrsig) { | |
4857 jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler); | |
4858 } else if (sig == asynsig) { | |
4859 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); | |
4860 } else { | |
4861 return; | |
4862 } | |
4863 break; | |
4864 } | |
4865 | |
4866 | |
4867 if (thisHandler != jvmHandler) { | |
4868 tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); | |
4869 tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); | |
4870 tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); | |
4871 // No need to check this sig any longer | |
4872 sigaddset(&check_signal_done, sig); | |
4873 } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) { | |
4874 tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); | |
4875 tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig)); | |
4876 tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags); | |
4877 // No need to check this sig any longer | |
4878 sigaddset(&check_signal_done, sig); | |
4879 } | |
4880 | |
4881 // Print all the signal handler state | |
4882 if (sigismember(&check_signal_done, sig)) { | |
4883 print_signal_handlers(tty, buf, O_BUFLEN); | |
4884 } | |
4885 | |
4886 } | |
4887 | |
4888 void os::Solaris::install_signal_handlers() { | |
4889 bool libjsigdone = false; | |
4890 signal_handlers_are_installed = true; | |
4891 | |
4892 // signal-chaining | |
4893 typedef void (*signal_setting_t)(); | |
4894 signal_setting_t begin_signal_setting = NULL; | |
4895 signal_setting_t end_signal_setting = NULL; | |
4896 begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4897 dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); | |
4898 if (begin_signal_setting != NULL) { | |
4899 end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, | |
4900 dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); | |
4901 get_signal_action = CAST_TO_FN_PTR(get_signal_t, | |
4902 dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); | |
4903 get_libjsig_version = CAST_TO_FN_PTR(version_getting_t, | |
4904 dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version")); | |
4905 libjsig_is_loaded = true; | |
4906 if (os::Solaris::get_libjsig_version != NULL) { | |
4907 libjsigversion = (*os::Solaris::get_libjsig_version)(); | |
4908 } | |
4909 assert(UseSignalChaining, "should enable signal-chaining"); | |
4910 } | |
4911 if (libjsig_is_loaded) { | |
4912 // Tell libjsig jvm is setting signal handlers | |
4913 (*begin_signal_setting)(); | |
4914 } | |
4915 | |
4916 set_signal_handler(SIGSEGV, true, true); | |
4917 set_signal_handler(SIGPIPE, true, true); | |
4918 set_signal_handler(SIGXFSZ, true, true); | |
4919 set_signal_handler(SIGBUS, true, true); | |
4920 set_signal_handler(SIGILL, true, true); | |
4921 set_signal_handler(SIGFPE, true, true); | |
4922 | |
4923 | |
4924 if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) { | |
4925 | |
4926 // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so | |
4927 // can not register overridable signals which might be > 32 | |
4928 if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) { | |
4929 // Tell libjsig jvm has finished setting signal handlers | |
4930 (*end_signal_setting)(); | |
4931 libjsigdone = true; | |
4932 } | |
4933 } | |
4934 | |
4935 // Never ok to chain our SIGinterrupt | |
4936 set_signal_handler(os::Solaris::SIGinterrupt(), true, false); | |
4937 set_signal_handler(os::Solaris::SIGasync(), true, true); | |
4938 | |
4939 if (libjsig_is_loaded && !libjsigdone) { | |
4940 // Tell libjsig jvm finishes setting signal handlers | |
4941 (*end_signal_setting)(); | |
4942 } | |
4943 | |
4944 // We don't activate signal checker if libjsig is in place, we trust ourselves | |
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4945 // and if UserSignalHandler is installed all bets are off. |
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4946 // Log that signal checking is off only if -verbose:jni is specified. |
0 | 4947 if (CheckJNICalls) { |
4948 if (libjsig_is_loaded) { | |
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4949 if (PrintJNIResolving) { |
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4950 tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); |
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4951 } |
0 | 4952 check_signals = false; |
4953 } | |
4954 if (AllowUserSignalHandlers) { | |
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4955 if (PrintJNIResolving) { |
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4956 tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); |
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4957 } |
0 | 4958 check_signals = false; |
4959 } | |
4960 } | |
4961 } | |
4962 | |
4963 | |
4964 void report_error(const char* file_name, int line_no, const char* title, const char* format, ...); | |
4965 | |
4966 const char * signames[] = { | |
4967 "SIG0", | |
4968 "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", | |
4969 "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", | |
4970 "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", | |
4971 "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH", | |
4972 "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT", | |
4973 "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU", | |
4974 "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW", | |
4975 "SIGCANCEL", "SIGLOST" | |
4976 }; | |
4977 | |
4978 const char* os::exception_name(int exception_code, char* buf, size_t size) { | |
4979 if (0 < exception_code && exception_code <= SIGRTMAX) { | |
4980 // signal | |
4981 if (exception_code < sizeof(signames)/sizeof(const char*)) { | |
4982 jio_snprintf(buf, size, "%s", signames[exception_code]); | |
4983 } else { | |
4984 jio_snprintf(buf, size, "SIG%d", exception_code); | |
4985 } | |
4986 return buf; | |
4987 } else { | |
4988 return NULL; | |
4989 } | |
4990 } | |
4991 | |
4992 // (Static) wrappers for the new libthread API | |
4993 int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate; | |
4994 int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate; | |
4995 int_fnP_thread_t_i os::Solaris::_thr_setmutator; | |
4996 int_fnP_thread_t os::Solaris::_thr_suspend_mutator; | |
4997 int_fnP_thread_t os::Solaris::_thr_continue_mutator; | |
4998 | |
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4999 // (Static) wrapper for getisax(2) call. |
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5000 os::Solaris::getisax_func_t os::Solaris::_getisax = 0; |
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5001 |
0 | 5002 // (Static) wrappers for the liblgrp API |
5003 os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home; | |
5004 os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init; | |
5005 os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini; | |
5006 os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root; | |
5007 os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children; | |
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5008 os::Solaris::lgrp_resources_func_t os::Solaris::_lgrp_resources; |
0 | 5009 os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps; |
5010 os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale; | |
5011 os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0; | |
5012 | |
5013 // (Static) wrapper for meminfo() call. | |
5014 os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0; | |
5015 | |
641
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5016 static address resolve_symbol_lazy(const char* name) { |
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|
5017 address addr = (address) dlsym(RTLD_DEFAULT, name); |
0 | 5018 if(addr == NULL) { |
5019 // RTLD_DEFAULT was not defined on some early versions of 2.5.1 | |
5020 addr = (address) dlsym(RTLD_NEXT, name); | |
641
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|
5021 } |
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diff
changeset
|
5022 return addr; |
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6812587: Use auxv to determine SPARC hardware features on Solaris
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diff
changeset
|
5023 } |
6af0a709d52b
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diff
changeset
|
5024 |
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diff
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|
5025 static address resolve_symbol(const char* name) { |
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changeset
|
5026 address addr = resolve_symbol_lazy(name); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5027 if(addr == NULL) { |
6af0a709d52b
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parents:
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diff
changeset
|
5028 fatal(dlerror()); |
0 | 5029 } |
5030 return addr; | |
5031 } | |
5032 | |
5033 | |
5034 | |
5035 // isT2_libthread() | |
5036 // | |
5037 // Routine to determine if we are currently using the new T2 libthread. | |
5038 // | |
5039 // We determine if we are using T2 by reading /proc/self/lstatus and | |
5040 // looking for a thread with the ASLWP bit set. If we find this status | |
5041 // bit set, we must assume that we are NOT using T2. The T2 team | |
5042 // has approved this algorithm. | |
5043 // | |
5044 // We need to determine if we are running with the new T2 libthread | |
5045 // since setting native thread priorities is handled differently | |
5046 // when using this library. All threads created using T2 are bound | |
5047 // threads. Calling thr_setprio is meaningless in this case. | |
5048 // | |
5049 bool isT2_libthread() { | |
5050 static prheader_t * lwpArray = NULL; | |
5051 static int lwpSize = 0; | |
5052 static int lwpFile = -1; | |
5053 lwpstatus_t * that; | |
5054 char lwpName [128]; | |
5055 bool isT2 = false; | |
5056 | |
5057 #define ADR(x) ((uintptr_t)(x)) | |
5058 #define LWPINDEX(ary,ix) ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1)))) | |
5059 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5060 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
|
5061 if (lwpFile < 0) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5062 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
|
5063 return false; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5064 } |
0 | 5065 lwpSize = 16*1024; |
5066 for (;;) { | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5067 ::lseek64 (lwpFile, 0, SEEK_SET); |
6197 | 5068 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
|
5069 if (::read(lwpFile, lwpArray, lwpSize) < 0) { |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5070 if (ThreadPriorityVerbose) warning("Error reading /proc/self/lstatus\n"); |
0 | 5071 break; |
5072 } | |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5073 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
|
5074 // 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
|
5075 int aslwpcount = 0; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5076 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
|
5077 that = LWPINDEX(lwpArray,i); |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5078 if (that->pr_flags & PR_ASLWP) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5079 aslwpcount++; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5080 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5081 } |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5082 if (aslwpcount == 0) isT2 = true; |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5083 break; |
0 | 5084 } |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5085 lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize; |
6197 | 5086 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); // retry. |
5087 } | |
5088 | |
5089 FREE_C_HEAP_ARRAY(char, lwpArray, mtInternal); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5090 ::close (lwpFile); |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5091 if (ThreadPriorityVerbose) { |
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5092 if (isT2) tty->print_cr("We are running with a T2 libthread\n"); |
0 | 5093 else tty->print_cr("We are not running with a T2 libthread\n"); |
5094 } | |
89
b97de546208e
6671882: memory access after free in solaris/vm/os_solaris.cpp
xlu
parents:
79
diff
changeset
|
5095 return isT2; |
0 | 5096 } |
5097 | |
5098 | |
5099 void os::Solaris::libthread_init() { | |
5100 address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators"); | |
5101 | |
5102 // Determine if we are running with the new T2 libthread | |
5103 os::Solaris::set_T2_libthread(isT2_libthread()); | |
5104 | |
5105 lwp_priocntl_init(); | |
5106 | |
5107 // RTLD_DEFAULT was not defined on some early versions of 5.5.1 | |
5108 if(func == NULL) { | |
5109 func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators"); | |
5110 // Guarantee that this VM is running on an new enough OS (5.6 or | |
5111 // later) that it will have a new enough libthread.so. | |
5112 guarantee(func != NULL, "libthread.so is too old."); | |
5113 } | |
5114 | |
5115 // Initialize the new libthread getstate API wrappers | |
5116 func = resolve_symbol("thr_getstate"); | |
5117 os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func)); | |
5118 | |
5119 func = resolve_symbol("thr_setstate"); | |
5120 os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func)); | |
5121 | |
5122 func = resolve_symbol("thr_setmutator"); | |
5123 os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func)); | |
5124 | |
5125 func = resolve_symbol("thr_suspend_mutator"); | |
5126 os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
5127 | |
5128 func = resolve_symbol("thr_continue_mutator"); | |
5129 os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); | |
5130 | |
5131 int size; | |
5132 void (*handler_info_func)(address *, int *); | |
5133 handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo")); | |
5134 handler_info_func(&handler_start, &size); | |
5135 handler_end = handler_start + size; | |
5136 } | |
5137 | |
5138 | |
5139 int_fnP_mutex_tP os::Solaris::_mutex_lock; | |
5140 int_fnP_mutex_tP os::Solaris::_mutex_trylock; | |
5141 int_fnP_mutex_tP os::Solaris::_mutex_unlock; | |
5142 int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init; | |
5143 int_fnP_mutex_tP os::Solaris::_mutex_destroy; | |
5144 int os::Solaris::_mutex_scope = USYNC_THREAD; | |
5145 | |
5146 int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait; | |
5147 int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait; | |
5148 int_fnP_cond_tP os::Solaris::_cond_signal; | |
5149 int_fnP_cond_tP os::Solaris::_cond_broadcast; | |
5150 int_fnP_cond_tP_i_vP os::Solaris::_cond_init; | |
5151 int_fnP_cond_tP os::Solaris::_cond_destroy; | |
5152 int os::Solaris::_cond_scope = USYNC_THREAD; | |
5153 | |
5154 void os::Solaris::synchronization_init() { | |
5155 if(UseLWPSynchronization) { | |
5156 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock"))); | |
5157 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock"))); | |
5158 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock"))); | |
5159 os::Solaris::set_mutex_init(lwp_mutex_init); | |
5160 os::Solaris::set_mutex_destroy(lwp_mutex_destroy); | |
5161 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
5162 | |
5163 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait"))); | |
5164 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait"))); | |
5165 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal"))); | |
5166 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast"))); | |
5167 os::Solaris::set_cond_init(lwp_cond_init); | |
5168 os::Solaris::set_cond_destroy(lwp_cond_destroy); | |
5169 os::Solaris::set_cond_scope(USYNC_THREAD); | |
5170 } | |
5171 else { | |
5172 os::Solaris::set_mutex_scope(USYNC_THREAD); | |
5173 os::Solaris::set_cond_scope(USYNC_THREAD); | |
5174 | |
5175 if(UsePthreads) { | |
5176 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock"))); | |
5177 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock"))); | |
5178 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock"))); | |
5179 os::Solaris::set_mutex_init(pthread_mutex_default_init); | |
5180 os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy"))); | |
5181 | |
5182 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait"))); | |
5183 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait"))); | |
5184 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal"))); | |
5185 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast"))); | |
5186 os::Solaris::set_cond_init(pthread_cond_default_init); | |
5187 os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy"))); | |
5188 } | |
5189 else { | |
5190 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock"))); | |
5191 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock"))); | |
5192 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock"))); | |
5193 os::Solaris::set_mutex_init(::mutex_init); | |
5194 os::Solaris::set_mutex_destroy(::mutex_destroy); | |
5195 | |
5196 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait"))); | |
5197 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait"))); | |
5198 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal"))); | |
5199 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast"))); | |
5200 os::Solaris::set_cond_init(::cond_init); | |
5201 os::Solaris::set_cond_destroy(::cond_destroy); | |
5202 } | |
5203 } | |
5204 } | |
5205 | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5206 bool os::Solaris::liblgrp_init() { |
267
9d6a3a6891f8
6720130: NUMA allocator: The linux version should search for libnuma.so.1
iveresov
parents:
144
diff
changeset
|
5207 void *handle = dlopen("liblgrp.so.1", RTLD_LAZY); |
0 | 5208 if (handle != NULL) { |
5209 os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home"))); | |
5210 os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init"))); | |
5211 os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini"))); | |
5212 os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root"))); | |
5213 os::Solaris::set_lgrp_children(CAST_TO_FN_PTR(lgrp_children_func_t, dlsym(handle, "lgrp_children"))); | |
144
e3729351c946
6697534: Premature GC and invalid lgrp selection with NUMA-aware allocator.
iveresov
parents:
141
diff
changeset
|
5214 os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources"))); |
0 | 5215 os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps"))); |
5216 os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t, | |
5217 dlsym(handle, "lgrp_cookie_stale"))); | |
5218 | |
5219 lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER); | |
5220 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
|
5221 return true; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5222 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5223 return false; |
0 | 5224 } |
5225 | |
5226 void os::Solaris::misc_sym_init() { | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5227 address func; |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5228 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5229 // getisax |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5230 func = resolve_symbol_lazy("getisax"); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5231 if (func != NULL) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5232 os::Solaris::_getisax = CAST_TO_FN_PTR(getisax_func_t, func); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5233 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5234 |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5235 // meminfo |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5236 func = resolve_symbol_lazy("meminfo"); |
0 | 5237 if (func != NULL) { |
5238 os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func)); | |
5239 } | |
5240 } | |
5241 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5242 uint_t os::Solaris::getisax(uint32_t* array, uint_t n) { |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5243 assert(_getisax != NULL, "_getisax not set"); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5244 return _getisax(array, n); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5245 } |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5246 |
0 | 5247 // Symbol doesn't exist in Solaris 8 pset.h |
5248 #ifndef PS_MYID | |
5249 #define PS_MYID -3 | |
5250 #endif | |
5251 | |
5252 // int pset_getloadavg(psetid_t pset, double loadavg[], int nelem); | |
5253 typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem); | |
5254 static pset_getloadavg_type pset_getloadavg_ptr = NULL; | |
5255 | |
5256 void init_pset_getloadavg_ptr(void) { | |
5257 pset_getloadavg_ptr = | |
5258 (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg"); | |
5259 if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) { | |
5260 warning("pset_getloadavg function not found"); | |
5261 } | |
5262 } | |
5263 | |
5264 int os::Solaris::_dev_zero_fd = -1; | |
5265 | |
5266 // this is called _before_ the global arguments have been parsed | |
5267 void os::init(void) { | |
5268 _initial_pid = getpid(); | |
5269 | |
5270 max_hrtime = first_hrtime = gethrtime(); | |
5271 | |
5272 init_random(1234567); | |
5273 | |
5274 page_size = sysconf(_SC_PAGESIZE); | |
5275 if (page_size == -1) | |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1353
diff
changeset
|
5276 fatal(err_msg("os_solaris.cpp: os::init: sysconf failed (%s)", |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1353
diff
changeset
|
5277 strerror(errno))); |
0 | 5278 init_page_sizes((size_t) page_size); |
5279 | |
5280 Solaris::initialize_system_info(); | |
5281 | |
641
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5282 // Initialize misc. symbols as soon as possible, so we can use them |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5283 // if we need them. |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5284 Solaris::misc_sym_init(); |
6af0a709d52b
6812587: Use auxv to determine SPARC hardware features on Solaris
twisti
parents:
548
diff
changeset
|
5285 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5286 int fd = ::open("/dev/zero", O_RDWR); |
0 | 5287 if (fd < 0) { |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1353
diff
changeset
|
5288 fatal(err_msg("os::init: cannot open /dev/zero (%s)", strerror(errno))); |
0 | 5289 } else { |
5290 Solaris::set_dev_zero_fd(fd); | |
5291 | |
5292 // Close on exec, child won't inherit. | |
5293 fcntl(fd, F_SETFD, FD_CLOEXEC); | |
5294 } | |
5295 | |
5296 clock_tics_per_sec = CLK_TCK; | |
5297 | |
5298 // check if dladdr1() exists; dladdr1 can provide more information than | |
5299 // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9 | |
5300 // and is available on linker patches for 5.7 and 5.8. | |
5301 // libdl.so must have been loaded, this call is just an entry lookup | |
5302 void * hdl = dlopen("libdl.so", RTLD_NOW); | |
5303 if (hdl) | |
5304 dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1")); | |
5305 | |
5306 // (Solaris only) this switches to calls that actually do locking. | |
5307 ThreadCritical::initialize(); | |
5308 | |
5309 main_thread = thr_self(); | |
5310 | |
5311 // Constant minimum stack size allowed. It must be at least | |
5312 // the minimum of what the OS supports (thr_min_stack()), and | |
5313 // enough to allow the thread to get to user bytecode execution. | |
5314 Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed); | |
5315 // If the pagesize of the VM is greater than 8K determine the appropriate | |
5316 // number of initial guard pages. The user can change this with the | |
5317 // command line arguments, if needed. | |
5318 if (vm_page_size() > 8*K) { | |
5319 StackYellowPages = 1; | |
5320 StackRedPages = 1; | |
5321 StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size(); | |
5322 } | |
5323 } | |
5324 | |
5325 // To install functions for atexit system call | |
5326 extern "C" { | |
5327 static void perfMemory_exit_helper() { | |
5328 perfMemory_exit(); | |
5329 } | |
5330 } | |
5331 | |
5332 // this is called _after_ the global arguments have been parsed | |
5333 jint os::init_2(void) { | |
5334 // try to enable extended file IO ASAP, see 6431278 | |
5335 os::Solaris::try_enable_extended_io(); | |
5336 | |
5337 // Allocate a single page and mark it as readable for safepoint polling. Also | |
5338 // use this first mmap call to check support for MAP_ALIGN. | |
5339 address polling_page = (address)Solaris::mmap_chunk((char*)page_size, | |
5340 page_size, | |
5341 MAP_PRIVATE | MAP_ALIGN, | |
5342 PROT_READ); | |
5343 if (polling_page == NULL) { | |
5344 has_map_align = false; | |
5345 polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE, | |
5346 PROT_READ); | |
5347 } | |
5348 | |
5349 os::set_polling_page(polling_page); | |
5350 | |
5351 #ifndef PRODUCT | |
5352 if( Verbose && PrintMiscellaneous ) | |
5353 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
5354 #endif | |
5355 | |
5356 if (!UseMembar) { | |
5357 address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE ); | |
5358 guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page"); | |
5359 os::set_memory_serialize_page( mem_serialize_page ); | |
5360 | |
5361 #ifndef PRODUCT | |
5362 if(Verbose && PrintMiscellaneous) | |
5363 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
5364 #endif | |
5365 } | |
5366 | |
3318
188c9a5d6a6d
7040485: Use transparent huge page on linux by default
iveresov
parents:
3292
diff
changeset
|
5367 os::large_page_init(); |
0 | 5368 |
5369 // Check minimum allowable stack size for thread creation and to initialize | |
5370 // the java system classes, including StackOverflowError - depends on page | |
5371 // 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
|
5372 // Add in 2*BytesPerWord times page size to account for VM stack during |
0 | 5373 // 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
|
5374 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
|
5375 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
5376 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size); |
0 | 5377 |
5378 size_t threadStackSizeInBytes = ThreadStackSize * K; | |
5379 if (threadStackSizeInBytes != 0 && | |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
5380 threadStackSizeInBytes < os::Solaris::min_stack_allowed) { |
0 | 5381 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
|
5382 os::Solaris::min_stack_allowed/K); |
0 | 5383 return JNI_ERR; |
5384 } | |
5385 | |
5386 // For 64kbps there will be a 64kb page size, which makes | |
5387 // the usable default stack size quite a bit less. Increase the | |
5388 // stack for 64kb (or any > than 8kb) pages, this increases | |
5389 // virtual memory fragmentation (since we're not creating the | |
5390 // stack on a power of 2 boundary. The real fix for this | |
5391 // should be to fix the guard page mechanism. | |
5392 | |
5393 if (vm_page_size() > 8*K) { | |
5394 threadStackSizeInBytes = (threadStackSizeInBytes != 0) | |
5395 ? threadStackSizeInBytes + | |
5396 ((StackYellowPages + StackRedPages) * vm_page_size()) | |
5397 : 0; | |
5398 ThreadStackSize = threadStackSizeInBytes/K; | |
5399 } | |
5400 | |
5401 // Make the stack size a multiple of the page size so that | |
5402 // the yellow/red zones can be guarded. | |
5403 JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, | |
5404 vm_page_size())); | |
5405 | |
5406 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
|
5407 |
0 | 5408 if (UseNUMA) { |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5409 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
|
5410 UseNUMA = false; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5411 } else { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5412 size_t lgrp_limit = os::numa_get_groups_num(); |
6197 | 5413 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
|
5414 size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit); |
6197 | 5415 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
|
5416 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
|
5417 // 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
|
5418 UseNUMA = false; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5419 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5420 } |
3292
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5421 // ISM is not compatible with the NUMA allocator - it always allocates |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5422 // pages round-robin across the lgroups. |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5423 if (UseNUMA && UseLargePages && UseISM) { |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5424 if (!FLAG_IS_DEFAULT(UseNUMA)) { |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5425 if (FLAG_IS_DEFAULT(UseLargePages) && FLAG_IS_DEFAULT(UseISM)) { |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5426 UseLargePages = false; |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5427 } else { |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5428 warning("UseNUMA is not compatible with ISM large pages, disabling NUMA allocator"); |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5429 UseNUMA = false; |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5430 } |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5431 } else { |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5432 UseNUMA = false; |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5433 } |
c303b3532d4a
7037939: NUMA: Disable adaptive resizing if SHM large pages are used
iveresov
parents:
2304
diff
changeset
|
5434 } |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5435 if (!UseNUMA && ForceNUMA) { |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5436 UseNUMA = true; |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5437 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5438 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
439
diff
changeset
|
5439 |
0 | 5440 Solaris::signal_sets_init(); |
5441 Solaris::init_signal_mem(); | |
5442 Solaris::install_signal_handlers(); | |
5443 | |
5444 if (libjsigversion < JSIG_VERSION_1_4_1) { | |
5445 Maxlibjsigsigs = OLDMAXSIGNUM; | |
5446 } | |
5447 | |
5448 // initialize synchronization primitives to use either thread or | |
5449 // lwp synchronization (controlled by UseLWPSynchronization) | |
5450 Solaris::synchronization_init(); | |
5451 | |
5452 if (MaxFDLimit) { | |
5453 // set the number of file descriptors to max. print out error | |
5454 // if getrlimit/setrlimit fails but continue regardless. | |
5455 struct rlimit nbr_files; | |
5456 int status = getrlimit(RLIMIT_NOFILE, &nbr_files); | |
5457 if (status != 0) { | |
5458 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5459 perror("os::init_2 getrlimit failed"); | |
5460 } else { | |
5461 nbr_files.rlim_cur = nbr_files.rlim_max; | |
5462 status = setrlimit(RLIMIT_NOFILE, &nbr_files); | |
5463 if (status != 0) { | |
5464 if (PrintMiscellaneous && (Verbose || WizardMode)) | |
5465 perror("os::init_2 setrlimit failed"); | |
5466 } | |
5467 } | |
5468 } | |
5469 | |
5470 // Calculate theoretical max. size of Threads to guard gainst | |
5471 // artifical out-of-memory situations, where all available address- | |
5472 // space has been reserved by thread stacks. Default stack size is 1Mb. | |
5473 size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ? | |
5474 JavaThread::stack_size_at_create() : (1*K*K); | |
5475 assert(pre_thread_stack_size != 0, "Must have a stack"); | |
5476 // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when | |
5477 // we should start doing Virtual Memory banging. Currently when the threads will | |
5478 // have used all but 200Mb of space. | |
5479 size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K); | |
5480 Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size; | |
5481 | |
5482 // at-exit methods are called in the reverse order of their registration. | |
5483 // In Solaris 7 and earlier, atexit functions are called on return from | |
5484 // main or as a result of a call to exit(3C). There can be only 32 of | |
5485 // these functions registered and atexit() does not set errno. In Solaris | |
5486 // 8 and later, there is no limit to the number of functions registered | |
5487 // and atexit() sets errno. In addition, in Solaris 8 and later, atexit | |
5488 // functions are called upon dlclose(3DL) in addition to return from main | |
5489 // and exit(3C). | |
5490 | |
5491 if (PerfAllowAtExitRegistration) { | |
5492 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
5493 // atexit functions can be delayed until process exit time, which | |
5494 // can be problematic for embedded VM situations. Embedded VMs should | |
5495 // call DestroyJavaVM() to assure that VM resources are released. | |
5496 | |
5497 // note: perfMemory_exit_helper atexit function may be removed in | |
5498 // the future if the appropriate cleanup code can be added to the | |
5499 // VM_Exit VMOperation's doit method. | |
5500 if (atexit(perfMemory_exit_helper) != 0) { | |
5501 warning("os::init2 atexit(perfMemory_exit_helper) failed"); | |
5502 } | |
5503 } | |
5504 | |
5505 // Init pset_loadavg function pointer | |
5506 init_pset_getloadavg_ptr(); | |
5507 | |
5508 return JNI_OK; | |
5509 } | |
5510 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5511 void os::init_3(void) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5512 return; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
5513 } |
0 | 5514 |
5515 // Mark the polling page as unreadable | |
5516 void os::make_polling_page_unreadable(void) { | |
5517 if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 ) | |
5518 fatal("Could not disable polling page"); | |
5519 }; | |
5520 | |
5521 // Mark the polling page as readable | |
5522 void os::make_polling_page_readable(void) { | |
5523 if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 ) | |
5524 fatal("Could not enable polling page"); | |
5525 }; | |
5526 | |
5527 // OS interface. | |
5528 | |
5529 bool os::check_heap(bool force) { return true; } | |
5530 | |
5531 typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr); | |
5532 static vsnprintf_t sol_vsnprintf = NULL; | |
5533 | |
5534 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { | |
5535 if (!sol_vsnprintf) { | |
5536 //search for the named symbol in the objects that were loaded after libjvm | |
5537 void* where = RTLD_NEXT; | |
5538 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5539 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5540 if (!sol_vsnprintf){ | |
5541 //search for the named symbol in the objects that were loaded before libjvm | |
5542 where = RTLD_DEFAULT; | |
5543 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) | |
5544 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); | |
5545 assert(sol_vsnprintf != NULL, "vsnprintf not found"); | |
5546 } | |
5547 } | |
5548 return (*sol_vsnprintf)(buf, count, fmt, argptr); | |
5549 } | |
5550 | |
5551 | |
5552 // Is a (classpath) directory empty? | |
5553 bool os::dir_is_empty(const char* path) { | |
5554 DIR *dir = NULL; | |
5555 struct dirent *ptr; | |
5556 | |
5557 dir = opendir(path); | |
5558 if (dir == NULL) return true; | |
5559 | |
5560 /* Scan the directory */ | |
5561 bool result = true; | |
5562 char buf[sizeof(struct dirent) + MAX_PATH]; | |
5563 struct dirent *dbuf = (struct dirent *) buf; | |
5564 while (result && (ptr = readdir(dir, dbuf)) != NULL) { | |
5565 if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { | |
5566 result = false; | |
5567 } | |
5568 } | |
5569 closedir(dir); | |
5570 return result; | |
5571 } | |
5572 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5573 // 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
|
5574 // from src/solaris/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5575 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5576 #ifndef O_DELETE |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5577 #define O_DELETE 0x10000 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5578 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5579 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5580 // 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
|
5581 // 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
|
5582 // 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
|
5583 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5584 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
|
5585 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5586 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5587 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5588 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5589 int fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5590 int o_delete = (oflag & O_DELETE); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5591 oflag = oflag & ~O_DELETE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5592 |
2097 | 5593 fd = ::open64(path, oflag, mode); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5594 if (fd == -1) return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5595 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5596 //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
|
5597 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5598 struct stat64 buf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5599 int ret = ::fstat64(fd, &buf64); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5600 int st_mode = buf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5601 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5602 if (ret != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5603 if ((st_mode & S_IFMT) == S_IFDIR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5604 errno = EISDIR; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5605 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5606 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5607 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5608 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5609 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5610 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5611 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5612 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5613 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5614 * 32-bit Solaris systems suffer from: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5615 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5616 * - 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
|
5617 * 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
|
5618 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5619 * - 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
|
5620 * 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
|
5621 * 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
|
5622 * 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
|
5623 * 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
|
5624 * 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
|
5625 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5626 * We attempt to make everything work anyways by: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5627 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5628 * - 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
|
5629 * 256 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5630 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5631 * - 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
|
5632 * 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
|
5633 * 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
|
5634 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5635 * - 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
|
5636 * 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
|
5637 * 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
|
5638 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5639 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5640 * 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
|
5641 * 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
|
5642 * 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
|
5643 * enable_extended_FILE_stdio() in VM initialisation |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5644 * Giri Mandalika's blog |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5645 * 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
|
5646 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5647 #ifndef _LP64 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5648 if ((!enabled_extended_FILE_stdio) && fd < 256) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5649 int newfd = ::fcntl(fd, F_DUPFD, 256); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5650 if (newfd != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5651 ::close(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5652 fd = newfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5653 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5654 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5655 #endif // 32-bit Solaris |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5656 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5657 * 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
|
5658 * specifically destined for a subprocess should have the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5659 * 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
|
5660 * 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
|
5661 * 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
|
5662 * UNIXProcess.c), and this in turn might: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5663 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5664 * - 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
|
5665 * descriptors, resulting in mysterious hangs, or |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5666 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5667 * - 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
|
5668 * suffering from bug 1085341. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5669 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5670 * (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
|
5671 * design flaw) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5672 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5673 * See: |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5674 * 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
|
5675 * 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
|
5676 * 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
|
5677 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5678 #ifdef FD_CLOEXEC |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5679 { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5680 int flags = ::fcntl(fd, F_GETFD); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5681 if (flags != -1) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5682 ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5683 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5684 #endif |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5685 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5686 if (o_delete != 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5687 ::unlink(path); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5688 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5689 return fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5690 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5691 |
0 | 5692 // create binary file, rewriting existing file if required |
5693 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
5694 int oflags = O_WRONLY | O_CREAT; | |
5695 if (!rewrite_existing) { | |
5696 oflags |= O_EXCL; | |
5697 } | |
5698 return ::open64(path, oflags, S_IREAD | S_IWRITE); | |
5699 } | |
5700 | |
5701 // return current position of file pointer | |
5702 jlong os::current_file_offset(int fd) { | |
5703 return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); | |
5704 } | |
5705 | |
5706 // move file pointer to the specified offset | |
5707 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
5708 return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); | |
5709 } | |
5710 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5711 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
|
5712 return (jlong) ::lseek64(fd, offset, whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5713 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5714 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5715 char * os::native_path(char *path) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5716 return path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5717 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5718 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5719 int os::ftruncate(int fd, jlong length) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5720 return ::ftruncate64(fd, length); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5721 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5722 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5723 int os::fsync(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5724 RESTARTABLE_RETURN_INT(::fsync(fd)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5725 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5726 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5727 int os::available(int fd, jlong *bytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5728 jlong cur, end; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5729 int mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5730 struct stat64 buf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5731 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5732 if (::fstat64(fd, &buf64) >= 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5733 mode = buf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5734 if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5735 /* |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5736 * XXX: is the following call interruptible? If so, this might |
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
5737 * need to go through the INTERRUPT_IO() wrapper as for other |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
5738 * blocking, interruptible calls in this file. |
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
5739 */ |
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6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5740 int n,ioctl_return; |
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
5741 |
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diff
changeset
|
5742 INTERRUPTIBLE(::ioctl(fd, FIONREAD, &n),ioctl_return,os::Solaris::clear_interrupted); |
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1972
diff
changeset
|
5743 if (ioctl_return>= 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5744 *bytes = n; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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parents:
1972
diff
changeset
|
5745 return 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5746 } |
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
5747 } |
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6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5748 } |
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6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
5749 if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
5750 return 0; |
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diff
changeset
|
5751 } else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
5752 return 0; |
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diff
changeset
|
5753 } else if (::lseek64(fd, cur, SEEK_SET) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
5754 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
5755 } |
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
5756 *bytes = end - cur; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
5757 return 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
5758 } |
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|
5759 |
0 | 5760 // Map a block of memory. |
6197 | 5761 char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5762 char *addr, size_t bytes, bool read_only, |
5763 bool allow_exec) { | |
5764 int prot; | |
5765 int flags; | |
5766 | |
5767 if (read_only) { | |
5768 prot = PROT_READ; | |
5769 flags = MAP_SHARED; | |
5770 } else { | |
5771 prot = PROT_READ | PROT_WRITE; | |
5772 flags = MAP_PRIVATE; | |
5773 } | |
5774 | |
5775 if (allow_exec) { | |
5776 prot |= PROT_EXEC; | |
5777 } | |
5778 | |
5779 if (addr != NULL) { | |
5780 flags |= MAP_FIXED; | |
5781 } | |
5782 | |
5783 char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, | |
5784 fd, file_offset); | |
5785 if (mapped_address == MAP_FAILED) { | |
5786 return NULL; | |
5787 } | |
5788 return mapped_address; | |
5789 } | |
5790 | |
5791 | |
5792 // Remap a block of memory. | |
6197 | 5793 char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
0 | 5794 char *addr, size_t bytes, bool read_only, |
5795 bool allow_exec) { | |
5796 // same as map_memory() on this OS | |
5797 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
5798 allow_exec); | |
5799 } | |
5800 | |
5801 | |
5802 // Unmap a block of memory. | |
6197 | 5803 bool os::pd_unmap_memory(char* addr, size_t bytes) { |
0 | 5804 return munmap(addr, bytes) == 0; |
5805 } | |
5806 | |
5807 void os::pause() { | |
5808 char filename[MAX_PATH]; | |
5809 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
5810 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
5811 } else { | |
5812 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
5813 } | |
5814 | |
5815 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
5816 if (fd != -1) { | |
5817 struct stat buf; | |
1980
828eafbd85cc
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diff
changeset
|
5818 ::close(fd); |
0 | 5819 while (::stat(filename, &buf) == 0) { |
5820 (void)::poll(NULL, 0, 100); | |
5821 } | |
5822 } else { | |
5823 jio_fprintf(stderr, | |
5824 "Could not open pause file '%s', continuing immediately.\n", filename); | |
5825 } | |
5826 } | |
5827 | |
5828 #ifndef PRODUCT | |
5829 #ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5830 // Turn this on if you need to trace synch operations. | |
5831 // Set RECORD_SYNCH_LIMIT to a large-enough value, | |
5832 // and call record_synch_enable and record_synch_disable | |
5833 // around the computation of interest. | |
5834 | |
5835 void record_synch(char* name, bool returning); // defined below | |
5836 | |
5837 class RecordSynch { | |
5838 char* _name; | |
5839 public: | |
5840 RecordSynch(char* name) :_name(name) | |
5841 { record_synch(_name, false); } | |
5842 ~RecordSynch() { record_synch(_name, true); } | |
5843 }; | |
5844 | |
5845 #define CHECK_SYNCH_OP(ret, name, params, args, inner) \ | |
5846 extern "C" ret name params { \ | |
5847 typedef ret name##_t params; \ | |
5848 static name##_t* implem = NULL; \ | |
5849 static int callcount = 0; \ | |
5850 if (implem == NULL) { \ | |
5851 implem = (name##_t*) dlsym(RTLD_NEXT, #name); \ | |
5852 if (implem == NULL) fatal(dlerror()); \ | |
5853 } \ | |
5854 ++callcount; \ | |
5855 RecordSynch _rs(#name); \ | |
5856 inner; \ | |
5857 return implem args; \ | |
5858 } | |
5859 // in dbx, examine callcounts this way: | |
5860 // for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done | |
5861 | |
5862 #define CHECK_POINTER_OK(p) \ | |
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5863 (!Universe::is_fully_initialized() || !Universe::is_reserved_heap((oop)(p))) |
0 | 5864 #define CHECK_MU \ |
5865 if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only."); | |
5866 #define CHECK_CV \ | |
5867 if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only."); | |
5868 #define CHECK_P(p) \ | |
5869 if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only."); | |
5870 | |
5871 #define CHECK_MUTEX(mutex_op) \ | |
5872 CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU); | |
5873 | |
5874 CHECK_MUTEX( mutex_lock) | |
5875 CHECK_MUTEX( _mutex_lock) | |
5876 CHECK_MUTEX( mutex_unlock) | |
5877 CHECK_MUTEX(_mutex_unlock) | |
5878 CHECK_MUTEX( mutex_trylock) | |
5879 CHECK_MUTEX(_mutex_trylock) | |
5880 | |
5881 #define CHECK_COND(cond_op) \ | |
5882 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV); | |
5883 | |
5884 CHECK_COND( cond_wait); | |
5885 CHECK_COND(_cond_wait); | |
5886 CHECK_COND(_cond_wait_cancel); | |
5887 | |
5888 #define CHECK_COND2(cond_op) \ | |
5889 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV); | |
5890 | |
5891 CHECK_COND2( cond_timedwait); | |
5892 CHECK_COND2(_cond_timedwait); | |
5893 CHECK_COND2(_cond_timedwait_cancel); | |
5894 | |
5895 // do the _lwp_* versions too | |
5896 #define mutex_t lwp_mutex_t | |
5897 #define cond_t lwp_cond_t | |
5898 CHECK_MUTEX( _lwp_mutex_lock) | |
5899 CHECK_MUTEX( _lwp_mutex_unlock) | |
5900 CHECK_MUTEX( _lwp_mutex_trylock) | |
5901 CHECK_MUTEX( __lwp_mutex_lock) | |
5902 CHECK_MUTEX( __lwp_mutex_unlock) | |
5903 CHECK_MUTEX( __lwp_mutex_trylock) | |
5904 CHECK_MUTEX(___lwp_mutex_lock) | |
5905 CHECK_MUTEX(___lwp_mutex_unlock) | |
5906 | |
5907 CHECK_COND( _lwp_cond_wait); | |
5908 CHECK_COND( __lwp_cond_wait); | |
5909 CHECK_COND(___lwp_cond_wait); | |
5910 | |
5911 CHECK_COND2( _lwp_cond_timedwait); | |
5912 CHECK_COND2( __lwp_cond_timedwait); | |
5913 #undef mutex_t | |
5914 #undef cond_t | |
5915 | |
5916 CHECK_SYNCH_OP(int, _lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5917 CHECK_SYNCH_OP(int,__lwp_suspend2, (int lwp, int *n), (lwp, n), 0); | |
5918 CHECK_SYNCH_OP(int, _lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5919 CHECK_SYNCH_OP(int,__lwp_kill, (int lwp, int n), (lwp, n), 0); | |
5920 CHECK_SYNCH_OP(int, _lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5921 CHECK_SYNCH_OP(int,__lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); | |
5922 CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5923 CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); | |
5924 | |
5925 | |
5926 // recording machinery: | |
5927 | |
5928 enum { RECORD_SYNCH_LIMIT = 200 }; | |
5929 char* record_synch_name[RECORD_SYNCH_LIMIT]; | |
5930 void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT]; | |
5931 bool record_synch_returning[RECORD_SYNCH_LIMIT]; | |
5932 thread_t record_synch_thread[RECORD_SYNCH_LIMIT]; | |
5933 int record_synch_count = 0; | |
5934 bool record_synch_enabled = false; | |
5935 | |
5936 // in dbx, examine recorded data this way: | |
5937 // for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done | |
5938 | |
5939 void record_synch(char* name, bool returning) { | |
5940 if (record_synch_enabled) { | |
5941 if (record_synch_count < RECORD_SYNCH_LIMIT) { | |
5942 record_synch_name[record_synch_count] = name; | |
5943 record_synch_returning[record_synch_count] = returning; | |
5944 record_synch_thread[record_synch_count] = thr_self(); | |
5945 record_synch_arg0ptr[record_synch_count] = &name; | |
5946 record_synch_count++; | |
5947 } | |
5948 // put more checking code here: | |
5949 // ... | |
5950 } | |
5951 } | |
5952 | |
5953 void record_synch_enable() { | |
5954 // start collecting trace data, if not already doing so | |
5955 if (!record_synch_enabled) record_synch_count = 0; | |
5956 record_synch_enabled = true; | |
5957 } | |
5958 | |
5959 void record_synch_disable() { | |
5960 // stop collecting trace data | |
5961 record_synch_enabled = false; | |
5962 } | |
5963 | |
5964 #endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS | |
5965 #endif // PRODUCT | |
5966 | |
5967 const intptr_t thr_time_off = (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5968 const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) - | |
5969 (intptr_t)(&((prusage_t *)(NULL))->pr_utime); | |
5970 | |
5971 | |
5972 // JVMTI & JVM monitoring and management support | |
5973 // The thread_cpu_time() and current_thread_cpu_time() are only | |
5974 // supported if is_thread_cpu_time_supported() returns true. | |
5975 // They are not supported on Solaris T1. | |
5976 | |
5977 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
5978 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
5979 // of a thread. | |
5980 // | |
5981 // current_thread_cpu_time() and thread_cpu_time(Thread *) | |
5982 // returns the fast estimate available on the platform. | |
5983 | |
5984 // hrtime_t gethrvtime() return value includes | |
5985 // user time but does not include system time | |
5986 jlong os::current_thread_cpu_time() { | |
5987 return (jlong) gethrvtime(); | |
5988 } | |
5989 | |
5990 jlong os::thread_cpu_time(Thread *thread) { | |
5991 // return user level CPU time only to be consistent with | |
5992 // what current_thread_cpu_time returns. | |
5993 // thread_cpu_time_info() must be changed if this changes | |
5994 return os::thread_cpu_time(thread, false /* user time only */); | |
5995 } | |
5996 | |
5997 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
5998 if (user_sys_cpu_time) { | |
5999 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
6000 } else { | |
6001 return os::current_thread_cpu_time(); | |
6002 } | |
6003 } | |
6004 | |
6005 jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { | |
6006 char proc_name[64]; | |
6007 int count; | |
6008 prusage_t prusage; | |
6009 jlong lwp_time; | |
6010 int fd; | |
6011 | |
6012 sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage", | |
6013 getpid(), | |
6014 thread->osthread()->lwp_id()); | |
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diff
changeset
|
6015 fd = ::open(proc_name, O_RDONLY); |
0 | 6016 if ( fd == -1 ) return -1; |
6017 | |
6018 do { | |
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828eafbd85cc
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diff
changeset
|
6019 count = ::pread(fd, |
0 | 6020 (void *)&prusage.pr_utime, |
6021 thr_time_size, | |
6022 thr_time_off); | |
6023 } while (count < 0 && errno == EINTR); | |
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828eafbd85cc
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1972
diff
changeset
|
6024 ::close(fd); |
0 | 6025 if ( count < 0 ) return -1; |
6026 | |
6027 if (user_sys_cpu_time) { | |
6028 // user + system CPU time | |
6029 lwp_time = (((jlong)prusage.pr_stime.tv_sec + | |
6030 (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) + | |
6031 (jlong)prusage.pr_stime.tv_nsec + | |
6032 (jlong)prusage.pr_utime.tv_nsec; | |
6033 } else { | |
6034 // user level CPU time only | |
6035 lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) + | |
6036 (jlong)prusage.pr_utime.tv_nsec; | |
6037 } | |
6038 | |
6039 return(lwp_time); | |
6040 } | |
6041 | |
6042 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
6043 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
6044 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
6045 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
6046 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
6047 } | |
6048 | |
6049 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
6050 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits | |
6051 info_ptr->may_skip_backward = false; // elapsed time not wall time | |
6052 info_ptr->may_skip_forward = false; // elapsed time not wall time | |
6053 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned | |
6054 } | |
6055 | |
6056 bool os::is_thread_cpu_time_supported() { | |
6057 if ( os::Solaris::T2_libthread() || UseBoundThreads ) { | |
6058 return true; | |
6059 } else { | |
6060 return false; | |
6061 } | |
6062 } | |
6063 | |
6064 // System loadavg support. Returns -1 if load average cannot be obtained. | |
6065 // Return the load average for our processor set if the primitive exists | |
6066 // (Solaris 9 and later). Otherwise just return system wide loadavg. | |
6067 int os::loadavg(double loadavg[], int nelem) { | |
6068 if (pset_getloadavg_ptr != NULL) { | |
6069 return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem); | |
6070 } else { | |
6071 return ::getloadavg(loadavg, nelem); | |
6072 } | |
6073 } | |
6074 | |
6075 //--------------------------------------------------------------------------------- | |
6076 | |
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diff
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6077 bool os::find(address addr, outputStream* st) { |
0 | 6078 Dl_info dlinfo; |
6079 memset(&dlinfo, 0, sizeof(dlinfo)); | |
6080 if (dladdr(addr, &dlinfo)) { | |
6081 #ifdef _LP64 | |
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126ea7725993
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|
6082 st->print("0x%016lx: ", addr); |
0 | 6083 #else |
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diff
changeset
|
6084 st->print("0x%08x: ", addr); |
0 | 6085 #endif |
6086 if (dlinfo.dli_sname != NULL) | |
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126ea7725993
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diff
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6087 st->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr); |
0 | 6088 else if (dlinfo.dli_fname) |
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126ea7725993
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changeset
|
6089 st->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase); |
0 | 6090 else |
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diff
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|
6091 st->print("<absolute address>"); |
126ea7725993
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|
6092 if (dlinfo.dli_fname) st->print(" in %s", dlinfo.dli_fname); |
0 | 6093 #ifdef _LP64 |
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diff
changeset
|
6094 if (dlinfo.dli_fbase) st->print(" at 0x%016lx", dlinfo.dli_fbase); |
0 | 6095 #else |
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diff
changeset
|
6096 if (dlinfo.dli_fbase) st->print(" at 0x%08x", dlinfo.dli_fbase); |
0 | 6097 #endif |
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|
6098 st->cr(); |
0 | 6099 |
6100 if (Verbose) { | |
6101 // decode some bytes around the PC | |
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|
6102 address begin = clamp_address_in_page(addr-40, addr, os::vm_page_size()); |
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|
6103 address end = clamp_address_in_page(addr+40, addr, os::vm_page_size()); |
0 | 6104 address lowest = (address) dlinfo.dli_sname; |
6105 if (!lowest) lowest = (address) dlinfo.dli_fbase; | |
6106 if (begin < lowest) begin = lowest; | |
6107 Dl_info dlinfo2; | |
6108 if (dladdr(end, &dlinfo2) && dlinfo2.dli_saddr != dlinfo.dli_saddr | |
6109 && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) | |
6110 end = (address) dlinfo2.dli_saddr; | |
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6111 Disassembler::decode(begin, end, st); |
0 | 6112 } |
6113 return true; | |
6114 } | |
6115 return false; | |
6116 } | |
6117 | |
6118 // Following function has been added to support HotSparc's libjvm.so running | |
6119 // under Solaris production JDK 1.2.2 / 1.3.0. These came from | |
6120 // src/solaris/hpi/native_threads in the EVM codebase. | |
6121 // | |
6122 // NOTE: This is no longer needed in the 1.3.1 and 1.4 production release | |
6123 // libraries and should thus be removed. We will leave it behind for a while | |
6124 // until we no longer want to able to run on top of 1.3.0 Solaris production | |
6125 // JDK. See 4341971. | |
6126 | |
6127 #define STACK_SLACK 0x800 | |
6128 | |
6129 extern "C" { | |
6130 intptr_t sysThreadAvailableStackWithSlack() { | |
6131 stack_t st; | |
6132 intptr_t retval, stack_top; | |
6133 retval = thr_stksegment(&st); | |
6134 assert(retval == 0, "incorrect return value from thr_stksegment"); | |
6135 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); | |
6136 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); | |
6137 stack_top=(intptr_t)st.ss_sp-st.ss_size; | |
6138 return ((intptr_t)&stack_top - stack_top - STACK_SLACK); | |
6139 } | |
6140 } | |
6141 | |
6142 // ObjectMonitor park-unpark infrastructure ... | |
6143 // | |
6144 // We implement Solaris and Linux PlatformEvents with the | |
6145 // obvious condvar-mutex-flag triple. | |
6146 // Another alternative that works quite well is pipes: | |
6147 // Each PlatformEvent consists of a pipe-pair. | |
6148 // The thread associated with the PlatformEvent | |
6149 // calls park(), which reads from the input end of the pipe. | |
6150 // Unpark() writes into the other end of the pipe. | |
6151 // The write-side of the pipe must be set NDELAY. | |
6152 // Unfortunately pipes consume a large # of handles. | |
6153 // Native solaris lwp_park() and lwp_unpark() work nicely, too. | |
6154 // Using pipes for the 1st few threads might be workable, however. | |
6155 // | |
6156 // park() is permitted to return spuriously. | |
6157 // Callers of park() should wrap the call to park() in | |
6158 // an appropriate loop. A litmus test for the correct | |
6159 // usage of park is the following: if park() were modified | |
6160 // to immediately return 0 your code should still work, | |
6161 // albeit degenerating to a spin loop. | |
6162 // | |
6163 // An interesting optimization for park() is to use a trylock() | |
6164 // to attempt to acquire the mutex. If the trylock() fails | |
6165 // then we know that a concurrent unpark() operation is in-progress. | |
6166 // in that case the park() code could simply set _count to 0 | |
6167 // and return immediately. The subsequent park() operation *might* | |
6168 // return immediately. That's harmless as the caller of park() is | |
6169 // expected to loop. By using trylock() we will have avoided a | |
6170 // avoided a context switch caused by contention on the per-thread mutex. | |
6171 // | |
6172 // TODO-FIXME: | |
6173 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the | |
6174 // objectmonitor implementation. | |
6175 // 2. Collapse the JSR166 parker event, and the | |
6176 // objectmonitor ParkEvent into a single "Event" construct. | |
6177 // 3. In park() and unpark() add: | |
6178 // assert (Thread::current() == AssociatedWith). | |
6179 // 4. add spurious wakeup injection on a -XX:EarlyParkReturn=N switch. | |
6180 // 1-out-of-N park() operations will return immediately. | |
6181 // | |
6182 // _Event transitions in park() | |
6183 // -1 => -1 : illegal | |
6184 // 1 => 0 : pass - return immediately | |
6185 // 0 => -1 : block | |
6186 // | |
6187 // _Event serves as a restricted-range semaphore. | |
6188 // | |
6189 // Another possible encoding of _Event would be with | |
6190 // explicit "PARKED" == 01b and "SIGNALED" == 10b bits. | |
6191 // | |
6192 // TODO-FIXME: add DTRACE probes for: | |
6193 // 1. Tx parks | |
6194 // 2. Ty unparks Tx | |
6195 // 3. Tx resumes from park | |
6196 | |
6197 | |
6198 // value determined through experimentation | |
6199 #define ROUNDINGFIX 11 | |
6200 | |
6201 // utility to compute the abstime argument to timedwait. | |
6202 // TODO-FIXME: switch from compute_abstime() to unpackTime(). | |
6203 | |
6204 static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) { | |
6205 // millis is the relative timeout time | |
6206 // abstime will be the absolute timeout time | |
6207 if (millis < 0) millis = 0; | |
6208 struct timeval now; | |
6209 int status = gettimeofday(&now, NULL); | |
6210 assert(status == 0, "gettimeofday"); | |
6211 jlong seconds = millis / 1000; | |
6212 jlong max_wait_period; | |
6213 | |
6214 if (UseLWPSynchronization) { | |
6215 // forward port of fix for 4275818 (not sleeping long enough) | |
6216 // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where | |
6217 // _lwp_cond_timedwait() used a round_down algorithm rather | |
6218 // than a round_up. For millis less than our roundfactor | |
6219 // it rounded down to 0 which doesn't meet the spec. | |
6220 // For millis > roundfactor we may return a bit sooner, but | |
6221 // since we can not accurately identify the patch level and | |
6222 // this has already been fixed in Solaris 9 and 8 we will | |
6223 // leave it alone rather than always rounding down. | |
6224 | |
6225 if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX; | |
6226 // It appears that when we go directly through Solaris _lwp_cond_timedwait() | |
6227 // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6 | |
6228 max_wait_period = 21000000; | |
6229 } else { | |
6230 max_wait_period = 50000000; | |
6231 } | |
6232 millis %= 1000; | |
6233 if (seconds > max_wait_period) { // see man cond_timedwait(3T) | |
6234 seconds = max_wait_period; | |
6235 } | |
6236 abstime->tv_sec = now.tv_sec + seconds; | |
6237 long usec = now.tv_usec + millis * 1000; | |
6238 if (usec >= 1000000) { | |
6239 abstime->tv_sec += 1; | |
6240 usec -= 1000000; | |
6241 } | |
6242 abstime->tv_nsec = usec * 1000; | |
6243 return abstime; | |
6244 } | |
6245 | |
6246 // Test-and-clear _Event, always leaves _Event set to 0, returns immediately. | |
6247 // Conceptually TryPark() should be equivalent to park(0). | |
6248 | |
6249 int os::PlatformEvent::TryPark() { | |
6250 for (;;) { | |
6251 const int v = _Event ; | |
6252 guarantee ((v == 0) || (v == 1), "invariant") ; | |
6253 if (Atomic::cmpxchg (0, &_Event, v) == v) return v ; | |
6254 } | |
6255 } | |
6256 | |
6257 void os::PlatformEvent::park() { // AKA: down() | |
6258 // Invariant: Only the thread associated with the Event/PlatformEvent | |
6259 // may call park(). | |
6260 int v ; | |
6261 for (;;) { | |
6262 v = _Event ; | |
6263 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
6264 } | |
6265 guarantee (v >= 0, "invariant") ; | |
6266 if (v == 0) { | |
6267 // Do this the hard way by blocking ... | |
6268 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6269 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
6270 // Only for SPARC >= V8PlusA | |
6271 #if defined(__sparc) && defined(COMPILER2) | |
6272 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6273 #endif | |
6274 int status = os::Solaris::mutex_lock(_mutex); | |
6275 assert_status(status == 0, status, "mutex_lock"); | |
6276 guarantee (_nParked == 0, "invariant") ; | |
6277 ++ _nParked ; | |
6278 while (_Event < 0) { | |
6279 // for some reason, under 2.7 lwp_cond_wait() may return ETIME ... | |
6280 // Treat this the same as if the wait was interrupted | |
6281 // With usr/lib/lwp going to kernel, always handle ETIME | |
6282 status = os::Solaris::cond_wait(_cond, _mutex); | |
6283 if (status == ETIME) status = EINTR ; | |
6284 assert_status(status == 0 || status == EINTR, status, "cond_wait"); | |
6285 } | |
6286 -- _nParked ; | |
6287 _Event = 0 ; | |
6288 status = os::Solaris::mutex_unlock(_mutex); | |
6289 assert_status(status == 0, status, "mutex_unlock"); | |
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6290 // Paranoia to ensure our locked and lock-free paths interact |
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6291 // correctly with each other. |
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6292 OrderAccess::fence(); |
0 | 6293 } |
6294 } | |
6295 | |
6296 int os::PlatformEvent::park(jlong millis) { | |
6297 guarantee (_nParked == 0, "invariant") ; | |
6298 int v ; | |
6299 for (;;) { | |
6300 v = _Event ; | |
6301 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
6302 } | |
6303 guarantee (v >= 0, "invariant") ; | |
6304 if (v != 0) return OS_OK ; | |
6305 | |
6306 int ret = OS_TIMEOUT; | |
6307 timestruc_t abst; | |
6308 compute_abstime (&abst, millis); | |
6309 | |
6310 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6311 // For Solaris SPARC set fprs.FEF=0 prior to parking. | |
6312 // Only for SPARC >= V8PlusA | |
6313 #if defined(__sparc) && defined(COMPILER2) | |
6314 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6315 #endif | |
6316 int status = os::Solaris::mutex_lock(_mutex); | |
6317 assert_status(status == 0, status, "mutex_lock"); | |
6318 guarantee (_nParked == 0, "invariant") ; | |
6319 ++ _nParked ; | |
6320 while (_Event < 0) { | |
6321 int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst); | |
6322 assert_status(status == 0 || status == EINTR || | |
6323 status == ETIME || status == ETIMEDOUT, | |
6324 status, "cond_timedwait"); | |
6325 if (!FilterSpuriousWakeups) break ; // previous semantics | |
6326 if (status == ETIME || status == ETIMEDOUT) break ; | |
6327 // We consume and ignore EINTR and spurious wakeups. | |
6328 } | |
6329 -- _nParked ; | |
6330 if (_Event >= 0) ret = OS_OK ; | |
6331 _Event = 0 ; | |
6332 status = os::Solaris::mutex_unlock(_mutex); | |
6333 assert_status(status == 0, status, "mutex_unlock"); | |
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6334 // Paranoia to ensure our locked and lock-free paths interact |
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6335 // correctly with each other. |
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6336 OrderAccess::fence(); |
0 | 6337 return ret; |
6338 } | |
6339 | |
6340 void os::PlatformEvent::unpark() { | |
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6341 // Transitions for _Event: |
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6342 // 0 :=> 1 |
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6343 // 1 :=> 1 |
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6344 // -1 :=> either 0 or 1; must signal target thread |
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6345 // That is, we can safely transition _Event from -1 to either |
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6346 // 0 or 1. Forcing 1 is slightly more efficient for back-to-back |
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6347 // unpark() calls. |
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6348 // See also: "Semaphores in Plan 9" by Mullender & Cox |
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6349 // |
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6350 // Note: Forcing a transition from "-1" to "1" on an unpark() means |
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6351 // that it will take two back-to-back park() calls for the owning |
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6352 // thread to block. This has the benefit of forcing a spurious return |
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6353 // from the first park() call after an unpark() call which will help |
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6354 // shake out uses of park() and unpark() without condition variables. |
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6355 |
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6356 if (Atomic::xchg(1, &_Event) >= 0) return; |
0 | 6357 |
6358 // If the thread associated with the event was parked, wake it. | |
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6359 // Wait for the thread assoc with the PlatformEvent to vacate. |
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6360 int status = os::Solaris::mutex_lock(_mutex); |
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6361 assert_status(status == 0, status, "mutex_lock"); |
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6362 int AnyWaiters = _nParked; |
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6363 status = os::Solaris::mutex_unlock(_mutex); |
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6364 assert_status(status == 0, status, "mutex_unlock"); |
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6365 guarantee(AnyWaiters == 0 || AnyWaiters == 1, "invariant"); |
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6366 if (AnyWaiters != 0) { |
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6367 // We intentional signal *after* dropping the lock |
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6368 // to avoid a common class of futile wakeups. |
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6369 status = os::Solaris::cond_signal(_cond); |
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6370 assert_status(status == 0, status, "cond_signal"); |
0 | 6371 } |
6372 } | |
6373 | |
6374 // JSR166 | |
6375 // ------------------------------------------------------- | |
6376 | |
6377 /* | |
6378 * The solaris and linux implementations of park/unpark are fairly | |
6379 * conservative for now, but can be improved. They currently use a | |
6380 * mutex/condvar pair, plus _counter. | |
6381 * Park decrements _counter if > 0, else does a condvar wait. Unpark | |
6382 * sets count to 1 and signals condvar. Only one thread ever waits | |
6383 * on the condvar. Contention seen when trying to park implies that someone | |
6384 * is unparking you, so don't wait. And spurious returns are fine, so there | |
6385 * is no need to track notifications. | |
6386 */ | |
6387 | |
6388 #define MAX_SECS 100000000 | |
6389 /* | |
6390 * This code is common to linux and solaris and will be moved to a | |
6391 * common place in dolphin. | |
6392 * | |
6393 * The passed in time value is either a relative time in nanoseconds | |
6394 * or an absolute time in milliseconds. Either way it has to be unpacked | |
6395 * into suitable seconds and nanoseconds components and stored in the | |
6396 * given timespec structure. | |
6397 * Given time is a 64-bit value and the time_t used in the timespec is only | |
6398 * a signed-32-bit value (except on 64-bit Linux) we have to watch for | |
6399 * overflow if times way in the future are given. Further on Solaris versions | |
6400 * prior to 10 there is a restriction (see cond_timedwait) that the specified | |
6401 * number of seconds, in abstime, is less than current_time + 100,000,000. | |
6402 * As it will be 28 years before "now + 100000000" will overflow we can | |
6403 * ignore overflow and just impose a hard-limit on seconds using the value | |
6404 * of "now + 100,000,000". This places a limit on the timeout of about 3.17 | |
6405 * years from "now". | |
6406 */ | |
6407 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { | |
6408 assert (time > 0, "convertTime"); | |
6409 | |
6410 struct timeval now; | |
6411 int status = gettimeofday(&now, NULL); | |
6412 assert(status == 0, "gettimeofday"); | |
6413 | |
6414 time_t max_secs = now.tv_sec + MAX_SECS; | |
6415 | |
6416 if (isAbsolute) { | |
6417 jlong secs = time / 1000; | |
6418 if (secs > max_secs) { | |
6419 absTime->tv_sec = max_secs; | |
6420 } | |
6421 else { | |
6422 absTime->tv_sec = secs; | |
6423 } | |
6424 absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; | |
6425 } | |
6426 else { | |
6427 jlong secs = time / NANOSECS_PER_SEC; | |
6428 if (secs >= MAX_SECS) { | |
6429 absTime->tv_sec = max_secs; | |
6430 absTime->tv_nsec = 0; | |
6431 } | |
6432 else { | |
6433 absTime->tv_sec = now.tv_sec + secs; | |
6434 absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; | |
6435 if (absTime->tv_nsec >= NANOSECS_PER_SEC) { | |
6436 absTime->tv_nsec -= NANOSECS_PER_SEC; | |
6437 ++absTime->tv_sec; // note: this must be <= max_secs | |
6438 } | |
6439 } | |
6440 } | |
6441 assert(absTime->tv_sec >= 0, "tv_sec < 0"); | |
6442 assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); | |
6443 assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); | |
6444 assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); | |
6445 } | |
6446 | |
6447 void Parker::park(bool isAbsolute, jlong time) { | |
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6448 // Ideally we'd do something useful while spinning, such |
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6449 // as calling unpackTime(). |
0 | 6450 |
6451 // Optional fast-path check: | |
6452 // Return immediately if a permit is available. | |
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6453 // We depend on Atomic::xchg() having full barrier semantics |
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6454 // since we are doing a lock-free update to _counter. |
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6455 if (Atomic::xchg(0, &_counter) > 0) return; |
0 | 6456 |
6457 // Optional fast-exit: Check interrupt before trying to wait | |
6458 Thread* thread = Thread::current(); | |
6459 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
6460 JavaThread *jt = (JavaThread *)thread; | |
6461 if (Thread::is_interrupted(thread, false)) { | |
6462 return; | |
6463 } | |
6464 | |
6465 // First, demultiplex/decode time arguments | |
6466 timespec absTime; | |
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6467 if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all |
0 | 6468 return; |
6469 } | |
6470 if (time > 0) { | |
6471 // Warning: this code might be exposed to the old Solaris time | |
6472 // round-down bugs. Grep "roundingFix" for details. | |
6473 unpackTime(&absTime, isAbsolute, time); | |
6474 } | |
6475 | |
6476 // Enter safepoint region | |
6477 // Beware of deadlocks such as 6317397. | |
6478 // The per-thread Parker:: _mutex is a classic leaf-lock. | |
6479 // In particular a thread must never block on the Threads_lock while | |
6480 // holding the Parker:: mutex. If safepoints are pending both the | |
6481 // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. | |
6482 ThreadBlockInVM tbivm(jt); | |
6483 | |
6484 // Don't wait if cannot get lock since interference arises from | |
6485 // unblocking. Also. check interrupt before trying wait | |
6486 if (Thread::is_interrupted(thread, false) || | |
6487 os::Solaris::mutex_trylock(_mutex) != 0) { | |
6488 return; | |
6489 } | |
6490 | |
6491 int status ; | |
6492 | |
6493 if (_counter > 0) { // no wait needed | |
6494 _counter = 0; | |
6495 status = os::Solaris::mutex_unlock(_mutex); | |
6496 assert (status == 0, "invariant") ; | |
7629
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6497 // 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
|
6498 // 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
|
6499 OrderAccess::fence(); |
0 | 6500 return; |
6501 } | |
6502 | |
6503 #ifdef ASSERT | |
6504 // Don't catch signals while blocked; let the running threads have the signals. | |
6505 // (This allows a debugger to break into the running thread.) | |
6506 sigset_t oldsigs; | |
6507 sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals(); | |
6508 thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); | |
6509 #endif | |
6510 | |
6511 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
6512 jt->set_suspend_equivalent(); | |
6513 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
6514 | |
6515 // Do this the hard way by blocking ... | |
6516 // See http://monaco.sfbay/detail.jsf?cr=5094058. | |
6517 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. | |
6518 // Only for SPARC >= V8PlusA | |
6519 #if defined(__sparc) && defined(COMPILER2) | |
6520 if (ClearFPUAtPark) { _mark_fpu_nosave() ; } | |
6521 #endif | |
6522 | |
6523 if (time == 0) { | |
6524 status = os::Solaris::cond_wait (_cond, _mutex) ; | |
6525 } else { | |
6526 status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime); | |
6527 } | |
6528 // Note that an untimed cond_wait() can sometimes return ETIME on older | |
6529 // versions of the Solaris. | |
6530 assert_status(status == 0 || status == EINTR || | |
6531 status == ETIME || status == ETIMEDOUT, | |
6532 status, "cond_timedwait"); | |
6533 | |
6534 #ifdef ASSERT | |
6535 thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL); | |
6536 #endif | |
6537 _counter = 0 ; | |
6538 status = os::Solaris::mutex_unlock(_mutex); | |
6539 assert_status(status == 0, status, "mutex_unlock") ; | |
7629
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6540 // 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
|
6541 // correctly with each other and Java-level accesses. |
22ba8c8ce6a6
8004902: correctness fixes motivated by contended locking work (6607129)
dcubed
parents:
7456
diff
changeset
|
6542 OrderAccess::fence(); |
0 | 6543 |
6544 // If externally suspended while waiting, re-suspend | |
6545 if (jt->handle_special_suspend_equivalent_condition()) { | |
6546 jt->java_suspend_self(); | |
6547 } | |
6548 } | |
6549 | |
6550 void Parker::unpark() { | |
6551 int s, status ; | |
6552 status = os::Solaris::mutex_lock (_mutex) ; | |
6553 assert (status == 0, "invariant") ; | |
6554 s = _counter; | |
6555 _counter = 1; | |
6556 status = os::Solaris::mutex_unlock (_mutex) ; | |
6557 assert (status == 0, "invariant") ; | |
6558 | |
6559 if (s < 1) { | |
6560 status = os::Solaris::cond_signal (_cond) ; | |
6561 assert (status == 0, "invariant") ; | |
6562 } | |
6563 } | |
6564 | |
6565 extern char** environ; | |
6566 | |
6567 // Run the specified command in a separate process. Return its exit value, | |
6568 // or -1 on failure (e.g. can't fork a new process). | |
6569 // Unlike system(), this function can be called from signal handler. It | |
6570 // doesn't block SIGINT et al. | |
6571 int os::fork_and_exec(char* cmd) { | |
6572 char * argv[4]; | |
6573 argv[0] = (char *)"sh"; | |
6574 argv[1] = (char *)"-c"; | |
6575 argv[2] = cmd; | |
6576 argv[3] = NULL; | |
6577 | |
6578 // fork is async-safe, fork1 is not so can't use in signal handler | |
6579 pid_t pid; | |
6580 Thread* t = ThreadLocalStorage::get_thread_slow(); | |
6581 if (t != NULL && t->is_inside_signal_handler()) { | |
6582 pid = fork(); | |
6583 } else { | |
6584 pid = fork1(); | |
6585 } | |
6586 | |
6587 if (pid < 0) { | |
6588 // fork failed | |
6589 warning("fork failed: %s", strerror(errno)); | |
6590 return -1; | |
6591 | |
6592 } else if (pid == 0) { | |
6593 // child process | |
6594 | |
6595 // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris | |
6596 execve("/usr/bin/sh", argv, environ); | |
6597 | |
6598 // execve failed | |
6599 _exit(-1); | |
6600 | |
6601 } else { | |
6602 // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't | |
6603 // care about the actual exit code, for now. | |
6604 | |
6605 int status; | |
6606 | |
6607 // Wait for the child process to exit. This returns immediately if | |
6608 // the child has already exited. */ | |
6609 while (waitpid(pid, &status, 0) < 0) { | |
6610 switch (errno) { | |
6611 case ECHILD: return 0; | |
6612 case EINTR: break; | |
6613 default: return -1; | |
6614 } | |
6615 } | |
6616 | |
6617 if (WIFEXITED(status)) { | |
6618 // The child exited normally; get its exit code. | |
6619 return WEXITSTATUS(status); | |
6620 } else if (WIFSIGNALED(status)) { | |
6621 // The child exited because of a signal | |
6622 // The best value to return is 0x80 + signal number, | |
6623 // because that is what all Unix shells do, and because | |
6624 // it allows callers to distinguish between process exit and | |
6625 // process death by signal. | |
6626 return 0x80 + WTERMSIG(status); | |
6627 } else { | |
6628 // Unknown exit code; pass it through | |
6629 return status; | |
6630 } | |
6631 } | |
6632 } | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6633 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6634 // is_headless_jre() |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6635 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6636 // 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
|
6637 // 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
|
6638 // |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6639 // 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
|
6640 // 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
|
6641 // |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6642 bool os::is_headless_jre() { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6643 struct stat statbuf; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6644 char buf[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6645 char libmawtpath[MAXPATHLEN]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6646 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
|
6647 const char *new_xawtstr = "/libawt_xawt.so"; |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6648 char *p; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6649 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6650 // Get path to libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6651 os::jvm_path(buf, sizeof(buf)); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6652 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6653 // Get rid of libjvm.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6654 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6655 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6656 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6657 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6658 // Get rid of client or server |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6659 p = strrchr(buf, '/'); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6660 if (p == NULL) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6661 else *p = '\0'; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6662 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6663 // check xawt/libmawt.so |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6664 strcpy(libmawtpath, buf); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6665 strcat(libmawtpath, xawtstr); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6666 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6667 |
4082
36b057451829
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
dholmes
parents:
4006
diff
changeset
|
6668 // check libawt_xawt.so |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6669 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
|
6670 strcat(libmawtpath, new_xawtstr); |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6671 if (::stat(libmawtpath, &statbuf) == 0) return false; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6672 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6673 return true; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6674 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1642
diff
changeset
|
6675 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6676 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
|
6677 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
|
6678 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6679 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6680 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
|
6681 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6682 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6683 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6684 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
|
6685 return ::close(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6686 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6687 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6688 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
|
6689 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
|
6690 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6691 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6692 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
|
6693 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
|
6694 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6695 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6696 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
|
6697 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
|
6698 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6699 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6700 // 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
|
6701 // 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
|
6702 // 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
|
6703 // "wait forever" value. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6704 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6705 int os::timeout(int fd, long timeout) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6706 int res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6707 struct timeval t; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6708 julong prevtime, newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6709 static const char* aNull = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6710 struct pollfd pfd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6711 pfd.fd = fd; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6712 pfd.events = POLLIN; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6713 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6714 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6715 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
|
6716 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6717 for(;;) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6718 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
|
6719 if(res == OS_ERR && errno == EINTR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6720 if(timeout != -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6721 gettimeofday(&t, &aNull); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6722 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
|
6723 timeout -= newtime - prevtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6724 if(timeout <= 0) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6725 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6726 prevtime = newtime; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6727 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6728 } else return res; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6729 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6730 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6731 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6732 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
|
6733 int _result; |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6734 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,\ |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6735 os::Solaris::clear_interrupted); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6736 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6737 // 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
|
6738 // one of two values when errno == EINTR |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6739 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6740 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
|
6741 && (errno == EINTR)) { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6742 /* 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
|
6743 INTERRUPTIBLE(::connect(fd, him, len), _result,\ |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6744 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6745 /* undo these changes */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6746 if (_result == OS_ERR) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6747 if (errno == EALREADY) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6748 errno = EINPROGRESS; /* fall through */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6749 } else if (errno == EISCONN) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6750 errno = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6751 return OS_OK; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6752 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6753 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6754 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6755 return _result; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6756 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6757 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6758 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
|
6759 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6760 return OS_ERR; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6761 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6762 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
|
6763 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6764 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6765 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6766 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
|
6767 sockaddr* from, socklen_t* fromlen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6768 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
|
6769 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6770 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6771 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6772 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
|
6773 struct sockaddr* to, socklen_t tolen) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6774 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
|
6775 os::Solaris::clear_interrupted); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6776 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6777 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
6778 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
|
6779 if (fd < 0) { |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6780 return OS_OK; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6781 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6782 int ret; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6783 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6784 // 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
|
6785 // 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
|
6786 return (ret == OS_ERR) ? 0 : 1; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6787 } |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6788 |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6789 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
|
6790 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
|
6791 os::Solaris::clear_interrupted); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4082
diff
changeset
|
6792 } |
6200
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6793 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6794 // Get the default path to the core file |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6795 // Returns the length of the string |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6796 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
|
6797 const char* p = get_current_directory(buffer, bufferSize); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6798 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6799 if (p == NULL) { |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6800 assert(p != NULL, "failed to get current directory"); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6801 return 0; |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6802 } |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6803 |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6804 return strlen(buffer); |
65906dc96aa1
7129724: MAC: Core file location is wrong in crash report
mikael
parents:
6197
diff
changeset
|
6805 } |