Mercurial > hg > truffle
annotate src/os/windows/vm/os_windows.cpp @ 8162:da10229e5a33
Experiment with new LSRA block order.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 08 Mar 2013 11:23:28 +0100 |
parents | 5fc51c1ecdeb |
children | b9a918201d47 |
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 | |
6916 | 25 // Must be at least Windows 2000 or XP to use IsDebuggerPresent |
0 | 26 #define _WIN32_WINNT 0x500 |
27 | |
1972 | 28 // no precompiled headers |
29 #include "classfile/classLoader.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "code/icBuffer.hpp" | |
33 #include "code/vtableStubs.hpp" | |
34 #include "compiler/compileBroker.hpp" | |
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35 #include "compiler/disassembler.hpp" |
1972 | 36 #include "interpreter/interpreter.hpp" |
37 #include "jvm_windows.h" | |
38 #include "memory/allocation.inline.hpp" | |
39 #include "memory/filemap.hpp" | |
40 #include "mutex_windows.inline.hpp" | |
41 #include "oops/oop.inline.hpp" | |
42 #include "os_share_windows.hpp" | |
43 #include "prims/jniFastGetField.hpp" | |
44 #include "prims/jvm.h" | |
45 #include "prims/jvm_misc.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/extendedPC.hpp" | |
48 #include "runtime/globals.hpp" | |
49 #include "runtime/interfaceSupport.hpp" | |
50 #include "runtime/java.hpp" | |
51 #include "runtime/javaCalls.hpp" | |
52 #include "runtime/mutexLocker.hpp" | |
53 #include "runtime/objectMonitor.hpp" | |
54 #include "runtime/osThread.hpp" | |
55 #include "runtime/perfMemory.hpp" | |
56 #include "runtime/sharedRuntime.hpp" | |
57 #include "runtime/statSampler.hpp" | |
58 #include "runtime/stubRoutines.hpp" | |
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59 #include "runtime/thread.inline.hpp" |
1972 | 60 #include "runtime/threadCritical.hpp" |
61 #include "runtime/timer.hpp" | |
62 #include "services/attachListener.hpp" | |
63 #include "services/runtimeService.hpp" | |
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64 #include "utilities/decoder.hpp" |
1972 | 65 #include "utilities/defaultStream.hpp" |
66 #include "utilities/events.hpp" | |
67 #include "utilities/growableArray.hpp" | |
68 #include "utilities/vmError.hpp" | |
0 | 69 |
70 #ifdef _DEBUG | |
71 #include <crtdbg.h> | |
72 #endif | |
73 | |
74 | |
75 #include <windows.h> | |
76 #include <sys/types.h> | |
77 #include <sys/stat.h> | |
78 #include <sys/timeb.h> | |
79 #include <objidl.h> | |
80 #include <shlobj.h> | |
81 | |
82 #include <malloc.h> | |
83 #include <signal.h> | |
84 #include <direct.h> | |
85 #include <errno.h> | |
86 #include <fcntl.h> | |
87 #include <io.h> | |
88 #include <process.h> // For _beginthreadex(), _endthreadex() | |
89 #include <imagehlp.h> // For os::dll_address_to_function_name | |
90 /* for enumerating dll libraries */ | |
91 #include <vdmdbg.h> | |
92 | |
93 // for timer info max values which include all bits | |
94 #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) | |
95 | |
96 // For DLL loading/load error detection | |
97 // Values of PE COFF | |
98 #define IMAGE_FILE_PTR_TO_SIGNATURE 0x3c | |
99 #define IMAGE_FILE_SIGNATURE_LENGTH 4 | |
100 | |
101 static HANDLE main_process; | |
102 static HANDLE main_thread; | |
103 static int main_thread_id; | |
104 | |
105 static FILETIME process_creation_time; | |
106 static FILETIME process_exit_time; | |
107 static FILETIME process_user_time; | |
108 static FILETIME process_kernel_time; | |
109 | |
110 #ifdef _M_IA64 | |
111 #define __CPU__ ia64 | |
112 #elif _M_AMD64 | |
113 #define __CPU__ amd64 | |
114 #else | |
115 #define __CPU__ i486 | |
116 #endif | |
117 | |
118 // save DLL module handle, used by GetModuleFileName | |
119 | |
120 HINSTANCE vm_lib_handle; | |
121 | |
122 BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) { | |
123 switch (reason) { | |
124 case DLL_PROCESS_ATTACH: | |
125 vm_lib_handle = hinst; | |
126 if(ForceTimeHighResolution) | |
127 timeBeginPeriod(1L); | |
128 break; | |
129 case DLL_PROCESS_DETACH: | |
130 if(ForceTimeHighResolution) | |
131 timeEndPeriod(1L); | |
132 break; | |
133 default: | |
134 break; | |
135 } | |
136 return true; | |
137 } | |
138 | |
139 static inline double fileTimeAsDouble(FILETIME* time) { | |
140 const double high = (double) ((unsigned int) ~0); | |
141 const double split = 10000000.0; | |
142 double result = (time->dwLowDateTime / split) + | |
143 time->dwHighDateTime * (high/split); | |
144 return result; | |
145 } | |
146 | |
147 // Implementation of os | |
148 | |
149 bool os::getenv(const char* name, char* buffer, int len) { | |
150 int result = GetEnvironmentVariable(name, buffer, len); | |
151 return result > 0 && result < len; | |
152 } | |
153 | |
154 | |
155 // No setuid programs under Windows. | |
156 bool os::have_special_privileges() { | |
157 return false; | |
158 } | |
159 | |
160 | |
161 // This method is a periodic task to check for misbehaving JNI applications | |
162 // under CheckJNI, we can add any periodic checks here. | |
163 // For Windows at the moment does nothing | |
164 void os::run_periodic_checks() { | |
165 return; | |
166 } | |
167 | |
168 #ifndef _WIN64 | |
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169 // previous UnhandledExceptionFilter, if there is one |
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170 static LPTOP_LEVEL_EXCEPTION_FILTER prev_uef_handler = NULL; |
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171 |
0 | 172 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo); |
173 #endif | |
174 void os::init_system_properties_values() { | |
175 /* sysclasspath, java_home, dll_dir */ | |
176 { | |
177 char *home_path; | |
178 char *dll_path; | |
179 char *pslash; | |
180 char *bin = "\\bin"; | |
181 char home_dir[MAX_PATH]; | |
182 | |
183 if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) { | |
184 os::jvm_path(home_dir, sizeof(home_dir)); | |
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185 // Found the full path to jvm.dll. |
0 | 186 // Now cut the path to <java_home>/jre if we can. |
187 *(strrchr(home_dir, '\\')) = '\0'; /* get rid of \jvm.dll */ | |
188 pslash = strrchr(home_dir, '\\'); | |
189 if (pslash != NULL) { | |
190 *pslash = '\0'; /* get rid of \{client|server} */ | |
191 pslash = strrchr(home_dir, '\\'); | |
192 if (pslash != NULL) | |
193 *pslash = '\0'; /* get rid of \bin */ | |
194 } | |
195 } | |
196 | |
6197 | 197 home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1, mtInternal); |
0 | 198 if (home_path == NULL) |
199 return; | |
200 strcpy(home_path, home_dir); | |
201 Arguments::set_java_home(home_path); | |
202 | |
6197 | 203 dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1, mtInternal); |
0 | 204 if (dll_path == NULL) |
205 return; | |
206 strcpy(dll_path, home_dir); | |
207 strcat(dll_path, bin); | |
208 Arguments::set_dll_dir(dll_path); | |
209 | |
210 if (!set_boot_path('\\', ';')) | |
211 return; | |
212 } | |
213 | |
214 /* library_path */ | |
215 #define EXT_DIR "\\lib\\ext" | |
216 #define BIN_DIR "\\bin" | |
217 #define PACKAGE_DIR "\\Sun\\Java" | |
218 { | |
219 /* Win32 library search order (See the documentation for LoadLibrary): | |
220 * | |
221 * 1. The directory from which application is loaded. | |
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222 * 2. The system wide Java Extensions directory (Java only) |
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223 * 3. System directory (GetSystemDirectory) |
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224 * 4. Windows directory (GetWindowsDirectory) |
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225 * 5. The PATH environment variable |
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226 * 6. The current directory |
0 | 227 */ |
228 | |
229 char *library_path; | |
230 char tmp[MAX_PATH]; | |
231 char *path_str = ::getenv("PATH"); | |
232 | |
233 library_path = NEW_C_HEAP_ARRAY(char, MAX_PATH * 5 + sizeof(PACKAGE_DIR) + | |
6197 | 234 sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10, mtInternal); |
0 | 235 |
236 library_path[0] = '\0'; | |
237 | |
238 GetModuleFileName(NULL, tmp, sizeof(tmp)); | |
239 *(strrchr(tmp, '\\')) = '\0'; | |
240 strcat(library_path, tmp); | |
241 | |
242 GetWindowsDirectory(tmp, sizeof(tmp)); | |
243 strcat(library_path, ";"); | |
244 strcat(library_path, tmp); | |
245 strcat(library_path, PACKAGE_DIR BIN_DIR); | |
246 | |
247 GetSystemDirectory(tmp, sizeof(tmp)); | |
248 strcat(library_path, ";"); | |
249 strcat(library_path, tmp); | |
250 | |
251 GetWindowsDirectory(tmp, sizeof(tmp)); | |
252 strcat(library_path, ";"); | |
253 strcat(library_path, tmp); | |
254 | |
255 if (path_str) { | |
256 strcat(library_path, ";"); | |
257 strcat(library_path, path_str); | |
258 } | |
259 | |
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260 strcat(library_path, ";."); |
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261 |
0 | 262 Arguments::set_library_path(library_path); |
6197 | 263 FREE_C_HEAP_ARRAY(char, library_path, mtInternal); |
0 | 264 } |
265 | |
266 /* Default extensions directory */ | |
267 { | |
268 char path[MAX_PATH]; | |
269 char buf[2 * MAX_PATH + 2 * sizeof(EXT_DIR) + sizeof(PACKAGE_DIR) + 1]; | |
270 GetWindowsDirectory(path, MAX_PATH); | |
271 sprintf(buf, "%s%s;%s%s%s", Arguments::get_java_home(), EXT_DIR, | |
272 path, PACKAGE_DIR, EXT_DIR); | |
273 Arguments::set_ext_dirs(buf); | |
274 } | |
275 #undef EXT_DIR | |
276 #undef BIN_DIR | |
277 #undef PACKAGE_DIR | |
278 | |
279 /* Default endorsed standards directory. */ | |
280 { | |
281 #define ENDORSED_DIR "\\lib\\endorsed" | |
282 size_t len = strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR); | |
6197 | 283 char * buf = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 284 sprintf(buf, "%s%s", Arguments::get_java_home(), ENDORSED_DIR); |
285 Arguments::set_endorsed_dirs(buf); | |
286 #undef ENDORSED_DIR | |
287 } | |
288 | |
289 #ifndef _WIN64 | |
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290 // set our UnhandledExceptionFilter and save any previous one |
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291 prev_uef_handler = SetUnhandledExceptionFilter(Handle_FLT_Exception); |
0 | 292 #endif |
293 | |
294 // Done | |
295 return; | |
296 } | |
297 | |
298 void os::breakpoint() { | |
299 DebugBreak(); | |
300 } | |
301 | |
302 // Invoked from the BREAKPOINT Macro | |
303 extern "C" void breakpoint() { | |
304 os::breakpoint(); | |
305 } | |
306 | |
6197 | 307 /* |
308 * RtlCaptureStackBackTrace Windows API may not exist prior to Windows XP. | |
309 * So far, this method is only used by Native Memory Tracking, which is | |
310 * only supported on Windows XP or later. | |
311 */ | |
312 address os::get_caller_pc(int n) { | |
313 #ifdef _NMT_NOINLINE_ | |
314 n ++; | |
315 #endif | |
316 address pc; | |
317 if (os::Kernel32Dll::RtlCaptureStackBackTrace(n + 1, 1, (PVOID*)&pc, NULL) == 1) { | |
318 return pc; | |
319 } | |
320 return NULL; | |
321 } | |
322 | |
323 | |
0 | 324 // os::current_stack_base() |
325 // | |
326 // Returns the base of the stack, which is the stack's | |
327 // starting address. This function must be called | |
328 // while running on the stack of the thread being queried. | |
329 | |
330 address os::current_stack_base() { | |
331 MEMORY_BASIC_INFORMATION minfo; | |
332 address stack_bottom; | |
333 size_t stack_size; | |
334 | |
335 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
336 stack_bottom = (address)minfo.AllocationBase; | |
337 stack_size = minfo.RegionSize; | |
338 | |
339 // Add up the sizes of all the regions with the same | |
340 // AllocationBase. | |
341 while( 1 ) | |
342 { | |
343 VirtualQuery(stack_bottom+stack_size, &minfo, sizeof(minfo)); | |
344 if ( stack_bottom == (address)minfo.AllocationBase ) | |
345 stack_size += minfo.RegionSize; | |
346 else | |
347 break; | |
348 } | |
349 | |
350 #ifdef _M_IA64 | |
351 // IA64 has memory and register stacks | |
7994 | 352 // |
353 // This is the stack layout you get on NT/IA64 if you specify 1MB stack limit | |
354 // at thread creation (1MB backing store growing upwards, 1MB memory stack | |
355 // growing downwards, 2MB summed up) | |
356 // | |
357 // ... | |
358 // ------- top of stack (high address) ----- | |
359 // | | |
360 // | 1MB | |
361 // | Backing Store (Register Stack) | |
362 // | | |
363 // | / \ | |
364 // | | | |
365 // | | | |
366 // | | | |
367 // ------------------------ stack base ----- | |
368 // | 1MB | |
369 // | Memory Stack | |
370 // | | |
371 // | | | |
372 // | | | |
373 // | | | |
374 // | \ / | |
375 // | | |
376 // ----- bottom of stack (low address) ----- | |
377 // ... | |
378 | |
0 | 379 stack_size = stack_size / 2; |
380 #endif | |
381 return stack_bottom + stack_size; | |
382 } | |
383 | |
384 size_t os::current_stack_size() { | |
385 size_t sz; | |
386 MEMORY_BASIC_INFORMATION minfo; | |
387 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
388 sz = (size_t)os::current_stack_base() - (size_t)minfo.AllocationBase; | |
389 return sz; | |
390 } | |
391 | |
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392 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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393 const struct tm* time_struct_ptr = localtime(clock); |
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394 if (time_struct_ptr != NULL) { |
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395 *res = *time_struct_ptr; |
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396 return res; |
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397 } |
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398 return NULL; |
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399 } |
0 | 400 |
401 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo); | |
402 | |
403 // Thread start routine for all new Java threads | |
404 static unsigned __stdcall java_start(Thread* thread) { | |
405 // Try to randomize the cache line index of hot stack frames. | |
406 // This helps when threads of the same stack traces evict each other's | |
407 // cache lines. The threads can be either from the same JVM instance, or | |
408 // from different JVM instances. The benefit is especially true for | |
409 // processors with hyperthreading technology. | |
410 static int counter = 0; | |
411 int pid = os::current_process_id(); | |
412 _alloca(((pid ^ counter++) & 7) * 128); | |
413 | |
414 OSThread* osthr = thread->osthread(); | |
415 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
416 | |
417 if (UseNUMA) { | |
418 int lgrp_id = os::numa_get_group_id(); | |
419 if (lgrp_id != -1) { | |
420 thread->set_lgrp_id(lgrp_id); | |
421 } | |
422 } | |
423 | |
424 | |
6916 | 425 // Install a win32 structured exception handler around every thread created |
426 // by VM, so VM can genrate error dump when an exception occurred in non- | |
427 // Java thread (e.g. VM thread). | |
428 __try { | |
429 thread->run(); | |
430 } __except(topLevelExceptionFilter( | |
431 (_EXCEPTION_POINTERS*)_exception_info())) { | |
432 // Nothing to do. | |
0 | 433 } |
434 | |
435 // One less thread is executing | |
436 // When the VMThread gets here, the main thread may have already exited | |
437 // which frees the CodeHeap containing the Atomic::add code | |
438 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
439 Atomic::dec_ptr((intptr_t*)&os::win32::_os_thread_count); | |
440 } | |
441 | |
442 return 0; | |
443 } | |
444 | |
445 static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle, int thread_id) { | |
446 // Allocate the OSThread object | |
447 OSThread* osthread = new OSThread(NULL, NULL); | |
448 if (osthread == NULL) return NULL; | |
449 | |
450 // Initialize support for Java interrupts | |
451 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
452 if (interrupt_event == NULL) { | |
453 delete osthread; | |
454 return NULL; | |
455 } | |
456 osthread->set_interrupt_event(interrupt_event); | |
457 | |
458 // Store info on the Win32 thread into the OSThread | |
459 osthread->set_thread_handle(thread_handle); | |
460 osthread->set_thread_id(thread_id); | |
461 | |
462 if (UseNUMA) { | |
463 int lgrp_id = os::numa_get_group_id(); | |
464 if (lgrp_id != -1) { | |
465 thread->set_lgrp_id(lgrp_id); | |
466 } | |
467 } | |
468 | |
469 // Initial thread state is INITIALIZED, not SUSPENDED | |
470 osthread->set_state(INITIALIZED); | |
471 | |
472 return osthread; | |
473 } | |
474 | |
475 | |
476 bool os::create_attached_thread(JavaThread* thread) { | |
477 #ifdef ASSERT | |
478 thread->verify_not_published(); | |
479 #endif | |
480 HANDLE thread_h; | |
481 if (!DuplicateHandle(main_process, GetCurrentThread(), GetCurrentProcess(), | |
482 &thread_h, THREAD_ALL_ACCESS, false, 0)) { | |
483 fatal("DuplicateHandle failed\n"); | |
484 } | |
485 OSThread* osthread = create_os_thread(thread, thread_h, | |
486 (int)current_thread_id()); | |
487 if (osthread == NULL) { | |
488 return false; | |
489 } | |
490 | |
491 // Initial thread state is RUNNABLE | |
492 osthread->set_state(RUNNABLE); | |
493 | |
494 thread->set_osthread(osthread); | |
495 return true; | |
496 } | |
497 | |
498 bool os::create_main_thread(JavaThread* thread) { | |
499 #ifdef ASSERT | |
500 thread->verify_not_published(); | |
501 #endif | |
502 if (_starting_thread == NULL) { | |
503 _starting_thread = create_os_thread(thread, main_thread, main_thread_id); | |
504 if (_starting_thread == NULL) { | |
505 return false; | |
506 } | |
507 } | |
508 | |
509 // The primordial thread is runnable from the start) | |
510 _starting_thread->set_state(RUNNABLE); | |
511 | |
512 thread->set_osthread(_starting_thread); | |
513 return true; | |
514 } | |
515 | |
516 // Allocate and initialize a new OSThread | |
517 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
518 unsigned thread_id; | |
519 | |
520 // Allocate the OSThread object | |
521 OSThread* osthread = new OSThread(NULL, NULL); | |
522 if (osthread == NULL) { | |
523 return false; | |
524 } | |
525 | |
526 // Initialize support for Java interrupts | |
527 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
528 if (interrupt_event == NULL) { | |
529 delete osthread; | |
530 return NULL; | |
531 } | |
532 osthread->set_interrupt_event(interrupt_event); | |
533 osthread->set_interrupted(false); | |
534 | |
535 thread->set_osthread(osthread); | |
536 | |
537 if (stack_size == 0) { | |
538 switch (thr_type) { | |
539 case os::java_thread: | |
540 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
541 if (JavaThread::stack_size_at_create() > 0) | |
542 stack_size = JavaThread::stack_size_at_create(); | |
543 break; | |
544 case os::compiler_thread: | |
545 if (CompilerThreadStackSize > 0) { | |
546 stack_size = (size_t)(CompilerThreadStackSize * K); | |
547 break; | |
548 } // else fall through: | |
549 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
550 case os::vm_thread: | |
551 case os::pgc_thread: | |
552 case os::cgc_thread: | |
553 case os::watcher_thread: | |
554 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
555 break; | |
556 } | |
557 } | |
558 | |
559 // Create the Win32 thread | |
560 // | |
561 // Contrary to what MSDN document says, "stack_size" in _beginthreadex() | |
562 // does not specify stack size. Instead, it specifies the size of | |
563 // initially committed space. The stack size is determined by | |
564 // PE header in the executable. If the committed "stack_size" is larger | |
565 // than default value in the PE header, the stack is rounded up to the | |
566 // nearest multiple of 1MB. For example if the launcher has default | |
567 // stack size of 320k, specifying any size less than 320k does not | |
568 // affect the actual stack size at all, it only affects the initial | |
569 // commitment. On the other hand, specifying 'stack_size' larger than | |
570 // default value may cause significant increase in memory usage, because | |
571 // not only the stack space will be rounded up to MB, but also the | |
572 // entire space is committed upfront. | |
573 // | |
574 // Finally Windows XP added a new flag 'STACK_SIZE_PARAM_IS_A_RESERVATION' | |
575 // for CreateThread() that can treat 'stack_size' as stack size. However we | |
576 // are not supposed to call CreateThread() directly according to MSDN | |
577 // document because JVM uses C runtime library. The good news is that the | |
578 // flag appears to work with _beginthredex() as well. | |
579 | |
580 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION | |
581 #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000) | |
582 #endif | |
583 | |
584 HANDLE thread_handle = | |
585 (HANDLE)_beginthreadex(NULL, | |
586 (unsigned)stack_size, | |
587 (unsigned (__stdcall *)(void*)) java_start, | |
588 thread, | |
589 CREATE_SUSPENDED | STACK_SIZE_PARAM_IS_A_RESERVATION, | |
590 &thread_id); | |
591 if (thread_handle == NULL) { | |
592 // perhaps STACK_SIZE_PARAM_IS_A_RESERVATION is not supported, try again | |
593 // without the flag. | |
594 thread_handle = | |
595 (HANDLE)_beginthreadex(NULL, | |
596 (unsigned)stack_size, | |
597 (unsigned (__stdcall *)(void*)) java_start, | |
598 thread, | |
599 CREATE_SUSPENDED, | |
600 &thread_id); | |
601 } | |
602 if (thread_handle == NULL) { | |
603 // Need to clean up stuff we've allocated so far | |
604 CloseHandle(osthread->interrupt_event()); | |
605 thread->set_osthread(NULL); | |
606 delete osthread; | |
607 return NULL; | |
608 } | |
609 | |
610 Atomic::inc_ptr((intptr_t*)&os::win32::_os_thread_count); | |
611 | |
612 // Store info on the Win32 thread into the OSThread | |
613 osthread->set_thread_handle(thread_handle); | |
614 osthread->set_thread_id(thread_id); | |
615 | |
616 // Initial thread state is INITIALIZED, not SUSPENDED | |
617 osthread->set_state(INITIALIZED); | |
618 | |
619 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
620 return true; | |
621 } | |
622 | |
623 | |
624 // Free Win32 resources related to the OSThread | |
625 void os::free_thread(OSThread* osthread) { | |
626 assert(osthread != NULL, "osthread not set"); | |
627 CloseHandle(osthread->thread_handle()); | |
628 CloseHandle(osthread->interrupt_event()); | |
629 delete osthread; | |
630 } | |
631 | |
632 | |
633 static int has_performance_count = 0; | |
634 static jlong first_filetime; | |
635 static jlong initial_performance_count; | |
636 static jlong performance_frequency; | |
637 | |
638 | |
639 jlong as_long(LARGE_INTEGER x) { | |
640 jlong result = 0; // initialization to avoid warning | |
641 set_high(&result, x.HighPart); | |
642 set_low(&result, x.LowPart); | |
643 return result; | |
644 } | |
645 | |
646 | |
647 jlong os::elapsed_counter() { | |
648 LARGE_INTEGER count; | |
649 if (has_performance_count) { | |
650 QueryPerformanceCounter(&count); | |
651 return as_long(count) - initial_performance_count; | |
652 } else { | |
653 FILETIME wt; | |
654 GetSystemTimeAsFileTime(&wt); | |
655 return (jlong_from(wt.dwHighDateTime, wt.dwLowDateTime) - first_filetime); | |
656 } | |
657 } | |
658 | |
659 | |
660 jlong os::elapsed_frequency() { | |
661 if (has_performance_count) { | |
662 return performance_frequency; | |
663 } else { | |
664 // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601. | |
665 return 10000000; | |
666 } | |
667 } | |
668 | |
669 | |
670 julong os::available_memory() { | |
671 return win32::available_memory(); | |
672 } | |
673 | |
674 julong os::win32::available_memory() { | |
877
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675 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
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676 // value if total memory is larger than 4GB |
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677 MEMORYSTATUSEX ms; |
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678 ms.dwLength = sizeof(ms); |
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679 GlobalMemoryStatusEx(&ms); |
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680 |
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681 return (julong)ms.ullAvailPhys; |
0 | 682 } |
683 | |
684 julong os::physical_memory() { | |
685 return win32::physical_memory(); | |
686 } | |
687 | |
688 julong os::allocatable_physical_memory(julong size) { | |
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689 #ifdef _LP64 |
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690 return size; |
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691 #else |
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692 // Limit to 1400m because of the 2gb address space wall |
0 | 693 return MIN2(size, (julong)1400*M); |
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694 #endif |
0 | 695 } |
696 | |
697 // VC6 lacks DWORD_PTR | |
698 #if _MSC_VER < 1300 | |
699 typedef UINT_PTR DWORD_PTR; | |
700 #endif | |
701 | |
702 int os::active_processor_count() { | |
703 DWORD_PTR lpProcessAffinityMask = 0; | |
704 DWORD_PTR lpSystemAffinityMask = 0; | |
705 int proc_count = processor_count(); | |
706 if (proc_count <= sizeof(UINT_PTR) * BitsPerByte && | |
707 GetProcessAffinityMask(GetCurrentProcess(), &lpProcessAffinityMask, &lpSystemAffinityMask)) { | |
708 // Nof active processors is number of bits in process affinity mask | |
709 int bitcount = 0; | |
710 while (lpProcessAffinityMask != 0) { | |
711 lpProcessAffinityMask = lpProcessAffinityMask & (lpProcessAffinityMask-1); | |
712 bitcount++; | |
713 } | |
714 return bitcount; | |
715 } else { | |
716 return proc_count; | |
717 } | |
718 } | |
719 | |
4006 | 720 void os::set_native_thread_name(const char *name) { |
721 // Not yet implemented. | |
722 return; | |
723 } | |
724 | |
0 | 725 bool os::distribute_processes(uint length, uint* distribution) { |
726 // Not yet implemented. | |
727 return false; | |
728 } | |
729 | |
730 bool os::bind_to_processor(uint processor_id) { | |
731 // Not yet implemented. | |
732 return false; | |
733 } | |
734 | |
735 static void initialize_performance_counter() { | |
736 LARGE_INTEGER count; | |
737 if (QueryPerformanceFrequency(&count)) { | |
738 has_performance_count = 1; | |
739 performance_frequency = as_long(count); | |
740 QueryPerformanceCounter(&count); | |
741 initial_performance_count = as_long(count); | |
742 } else { | |
743 has_performance_count = 0; | |
744 FILETIME wt; | |
745 GetSystemTimeAsFileTime(&wt); | |
746 first_filetime = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
747 } | |
748 } | |
749 | |
750 | |
751 double os::elapsedTime() { | |
752 return (double) elapsed_counter() / (double) elapsed_frequency(); | |
753 } | |
754 | |
755 | |
756 // Windows format: | |
757 // The FILETIME structure is a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601. | |
758 // Java format: | |
759 // Java standards require the number of milliseconds since 1/1/1970 | |
760 | |
761 // Constant offset - calculated using offset() | |
762 static jlong _offset = 116444736000000000; | |
763 // Fake time counter for reproducible results when debugging | |
764 static jlong fake_time = 0; | |
765 | |
766 #ifdef ASSERT | |
767 // Just to be safe, recalculate the offset in debug mode | |
768 static jlong _calculated_offset = 0; | |
769 static int _has_calculated_offset = 0; | |
770 | |
771 jlong offset() { | |
772 if (_has_calculated_offset) return _calculated_offset; | |
773 SYSTEMTIME java_origin; | |
774 java_origin.wYear = 1970; | |
775 java_origin.wMonth = 1; | |
776 java_origin.wDayOfWeek = 0; // ignored | |
777 java_origin.wDay = 1; | |
778 java_origin.wHour = 0; | |
779 java_origin.wMinute = 0; | |
780 java_origin.wSecond = 0; | |
781 java_origin.wMilliseconds = 0; | |
782 FILETIME jot; | |
783 if (!SystemTimeToFileTime(&java_origin, &jot)) { | |
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784 fatal(err_msg("Error = %d\nWindows error", GetLastError())); |
0 | 785 } |
786 _calculated_offset = jlong_from(jot.dwHighDateTime, jot.dwLowDateTime); | |
787 _has_calculated_offset = 1; | |
788 assert(_calculated_offset == _offset, "Calculated and constant time offsets must be equal"); | |
789 return _calculated_offset; | |
790 } | |
791 #else | |
792 jlong offset() { | |
793 return _offset; | |
794 } | |
795 #endif | |
796 | |
797 jlong windows_to_java_time(FILETIME wt) { | |
798 jlong a = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
799 return (a - offset()) / 10000; | |
800 } | |
801 | |
802 FILETIME java_to_windows_time(jlong l) { | |
803 jlong a = (l * 10000) + offset(); | |
804 FILETIME result; | |
805 result.dwHighDateTime = high(a); | |
806 result.dwLowDateTime = low(a); | |
807 return result; | |
808 } | |
809 | |
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810 // For now, we say that Windows does not support vtime. I have no idea |
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811 // whether it can actually be made to (DLD, 9/13/05). |
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812 |
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813 bool os::supports_vtime() { return false; } |
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814 bool os::enable_vtime() { return false; } |
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815 bool os::vtime_enabled() { return false; } |
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816 double os::elapsedVTime() { |
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817 // better than nothing, but not much |
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818 return elapsedTime(); |
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819 } |
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820 |
0 | 821 jlong os::javaTimeMillis() { |
822 if (UseFakeTimers) { | |
823 return fake_time++; | |
824 } else { | |
61 | 825 FILETIME wt; |
826 GetSystemTimeAsFileTime(&wt); | |
827 return windows_to_java_time(wt); | |
0 | 828 } |
829 } | |
830 | |
831 jlong os::javaTimeNanos() { | |
832 if (!has_performance_count) { | |
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833 return javaTimeMillis() * NANOSECS_PER_MILLISEC; // the best we can do. |
0 | 834 } else { |
835 LARGE_INTEGER current_count; | |
836 QueryPerformanceCounter(¤t_count); | |
837 double current = as_long(current_count); | |
838 double freq = performance_frequency; | |
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839 jlong time = (jlong)((current/freq) * NANOSECS_PER_SEC); |
0 | 840 return time; |
841 } | |
842 } | |
843 | |
844 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
845 if (!has_performance_count) { | |
846 // javaTimeMillis() doesn't have much percision, | |
847 // but it is not going to wrap -- so all 64 bits | |
848 info_ptr->max_value = ALL_64_BITS; | |
849 | |
850 // this is a wall clock timer, so may skip | |
851 info_ptr->may_skip_backward = true; | |
852 info_ptr->may_skip_forward = true; | |
853 } else { | |
854 jlong freq = performance_frequency; | |
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855 if (freq < NANOSECS_PER_SEC) { |
0 | 856 // the performance counter is 64 bits and we will |
857 // be multiplying it -- so no wrap in 64 bits | |
858 info_ptr->max_value = ALL_64_BITS; | |
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859 } else if (freq > NANOSECS_PER_SEC) { |
0 | 860 // use the max value the counter can reach to |
861 // determine the max value which could be returned | |
862 julong max_counter = (julong)ALL_64_BITS; | |
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863 info_ptr->max_value = (jlong)(max_counter / (freq / NANOSECS_PER_SEC)); |
0 | 864 } else { |
865 // the performance counter is 64 bits and we will | |
866 // be using it directly -- so no wrap in 64 bits | |
867 info_ptr->max_value = ALL_64_BITS; | |
868 } | |
869 | |
870 // using a counter, so no skipping | |
871 info_ptr->may_skip_backward = false; | |
872 info_ptr->may_skip_forward = false; | |
873 } | |
874 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
875 } | |
876 | |
877 char* os::local_time_string(char *buf, size_t buflen) { | |
878 SYSTEMTIME st; | |
879 GetLocalTime(&st); | |
880 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
881 st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond); | |
882 return buf; | |
883 } | |
884 | |
885 bool os::getTimesSecs(double* process_real_time, | |
886 double* process_user_time, | |
887 double* process_system_time) { | |
888 HANDLE h_process = GetCurrentProcess(); | |
889 FILETIME create_time, exit_time, kernel_time, user_time; | |
890 BOOL result = GetProcessTimes(h_process, | |
891 &create_time, | |
892 &exit_time, | |
893 &kernel_time, | |
894 &user_time); | |
895 if (result != 0) { | |
896 FILETIME wt; | |
897 GetSystemTimeAsFileTime(&wt); | |
898 jlong rtc_millis = windows_to_java_time(wt); | |
899 jlong user_millis = windows_to_java_time(user_time); | |
900 jlong system_millis = windows_to_java_time(kernel_time); | |
901 *process_real_time = ((double) rtc_millis) / ((double) MILLIUNITS); | |
902 *process_user_time = ((double) user_millis) / ((double) MILLIUNITS); | |
903 *process_system_time = ((double) system_millis) / ((double) MILLIUNITS); | |
904 return true; | |
905 } else { | |
906 return false; | |
907 } | |
908 } | |
909 | |
910 void os::shutdown() { | |
911 | |
912 // allow PerfMemory to attempt cleanup of any persistent resources | |
913 perfMemory_exit(); | |
914 | |
915 // flush buffered output, finish log files | |
916 ostream_abort(); | |
917 | |
918 // Check for abort hook | |
919 abort_hook_t abort_hook = Arguments::abort_hook(); | |
920 if (abort_hook != NULL) { | |
921 abort_hook(); | |
922 } | |
923 } | |
924 | |
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925 |
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926 static BOOL (WINAPI *_MiniDumpWriteDump) ( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
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927 PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION); |
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928 |
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929 void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) { |
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930 HINSTANCE dbghelp; |
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931 EXCEPTION_POINTERS ep; |
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932 MINIDUMP_EXCEPTION_INFORMATION mei; |
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933 MINIDUMP_EXCEPTION_INFORMATION* pmei; |
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934 |
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935 HANDLE hProcess = GetCurrentProcess(); |
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936 DWORD processId = GetCurrentProcessId(); |
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937 HANDLE dumpFile; |
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938 MINIDUMP_TYPE dumpType; |
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939 static const char* cwd; |
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940 |
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941 // If running on a client version of Windows and user has not explicitly enabled dumping |
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942 if (!os::win32::is_windows_server() && !CreateMinidumpOnCrash) { |
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943 VMError::report_coredump_status("Minidumps are not enabled by default on client versions of Windows", false); |
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944 return; |
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945 // If running on a server version of Windows and user has explictly disabled dumping |
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946 } else if (os::win32::is_windows_server() && !FLAG_IS_DEFAULT(CreateMinidumpOnCrash) && !CreateMinidumpOnCrash) { |
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947 VMError::report_coredump_status("Minidump has been disabled from the command line", false); |
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948 return; |
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949 } |
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950 |
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951 dbghelp = os::win32::load_Windows_dll("DBGHELP.DLL", NULL, 0); |
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952 |
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953 if (dbghelp == NULL) { |
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954 VMError::report_coredump_status("Failed to load dbghelp.dll", false); |
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955 return; |
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956 } |
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957 |
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958 _MiniDumpWriteDump = CAST_TO_FN_PTR( |
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959 BOOL(WINAPI *)( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
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960 PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION), |
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961 GetProcAddress(dbghelp, "MiniDumpWriteDump")); |
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962 |
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963 if (_MiniDumpWriteDump == NULL) { |
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964 VMError::report_coredump_status("Failed to find MiniDumpWriteDump() in module dbghelp.dll", false); |
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965 return; |
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966 } |
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967 |
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968 dumpType = (MINIDUMP_TYPE)(MiniDumpWithFullMemory | MiniDumpWithHandleData); |
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969 |
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970 // Older versions of dbghelp.h doesn't contain all the dumptypes we want, dbghelp.h with |
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971 // API_VERSION_NUMBER 11 or higher contains the ones we want though |
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972 #if API_VERSION_NUMBER >= 11 |
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973 dumpType = (MINIDUMP_TYPE)(dumpType | MiniDumpWithFullMemoryInfo | MiniDumpWithThreadInfo | |
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974 MiniDumpWithUnloadedModules); |
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975 #endif |
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976 |
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977 cwd = get_current_directory(NULL, 0); |
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978 jio_snprintf(buffer, bufferSize, "%s\\hs_err_pid%u.mdmp",cwd, current_process_id()); |
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979 dumpFile = CreateFile(buffer, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
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980 |
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981 if (dumpFile == INVALID_HANDLE_VALUE) { |
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982 VMError::report_coredump_status("Failed to create file for dumping", false); |
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983 return; |
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984 } |
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985 if (exceptionRecord != NULL && contextRecord != NULL) { |
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986 ep.ContextRecord = (PCONTEXT) contextRecord; |
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987 ep.ExceptionRecord = (PEXCEPTION_RECORD) exceptionRecord; |
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988 |
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989 mei.ThreadId = GetCurrentThreadId(); |
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990 mei.ExceptionPointers = &ep; |
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991 pmei = &mei; |
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992 } else { |
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993 pmei = NULL; |
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|
994 } |
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|
995 |
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996 |
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997 // Older versions of dbghelp.dll (the one shipped with Win2003 for example) may not support all |
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998 // the dump types we really want. If first call fails, lets fall back to just use MiniDumpWithFullMemory then. |
3240
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999 if (_MiniDumpWriteDump(hProcess, processId, dumpFile, dumpType, pmei, NULL, NULL) == false && |
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1000 _MiniDumpWriteDump(hProcess, processId, dumpFile, (MINIDUMP_TYPE)MiniDumpWithFullMemory, pmei, NULL, NULL) == false) { |
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1001 VMError::report_coredump_status("Call to MiniDumpWriteDump() failed", false); |
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1002 } else { |
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1003 VMError::report_coredump_status(buffer, true); |
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1004 } |
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1005 |
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1006 CloseHandle(dumpFile); |
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1007 } |
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1008 |
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1009 |
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1010 |
0 | 1011 void os::abort(bool dump_core) |
1012 { | |
1013 os::shutdown(); | |
1014 // no core dump on Windows | |
1015 ::exit(1); | |
1016 } | |
1017 | |
1018 // Die immediately, no exit hook, no abort hook, no cleanup. | |
1019 void os::die() { | |
1020 _exit(-1); | |
1021 } | |
1022 | |
1023 // Directory routines copied from src/win32/native/java/io/dirent_md.c | |
1024 // * dirent_md.c 1.15 00/02/02 | |
1025 // | |
1026 // The declarations for DIR and struct dirent are in jvm_win32.h. | |
1027 | |
1028 /* Caller must have already run dirname through JVM_NativePath, which removes | |
1029 duplicate slashes and converts all instances of '/' into '\\'. */ | |
1030 | |
1031 DIR * | |
1032 os::opendir(const char *dirname) | |
1033 { | |
1034 assert(dirname != NULL, "just checking"); // hotspot change | |
6197 | 1035 DIR *dirp = (DIR *)malloc(sizeof(DIR), mtInternal); |
0 | 1036 DWORD fattr; // hotspot change |
1037 char alt_dirname[4] = { 0, 0, 0, 0 }; | |
1038 | |
1039 if (dirp == 0) { | |
1040 errno = ENOMEM; | |
1041 return 0; | |
1042 } | |
1043 | |
1044 /* | |
1045 * Win32 accepts "\" in its POSIX stat(), but refuses to treat it | |
1046 * as a directory in FindFirstFile(). We detect this case here and | |
1047 * prepend the current drive name. | |
1048 */ | |
1049 if (dirname[1] == '\0' && dirname[0] == '\\') { | |
1050 alt_dirname[0] = _getdrive() + 'A' - 1; | |
1051 alt_dirname[1] = ':'; | |
1052 alt_dirname[2] = '\\'; | |
1053 alt_dirname[3] = '\0'; | |
1054 dirname = alt_dirname; | |
1055 } | |
1056 | |
6197 | 1057 dirp->path = (char *)malloc(strlen(dirname) + 5, mtInternal); |
0 | 1058 if (dirp->path == 0) { |
6197 | 1059 free(dirp, mtInternal); |
0 | 1060 errno = ENOMEM; |
1061 return 0; | |
1062 } | |
1063 strcpy(dirp->path, dirname); | |
1064 | |
1065 fattr = GetFileAttributes(dirp->path); | |
1066 if (fattr == 0xffffffff) { | |
6197 | 1067 free(dirp->path, mtInternal); |
1068 free(dirp, mtInternal); | |
0 | 1069 errno = ENOENT; |
1070 return 0; | |
1071 } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) { | |
6197 | 1072 free(dirp->path, mtInternal); |
1073 free(dirp, mtInternal); | |
0 | 1074 errno = ENOTDIR; |
1075 return 0; | |
1076 } | |
1077 | |
1078 /* Append "*.*", or possibly "\\*.*", to path */ | |
1079 if (dirp->path[1] == ':' | |
1080 && (dirp->path[2] == '\0' | |
1081 || (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) { | |
1082 /* No '\\' needed for cases like "Z:" or "Z:\" */ | |
1083 strcat(dirp->path, "*.*"); | |
1084 } else { | |
1085 strcat(dirp->path, "\\*.*"); | |
1086 } | |
1087 | |
1088 dirp->handle = FindFirstFile(dirp->path, &dirp->find_data); | |
1089 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
1090 if (GetLastError() != ERROR_FILE_NOT_FOUND) { | |
6197 | 1091 free(dirp->path, mtInternal); |
1092 free(dirp, mtInternal); | |
0 | 1093 errno = EACCES; |
1094 return 0; | |
1095 } | |
1096 } | |
1097 return dirp; | |
1098 } | |
1099 | |
1100 /* parameter dbuf unused on Windows */ | |
1101 | |
1102 struct dirent * | |
1103 os::readdir(DIR *dirp, dirent *dbuf) | |
1104 { | |
1105 assert(dirp != NULL, "just checking"); // hotspot change | |
1106 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
1107 return 0; | |
1108 } | |
1109 | |
1110 strcpy(dirp->dirent.d_name, dirp->find_data.cFileName); | |
1111 | |
1112 if (!FindNextFile(dirp->handle, &dirp->find_data)) { | |
1113 if (GetLastError() == ERROR_INVALID_HANDLE) { | |
1114 errno = EBADF; | |
1115 return 0; | |
1116 } | |
1117 FindClose(dirp->handle); | |
1118 dirp->handle = INVALID_HANDLE_VALUE; | |
1119 } | |
1120 | |
1121 return &dirp->dirent; | |
1122 } | |
1123 | |
1124 int | |
1125 os::closedir(DIR *dirp) | |
1126 { | |
1127 assert(dirp != NULL, "just checking"); // hotspot change | |
1128 if (dirp->handle != INVALID_HANDLE_VALUE) { | |
1129 if (!FindClose(dirp->handle)) { | |
1130 errno = EBADF; | |
1131 return -1; | |
1132 } | |
1133 dirp->handle = INVALID_HANDLE_VALUE; | |
1134 } | |
6197 | 1135 free(dirp->path, mtInternal); |
1136 free(dirp, mtInternal); | |
0 | 1137 return 0; |
1138 } | |
1139 | |
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1140 // This must be hard coded because it's the system's temporary |
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1141 // directory not the java application's temp directory, ala java.io.tmpdir. |
1353
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1142 const char* os::get_temp_directory() { |
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1143 static char path_buf[MAX_PATH]; |
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1144 if (GetTempPath(MAX_PATH, path_buf)>0) |
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1145 return path_buf; |
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1146 else{ |
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1147 path_buf[0]='\0'; |
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1148 return path_buf; |
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1149 } |
0 | 1150 } |
1151 | |
691 | 1152 static bool file_exists(const char* filename) { |
1153 if (filename == NULL || strlen(filename) == 0) { | |
1154 return false; | |
1155 } | |
1156 return GetFileAttributes(filename) != INVALID_FILE_ATTRIBUTES; | |
1157 } | |
1158 | |
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1159 bool os::dll_build_name(char *buffer, size_t buflen, |
691 | 1160 const char* pname, const char* fname) { |
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1161 bool retval = false; |
691 | 1162 const size_t pnamelen = pname ? strlen(pname) : 0; |
1163 const char c = (pnamelen > 0) ? pname[pnamelen-1] : 0; | |
1164 | |
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1165 // Return error on buffer overflow. |
691 | 1166 if (pnamelen + strlen(fname) + 10 > buflen) { |
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1167 return retval; |
691 | 1168 } |
1169 | |
1170 if (pnamelen == 0) { | |
1171 jio_snprintf(buffer, buflen, "%s.dll", fname); | |
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1172 retval = true; |
691 | 1173 } else if (c == ':' || c == '\\') { |
1174 jio_snprintf(buffer, buflen, "%s%s.dll", pname, fname); | |
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1175 retval = true; |
691 | 1176 } else if (strchr(pname, *os::path_separator()) != NULL) { |
1177 int n; | |
1178 char** pelements = split_path(pname, &n); | |
1179 for (int i = 0 ; i < n ; i++) { | |
1180 char* path = pelements[i]; | |
1181 // Really shouldn't be NULL, but check can't hurt | |
1182 size_t plen = (path == NULL) ? 0 : strlen(path); | |
1183 if (plen == 0) { | |
1184 continue; // skip the empty path values | |
1185 } | |
1186 const char lastchar = path[plen - 1]; | |
1187 if (lastchar == ':' || lastchar == '\\') { | |
1188 jio_snprintf(buffer, buflen, "%s%s.dll", path, fname); | |
1189 } else { | |
1190 jio_snprintf(buffer, buflen, "%s\\%s.dll", path, fname); | |
1191 } | |
1192 if (file_exists(buffer)) { | |
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1193 retval = true; |
691 | 1194 break; |
1195 } | |
242 | 1196 } |
691 | 1197 // release the storage |
1198 for (int i = 0 ; i < n ; i++) { | |
1199 if (pelements[i] != NULL) { | |
6197 | 1200 FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); |
691 | 1201 } |
242 | 1202 } |
691 | 1203 if (pelements != NULL) { |
6197 | 1204 FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); |
691 | 1205 } |
1206 } else { | |
1207 jio_snprintf(buffer, buflen, "%s\\%s.dll", pname, fname); | |
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1208 retval = true; |
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1209 } |
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1210 return retval; |
242 | 1211 } |
1212 | |
0 | 1213 // Needs to be in os specific directory because windows requires another |
1214 // header file <direct.h> | |
1215 const char* os::get_current_directory(char *buf, int buflen) { | |
1216 return _getcwd(buf, buflen); | |
1217 } | |
1218 | |
1219 //----------------------------------------------------------- | |
1220 // Helper functions for fatal error handler | |
1221 #ifdef _WIN64 | |
1222 // Helper routine which returns true if address in | |
1223 // within the NTDLL address space. | |
1224 // | |
1225 static bool _addr_in_ntdll( address addr ) | |
1226 { | |
1227 HMODULE hmod; | |
1228 MODULEINFO minfo; | |
1229 | |
1230 hmod = GetModuleHandle("NTDLL.DLL"); | |
1231 if ( hmod == NULL ) return false; | |
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1232 if ( !os::PSApiDll::GetModuleInformation( GetCurrentProcess(), hmod, |
0 | 1233 &minfo, sizeof(MODULEINFO)) ) |
1234 return false; | |
1235 | |
1236 if ( (addr >= minfo.lpBaseOfDll) && | |
1237 (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage))) | |
1238 return true; | |
1239 else | |
1240 return false; | |
1241 } | |
1242 #endif | |
1243 | |
1244 | |
1245 // Enumerate all modules for a given process ID | |
1246 // | |
1247 // Notice that Windows 95/98/Me and Windows NT/2000/XP have | |
1248 // different API for doing this. We use PSAPI.DLL on NT based | |
1249 // Windows and ToolHelp on 95/98/Me. | |
1250 | |
1251 // Callback function that is called by enumerate_modules() on | |
1252 // every DLL module. | |
1253 // Input parameters: | |
1254 // int pid, | |
1255 // char* module_file_name, | |
1256 // address module_base_addr, | |
1257 // unsigned module_size, | |
1258 // void* param | |
1259 typedef int (*EnumModulesCallbackFunc)(int, char *, address, unsigned, void *); | |
1260 | |
1261 // enumerate_modules for Windows NT, using PSAPI | |
1262 static int _enumerate_modules_winnt( int pid, EnumModulesCallbackFunc func, void * param) | |
1263 { | |
1264 HANDLE hProcess ; | |
1265 | |
1266 # define MAX_NUM_MODULES 128 | |
1267 HMODULE modules[MAX_NUM_MODULES]; | |
1268 static char filename[ MAX_PATH ]; | |
1269 int result = 0; | |
1270 | |
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1271 if (!os::PSApiDll::PSApiAvailable()) { |
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1272 return 0; |
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1273 } |
0 | 1274 |
1275 hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, | |
1276 FALSE, pid ) ; | |
1277 if (hProcess == NULL) return 0; | |
1278 | |
1279 DWORD size_needed; | |
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1280 if (!os::PSApiDll::EnumProcessModules(hProcess, modules, |
0 | 1281 sizeof(modules), &size_needed)) { |
1282 CloseHandle( hProcess ); | |
1283 return 0; | |
1284 } | |
1285 | |
1286 // number of modules that are currently loaded | |
1287 int num_modules = size_needed / sizeof(HMODULE); | |
1288 | |
1289 for (int i = 0; i < MIN2(num_modules, MAX_NUM_MODULES); i++) { | |
1290 // Get Full pathname: | |
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1291 if(!os::PSApiDll::GetModuleFileNameEx(hProcess, modules[i], |
0 | 1292 filename, sizeof(filename))) { |
1293 filename[0] = '\0'; | |
1294 } | |
1295 | |
1296 MODULEINFO modinfo; | |
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1297 if (!os::PSApiDll::GetModuleInformation(hProcess, modules[i], |
0 | 1298 &modinfo, sizeof(modinfo))) { |
1299 modinfo.lpBaseOfDll = NULL; | |
1300 modinfo.SizeOfImage = 0; | |
1301 } | |
1302 | |
1303 // Invoke callback function | |
1304 result = func(pid, filename, (address)modinfo.lpBaseOfDll, | |
1305 modinfo.SizeOfImage, param); | |
1306 if (result) break; | |
1307 } | |
1308 | |
1309 CloseHandle( hProcess ) ; | |
1310 return result; | |
1311 } | |
1312 | |
1313 | |
1314 // enumerate_modules for Windows 95/98/ME, using TOOLHELP | |
1315 static int _enumerate_modules_windows( int pid, EnumModulesCallbackFunc func, void *param) | |
1316 { | |
1317 HANDLE hSnapShot ; | |
1318 static MODULEENTRY32 modentry ; | |
1319 int result = 0; | |
1320 | |
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1321 if (!os::Kernel32Dll::HelpToolsAvailable()) { |
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1322 return 0; |
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1323 } |
0 | 1324 |
1325 // Get a handle to a Toolhelp snapshot of the system | |
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1326 hSnapShot = os::Kernel32Dll::CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid ) ; |
0 | 1327 if( hSnapShot == INVALID_HANDLE_VALUE ) { |
1328 return FALSE ; | |
1329 } | |
1330 | |
1331 // iterate through all modules | |
1332 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
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1333 bool not_done = os::Kernel32Dll::Module32First( hSnapShot, &modentry ) != 0; |
0 | 1334 |
1335 while( not_done ) { | |
1336 // invoke the callback | |
1337 result=func(pid, modentry.szExePath, (address)modentry.modBaseAddr, | |
1338 modentry.modBaseSize, param); | |
1339 if (result) break; | |
1340 | |
1341 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
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1342 not_done = os::Kernel32Dll::Module32Next( hSnapShot, &modentry ) != 0; |
0 | 1343 } |
1344 | |
1345 CloseHandle(hSnapShot); | |
1346 return result; | |
1347 } | |
1348 | |
1349 int enumerate_modules( int pid, EnumModulesCallbackFunc func, void * param ) | |
1350 { | |
1351 // Get current process ID if caller doesn't provide it. | |
1352 if (!pid) pid = os::current_process_id(); | |
1353 | |
1354 if (os::win32::is_nt()) return _enumerate_modules_winnt (pid, func, param); | |
1355 else return _enumerate_modules_windows(pid, func, param); | |
1356 } | |
1357 | |
1358 struct _modinfo { | |
1359 address addr; | |
1360 char* full_path; // point to a char buffer | |
1361 int buflen; // size of the buffer | |
1362 address base_addr; | |
1363 }; | |
1364 | |
1365 static int _locate_module_by_addr(int pid, char * mod_fname, address base_addr, | |
1366 unsigned size, void * param) { | |
1367 struct _modinfo *pmod = (struct _modinfo *)param; | |
1368 if (!pmod) return -1; | |
1369 | |
1370 if (base_addr <= pmod->addr && | |
1371 base_addr+size > pmod->addr) { | |
1372 // if a buffer is provided, copy path name to the buffer | |
1373 if (pmod->full_path) { | |
1374 jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname); | |
1375 } | |
1376 pmod->base_addr = base_addr; | |
1377 return 1; | |
1378 } | |
1379 return 0; | |
1380 } | |
1381 | |
1382 bool os::dll_address_to_library_name(address addr, char* buf, | |
1383 int buflen, int* offset) { | |
1384 // NOTE: the reason we don't use SymGetModuleInfo() is it doesn't always | |
1385 // return the full path to the DLL file, sometimes it returns path | |
1386 // to the corresponding PDB file (debug info); sometimes it only | |
1387 // returns partial path, which makes life painful. | |
1388 | |
1389 struct _modinfo mi; | |
1390 mi.addr = addr; | |
1391 mi.full_path = buf; | |
1392 mi.buflen = buflen; | |
1393 int pid = os::current_process_id(); | |
1394 if (enumerate_modules(pid, _locate_module_by_addr, (void *)&mi)) { | |
1395 // buf already contains path name | |
1396 if (offset) *offset = addr - mi.base_addr; | |
1397 return true; | |
1398 } else { | |
1399 if (buf) buf[0] = '\0'; | |
1400 if (offset) *offset = -1; | |
1401 return false; | |
1402 } | |
1403 } | |
1404 | |
1405 bool os::dll_address_to_function_name(address addr, char *buf, | |
1406 int buflen, int *offset) { | |
4803 | 1407 if (Decoder::decode(addr, buf, buflen, offset)) { |
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1408 return true; |
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1409 } |
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1410 if (offset != NULL) *offset = -1; |
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1411 if (buf != NULL) buf[0] = '\0'; |
0 | 1412 return false; |
1413 } | |
1414 | |
1415 // save the start and end address of jvm.dll into param[0] and param[1] | |
1416 static int _locate_jvm_dll(int pid, char* mod_fname, address base_addr, | |
1417 unsigned size, void * param) { | |
1418 if (!param) return -1; | |
1419 | |
1420 if (base_addr <= (address)_locate_jvm_dll && | |
1421 base_addr+size > (address)_locate_jvm_dll) { | |
1422 ((address*)param)[0] = base_addr; | |
1423 ((address*)param)[1] = base_addr + size; | |
1424 return 1; | |
1425 } | |
1426 return 0; | |
1427 } | |
1428 | |
1429 address vm_lib_location[2]; // start and end address of jvm.dll | |
1430 | |
1431 // check if addr is inside jvm.dll | |
1432 bool os::address_is_in_vm(address addr) { | |
1433 if (!vm_lib_location[0] || !vm_lib_location[1]) { | |
1434 int pid = os::current_process_id(); | |
1435 if (!enumerate_modules(pid, _locate_jvm_dll, (void *)vm_lib_location)) { | |
1436 assert(false, "Can't find jvm module."); | |
1437 return false; | |
1438 } | |
1439 } | |
1440 | |
1441 return (vm_lib_location[0] <= addr) && (addr < vm_lib_location[1]); | |
1442 } | |
1443 | |
1444 // print module info; param is outputStream* | |
1445 static int _print_module(int pid, char* fname, address base, | |
1446 unsigned size, void* param) { | |
1447 if (!param) return -1; | |
1448 | |
1449 outputStream* st = (outputStream*)param; | |
1450 | |
1451 address end_addr = base + size; | |
1452 st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base, end_addr, fname); | |
1453 return 0; | |
1454 } | |
1455 | |
1456 // Loads .dll/.so and | |
1457 // in case of error it checks if .dll/.so was built for the | |
1458 // same architecture as Hotspot is running on | |
1459 void * os::dll_load(const char *name, char *ebuf, int ebuflen) | |
1460 { | |
1461 void * result = LoadLibrary(name); | |
1462 if (result != NULL) | |
1463 { | |
1464 return result; | |
1465 } | |
1466 | |
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1467 DWORD errcode = GetLastError(); |
0 | 1468 if (errcode == ERROR_MOD_NOT_FOUND) { |
1469 strncpy(ebuf, "Can't find dependent libraries", ebuflen-1); | |
1470 ebuf[ebuflen-1]='\0'; | |
1471 return NULL; | |
1472 } | |
1473 | |
1474 // Parsing dll below | |
1475 // If we can read dll-info and find that dll was built | |
1476 // for an architecture other than Hotspot is running in | |
1477 // - then print to buffer "DLL was built for a different architecture" | |
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1478 // else call os::lasterror to obtain system error message |
0 | 1479 |
1480 // Read system error message into ebuf | |
1481 // It may or may not be overwritten below (in the for loop and just above) | |
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1482 lasterror(ebuf, (size_t) ebuflen); |
0 | 1483 ebuf[ebuflen-1]='\0'; |
1484 int file_descriptor=::open(name, O_RDONLY | O_BINARY, 0); | |
1485 if (file_descriptor<0) | |
1486 { | |
1487 return NULL; | |
1488 } | |
1489 | |
1490 uint32_t signature_offset; | |
1491 uint16_t lib_arch=0; | |
1492 bool failed_to_get_lib_arch= | |
1493 ( | |
1494 //Go to position 3c in the dll | |
1495 (os::seek_to_file_offset(file_descriptor,IMAGE_FILE_PTR_TO_SIGNATURE)<0) | |
1496 || | |
1497 // Read loacation of signature | |
1498 (sizeof(signature_offset)!= | |
1499 (os::read(file_descriptor, (void*)&signature_offset,sizeof(signature_offset)))) | |
1500 || | |
1501 //Go to COFF File Header in dll | |
1502 //that is located after"signature" (4 bytes long) | |
1503 (os::seek_to_file_offset(file_descriptor, | |
1504 signature_offset+IMAGE_FILE_SIGNATURE_LENGTH)<0) | |
1505 || | |
1506 //Read field that contains code of architecture | |
1507 // that dll was build for | |
1508 (sizeof(lib_arch)!= | |
1509 (os::read(file_descriptor, (void*)&lib_arch,sizeof(lib_arch)))) | |
1510 ); | |
1511 | |
1512 ::close(file_descriptor); | |
1513 if (failed_to_get_lib_arch) | |
1514 { | |
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1515 // file i/o error - report os::lasterror(...) msg |
0 | 1516 return NULL; |
1517 } | |
1518 | |
1519 typedef struct | |
1520 { | |
1521 uint16_t arch_code; | |
1522 char* arch_name; | |
1523 } arch_t; | |
1524 | |
1525 static const arch_t arch_array[]={ | |
1526 {IMAGE_FILE_MACHINE_I386, (char*)"IA 32"}, | |
1527 {IMAGE_FILE_MACHINE_AMD64, (char*)"AMD 64"}, | |
1528 {IMAGE_FILE_MACHINE_IA64, (char*)"IA 64"} | |
1529 }; | |
1530 #if (defined _M_IA64) | |
1531 static const uint16_t running_arch=IMAGE_FILE_MACHINE_IA64; | |
1532 #elif (defined _M_AMD64) | |
1533 static const uint16_t running_arch=IMAGE_FILE_MACHINE_AMD64; | |
1534 #elif (defined _M_IX86) | |
1535 static const uint16_t running_arch=IMAGE_FILE_MACHINE_I386; | |
1536 #else | |
1537 #error Method os::dll_load requires that one of following \ | |
1538 is defined :_M_IA64,_M_AMD64 or _M_IX86 | |
1539 #endif | |
1540 | |
1541 | |
1542 // Obtain a string for printf operation | |
1543 // lib_arch_str shall contain string what platform this .dll was built for | |
1544 // running_arch_str shall string contain what platform Hotspot was built for | |
1545 char *running_arch_str=NULL,*lib_arch_str=NULL; | |
1546 for (unsigned int i=0;i<ARRAY_SIZE(arch_array);i++) | |
1547 { | |
1548 if (lib_arch==arch_array[i].arch_code) | |
1549 lib_arch_str=arch_array[i].arch_name; | |
1550 if (running_arch==arch_array[i].arch_code) | |
1551 running_arch_str=arch_array[i].arch_name; | |
1552 } | |
1553 | |
1554 assert(running_arch_str, | |
1555 "Didn't find runing architecture code in arch_array"); | |
1556 | |
1557 // If the architure is right | |
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1558 // but some other error took place - report os::lasterror(...) msg |
0 | 1559 if (lib_arch == running_arch) |
1560 { | |
1561 return NULL; | |
1562 } | |
1563 | |
1564 if (lib_arch_str!=NULL) | |
1565 { | |
1566 ::_snprintf(ebuf, ebuflen-1, | |
1567 "Can't load %s-bit .dll on a %s-bit platform", | |
1568 lib_arch_str,running_arch_str); | |
1569 } | |
1570 else | |
1571 { | |
1572 // don't know what architecture this dll was build for | |
1573 ::_snprintf(ebuf, ebuflen-1, | |
1574 "Can't load this .dll (machine code=0x%x) on a %s-bit platform", | |
1575 lib_arch,running_arch_str); | |
1576 } | |
1577 | |
1578 return NULL; | |
1579 } | |
1580 | |
1581 | |
1582 void os::print_dll_info(outputStream *st) { | |
1583 int pid = os::current_process_id(); | |
1584 st->print_cr("Dynamic libraries:"); | |
1585 enumerate_modules(pid, _print_module, (void *)st); | |
1586 } | |
1587 | |
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1588 void os::print_os_info_brief(outputStream* st) { |
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1589 os::print_os_info(st); |
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1590 } |
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1591 |
0 | 1592 void os::print_os_info(outputStream* st) { |
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1593 st->print("OS:"); |
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1594 |
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1595 os::win32::print_windows_version(st); |
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1596 } |
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1597 |
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1598 void os::win32::print_windows_version(outputStream* st) { |
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1599 OSVERSIONINFOEX osvi; |
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1600 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX)); |
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1601 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
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1602 |
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1603 if (!GetVersionEx((OSVERSIONINFO *)&osvi)) { |
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1604 st->print_cr("N/A"); |
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1605 return; |
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|
1606 } |
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|
1607 |
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1608 int os_vers = osvi.dwMajorVersion * 1000 + osvi.dwMinorVersion; |
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1609 if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) { |
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1610 switch (os_vers) { |
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1611 case 3051: st->print(" Windows NT 3.51"); break; |
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1612 case 4000: st->print(" Windows NT 4.0"); break; |
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1613 case 5000: st->print(" Windows 2000"); break; |
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1614 case 5001: st->print(" Windows XP"); break; |
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|
1615 case 5002: |
962
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|
1616 case 6000: |
6126
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7170275: os::print_os_info needs to know about Windows 8
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|
1617 case 6001: |
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|
1618 case 6002: { |
273
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1619 // Retrieve SYSTEM_INFO from GetNativeSystemInfo call so that we could |
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1620 // find out whether we are running on 64 bit processor or not. |
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1621 SYSTEM_INFO si; |
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1622 ZeroMemory(&si, sizeof(SYSTEM_INFO)); |
3833
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|
1623 if (!os::Kernel32Dll::GetNativeSystemInfoAvailable()){ |
273
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1624 GetSystemInfo(&si); |
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1625 } else { |
3833
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|
1626 os::Kernel32Dll::GetNativeSystemInfo(&si); |
273
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1627 } |
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|
1628 if (os_vers == 5002) { |
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1629 if (osvi.wProductType == VER_NT_WORKSTATION && |
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1630 si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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1631 st->print(" Windows XP x64 Edition"); |
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|
1632 else |
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|
1633 st->print(" Windows Server 2003 family"); |
962
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|
1634 } else if (os_vers == 6000) { |
273
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1635 if (osvi.wProductType == VER_NT_WORKSTATION) |
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1636 st->print(" Windows Vista"); |
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diff
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|
1637 else |
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|
1638 st->print(" Windows Server 2008"); |
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1639 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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|
1640 st->print(" , 64 bit"); |
962
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diff
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|
1641 } else if (os_vers == 6001) { |
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diff
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|
1642 if (osvi.wProductType == VER_NT_WORKSTATION) { |
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6821003: Update hotspot windows os_win32 for windows 7
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|
1643 st->print(" Windows 7"); |
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6821003: Update hotspot windows os_win32 for windows 7
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diff
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|
1644 } else { |
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diff
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|
1645 // Unrecognized windows, print out its major and minor versions |
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diff
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|
1646 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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|
1647 } |
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diff
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|
1648 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
aafa4232dfd7
6821003: Update hotspot windows os_win32 for windows 7
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|
1649 st->print(" , 64 bit"); |
6126
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7170275: os::print_os_info needs to know about Windows 8
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|
1650 } else if (os_vers == 6002) { |
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|
1651 if (osvi.wProductType == VER_NT_WORKSTATION) { |
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|
1652 st->print(" Windows 8"); |
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|
1653 } else { |
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|
1654 st->print(" Windows Server 2012"); |
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|
1655 } |
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diff
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|
1656 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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|
1657 st->print(" , 64 bit"); |
962
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6821003: Update hotspot windows os_win32 for windows 7
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diff
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|
1658 } else { // future os |
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diff
changeset
|
1659 // Unrecognized windows, print out its major and minor versions |
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diff
changeset
|
1660 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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6821003: Update hotspot windows os_win32 for windows 7
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changeset
|
1661 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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|
1662 st->print(" , 64 bit"); |
273
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|
1663 } |
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|
1664 break; |
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diff
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|
1665 } |
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|
1666 default: // future windows, print out its major and minor versions |
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|
1667 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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|
1668 } |
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|
1669 } else { |
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|
1670 switch (os_vers) { |
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|
1671 case 4000: st->print(" Windows 95"); break; |
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|
1672 case 4010: st->print(" Windows 98"); break; |
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diff
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|
1673 case 4090: st->print(" Windows Me"); break; |
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|
1674 default: // future windows, print out its major and minor versions |
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1675 st->print(" Windows %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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|
1676 } |
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|
1677 } |
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diff
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|
1678 st->print(" Build %d", osvi.dwBuildNumber); |
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|
1679 st->print(" %s", osvi.szCSDVersion); // service pack |
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|
1680 st->cr(); |
0 | 1681 } |
1682 | |
3800
bf6481e5f96d
7061225: os::print_cpu_info() should support os-specific data
jcoomes
parents:
3318
diff
changeset
|
1683 void os::pd_print_cpu_info(outputStream* st) { |
bf6481e5f96d
7061225: os::print_cpu_info() should support os-specific data
jcoomes
parents:
3318
diff
changeset
|
1684 // Nothing to do for now. |
bf6481e5f96d
7061225: os::print_cpu_info() should support os-specific data
jcoomes
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3318
diff
changeset
|
1685 } |
bf6481e5f96d
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diff
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|
1686 |
0 | 1687 void os::print_memory_info(outputStream* st) { |
1688 st->print("Memory:"); | |
1689 st->print(" %dk page", os::vm_page_size()>>10); | |
1690 | |
877
8c79517a9300
6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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parents:
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diff
changeset
|
1691 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
8c79517a9300
6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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parents:
717
diff
changeset
|
1692 // value if total memory is larger than 4GB |
8c79517a9300
6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
poonam
parents:
717
diff
changeset
|
1693 MEMORYSTATUSEX ms; |
8c79517a9300
6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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parents:
717
diff
changeset
|
1694 ms.dwLength = sizeof(ms); |
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6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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parents:
717
diff
changeset
|
1695 GlobalMemoryStatusEx(&ms); |
0 | 1696 |
1697 st->print(", physical %uk", os::physical_memory() >> 10); | |
1698 st->print("(%uk free)", os::available_memory() >> 10); | |
1699 | |
877
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diff
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|
1700 st->print(", swap %uk", ms.ullTotalPageFile >> 10); |
8c79517a9300
6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
poonam
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diff
changeset
|
1701 st->print("(%uk free)", ms.ullAvailPageFile >> 10); |
0 | 1702 st->cr(); |
1703 } | |
1704 | |
1705 void os::print_siginfo(outputStream *st, void *siginfo) { | |
1706 EXCEPTION_RECORD* er = (EXCEPTION_RECORD*)siginfo; | |
1707 st->print("siginfo:"); | |
1708 st->print(" ExceptionCode=0x%x", er->ExceptionCode); | |
1709 | |
1710 if (er->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
1711 er->NumberParameters >= 2) { | |
1712 switch (er->ExceptionInformation[0]) { | |
1713 case 0: st->print(", reading address"); break; | |
1714 case 1: st->print(", writing address"); break; | |
1715 default: st->print(", ExceptionInformation=" INTPTR_FORMAT, | |
1716 er->ExceptionInformation[0]); | |
1717 } | |
1718 st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]); | |
1719 } else if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR && | |
1720 er->NumberParameters >= 2 && UseSharedSpaces) { | |
1721 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
1722 if (mapinfo->is_in_shared_space((void*)er->ExceptionInformation[1])) { | |
1723 st->print("\n\nError accessing class data sharing archive." \ | |
1724 " Mapped file inaccessible during execution, " \ | |
1725 " possible disk/network problem."); | |
1726 } | |
1727 } else { | |
1728 int num = er->NumberParameters; | |
1729 if (num > 0) { | |
1730 st->print(", ExceptionInformation="); | |
1731 for (int i = 0; i < num; i++) { | |
1732 st->print(INTPTR_FORMAT " ", er->ExceptionInformation[i]); | |
1733 } | |
1734 } | |
1735 } | |
1736 st->cr(); | |
1737 } | |
1738 | |
1739 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
1740 // do nothing | |
1741 } | |
1742 | |
1743 static char saved_jvm_path[MAX_PATH] = {0}; | |
1744 | |
7456
7d42f3b08300
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|
1745 // Find the full path to the current module, jvm.dll |
0 | 1746 void os::jvm_path(char *buf, jint buflen) { |
1747 // Error checking. | |
1748 if (buflen < MAX_PATH) { | |
1749 assert(false, "must use a large-enough buffer"); | |
1750 buf[0] = '\0'; | |
1751 return; | |
1752 } | |
1753 // Lazy resolve the path to current module. | |
1754 if (saved_jvm_path[0] != 0) { | |
1755 strcpy(buf, saved_jvm_path); | |
1756 return; | |
1757 } | |
1758 | |
1985 | 1759 buf[0] = '\0'; |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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diff
changeset
|
1760 if (Arguments::created_by_gamma_launcher()) { |
1985 | 1761 // Support for the gamma launcher. Check for an |
2027
aa6e219afbf1
7006354: Updates to Visual Studio project creation and development launcher
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parents:
2023
diff
changeset
|
1762 // JAVA_HOME environment variable |
1985 | 1763 // and fix up the path so it looks like |
1764 // libjvm.so is installed there (append a fake suffix | |
1765 // hotspot/libjvm.so). | |
2027
aa6e219afbf1
7006354: Updates to Visual Studio project creation and development launcher
sla
parents:
2023
diff
changeset
|
1766 char* java_home_var = ::getenv("JAVA_HOME"); |
1985 | 1767 if (java_home_var != NULL && java_home_var[0] != 0) { |
1768 | |
1769 strncpy(buf, java_home_var, buflen); | |
1770 | |
1771 // determine if this is a legacy image or modules image | |
1772 // modules image doesn't have "jre" subdirectory | |
1773 size_t len = strlen(buf); | |
1774 char* jrebin_p = buf + len; | |
1775 jio_snprintf(jrebin_p, buflen-len, "\\jre\\bin\\"); | |
1776 if (0 != _access(buf, 0)) { | |
1777 jio_snprintf(jrebin_p, buflen-len, "\\bin\\"); | |
1778 } | |
1779 len = strlen(buf); | |
1780 jio_snprintf(buf + len, buflen-len, "hotspot\\jvm.dll"); | |
1781 } | |
1782 } | |
1783 | |
1784 if(buf[0] == '\0') { | |
0 | 1785 GetModuleFileName(vm_lib_handle, buf, buflen); |
1985 | 1786 } |
0 | 1787 strcpy(saved_jvm_path, buf); |
1788 } | |
1789 | |
1790 | |
1791 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
1792 #ifndef _WIN64 | |
1793 st->print("_"); | |
1794 #endif | |
1795 } | |
1796 | |
1797 | |
1798 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
1799 #ifndef _WIN64 | |
1800 st->print("@%d", args_size * sizeof(int)); | |
1801 #endif | |
1802 } | |
1803 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
1804 // This method is a copy of JDK's sysGetLastErrorString |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
1805 // from src/windows/hpi/src/system_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
1806 |
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1807 size_t os::lasterror(char* buf, size_t len) { |
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1808 DWORD errval; |
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1809 |
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1810 if ((errval = GetLastError()) != 0) { |
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1811 // DOS error |
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1812 size_t n = (size_t)FormatMessage( |
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1813 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, |
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1814 NULL, |
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1815 errval, |
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1816 0, |
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1817 buf, |
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1818 (DWORD)len, |
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1819 NULL); |
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1820 if (n > 3) { |
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1821 // Drop final '.', CR, LF |
1980
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1822 if (buf[n - 1] == '\n') n--; |
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1823 if (buf[n - 1] == '\r') n--; |
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1824 if (buf[n - 1] == '.') n--; |
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1825 buf[n] = '\0'; |
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1826 } |
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1827 return n; |
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1828 } |
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1829 |
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1830 if (errno != 0) { |
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1831 // C runtime error that has no corresponding DOS error code |
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1832 const char* s = strerror(errno); |
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1833 size_t n = strlen(s); |
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1834 if (n >= len) n = len - 1; |
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1835 strncpy(buf, s, n); |
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1836 buf[n] = '\0'; |
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1837 return n; |
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1838 } |
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1839 |
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1840 return 0; |
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1841 } |
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1842 |
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1843 int os::get_last_error() { |
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1844 DWORD error = GetLastError(); |
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1845 if (error == 0) |
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1846 error = errno; |
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1847 return (int)error; |
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1848 } |
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1849 |
0 | 1850 // sun.misc.Signal |
1851 // NOTE that this is a workaround for an apparent kernel bug where if | |
1852 // a signal handler for SIGBREAK is installed then that signal handler | |
1853 // takes priority over the console control handler for CTRL_CLOSE_EVENT. | |
1854 // See bug 4416763. | |
1855 static void (*sigbreakHandler)(int) = NULL; | |
1856 | |
1857 static void UserHandler(int sig, void *siginfo, void *context) { | |
1858 os::signal_notify(sig); | |
1859 // We need to reinstate the signal handler each time... | |
1860 os::signal(sig, (void*)UserHandler); | |
1861 } | |
1862 | |
1863 void* os::user_handler() { | |
1864 return (void*) UserHandler; | |
1865 } | |
1866 | |
1867 void* os::signal(int signal_number, void* handler) { | |
1868 if ((signal_number == SIGBREAK) && (!ReduceSignalUsage)) { | |
1869 void (*oldHandler)(int) = sigbreakHandler; | |
1870 sigbreakHandler = (void (*)(int)) handler; | |
1871 return (void*) oldHandler; | |
1872 } else { | |
1873 return (void*)::signal(signal_number, (void (*)(int))handler); | |
1874 } | |
1875 } | |
1876 | |
1877 void os::signal_raise(int signal_number) { | |
1878 raise(signal_number); | |
1879 } | |
1880 | |
1881 // The Win32 C runtime library maps all console control events other than ^C | |
1882 // into SIGBREAK, which makes it impossible to distinguish ^BREAK from close, | |
1883 // logoff, and shutdown events. We therefore install our own console handler | |
1884 // that raises SIGTERM for the latter cases. | |
1885 // | |
1886 static BOOL WINAPI consoleHandler(DWORD event) { | |
1887 switch(event) { | |
1888 case CTRL_C_EVENT: | |
1889 if (is_error_reported()) { | |
1890 // Ctrl-C is pressed during error reporting, likely because the error | |
1891 // handler fails to abort. Let VM die immediately. | |
1892 os::die(); | |
1893 } | |
1894 | |
1895 os::signal_raise(SIGINT); | |
1896 return TRUE; | |
1897 break; | |
1898 case CTRL_BREAK_EVENT: | |
1899 if (sigbreakHandler != NULL) { | |
1900 (*sigbreakHandler)(SIGBREAK); | |
1901 } | |
1902 return TRUE; | |
1903 break; | |
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1904 case CTRL_LOGOFF_EVENT: { |
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1905 // Don't terminate JVM if it is running in a non-interactive session, |
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1906 // such as a service process. |
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1907 USEROBJECTFLAGS flags; |
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1908 HANDLE handle = GetProcessWindowStation(); |
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1909 if (handle != NULL && |
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1910 GetUserObjectInformation(handle, UOI_FLAGS, &flags, |
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1911 sizeof( USEROBJECTFLAGS), NULL)) { |
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1912 // If it is a non-interactive session, let next handler to deal |
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1913 // with it. |
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1914 if ((flags.dwFlags & WSF_VISIBLE) == 0) { |
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1915 return FALSE; |
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1916 } |
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1917 } |
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1918 } |
0 | 1919 case CTRL_CLOSE_EVENT: |
1920 case CTRL_SHUTDOWN_EVENT: | |
1921 os::signal_raise(SIGTERM); | |
1922 return TRUE; | |
1923 break; | |
1924 default: | |
1925 break; | |
1926 } | |
1927 return FALSE; | |
1928 } | |
1929 | |
1930 /* | |
1931 * The following code is moved from os.cpp for making this | |
1932 * code platform specific, which it is by its very nature. | |
1933 */ | |
1934 | |
1935 // Return maximum OS signal used + 1 for internal use only | |
1936 // Used as exit signal for signal_thread | |
1937 int os::sigexitnum_pd(){ | |
1938 return NSIG; | |
1939 } | |
1940 | |
1941 // a counter for each possible signal value, including signal_thread exit signal | |
1942 static volatile jint pending_signals[NSIG+1] = { 0 }; | |
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1943 static HANDLE sig_sem = NULL; |
0 | 1944 |
1945 void os::signal_init_pd() { | |
1946 // Initialize signal structures | |
1947 memset((void*)pending_signals, 0, sizeof(pending_signals)); | |
1948 | |
1949 sig_sem = ::CreateSemaphore(NULL, 0, NSIG+1, NULL); | |
1950 | |
1951 // Programs embedding the VM do not want it to attempt to receive | |
1952 // events like CTRL_LOGOFF_EVENT, which are used to implement the | |
1953 // shutdown hooks mechanism introduced in 1.3. For example, when | |
1954 // the VM is run as part of a Windows NT service (i.e., a servlet | |
1955 // engine in a web server), the correct behavior is for any console | |
1956 // control handler to return FALSE, not TRUE, because the OS's | |
1957 // "final" handler for such events allows the process to continue if | |
1958 // it is a service (while terminating it if it is not a service). | |
1959 // To make this behavior uniform and the mechanism simpler, we | |
1960 // completely disable the VM's usage of these console events if -Xrs | |
1961 // (=ReduceSignalUsage) is specified. This means, for example, that | |
1962 // the CTRL-BREAK thread dump mechanism is also disabled in this | |
1963 // case. See bugs 4323062, 4345157, and related bugs. | |
1964 | |
1965 if (!ReduceSignalUsage) { | |
1966 // Add a CTRL-C handler | |
1967 SetConsoleCtrlHandler(consoleHandler, TRUE); | |
1968 } | |
1969 } | |
1970 | |
1971 void os::signal_notify(int signal_number) { | |
1972 BOOL ret; | |
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1973 if (sig_sem != NULL) { |
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1974 Atomic::inc(&pending_signals[signal_number]); |
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1975 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); |
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1976 assert(ret != 0, "ReleaseSemaphore() failed"); |
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1977 } |
0 | 1978 } |
1979 | |
1980 static int check_pending_signals(bool wait_for_signal) { | |
1981 DWORD ret; | |
1982 while (true) { | |
1983 for (int i = 0; i < NSIG + 1; i++) { | |
1984 jint n = pending_signals[i]; | |
1985 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
1986 return i; | |
1987 } | |
1988 } | |
1989 if (!wait_for_signal) { | |
1990 return -1; | |
1991 } | |
1992 | |
1993 JavaThread *thread = JavaThread::current(); | |
1994 | |
1995 ThreadBlockInVM tbivm(thread); | |
1996 | |
1997 bool threadIsSuspended; | |
1998 do { | |
1999 thread->set_suspend_equivalent(); | |
2000 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
2001 ret = ::WaitForSingleObject(sig_sem, INFINITE); | |
2002 assert(ret == WAIT_OBJECT_0, "WaitForSingleObject() failed"); | |
2003 | |
2004 // were we externally suspended while we were waiting? | |
2005 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
2006 if (threadIsSuspended) { | |
2007 // | |
2008 // The semaphore has been incremented, but while we were waiting | |
2009 // another thread suspended us. We don't want to continue running | |
2010 // while suspended because that would surprise the thread that | |
2011 // suspended us. | |
2012 // | |
2013 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); | |
2014 assert(ret != 0, "ReleaseSemaphore() failed"); | |
2015 | |
2016 thread->java_suspend_self(); | |
2017 } | |
2018 } while (threadIsSuspended); | |
2019 } | |
2020 } | |
2021 | |
2022 int os::signal_lookup() { | |
2023 return check_pending_signals(false); | |
2024 } | |
2025 | |
2026 int os::signal_wait() { | |
2027 return check_pending_signals(true); | |
2028 } | |
2029 | |
2030 // Implicit OS exception handling | |
2031 | |
2032 LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo, address handler) { | |
2033 JavaThread* thread = JavaThread::current(); | |
2034 // Save pc in thread | |
2035 #ifdef _M_IA64 | |
7994 | 2036 // Do not blow up if no thread info available. |
2037 if (thread) { | |
2038 // Saving PRECISE pc (with slot information) in thread. | |
2039 uint64_t precise_pc = (uint64_t) exceptionInfo->ExceptionRecord->ExceptionAddress; | |
2040 // Convert precise PC into "Unix" format | |
2041 precise_pc = (precise_pc & 0xFFFFFFFFFFFFFFF0) | ((precise_pc & 0xF) >> 2); | |
2042 thread->set_saved_exception_pc((address)precise_pc); | |
2043 } | |
0 | 2044 // Set pc to handler |
2045 exceptionInfo->ContextRecord->StIIP = (DWORD64)handler; | |
7994 | 2046 // Clear out psr.ri (= Restart Instruction) in order to continue |
2047 // at the beginning of the target bundle. | |
2048 exceptionInfo->ContextRecord->StIPSR &= 0xFFFFF9FFFFFFFFFF; | |
2049 assert(((DWORD64)handler & 0xF) == 0, "Target address must point to the beginning of a bundle!"); | |
0 | 2050 #elif _M_AMD64 |
7994 | 2051 // Do not blow up if no thread info available. |
2052 if (thread) { | |
2053 thread->set_saved_exception_pc((address)(DWORD_PTR)exceptionInfo->ContextRecord->Rip); | |
2054 } | |
0 | 2055 // Set pc to handler |
2056 exceptionInfo->ContextRecord->Rip = (DWORD64)handler; | |
2057 #else | |
7994 | 2058 // Do not blow up if no thread info available. |
2059 if (thread) { | |
2060 thread->set_saved_exception_pc((address)(DWORD_PTR)exceptionInfo->ContextRecord->Eip); | |
2061 } | |
0 | 2062 // Set pc to handler |
7994 | 2063 exceptionInfo->ContextRecord->Eip = (DWORD)(DWORD_PTR)handler; |
0 | 2064 #endif |
2065 | |
2066 // Continue the execution | |
2067 return EXCEPTION_CONTINUE_EXECUTION; | |
2068 } | |
2069 | |
2070 | |
2071 // Used for PostMortemDump | |
2072 extern "C" void safepoints(); | |
2073 extern "C" void find(int x); | |
2074 extern "C" void events(); | |
2075 | |
2076 // According to Windows API documentation, an illegal instruction sequence should generate | |
2077 // the 0xC000001C exception code. However, real world experience shows that occasionnaly | |
2078 // the execution of an illegal instruction can generate the exception code 0xC000001E. This | |
2079 // seems to be an undocumented feature of Win NT 4.0 (and probably other Windows systems). | |
2080 | |
2081 #define EXCEPTION_ILLEGAL_INSTRUCTION_2 0xC000001E | |
2082 | |
2083 // From "Execution Protection in the Windows Operating System" draft 0.35 | |
2084 // Once a system header becomes available, the "real" define should be | |
2085 // included or copied here. | |
2086 #define EXCEPTION_INFO_EXEC_VIOLATION 0x08 | |
2087 | |
7994 | 2088 // Handle NAT Bit consumption on IA64. |
2089 #ifdef _M_IA64 | |
2090 #define EXCEPTION_REG_NAT_CONSUMPTION STATUS_REG_NAT_CONSUMPTION | |
2091 #endif | |
2092 | |
2093 // Windows Vista/2008 heap corruption check | |
2094 #define EXCEPTION_HEAP_CORRUPTION 0xC0000374 | |
2095 | |
0 | 2096 #define def_excpt(val) #val, val |
2097 | |
2098 struct siglabel { | |
2099 char *name; | |
2100 int number; | |
2101 }; | |
2102 | |
2068
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2103 // All Visual C++ exceptions thrown from code generated by the Microsoft Visual |
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2104 // C++ compiler contain this error code. Because this is a compiler-generated |
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2105 // error, the code is not listed in the Win32 API header files. |
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2106 // The code is actually a cryptic mnemonic device, with the initial "E" |
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2107 // standing for "exception" and the final 3 bytes (0x6D7363) representing the |
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2108 // ASCII values of "msc". |
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2109 |
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2110 #define EXCEPTION_UNCAUGHT_CXX_EXCEPTION 0xE06D7363 |
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2111 |
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2112 |
0 | 2113 struct siglabel exceptlabels[] = { |
2114 def_excpt(EXCEPTION_ACCESS_VIOLATION), | |
2115 def_excpt(EXCEPTION_DATATYPE_MISALIGNMENT), | |
2116 def_excpt(EXCEPTION_BREAKPOINT), | |
2117 def_excpt(EXCEPTION_SINGLE_STEP), | |
2118 def_excpt(EXCEPTION_ARRAY_BOUNDS_EXCEEDED), | |
2119 def_excpt(EXCEPTION_FLT_DENORMAL_OPERAND), | |
2120 def_excpt(EXCEPTION_FLT_DIVIDE_BY_ZERO), | |
2121 def_excpt(EXCEPTION_FLT_INEXACT_RESULT), | |
2122 def_excpt(EXCEPTION_FLT_INVALID_OPERATION), | |
2123 def_excpt(EXCEPTION_FLT_OVERFLOW), | |
2124 def_excpt(EXCEPTION_FLT_STACK_CHECK), | |
2125 def_excpt(EXCEPTION_FLT_UNDERFLOW), | |
2126 def_excpt(EXCEPTION_INT_DIVIDE_BY_ZERO), | |
2127 def_excpt(EXCEPTION_INT_OVERFLOW), | |
2128 def_excpt(EXCEPTION_PRIV_INSTRUCTION), | |
2129 def_excpt(EXCEPTION_IN_PAGE_ERROR), | |
2130 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION), | |
2131 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION_2), | |
2132 def_excpt(EXCEPTION_NONCONTINUABLE_EXCEPTION), | |
2133 def_excpt(EXCEPTION_STACK_OVERFLOW), | |
2134 def_excpt(EXCEPTION_INVALID_DISPOSITION), | |
2135 def_excpt(EXCEPTION_GUARD_PAGE), | |
2136 def_excpt(EXCEPTION_INVALID_HANDLE), | |
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2137 def_excpt(EXCEPTION_UNCAUGHT_CXX_EXCEPTION), |
7994 | 2138 def_excpt(EXCEPTION_HEAP_CORRUPTION), |
2139 #ifdef _M_IA64 | |
2140 def_excpt(EXCEPTION_REG_NAT_CONSUMPTION), | |
2141 #endif | |
0 | 2142 NULL, 0 |
2143 }; | |
2144 | |
2145 const char* os::exception_name(int exception_code, char *buf, size_t size) { | |
2146 for (int i = 0; exceptlabels[i].name != NULL; i++) { | |
2147 if (exceptlabels[i].number == exception_code) { | |
2148 jio_snprintf(buf, size, "%s", exceptlabels[i].name); | |
2149 return buf; | |
2150 } | |
2151 } | |
2152 | |
2153 return NULL; | |
2154 } | |
2155 | |
2156 //----------------------------------------------------------------------------- | |
2157 LONG Handle_IDiv_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2158 // handle exception caused by idiv; should only happen for -MinInt/-1 | |
2159 // (division by zero is handled explicitly) | |
2160 #ifdef _M_IA64 | |
2161 assert(0, "Fix Handle_IDiv_Exception"); | |
2162 #elif _M_AMD64 | |
7696
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2163 #ifdef GRAAL |
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2164 PCONTEXT ctx = exceptionInfo->ContextRecord; |
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2165 address pc = (address)ctx->Rip; |
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2166 assert(pc[0] == 0x48 && pc[1] == 0xF7 || pc[0] == 0xF7, "not an idiv opcode"); |
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2167 if (pc[0] == 0x48) { |
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2168 // set correct result values and continue after idiv instruction |
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2169 ctx->Rip = (DWORD64)pc + 3; // REX idiv reg, reg is 3 bytes |
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2170 ctx->Rax = (DWORD64)min_jlong; // result |
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2171 } else { |
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2172 ctx->Rip = (DWORD64)pc + 2; // idiv reg, reg is 2 bytes |
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2173 ctx->Rax = (DWORD64)min_jint; // result |
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2174 } |
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2175 ctx->Rdx = (DWORD64)0; // remainder |
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2176 // Continue the execution |
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2177 #else |
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2178 PCONTEXT ctx = exceptionInfo->ContextRecord; |
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2179 address pc = (address)ctx->Rip; |
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2180 assert(pc[0] == 0xF7, "not an idiv opcode"); |
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2181 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); |
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2182 assert(ctx->Rax == min_jint, "unexpected idiv exception"); |
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2183 // set correct result values and continue after idiv instruction |
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2184 ctx->Rip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes |
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2185 ctx->Rax = (DWORD)min_jint; // result |
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2186 ctx->Rdx = (DWORD)0; // remainder |
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2187 // Continue the execution |
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2188 #endif // GRAAL |
0 | 2189 #else |
2190 PCONTEXT ctx = exceptionInfo->ContextRecord; | |
2191 address pc = (address)ctx->Eip; | |
2192 assert(pc[0] == 0xF7, "not an idiv opcode"); | |
2193 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); | |
2194 assert(ctx->Eax == min_jint, "unexpected idiv exception"); | |
2195 // set correct result values and continue after idiv instruction | |
2196 ctx->Eip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes | |
2197 ctx->Eax = (DWORD)min_jint; // result | |
2198 ctx->Edx = (DWORD)0; // remainder | |
2199 // Continue the execution | |
2200 #endif | |
2201 return EXCEPTION_CONTINUE_EXECUTION; | |
2202 } | |
2203 | |
2204 #ifndef _WIN64 | |
2205 //----------------------------------------------------------------------------- | |
2206 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
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2207 // handle exception caused by native method modifying control word |
0 | 2208 PCONTEXT ctx = exceptionInfo->ContextRecord; |
2209 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2210 | |
2211 switch (exception_code) { | |
2212 case EXCEPTION_FLT_DENORMAL_OPERAND: | |
2213 case EXCEPTION_FLT_DIVIDE_BY_ZERO: | |
2214 case EXCEPTION_FLT_INEXACT_RESULT: | |
2215 case EXCEPTION_FLT_INVALID_OPERATION: | |
2216 case EXCEPTION_FLT_OVERFLOW: | |
2217 case EXCEPTION_FLT_STACK_CHECK: | |
2218 case EXCEPTION_FLT_UNDERFLOW: | |
2219 jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std()); | |
2220 if (fp_control_word != ctx->FloatSave.ControlWord) { | |
2221 // Restore FPCW and mask out FLT exceptions | |
2222 ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0; | |
2223 // Mask out pending FLT exceptions | |
2224 ctx->FloatSave.StatusWord &= 0xffffff00; | |
2225 return EXCEPTION_CONTINUE_EXECUTION; | |
2226 } | |
2227 } | |
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2228 |
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2229 if (prev_uef_handler != NULL) { |
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2230 // We didn't handle this exception so pass it to the previous |
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2231 // UnhandledExceptionFilter. |
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2232 return (prev_uef_handler)(exceptionInfo); |
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2233 } |
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2234 |
0 | 2235 return EXCEPTION_CONTINUE_SEARCH; |
2236 } | |
2237 #else //_WIN64 | |
2238 /* | |
2239 On Windows, the mxcsr control bits are non-volatile across calls | |
2240 See also CR 6192333 | |
2241 If EXCEPTION_FLT_* happened after some native method modified | |
2242 mxcsr - it is not a jvm fault. | |
2243 However should we decide to restore of mxcsr after a faulty | |
2244 native method we can uncomment following code | |
2245 jint MxCsr = INITIAL_MXCSR; | |
2246 // we can't use StubRoutines::addr_mxcsr_std() | |
2247 // because in Win64 mxcsr is not saved there | |
2248 if (MxCsr != ctx->MxCsr) { | |
2249 ctx->MxCsr = MxCsr; | |
2250 return EXCEPTION_CONTINUE_EXECUTION; | |
2251 } | |
2252 | |
2253 */ | |
2254 #endif //_WIN64 | |
2255 | |
2256 | |
2257 // Fatal error reporting is single threaded so we can make this a | |
2258 // static and preallocated. If it's more than MAX_PATH silently ignore | |
2259 // it. | |
2260 static char saved_error_file[MAX_PATH] = {0}; | |
2261 | |
2262 void os::set_error_file(const char *logfile) { | |
2263 if (strlen(logfile) <= MAX_PATH) { | |
2264 strncpy(saved_error_file, logfile, MAX_PATH); | |
2265 } | |
2266 } | |
2267 | |
2268 static inline void report_error(Thread* t, DWORD exception_code, | |
2269 address addr, void* siginfo, void* context) { | |
2270 VMError err(t, exception_code, addr, siginfo, context); | |
2271 err.report_and_die(); | |
2272 | |
2273 // If UseOsErrorReporting, this will return here and save the error file | |
2274 // somewhere where we can find it in the minidump. | |
2275 } | |
2276 | |
2277 //----------------------------------------------------------------------------- | |
2278 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2279 if (InterceptOSException) return EXCEPTION_CONTINUE_SEARCH; | |
2280 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2281 #ifdef _M_IA64 | |
7994 | 2282 // On Itanium, we need the "precise pc", which has the slot number coded |
2283 // into the least 4 bits: 0000=slot0, 0100=slot1, 1000=slot2 (Windows format). | |
2284 address pc = (address) exceptionInfo->ExceptionRecord->ExceptionAddress; | |
2285 // Convert the pc to "Unix format", which has the slot number coded | |
2286 // into the least 2 bits: 0000=slot0, 0001=slot1, 0010=slot2 | |
2287 // This is needed for IA64 because "relocation" / "implicit null check" / "poll instruction" | |
2288 // information is saved in the Unix format. | |
2289 address pc_unix_format = (address) ((((uint64_t)pc) & 0xFFFFFFFFFFFFFFF0) | ((((uint64_t)pc) & 0xF) >> 2)); | |
0 | 2290 #elif _M_AMD64 |
2291 address pc = (address) exceptionInfo->ContextRecord->Rip; | |
2292 #else | |
2293 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
2294 #endif | |
2295 Thread* t = ThreadLocalStorage::get_thread_slow(); // slow & steady | |
2296 | |
2297 #ifndef _WIN64 | |
2298 // Execution protection violation - win32 running on AMD64 only | |
2299 // Handled first to avoid misdiagnosis as a "normal" access violation; | |
2300 // This is safe to do because we have a new/unique ExceptionInformation | |
2301 // code for this condition. | |
2302 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2303 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2304 int exception_subcode = (int) exceptionRecord->ExceptionInformation[0]; | |
2305 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2306 | |
2307 if (exception_subcode == EXCEPTION_INFO_EXEC_VIOLATION) { | |
2308 int page_size = os::vm_page_size(); | |
2309 | |
2310 // Make sure the pc and the faulting address are sane. | |
2311 // | |
2312 // If an instruction spans a page boundary, and the page containing | |
2313 // the beginning of the instruction is executable but the following | |
2314 // page is not, the pc and the faulting address might be slightly | |
2315 // different - we still want to unguard the 2nd page in this case. | |
2316 // | |
2317 // 15 bytes seems to be a (very) safe value for max instruction size. | |
2318 bool pc_is_near_addr = | |
2319 (pointer_delta((void*) addr, (void*) pc, sizeof(char)) < 15); | |
2320 bool instr_spans_page_boundary = | |
2321 (align_size_down((intptr_t) pc ^ (intptr_t) addr, | |
2322 (intptr_t) page_size) > 0); | |
2323 | |
2324 if (pc == addr || (pc_is_near_addr && instr_spans_page_boundary)) { | |
2325 static volatile address last_addr = | |
2326 (address) os::non_memory_address_word(); | |
2327 | |
2328 // In conservative mode, don't unguard unless the address is in the VM | |
2329 if (UnguardOnExecutionViolation > 0 && addr != last_addr && | |
2330 (UnguardOnExecutionViolation > 1 || os::address_is_in_vm(addr))) { | |
2331 | |
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2332 // Set memory to RWX and retry |
0 | 2333 address page_start = |
2334 (address) align_size_down((intptr_t) addr, (intptr_t) page_size); | |
477
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2335 bool res = os::protect_memory((char*) page_start, page_size, |
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2336 os::MEM_PROT_RWX); |
0 | 2337 |
2338 if (PrintMiscellaneous && Verbose) { | |
2339 char buf[256]; | |
2340 jio_snprintf(buf, sizeof(buf), "Execution protection violation " | |
2341 "at " INTPTR_FORMAT | |
2342 ", unguarding " INTPTR_FORMAT ": %s", addr, | |
2343 page_start, (res ? "success" : strerror(errno))); | |
2344 tty->print_raw_cr(buf); | |
2345 } | |
2346 | |
2347 // Set last_addr so if we fault again at the same address, we don't | |
2348 // end up in an endless loop. | |
2349 // | |
2350 // There are two potential complications here. Two threads trapping | |
2351 // at the same address at the same time could cause one of the | |
2352 // threads to think it already unguarded, and abort the VM. Likely | |
2353 // very rare. | |
2354 // | |
2355 // The other race involves two threads alternately trapping at | |
2356 // different addresses and failing to unguard the page, resulting in | |
2357 // an endless loop. This condition is probably even more unlikely | |
2358 // than the first. | |
2359 // | |
2360 // Although both cases could be avoided by using locks or thread | |
2361 // local last_addr, these solutions are unnecessary complication: | |
2362 // this handler is a best-effort safety net, not a complete solution. | |
2363 // It is disabled by default and should only be used as a workaround | |
2364 // in case we missed any no-execute-unsafe VM code. | |
2365 | |
2366 last_addr = addr; | |
2367 | |
2368 return EXCEPTION_CONTINUE_EXECUTION; | |
2369 } | |
2370 } | |
2371 | |
2372 // Last unguard failed or not unguarding | |
2373 tty->print_raw_cr("Execution protection violation"); | |
2374 report_error(t, exception_code, addr, exceptionInfo->ExceptionRecord, | |
2375 exceptionInfo->ContextRecord); | |
2376 return EXCEPTION_CONTINUE_SEARCH; | |
2377 } | |
2378 } | |
2379 #endif // _WIN64 | |
2380 | |
2381 // Check to see if we caught the safepoint code in the | |
2382 // process of write protecting the memory serialization page. | |
2383 // It write enables the page immediately after protecting it | |
2384 // so just return. | |
2385 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
2386 JavaThread* thread = (JavaThread*) t; | |
2387 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2388 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2389 if ( os::is_memory_serialize_page(thread, addr) ) { | |
2390 // Block current thread until the memory serialize page permission restored. | |
2391 os::block_on_serialize_page_trap(); | |
2392 return EXCEPTION_CONTINUE_EXECUTION; | |
2393 } | |
2394 } | |
2395 | |
2396 if (t != NULL && t->is_Java_thread()) { | |
2397 JavaThread* thread = (JavaThread*) t; | |
2398 bool in_java = thread->thread_state() == _thread_in_Java; | |
2399 | |
2400 // Handle potential stack overflows up front. | |
2401 if (exception_code == EXCEPTION_STACK_OVERFLOW) { | |
2402 if (os::uses_stack_guard_pages()) { | |
2403 #ifdef _M_IA64 | |
7994 | 2404 // Use guard page for register stack. |
0 | 2405 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; |
2406 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
7994 | 2407 // Check for a register stack overflow on Itanium |
2408 if (thread->addr_inside_register_stack_red_zone(addr)) { | |
2409 // Fatal red zone violation happens if the Java program | |
2410 // catches a StackOverflow error and does so much processing | |
2411 // that it runs beyond the unprotected yellow guard zone. As | |
2412 // a result, we are out of here. | |
2413 fatal("ERROR: Unrecoverable stack overflow happened. JVM will exit."); | |
2414 } else if(thread->addr_inside_register_stack(addr)) { | |
2415 // Disable the yellow zone which sets the state that | |
2416 // we've got a stack overflow problem. | |
2417 if (thread->stack_yellow_zone_enabled()) { | |
2418 thread->disable_stack_yellow_zone(); | |
2419 } | |
2420 // Give us some room to process the exception. | |
2421 thread->disable_register_stack_guard(); | |
2422 // Tracing with +Verbose. | |
2423 if (Verbose) { | |
2424 tty->print_cr("SOF Compiled Register Stack overflow at " INTPTR_FORMAT " (SIGSEGV)", pc); | |
2425 tty->print_cr("Register Stack access at " INTPTR_FORMAT, addr); | |
2426 tty->print_cr("Register Stack base " INTPTR_FORMAT, thread->register_stack_base()); | |
2427 tty->print_cr("Register Stack [" INTPTR_FORMAT "," INTPTR_FORMAT "]", | |
2428 thread->register_stack_base(), | |
2429 thread->register_stack_base() + thread->stack_size()); | |
2430 } | |
2431 | |
2432 // Reguard the permanent register stack red zone just to be sure. | |
2433 // We saw Windows silently disabling this without telling us. | |
2434 thread->enable_register_stack_red_zone(); | |
2435 | |
2436 return Handle_Exception(exceptionInfo, | |
2437 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
0 | 2438 } |
2439 #endif | |
2440 if (thread->stack_yellow_zone_enabled()) { | |
2441 // Yellow zone violation. The o/s has unprotected the first yellow | |
2442 // zone page for us. Note: must call disable_stack_yellow_zone to | |
2443 // update the enabled status, even if the zone contains only one page. | |
2444 thread->disable_stack_yellow_zone(); | |
2445 // If not in java code, return and hope for the best. | |
2446 return in_java ? Handle_Exception(exceptionInfo, | |
2447 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) | |
2448 : EXCEPTION_CONTINUE_EXECUTION; | |
2449 } else { | |
2450 // Fatal red zone violation. | |
2451 thread->disable_stack_red_zone(); | |
2452 tty->print_raw_cr("An unrecoverable stack overflow has occurred."); | |
2453 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2454 exceptionInfo->ContextRecord); | |
2455 return EXCEPTION_CONTINUE_SEARCH; | |
2456 } | |
2457 } else if (in_java) { | |
2458 // JVM-managed guard pages cannot be used on win95/98. The o/s provides | |
2459 // a one-time-only guard page, which it has released to us. The next | |
2460 // stack overflow on this thread will result in an ACCESS_VIOLATION. | |
2461 return Handle_Exception(exceptionInfo, | |
2462 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2463 } else { | |
2464 // Can only return and hope for the best. Further stack growth will | |
2465 // result in an ACCESS_VIOLATION. | |
2466 return EXCEPTION_CONTINUE_EXECUTION; | |
2467 } | |
2468 } else if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2469 // Either stack overflow or null pointer exception. | |
2470 if (in_java) { | |
2471 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2472 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2473 address stack_end = thread->stack_base() - thread->stack_size(); | |
2474 if (addr < stack_end && addr >= stack_end - os::vm_page_size()) { | |
2475 // Stack overflow. | |
2476 assert(!os::uses_stack_guard_pages(), | |
2477 "should be caught by red zone code above."); | |
2478 return Handle_Exception(exceptionInfo, | |
2479 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2480 } | |
2481 // | |
2482 // Check for safepoint polling and implicit null | |
2483 // We only expect null pointers in the stubs (vtable) | |
2484 // the rest are checked explicitly now. | |
2485 // | |
2486 CodeBlob* cb = CodeCache::find_blob(pc); | |
2487 if (cb != NULL) { | |
2488 if (os::is_poll_address(addr)) { | |
2489 address stub = SharedRuntime::get_poll_stub(pc); | |
2490 return Handle_Exception(exceptionInfo, stub); | |
2491 } | |
2492 } | |
2493 { | |
2494 #ifdef _WIN64 | |
2495 // | |
2496 // If it's a legal stack address map the entire region in | |
2497 // | |
2498 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2499 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2500 if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) { | |
2501 addr = (address)((uintptr_t)addr & | |
2502 (~((uintptr_t)os::vm_page_size() - (uintptr_t)1))); | |
656 | 2503 os::commit_memory((char *)addr, thread->stack_base() - addr, |
2504 false ); | |
0 | 2505 return EXCEPTION_CONTINUE_EXECUTION; |
2506 } | |
2507 else | |
2508 #endif | |
2509 { | |
2510 // Null pointer exception. | |
2511 #ifdef _M_IA64 | |
7994 | 2512 // Process implicit null checks in compiled code. Note: Implicit null checks |
2513 // can happen even if "ImplicitNullChecks" is disabled, e.g. in vtable stubs. | |
2514 if (CodeCache::contains((void*) pc_unix_format) && !MacroAssembler::needs_explicit_null_check((intptr_t) addr)) { | |
2515 CodeBlob *cb = CodeCache::find_blob_unsafe(pc_unix_format); | |
2516 // Handle implicit null check in UEP method entry | |
2517 if (cb && (cb->is_frame_complete_at(pc) || | |
2518 (cb->is_nmethod() && ((nmethod *)cb)->inlinecache_check_contains(pc)))) { | |
2519 if (Verbose) { | |
2520 intptr_t *bundle_start = (intptr_t*) ((intptr_t) pc_unix_format & 0xFFFFFFFFFFFFFFF0); | |
2521 tty->print_cr("trap: null_check at " INTPTR_FORMAT " (SIGSEGV)", pc_unix_format); | |
2522 tty->print_cr(" to addr " INTPTR_FORMAT, addr); | |
2523 tty->print_cr(" bundle is " INTPTR_FORMAT " (high), " INTPTR_FORMAT " (low)", | |
2524 *(bundle_start + 1), *bundle_start); | |
0 | 2525 } |
2526 return Handle_Exception(exceptionInfo, | |
7994 | 2527 SharedRuntime::continuation_for_implicit_exception(thread, pc_unix_format, SharedRuntime::IMPLICIT_NULL)); |
0 | 2528 } |
7994 | 2529 } |
2530 | |
2531 // Implicit null checks were processed above. Hence, we should not reach | |
2532 // here in the usual case => die! | |
2533 if (Verbose) tty->print_raw_cr("Access violation, possible null pointer exception"); | |
0 | 2534 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
2535 exceptionInfo->ContextRecord); | |
2536 return EXCEPTION_CONTINUE_SEARCH; | |
7994 | 2537 |
2538 #else // !IA64 | |
0 | 2539 |
2540 // Windows 98 reports faulting addresses incorrectly | |
2541 if (!MacroAssembler::needs_explicit_null_check((intptr_t)addr) || | |
2542 !os::win32::is_nt()) { | |
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2543 address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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2544 if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
0 | 2545 } |
2546 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2547 exceptionInfo->ContextRecord); | |
2548 return EXCEPTION_CONTINUE_SEARCH; | |
2549 #endif | |
2550 } | |
2551 } | |
2552 } | |
2553 | |
2554 #ifdef _WIN64 | |
2555 // Special care for fast JNI field accessors. | |
2556 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks | |
2557 // in and the heap gets shrunk before the field access. | |
2558 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2559 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
2560 if (addr != (address)-1) { | |
2561 return Handle_Exception(exceptionInfo, addr); | |
2562 } | |
2563 } | |
2564 #endif | |
2565 | |
2566 // Stack overflow or null pointer exception in native code. | |
2567 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2568 exceptionInfo->ContextRecord); | |
2569 return EXCEPTION_CONTINUE_SEARCH; | |
7994 | 2570 } // /EXCEPTION_ACCESS_VIOLATION |
2571 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | |
2572 #if defined _M_IA64 | |
2573 else if ((exception_code == EXCEPTION_ILLEGAL_INSTRUCTION || | |
2574 exception_code == EXCEPTION_ILLEGAL_INSTRUCTION_2)) { | |
2575 M37 handle_wrong_method_break(0, NativeJump::HANDLE_WRONG_METHOD, PR0); | |
2576 | |
2577 // Compiled method patched to be non entrant? Following conditions must apply: | |
2578 // 1. must be first instruction in bundle | |
2579 // 2. must be a break instruction with appropriate code | |
2580 if((((uint64_t) pc & 0x0F) == 0) && | |
2581 (((IPF_Bundle*) pc)->get_slot0() == handle_wrong_method_break.bits())) { | |
2582 return Handle_Exception(exceptionInfo, | |
2583 (address)SharedRuntime::get_handle_wrong_method_stub()); | |
2584 } | |
2585 } // /EXCEPTION_ILLEGAL_INSTRUCTION | |
2586 #endif | |
2587 | |
0 | 2588 |
2589 if (in_java) { | |
2590 switch (exception_code) { | |
2591 case EXCEPTION_INT_DIVIDE_BY_ZERO: | |
2592 return Handle_Exception(exceptionInfo, SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO)); | |
2593 | |
2594 case EXCEPTION_INT_OVERFLOW: | |
2595 return Handle_IDiv_Exception(exceptionInfo); | |
2596 | |
2597 } // switch | |
2598 } | |
2599 #ifndef _WIN64 | |
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2600 if (((thread->thread_state() == _thread_in_Java) || |
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2601 (thread->thread_state() == _thread_in_native)) && |
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2602 exception_code != EXCEPTION_UNCAUGHT_CXX_EXCEPTION) |
0 | 2603 { |
2604 LONG result=Handle_FLT_Exception(exceptionInfo); | |
2605 if (result==EXCEPTION_CONTINUE_EXECUTION) return result; | |
2606 } | |
2607 #endif //_WIN64 | |
2608 } | |
2609 | |
2610 if (exception_code != EXCEPTION_BREAKPOINT) { | |
2611 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2612 exceptionInfo->ContextRecord); | |
2613 } | |
2614 return EXCEPTION_CONTINUE_SEARCH; | |
2615 } | |
2616 | |
2617 #ifndef _WIN64 | |
2618 // Special care for fast JNI accessors. | |
2619 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in and | |
2620 // the heap gets shrunk before the field access. | |
2621 // Need to install our own structured exception handler since native code may | |
2622 // install its own. | |
2623 LONG WINAPI fastJNIAccessorExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2624 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2625 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2626 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
2627 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
2628 if (addr != (address)-1) { | |
2629 return Handle_Exception(exceptionInfo, addr); | |
2630 } | |
2631 } | |
2632 return EXCEPTION_CONTINUE_SEARCH; | |
2633 } | |
2634 | |
2635 #define DEFINE_FAST_GETFIELD(Return,Fieldname,Result) \ | |
2636 Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, jobject obj, jfieldID fieldID) { \ | |
2637 __try { \ | |
2638 return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, obj, fieldID); \ | |
2639 } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { \ | |
2640 } \ | |
2641 return 0; \ | |
2642 } | |
2643 | |
2644 DEFINE_FAST_GETFIELD(jboolean, bool, Boolean) | |
2645 DEFINE_FAST_GETFIELD(jbyte, byte, Byte) | |
2646 DEFINE_FAST_GETFIELD(jchar, char, Char) | |
2647 DEFINE_FAST_GETFIELD(jshort, short, Short) | |
2648 DEFINE_FAST_GETFIELD(jint, int, Int) | |
2649 DEFINE_FAST_GETFIELD(jlong, long, Long) | |
2650 DEFINE_FAST_GETFIELD(jfloat, float, Float) | |
2651 DEFINE_FAST_GETFIELD(jdouble, double, Double) | |
2652 | |
2653 address os::win32::fast_jni_accessor_wrapper(BasicType type) { | |
2654 switch (type) { | |
2655 case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper; | |
2656 case T_BYTE: return (address)jni_fast_GetByteField_wrapper; | |
2657 case T_CHAR: return (address)jni_fast_GetCharField_wrapper; | |
2658 case T_SHORT: return (address)jni_fast_GetShortField_wrapper; | |
2659 case T_INT: return (address)jni_fast_GetIntField_wrapper; | |
2660 case T_LONG: return (address)jni_fast_GetLongField_wrapper; | |
2661 case T_FLOAT: return (address)jni_fast_GetFloatField_wrapper; | |
2662 case T_DOUBLE: return (address)jni_fast_GetDoubleField_wrapper; | |
2663 default: ShouldNotReachHere(); | |
2664 } | |
2665 return (address)-1; | |
2666 } | |
2667 #endif | |
2668 | |
2669 // Virtual Memory | |
2670 | |
2671 int os::vm_page_size() { return os::win32::vm_page_size(); } | |
2672 int os::vm_allocation_granularity() { | |
2673 return os::win32::vm_allocation_granularity(); | |
2674 } | |
2675 | |
2676 // Windows large page support is available on Windows 2003. In order to use | |
2677 // large page memory, the administrator must first assign additional privilege | |
2678 // to the user: | |
2679 // + select Control Panel -> Administrative Tools -> Local Security Policy | |
2680 // + select Local Policies -> User Rights Assignment | |
2681 // + double click "Lock pages in memory", add users and/or groups | |
2682 // + reboot | |
2683 // Note the above steps are needed for administrator as well, as administrators | |
2684 // by default do not have the privilege to lock pages in memory. | |
2685 // | |
2686 // Note about Windows 2003: although the API supports committing large page | |
2687 // memory on a page-by-page basis and VirtualAlloc() returns success under this | |
2688 // scenario, I found through experiment it only uses large page if the entire | |
2689 // memory region is reserved and committed in a single VirtualAlloc() call. | |
2690 // This makes Windows large page support more or less like Solaris ISM, in | |
2691 // that the entire heap must be committed upfront. This probably will change | |
2692 // in the future, if so the code below needs to be revisited. | |
2693 | |
2694 #ifndef MEM_LARGE_PAGES | |
2695 #define MEM_LARGE_PAGES 0x20000000 | |
2696 #endif | |
2697 | |
2698 static HANDLE _hProcess; | |
2699 static HANDLE _hToken; | |
2700 | |
3885 | 2701 // Container for NUMA node list info |
2702 class NUMANodeListHolder { | |
2703 private: | |
2704 int *_numa_used_node_list; // allocated below | |
2705 int _numa_used_node_count; | |
2706 | |
2707 void free_node_list() { | |
2708 if (_numa_used_node_list != NULL) { | |
6197 | 2709 FREE_C_HEAP_ARRAY(int, _numa_used_node_list, mtInternal); |
3885 | 2710 } |
2711 } | |
2712 | |
2713 public: | |
2714 NUMANodeListHolder() { | |
2715 _numa_used_node_count = 0; | |
2716 _numa_used_node_list = NULL; | |
2717 // do rest of initialization in build routine (after function pointers are set up) | |
2718 } | |
2719 | |
2720 ~NUMANodeListHolder() { | |
2721 free_node_list(); | |
2722 } | |
2723 | |
2724 bool build() { | |
2725 DWORD_PTR proc_aff_mask; | |
2726 DWORD_PTR sys_aff_mask; | |
2727 if (!GetProcessAffinityMask(GetCurrentProcess(), &proc_aff_mask, &sys_aff_mask)) return false; | |
2728 ULONG highest_node_number; | |
2729 if (!os::Kernel32Dll::GetNumaHighestNodeNumber(&highest_node_number)) return false; | |
2730 free_node_list(); | |
6197 | 2731 _numa_used_node_list = NEW_C_HEAP_ARRAY(int, highest_node_number + 1, mtInternal); |
3885 | 2732 for (unsigned int i = 0; i <= highest_node_number; i++) { |
2733 ULONGLONG proc_mask_numa_node; | |
2734 if (!os::Kernel32Dll::GetNumaNodeProcessorMask(i, &proc_mask_numa_node)) return false; | |
2735 if ((proc_aff_mask & proc_mask_numa_node)!=0) { | |
2736 _numa_used_node_list[_numa_used_node_count++] = i; | |
2737 } | |
2738 } | |
2739 return (_numa_used_node_count > 1); | |
2740 } | |
2741 | |
2742 int get_count() {return _numa_used_node_count;} | |
2743 int get_node_list_entry(int n) { | |
2744 // for indexes out of range, returns -1 | |
2745 return (n < _numa_used_node_count ? _numa_used_node_list[n] : -1); | |
2746 } | |
2747 | |
2748 } numa_node_list_holder; | |
2749 | |
2750 | |
2751 | |
0 | 2752 static size_t _large_page_size = 0; |
2753 | |
2754 static bool resolve_functions_for_large_page_init() { | |
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2755 return os::Kernel32Dll::GetLargePageMinimumAvailable() && |
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2756 os::Advapi32Dll::AdvapiAvailable(); |
0 | 2757 } |
2758 | |
2759 static bool request_lock_memory_privilege() { | |
2760 _hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, | |
2761 os::current_process_id()); | |
2762 | |
2763 LUID luid; | |
2764 if (_hProcess != NULL && | |
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2765 os::Advapi32Dll::OpenProcessToken(_hProcess, TOKEN_ADJUST_PRIVILEGES, &_hToken) && |
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2766 os::Advapi32Dll::LookupPrivilegeValue(NULL, "SeLockMemoryPrivilege", &luid)) { |
0 | 2767 |
2768 TOKEN_PRIVILEGES tp; | |
2769 tp.PrivilegeCount = 1; | |
2770 tp.Privileges[0].Luid = luid; | |
2771 tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; | |
2772 | |
2773 // AdjustTokenPrivileges() may return TRUE even when it couldn't change the | |
2774 // privilege. Check GetLastError() too. See MSDN document. | |
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2775 if (os::Advapi32Dll::AdjustTokenPrivileges(_hToken, false, &tp, sizeof(tp), NULL, NULL) && |
0 | 2776 (GetLastError() == ERROR_SUCCESS)) { |
2777 return true; | |
2778 } | |
2779 } | |
2780 | |
2781 return false; | |
2782 } | |
2783 | |
2784 static void cleanup_after_large_page_init() { | |
2785 if (_hProcess) CloseHandle(_hProcess); | |
2786 _hProcess = NULL; | |
2787 if (_hToken) CloseHandle(_hToken); | |
2788 _hToken = NULL; | |
2789 } | |
2790 | |
3885 | 2791 static bool numa_interleaving_init() { |
2792 bool success = false; | |
2793 bool use_numa_interleaving_specified = !FLAG_IS_DEFAULT(UseNUMAInterleaving); | |
2794 | |
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2795 // print a warning if UseNUMAInterleaving flag is specified on command line |
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2796 bool warn_on_failure = use_numa_interleaving_specified; |
3885 | 2797 # define WARN(msg) if (warn_on_failure) { warning(msg); } |
2798 | |
2799 // NUMAInterleaveGranularity cannot be less than vm_allocation_granularity (or _large_page_size if using large pages) | |
2800 size_t min_interleave_granularity = UseLargePages ? _large_page_size : os::vm_allocation_granularity(); | |
2801 NUMAInterleaveGranularity = align_size_up(NUMAInterleaveGranularity, min_interleave_granularity); | |
2802 | |
2803 if (os::Kernel32Dll::NumaCallsAvailable()) { | |
2804 if (numa_node_list_holder.build()) { | |
2805 if (PrintMiscellaneous && Verbose) { | |
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2806 tty->print("NUMA UsedNodeCount=%d, namely ", numa_node_list_holder.get_count()); |
3885 | 2807 for (int i = 0; i < numa_node_list_holder.get_count(); i++) { |
2808 tty->print("%d ", numa_node_list_holder.get_node_list_entry(i)); | |
2809 } | |
2810 tty->print("\n"); | |
2811 } | |
2812 success = true; | |
2813 } else { | |
2814 WARN("Process does not cover multiple NUMA nodes."); | |
2815 } | |
2816 } else { | |
2817 WARN("NUMA Interleaving is not supported by the operating system."); | |
2818 } | |
2819 if (!success) { | |
2820 if (use_numa_interleaving_specified) WARN("...Ignoring UseNUMAInterleaving flag."); | |
2821 } | |
2822 return success; | |
2823 #undef WARN | |
2824 } | |
2825 | |
2826 // this routine is used whenever we need to reserve a contiguous VA range | |
2827 // but we need to make separate VirtualAlloc calls for each piece of the range | |
2828 // Reasons for doing this: | |
2829 // * UseLargePagesIndividualAllocation was set (normally only needed on WS2003 but possible to be set otherwise) | |
2830 // * UseNUMAInterleaving requires a separate node for each piece | |
2831 static char* allocate_pages_individually(size_t bytes, char* addr, DWORD flags, DWORD prot, | |
2832 bool should_inject_error=false) { | |
2833 char * p_buf; | |
2834 // note: at setup time we guaranteed that NUMAInterleaveGranularity was aligned up to a page size | |
2835 size_t page_size = UseLargePages ? _large_page_size : os::vm_allocation_granularity(); | |
2836 size_t chunk_size = UseNUMAInterleaving ? NUMAInterleaveGranularity : page_size; | |
2837 | |
2838 // first reserve enough address space in advance since we want to be | |
2839 // able to break a single contiguous virtual address range into multiple | |
2840 // large page commits but WS2003 does not allow reserving large page space | |
2841 // so we just use 4K pages for reserve, this gives us a legal contiguous | |
2842 // address space. then we will deallocate that reservation, and re alloc | |
2843 // using large pages | |
2844 const size_t size_of_reserve = bytes + chunk_size; | |
2845 if (bytes > size_of_reserve) { | |
2846 // Overflowed. | |
2847 return NULL; | |
2848 } | |
2849 p_buf = (char *) VirtualAlloc(addr, | |
2850 size_of_reserve, // size of Reserve | |
2851 MEM_RESERVE, | |
2852 PAGE_READWRITE); | |
2853 // If reservation failed, return NULL | |
2854 if (p_buf == NULL) return NULL; | |
2855 | |
2856 os::release_memory(p_buf, bytes + chunk_size); | |
2857 | |
2858 // we still need to round up to a page boundary (in case we are using large pages) | |
2859 // but not to a chunk boundary (in case InterleavingGranularity doesn't align with page size) | |
2860 // instead we handle this in the bytes_to_rq computation below | |
2861 p_buf = (char *) align_size_up((size_t)p_buf, page_size); | |
2862 | |
2863 // now go through and allocate one chunk at a time until all bytes are | |
2864 // allocated | |
2865 size_t bytes_remaining = bytes; | |
2866 // An overflow of align_size_up() would have been caught above | |
2867 // in the calculation of size_of_reserve. | |
2868 char * next_alloc_addr = p_buf; | |
2869 HANDLE hProc = GetCurrentProcess(); | |
2870 | |
2871 #ifdef ASSERT | |
2872 // Variable for the failure injection | |
2873 long ran_num = os::random(); | |
2874 size_t fail_after = ran_num % bytes; | |
2875 #endif | |
2876 | |
2877 int count=0; | |
2878 while (bytes_remaining) { | |
2879 // select bytes_to_rq to get to the next chunk_size boundary | |
2880 | |
2881 size_t bytes_to_rq = MIN2(bytes_remaining, chunk_size - ((size_t)next_alloc_addr % chunk_size)); | |
2882 // Note allocate and commit | |
2883 char * p_new; | |
2884 | |
2885 #ifdef ASSERT | |
2886 bool inject_error_now = should_inject_error && (bytes_remaining <= fail_after); | |
2887 #else | |
2888 const bool inject_error_now = false; | |
2889 #endif | |
2890 | |
2891 if (inject_error_now) { | |
2892 p_new = NULL; | |
2893 } else { | |
2894 if (!UseNUMAInterleaving) { | |
2895 p_new = (char *) VirtualAlloc(next_alloc_addr, | |
2896 bytes_to_rq, | |
2897 flags, | |
2898 prot); | |
2899 } else { | |
2900 // get the next node to use from the used_node_list | |
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2901 assert(numa_node_list_holder.get_count() > 0, "Multiple NUMA nodes expected"); |
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2902 DWORD node = numa_node_list_holder.get_node_list_entry(count % numa_node_list_holder.get_count()); |
3885 | 2903 p_new = (char *)os::Kernel32Dll::VirtualAllocExNuma(hProc, |
2904 next_alloc_addr, | |
2905 bytes_to_rq, | |
2906 flags, | |
2907 prot, | |
2908 node); | |
2909 } | |
2910 } | |
2911 | |
2912 if (p_new == NULL) { | |
2913 // Free any allocated pages | |
2914 if (next_alloc_addr > p_buf) { | |
2915 // Some memory was committed so release it. | |
2916 size_t bytes_to_release = bytes - bytes_remaining; | |
2917 os::release_memory(p_buf, bytes_to_release); | |
2918 } | |
2919 #ifdef ASSERT | |
2920 if (should_inject_error) { | |
2921 if (TracePageSizes && Verbose) { | |
2922 tty->print_cr("Reserving pages individually failed."); | |
2923 } | |
2924 } | |
2925 #endif | |
2926 return NULL; | |
2927 } | |
2928 bytes_remaining -= bytes_to_rq; | |
2929 next_alloc_addr += bytes_to_rq; | |
2930 count++; | |
2931 } | |
2932 // made it this far, success | |
2933 return p_buf; | |
2934 } | |
2935 | |
2936 | |
2937 | |
3318
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7040485: Use transparent huge page on linux by default
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2938 void os::large_page_init() { |
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7040485: Use transparent huge page on linux by default
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|
2939 if (!UseLargePages) return; |
0 | 2940 |
2941 // print a warning if any large page related flag is specified on command line | |
2942 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || | |
2943 !FLAG_IS_DEFAULT(LargePageSizeInBytes); | |
2944 bool success = false; | |
2945 | |
2946 # define WARN(msg) if (warn_on_failure) { warning(msg); } | |
2947 if (resolve_functions_for_large_page_init()) { | |
2948 if (request_lock_memory_privilege()) { | |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
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diff
changeset
|
2949 size_t s = os::Kernel32Dll::GetLargePageMinimum(); |
0 | 2950 if (s) { |
2951 #if defined(IA32) || defined(AMD64) | |
2952 if (s > 4*M || LargePageSizeInBytes > 4*M) { | |
2953 WARN("JVM cannot use large pages bigger than 4mb."); | |
2954 } else { | |
2955 #endif | |
2956 if (LargePageSizeInBytes && LargePageSizeInBytes % s == 0) { | |
2957 _large_page_size = LargePageSizeInBytes; | |
2958 } else { | |
2959 _large_page_size = s; | |
2960 } | |
2961 success = true; | |
2962 #if defined(IA32) || defined(AMD64) | |
2963 } | |
2964 #endif | |
2965 } else { | |
2966 WARN("Large page is not supported by the processor."); | |
2967 } | |
2968 } else { | |
2969 WARN("JVM cannot use large page memory because it does not have enough privilege to lock pages in memory."); | |
2970 } | |
2971 } else { | |
2972 WARN("Large page is not supported by the operating system."); | |
2973 } | |
2974 #undef WARN | |
2975 | |
2976 const size_t default_page_size = (size_t) vm_page_size(); | |
2977 if (success && _large_page_size > default_page_size) { | |
2978 _page_sizes[0] = _large_page_size; | |
2979 _page_sizes[1] = default_page_size; | |
2980 _page_sizes[2] = 0; | |
2981 } | |
2982 | |
2983 cleanup_after_large_page_init(); | |
3318
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2984 UseLargePages = success; |
0 | 2985 } |
2986 | |
2987 // On win32, one cannot release just a part of reserved memory, it's an | |
2988 // all or nothing deal. When we split a reservation, we must break the | |
2989 // reservation into two reservations. | |
6197 | 2990 void os::pd_split_reserved_memory(char *base, size_t size, size_t split, |
0 | 2991 bool realloc) { |
2992 if (size > 0) { | |
2993 release_memory(base, size); | |
2994 if (realloc) { | |
2995 reserve_memory(split, base); | |
2996 } | |
2997 if (size != split) { | |
2998 reserve_memory(size - split, base + split); | |
2999 } | |
3000 } | |
3001 } | |
3002 | |
7433
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3003 // Multiple threads can race in this code but it's not possible to unmap small sections of |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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7206
diff
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|
3004 // virtual space to get requested alignment, like posix-like os's. |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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7206
diff
changeset
|
3005 // Windows prevents multiple thread from remapping over each other so this loop is thread-safe. |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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|
3006 char* os::reserve_memory_aligned(size_t size, size_t alignment) { |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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|
3007 assert((alignment & (os::vm_allocation_granularity() - 1)) == 0, |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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changeset
|
3008 "Alignment must be a multiple of allocation granularity (page size)"); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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|
3009 assert((size & (alignment -1)) == 0, "size must be 'alignment' aligned"); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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|
3010 |
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7173959: Jvm crashed during coherence exabus (tmb) testing
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|
3011 size_t extra_size = size + alignment; |
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7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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|
3012 assert(extra_size >= size, "overflow, size is too large to allow alignment"); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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parents:
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diff
changeset
|
3013 |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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diff
changeset
|
3014 char* aligned_base = NULL; |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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diff
changeset
|
3015 |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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diff
changeset
|
3016 do { |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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diff
changeset
|
3017 char* extra_base = os::reserve_memory(extra_size, NULL, alignment); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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diff
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|
3018 if (extra_base == NULL) { |
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7173959: Jvm crashed during coherence exabus (tmb) testing
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diff
changeset
|
3019 return NULL; |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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parents:
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diff
changeset
|
3020 } |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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diff
changeset
|
3021 // Do manual alignment |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
parents:
7206
diff
changeset
|
3022 aligned_base = (char*) align_size_up((uintptr_t) extra_base, alignment); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
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diff
changeset
|
3023 |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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diff
changeset
|
3024 os::release_memory(extra_base, extra_size); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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7206
diff
changeset
|
3025 |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
parents:
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diff
changeset
|
3026 aligned_base = os::reserve_memory(size, aligned_base); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
parents:
7206
diff
changeset
|
3027 |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
parents:
7206
diff
changeset
|
3028 } while (aligned_base == NULL); |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
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diff
changeset
|
3029 |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
parents:
7206
diff
changeset
|
3030 return aligned_base; |
730cc4ddd550
7173959: Jvm crashed during coherence exabus (tmb) testing
brutisso
parents:
7206
diff
changeset
|
3031 } |
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7173959: Jvm crashed during coherence exabus (tmb) testing
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changeset
|
3032 |
6197 | 3033 char* os::pd_reserve_memory(size_t bytes, char* addr, size_t alignment_hint) { |
0 | 3034 assert((size_t)addr % os::vm_allocation_granularity() == 0, |
3035 "reserve alignment"); | |
3036 assert(bytes % os::vm_allocation_granularity() == 0, "reserve block size"); | |
3885 | 3037 char* res; |
3038 // note that if UseLargePages is on, all the areas that require interleaving | |
3039 // will go thru reserve_memory_special rather than thru here. | |
3040 bool use_individual = (UseNUMAInterleaving && !UseLargePages); | |
3041 if (!use_individual) { | |
3042 res = (char*)VirtualAlloc(addr, bytes, MEM_RESERVE, PAGE_READWRITE); | |
3043 } else { | |
3044 elapsedTimer reserveTimer; | |
3045 if( Verbose && PrintMiscellaneous ) reserveTimer.start(); | |
3046 // in numa interleaving, we have to allocate pages individually | |
3047 // (well really chunks of NUMAInterleaveGranularity size) | |
3048 res = allocate_pages_individually(bytes, addr, MEM_RESERVE, PAGE_READWRITE); | |
3049 if (res == NULL) { | |
3050 warning("NUMA page allocation failed"); | |
3051 } | |
3052 if( Verbose && PrintMiscellaneous ) { | |
3053 reserveTimer.stop(); | |
7623
203f64878aab
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
7458
diff
changeset
|
3054 tty->print_cr("reserve_memory of %Ix bytes took " JLONG_FORMAT " ms (" JLONG_FORMAT " ticks)", bytes, |
3885 | 3055 reserveTimer.milliseconds(), reserveTimer.ticks()); |
3056 } | |
3057 } | |
0 | 3058 assert(res == NULL || addr == NULL || addr == res, |
3059 "Unexpected address from reserve."); | |
3885 | 3060 |
0 | 3061 return res; |
3062 } | |
3063 | |
3064 // Reserve memory at an arbitrary address, only if that area is | |
3065 // available (and not reserved for something else). | |
6197 | 3066 char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
0 | 3067 // Windows os::reserve_memory() fails of the requested address range is |
3068 // not avilable. | |
3069 return reserve_memory(bytes, requested_addr); | |
3070 } | |
3071 | |
3072 size_t os::large_page_size() { | |
3073 return _large_page_size; | |
3074 } | |
3075 | |
3076 bool os::can_commit_large_page_memory() { | |
3077 // Windows only uses large page memory when the entire region is reserved | |
3078 // and committed in a single VirtualAlloc() call. This may change in the | |
3079 // future, but with Windows 2003 it's not possible to commit on demand. | |
3080 return false; | |
3081 } | |
3082 | |
79
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
62
diff
changeset
|
3083 bool os::can_execute_large_page_memory() { |
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
62
diff
changeset
|
3084 return true; |
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents:
62
diff
changeset
|
3085 } |
82db0859acbe
6642862: Code cache allocation fails with large pages after 6588638
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62
diff
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|
3086 |
656 | 3087 char* os::reserve_memory_special(size_t bytes, char* addr, bool exec) { |
389
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
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356
diff
changeset
|
3088 |
717 | 3089 const DWORD prot = exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE; |
3885 | 3090 const DWORD flags = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES; |
3091 | |
3092 // with large pages, there are two cases where we need to use Individual Allocation | |
3093 // 1) the UseLargePagesIndividualAllocation flag is set (set by default on WS2003) | |
3094 // 2) NUMA Interleaving is enabled, in which case we use a different node for each page | |
3095 if (UseLargePagesIndividualAllocation || UseNUMAInterleaving) { | |
389
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6660681: Incrementally reserve pages on win server 2003 for better large page affinity
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356
diff
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|
3096 if (TracePageSizes && Verbose) { |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
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diff
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|
3097 tty->print_cr("Reserving large pages individually."); |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
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diff
changeset
|
3098 } |
3885 | 3099 char * p_buf = allocate_pages_individually(bytes, addr, flags, prot, LargePagesIndividualAllocationInjectError); |
3100 if (p_buf == NULL) { | |
3101 // give an appropriate warning message | |
3102 if (UseNUMAInterleaving) { | |
3103 warning("NUMA large page allocation failed, UseLargePages flag ignored"); | |
3104 } | |
3105 if (UseLargePagesIndividualAllocation) { | |
3106 warning("Individually allocated large pages failed, " | |
3107 "use -XX:-UseLargePagesIndividualAllocation to turn off"); | |
3108 } | |
389
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6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
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diff
changeset
|
3109 return NULL; |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
356
diff
changeset
|
3110 } |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
356
diff
changeset
|
3111 |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
356
diff
changeset
|
3112 return p_buf; |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
356
diff
changeset
|
3113 |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
356
diff
changeset
|
3114 } else { |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
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diff
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|
3115 // normal policy just allocate it all at once |
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changeset
|
3116 DWORD flag = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES; |
717 | 3117 char * res = (char *)VirtualAlloc(NULL, bytes, flag, prot); |
389
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6660681: Incrementally reserve pages on win server 2003 for better large page affinity
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|
3118 return res; |
ee21eaa8ffe1
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|
3119 } |
0 | 3120 } |
3121 | |
3122 bool os::release_memory_special(char* base, size_t bytes) { | |
3123 return release_memory(base, bytes); | |
3124 } | |
3125 | |
3126 void os::print_statistics() { | |
3127 } | |
3128 | |
6197 | 3129 bool os::pd_commit_memory(char* addr, size_t bytes, bool exec) { |
0 | 3130 if (bytes == 0) { |
3131 // Don't bother the OS with noops. | |
3132 return true; | |
3133 } | |
3134 assert((size_t) addr % os::vm_page_size() == 0, "commit on page boundaries"); | |
3135 assert(bytes % os::vm_page_size() == 0, "commit in page-sized chunks"); | |
3136 // Don't attempt to print anything if the OS call fails. We're | |
3137 // probably low on resources, so the print itself may cause crashes. | |
3885 | 3138 |
3139 // unless we have NUMAInterleaving enabled, the range of a commit | |
3140 // is always within a reserve covered by a single VirtualAlloc | |
3141 // in that case we can just do a single commit for the requested size | |
3142 if (!UseNUMAInterleaving) { | |
3143 if (VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_READWRITE) == NULL) return false; | |
3144 if (exec) { | |
3145 DWORD oldprot; | |
3146 // Windows doc says to use VirtualProtect to get execute permissions | |
3147 if (!VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &oldprot)) return false; | |
3148 } | |
3149 return true; | |
656 | 3150 } else { |
3885 | 3151 |
3152 // when NUMAInterleaving is enabled, the commit might cover a range that | |
3153 // came from multiple VirtualAlloc reserves (using allocate_pages_individually). | |
3154 // VirtualQuery can help us determine that. The RegionSize that VirtualQuery | |
3155 // returns represents the number of bytes that can be committed in one step. | |
3156 size_t bytes_remaining = bytes; | |
3157 char * next_alloc_addr = addr; | |
3158 while (bytes_remaining > 0) { | |
3159 MEMORY_BASIC_INFORMATION alloc_info; | |
3160 VirtualQuery(next_alloc_addr, &alloc_info, sizeof(alloc_info)); | |
3161 size_t bytes_to_rq = MIN2(bytes_remaining, (size_t)alloc_info.RegionSize); | |
3162 if (VirtualAlloc(next_alloc_addr, bytes_to_rq, MEM_COMMIT, PAGE_READWRITE) == NULL) | |
3163 return false; | |
3164 if (exec) { | |
3165 DWORD oldprot; | |
3166 if (!VirtualProtect(next_alloc_addr, bytes_to_rq, PAGE_EXECUTE_READWRITE, &oldprot)) | |
3167 return false; | |
3168 } | |
3169 bytes_remaining -= bytes_to_rq; | |
3170 next_alloc_addr += bytes_to_rq; | |
3171 } | |
3172 } | |
3173 // if we made it this far, return true | |
3174 return true; | |
0 | 3175 } |
3176 | |
6197 | 3177 bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint, |
656 | 3178 bool exec) { |
3179 return commit_memory(addr, size, exec); | |
0 | 3180 } |
3181 | |
6197 | 3182 bool os::pd_uncommit_memory(char* addr, size_t bytes) { |
0 | 3183 if (bytes == 0) { |
3184 // Don't bother the OS with noops. | |
3185 return true; | |
3186 } | |
3187 assert((size_t) addr % os::vm_page_size() == 0, "uncommit on page boundaries"); | |
3188 assert(bytes % os::vm_page_size() == 0, "uncommit in page-sized chunks"); | |
6197 | 3189 return (VirtualFree(addr, bytes, MEM_DECOMMIT) != 0); |
3190 } | |
3191 | |
3192 bool os::pd_release_memory(char* addr, size_t bytes) { | |
0 | 3193 return VirtualFree(addr, 0, MEM_RELEASE) != 0; |
3194 } | |
3195 | |
6197 | 3196 bool os::pd_create_stack_guard_pages(char* addr, size_t size) { |
1320
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
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1215
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3197 return os::commit_memory(addr, size); |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
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1215
diff
changeset
|
3198 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
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1215
diff
changeset
|
3199 |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
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1215
diff
changeset
|
3200 bool os::remove_stack_guard_pages(char* addr, size_t size) { |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
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1215
diff
changeset
|
3201 return os::uncommit_memory(addr, size); |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
coleenp
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1215
diff
changeset
|
3202 } |
3b3d12e645e7
6929067: Stack guard pages should be removed when thread is detached
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|
3203 |
237
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6716785: implicit null checks not triggering with CompressedOops
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|
3204 // Set protections specified |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
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|
3205 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
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196
diff
changeset
|
3206 bool is_committed) { |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
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196
diff
changeset
|
3207 unsigned int p = 0; |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
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196
diff
changeset
|
3208 switch (prot) { |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
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196
diff
changeset
|
3209 case MEM_PROT_NONE: p = PAGE_NOACCESS; break; |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
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196
diff
changeset
|
3210 case MEM_PROT_READ: p = PAGE_READONLY; break; |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
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196
diff
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|
3211 case MEM_PROT_RW: p = PAGE_READWRITE; break; |
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
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diff
changeset
|
3212 case MEM_PROT_RWX: p = PAGE_EXECUTE_READWRITE; break; |
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6716785: implicit null checks not triggering with CompressedOops
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196
diff
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|
3213 default: |
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3214 ShouldNotReachHere(); |
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3215 } |
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3216 |
0 | 3217 DWORD old_status; |
237
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3218 |
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3219 // Strange enough, but on Win32 one can change protection only for committed |
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3220 // memory, not a big deal anyway, as bytes less or equal than 64K |
656 | 3221 if (!is_committed && !commit_memory(addr, bytes, prot == MEM_PROT_RWX)) { |
237
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3222 fatal("cannot commit protection page"); |
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3223 } |
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3224 // One cannot use os::guard_memory() here, as on Win32 guard page |
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3225 // have different (one-shot) semantics, from MSDN on PAGE_GUARD: |
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3226 // |
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3227 // Pages in the region become guard pages. Any attempt to access a guard page |
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3228 // causes the system to raise a STATUS_GUARD_PAGE exception and turn off |
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3229 // the guard page status. Guard pages thus act as a one-time access alarm. |
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3230 return VirtualProtect(addr, bytes, p, &old_status) != 0; |
0 | 3231 } |
3232 | |
3233 bool os::guard_memory(char* addr, size_t bytes) { | |
3234 DWORD old_status; | |
477
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3235 return VirtualProtect(addr, bytes, PAGE_READWRITE | PAGE_GUARD, &old_status) != 0; |
0 | 3236 } |
3237 | |
3238 bool os::unguard_memory(char* addr, size_t bytes) { | |
3239 DWORD old_status; | |
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3240 return VirtualProtect(addr, bytes, PAGE_READWRITE, &old_status) != 0; |
0 | 3241 } |
3242 | |
6197 | 3243 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { } |
3244 void os::pd_free_memory(char *addr, size_t bytes, size_t alignment_hint) { } | |
0 | 3245 void os::numa_make_global(char *addr, size_t bytes) { } |
141 | 3246 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { } |
0 | 3247 bool os::numa_topology_changed() { return false; } |
3918
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3248 size_t os::numa_get_groups_num() { return MAX2(numa_node_list_holder.get_count(), 1); } |
0 | 3249 int os::numa_get_group_id() { return 0; } |
3250 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
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3251 if (numa_node_list_holder.get_count() == 0 && size > 0) { |
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3252 // Provide an answer for UMA systems |
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3253 ids[0] = 0; |
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3254 return 1; |
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3255 } else { |
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3256 // check for size bigger than actual groups_num |
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3257 size = MIN2(size, numa_get_groups_num()); |
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3258 for (int i = 0; i < (int)size; i++) { |
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3259 ids[i] = numa_node_list_holder.get_node_list_entry(i); |
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3260 } |
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3261 return size; |
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3262 } |
0 | 3263 } |
3264 | |
3265 bool os::get_page_info(char *start, page_info* info) { | |
3266 return false; | |
3267 } | |
3268 | |
3269 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
3270 return end; | |
3271 } | |
3272 | |
3273 char* os::non_memory_address_word() { | |
3274 // Must never look like an address returned by reserve_memory, | |
3275 // even in its subfields (as defined by the CPU immediate fields, | |
3276 // if the CPU splits constants across multiple instructions). | |
3277 return (char*)-1; | |
3278 } | |
3279 | |
3280 #define MAX_ERROR_COUNT 100 | |
3281 #define SYS_THREAD_ERROR 0xffffffffUL | |
3282 | |
3283 void os::pd_start_thread(Thread* thread) { | |
3284 DWORD ret = ResumeThread(thread->osthread()->thread_handle()); | |
3285 // Returns previous suspend state: | |
3286 // 0: Thread was not suspended | |
3287 // 1: Thread is running now | |
3288 // >1: Thread is still suspended. | |
3289 assert(ret != SYS_THREAD_ERROR, "StartThread failed"); // should propagate back | |
3290 } | |
3291 | |
3292 class HighResolutionInterval { | |
3293 // The default timer resolution seems to be 10 milliseconds. | |
3294 // (Where is this written down?) | |
3295 // If someone wants to sleep for only a fraction of the default, | |
3296 // then we set the timer resolution down to 1 millisecond for | |
3297 // the duration of their interval. | |
3298 // We carefully set the resolution back, since otherwise we | |
3299 // seem to incur an overhead (3%?) that we don't need. | |
3300 // CONSIDER: if ms is small, say 3, then we should run with a high resolution time. | |
3301 // Buf if ms is large, say 500, or 503, we should avoid the call to timeBeginPeriod(). | |
3302 // Alternatively, we could compute the relative error (503/500 = .6%) and only use | |
3303 // timeBeginPeriod() if the relative error exceeded some threshold. | |
3304 // timeBeginPeriod() has been linked to problems with clock drift on win32 systems and | |
3305 // to decreased efficiency related to increased timer "tick" rates. We want to minimize | |
3306 // (a) calls to timeBeginPeriod() and timeEndPeriod() and (b) time spent with high | |
3307 // resolution timers running. | |
3308 private: | |
3309 jlong resolution; | |
3310 public: | |
3311 HighResolutionInterval(jlong ms) { | |
3312 resolution = ms % 10L; | |
3313 if (resolution != 0) { | |
3314 MMRESULT result = timeBeginPeriod(1L); | |
3315 } | |
3316 } | |
3317 ~HighResolutionInterval() { | |
3318 if (resolution != 0) { | |
3319 MMRESULT result = timeEndPeriod(1L); | |
3320 } | |
3321 resolution = 0L; | |
3322 } | |
3323 }; | |
3324 | |
3325 int os::sleep(Thread* thread, jlong ms, bool interruptable) { | |
3326 jlong limit = (jlong) MAXDWORD; | |
3327 | |
3328 while(ms > limit) { | |
3329 int res; | |
3330 if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT) | |
3331 return res; | |
3332 ms -= limit; | |
3333 } | |
3334 | |
3335 assert(thread == Thread::current(), "thread consistency check"); | |
3336 OSThread* osthread = thread->osthread(); | |
3337 OSThreadWaitState osts(osthread, false /* not Object.wait() */); | |
3338 int result; | |
3339 if (interruptable) { | |
3340 assert(thread->is_Java_thread(), "must be java thread"); | |
3341 JavaThread *jt = (JavaThread *) thread; | |
3342 ThreadBlockInVM tbivm(jt); | |
3343 | |
3344 jt->set_suspend_equivalent(); | |
3345 // cleared by handle_special_suspend_equivalent_condition() or | |
3346 // java_suspend_self() via check_and_wait_while_suspended() | |
3347 | |
3348 HANDLE events[1]; | |
3349 events[0] = osthread->interrupt_event(); | |
3350 HighResolutionInterval *phri=NULL; | |
3351 if(!ForceTimeHighResolution) | |
3352 phri = new HighResolutionInterval( ms ); | |
3353 if (WaitForMultipleObjects(1, events, FALSE, (DWORD)ms) == WAIT_TIMEOUT) { | |
3354 result = OS_TIMEOUT; | |
3355 } else { | |
3356 ResetEvent(osthread->interrupt_event()); | |
3357 osthread->set_interrupted(false); | |
3358 result = OS_INTRPT; | |
3359 } | |
3360 delete phri; //if it is NULL, harmless | |
3361 | |
3362 // were we externally suspended while we were waiting? | |
3363 jt->check_and_wait_while_suspended(); | |
3364 } else { | |
3365 assert(!thread->is_Java_thread(), "must not be java thread"); | |
3366 Sleep((long) ms); | |
3367 result = OS_TIMEOUT; | |
3368 } | |
3369 return result; | |
3370 } | |
3371 | |
3372 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
3373 void os::infinite_sleep() { | |
3374 while (true) { // sleep forever ... | |
3375 Sleep(100000); // ... 100 seconds at a time | |
3376 } | |
3377 } | |
3378 | |
3379 typedef BOOL (WINAPI * STTSignature)(void) ; | |
3380 | |
3381 os::YieldResult os::NakedYield() { | |
3382 // Use either SwitchToThread() or Sleep(0) | |
3383 // Consider passing back the return value from SwitchToThread(). | |
3833
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3384 if (os::Kernel32Dll::SwitchToThreadAvailable()) { |
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3385 return SwitchToThread() ? os::YIELD_SWITCHED : os::YIELD_NONEREADY ; |
0 | 3386 } else { |
3833
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3387 Sleep(0); |
0 | 3388 } |
3389 return os::YIELD_UNKNOWN ; | |
3390 } | |
3391 | |
3392 void os::yield() { os::NakedYield(); } | |
3393 | |
3394 void os::yield_all(int attempts) { | |
3395 // Yields to all threads, including threads with lower priorities | |
3396 Sleep(1); | |
3397 } | |
3398 | |
3399 // Win32 only gives you access to seven real priorities at a time, | |
3400 // so we compress Java's ten down to seven. It would be better | |
3401 // if we dynamically adjusted relative priorities. | |
3402 | |
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3403 int os::java_to_os_priority[CriticalPriority + 1] = { |
0 | 3404 THREAD_PRIORITY_IDLE, // 0 Entry should never be used |
3405 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
3406 THREAD_PRIORITY_LOWEST, // 2 | |
3407 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
3408 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
3409 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
3410 THREAD_PRIORITY_NORMAL, // 6 | |
3411 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
3412 THREAD_PRIORITY_ABOVE_NORMAL, // 8 | |
3413 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
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3414 THREAD_PRIORITY_HIGHEST, // 10 MaxPriority |
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3415 THREAD_PRIORITY_HIGHEST // 11 CriticalPriority |
0 | 3416 }; |
3417 | |
4854
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3418 int prio_policy1[CriticalPriority + 1] = { |
0 | 3419 THREAD_PRIORITY_IDLE, // 0 Entry should never be used |
3420 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
3421 THREAD_PRIORITY_LOWEST, // 2 | |
3422 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
3423 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
3424 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
3425 THREAD_PRIORITY_ABOVE_NORMAL, // 6 | |
3426 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
3427 THREAD_PRIORITY_HIGHEST, // 8 | |
3428 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
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3429 THREAD_PRIORITY_TIME_CRITICAL, // 10 MaxPriority |
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3430 THREAD_PRIORITY_TIME_CRITICAL // 11 CriticalPriority |
0 | 3431 }; |
3432 | |
3433 static int prio_init() { | |
3434 // If ThreadPriorityPolicy is 1, switch tables | |
3435 if (ThreadPriorityPolicy == 1) { | |
3436 int i; | |
4854
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3437 for (i = 0; i < CriticalPriority + 1; i++) { |
0 | 3438 os::java_to_os_priority[i] = prio_policy1[i]; |
3439 } | |
3440 } | |
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3441 if (UseCriticalJavaThreadPriority) { |
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3442 os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority] ; |
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3443 } |
0 | 3444 return 0; |
3445 } | |
3446 | |
3447 OSReturn os::set_native_priority(Thread* thread, int priority) { | |
3448 if (!UseThreadPriorities) return OS_OK; | |
3449 bool ret = SetThreadPriority(thread->osthread()->thread_handle(), priority) != 0; | |
3450 return ret ? OS_OK : OS_ERR; | |
3451 } | |
3452 | |
3453 OSReturn os::get_native_priority(const Thread* const thread, int* priority_ptr) { | |
3454 if ( !UseThreadPriorities ) { | |
3455 *priority_ptr = java_to_os_priority[NormPriority]; | |
3456 return OS_OK; | |
3457 } | |
3458 int os_prio = GetThreadPriority(thread->osthread()->thread_handle()); | |
3459 if (os_prio == THREAD_PRIORITY_ERROR_RETURN) { | |
3460 assert(false, "GetThreadPriority failed"); | |
3461 return OS_ERR; | |
3462 } | |
3463 *priority_ptr = os_prio; | |
3464 return OS_OK; | |
3465 } | |
3466 | |
3467 | |
3468 // Hint to the underlying OS that a task switch would not be good. | |
3469 // Void return because it's a hint and can fail. | |
3470 void os::hint_no_preempt() {} | |
3471 | |
3472 void os::interrupt(Thread* thread) { | |
3473 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
3474 "possibility of dangling Thread pointer"); | |
3475 | |
3476 OSThread* osthread = thread->osthread(); | |
3477 osthread->set_interrupted(true); | |
3478 // More than one thread can get here with the same value of osthread, | |
3479 // resulting in multiple notifications. We do, however, want the store | |
3480 // to interrupted() to be visible to other threads before we post | |
3481 // the interrupt event. | |
3482 OrderAccess::release(); | |
3483 SetEvent(osthread->interrupt_event()); | |
3484 // For JSR166: unpark after setting status | |
3485 if (thread->is_Java_thread()) | |
3486 ((JavaThread*)thread)->parker()->unpark(); | |
3487 | |
3488 ParkEvent * ev = thread->_ParkEvent ; | |
3489 if (ev != NULL) ev->unpark() ; | |
3490 | |
3491 } | |
3492 | |
3493 | |
3494 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
3495 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
3496 "possibility of dangling Thread pointer"); | |
3497 | |
3498 OSThread* osthread = thread->osthread(); | |
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3499 bool interrupted = osthread->interrupted(); |
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3500 // There is no synchronization between the setting of the interrupt |
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3501 // and it being cleared here. It is critical - see 6535709 - that |
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3502 // we only clear the interrupt state, and reset the interrupt event, |
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3503 // if we are going to report that we were indeed interrupted - else |
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3504 // an interrupt can be "lost", leading to spurious wakeups or lost wakeups |
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3505 // depending on the timing |
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3506 if (interrupted && clear_interrupted) { |
0 | 3507 osthread->set_interrupted(false); |
3508 ResetEvent(osthread->interrupt_event()); | |
3509 } // Otherwise leave the interrupted state alone | |
3510 | |
3511 return interrupted; | |
3512 } | |
3513 | |
3514 // Get's a pc (hint) for a running thread. Currently used only for profiling. | |
3515 ExtendedPC os::get_thread_pc(Thread* thread) { | |
3516 CONTEXT context; | |
3517 context.ContextFlags = CONTEXT_CONTROL; | |
3518 HANDLE handle = thread->osthread()->thread_handle(); | |
3519 #ifdef _M_IA64 | |
3520 assert(0, "Fix get_thread_pc"); | |
3521 return ExtendedPC(NULL); | |
3522 #else | |
3523 if (GetThreadContext(handle, &context)) { | |
3524 #ifdef _M_AMD64 | |
3525 return ExtendedPC((address) context.Rip); | |
3526 #else | |
3527 return ExtendedPC((address) context.Eip); | |
3528 #endif | |
3529 } else { | |
3530 return ExtendedPC(NULL); | |
3531 } | |
3532 #endif | |
3533 } | |
3534 | |
3535 // GetCurrentThreadId() returns DWORD | |
3536 intx os::current_thread_id() { return GetCurrentThreadId(); } | |
3537 | |
3538 static int _initial_pid = 0; | |
3539 | |
3540 int os::current_process_id() | |
3541 { | |
3542 return (_initial_pid ? _initial_pid : _getpid()); | |
3543 } | |
3544 | |
3545 int os::win32::_vm_page_size = 0; | |
3546 int os::win32::_vm_allocation_granularity = 0; | |
3547 int os::win32::_processor_type = 0; | |
3548 // Processor level is not available on non-NT systems, use vm_version instead | |
3549 int os::win32::_processor_level = 0; | |
3550 julong os::win32::_physical_memory = 0; | |
3551 size_t os::win32::_default_stack_size = 0; | |
3552 | |
3553 intx os::win32::_os_thread_limit = 0; | |
3554 volatile intx os::win32::_os_thread_count = 0; | |
3555 | |
3556 bool os::win32::_is_nt = false; | |
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3557 bool os::win32::_is_windows_2003 = false; |
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3558 bool os::win32::_is_windows_server = false; |
0 | 3559 |
3560 void os::win32::initialize_system_info() { | |
3561 SYSTEM_INFO si; | |
3562 GetSystemInfo(&si); | |
3563 _vm_page_size = si.dwPageSize; | |
3564 _vm_allocation_granularity = si.dwAllocationGranularity; | |
3565 _processor_type = si.dwProcessorType; | |
3566 _processor_level = si.wProcessorLevel; | |
1123
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3567 set_processor_count(si.dwNumberOfProcessors); |
0 | 3568 |
877
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3569 MEMORYSTATUSEX ms; |
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3570 ms.dwLength = sizeof(ms); |
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3571 |
0 | 3572 // also returns dwAvailPhys (free physical memory bytes), dwTotalVirtual, dwAvailVirtual, |
3573 // dwMemoryLoad (% of memory in use) | |
877
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3574 GlobalMemoryStatusEx(&ms); |
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3575 _physical_memory = ms.ullTotalPhys; |
0 | 3576 |
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|
3577 OSVERSIONINFOEX oi; |
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|
3578 oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
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3579 GetVersionEx((OSVERSIONINFO*)&oi); |
0 | 3580 switch(oi.dwPlatformId) { |
3581 case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break; | |
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3582 case VER_PLATFORM_WIN32_NT: |
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3583 _is_nt = true; |
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3584 { |
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3585 int os_vers = oi.dwMajorVersion * 1000 + oi.dwMinorVersion; |
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3586 if (os_vers == 5002) { |
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3587 _is_windows_2003 = true; |
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3588 } |
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3589 if (oi.wProductType == VER_NT_DOMAIN_CONTROLLER || |
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3590 oi.wProductType == VER_NT_SERVER) { |
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3591 _is_windows_server = true; |
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3592 } |
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3593 } |
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3594 break; |
0 | 3595 default: fatal("Unknown platform"); |
3596 } | |
3597 | |
3598 _default_stack_size = os::current_stack_size(); | |
3599 assert(_default_stack_size > (size_t) _vm_page_size, "invalid stack size"); | |
3600 assert((_default_stack_size & (_vm_page_size - 1)) == 0, | |
3601 "stack size not a multiple of page size"); | |
3602 | |
3603 initialize_performance_counter(); | |
3604 | |
3605 // Win95/Win98 scheduler bug work-around. The Win95/98 scheduler is | |
3606 // known to deadlock the system, if the VM issues to thread operations with | |
3607 // a too high frequency, e.g., such as changing the priorities. | |
3608 // The 6000 seems to work well - no deadlocks has been notices on the test | |
3609 // programs that we have seen experience this problem. | |
3610 if (!os::win32::is_nt()) { | |
3611 StarvationMonitorInterval = 6000; | |
3612 } | |
3613 } | |
3614 | |
3615 | |
3833
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3616 HINSTANCE os::win32::load_Windows_dll(const char* name, char *ebuf, int ebuflen) { |
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3617 char path[MAX_PATH]; |
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3618 DWORD size; |
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3619 DWORD pathLen = (DWORD)sizeof(path); |
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3620 HINSTANCE result = NULL; |
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3621 |
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3622 // only allow library name without path component |
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3623 assert(strchr(name, '\\') == NULL, "path not allowed"); |
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3624 assert(strchr(name, ':') == NULL, "path not allowed"); |
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3625 if (strchr(name, '\\') != NULL || strchr(name, ':') != NULL) { |
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3626 jio_snprintf(ebuf, ebuflen, |
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|
3627 "Invalid parameter while calling os::win32::load_windows_dll(): cannot take path: %s", name); |
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3628 return NULL; |
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|
3629 } |
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|
3630 |
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|
3631 // search system directory |
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3632 if ((size = GetSystemDirectory(path, pathLen)) > 0) { |
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3633 strcat(path, "\\"); |
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3634 strcat(path, name); |
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|
3635 if ((result = (HINSTANCE)os::dll_load(path, ebuf, ebuflen)) != NULL) { |
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|
3636 return result; |
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|
3637 } |
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|
3638 } |
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3639 |
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|
3640 // try Windows directory |
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3641 if ((size = GetWindowsDirectory(path, pathLen)) > 0) { |
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3642 strcat(path, "\\"); |
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3643 strcat(path, name); |
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3644 if ((result = (HINSTANCE)os::dll_load(path, ebuf, ebuflen)) != NULL) { |
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3645 return result; |
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|
3646 } |
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|
3647 } |
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|
3648 |
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|
3649 jio_snprintf(ebuf, ebuflen, |
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|
3650 "os::win32::load_windows_dll() cannot load %s from system directories.", name); |
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3651 return NULL; |
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|
3652 } |
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|
3653 |
0 | 3654 void os::win32::setmode_streams() { |
3655 _setmode(_fileno(stdin), _O_BINARY); | |
3656 _setmode(_fileno(stdout), _O_BINARY); | |
3657 _setmode(_fileno(stderr), _O_BINARY); | |
3658 } | |
3659 | |
3660 | |
2302
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|
3661 bool os::is_debugger_attached() { |
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|
3662 return IsDebuggerPresent() ? true : false; |
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|
3663 } |
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|
3664 |
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|
3665 |
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|
3666 void os::wait_for_keypress_at_exit(void) { |
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|
3667 if (PauseAtExit) { |
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|
3668 fprintf(stderr, "Press any key to continue...\n"); |
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|
3669 fgetc(stdin); |
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|
3670 } |
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|
3671 } |
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|
3672 |
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|
3673 |
0 | 3674 int os::message_box(const char* title, const char* message) { |
3675 int result = MessageBox(NULL, message, title, | |
3676 MB_YESNO | MB_ICONERROR | MB_SYSTEMMODAL | MB_DEFAULT_DESKTOP_ONLY); | |
3677 return result == IDYES; | |
3678 } | |
3679 | |
3680 int os::allocate_thread_local_storage() { | |
3681 return TlsAlloc(); | |
3682 } | |
3683 | |
3684 | |
3685 void os::free_thread_local_storage(int index) { | |
3686 TlsFree(index); | |
3687 } | |
3688 | |
3689 | |
3690 void os::thread_local_storage_at_put(int index, void* value) { | |
3691 TlsSetValue(index, value); | |
3692 assert(thread_local_storage_at(index) == value, "Just checking"); | |
3693 } | |
3694 | |
3695 | |
3696 void* os::thread_local_storage_at(int index) { | |
3697 return TlsGetValue(index); | |
3698 } | |
3699 | |
3700 | |
3701 #ifndef PRODUCT | |
3702 #ifndef _WIN64 | |
3703 // Helpers to check whether NX protection is enabled | |
3704 int nx_exception_filter(_EXCEPTION_POINTERS *pex) { | |
3705 if (pex->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
3706 pex->ExceptionRecord->NumberParameters > 0 && | |
3707 pex->ExceptionRecord->ExceptionInformation[0] == | |
3708 EXCEPTION_INFO_EXEC_VIOLATION) { | |
3709 return EXCEPTION_EXECUTE_HANDLER; | |
3710 } | |
3711 return EXCEPTION_CONTINUE_SEARCH; | |
3712 } | |
3713 | |
3714 void nx_check_protection() { | |
3715 // If NX is enabled we'll get an exception calling into code on the stack | |
3716 char code[] = { (char)0xC3 }; // ret | |
3717 void *code_ptr = (void *)code; | |
3718 __try { | |
3719 __asm call code_ptr | |
3720 } __except(nx_exception_filter((_EXCEPTION_POINTERS*)_exception_info())) { | |
3721 tty->print_raw_cr("NX protection detected."); | |
3722 } | |
3723 } | |
3724 #endif // _WIN64 | |
3725 #endif // PRODUCT | |
3726 | |
3727 // this is called _before_ the global arguments have been parsed | |
3728 void os::init(void) { | |
3729 _initial_pid = _getpid(); | |
3730 | |
3731 init_random(1234567); | |
3732 | |
3733 win32::initialize_system_info(); | |
3734 win32::setmode_streams(); | |
3735 init_page_sizes((size_t) win32::vm_page_size()); | |
3736 | |
3737 // For better scalability on MP systems (must be called after initialize_system_info) | |
3738 #ifndef PRODUCT | |
3739 if (is_MP()) { | |
3740 NoYieldsInMicrolock = true; | |
3741 } | |
3742 #endif | |
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3743 // This may be overridden later when argument processing is done. |
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3744 FLAG_SET_ERGO(bool, UseLargePagesIndividualAllocation, |
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3745 os::win32::is_windows_2003()); |
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3746 |
0 | 3747 // Initialize main_process and main_thread |
3748 main_process = GetCurrentProcess(); // Remember main_process is a pseudo handle | |
389
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3749 if (!DuplicateHandle(main_process, GetCurrentThread(), main_process, |
0 | 3750 &main_thread, THREAD_ALL_ACCESS, false, 0)) { |
3751 fatal("DuplicateHandle failed\n"); | |
3752 } | |
3753 main_thread_id = (int) GetCurrentThreadId(); | |
3754 } | |
3755 | |
3756 // To install functions for atexit processing | |
3757 extern "C" { | |
3758 static void perfMemory_exit_helper() { | |
3759 perfMemory_exit(); | |
3760 } | |
3761 } | |
3762 | |
3763 // this is called _after_ the global arguments have been parsed | |
3764 jint os::init_2(void) { | |
3765 // Allocate a single page and mark it as readable for safepoint polling | |
3766 address polling_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READONLY); | |
3767 guarantee( polling_page != NULL, "Reserve Failed for polling page"); | |
3768 | |
3769 address return_page = (address)VirtualAlloc(polling_page, os::vm_page_size(), MEM_COMMIT, PAGE_READONLY); | |
3770 guarantee( return_page != NULL, "Commit Failed for polling page"); | |
3771 | |
3772 os::set_polling_page( polling_page ); | |
3773 | |
3774 #ifndef PRODUCT | |
3775 if( Verbose && PrintMiscellaneous ) | |
3776 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
3777 #endif | |
3778 | |
3779 if (!UseMembar) { | |
656 | 3780 address mem_serialize_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READWRITE); |
0 | 3781 guarantee( mem_serialize_page != NULL, "Reserve Failed for memory serialize page"); |
3782 | |
656 | 3783 return_page = (address)VirtualAlloc(mem_serialize_page, os::vm_page_size(), MEM_COMMIT, PAGE_READWRITE); |
0 | 3784 guarantee( return_page != NULL, "Commit Failed for memory serialize page"); |
3785 | |
3786 os::set_memory_serialize_page( mem_serialize_page ); | |
3787 | |
3788 #ifndef PRODUCT | |
3789 if(Verbose && PrintMiscellaneous) | |
3790 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
3791 #endif | |
3885 | 3792 } |
0 | 3793 |
3318
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|
3794 os::large_page_init(); |
0 | 3795 |
3796 // Setup Windows Exceptions | |
3797 | |
3798 // for debugging float code generation bugs | |
3799 if (ForceFloatExceptions) { | |
3800 #ifndef _WIN64 | |
3801 static long fp_control_word = 0; | |
3802 __asm { fstcw fp_control_word } | |
3803 // see Intel PPro Manual, Vol. 2, p 7-16 | |
3804 const long precision = 0x20; | |
3805 const long underflow = 0x10; | |
3806 const long overflow = 0x08; | |
3807 const long zero_div = 0x04; | |
3808 const long denorm = 0x02; | |
3809 const long invalid = 0x01; | |
3810 fp_control_word |= invalid; | |
3811 __asm { fldcw fp_control_word } | |
3812 #endif | |
3813 } | |
3814 | |
3815 // If stack_commit_size is 0, windows will reserve the default size, | |
3816 // but only commit a small portion of it. | |
3817 size_t stack_commit_size = round_to(ThreadStackSize*K, os::vm_page_size()); | |
3818 size_t default_reserve_size = os::win32::default_stack_size(); | |
3819 size_t actual_reserve_size = stack_commit_size; | |
3820 if (stack_commit_size < default_reserve_size) { | |
3821 // If stack_commit_size == 0, we want this too | |
3822 actual_reserve_size = default_reserve_size; | |
3823 } | |
3824 | |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3825 // Check minimum allowable stack size for thread creation and to initialize |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3826 // the java system classes, including StackOverflowError - depends on page |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3827 // size. Add a page for compiler2 recursion in main thread. |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3828 // Add in 2*BytesPerWord times page size to account for VM stack during |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3829 // class initialization depending on 32 or 64 bit VM. |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3830 size_t min_stack_allowed = |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3831 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3832 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size(); |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3833 if (actual_reserve_size < min_stack_allowed) { |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3834 tty->print_cr("\nThe stack size specified is too small, " |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3835 "Specify at least %dk", |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3836 min_stack_allowed / K); |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3837 return JNI_ERR; |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3838 } |
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3839 |
0 | 3840 JavaThread::set_stack_size_at_create(stack_commit_size); |
3841 | |
3842 // Calculate theoretical max. size of Threads to guard gainst artifical | |
3843 // out-of-memory situations, where all available address-space has been | |
3844 // reserved by thread stacks. | |
3845 assert(actual_reserve_size != 0, "Must have a stack"); | |
3846 | |
3847 // Calculate the thread limit when we should start doing Virtual Memory | |
3848 // banging. Currently when the threads will have used all but 200Mb of space. | |
3849 // | |
3850 // TODO: consider performing a similar calculation for commit size instead | |
3851 // as reserve size, since on a 64-bit platform we'll run into that more | |
3852 // often than running out of virtual memory space. We can use the | |
3853 // lower value of the two calculations as the os_thread_limit. | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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79
diff
changeset
|
3854 size_t max_address_space = ((size_t)1 << (BitsPerWord - 1)) - (200 * K * K); |
0 | 3855 win32::_os_thread_limit = (intx)(max_address_space / actual_reserve_size); |
3856 | |
3857 // at exit methods are called in the reverse order of their registration. | |
3858 // there is no limit to the number of functions registered. atexit does | |
3859 // not set errno. | |
3860 | |
3861 if (PerfAllowAtExitRegistration) { | |
3862 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
3863 // atexit functions can be delayed until process exit time, which | |
3864 // can be problematic for embedded VM situations. Embedded VMs should | |
3865 // call DestroyJavaVM() to assure that VM resources are released. | |
3866 | |
3867 // note: perfMemory_exit_helper atexit function may be removed in | |
3868 // the future if the appropriate cleanup code can be added to the | |
3869 // VM_Exit VMOperation's doit method. | |
3870 if (atexit(perfMemory_exit_helper) != 0) { | |
3871 warning("os::init_2 atexit(perfMemory_exit_helper) failed"); | |
3872 } | |
3873 } | |
3874 | |
3875 #ifndef _WIN64 | |
3876 // Print something if NX is enabled (win32 on AMD64) | |
3877 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) nx_check_protection()); | |
3878 #endif | |
3879 | |
3880 // initialize thread priority policy | |
3881 prio_init(); | |
3882 | |
3918
a6128a8ed624
7086226: UseNUMA fails on old versions of windows
iveresov
parents:
3885
diff
changeset
|
3883 if (UseNUMA && !ForceNUMA) { |
a6128a8ed624
7086226: UseNUMA fails on old versions of windows
iveresov
parents:
3885
diff
changeset
|
3884 UseNUMA = false; // We don't fully support this yet |
a6128a8ed624
7086226: UseNUMA fails on old versions of windows
iveresov
parents:
3885
diff
changeset
|
3885 } |
a6128a8ed624
7086226: UseNUMA fails on old versions of windows
iveresov
parents:
3885
diff
changeset
|
3886 |
3885 | 3887 if (UseNUMAInterleaving) { |
3888 // first check whether this Windows OS supports VirtualAllocExNuma, if not ignore this flag | |
3889 bool success = numa_interleaving_init(); | |
3890 if (!success) UseNUMAInterleaving = false; | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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diff
changeset
|
3891 } |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
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|
3892 |
0 | 3893 return JNI_OK; |
3894 } | |
3895 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3896 void os::init_3(void) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3897 return; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1552
diff
changeset
|
3898 } |
0 | 3899 |
3900 // Mark the polling page as unreadable | |
3901 void os::make_polling_page_unreadable(void) { | |
3902 DWORD old_status; | |
3903 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_NOACCESS, &old_status) ) | |
3904 fatal("Could not disable polling page"); | |
3905 }; | |
3906 | |
3907 // Mark the polling page as readable | |
3908 void os::make_polling_page_readable(void) { | |
3909 DWORD old_status; | |
3910 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_READONLY, &old_status) ) | |
3911 fatal("Could not enable polling page"); | |
3912 }; | |
3913 | |
3914 | |
3915 int os::stat(const char *path, struct stat *sbuf) { | |
3916 char pathbuf[MAX_PATH]; | |
3917 if (strlen(path) > MAX_PATH - 1) { | |
3918 errno = ENAMETOOLONG; | |
3919 return -1; | |
3920 } | |
1980
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diff
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|
3921 os::native_path(strcpy(pathbuf, path)); |
0 | 3922 int ret = ::stat(pathbuf, sbuf); |
3923 if (sbuf != NULL && UseUTCFileTimestamp) { | |
3924 // Fix for 6539723. st_mtime returned from stat() is dependent on | |
3925 // the system timezone and so can return different values for the | |
3926 // same file if/when daylight savings time changes. This adjustment | |
3927 // makes sure the same timestamp is returned regardless of the TZ. | |
3928 // | |
3929 // See: | |
3930 // http://msdn.microsoft.com/library/ | |
3931 // default.asp?url=/library/en-us/sysinfo/base/ | |
3932 // time_zone_information_str.asp | |
3933 // and | |
3934 // http://msdn.microsoft.com/library/default.asp?url= | |
3935 // /library/en-us/sysinfo/base/settimezoneinformation.asp | |
3936 // | |
3937 // NOTE: there is a insidious bug here: If the timezone is changed | |
3938 // after the call to stat() but before 'GetTimeZoneInformation()', then | |
3939 // the adjustment we do here will be wrong and we'll return the wrong | |
3940 // value (which will likely end up creating an invalid class data | |
3941 // archive). Absent a better API for this, or some time zone locking | |
3942 // mechanism, we'll have to live with this risk. | |
3943 TIME_ZONE_INFORMATION tz; | |
3944 DWORD tzid = GetTimeZoneInformation(&tz); | |
3945 int daylightBias = | |
3946 (tzid == TIME_ZONE_ID_DAYLIGHT) ? tz.DaylightBias : tz.StandardBias; | |
3947 sbuf->st_mtime += (tz.Bias + daylightBias) * 60; | |
3948 } | |
3949 return ret; | |
3950 } | |
3951 | |
3952 | |
3953 #define FT2INT64(ft) \ | |
3954 ((jlong)((jlong)(ft).dwHighDateTime << 32 | (julong)(ft).dwLowDateTime)) | |
3955 | |
3956 | |
3957 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
3958 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
3959 // of a thread. | |
3960 // | |
3961 // current_thread_cpu_time() and thread_cpu_time(Thread*) returns | |
3962 // the fast estimate available on the platform. | |
3963 | |
3964 // current_thread_cpu_time() is not optimized for Windows yet | |
3965 jlong os::current_thread_cpu_time() { | |
3966 // return user + sys since the cost is the same | |
3967 return os::thread_cpu_time(Thread::current(), true /* user+sys */); | |
3968 } | |
3969 | |
3970 jlong os::thread_cpu_time(Thread* thread) { | |
3971 // consistent with what current_thread_cpu_time() returns. | |
3972 return os::thread_cpu_time(thread, true /* user+sys */); | |
3973 } | |
3974 | |
3975 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
3976 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
3977 } | |
3978 | |
3979 jlong os::thread_cpu_time(Thread* thread, bool user_sys_cpu_time) { | |
3980 // This code is copy from clasic VM -> hpi::sysThreadCPUTime | |
3981 // If this function changes, os::is_thread_cpu_time_supported() should too | |
3982 if (os::win32::is_nt()) { | |
3983 FILETIME CreationTime; | |
3984 FILETIME ExitTime; | |
3985 FILETIME KernelTime; | |
3986 FILETIME UserTime; | |
3987 | |
3988 if ( GetThreadTimes(thread->osthread()->thread_handle(), | |
3989 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
3990 return -1; | |
3991 else | |
3992 if (user_sys_cpu_time) { | |
3993 return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100; | |
3994 } else { | |
3995 return FT2INT64(UserTime) * 100; | |
3996 } | |
3997 } else { | |
3998 return (jlong) timeGetTime() * 1000000; | |
3999 } | |
4000 } | |
4001 | |
4002 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
4003 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
4004 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
4005 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
4006 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
4007 } | |
4008 | |
4009 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
4010 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
4011 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
4012 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
4013 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
4014 } | |
4015 | |
4016 bool os::is_thread_cpu_time_supported() { | |
4017 // see os::thread_cpu_time | |
4018 if (os::win32::is_nt()) { | |
4019 FILETIME CreationTime; | |
4020 FILETIME ExitTime; | |
4021 FILETIME KernelTime; | |
4022 FILETIME UserTime; | |
4023 | |
4024 if ( GetThreadTimes(GetCurrentThread(), | |
4025 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
4026 return false; | |
4027 else | |
4028 return true; | |
4029 } else { | |
4030 return false; | |
4031 } | |
4032 } | |
4033 | |
4034 // Windows does't provide a loadavg primitive so this is stubbed out for now. | |
4035 // It does have primitives (PDH API) to get CPU usage and run queue length. | |
4036 // "\\Processor(_Total)\\% Processor Time", "\\System\\Processor Queue Length" | |
4037 // If we wanted to implement loadavg on Windows, we have a few options: | |
4038 // | |
4039 // a) Query CPU usage and run queue length and "fake" an answer by | |
4040 // returning the CPU usage if it's under 100%, and the run queue | |
4041 // length otherwise. It turns out that querying is pretty slow | |
4042 // on Windows, on the order of 200 microseconds on a fast machine. | |
4043 // Note that on the Windows the CPU usage value is the % usage | |
4044 // since the last time the API was called (and the first call | |
4045 // returns 100%), so we'd have to deal with that as well. | |
4046 // | |
4047 // b) Sample the "fake" answer using a sampling thread and store | |
4048 // the answer in a global variable. The call to loadavg would | |
4049 // just return the value of the global, avoiding the slow query. | |
4050 // | |
4051 // c) Sample a better answer using exponential decay to smooth the | |
4052 // value. This is basically the algorithm used by UNIX kernels. | |
4053 // | |
4054 // Note that sampling thread starvation could affect both (b) and (c). | |
4055 int os::loadavg(double loadavg[], int nelem) { | |
4056 return -1; | |
4057 } | |
4058 | |
4059 | |
4060 // DontYieldALot=false by default: dutifully perform all yields as requested by JVM_Yield() | |
4061 bool os::dont_yield() { | |
4062 return DontYieldALot; | |
4063 } | |
4064 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4065 // This method is a slightly reworked copy of JDK's sysOpen |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4066 // from src/windows/hpi/src/sys_api_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4067 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4068 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
|
4069 char pathbuf[MAX_PATH]; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4070 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4071 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4072 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4073 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4074 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4075 os::native_path(strcpy(pathbuf, path)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4076 return ::open(pathbuf, oflag | O_BINARY | O_NOINHERIT, mode); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4077 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
4078 |
0 | 4079 // Is a (classpath) directory empty? |
4080 bool os::dir_is_empty(const char* path) { | |
4081 WIN32_FIND_DATA fd; | |
4082 HANDLE f = FindFirstFile(path, &fd); | |
4083 if (f == INVALID_HANDLE_VALUE) { | |
4084 return true; | |
4085 } | |
4086 FindClose(f); | |
4087 return false; | |
4088 } | |
4089 | |
4090 // create binary file, rewriting existing file if required | |
4091 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
4092 int oflags = _O_CREAT | _O_WRONLY | _O_BINARY; | |
4093 if (!rewrite_existing) { | |
4094 oflags |= _O_EXCL; | |
4095 } | |
4096 return ::open(path, oflags, _S_IREAD | _S_IWRITE); | |
4097 } | |
4098 | |
4099 // return current position of file pointer | |
4100 jlong os::current_file_offset(int fd) { | |
4101 return (jlong)::_lseeki64(fd, (__int64)0L, SEEK_CUR); | |
4102 } | |
4103 | |
4104 // move file pointer to the specified offset | |
4105 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
4106 return (jlong)::_lseeki64(fd, (__int64)offset, SEEK_SET); | |
4107 } | |
4108 | |
4109 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4110 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
|
4111 return (jlong) ::_lseeki64(fd, offset, whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4112 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4113 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4114 // This method is a slightly reworked copy of JDK's sysNativePath |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4115 // from src/windows/hpi/src/path_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4116 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4117 /* Convert a pathname to native format. On win32, this involves forcing all |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4118 separators to be '\\' rather than '/' (both are legal inputs, but Win95 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4119 sometimes rejects '/') and removing redundant separators. The input path is |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4120 assumed to have been converted into the character encoding used by the local |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4121 system. Because this might be a double-byte encoding, care is taken to |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4122 treat double-byte lead characters correctly. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4123 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4124 This procedure modifies the given path in place, as the result is never |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4125 longer than the original. There is no error return; this operation always |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4126 succeeds. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4127 char * os::native_path(char *path) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4128 char *src = path, *dst = path, *end = path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
4129 char *colon = NULL; /* If a drive specifier is found, this will |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4130 point to the colon following the drive |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4131 letter */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4132 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4133 /* Assumption: '/', '\\', ':', and drive letters are never lead bytes */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4134 assert(((!::IsDBCSLeadByte('/')) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4135 && (!::IsDBCSLeadByte('\\')) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4136 && (!::IsDBCSLeadByte(':'))), |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4137 "Illegal lead byte"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4138 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4139 /* Check for leading separators */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4140 #define isfilesep(c) ((c) == '/' || (c) == '\\') |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4141 while (isfilesep(*src)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4142 src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4143 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4144 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4145 if (::isalpha(*src) && !::IsDBCSLeadByte(*src) && src[1] == ':') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4146 /* Remove leading separators if followed by drive specifier. This |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4147 hack is necessary to support file URLs containing drive |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4148 specifiers (e.g., "file://c:/path"). As a side effect, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4149 "/c:/path" can be used as an alternative to "c:/path". */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4150 *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4151 colon = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4152 *dst++ = ':'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4153 src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4154 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4155 src = path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4156 if (isfilesep(src[0]) && isfilesep(src[1])) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4157 /* UNC pathname: Retain first separator; leave src pointed at |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4158 second separator so that further separators will be collapsed |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4159 into the second separator. The result will be a pathname |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4160 beginning with "\\\\" followed (most likely) by a host name. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4161 src = dst = path + 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4162 path[0] = '\\'; /* Force first separator to '\\' */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4163 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4164 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4165 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4166 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4167 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4168 /* Remove redundant separators from remainder of path, forcing all |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4169 separators to be '\\' rather than '/'. Also, single byte space |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4170 characters are removed from the end of the path because those |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4171 are not legal ending characters on this operating system. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4172 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4173 while (*src != '\0') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4174 if (isfilesep(*src)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4175 *dst++ = '\\'; src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4176 while (isfilesep(*src)) src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4177 if (*src == '\0') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4178 /* Check for trailing separator */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4179 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4180 if (colon == dst - 2) break; /* "z:\\" */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4181 if (dst == path + 1) break; /* "\\" */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4182 if (dst == path + 2 && isfilesep(path[0])) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4183 /* "\\\\" is not collapsed to "\\" because "\\\\" marks the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4184 beginning of a UNC pathname. Even though it is not, by |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4185 itself, a valid UNC pathname, we leave it as is in order |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4186 to be consistent with the path canonicalizer as well |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4187 as the win32 APIs, which treat this case as an invalid |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4188 UNC pathname rather than as an alias for the root |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4189 directory of the current drive. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4190 break; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4191 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4192 end = --dst; /* Path does not denote a root directory, so |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4193 remove trailing separator */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4194 break; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4195 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4196 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4197 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4198 if (::IsDBCSLeadByte(*src)) { /* Copy a double-byte character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4199 *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4200 if (*src) *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4201 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4202 } else { /* Copy a single-byte character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4203 char c = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4204 *dst++ = c; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4205 /* Space is not a legal ending character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4206 if (c != ' ') end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4207 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4208 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4209 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4210 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4211 *end = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4212 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4213 /* For "z:", add "." to work around a bug in the C runtime library */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4214 if (colon == dst - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4215 path[2] = '.'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4216 path[3] = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4217 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4218 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4219 #ifdef DEBUG |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4220 jio_fprintf(stderr, "sysNativePath: %s\n", path); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4221 #endif DEBUG |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4222 return path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4223 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4224 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4225 // This code is a copy of JDK's sysSetLength |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4226 // from src/windows/hpi/src/sys_api_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4227 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4228 int os::ftruncate(int fd, jlong length) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4229 HANDLE h = (HANDLE)::_get_osfhandle(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4230 long high = (long)(length >> 32); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4231 DWORD ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4232 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4233 if (h == (HANDLE)(-1)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4234 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4235 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4236 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4237 ret = ::SetFilePointer(h, (long)(length), &high, FILE_BEGIN); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4238 if ((ret == 0xFFFFFFFF) && (::GetLastError() != NO_ERROR)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4239 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4240 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4241 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4242 if (::SetEndOfFile(h) == FALSE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4243 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4244 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4245 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4246 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4247 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4248 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4249 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4250 // This code is a copy of JDK's sysSync |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4251 // from src/windows/hpi/src/sys_api_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4252 // except for the legacy workaround for a bug in Win 98 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4253 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4254 int os::fsync(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4255 HANDLE handle = (HANDLE)::_get_osfhandle(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4256 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4257 if ( (!::FlushFileBuffers(handle)) && |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4258 (GetLastError() != ERROR_ACCESS_DENIED) ) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4259 /* from winerror.h */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4260 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4261 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4262 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4263 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4264 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4265 static int nonSeekAvailable(int, long *); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4266 static int stdinAvailable(int, long *); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4267 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4268 #define S_ISCHR(mode) (((mode) & _S_IFCHR) == _S_IFCHR) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4269 #define S_ISFIFO(mode) (((mode) & _S_IFIFO) == _S_IFIFO) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4270 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4271 // This code is a copy of JDK's sysAvailable |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4272 // from src/windows/hpi/src/sys_api_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4273 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4274 int os::available(int fd, jlong *bytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4275 jlong cur, end; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4276 struct _stati64 stbuf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4277 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4278 if (::_fstati64(fd, &stbuf64) >= 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4279 int mode = stbuf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4280 if (S_ISCHR(mode) || S_ISFIFO(mode)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4281 int ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4282 long lpbytes; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4283 if (fd == 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4284 ret = stdinAvailable(fd, &lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4285 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4286 ret = nonSeekAvailable(fd, &lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4287 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4288 (*bytes) = (jlong)(lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4289 return ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4290 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4291 if ((cur = ::_lseeki64(fd, 0L, SEEK_CUR)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4292 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4293 } else if ((end = ::_lseeki64(fd, 0L, SEEK_END)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4294 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4295 } else if (::_lseeki64(fd, cur, SEEK_SET) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4296 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4297 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4298 *bytes = end - cur; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4299 return TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4300 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4301 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4302 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4303 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4304 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4305 // This code is a copy of JDK's nonSeekAvailable |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4306 // from src/windows/hpi/src/sys_api_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4307 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4308 static int nonSeekAvailable(int fd, long *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4309 /* This is used for available on non-seekable devices |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4310 * (like both named and anonymous pipes, such as pipes |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4311 * connected to an exec'd process). |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4312 * Standard Input is a special case. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4313 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4314 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4315 HANDLE han; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4316 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4317 if ((han = (HANDLE) ::_get_osfhandle(fd)) == (HANDLE)(-1)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4318 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4319 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4320 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4321 if (! ::PeekNamedPipe(han, NULL, 0, NULL, (LPDWORD)pbytes, NULL)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4322 /* PeekNamedPipe fails when at EOF. In that case we |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4323 * simply make *pbytes = 0 which is consistent with the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4324 * behavior we get on Solaris when an fd is at EOF. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4325 * The only alternative is to raise an Exception, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4326 * which isn't really warranted. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4327 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4328 if (::GetLastError() != ERROR_BROKEN_PIPE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4329 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4330 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4331 *pbytes = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4332 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4333 return TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4334 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4335 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4336 #define MAX_INPUT_EVENTS 2000 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4337 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4338 // This code is a copy of JDK's stdinAvailable |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4339 // from src/windows/hpi/src/sys_api_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4340 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4341 static int stdinAvailable(int fd, long *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4342 HANDLE han; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4343 DWORD numEventsRead = 0; /* Number of events read from buffer */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4344 DWORD numEvents = 0; /* Number of events in buffer */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4345 DWORD i = 0; /* Loop index */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4346 DWORD curLength = 0; /* Position marker */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4347 DWORD actualLength = 0; /* Number of bytes readable */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4348 BOOL error = FALSE; /* Error holder */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4349 INPUT_RECORD *lpBuffer; /* Pointer to records of input events */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4350 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4351 if ((han = ::GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4352 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4353 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4354 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4355 /* Construct an array of input records in the console buffer */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4356 error = ::GetNumberOfConsoleInputEvents(han, &numEvents); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4357 if (error == 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4358 return nonSeekAvailable(fd, pbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4359 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4360 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4361 /* lpBuffer must fit into 64K or else PeekConsoleInput fails */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4362 if (numEvents > MAX_INPUT_EVENTS) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4363 numEvents = MAX_INPUT_EVENTS; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4364 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4365 |
6197 | 4366 lpBuffer = (INPUT_RECORD *)os::malloc(numEvents * sizeof(INPUT_RECORD), mtInternal); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4367 if (lpBuffer == NULL) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4368 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4369 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4370 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4371 error = ::PeekConsoleInput(han, lpBuffer, numEvents, &numEventsRead); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4372 if (error == 0) { |
6197 | 4373 os::free(lpBuffer, mtInternal); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4374 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4375 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4376 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4377 /* Examine input records for the number of bytes available */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4378 for(i=0; i<numEvents; i++) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4379 if (lpBuffer[i].EventType == KEY_EVENT) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4380 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4381 KEY_EVENT_RECORD *keyRecord = (KEY_EVENT_RECORD *) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4382 &(lpBuffer[i].Event); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4383 if (keyRecord->bKeyDown == TRUE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4384 CHAR *keyPressed = (CHAR *) &(keyRecord->uChar); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4385 curLength++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4386 if (*keyPressed == '\r') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4387 actualLength = curLength; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4388 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4389 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4390 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4391 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4392 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4393 if(lpBuffer != NULL) { |
6197 | 4394 os::free(lpBuffer, mtInternal); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4395 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4396 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4397 *pbytes = (long) actualLength; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4398 return TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4399 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4400 |
0 | 4401 // Map a block of memory. |
6197 | 4402 char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, |
0 | 4403 char *addr, size_t bytes, bool read_only, |
4404 bool allow_exec) { | |
4405 HANDLE hFile; | |
4406 char* base; | |
4407 | |
4408 hFile = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, | |
4409 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); | |
4410 if (hFile == NULL) { | |
4411 if (PrintMiscellaneous && Verbose) { | |
4412 DWORD err = GetLastError(); | |
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diff
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|
4413 tty->print_cr("CreateFile() failed: GetLastError->%ld.", err); |
0 | 4414 } |
4415 return NULL; | |
4416 } | |
4417 | |
4418 if (allow_exec) { | |
4419 // CreateFileMapping/MapViewOfFileEx can't map executable memory | |
4420 // unless it comes from a PE image (which the shared archive is not.) | |
4421 // Even VirtualProtect refuses to give execute access to mapped memory | |
4422 // that was not previously executable. | |
4423 // | |
4424 // Instead, stick the executable region in anonymous memory. Yuck. | |
4425 // Penalty is that ~4 pages will not be shareable - in the future | |
4426 // we might consider DLLizing the shared archive with a proper PE | |
4427 // header so that mapping executable + sharing is possible. | |
4428 | |
4429 base = (char*) VirtualAlloc(addr, bytes, MEM_COMMIT | MEM_RESERVE, | |
4430 PAGE_READWRITE); | |
4431 if (base == NULL) { | |
4432 if (PrintMiscellaneous && Verbose) { | |
4433 DWORD err = GetLastError(); | |
4434 tty->print_cr("VirtualAlloc() failed: GetLastError->%ld.", err); | |
4435 } | |
4436 CloseHandle(hFile); | |
4437 return NULL; | |
4438 } | |
4439 | |
4440 DWORD bytes_read; | |
4441 OVERLAPPED overlapped; | |
4442 overlapped.Offset = (DWORD)file_offset; | |
4443 overlapped.OffsetHigh = 0; | |
4444 overlapped.hEvent = NULL; | |
4445 // ReadFile guarantees that if the return value is true, the requested | |
4446 // number of bytes were read before returning. | |
4447 bool res = ReadFile(hFile, base, (DWORD)bytes, &bytes_read, &overlapped) != 0; | |
4448 if (!res) { | |
4449 if (PrintMiscellaneous && Verbose) { | |
4450 DWORD err = GetLastError(); | |
4451 tty->print_cr("ReadFile() failed: GetLastError->%ld.", err); | |
4452 } | |
4453 release_memory(base, bytes); | |
4454 CloseHandle(hFile); | |
4455 return NULL; | |
4456 } | |
4457 } else { | |
4458 HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, | |
4459 NULL /*file_name*/); | |
4460 if (hMap == NULL) { | |
4461 if (PrintMiscellaneous && Verbose) { | |
4462 DWORD err = GetLastError(); | |
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|
4463 tty->print_cr("CreateFileMapping() failed: GetLastError->%ld.", err); |
0 | 4464 } |
4465 CloseHandle(hFile); | |
4466 return NULL; | |
4467 } | |
4468 | |
4469 DWORD access = read_only ? FILE_MAP_READ : FILE_MAP_COPY; | |
4470 base = (char*)MapViewOfFileEx(hMap, access, 0, (DWORD)file_offset, | |
4471 (DWORD)bytes, addr); | |
4472 if (base == NULL) { | |
4473 if (PrintMiscellaneous && Verbose) { | |
4474 DWORD err = GetLastError(); | |
4475 tty->print_cr("MapViewOfFileEx() failed: GetLastError->%ld.", err); | |
4476 } | |
4477 CloseHandle(hMap); | |
4478 CloseHandle(hFile); | |
4479 return NULL; | |
4480 } | |
4481 | |
4482 if (CloseHandle(hMap) == 0) { | |
4483 if (PrintMiscellaneous && Verbose) { | |
4484 DWORD err = GetLastError(); | |
4485 tty->print_cr("CloseHandle(hMap) failed: GetLastError->%ld.", err); | |
4486 } | |
4487 CloseHandle(hFile); | |
4488 return base; | |
4489 } | |
4490 } | |
4491 | |
4492 if (allow_exec) { | |
4493 DWORD old_protect; | |
4494 DWORD exec_access = read_only ? PAGE_EXECUTE_READ : PAGE_EXECUTE_READWRITE; | |
4495 bool res = VirtualProtect(base, bytes, exec_access, &old_protect) != 0; | |
4496 | |
4497 if (!res) { | |
4498 if (PrintMiscellaneous && Verbose) { | |
4499 DWORD err = GetLastError(); | |
4500 tty->print_cr("VirtualProtect() failed: GetLastError->%ld.", err); | |
4501 } | |
4502 // Don't consider this a hard error, on IA32 even if the | |
4503 // VirtualProtect fails, we should still be able to execute | |
4504 CloseHandle(hFile); | |
4505 return base; | |
4506 } | |
4507 } | |
4508 | |
4509 if (CloseHandle(hFile) == 0) { | |
4510 if (PrintMiscellaneous && Verbose) { | |
4511 DWORD err = GetLastError(); | |
4512 tty->print_cr("CloseHandle(hFile) failed: GetLastError->%ld.", err); | |
4513 } | |
4514 return base; | |
4515 } | |
4516 | |
4517 return base; | |
4518 } | |
4519 | |
4520 | |
4521 // Remap a block of memory. | |
6197 | 4522 char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, |
0 | 4523 char *addr, size_t bytes, bool read_only, |
4524 bool allow_exec) { | |
4525 // This OS does not allow existing memory maps to be remapped so we | |
4526 // have to unmap the memory before we remap it. | |
4527 if (!os::unmap_memory(addr, bytes)) { | |
4528 return NULL; | |
4529 } | |
4530 | |
4531 // There is a very small theoretical window between the unmap_memory() | |
4532 // call above and the map_memory() call below where a thread in native | |
4533 // code may be able to access an address that is no longer mapped. | |
4534 | |
6197 | 4535 return os::map_memory(fd, file_name, file_offset, addr, bytes, |
4536 read_only, allow_exec); | |
0 | 4537 } |
4538 | |
4539 | |
4540 // Unmap a block of memory. | |
4541 // Returns true=success, otherwise false. | |
4542 | |
6197 | 4543 bool os::pd_unmap_memory(char* addr, size_t bytes) { |
0 | 4544 BOOL result = UnmapViewOfFile(addr); |
4545 if (result == 0) { | |
4546 if (PrintMiscellaneous && Verbose) { | |
4547 DWORD err = GetLastError(); | |
4548 tty->print_cr("UnmapViewOfFile() failed: GetLastError->%ld.", err); | |
4549 } | |
4550 return false; | |
4551 } | |
4552 return true; | |
4553 } | |
4554 | |
4555 void os::pause() { | |
4556 char filename[MAX_PATH]; | |
4557 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
4558 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
4559 } else { | |
4560 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
4561 } | |
4562 | |
4563 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
4564 if (fd != -1) { | |
4565 struct stat buf; | |
1980
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diff
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|
4566 ::close(fd); |
0 | 4567 while (::stat(filename, &buf) == 0) { |
4568 Sleep(100); | |
4569 } | |
4570 } else { | |
4571 jio_fprintf(stderr, | |
4572 "Could not open pause file '%s', continuing immediately.\n", filename); | |
4573 } | |
4574 } | |
4575 | |
4576 // An Event wraps a win32 "CreateEvent" kernel handle. | |
4577 // | |
4578 // We have a number of choices regarding "CreateEvent" win32 handle leakage: | |
4579 // | |
4580 // 1: When a thread dies return the Event to the EventFreeList, clear the ParkHandle | |
4581 // field, and call CloseHandle() on the win32 event handle. Unpark() would | |
4582 // need to be modified to tolerate finding a NULL (invalid) win32 event handle. | |
4583 // In addition, an unpark() operation might fetch the handle field, but the | |
4584 // event could recycle between the fetch and the SetEvent() operation. | |
4585 // SetEvent() would either fail because the handle was invalid, or inadvertently work, | |
4586 // as the win32 handle value had been recycled. In an ideal world calling SetEvent() | |
4587 // on an stale but recycled handle would be harmless, but in practice this might | |
4588 // confuse other non-Sun code, so it's not a viable approach. | |
4589 // | |
4590 // 2: Once a win32 event handle is associated with an Event, it remains associated | |
4591 // with the Event. The event handle is never closed. This could be construed | |
4592 // as handle leakage, but only up to the maximum # of threads that have been extant | |
4593 // at any one time. This shouldn't be an issue, as windows platforms typically | |
4594 // permit a process to have hundreds of thousands of open handles. | |
4595 // | |
4596 // 3: Same as (1), but periodically, at stop-the-world time, rundown the EventFreeList | |
4597 // and release unused handles. | |
4598 // | |
4599 // 4: Add a CRITICAL_SECTION to the Event to protect LD+SetEvent from LD;ST(null);CloseHandle. | |
4600 // It's not clear, however, that we wouldn't be trading one type of leak for another. | |
4601 // | |
4602 // 5. Use an RCU-like mechanism (Read-Copy Update). | |
4603 // Or perhaps something similar to Maged Michael's "Hazard pointers". | |
4604 // | |
4605 // We use (2). | |
4606 // | |
4607 // TODO-FIXME: | |
4608 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the objectmonitor implementation. | |
4609 // 2. Consider wrapping the WaitForSingleObject(Ex) calls in SEH try/finally blocks | |
4610 // to recover from (or at least detect) the dreaded Windows 841176 bug. | |
4611 // 3. Collapse the interrupt_event, the JSR166 parker event, and the objectmonitor ParkEvent | |
4612 // into a single win32 CreateEvent() handle. | |
4613 // | |
4614 // _Event transitions in park() | |
4615 // -1 => -1 : illegal | |
4616 // 1 => 0 : pass - return immediately | |
4617 // 0 => -1 : block | |
4618 // | |
4619 // _Event serves as a restricted-range semaphore : | |
4620 // -1 : thread is blocked | |
4621 // 0 : neutral - thread is running or ready | |
4622 // 1 : signaled - thread is running or ready | |
4623 // | |
4624 // Another possible encoding of _Event would be | |
4625 // with explicit "PARKED" and "SIGNALED" bits. | |
4626 | |
4627 int os::PlatformEvent::park (jlong Millis) { | |
4628 guarantee (_ParkHandle != NULL , "Invariant") ; | |
4629 guarantee (Millis > 0 , "Invariant") ; | |
4630 int v ; | |
4631 | |
4632 // CONSIDER: defer assigning a CreateEvent() handle to the Event until | |
4633 // the initial park() operation. | |
4634 | |
4635 for (;;) { | |
4636 v = _Event ; | |
4637 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
4638 } | |
4639 guarantee ((v == 0) || (v == 1), "invariant") ; | |
4640 if (v != 0) return OS_OK ; | |
4641 | |
4642 // Do this the hard way by blocking ... | |
4643 // TODO: consider a brief spin here, gated on the success of recent | |
4644 // spin attempts by this thread. | |
4645 // | |
4646 // We decompose long timeouts into series of shorter timed waits. | |
4647 // Evidently large timo values passed in WaitForSingleObject() are problematic on some | |
4648 // versions of Windows. See EventWait() for details. This may be superstition. Or not. | |
4649 // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time | |
4650 // with os::javaTimeNanos(). Furthermore, we assume that spurious returns from | |
4651 // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend | |
4652 // to happen early in the wait interval. Specifically, after a spurious wakeup (rv == | |
4653 // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate | |
4654 // for the already waited time. This policy does not admit any new outcomes. | |
4655 // In the future, however, we might want to track the accumulated wait time and | |
4656 // adjust Millis accordingly if we encounter a spurious wakeup. | |
4657 | |
4658 const int MAXTIMEOUT = 0x10000000 ; | |
4659 DWORD rv = WAIT_TIMEOUT ; | |
4660 while (_Event < 0 && Millis > 0) { | |
4661 DWORD prd = Millis ; // set prd = MAX (Millis, MAXTIMEOUT) | |
4662 if (Millis > MAXTIMEOUT) { | |
4663 prd = MAXTIMEOUT ; | |
4664 } | |
4665 rv = ::WaitForSingleObject (_ParkHandle, prd) ; | |
4666 assert (rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed") ; | |
4667 if (rv == WAIT_TIMEOUT) { | |
4668 Millis -= prd ; | |
4669 } | |
4670 } | |
4671 v = _Event ; | |
4672 _Event = 0 ; | |
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4673 // see comment at end of os::PlatformEvent::park() below: |
0 | 4674 OrderAccess::fence() ; |
4675 // If we encounter a nearly simultanous timeout expiry and unpark() | |
4676 // we return OS_OK indicating we awoke via unpark(). | |
4677 // Implementor's license -- returning OS_TIMEOUT would be equally valid, however. | |
4678 return (v >= 0) ? OS_OK : OS_TIMEOUT ; | |
4679 } | |
4680 | |
4681 void os::PlatformEvent::park () { | |
4682 guarantee (_ParkHandle != NULL, "Invariant") ; | |
4683 // Invariant: Only the thread associated with the Event/PlatformEvent | |
4684 // may call park(). | |
4685 int v ; | |
4686 for (;;) { | |
4687 v = _Event ; | |
4688 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
4689 } | |
4690 guarantee ((v == 0) || (v == 1), "invariant") ; | |
4691 if (v != 0) return ; | |
4692 | |
4693 // Do this the hard way by blocking ... | |
4694 // TODO: consider a brief spin here, gated on the success of recent | |
4695 // spin attempts by this thread. | |
4696 while (_Event < 0) { | |
4697 DWORD rv = ::WaitForSingleObject (_ParkHandle, INFINITE) ; | |
4698 assert (rv == WAIT_OBJECT_0, "WaitForSingleObject failed") ; | |
4699 } | |
4700 | |
4701 // Usually we'll find _Event == 0 at this point, but as | |
4702 // an optional optimization we clear it, just in case can | |
4703 // multiple unpark() operations drove _Event up to 1. | |
4704 _Event = 0 ; | |
4705 OrderAccess::fence() ; | |
4706 guarantee (_Event >= 0, "invariant") ; | |
4707 } | |
4708 | |
4709 void os::PlatformEvent::unpark() { | |
4710 guarantee (_ParkHandle != NULL, "Invariant") ; | |
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4711 |
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|
4712 // Transitions for _Event: |
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|
4713 // 0 :=> 1 |
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|
4714 // 1 :=> 1 |
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|
4715 // -1 :=> either 0 or 1; must signal target thread |
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|
4716 // That is, we can safely transition _Event from -1 to either |
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4717 // 0 or 1. Forcing 1 is slightly more efficient for back-to-back |
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|
4718 // unpark() calls. |
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|
4719 // See also: "Semaphores in Plan 9" by Mullender & Cox |
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|
4720 // |
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|
4721 // Note: Forcing a transition from "-1" to "1" on an unpark() means |
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diff
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|
4722 // that it will take two back-to-back park() calls for the owning |
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diff
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|
4723 // thread to block. This has the benefit of forcing a spurious return |
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diff
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|
4724 // from the first park() call after an unpark() call which will help |
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diff
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|
4725 // shake out uses of park() and unpark() without condition variables. |
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diff
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|
4726 |
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|
4727 if (Atomic::xchg(1, &_Event) >= 0) return; |
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4728 |
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|
4729 ::SetEvent(_ParkHandle); |
0 | 4730 } |
4731 | |
4732 | |
4733 // JSR166 | |
4734 // ------------------------------------------------------- | |
4735 | |
4736 /* | |
4737 * The Windows implementation of Park is very straightforward: Basic | |
4738 * operations on Win32 Events turn out to have the right semantics to | |
4739 * use them directly. We opportunistically resuse the event inherited | |
4740 * from Monitor. | |
4741 */ | |
4742 | |
4743 | |
4744 void Parker::park(bool isAbsolute, jlong time) { | |
4745 guarantee (_ParkEvent != NULL, "invariant") ; | |
4746 // First, demultiplex/decode time arguments | |
4747 if (time < 0) { // don't wait | |
4748 return; | |
4749 } | |
1865
1c352af0135d
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1681
diff
changeset
|
4750 else if (time == 0 && !isAbsolute) { |
0 | 4751 time = INFINITE; |
4752 } | |
4753 else if (isAbsolute) { | |
4754 time -= os::javaTimeMillis(); // convert to relative time | |
4755 if (time <= 0) // already elapsed | |
4756 return; | |
4757 } | |
4758 else { // relative | |
4759 time /= 1000000; // Must coarsen from nanos to millis | |
4760 if (time == 0) // Wait for the minimal time unit if zero | |
4761 time = 1; | |
4762 } | |
4763 | |
4764 JavaThread* thread = (JavaThread*)(Thread::current()); | |
4765 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
4766 JavaThread *jt = (JavaThread *)thread; | |
4767 | |
4768 // Don't wait if interrupted or already triggered | |
4769 if (Thread::is_interrupted(thread, false) || | |
4770 WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) { | |
4771 ResetEvent(_ParkEvent); | |
4772 return; | |
4773 } | |
4774 else { | |
4775 ThreadBlockInVM tbivm(jt); | |
4776 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
4777 jt->set_suspend_equivalent(); | |
4778 | |
4779 WaitForSingleObject(_ParkEvent, time); | |
4780 ResetEvent(_ParkEvent); | |
4781 | |
4782 // If externally suspended while waiting, re-suspend | |
4783 if (jt->handle_special_suspend_equivalent_condition()) { | |
4784 jt->java_suspend_self(); | |
4785 } | |
4786 } | |
4787 } | |
4788 | |
4789 void Parker::unpark() { | |
4790 guarantee (_ParkEvent != NULL, "invariant") ; | |
4791 SetEvent(_ParkEvent); | |
4792 } | |
4793 | |
4794 // Run the specified command in a separate process. Return its exit value, | |
4795 // or -1 on failure (e.g. can't create a new process). | |
4796 int os::fork_and_exec(char* cmd) { | |
4797 STARTUPINFO si; | |
4798 PROCESS_INFORMATION pi; | |
4799 | |
4800 memset(&si, 0, sizeof(si)); | |
4801 si.cb = sizeof(si); | |
4802 memset(&pi, 0, sizeof(pi)); | |
4803 BOOL rslt = CreateProcess(NULL, // executable name - use command line | |
4804 cmd, // command line | |
4805 NULL, // process security attribute | |
4806 NULL, // thread security attribute | |
4807 TRUE, // inherits system handles | |
4808 0, // no creation flags | |
4809 NULL, // use parent's environment block | |
4810 NULL, // use parent's starting directory | |
4811 &si, // (in) startup information | |
4812 &pi); // (out) process information | |
4813 | |
4814 if (rslt) { | |
4815 // Wait until child process exits. | |
4816 WaitForSingleObject(pi.hProcess, INFINITE); | |
4817 | |
4818 DWORD exit_code; | |
4819 GetExitCodeProcess(pi.hProcess, &exit_code); | |
4820 | |
4821 // Close process and thread handles. | |
4822 CloseHandle(pi.hProcess); | |
4823 CloseHandle(pi.hThread); | |
4824 | |
4825 return (int)exit_code; | |
4826 } else { | |
4827 return -1; | |
4828 } | |
4829 } | |
4830 | |
4831 //-------------------------------------------------------------------------------------------------- | |
4832 // Non-product code | |
4833 | |
4834 static int mallocDebugIntervalCounter = 0; | |
4835 static int mallocDebugCounter = 0; | |
4836 bool os::check_heap(bool force) { | |
4837 if (++mallocDebugCounter < MallocVerifyStart && !force) return true; | |
4838 if (++mallocDebugIntervalCounter >= MallocVerifyInterval || force) { | |
4839 // Note: HeapValidate executes two hardware breakpoints when it finds something | |
4840 // wrong; at these points, eax contains the address of the offending block (I think). | |
4841 // To get to the exlicit error message(s) below, just continue twice. | |
4842 HANDLE heap = GetProcessHeap(); | |
4843 { HeapLock(heap); | |
4844 PROCESS_HEAP_ENTRY phe; | |
4845 phe.lpData = NULL; | |
4846 while (HeapWalk(heap, &phe) != 0) { | |
4847 if ((phe.wFlags & PROCESS_HEAP_ENTRY_BUSY) && | |
4848 !HeapValidate(heap, 0, phe.lpData)) { | |
4849 tty->print_cr("C heap has been corrupted (time: %d allocations)", mallocDebugCounter); | |
4850 tty->print_cr("corrupted block near address %#x, length %d", phe.lpData, phe.cbData); | |
4851 fatal("corrupted C heap"); | |
4852 } | |
4853 } | |
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b16494a69d3d
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diff
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|
4854 DWORD err = GetLastError(); |
0 | 4855 if (err != ERROR_NO_MORE_ITEMS && err != ERROR_CALL_NOT_IMPLEMENTED) { |
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diff
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|
4856 fatal(err_msg("heap walk aborted with error %d", err)); |
0 | 4857 } |
4858 HeapUnlock(heap); | |
4859 } | |
4860 mallocDebugIntervalCounter = 0; | |
4861 } | |
4862 return true; | |
4863 } | |
4864 | |
4865 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4866 bool os::find(address addr, outputStream* st) { |
0 | 4867 // Nothing yet |
4868 return false; | |
4869 } | |
4870 | |
4871 LONG WINAPI os::win32::serialize_fault_filter(struct _EXCEPTION_POINTERS* e) { | |
4872 DWORD exception_code = e->ExceptionRecord->ExceptionCode; | |
4873 | |
4874 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
4875 JavaThread* thread = (JavaThread*)ThreadLocalStorage::get_thread_slow(); | |
4876 PEXCEPTION_RECORD exceptionRecord = e->ExceptionRecord; | |
4877 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
4878 | |
4879 if (os::is_memory_serialize_page(thread, addr)) | |
4880 return EXCEPTION_CONTINUE_EXECUTION; | |
4881 } | |
4882 | |
4883 return EXCEPTION_CONTINUE_SEARCH; | |
4884 } | |
4885 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4886 // We don't build a headless jre for Windows |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4887 bool os::is_headless_jre() { return false; } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4888 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4889 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4890 typedef CRITICAL_SECTION mutex_t; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4891 #define mutexInit(m) InitializeCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4892 #define mutexDestroy(m) DeleteCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4893 #define mutexLock(m) EnterCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4894 #define mutexUnlock(m) LeaveCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4895 |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4896 static bool sock_initialized = FALSE; |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4897 static mutex_t sockFnTableMutex; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4898 |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4899 static void initSock() { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4900 WSADATA wsadata; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4901 |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4902 if (!os::WinSock2Dll::WinSock2Available()) { |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4903 jio_fprintf(stderr, "Could not load Winsock 2 (error: %d)\n", |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4904 ::GetLastError()); |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4905 return; |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4906 } |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4907 if (sock_initialized == TRUE) return; |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4908 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4909 ::mutexInit(&sockFnTableMutex); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4910 ::mutexLock(&sockFnTableMutex); |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4911 if (os::WinSock2Dll::WSAStartup(MAKEWORD(1,1), &wsadata) != 0) { |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4912 jio_fprintf(stderr, "Could not initialize Winsock\n"); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4913 } |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4914 sock_initialized = TRUE; |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4915 ::mutexUnlock(&sockFnTableMutex); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4916 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4917 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4918 struct hostent* os::get_host_by_name(char* name) { |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4919 if (!sock_initialized) { |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4920 initSock(); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4921 } |
3833
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4922 if (!os::WinSock2Dll::WinSock2Available()) { |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4923 return NULL; |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4924 } |
b1cbb0907b36
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
3800
diff
changeset
|
4925 return (struct hostent*)os::WinSock2Dll::gethostbyname(name); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4926 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4927 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4928 int os::socket_close(int fd) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4929 return ::closesocket(fd); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4930 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4931 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4932 int os::socket_available(int fd, jint *pbytes) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4933 int ret = ::ioctlsocket(fd, FIONREAD, (u_long*)pbytes); |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4934 return (ret < 0) ? 0 : 1; |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4935 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4936 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4937 int os::socket(int domain, int type, int protocol) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4938 return ::socket(domain, type, protocol); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4939 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4940 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4941 int os::listen(int fd, int count) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4942 return ::listen(fd, count); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4943 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4944 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4945 int os::connect(int fd, struct sockaddr* him, socklen_t len) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4946 return ::connect(fd, him, len); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4947 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4948 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4949 int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4950 return ::accept(fd, him, len); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4951 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4952 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4953 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:
4006
diff
changeset
|
4954 struct sockaddr* to, socklen_t tolen) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4955 |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4956 return ::sendto(fd, buf, (int)len, flags, to, tolen); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4957 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4958 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4959 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:
4006
diff
changeset
|
4960 sockaddr* from, socklen_t* fromlen) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4961 |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4962 return ::recvfrom(fd, buf, (int)nBytes, flags, from, fromlen); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4963 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4964 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4965 int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4966 return ::recv(fd, buf, (int)nBytes, flags); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4967 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4968 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4969 int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4970 return ::send(fd, buf, (int)nBytes, flags); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4971 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4972 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4973 int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4974 return ::send(fd, buf, (int)nBytes, flags); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4975 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4976 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4977 int os::timeout(int fd, long timeout) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4978 fd_set tbl; |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4979 struct timeval t; |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4980 |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4981 t.tv_sec = timeout / 1000; |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4982 t.tv_usec = (timeout % 1000) * 1000; |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4983 |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4984 tbl.fd_count = 1; |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4985 tbl.fd_array[0] = fd; |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4986 |
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4987 return ::select(1, &tbl, 0, 0, &t); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4988 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4989 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4990 int os::get_host_name(char* name, int namelen) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4991 return ::gethostname(name, namelen); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4992 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4993 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4994 int os::socket_shutdown(int fd, int howto) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4995 return ::shutdown(fd, howto); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4996 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4997 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
4998 int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
4999 return ::bind(fd, him, len); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5000 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5001 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
5002 int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { |
6044
ec15e8f6e4f1
7157695: Add windows implementation of socket interface
twisti
parents:
5903
diff
changeset
|
5003 return ::getsockname(fd, him, len); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5004 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
5005 |
828eafbd85cc
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|
5006 int os::get_sock_opt(int fd, int level, int optname, |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
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|
5007 char* optval, socklen_t* optlen) { |
6044
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|
5008 return ::getsockopt(fd, level, optname, optval, optlen); |
1980
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|
5009 } |
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|
5010 |
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|
5011 int os::set_sock_opt(int fd, int level, int optname, |
4717
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|
5012 const char* optval, socklen_t optlen) { |
6044
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|
5013 return ::setsockopt(fd, level, optname, optval, optlen); |
1980
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|
5014 } |
3833
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|
5015 |
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|
5016 |
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5017 // Kernel32 API |
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5018 typedef SIZE_T (WINAPI* GetLargePageMinimum_Fn)(void); |
3885 | 5019 typedef LPVOID (WINAPI *VirtualAllocExNuma_Fn) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD); |
5020 typedef BOOL (WINAPI *GetNumaHighestNodeNumber_Fn) (PULONG); | |
5021 typedef BOOL (WINAPI *GetNumaNodeProcessorMask_Fn) (UCHAR, PULONGLONG); | |
6197 | 5022 typedef USHORT (WINAPI* RtlCaptureStackBackTrace_Fn)(ULONG, ULONG, PVOID*, PULONG); |
3885 | 5023 |
3833
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5024 GetLargePageMinimum_Fn os::Kernel32Dll::_GetLargePageMinimum = NULL; |
3885 | 5025 VirtualAllocExNuma_Fn os::Kernel32Dll::_VirtualAllocExNuma = NULL; |
5026 GetNumaHighestNodeNumber_Fn os::Kernel32Dll::_GetNumaHighestNodeNumber = NULL; | |
5027 GetNumaNodeProcessorMask_Fn os::Kernel32Dll::_GetNumaNodeProcessorMask = NULL; | |
6197 | 5028 RtlCaptureStackBackTrace_Fn os::Kernel32Dll::_RtlCaptureStackBackTrace = NULL; |
5029 | |
5030 | |
3833
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5031 BOOL os::Kernel32Dll::initialized = FALSE; |
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5032 SIZE_T os::Kernel32Dll::GetLargePageMinimum() { |
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5033 assert(initialized && _GetLargePageMinimum != NULL, |
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5034 "GetLargePageMinimumAvailable() not yet called"); |
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5035 return _GetLargePageMinimum(); |
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5036 } |
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5037 |
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5038 BOOL os::Kernel32Dll::GetLargePageMinimumAvailable() { |
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5039 if (!initialized) { |
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5040 initialize(); |
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5041 } |
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5042 return _GetLargePageMinimum != NULL; |
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5043 } |
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5044 |
3885 | 5045 BOOL os::Kernel32Dll::NumaCallsAvailable() { |
5046 if (!initialized) { | |
5047 initialize(); | |
5048 } | |
5049 return _VirtualAllocExNuma != NULL; | |
5050 } | |
5051 | |
5052 LPVOID os::Kernel32Dll::VirtualAllocExNuma(HANDLE hProc, LPVOID addr, SIZE_T bytes, DWORD flags, DWORD prot, DWORD node) { | |
5053 assert(initialized && _VirtualAllocExNuma != NULL, | |
5054 "NUMACallsAvailable() not yet called"); | |
5055 | |
5056 return _VirtualAllocExNuma(hProc, addr, bytes, flags, prot, node); | |
5057 } | |
5058 | |
5059 BOOL os::Kernel32Dll::GetNumaHighestNodeNumber(PULONG ptr_highest_node_number) { | |
5060 assert(initialized && _GetNumaHighestNodeNumber != NULL, | |
5061 "NUMACallsAvailable() not yet called"); | |
5062 | |
5063 return _GetNumaHighestNodeNumber(ptr_highest_node_number); | |
5064 } | |
5065 | |
5066 BOOL os::Kernel32Dll::GetNumaNodeProcessorMask(UCHAR node, PULONGLONG proc_mask) { | |
5067 assert(initialized && _GetNumaNodeProcessorMask != NULL, | |
5068 "NUMACallsAvailable() not yet called"); | |
5069 | |
5070 return _GetNumaNodeProcessorMask(node, proc_mask); | |
5071 } | |
5072 | |
6197 | 5073 USHORT os::Kernel32Dll::RtlCaptureStackBackTrace(ULONG FrameToSkip, |
5074 ULONG FrameToCapture, PVOID* BackTrace, PULONG BackTraceHash) { | |
5075 if (!initialized) { | |
5076 initialize(); | |
5077 } | |
5078 | |
5079 if (_RtlCaptureStackBackTrace != NULL) { | |
5080 return _RtlCaptureStackBackTrace(FrameToSkip, FrameToCapture, | |
5081 BackTrace, BackTraceHash); | |
5082 } else { | |
5083 return 0; | |
5084 } | |
5085 } | |
3885 | 5086 |
5087 void os::Kernel32Dll::initializeCommon() { | |
5088 if (!initialized) { | |
5089 HMODULE handle = ::GetModuleHandle("Kernel32.dll"); | |
5090 assert(handle != NULL, "Just check"); | |
5091 _GetLargePageMinimum = (GetLargePageMinimum_Fn)::GetProcAddress(handle, "GetLargePageMinimum"); | |
5092 _VirtualAllocExNuma = (VirtualAllocExNuma_Fn)::GetProcAddress(handle, "VirtualAllocExNuma"); | |
5093 _GetNumaHighestNodeNumber = (GetNumaHighestNodeNumber_Fn)::GetProcAddress(handle, "GetNumaHighestNodeNumber"); | |
5094 _GetNumaNodeProcessorMask = (GetNumaNodeProcessorMask_Fn)::GetProcAddress(handle, "GetNumaNodeProcessorMask"); | |
6197 | 5095 _RtlCaptureStackBackTrace = (RtlCaptureStackBackTrace_Fn)::GetProcAddress(handle, "RtlCaptureStackBackTrace"); |
3885 | 5096 initialized = TRUE; |
5097 } | |
5098 } | |
5099 | |
5100 | |
3833
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5101 |
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|
5102 #ifndef JDK6_OR_EARLIER |
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5103 |
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|
5104 void os::Kernel32Dll::initialize() { |
3885 | 5105 initializeCommon(); |
3833
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5106 } |
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|
5107 |
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|
5108 |
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|
5109 // Kernel32 API |
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|
5110 inline BOOL os::Kernel32Dll::SwitchToThread() { |
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|
5111 return ::SwitchToThread(); |
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|
5112 } |
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|
5113 |
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|
5114 inline BOOL os::Kernel32Dll::SwitchToThreadAvailable() { |
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|
5115 return true; |
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|
5116 } |
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|
5117 |
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|
5118 // Help tools |
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|
5119 inline BOOL os::Kernel32Dll::HelpToolsAvailable() { |
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|
5120 return true; |
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|
5121 } |
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|
5122 |
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|
5123 inline HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) { |
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5124 return ::CreateToolhelp32Snapshot(dwFlags, th32ProcessId); |
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|
5125 } |
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|
5126 |
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|
5127 inline BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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|
5128 return ::Module32First(hSnapshot, lpme); |
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|
5129 } |
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|
5130 |
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|
5131 inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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|
5132 return ::Module32Next(hSnapshot, lpme); |
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|
5133 } |
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|
5134 |
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|
5135 |
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|
5136 inline BOOL os::Kernel32Dll::GetNativeSystemInfoAvailable() { |
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|
5137 return true; |
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|
5138 } |
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|
5139 |
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|
5140 inline void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) { |
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|
5141 ::GetNativeSystemInfo(lpSystemInfo); |
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5142 } |
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|
5143 |
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|
5144 // PSAPI API |
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|
5145 inline BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) { |
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5146 return ::EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded); |
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5147 } |
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|
5148 |
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|
5149 inline DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) { |
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5150 return ::GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize); |
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5151 } |
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|
5152 |
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5153 inline BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) { |
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5154 return ::GetModuleInformation(hProcess, hModule, lpmodinfo, cb); |
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5155 } |
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|
5156 |
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|
5157 inline BOOL os::PSApiDll::PSApiAvailable() { |
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5158 return true; |
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5159 } |
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|
5160 |
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|
5161 |
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5162 // WinSock2 API |
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5163 inline BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) { |
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5164 return ::WSAStartup(wVersionRequested, lpWSAData); |
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5165 } |
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5166 |
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5167 inline struct hostent* os::WinSock2Dll::gethostbyname(const char *name) { |
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5168 return ::gethostbyname(name); |
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5169 } |
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5170 |
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5171 inline BOOL os::WinSock2Dll::WinSock2Available() { |
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5172 return true; |
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5173 } |
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5174 |
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5175 // Advapi API |
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5176 inline BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle, |
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5177 BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, |
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5178 PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) { |
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5179 return ::AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState, |
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5180 BufferLength, PreviousState, ReturnLength); |
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5181 } |
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5182 |
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5183 inline BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess, |
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5184 PHANDLE TokenHandle) { |
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5185 return ::OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle); |
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5186 } |
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5187 |
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5188 inline BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) { |
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5189 return ::LookupPrivilegeValue(lpSystemName, lpName, lpLuid); |
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5190 } |
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5191 |
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5192 inline BOOL os::Advapi32Dll::AdvapiAvailable() { |
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5193 return true; |
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5194 } |
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5195 |
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5196 #else |
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5197 // Kernel32 API |
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5198 typedef BOOL (WINAPI* SwitchToThread_Fn)(void); |
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5199 typedef HANDLE (WINAPI* CreateToolhelp32Snapshot_Fn)(DWORD,DWORD); |
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5200 typedef BOOL (WINAPI* Module32First_Fn)(HANDLE,LPMODULEENTRY32); |
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5201 typedef BOOL (WINAPI* Module32Next_Fn)(HANDLE,LPMODULEENTRY32); |
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5202 typedef void (WINAPI* GetNativeSystemInfo_Fn)(LPSYSTEM_INFO); |
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5203 |
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5204 SwitchToThread_Fn os::Kernel32Dll::_SwitchToThread = NULL; |
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5205 CreateToolhelp32Snapshot_Fn os::Kernel32Dll::_CreateToolhelp32Snapshot = NULL; |
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5206 Module32First_Fn os::Kernel32Dll::_Module32First = NULL; |
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5207 Module32Next_Fn os::Kernel32Dll::_Module32Next = NULL; |
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5208 GetNativeSystemInfo_Fn os::Kernel32Dll::_GetNativeSystemInfo = NULL; |
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5209 |
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5210 void os::Kernel32Dll::initialize() { |
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5211 if (!initialized) { |
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5212 HMODULE handle = ::GetModuleHandle("Kernel32.dll"); |
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5213 assert(handle != NULL, "Just check"); |
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5214 |
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5215 _SwitchToThread = (SwitchToThread_Fn)::GetProcAddress(handle, "SwitchToThread"); |
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5216 _CreateToolhelp32Snapshot = (CreateToolhelp32Snapshot_Fn) |
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5217 ::GetProcAddress(handle, "CreateToolhelp32Snapshot"); |
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5218 _Module32First = (Module32First_Fn)::GetProcAddress(handle, "Module32First"); |
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5219 _Module32Next = (Module32Next_Fn)::GetProcAddress(handle, "Module32Next"); |
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5220 _GetNativeSystemInfo = (GetNativeSystemInfo_Fn)::GetProcAddress(handle, "GetNativeSystemInfo"); |
3885 | 5221 initializeCommon(); // resolve the functions that always need resolving |
3833
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5222 |
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5223 initialized = TRUE; |
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5224 } |
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5225 } |
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5226 |
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5227 BOOL os::Kernel32Dll::SwitchToThread() { |
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5228 assert(initialized && _SwitchToThread != NULL, |
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5229 "SwitchToThreadAvailable() not yet called"); |
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5230 return _SwitchToThread(); |
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5231 } |
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5232 |
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|
5233 |
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5234 BOOL os::Kernel32Dll::SwitchToThreadAvailable() { |
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5235 if (!initialized) { |
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5236 initialize(); |
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5237 } |
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5238 return _SwitchToThread != NULL; |
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5239 } |
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|
5240 |
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5241 // Help tools |
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5242 BOOL os::Kernel32Dll::HelpToolsAvailable() { |
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5243 if (!initialized) { |
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5244 initialize(); |
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5245 } |
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5246 return _CreateToolhelp32Snapshot != NULL && |
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5247 _Module32First != NULL && |
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5248 _Module32Next != NULL; |
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5249 } |
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5250 |
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5251 HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) { |
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5252 assert(initialized && _CreateToolhelp32Snapshot != NULL, |
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5253 "HelpToolsAvailable() not yet called"); |
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5254 |
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5255 return _CreateToolhelp32Snapshot(dwFlags, th32ProcessId); |
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5256 } |
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|
5257 |
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5258 BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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5259 assert(initialized && _Module32First != NULL, |
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5260 "HelpToolsAvailable() not yet called"); |
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5261 |
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5262 return _Module32First(hSnapshot, lpme); |
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5263 } |
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5264 |
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5265 inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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5266 assert(initialized && _Module32Next != NULL, |
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5267 "HelpToolsAvailable() not yet called"); |
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5268 |
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5269 return _Module32Next(hSnapshot, lpme); |
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5270 } |
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|
5271 |
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|
5272 |
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5273 BOOL os::Kernel32Dll::GetNativeSystemInfoAvailable() { |
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5274 if (!initialized) { |
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5275 initialize(); |
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5276 } |
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5277 return _GetNativeSystemInfo != NULL; |
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5278 } |
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5279 |
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5280 void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) { |
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5281 assert(initialized && _GetNativeSystemInfo != NULL, |
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5282 "GetNativeSystemInfoAvailable() not yet called"); |
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|
5283 |
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5284 _GetNativeSystemInfo(lpSystemInfo); |
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5285 } |
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|
5286 |
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|
5287 // PSAPI API |
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|
5288 |
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|
5289 |
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5290 typedef BOOL (WINAPI *EnumProcessModules_Fn)(HANDLE, HMODULE *, DWORD, LPDWORD); |
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5291 typedef BOOL (WINAPI *GetModuleFileNameEx_Fn)(HANDLE, HMODULE, LPTSTR, DWORD);; |
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5292 typedef BOOL (WINAPI *GetModuleInformation_Fn)(HANDLE, HMODULE, LPMODULEINFO, DWORD); |
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|
5293 |
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5294 EnumProcessModules_Fn os::PSApiDll::_EnumProcessModules = NULL; |
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5295 GetModuleFileNameEx_Fn os::PSApiDll::_GetModuleFileNameEx = NULL; |
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5296 GetModuleInformation_Fn os::PSApiDll::_GetModuleInformation = NULL; |
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5297 BOOL os::PSApiDll::initialized = FALSE; |
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|
5298 |
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5299 void os::PSApiDll::initialize() { |
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5300 if (!initialized) { |
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5301 HMODULE handle = os::win32::load_Windows_dll("PSAPI.DLL", NULL, 0); |
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5302 if (handle != NULL) { |
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5303 _EnumProcessModules = (EnumProcessModules_Fn)::GetProcAddress(handle, |
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5304 "EnumProcessModules"); |
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5305 _GetModuleFileNameEx = (GetModuleFileNameEx_Fn)::GetProcAddress(handle, |
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5306 "GetModuleFileNameExA"); |
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5307 _GetModuleInformation = (GetModuleInformation_Fn)::GetProcAddress(handle, |
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5308 "GetModuleInformation"); |
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5309 } |
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5310 initialized = TRUE; |
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5311 } |
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5312 } |
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|
5313 |
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|
5314 |
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|
5315 |
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5316 BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) { |
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5317 assert(initialized && _EnumProcessModules != NULL, |
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5318 "PSApiAvailable() not yet called"); |
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5319 return _EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded); |
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5320 } |
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|
5321 |
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|
5322 DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) { |
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|
5323 assert(initialized && _GetModuleFileNameEx != NULL, |
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|
5324 "PSApiAvailable() not yet called"); |
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5325 return _GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize); |
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5326 } |
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|
5327 |
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|
5328 BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) { |
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|
5329 assert(initialized && _GetModuleInformation != NULL, |
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|
5330 "PSApiAvailable() not yet called"); |
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|
5331 return _GetModuleInformation(hProcess, hModule, lpmodinfo, cb); |
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5332 } |
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|
5333 |
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|
5334 BOOL os::PSApiDll::PSApiAvailable() { |
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|
5335 if (!initialized) { |
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|
5336 initialize(); |
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5337 } |
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5338 return _EnumProcessModules != NULL && |
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|
5339 _GetModuleFileNameEx != NULL && |
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|
5340 _GetModuleInformation != NULL; |
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5341 } |
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|
5342 |
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|
5343 |
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|
5344 // WinSock2 API |
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|
5345 typedef int (PASCAL FAR* WSAStartup_Fn)(WORD, LPWSADATA); |
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|
5346 typedef struct hostent *(PASCAL FAR *gethostbyname_Fn)(...); |
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|
5347 |
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|
5348 WSAStartup_Fn os::WinSock2Dll::_WSAStartup = NULL; |
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|
5349 gethostbyname_Fn os::WinSock2Dll::_gethostbyname = NULL; |
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|
5350 BOOL os::WinSock2Dll::initialized = FALSE; |
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|
5351 |
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|
5352 void os::WinSock2Dll::initialize() { |
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|
5353 if (!initialized) { |
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|
5354 HMODULE handle = os::win32::load_Windows_dll("ws2_32.dll", NULL, 0); |
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|
5355 if (handle != NULL) { |
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|
5356 _WSAStartup = (WSAStartup_Fn)::GetProcAddress(handle, "WSAStartup"); |
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5357 _gethostbyname = (gethostbyname_Fn)::GetProcAddress(handle, "gethostbyname"); |
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|
5358 } |
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|
5359 initialized = TRUE; |
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|
5360 } |
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|
5361 } |
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|
5362 |
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|
5363 |
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|
5364 BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) { |
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5365 assert(initialized && _WSAStartup != NULL, |
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|
5366 "WinSock2Available() not yet called"); |
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5367 return _WSAStartup(wVersionRequested, lpWSAData); |
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|
5368 } |
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|
5369 |
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|
5370 struct hostent* os::WinSock2Dll::gethostbyname(const char *name) { |
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5371 assert(initialized && _gethostbyname != NULL, |
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|
5372 "WinSock2Available() not yet called"); |
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5373 return _gethostbyname(name); |
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5374 } |
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|
5375 |
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|
5376 BOOL os::WinSock2Dll::WinSock2Available() { |
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5377 if (!initialized) { |
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|
5378 initialize(); |
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|
5379 } |
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5380 return _WSAStartup != NULL && |
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|
5381 _gethostbyname != NULL; |
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5382 } |
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|
5383 |
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5384 typedef BOOL (WINAPI *AdjustTokenPrivileges_Fn)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); |
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5385 typedef BOOL (WINAPI *OpenProcessToken_Fn)(HANDLE, DWORD, PHANDLE); |
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5386 typedef BOOL (WINAPI *LookupPrivilegeValue_Fn)(LPCTSTR, LPCTSTR, PLUID); |
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|
5387 |
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|
5388 AdjustTokenPrivileges_Fn os::Advapi32Dll::_AdjustTokenPrivileges = NULL; |
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5389 OpenProcessToken_Fn os::Advapi32Dll::_OpenProcessToken = NULL; |
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5390 LookupPrivilegeValue_Fn os::Advapi32Dll::_LookupPrivilegeValue = NULL; |
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5391 BOOL os::Advapi32Dll::initialized = FALSE; |
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|
5392 |
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5393 void os::Advapi32Dll::initialize() { |
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5394 if (!initialized) { |
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5395 HMODULE handle = os::win32::load_Windows_dll("advapi32.dll", NULL, 0); |
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5396 if (handle != NULL) { |
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5397 _AdjustTokenPrivileges = (AdjustTokenPrivileges_Fn)::GetProcAddress(handle, |
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5398 "AdjustTokenPrivileges"); |
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5399 _OpenProcessToken = (OpenProcessToken_Fn)::GetProcAddress(handle, |
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5400 "OpenProcessToken"); |
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5401 _LookupPrivilegeValue = (LookupPrivilegeValue_Fn)::GetProcAddress(handle, |
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5402 "LookupPrivilegeValueA"); |
3833
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5403 } |
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5404 initialized = TRUE; |
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5405 } |
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5406 } |
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5407 |
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5408 BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle, |
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5409 BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, |
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5410 PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) { |
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5411 assert(initialized && _AdjustTokenPrivileges != NULL, |
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5412 "AdvapiAvailable() not yet called"); |
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5413 return _AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState, |
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5414 BufferLength, PreviousState, ReturnLength); |
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5415 } |
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5416 |
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5417 BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess, |
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5418 PHANDLE TokenHandle) { |
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5419 assert(initialized && _OpenProcessToken != NULL, |
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5420 "AdvapiAvailable() not yet called"); |
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5421 return _OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle); |
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5422 } |
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5423 |
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5424 BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) { |
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5425 assert(initialized && _LookupPrivilegeValue != NULL, |
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5426 "AdvapiAvailable() not yet called"); |
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5427 return _LookupPrivilegeValue(lpSystemName, lpName, lpLuid); |
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5428 } |
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5429 |
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5430 BOOL os::Advapi32Dll::AdvapiAvailable() { |
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5431 if (!initialized) { |
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5432 initialize(); |
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5433 } |
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5434 return _AdjustTokenPrivileges != NULL && |
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5435 _OpenProcessToken != NULL && |
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5436 _LookupPrivilegeValue != NULL; |
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5437 } |
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5438 |
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5439 #endif |