Mercurial > hg > truffle
annotate src/os/windows/vm/os_windows.cpp @ 3585:f3e823ead645
Merge
author | Gilles Duboscq <gilles.m.duboscq@gmail.com> |
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date | Thu, 06 Oct 2011 17:14:21 +0200 |
parents | be4ca325525a |
children | 3a05d8465ff1 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 | |
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25 // Must be at least Windows 2000 or XP to use VectoredExceptions and 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" | |
35 #include "interpreter/interpreter.hpp" | |
36 #include "jvm_windows.h" | |
37 #include "memory/allocation.inline.hpp" | |
38 #include "memory/filemap.hpp" | |
39 #include "mutex_windows.inline.hpp" | |
40 #include "oops/oop.inline.hpp" | |
41 #include "os_share_windows.hpp" | |
42 #include "prims/jniFastGetField.hpp" | |
43 #include "prims/jvm.h" | |
44 #include "prims/jvm_misc.hpp" | |
45 #include "runtime/arguments.hpp" | |
46 #include "runtime/extendedPC.hpp" | |
47 #include "runtime/globals.hpp" | |
48 #include "runtime/interfaceSupport.hpp" | |
49 #include "runtime/java.hpp" | |
50 #include "runtime/javaCalls.hpp" | |
51 #include "runtime/mutexLocker.hpp" | |
52 #include "runtime/objectMonitor.hpp" | |
53 #include "runtime/osThread.hpp" | |
54 #include "runtime/perfMemory.hpp" | |
55 #include "runtime/sharedRuntime.hpp" | |
56 #include "runtime/statSampler.hpp" | |
57 #include "runtime/stubRoutines.hpp" | |
58 #include "runtime/threadCritical.hpp" | |
59 #include "runtime/timer.hpp" | |
60 #include "services/attachListener.hpp" | |
61 #include "services/runtimeService.hpp" | |
62 #include "thread_windows.inline.hpp" | |
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63 #include "utilities/decoder.hpp" |
1972 | 64 #include "utilities/defaultStream.hpp" |
65 #include "utilities/events.hpp" | |
66 #include "utilities/growableArray.hpp" | |
67 #include "utilities/vmError.hpp" | |
68 #ifdef TARGET_ARCH_x86 | |
69 # include "assembler_x86.inline.hpp" | |
70 # include "nativeInst_x86.hpp" | |
71 #endif | |
72 #ifdef COMPILER1 | |
73 #include "c1/c1_Runtime1.hpp" | |
74 #endif | |
75 #ifdef COMPILER2 | |
76 #include "opto/runtime.hpp" | |
77 #endif | |
0 | 78 |
79 #ifdef _DEBUG | |
80 #include <crtdbg.h> | |
81 #endif | |
82 | |
83 | |
84 #include <windows.h> | |
85 #include <sys/types.h> | |
86 #include <sys/stat.h> | |
87 #include <sys/timeb.h> | |
88 #include <objidl.h> | |
89 #include <shlobj.h> | |
90 | |
91 #include <malloc.h> | |
92 #include <signal.h> | |
93 #include <direct.h> | |
94 #include <errno.h> | |
95 #include <fcntl.h> | |
96 #include <io.h> | |
97 #include <process.h> // For _beginthreadex(), _endthreadex() | |
98 #include <imagehlp.h> // For os::dll_address_to_function_name | |
99 | |
100 /* for enumerating dll libraries */ | |
101 #include <vdmdbg.h> | |
102 | |
103 // for timer info max values which include all bits | |
104 #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) | |
105 | |
106 // For DLL loading/load error detection | |
107 // Values of PE COFF | |
108 #define IMAGE_FILE_PTR_TO_SIGNATURE 0x3c | |
109 #define IMAGE_FILE_SIGNATURE_LENGTH 4 | |
110 | |
111 static HANDLE main_process; | |
112 static HANDLE main_thread; | |
113 static int main_thread_id; | |
114 | |
115 static FILETIME process_creation_time; | |
116 static FILETIME process_exit_time; | |
117 static FILETIME process_user_time; | |
118 static FILETIME process_kernel_time; | |
119 | |
120 #ifdef _WIN64 | |
121 PVOID topLevelVectoredExceptionHandler = NULL; | |
122 #endif | |
123 | |
124 #ifdef _M_IA64 | |
125 #define __CPU__ ia64 | |
126 #elif _M_AMD64 | |
127 #define __CPU__ amd64 | |
128 #else | |
129 #define __CPU__ i486 | |
130 #endif | |
131 | |
132 // save DLL module handle, used by GetModuleFileName | |
133 | |
134 HINSTANCE vm_lib_handle; | |
135 static int getLastErrorString(char *buf, size_t len); | |
136 | |
137 BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) { | |
138 switch (reason) { | |
139 case DLL_PROCESS_ATTACH: | |
140 vm_lib_handle = hinst; | |
141 if(ForceTimeHighResolution) | |
142 timeBeginPeriod(1L); | |
143 break; | |
144 case DLL_PROCESS_DETACH: | |
145 if(ForceTimeHighResolution) | |
146 timeEndPeriod(1L); | |
147 #ifdef _WIN64 | |
148 if (topLevelVectoredExceptionHandler != NULL) { | |
149 RemoveVectoredExceptionHandler(topLevelVectoredExceptionHandler); | |
150 topLevelVectoredExceptionHandler = NULL; | |
151 } | |
152 #endif | |
153 break; | |
154 default: | |
155 break; | |
156 } | |
157 return true; | |
158 } | |
159 | |
160 static inline double fileTimeAsDouble(FILETIME* time) { | |
161 const double high = (double) ((unsigned int) ~0); | |
162 const double split = 10000000.0; | |
163 double result = (time->dwLowDateTime / split) + | |
164 time->dwHighDateTime * (high/split); | |
165 return result; | |
166 } | |
167 | |
168 // Implementation of os | |
169 | |
170 bool os::getenv(const char* name, char* buffer, int len) { | |
171 int result = GetEnvironmentVariable(name, buffer, len); | |
172 return result > 0 && result < len; | |
173 } | |
174 | |
175 | |
176 // No setuid programs under Windows. | |
177 bool os::have_special_privileges() { | |
178 return false; | |
179 } | |
180 | |
181 | |
182 // This method is a periodic task to check for misbehaving JNI applications | |
183 // under CheckJNI, we can add any periodic checks here. | |
184 // For Windows at the moment does nothing | |
185 void os::run_periodic_checks() { | |
186 return; | |
187 } | |
188 | |
189 #ifndef _WIN64 | |
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190 // previous UnhandledExceptionFilter, if there is one |
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191 static LPTOP_LEVEL_EXCEPTION_FILTER prev_uef_handler = NULL; |
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192 |
0 | 193 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo); |
194 #endif | |
195 void os::init_system_properties_values() { | |
196 /* sysclasspath, java_home, dll_dir */ | |
197 { | |
198 char *home_path; | |
199 char *dll_path; | |
200 char *pslash; | |
201 char *bin = "\\bin"; | |
202 char home_dir[MAX_PATH]; | |
203 | |
204 if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) { | |
205 os::jvm_path(home_dir, sizeof(home_dir)); | |
206 // Found the full path to jvm[_g].dll. | |
207 // Now cut the path to <java_home>/jre if we can. | |
208 *(strrchr(home_dir, '\\')) = '\0'; /* get rid of \jvm.dll */ | |
209 pslash = strrchr(home_dir, '\\'); | |
210 if (pslash != NULL) { | |
211 *pslash = '\0'; /* get rid of \{client|server} */ | |
212 pslash = strrchr(home_dir, '\\'); | |
213 if (pslash != NULL) | |
214 *pslash = '\0'; /* get rid of \bin */ | |
215 } | |
216 } | |
217 | |
218 home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1); | |
219 if (home_path == NULL) | |
220 return; | |
221 strcpy(home_path, home_dir); | |
222 Arguments::set_java_home(home_path); | |
223 | |
224 dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1); | |
225 if (dll_path == NULL) | |
226 return; | |
227 strcpy(dll_path, home_dir); | |
228 strcat(dll_path, bin); | |
229 Arguments::set_dll_dir(dll_path); | |
230 | |
231 if (!set_boot_path('\\', ';')) | |
232 return; | |
233 } | |
234 | |
235 /* library_path */ | |
236 #define EXT_DIR "\\lib\\ext" | |
237 #define BIN_DIR "\\bin" | |
238 #define PACKAGE_DIR "\\Sun\\Java" | |
239 { | |
240 /* Win32 library search order (See the documentation for LoadLibrary): | |
241 * | |
242 * 1. The directory from which application is loaded. | |
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243 * 2. The system wide Java Extensions directory (Java only) |
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244 * 3. System directory (GetSystemDirectory) |
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245 * 4. Windows directory (GetWindowsDirectory) |
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246 * 5. The PATH environment variable |
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247 * 6. The current directory |
0 | 248 */ |
249 | |
250 char *library_path; | |
251 char tmp[MAX_PATH]; | |
252 char *path_str = ::getenv("PATH"); | |
253 | |
254 library_path = NEW_C_HEAP_ARRAY(char, MAX_PATH * 5 + sizeof(PACKAGE_DIR) + | |
255 sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10); | |
256 | |
257 library_path[0] = '\0'; | |
258 | |
259 GetModuleFileName(NULL, tmp, sizeof(tmp)); | |
260 *(strrchr(tmp, '\\')) = '\0'; | |
261 strcat(library_path, tmp); | |
262 | |
263 GetWindowsDirectory(tmp, sizeof(tmp)); | |
264 strcat(library_path, ";"); | |
265 strcat(library_path, tmp); | |
266 strcat(library_path, PACKAGE_DIR BIN_DIR); | |
267 | |
268 GetSystemDirectory(tmp, sizeof(tmp)); | |
269 strcat(library_path, ";"); | |
270 strcat(library_path, tmp); | |
271 | |
272 GetWindowsDirectory(tmp, sizeof(tmp)); | |
273 strcat(library_path, ";"); | |
274 strcat(library_path, tmp); | |
275 | |
276 if (path_str) { | |
277 strcat(library_path, ";"); | |
278 strcat(library_path, path_str); | |
279 } | |
280 | |
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281 strcat(library_path, ";."); |
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282 |
0 | 283 Arguments::set_library_path(library_path); |
284 FREE_C_HEAP_ARRAY(char, library_path); | |
285 } | |
286 | |
287 /* Default extensions directory */ | |
288 { | |
289 char path[MAX_PATH]; | |
290 char buf[2 * MAX_PATH + 2 * sizeof(EXT_DIR) + sizeof(PACKAGE_DIR) + 1]; | |
291 GetWindowsDirectory(path, MAX_PATH); | |
292 sprintf(buf, "%s%s;%s%s%s", Arguments::get_java_home(), EXT_DIR, | |
293 path, PACKAGE_DIR, EXT_DIR); | |
294 Arguments::set_ext_dirs(buf); | |
295 } | |
296 #undef EXT_DIR | |
297 #undef BIN_DIR | |
298 #undef PACKAGE_DIR | |
299 | |
300 /* Default endorsed standards directory. */ | |
301 { | |
302 #define ENDORSED_DIR "\\lib\\endorsed" | |
303 size_t len = strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR); | |
304 char * buf = NEW_C_HEAP_ARRAY(char, len); | |
305 sprintf(buf, "%s%s", Arguments::get_java_home(), ENDORSED_DIR); | |
306 Arguments::set_endorsed_dirs(buf); | |
307 #undef ENDORSED_DIR | |
308 } | |
309 | |
310 #ifndef _WIN64 | |
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311 // set our UnhandledExceptionFilter and save any previous one |
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312 prev_uef_handler = SetUnhandledExceptionFilter(Handle_FLT_Exception); |
0 | 313 #endif |
314 | |
315 // Done | |
316 return; | |
317 } | |
318 | |
319 void os::breakpoint() { | |
320 DebugBreak(); | |
321 } | |
322 | |
323 // Invoked from the BREAKPOINT Macro | |
324 extern "C" void breakpoint() { | |
325 os::breakpoint(); | |
326 } | |
327 | |
328 // Returns an estimate of the current stack pointer. Result must be guaranteed | |
329 // to point into the calling threads stack, and be no lower than the current | |
330 // stack pointer. | |
331 | |
332 address os::current_stack_pointer() { | |
333 int dummy; | |
334 address sp = (address)&dummy; | |
335 return sp; | |
336 } | |
337 | |
338 // os::current_stack_base() | |
339 // | |
340 // Returns the base of the stack, which is the stack's | |
341 // starting address. This function must be called | |
342 // while running on the stack of the thread being queried. | |
343 | |
344 address os::current_stack_base() { | |
345 MEMORY_BASIC_INFORMATION minfo; | |
346 address stack_bottom; | |
347 size_t stack_size; | |
348 | |
349 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
350 stack_bottom = (address)minfo.AllocationBase; | |
351 stack_size = minfo.RegionSize; | |
352 | |
353 // Add up the sizes of all the regions with the same | |
354 // AllocationBase. | |
355 while( 1 ) | |
356 { | |
357 VirtualQuery(stack_bottom+stack_size, &minfo, sizeof(minfo)); | |
358 if ( stack_bottom == (address)minfo.AllocationBase ) | |
359 stack_size += minfo.RegionSize; | |
360 else | |
361 break; | |
362 } | |
363 | |
364 #ifdef _M_IA64 | |
365 // IA64 has memory and register stacks | |
366 stack_size = stack_size / 2; | |
367 #endif | |
368 return stack_bottom + stack_size; | |
369 } | |
370 | |
371 size_t os::current_stack_size() { | |
372 size_t sz; | |
373 MEMORY_BASIC_INFORMATION minfo; | |
374 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
375 sz = (size_t)os::current_stack_base() - (size_t)minfo.AllocationBase; | |
376 return sz; | |
377 } | |
378 | |
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379 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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380 const struct tm* time_struct_ptr = localtime(clock); |
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381 if (time_struct_ptr != NULL) { |
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382 *res = *time_struct_ptr; |
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383 return res; |
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384 } |
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385 return NULL; |
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386 } |
0 | 387 |
388 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo); | |
389 | |
390 // Thread start routine for all new Java threads | |
391 static unsigned __stdcall java_start(Thread* thread) { | |
392 // Try to randomize the cache line index of hot stack frames. | |
393 // This helps when threads of the same stack traces evict each other's | |
394 // cache lines. The threads can be either from the same JVM instance, or | |
395 // from different JVM instances. The benefit is especially true for | |
396 // processors with hyperthreading technology. | |
397 static int counter = 0; | |
398 int pid = os::current_process_id(); | |
399 _alloca(((pid ^ counter++) & 7) * 128); | |
400 | |
401 OSThread* osthr = thread->osthread(); | |
402 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
403 | |
404 if (UseNUMA) { | |
405 int lgrp_id = os::numa_get_group_id(); | |
406 if (lgrp_id != -1) { | |
407 thread->set_lgrp_id(lgrp_id); | |
408 } | |
409 } | |
410 | |
411 if (UseVectoredExceptions) { | |
412 // If we are using vectored exception we don't need to set a SEH | |
413 thread->run(); | |
414 } | |
415 else { | |
416 // Install a win32 structured exception handler around every thread created | |
417 // by VM, so VM can genrate error dump when an exception occurred in non- | |
418 // Java thread (e.g. VM thread). | |
419 __try { | |
420 thread->run(); | |
421 } __except(topLevelExceptionFilter( | |
422 (_EXCEPTION_POINTERS*)_exception_info())) { | |
423 // Nothing to do. | |
424 } | |
425 } | |
426 | |
427 // One less thread is executing | |
428 // When the VMThread gets here, the main thread may have already exited | |
429 // which frees the CodeHeap containing the Atomic::add code | |
430 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
431 Atomic::dec_ptr((intptr_t*)&os::win32::_os_thread_count); | |
432 } | |
433 | |
434 return 0; | |
435 } | |
436 | |
437 static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle, int thread_id) { | |
438 // Allocate the OSThread object | |
439 OSThread* osthread = new OSThread(NULL, NULL); | |
440 if (osthread == NULL) return NULL; | |
441 | |
442 // Initialize support for Java interrupts | |
443 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
444 if (interrupt_event == NULL) { | |
445 delete osthread; | |
446 return NULL; | |
447 } | |
448 osthread->set_interrupt_event(interrupt_event); | |
449 | |
450 // Store info on the Win32 thread into the OSThread | |
451 osthread->set_thread_handle(thread_handle); | |
452 osthread->set_thread_id(thread_id); | |
453 | |
454 if (UseNUMA) { | |
455 int lgrp_id = os::numa_get_group_id(); | |
456 if (lgrp_id != -1) { | |
457 thread->set_lgrp_id(lgrp_id); | |
458 } | |
459 } | |
460 | |
461 // Initial thread state is INITIALIZED, not SUSPENDED | |
462 osthread->set_state(INITIALIZED); | |
463 | |
464 return osthread; | |
465 } | |
466 | |
467 | |
468 bool os::create_attached_thread(JavaThread* thread) { | |
469 #ifdef ASSERT | |
470 thread->verify_not_published(); | |
471 #endif | |
472 HANDLE thread_h; | |
473 if (!DuplicateHandle(main_process, GetCurrentThread(), GetCurrentProcess(), | |
474 &thread_h, THREAD_ALL_ACCESS, false, 0)) { | |
475 fatal("DuplicateHandle failed\n"); | |
476 } | |
477 OSThread* osthread = create_os_thread(thread, thread_h, | |
478 (int)current_thread_id()); | |
479 if (osthread == NULL) { | |
480 return false; | |
481 } | |
482 | |
483 // Initial thread state is RUNNABLE | |
484 osthread->set_state(RUNNABLE); | |
485 | |
486 thread->set_osthread(osthread); | |
487 return true; | |
488 } | |
489 | |
490 bool os::create_main_thread(JavaThread* thread) { | |
491 #ifdef ASSERT | |
492 thread->verify_not_published(); | |
493 #endif | |
494 if (_starting_thread == NULL) { | |
495 _starting_thread = create_os_thread(thread, main_thread, main_thread_id); | |
496 if (_starting_thread == NULL) { | |
497 return false; | |
498 } | |
499 } | |
500 | |
501 // The primordial thread is runnable from the start) | |
502 _starting_thread->set_state(RUNNABLE); | |
503 | |
504 thread->set_osthread(_starting_thread); | |
505 return true; | |
506 } | |
507 | |
508 // Allocate and initialize a new OSThread | |
509 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
510 unsigned thread_id; | |
511 | |
512 // Allocate the OSThread object | |
513 OSThread* osthread = new OSThread(NULL, NULL); | |
514 if (osthread == NULL) { | |
515 return false; | |
516 } | |
517 | |
518 // Initialize support for Java interrupts | |
519 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
520 if (interrupt_event == NULL) { | |
521 delete osthread; | |
522 return NULL; | |
523 } | |
524 osthread->set_interrupt_event(interrupt_event); | |
525 osthread->set_interrupted(false); | |
526 | |
527 thread->set_osthread(osthread); | |
528 | |
529 if (stack_size == 0) { | |
530 switch (thr_type) { | |
531 case os::java_thread: | |
532 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
533 if (JavaThread::stack_size_at_create() > 0) | |
534 stack_size = JavaThread::stack_size_at_create(); | |
535 break; | |
536 case os::compiler_thread: | |
537 if (CompilerThreadStackSize > 0) { | |
538 stack_size = (size_t)(CompilerThreadStackSize * K); | |
539 break; | |
540 } // else fall through: | |
541 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
542 case os::vm_thread: | |
543 case os::pgc_thread: | |
544 case os::cgc_thread: | |
545 case os::watcher_thread: | |
546 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
547 break; | |
548 } | |
549 } | |
550 | |
551 // Create the Win32 thread | |
552 // | |
553 // Contrary to what MSDN document says, "stack_size" in _beginthreadex() | |
554 // does not specify stack size. Instead, it specifies the size of | |
555 // initially committed space. The stack size is determined by | |
556 // PE header in the executable. If the committed "stack_size" is larger | |
557 // than default value in the PE header, the stack is rounded up to the | |
558 // nearest multiple of 1MB. For example if the launcher has default | |
559 // stack size of 320k, specifying any size less than 320k does not | |
560 // affect the actual stack size at all, it only affects the initial | |
561 // commitment. On the other hand, specifying 'stack_size' larger than | |
562 // default value may cause significant increase in memory usage, because | |
563 // not only the stack space will be rounded up to MB, but also the | |
564 // entire space is committed upfront. | |
565 // | |
566 // Finally Windows XP added a new flag 'STACK_SIZE_PARAM_IS_A_RESERVATION' | |
567 // for CreateThread() that can treat 'stack_size' as stack size. However we | |
568 // are not supposed to call CreateThread() directly according to MSDN | |
569 // document because JVM uses C runtime library. The good news is that the | |
570 // flag appears to work with _beginthredex() as well. | |
571 | |
572 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION | |
573 #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000) | |
574 #endif | |
575 | |
576 HANDLE thread_handle = | |
577 (HANDLE)_beginthreadex(NULL, | |
578 (unsigned)stack_size, | |
579 (unsigned (__stdcall *)(void*)) java_start, | |
580 thread, | |
581 CREATE_SUSPENDED | STACK_SIZE_PARAM_IS_A_RESERVATION, | |
582 &thread_id); | |
583 if (thread_handle == NULL) { | |
584 // perhaps STACK_SIZE_PARAM_IS_A_RESERVATION is not supported, try again | |
585 // without the flag. | |
586 thread_handle = | |
587 (HANDLE)_beginthreadex(NULL, | |
588 (unsigned)stack_size, | |
589 (unsigned (__stdcall *)(void*)) java_start, | |
590 thread, | |
591 CREATE_SUSPENDED, | |
592 &thread_id); | |
593 } | |
594 if (thread_handle == NULL) { | |
595 // Need to clean up stuff we've allocated so far | |
596 CloseHandle(osthread->interrupt_event()); | |
597 thread->set_osthread(NULL); | |
598 delete osthread; | |
599 return NULL; | |
600 } | |
601 | |
602 Atomic::inc_ptr((intptr_t*)&os::win32::_os_thread_count); | |
603 | |
604 // Store info on the Win32 thread into the OSThread | |
605 osthread->set_thread_handle(thread_handle); | |
606 osthread->set_thread_id(thread_id); | |
607 | |
608 // Initial thread state is INITIALIZED, not SUSPENDED | |
609 osthread->set_state(INITIALIZED); | |
610 | |
611 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
612 return true; | |
613 } | |
614 | |
615 | |
616 // Free Win32 resources related to the OSThread | |
617 void os::free_thread(OSThread* osthread) { | |
618 assert(osthread != NULL, "osthread not set"); | |
619 CloseHandle(osthread->thread_handle()); | |
620 CloseHandle(osthread->interrupt_event()); | |
621 delete osthread; | |
622 } | |
623 | |
624 | |
625 static int has_performance_count = 0; | |
626 static jlong first_filetime; | |
627 static jlong initial_performance_count; | |
628 static jlong performance_frequency; | |
629 | |
630 | |
631 jlong as_long(LARGE_INTEGER x) { | |
632 jlong result = 0; // initialization to avoid warning | |
633 set_high(&result, x.HighPart); | |
634 set_low(&result, x.LowPart); | |
635 return result; | |
636 } | |
637 | |
638 | |
639 jlong os::elapsed_counter() { | |
640 LARGE_INTEGER count; | |
641 if (has_performance_count) { | |
642 QueryPerformanceCounter(&count); | |
643 return as_long(count) - initial_performance_count; | |
644 } else { | |
645 FILETIME wt; | |
646 GetSystemTimeAsFileTime(&wt); | |
647 return (jlong_from(wt.dwHighDateTime, wt.dwLowDateTime) - first_filetime); | |
648 } | |
649 } | |
650 | |
651 | |
652 jlong os::elapsed_frequency() { | |
653 if (has_performance_count) { | |
654 return performance_frequency; | |
655 } else { | |
656 // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601. | |
657 return 10000000; | |
658 } | |
659 } | |
660 | |
661 | |
662 julong os::available_memory() { | |
663 return win32::available_memory(); | |
664 } | |
665 | |
666 julong os::win32::available_memory() { | |
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667 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
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668 // value if total memory is larger than 4GB |
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669 MEMORYSTATUSEX ms; |
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670 ms.dwLength = sizeof(ms); |
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671 GlobalMemoryStatusEx(&ms); |
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672 |
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673 return (julong)ms.ullAvailPhys; |
0 | 674 } |
675 | |
676 julong os::physical_memory() { | |
677 return win32::physical_memory(); | |
678 } | |
679 | |
680 julong os::allocatable_physical_memory(julong size) { | |
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681 #ifdef _LP64 |
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682 return size; |
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683 #else |
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684 // Limit to 1400m because of the 2gb address space wall |
0 | 685 return MIN2(size, (julong)1400*M); |
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686 #endif |
0 | 687 } |
688 | |
689 // VC6 lacks DWORD_PTR | |
690 #if _MSC_VER < 1300 | |
691 typedef UINT_PTR DWORD_PTR; | |
692 #endif | |
693 | |
694 int os::active_processor_count() { | |
695 DWORD_PTR lpProcessAffinityMask = 0; | |
696 DWORD_PTR lpSystemAffinityMask = 0; | |
697 int proc_count = processor_count(); | |
698 if (proc_count <= sizeof(UINT_PTR) * BitsPerByte && | |
699 GetProcessAffinityMask(GetCurrentProcess(), &lpProcessAffinityMask, &lpSystemAffinityMask)) { | |
700 // Nof active processors is number of bits in process affinity mask | |
701 int bitcount = 0; | |
702 while (lpProcessAffinityMask != 0) { | |
703 lpProcessAffinityMask = lpProcessAffinityMask & (lpProcessAffinityMask-1); | |
704 bitcount++; | |
705 } | |
706 return bitcount; | |
707 } else { | |
708 return proc_count; | |
709 } | |
710 } | |
711 | |
712 bool os::distribute_processes(uint length, uint* distribution) { | |
713 // Not yet implemented. | |
714 return false; | |
715 } | |
716 | |
717 bool os::bind_to_processor(uint processor_id) { | |
718 // Not yet implemented. | |
719 return false; | |
720 } | |
721 | |
722 static void initialize_performance_counter() { | |
723 LARGE_INTEGER count; | |
724 if (QueryPerformanceFrequency(&count)) { | |
725 has_performance_count = 1; | |
726 performance_frequency = as_long(count); | |
727 QueryPerformanceCounter(&count); | |
728 initial_performance_count = as_long(count); | |
729 } else { | |
730 has_performance_count = 0; | |
731 FILETIME wt; | |
732 GetSystemTimeAsFileTime(&wt); | |
733 first_filetime = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
734 } | |
735 } | |
736 | |
737 | |
738 double os::elapsedTime() { | |
739 return (double) elapsed_counter() / (double) elapsed_frequency(); | |
740 } | |
741 | |
742 | |
743 // Windows format: | |
744 // The FILETIME structure is a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601. | |
745 // Java format: | |
746 // Java standards require the number of milliseconds since 1/1/1970 | |
747 | |
748 // Constant offset - calculated using offset() | |
749 static jlong _offset = 116444736000000000; | |
750 // Fake time counter for reproducible results when debugging | |
751 static jlong fake_time = 0; | |
752 | |
753 #ifdef ASSERT | |
754 // Just to be safe, recalculate the offset in debug mode | |
755 static jlong _calculated_offset = 0; | |
756 static int _has_calculated_offset = 0; | |
757 | |
758 jlong offset() { | |
759 if (_has_calculated_offset) return _calculated_offset; | |
760 SYSTEMTIME java_origin; | |
761 java_origin.wYear = 1970; | |
762 java_origin.wMonth = 1; | |
763 java_origin.wDayOfWeek = 0; // ignored | |
764 java_origin.wDay = 1; | |
765 java_origin.wHour = 0; | |
766 java_origin.wMinute = 0; | |
767 java_origin.wSecond = 0; | |
768 java_origin.wMilliseconds = 0; | |
769 FILETIME jot; | |
770 if (!SystemTimeToFileTime(&java_origin, &jot)) { | |
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771 fatal(err_msg("Error = %d\nWindows error", GetLastError())); |
0 | 772 } |
773 _calculated_offset = jlong_from(jot.dwHighDateTime, jot.dwLowDateTime); | |
774 _has_calculated_offset = 1; | |
775 assert(_calculated_offset == _offset, "Calculated and constant time offsets must be equal"); | |
776 return _calculated_offset; | |
777 } | |
778 #else | |
779 jlong offset() { | |
780 return _offset; | |
781 } | |
782 #endif | |
783 | |
784 jlong windows_to_java_time(FILETIME wt) { | |
785 jlong a = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
786 return (a - offset()) / 10000; | |
787 } | |
788 | |
789 FILETIME java_to_windows_time(jlong l) { | |
790 jlong a = (l * 10000) + offset(); | |
791 FILETIME result; | |
792 result.dwHighDateTime = high(a); | |
793 result.dwLowDateTime = low(a); | |
794 return result; | |
795 } | |
796 | |
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797 // For now, we say that Windows does not support vtime. I have no idea |
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798 // whether it can actually be made to (DLD, 9/13/05). |
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799 |
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800 bool os::supports_vtime() { return false; } |
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801 bool os::enable_vtime() { return false; } |
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802 bool os::vtime_enabled() { return false; } |
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803 double os::elapsedVTime() { |
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804 // better than nothing, but not much |
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805 return elapsedTime(); |
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806 } |
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807 |
0 | 808 jlong os::javaTimeMillis() { |
809 if (UseFakeTimers) { | |
810 return fake_time++; | |
811 } else { | |
61 | 812 FILETIME wt; |
813 GetSystemTimeAsFileTime(&wt); | |
814 return windows_to_java_time(wt); | |
0 | 815 } |
816 } | |
817 | |
818 #define NANOS_PER_SEC CONST64(1000000000) | |
819 #define NANOS_PER_MILLISEC 1000000 | |
820 jlong os::javaTimeNanos() { | |
821 if (!has_performance_count) { | |
822 return javaTimeMillis() * NANOS_PER_MILLISEC; // the best we can do. | |
823 } else { | |
824 LARGE_INTEGER current_count; | |
825 QueryPerformanceCounter(¤t_count); | |
826 double current = as_long(current_count); | |
827 double freq = performance_frequency; | |
828 jlong time = (jlong)((current/freq) * NANOS_PER_SEC); | |
829 return time; | |
830 } | |
831 } | |
832 | |
833 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
834 if (!has_performance_count) { | |
835 // javaTimeMillis() doesn't have much percision, | |
836 // but it is not going to wrap -- so all 64 bits | |
837 info_ptr->max_value = ALL_64_BITS; | |
838 | |
839 // this is a wall clock timer, so may skip | |
840 info_ptr->may_skip_backward = true; | |
841 info_ptr->may_skip_forward = true; | |
842 } else { | |
843 jlong freq = performance_frequency; | |
844 if (freq < NANOS_PER_SEC) { | |
845 // the performance counter is 64 bits and we will | |
846 // be multiplying it -- so no wrap in 64 bits | |
847 info_ptr->max_value = ALL_64_BITS; | |
848 } else if (freq > NANOS_PER_SEC) { | |
849 // use the max value the counter can reach to | |
850 // determine the max value which could be returned | |
851 julong max_counter = (julong)ALL_64_BITS; | |
852 info_ptr->max_value = (jlong)(max_counter / (freq / NANOS_PER_SEC)); | |
853 } else { | |
854 // the performance counter is 64 bits and we will | |
855 // be using it directly -- so no wrap in 64 bits | |
856 info_ptr->max_value = ALL_64_BITS; | |
857 } | |
858 | |
859 // using a counter, so no skipping | |
860 info_ptr->may_skip_backward = false; | |
861 info_ptr->may_skip_forward = false; | |
862 } | |
863 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
864 } | |
865 | |
866 char* os::local_time_string(char *buf, size_t buflen) { | |
867 SYSTEMTIME st; | |
868 GetLocalTime(&st); | |
869 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
870 st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond); | |
871 return buf; | |
872 } | |
873 | |
874 bool os::getTimesSecs(double* process_real_time, | |
875 double* process_user_time, | |
876 double* process_system_time) { | |
877 HANDLE h_process = GetCurrentProcess(); | |
878 FILETIME create_time, exit_time, kernel_time, user_time; | |
879 BOOL result = GetProcessTimes(h_process, | |
880 &create_time, | |
881 &exit_time, | |
882 &kernel_time, | |
883 &user_time); | |
884 if (result != 0) { | |
885 FILETIME wt; | |
886 GetSystemTimeAsFileTime(&wt); | |
887 jlong rtc_millis = windows_to_java_time(wt); | |
888 jlong user_millis = windows_to_java_time(user_time); | |
889 jlong system_millis = windows_to_java_time(kernel_time); | |
890 *process_real_time = ((double) rtc_millis) / ((double) MILLIUNITS); | |
891 *process_user_time = ((double) user_millis) / ((double) MILLIUNITS); | |
892 *process_system_time = ((double) system_millis) / ((double) MILLIUNITS); | |
893 return true; | |
894 } else { | |
895 return false; | |
896 } | |
897 } | |
898 | |
899 void os::shutdown() { | |
900 | |
901 // allow PerfMemory to attempt cleanup of any persistent resources | |
902 perfMemory_exit(); | |
903 | |
904 // flush buffered output, finish log files | |
905 ostream_abort(); | |
906 | |
907 // Check for abort hook | |
908 abort_hook_t abort_hook = Arguments::abort_hook(); | |
909 if (abort_hook != NULL) { | |
910 abort_hook(); | |
911 } | |
912 } | |
913 | |
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914 |
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915 static BOOL (WINAPI *_MiniDumpWriteDump) ( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
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916 PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION); |
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917 |
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918 void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) { |
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919 HINSTANCE dbghelp; |
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920 EXCEPTION_POINTERS ep; |
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921 MINIDUMP_EXCEPTION_INFORMATION mei; |
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922 MINIDUMP_EXCEPTION_INFORMATION* pmei; |
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923 |
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924 HANDLE hProcess = GetCurrentProcess(); |
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925 DWORD processId = GetCurrentProcessId(); |
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926 HANDLE dumpFile; |
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927 MINIDUMP_TYPE dumpType; |
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928 static const char* cwd; |
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929 |
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930 // If running on a client version of Windows and user has not explicitly enabled dumping |
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931 if (!os::win32::is_windows_server() && !CreateMinidumpOnCrash) { |
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932 VMError::report_coredump_status("Minidumps are not enabled by default on client versions of Windows", false); |
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933 return; |
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934 // If running on a server version of Windows and user has explictly disabled dumping |
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935 } else if (os::win32::is_windows_server() && !FLAG_IS_DEFAULT(CreateMinidumpOnCrash) && !CreateMinidumpOnCrash) { |
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936 VMError::report_coredump_status("Minidump has been disabled from the command line", false); |
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937 return; |
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938 } |
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939 |
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940 dbghelp = os::win32::load_Windows_dll("DBGHELP.DLL", NULL, 0); |
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941 |
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942 if (dbghelp == NULL) { |
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943 VMError::report_coredump_status("Failed to load dbghelp.dll", false); |
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944 return; |
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945 } |
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946 |
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947 _MiniDumpWriteDump = CAST_TO_FN_PTR( |
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948 BOOL(WINAPI *)( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
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949 PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION), |
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950 GetProcAddress(dbghelp, "MiniDumpWriteDump")); |
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951 |
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952 if (_MiniDumpWriteDump == NULL) { |
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953 VMError::report_coredump_status("Failed to find MiniDumpWriteDump() in module dbghelp.dll", false); |
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954 return; |
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955 } |
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956 |
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957 dumpType = (MINIDUMP_TYPE)(MiniDumpWithFullMemory | MiniDumpWithHandleData); |
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958 |
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959 // Older versions of dbghelp.h doesn't contain all the dumptypes we want, dbghelp.h with |
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960 // API_VERSION_NUMBER 11 or higher contains the ones we want though |
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961 #if API_VERSION_NUMBER >= 11 |
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962 dumpType = (MINIDUMP_TYPE)(dumpType | MiniDumpWithFullMemoryInfo | MiniDumpWithThreadInfo | |
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963 MiniDumpWithUnloadedModules); |
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964 #endif |
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965 |
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966 cwd = get_current_directory(NULL, 0); |
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967 jio_snprintf(buffer, bufferSize, "%s\\hs_err_pid%u.mdmp",cwd, current_process_id()); |
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968 dumpFile = CreateFile(buffer, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
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969 |
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970 if (dumpFile == INVALID_HANDLE_VALUE) { |
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971 VMError::report_coredump_status("Failed to create file for dumping", false); |
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972 return; |
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973 } |
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974 if (exceptionRecord != NULL && contextRecord != NULL) { |
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975 ep.ContextRecord = (PCONTEXT) contextRecord; |
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976 ep.ExceptionRecord = (PEXCEPTION_RECORD) exceptionRecord; |
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977 |
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978 mei.ThreadId = GetCurrentThreadId(); |
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979 mei.ExceptionPointers = &ep; |
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980 pmei = &mei; |
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981 } else { |
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982 pmei = NULL; |
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983 } |
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984 |
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985 |
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986 // Older versions of dbghelp.dll (the one shipped with Win2003 for example) may not support all |
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987 // the dump types we really want. If first call fails, lets fall back to just use MiniDumpWithFullMemory then. |
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988 if (_MiniDumpWriteDump(hProcess, processId, dumpFile, dumpType, pmei, NULL, NULL) == false && |
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989 _MiniDumpWriteDump(hProcess, processId, dumpFile, (MINIDUMP_TYPE)MiniDumpWithFullMemory, pmei, NULL, NULL) == false) { |
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990 VMError::report_coredump_status("Call to MiniDumpWriteDump() failed", false); |
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991 } else { |
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992 VMError::report_coredump_status(buffer, true); |
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993 } |
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994 |
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995 CloseHandle(dumpFile); |
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996 } |
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997 |
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998 |
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999 |
0 | 1000 void os::abort(bool dump_core) |
1001 { | |
1002 os::shutdown(); | |
1003 // no core dump on Windows | |
1004 ::exit(1); | |
1005 } | |
1006 | |
1007 // Die immediately, no exit hook, no abort hook, no cleanup. | |
1008 void os::die() { | |
1009 _exit(-1); | |
1010 } | |
1011 | |
1012 // Directory routines copied from src/win32/native/java/io/dirent_md.c | |
1013 // * dirent_md.c 1.15 00/02/02 | |
1014 // | |
1015 // The declarations for DIR and struct dirent are in jvm_win32.h. | |
1016 | |
1017 /* Caller must have already run dirname through JVM_NativePath, which removes | |
1018 duplicate slashes and converts all instances of '/' into '\\'. */ | |
1019 | |
1020 DIR * | |
1021 os::opendir(const char *dirname) | |
1022 { | |
1023 assert(dirname != NULL, "just checking"); // hotspot change | |
1024 DIR *dirp = (DIR *)malloc(sizeof(DIR)); | |
1025 DWORD fattr; // hotspot change | |
1026 char alt_dirname[4] = { 0, 0, 0, 0 }; | |
1027 | |
1028 if (dirp == 0) { | |
1029 errno = ENOMEM; | |
1030 return 0; | |
1031 } | |
1032 | |
1033 /* | |
1034 * Win32 accepts "\" in its POSIX stat(), but refuses to treat it | |
1035 * as a directory in FindFirstFile(). We detect this case here and | |
1036 * prepend the current drive name. | |
1037 */ | |
1038 if (dirname[1] == '\0' && dirname[0] == '\\') { | |
1039 alt_dirname[0] = _getdrive() + 'A' - 1; | |
1040 alt_dirname[1] = ':'; | |
1041 alt_dirname[2] = '\\'; | |
1042 alt_dirname[3] = '\0'; | |
1043 dirname = alt_dirname; | |
1044 } | |
1045 | |
1046 dirp->path = (char *)malloc(strlen(dirname) + 5); | |
1047 if (dirp->path == 0) { | |
1048 free(dirp); | |
1049 errno = ENOMEM; | |
1050 return 0; | |
1051 } | |
1052 strcpy(dirp->path, dirname); | |
1053 | |
1054 fattr = GetFileAttributes(dirp->path); | |
1055 if (fattr == 0xffffffff) { | |
1056 free(dirp->path); | |
1057 free(dirp); | |
1058 errno = ENOENT; | |
1059 return 0; | |
1060 } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) { | |
1061 free(dirp->path); | |
1062 free(dirp); | |
1063 errno = ENOTDIR; | |
1064 return 0; | |
1065 } | |
1066 | |
1067 /* Append "*.*", or possibly "\\*.*", to path */ | |
1068 if (dirp->path[1] == ':' | |
1069 && (dirp->path[2] == '\0' | |
1070 || (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) { | |
1071 /* No '\\' needed for cases like "Z:" or "Z:\" */ | |
1072 strcat(dirp->path, "*.*"); | |
1073 } else { | |
1074 strcat(dirp->path, "\\*.*"); | |
1075 } | |
1076 | |
1077 dirp->handle = FindFirstFile(dirp->path, &dirp->find_data); | |
1078 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
1079 if (GetLastError() != ERROR_FILE_NOT_FOUND) { | |
1080 free(dirp->path); | |
1081 free(dirp); | |
1082 errno = EACCES; | |
1083 return 0; | |
1084 } | |
1085 } | |
1086 return dirp; | |
1087 } | |
1088 | |
1089 /* parameter dbuf unused on Windows */ | |
1090 | |
1091 struct dirent * | |
1092 os::readdir(DIR *dirp, dirent *dbuf) | |
1093 { | |
1094 assert(dirp != NULL, "just checking"); // hotspot change | |
1095 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
1096 return 0; | |
1097 } | |
1098 | |
1099 strcpy(dirp->dirent.d_name, dirp->find_data.cFileName); | |
1100 | |
1101 if (!FindNextFile(dirp->handle, &dirp->find_data)) { | |
1102 if (GetLastError() == ERROR_INVALID_HANDLE) { | |
1103 errno = EBADF; | |
1104 return 0; | |
1105 } | |
1106 FindClose(dirp->handle); | |
1107 dirp->handle = INVALID_HANDLE_VALUE; | |
1108 } | |
1109 | |
1110 return &dirp->dirent; | |
1111 } | |
1112 | |
1113 int | |
1114 os::closedir(DIR *dirp) | |
1115 { | |
1116 assert(dirp != NULL, "just checking"); // hotspot change | |
1117 if (dirp->handle != INVALID_HANDLE_VALUE) { | |
1118 if (!FindClose(dirp->handle)) { | |
1119 errno = EBADF; | |
1120 return -1; | |
1121 } | |
1122 dirp->handle = INVALID_HANDLE_VALUE; | |
1123 } | |
1124 free(dirp->path); | |
1125 free(dirp); | |
1126 return 0; | |
1127 } | |
1128 | |
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1129 // This must be hard coded because it's the system's temporary |
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1130 // directory not the java application's temp directory, ala java.io.tmpdir. |
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1131 const char* os::get_temp_directory() { |
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1132 static char path_buf[MAX_PATH]; |
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1133 if (GetTempPath(MAX_PATH, path_buf)>0) |
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1134 return path_buf; |
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1135 else{ |
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1136 path_buf[0]='\0'; |
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1137 return path_buf; |
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1138 } |
0 | 1139 } |
1140 | |
691 | 1141 static bool file_exists(const char* filename) { |
1142 if (filename == NULL || strlen(filename) == 0) { | |
1143 return false; | |
1144 } | |
1145 return GetFileAttributes(filename) != INVALID_FILE_ATTRIBUTES; | |
1146 } | |
1147 | |
1148 void os::dll_build_name(char *buffer, size_t buflen, | |
1149 const char* pname, const char* fname) { | |
1150 const size_t pnamelen = pname ? strlen(pname) : 0; | |
1151 const char c = (pnamelen > 0) ? pname[pnamelen-1] : 0; | |
1152 | |
1153 // Quietly truncates on buffer overflow. Should be an error. | |
1154 if (pnamelen + strlen(fname) + 10 > buflen) { | |
1155 *buffer = '\0'; | |
1156 return; | |
1157 } | |
1158 | |
1159 if (pnamelen == 0) { | |
1160 jio_snprintf(buffer, buflen, "%s.dll", fname); | |
1161 } else if (c == ':' || c == '\\') { | |
1162 jio_snprintf(buffer, buflen, "%s%s.dll", pname, fname); | |
1163 } else if (strchr(pname, *os::path_separator()) != NULL) { | |
1164 int n; | |
1165 char** pelements = split_path(pname, &n); | |
1166 for (int i = 0 ; i < n ; i++) { | |
1167 char* path = pelements[i]; | |
1168 // Really shouldn't be NULL, but check can't hurt | |
1169 size_t plen = (path == NULL) ? 0 : strlen(path); | |
1170 if (plen == 0) { | |
1171 continue; // skip the empty path values | |
1172 } | |
1173 const char lastchar = path[plen - 1]; | |
1174 if (lastchar == ':' || lastchar == '\\') { | |
1175 jio_snprintf(buffer, buflen, "%s%s.dll", path, fname); | |
1176 } else { | |
1177 jio_snprintf(buffer, buflen, "%s\\%s.dll", path, fname); | |
1178 } | |
1179 if (file_exists(buffer)) { | |
1180 break; | |
1181 } | |
242 | 1182 } |
691 | 1183 // release the storage |
1184 for (int i = 0 ; i < n ; i++) { | |
1185 if (pelements[i] != NULL) { | |
1186 FREE_C_HEAP_ARRAY(char, pelements[i]); | |
1187 } | |
242 | 1188 } |
691 | 1189 if (pelements != NULL) { |
1190 FREE_C_HEAP_ARRAY(char*, pelements); | |
1191 } | |
1192 } else { | |
1193 jio_snprintf(buffer, buflen, "%s\\%s.dll", pname, fname); | |
1194 } | |
242 | 1195 } |
1196 | |
0 | 1197 // Needs to be in os specific directory because windows requires another |
1198 // header file <direct.h> | |
1199 const char* os::get_current_directory(char *buf, int buflen) { | |
1200 return _getcwd(buf, buflen); | |
1201 } | |
1202 | |
1203 //----------------------------------------------------------- | |
1204 // Helper functions for fatal error handler | |
1205 #ifdef _WIN64 | |
1206 // Helper routine which returns true if address in | |
1207 // within the NTDLL address space. | |
1208 // | |
1209 static bool _addr_in_ntdll( address addr ) | |
1210 { | |
1211 HMODULE hmod; | |
1212 MODULEINFO minfo; | |
1213 | |
1214 hmod = GetModuleHandle("NTDLL.DLL"); | |
1215 if ( hmod == NULL ) return false; | |
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1216 if ( !os::PSApiDll::GetModuleInformation( GetCurrentProcess(), hmod, |
0 | 1217 &minfo, sizeof(MODULEINFO)) ) |
1218 return false; | |
1219 | |
1220 if ( (addr >= minfo.lpBaseOfDll) && | |
1221 (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage))) | |
1222 return true; | |
1223 else | |
1224 return false; | |
1225 } | |
1226 #endif | |
1227 | |
1228 | |
1229 // Enumerate all modules for a given process ID | |
1230 // | |
1231 // Notice that Windows 95/98/Me and Windows NT/2000/XP have | |
1232 // different API for doing this. We use PSAPI.DLL on NT based | |
1233 // Windows and ToolHelp on 95/98/Me. | |
1234 | |
1235 // Callback function that is called by enumerate_modules() on | |
1236 // every DLL module. | |
1237 // Input parameters: | |
1238 // int pid, | |
1239 // char* module_file_name, | |
1240 // address module_base_addr, | |
1241 // unsigned module_size, | |
1242 // void* param | |
1243 typedef int (*EnumModulesCallbackFunc)(int, char *, address, unsigned, void *); | |
1244 | |
1245 // enumerate_modules for Windows NT, using PSAPI | |
1246 static int _enumerate_modules_winnt( int pid, EnumModulesCallbackFunc func, void * param) | |
1247 { | |
1248 HANDLE hProcess ; | |
1249 | |
1250 # define MAX_NUM_MODULES 128 | |
1251 HMODULE modules[MAX_NUM_MODULES]; | |
1252 static char filename[ MAX_PATH ]; | |
1253 int result = 0; | |
1254 | |
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1255 if (!os::PSApiDll::PSApiAvailable()) { |
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1256 return 0; |
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1257 } |
0 | 1258 |
1259 hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, | |
1260 FALSE, pid ) ; | |
1261 if (hProcess == NULL) return 0; | |
1262 | |
1263 DWORD size_needed; | |
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1264 if (!os::PSApiDll::EnumProcessModules(hProcess, modules, |
0 | 1265 sizeof(modules), &size_needed)) { |
1266 CloseHandle( hProcess ); | |
1267 return 0; | |
1268 } | |
1269 | |
1270 // number of modules that are currently loaded | |
1271 int num_modules = size_needed / sizeof(HMODULE); | |
1272 | |
1273 for (int i = 0; i < MIN2(num_modules, MAX_NUM_MODULES); i++) { | |
1274 // Get Full pathname: | |
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1275 if(!os::PSApiDll::GetModuleFileNameEx(hProcess, modules[i], |
0 | 1276 filename, sizeof(filename))) { |
1277 filename[0] = '\0'; | |
1278 } | |
1279 | |
1280 MODULEINFO modinfo; | |
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1281 if (!os::PSApiDll::GetModuleInformation(hProcess, modules[i], |
0 | 1282 &modinfo, sizeof(modinfo))) { |
1283 modinfo.lpBaseOfDll = NULL; | |
1284 modinfo.SizeOfImage = 0; | |
1285 } | |
1286 | |
1287 // Invoke callback function | |
1288 result = func(pid, filename, (address)modinfo.lpBaseOfDll, | |
1289 modinfo.SizeOfImage, param); | |
1290 if (result) break; | |
1291 } | |
1292 | |
1293 CloseHandle( hProcess ) ; | |
1294 return result; | |
1295 } | |
1296 | |
1297 | |
1298 // enumerate_modules for Windows 95/98/ME, using TOOLHELP | |
1299 static int _enumerate_modules_windows( int pid, EnumModulesCallbackFunc func, void *param) | |
1300 { | |
1301 HANDLE hSnapShot ; | |
1302 static MODULEENTRY32 modentry ; | |
1303 int result = 0; | |
1304 | |
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1305 if (!os::Kernel32Dll::HelpToolsAvailable()) { |
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1306 return 0; |
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1307 } |
0 | 1308 |
1309 // Get a handle to a Toolhelp snapshot of the system | |
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1310 hSnapShot = os::Kernel32Dll::CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid ) ; |
0 | 1311 if( hSnapShot == INVALID_HANDLE_VALUE ) { |
1312 return FALSE ; | |
1313 } | |
1314 | |
1315 // iterate through all modules | |
1316 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
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1317 bool not_done = os::Kernel32Dll::Module32First( hSnapShot, &modentry ) != 0; |
0 | 1318 |
1319 while( not_done ) { | |
1320 // invoke the callback | |
1321 result=func(pid, modentry.szExePath, (address)modentry.modBaseAddr, | |
1322 modentry.modBaseSize, param); | |
1323 if (result) break; | |
1324 | |
1325 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
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1326 not_done = os::Kernel32Dll::Module32Next( hSnapShot, &modentry ) != 0; |
0 | 1327 } |
1328 | |
1329 CloseHandle(hSnapShot); | |
1330 return result; | |
1331 } | |
1332 | |
1333 int enumerate_modules( int pid, EnumModulesCallbackFunc func, void * param ) | |
1334 { | |
1335 // Get current process ID if caller doesn't provide it. | |
1336 if (!pid) pid = os::current_process_id(); | |
1337 | |
1338 if (os::win32::is_nt()) return _enumerate_modules_winnt (pid, func, param); | |
1339 else return _enumerate_modules_windows(pid, func, param); | |
1340 } | |
1341 | |
1342 struct _modinfo { | |
1343 address addr; | |
1344 char* full_path; // point to a char buffer | |
1345 int buflen; // size of the buffer | |
1346 address base_addr; | |
1347 }; | |
1348 | |
1349 static int _locate_module_by_addr(int pid, char * mod_fname, address base_addr, | |
1350 unsigned size, void * param) { | |
1351 struct _modinfo *pmod = (struct _modinfo *)param; | |
1352 if (!pmod) return -1; | |
1353 | |
1354 if (base_addr <= pmod->addr && | |
1355 base_addr+size > pmod->addr) { | |
1356 // if a buffer is provided, copy path name to the buffer | |
1357 if (pmod->full_path) { | |
1358 jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname); | |
1359 } | |
1360 pmod->base_addr = base_addr; | |
1361 return 1; | |
1362 } | |
1363 return 0; | |
1364 } | |
1365 | |
1366 bool os::dll_address_to_library_name(address addr, char* buf, | |
1367 int buflen, int* offset) { | |
1368 // NOTE: the reason we don't use SymGetModuleInfo() is it doesn't always | |
1369 // return the full path to the DLL file, sometimes it returns path | |
1370 // to the corresponding PDB file (debug info); sometimes it only | |
1371 // returns partial path, which makes life painful. | |
1372 | |
1373 struct _modinfo mi; | |
1374 mi.addr = addr; | |
1375 mi.full_path = buf; | |
1376 mi.buflen = buflen; | |
1377 int pid = os::current_process_id(); | |
1378 if (enumerate_modules(pid, _locate_module_by_addr, (void *)&mi)) { | |
1379 // buf already contains path name | |
1380 if (offset) *offset = addr - mi.base_addr; | |
1381 return true; | |
1382 } else { | |
1383 if (buf) buf[0] = '\0'; | |
1384 if (offset) *offset = -1; | |
1385 return false; | |
1386 } | |
1387 } | |
1388 | |
1389 bool os::dll_address_to_function_name(address addr, char *buf, | |
1390 int buflen, int *offset) { | |
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1391 if (Decoder::decode(addr, buf, buflen, offset) == Decoder::no_error) { |
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1392 return true; |
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1393 } |
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1394 if (offset != NULL) *offset = -1; |
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1395 if (buf != NULL) buf[0] = '\0'; |
0 | 1396 return false; |
1397 } | |
1398 | |
1399 // save the start and end address of jvm.dll into param[0] and param[1] | |
1400 static int _locate_jvm_dll(int pid, char* mod_fname, address base_addr, | |
1401 unsigned size, void * param) { | |
1402 if (!param) return -1; | |
1403 | |
1404 if (base_addr <= (address)_locate_jvm_dll && | |
1405 base_addr+size > (address)_locate_jvm_dll) { | |
1406 ((address*)param)[0] = base_addr; | |
1407 ((address*)param)[1] = base_addr + size; | |
1408 return 1; | |
1409 } | |
1410 return 0; | |
1411 } | |
1412 | |
1413 address vm_lib_location[2]; // start and end address of jvm.dll | |
1414 | |
1415 // check if addr is inside jvm.dll | |
1416 bool os::address_is_in_vm(address addr) { | |
1417 if (!vm_lib_location[0] || !vm_lib_location[1]) { | |
1418 int pid = os::current_process_id(); | |
1419 if (!enumerate_modules(pid, _locate_jvm_dll, (void *)vm_lib_location)) { | |
1420 assert(false, "Can't find jvm module."); | |
1421 return false; | |
1422 } | |
1423 } | |
1424 | |
1425 return (vm_lib_location[0] <= addr) && (addr < vm_lib_location[1]); | |
1426 } | |
1427 | |
1428 // print module info; param is outputStream* | |
1429 static int _print_module(int pid, char* fname, address base, | |
1430 unsigned size, void* param) { | |
1431 if (!param) return -1; | |
1432 | |
1433 outputStream* st = (outputStream*)param; | |
1434 | |
1435 address end_addr = base + size; | |
1436 st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base, end_addr, fname); | |
1437 return 0; | |
1438 } | |
1439 | |
1440 // Loads .dll/.so and | |
1441 // in case of error it checks if .dll/.so was built for the | |
1442 // same architecture as Hotspot is running on | |
1443 void * os::dll_load(const char *name, char *ebuf, int ebuflen) | |
1444 { | |
1445 void * result = LoadLibrary(name); | |
1446 if (result != NULL) | |
1447 { | |
1448 return result; | |
1449 } | |
1450 | |
1451 long errcode = GetLastError(); | |
1452 if (errcode == ERROR_MOD_NOT_FOUND) { | |
1453 strncpy(ebuf, "Can't find dependent libraries", ebuflen-1); | |
1454 ebuf[ebuflen-1]='\0'; | |
1455 return NULL; | |
1456 } | |
1457 | |
1458 // Parsing dll below | |
1459 // If we can read dll-info and find that dll was built | |
1460 // for an architecture other than Hotspot is running in | |
1461 // - then print to buffer "DLL was built for a different architecture" | |
1462 // else call getLastErrorString to obtain system error message | |
1463 | |
1464 // Read system error message into ebuf | |
1465 // It may or may not be overwritten below (in the for loop and just above) | |
1466 getLastErrorString(ebuf, (size_t) ebuflen); | |
1467 ebuf[ebuflen-1]='\0'; | |
1468 int file_descriptor=::open(name, O_RDONLY | O_BINARY, 0); | |
1469 if (file_descriptor<0) | |
1470 { | |
1471 return NULL; | |
1472 } | |
1473 | |
1474 uint32_t signature_offset; | |
1475 uint16_t lib_arch=0; | |
1476 bool failed_to_get_lib_arch= | |
1477 ( | |
1478 //Go to position 3c in the dll | |
1479 (os::seek_to_file_offset(file_descriptor,IMAGE_FILE_PTR_TO_SIGNATURE)<0) | |
1480 || | |
1481 // Read loacation of signature | |
1482 (sizeof(signature_offset)!= | |
1483 (os::read(file_descriptor, (void*)&signature_offset,sizeof(signature_offset)))) | |
1484 || | |
1485 //Go to COFF File Header in dll | |
1486 //that is located after"signature" (4 bytes long) | |
1487 (os::seek_to_file_offset(file_descriptor, | |
1488 signature_offset+IMAGE_FILE_SIGNATURE_LENGTH)<0) | |
1489 || | |
1490 //Read field that contains code of architecture | |
1491 // that dll was build for | |
1492 (sizeof(lib_arch)!= | |
1493 (os::read(file_descriptor, (void*)&lib_arch,sizeof(lib_arch)))) | |
1494 ); | |
1495 | |
1496 ::close(file_descriptor); | |
1497 if (failed_to_get_lib_arch) | |
1498 { | |
1499 // file i/o error - report getLastErrorString(...) msg | |
1500 return NULL; | |
1501 } | |
1502 | |
1503 typedef struct | |
1504 { | |
1505 uint16_t arch_code; | |
1506 char* arch_name; | |
1507 } arch_t; | |
1508 | |
1509 static const arch_t arch_array[]={ | |
1510 {IMAGE_FILE_MACHINE_I386, (char*)"IA 32"}, | |
1511 {IMAGE_FILE_MACHINE_AMD64, (char*)"AMD 64"}, | |
1512 {IMAGE_FILE_MACHINE_IA64, (char*)"IA 64"} | |
1513 }; | |
1514 #if (defined _M_IA64) | |
1515 static const uint16_t running_arch=IMAGE_FILE_MACHINE_IA64; | |
1516 #elif (defined _M_AMD64) | |
1517 static const uint16_t running_arch=IMAGE_FILE_MACHINE_AMD64; | |
1518 #elif (defined _M_IX86) | |
1519 static const uint16_t running_arch=IMAGE_FILE_MACHINE_I386; | |
1520 #else | |
1521 #error Method os::dll_load requires that one of following \ | |
1522 is defined :_M_IA64,_M_AMD64 or _M_IX86 | |
1523 #endif | |
1524 | |
1525 | |
1526 // Obtain a string for printf operation | |
1527 // lib_arch_str shall contain string what platform this .dll was built for | |
1528 // running_arch_str shall string contain what platform Hotspot was built for | |
1529 char *running_arch_str=NULL,*lib_arch_str=NULL; | |
1530 for (unsigned int i=0;i<ARRAY_SIZE(arch_array);i++) | |
1531 { | |
1532 if (lib_arch==arch_array[i].arch_code) | |
1533 lib_arch_str=arch_array[i].arch_name; | |
1534 if (running_arch==arch_array[i].arch_code) | |
1535 running_arch_str=arch_array[i].arch_name; | |
1536 } | |
1537 | |
1538 assert(running_arch_str, | |
1539 "Didn't find runing architecture code in arch_array"); | |
1540 | |
1541 // If the architure is right | |
1542 // but some other error took place - report getLastErrorString(...) msg | |
1543 if (lib_arch == running_arch) | |
1544 { | |
1545 return NULL; | |
1546 } | |
1547 | |
1548 if (lib_arch_str!=NULL) | |
1549 { | |
1550 ::_snprintf(ebuf, ebuflen-1, | |
1551 "Can't load %s-bit .dll on a %s-bit platform", | |
1552 lib_arch_str,running_arch_str); | |
1553 } | |
1554 else | |
1555 { | |
1556 // don't know what architecture this dll was build for | |
1557 ::_snprintf(ebuf, ebuflen-1, | |
1558 "Can't load this .dll (machine code=0x%x) on a %s-bit platform", | |
1559 lib_arch,running_arch_str); | |
1560 } | |
1561 | |
1562 return NULL; | |
1563 } | |
1564 | |
1565 | |
1566 void os::print_dll_info(outputStream *st) { | |
1567 int pid = os::current_process_id(); | |
1568 st->print_cr("Dynamic libraries:"); | |
1569 enumerate_modules(pid, _print_module, (void *)st); | |
1570 } | |
1571 | |
1572 void os::print_os_info(outputStream* st) { | |
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1573 st->print("OS:"); |
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1574 |
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1575 OSVERSIONINFOEX osvi; |
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1576 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX)); |
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1577 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
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1578 |
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1579 if (!GetVersionEx((OSVERSIONINFO *)&osvi)) { |
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1580 st->print_cr("N/A"); |
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1581 return; |
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1582 } |
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1583 |
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1584 int os_vers = osvi.dwMajorVersion * 1000 + osvi.dwMinorVersion; |
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1585 if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) { |
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1586 switch (os_vers) { |
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1587 case 3051: st->print(" Windows NT 3.51"); break; |
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1588 case 4000: st->print(" Windows NT 4.0"); break; |
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1589 case 5000: st->print(" Windows 2000"); break; |
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1590 case 5001: st->print(" Windows XP"); break; |
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1591 case 5002: |
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1592 case 6000: |
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1593 case 6001: { |
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1594 // Retrieve SYSTEM_INFO from GetNativeSystemInfo call so that we could |
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1595 // find out whether we are running on 64 bit processor or not. |
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1596 SYSTEM_INFO si; |
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1597 ZeroMemory(&si, sizeof(SYSTEM_INFO)); |
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1598 if (!os::Kernel32Dll::GetNativeSystemInfoAvailable()){ |
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1599 GetSystemInfo(&si); |
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1600 } else { |
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1601 os::Kernel32Dll::GetNativeSystemInfo(&si); |
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1602 } |
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1603 if (os_vers == 5002) { |
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1604 if (osvi.wProductType == VER_NT_WORKSTATION && |
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1605 si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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1606 st->print(" Windows XP x64 Edition"); |
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1607 else |
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1608 st->print(" Windows Server 2003 family"); |
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1609 } else if (os_vers == 6000) { |
273
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1610 if (osvi.wProductType == VER_NT_WORKSTATION) |
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1611 st->print(" Windows Vista"); |
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1612 else |
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1613 st->print(" Windows Server 2008"); |
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1614 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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1615 st->print(" , 64 bit"); |
962
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|
1616 } else if (os_vers == 6001) { |
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|
1617 if (osvi.wProductType == VER_NT_WORKSTATION) { |
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|
1618 st->print(" Windows 7"); |
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|
1619 } else { |
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|
1620 // Unrecognized windows, print out its major and minor versions |
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|
1621 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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|
1622 } |
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|
1623 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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|
1624 st->print(" , 64 bit"); |
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|
1625 } else { // future os |
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|
1626 // Unrecognized windows, print out its major and minor versions |
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|
1627 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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|
1628 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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|
1629 st->print(" , 64 bit"); |
273
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1630 } |
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1631 break; |
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|
1632 } |
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1633 default: // future windows, print out its major and minor versions |
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1634 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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1635 } |
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1636 } else { |
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1637 switch (os_vers) { |
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1638 case 4000: st->print(" Windows 95"); break; |
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1639 case 4010: st->print(" Windows 98"); break; |
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1640 case 4090: st->print(" Windows Me"); break; |
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1641 default: // future windows, print out its major and minor versions |
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1642 st->print(" Windows %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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1643 } |
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|
1644 } |
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|
1645 st->print(" Build %d", osvi.dwBuildNumber); |
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1646 st->print(" %s", osvi.szCSDVersion); // service pack |
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1647 st->cr(); |
0 | 1648 } |
1649 | |
1650 void os::print_memory_info(outputStream* st) { | |
1651 st->print("Memory:"); | |
1652 st->print(" %dk page", os::vm_page_size()>>10); | |
1653 | |
877
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|
1654 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
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1655 // value if total memory is larger than 4GB |
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|
1656 MEMORYSTATUSEX ms; |
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|
1657 ms.dwLength = sizeof(ms); |
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|
1658 GlobalMemoryStatusEx(&ms); |
0 | 1659 |
1660 st->print(", physical %uk", os::physical_memory() >> 10); | |
1661 st->print("(%uk free)", os::available_memory() >> 10); | |
1662 | |
877
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|
1663 st->print(", swap %uk", ms.ullTotalPageFile >> 10); |
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|
1664 st->print("(%uk free)", ms.ullAvailPageFile >> 10); |
0 | 1665 st->cr(); |
1666 } | |
1667 | |
1668 void os::print_siginfo(outputStream *st, void *siginfo) { | |
1669 EXCEPTION_RECORD* er = (EXCEPTION_RECORD*)siginfo; | |
1670 st->print("siginfo:"); | |
1671 st->print(" ExceptionCode=0x%x", er->ExceptionCode); | |
1672 | |
1673 if (er->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
1674 er->NumberParameters >= 2) { | |
1675 switch (er->ExceptionInformation[0]) { | |
1676 case 0: st->print(", reading address"); break; | |
1677 case 1: st->print(", writing address"); break; | |
1678 default: st->print(", ExceptionInformation=" INTPTR_FORMAT, | |
1679 er->ExceptionInformation[0]); | |
1680 } | |
1681 st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]); | |
1682 } else if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR && | |
1683 er->NumberParameters >= 2 && UseSharedSpaces) { | |
1684 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
1685 if (mapinfo->is_in_shared_space((void*)er->ExceptionInformation[1])) { | |
1686 st->print("\n\nError accessing class data sharing archive." \ | |
1687 " Mapped file inaccessible during execution, " \ | |
1688 " possible disk/network problem."); | |
1689 } | |
1690 } else { | |
1691 int num = er->NumberParameters; | |
1692 if (num > 0) { | |
1693 st->print(", ExceptionInformation="); | |
1694 for (int i = 0; i < num; i++) { | |
1695 st->print(INTPTR_FORMAT " ", er->ExceptionInformation[i]); | |
1696 } | |
1697 } | |
1698 } | |
1699 st->cr(); | |
1700 } | |
1701 | |
1702 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
1703 // do nothing | |
1704 } | |
1705 | |
1706 static char saved_jvm_path[MAX_PATH] = {0}; | |
1707 | |
1708 // Find the full path to the current module, jvm.dll or jvm_g.dll | |
1709 void os::jvm_path(char *buf, jint buflen) { | |
1710 // Error checking. | |
1711 if (buflen < MAX_PATH) { | |
1712 assert(false, "must use a large-enough buffer"); | |
1713 buf[0] = '\0'; | |
1714 return; | |
1715 } | |
1716 // Lazy resolve the path to current module. | |
1717 if (saved_jvm_path[0] != 0) { | |
1718 strcpy(buf, saved_jvm_path); | |
1719 return; | |
1720 } | |
1721 | |
1985 | 1722 buf[0] = '\0'; |
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|
1723 if (Arguments::created_by_gamma_launcher()) { |
1985 | 1724 // Support for the gamma launcher. Check for an |
2027
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|
1725 // JAVA_HOME environment variable |
1985 | 1726 // and fix up the path so it looks like |
1727 // libjvm.so is installed there (append a fake suffix | |
1728 // hotspot/libjvm.so). | |
2027
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diff
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|
1729 char* java_home_var = ::getenv("JAVA_HOME"); |
1985 | 1730 if (java_home_var != NULL && java_home_var[0] != 0) { |
1731 | |
1732 strncpy(buf, java_home_var, buflen); | |
1733 | |
1734 // determine if this is a legacy image or modules image | |
1735 // modules image doesn't have "jre" subdirectory | |
1736 size_t len = strlen(buf); | |
1737 char* jrebin_p = buf + len; | |
1738 jio_snprintf(jrebin_p, buflen-len, "\\jre\\bin\\"); | |
1739 if (0 != _access(buf, 0)) { | |
1740 jio_snprintf(jrebin_p, buflen-len, "\\bin\\"); | |
1741 } | |
1742 len = strlen(buf); | |
1743 jio_snprintf(buf + len, buflen-len, "hotspot\\jvm.dll"); | |
1744 } | |
1745 } | |
1746 | |
1747 if(buf[0] == '\0') { | |
0 | 1748 GetModuleFileName(vm_lib_handle, buf, buflen); |
1985 | 1749 } |
0 | 1750 strcpy(saved_jvm_path, buf); |
1751 } | |
1752 | |
1753 | |
1754 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
1755 #ifndef _WIN64 | |
1756 st->print("_"); | |
1757 #endif | |
1758 } | |
1759 | |
1760 | |
1761 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
1762 #ifndef _WIN64 | |
1763 st->print("@%d", args_size * sizeof(int)); | |
1764 #endif | |
1765 } | |
1766 | |
1980
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1767 // This method is a copy of JDK's sysGetLastErrorString |
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|
1768 // from src/windows/hpi/src/system_md.c |
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|
1769 |
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|
1770 size_t os::lasterror(char *buf, size_t len) { |
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|
1771 long errval; |
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|
1772 |
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|
1773 if ((errval = GetLastError()) != 0) { |
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|
1774 /* DOS error */ |
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|
1775 int n = (int)FormatMessage( |
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|
1776 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, |
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|
1777 NULL, |
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|
1778 errval, |
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|
1779 0, |
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|
1780 buf, |
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|
1781 (DWORD)len, |
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diff
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|
1782 NULL); |
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diff
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|
1783 if (n > 3) { |
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|
1784 /* Drop final '.', CR, LF */ |
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|
1785 if (buf[n - 1] == '\n') n--; |
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|
1786 if (buf[n - 1] == '\r') n--; |
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diff
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|
1787 if (buf[n - 1] == '.') n--; |
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|
1788 buf[n] = '\0'; |
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diff
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|
1789 } |
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diff
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|
1790 return n; |
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diff
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|
1791 } |
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|
1792 |
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diff
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|
1793 if (errno != 0) { |
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|
1794 /* C runtime error that has no corresponding DOS error code */ |
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diff
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|
1795 const char *s = strerror(errno); |
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diff
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|
1796 size_t n = strlen(s); |
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|
1797 if (n >= len) n = len - 1; |
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diff
changeset
|
1798 strncpy(buf, s, n); |
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diff
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|
1799 buf[n] = '\0'; |
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diff
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|
1800 return n; |
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diff
changeset
|
1801 } |
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
1802 return 0; |
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diff
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|
1803 } |
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|
1804 |
0 | 1805 // sun.misc.Signal |
1806 // NOTE that this is a workaround for an apparent kernel bug where if | |
1807 // a signal handler for SIGBREAK is installed then that signal handler | |
1808 // takes priority over the console control handler for CTRL_CLOSE_EVENT. | |
1809 // See bug 4416763. | |
1810 static void (*sigbreakHandler)(int) = NULL; | |
1811 | |
1812 static void UserHandler(int sig, void *siginfo, void *context) { | |
1813 os::signal_notify(sig); | |
1814 // We need to reinstate the signal handler each time... | |
1815 os::signal(sig, (void*)UserHandler); | |
1816 } | |
1817 | |
1818 void* os::user_handler() { | |
1819 return (void*) UserHandler; | |
1820 } | |
1821 | |
1822 void* os::signal(int signal_number, void* handler) { | |
1823 if ((signal_number == SIGBREAK) && (!ReduceSignalUsage)) { | |
1824 void (*oldHandler)(int) = sigbreakHandler; | |
1825 sigbreakHandler = (void (*)(int)) handler; | |
1826 return (void*) oldHandler; | |
1827 } else { | |
1828 return (void*)::signal(signal_number, (void (*)(int))handler); | |
1829 } | |
1830 } | |
1831 | |
1832 void os::signal_raise(int signal_number) { | |
1833 raise(signal_number); | |
1834 } | |
1835 | |
1836 // The Win32 C runtime library maps all console control events other than ^C | |
1837 // into SIGBREAK, which makes it impossible to distinguish ^BREAK from close, | |
1838 // logoff, and shutdown events. We therefore install our own console handler | |
1839 // that raises SIGTERM for the latter cases. | |
1840 // | |
1841 static BOOL WINAPI consoleHandler(DWORD event) { | |
1842 switch(event) { | |
1843 case CTRL_C_EVENT: | |
1844 if (is_error_reported()) { | |
1845 // Ctrl-C is pressed during error reporting, likely because the error | |
1846 // handler fails to abort. Let VM die immediately. | |
1847 os::die(); | |
1848 } | |
1849 | |
1850 os::signal_raise(SIGINT); | |
1851 return TRUE; | |
1852 break; | |
1853 case CTRL_BREAK_EVENT: | |
1854 if (sigbreakHandler != NULL) { | |
1855 (*sigbreakHandler)(SIGBREAK); | |
1856 } | |
1857 return TRUE; | |
1858 break; | |
1859 case CTRL_CLOSE_EVENT: | |
1860 case CTRL_LOGOFF_EVENT: | |
1861 case CTRL_SHUTDOWN_EVENT: | |
1862 os::signal_raise(SIGTERM); | |
1863 return TRUE; | |
1864 break; | |
1865 default: | |
1866 break; | |
1867 } | |
1868 return FALSE; | |
1869 } | |
1870 | |
1871 /* | |
1872 * The following code is moved from os.cpp for making this | |
1873 * code platform specific, which it is by its very nature. | |
1874 */ | |
1875 | |
1876 // Return maximum OS signal used + 1 for internal use only | |
1877 // Used as exit signal for signal_thread | |
1878 int os::sigexitnum_pd(){ | |
1879 return NSIG; | |
1880 } | |
1881 | |
1882 // a counter for each possible signal value, including signal_thread exit signal | |
1883 static volatile jint pending_signals[NSIG+1] = { 0 }; | |
1884 static HANDLE sig_sem; | |
1885 | |
1886 void os::signal_init_pd() { | |
1887 // Initialize signal structures | |
1888 memset((void*)pending_signals, 0, sizeof(pending_signals)); | |
1889 | |
1890 sig_sem = ::CreateSemaphore(NULL, 0, NSIG+1, NULL); | |
1891 | |
1892 // Programs embedding the VM do not want it to attempt to receive | |
1893 // events like CTRL_LOGOFF_EVENT, which are used to implement the | |
1894 // shutdown hooks mechanism introduced in 1.3. For example, when | |
1895 // the VM is run as part of a Windows NT service (i.e., a servlet | |
1896 // engine in a web server), the correct behavior is for any console | |
1897 // control handler to return FALSE, not TRUE, because the OS's | |
1898 // "final" handler for such events allows the process to continue if | |
1899 // it is a service (while terminating it if it is not a service). | |
1900 // To make this behavior uniform and the mechanism simpler, we | |
1901 // completely disable the VM's usage of these console events if -Xrs | |
1902 // (=ReduceSignalUsage) is specified. This means, for example, that | |
1903 // the CTRL-BREAK thread dump mechanism is also disabled in this | |
1904 // case. See bugs 4323062, 4345157, and related bugs. | |
1905 | |
1906 if (!ReduceSignalUsage) { | |
1907 // Add a CTRL-C handler | |
1908 SetConsoleCtrlHandler(consoleHandler, TRUE); | |
1909 } | |
1910 } | |
1911 | |
1912 void os::signal_notify(int signal_number) { | |
1913 BOOL ret; | |
1914 | |
1915 Atomic::inc(&pending_signals[signal_number]); | |
1916 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); | |
1917 assert(ret != 0, "ReleaseSemaphore() failed"); | |
1918 } | |
1919 | |
1920 static int check_pending_signals(bool wait_for_signal) { | |
1921 DWORD ret; | |
1922 while (true) { | |
1923 for (int i = 0; i < NSIG + 1; i++) { | |
1924 jint n = pending_signals[i]; | |
1925 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
1926 return i; | |
1927 } | |
1928 } | |
1929 if (!wait_for_signal) { | |
1930 return -1; | |
1931 } | |
1932 | |
1933 JavaThread *thread = JavaThread::current(); | |
1934 | |
1935 ThreadBlockInVM tbivm(thread); | |
1936 | |
1937 bool threadIsSuspended; | |
1938 do { | |
1939 thread->set_suspend_equivalent(); | |
1940 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
1941 ret = ::WaitForSingleObject(sig_sem, INFINITE); | |
1942 assert(ret == WAIT_OBJECT_0, "WaitForSingleObject() failed"); | |
1943 | |
1944 // were we externally suspended while we were waiting? | |
1945 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
1946 if (threadIsSuspended) { | |
1947 // | |
1948 // The semaphore has been incremented, but while we were waiting | |
1949 // another thread suspended us. We don't want to continue running | |
1950 // while suspended because that would surprise the thread that | |
1951 // suspended us. | |
1952 // | |
1953 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); | |
1954 assert(ret != 0, "ReleaseSemaphore() failed"); | |
1955 | |
1956 thread->java_suspend_self(); | |
1957 } | |
1958 } while (threadIsSuspended); | |
1959 } | |
1960 } | |
1961 | |
1962 int os::signal_lookup() { | |
1963 return check_pending_signals(false); | |
1964 } | |
1965 | |
1966 int os::signal_wait() { | |
1967 return check_pending_signals(true); | |
1968 } | |
1969 | |
1970 // Implicit OS exception handling | |
1971 | |
1972 LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo, address handler) { | |
1973 JavaThread* thread = JavaThread::current(); | |
1974 // Save pc in thread | |
1975 #ifdef _M_IA64 | |
1976 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->StIIP); | |
1977 // Set pc to handler | |
1978 exceptionInfo->ContextRecord->StIIP = (DWORD64)handler; | |
1979 #elif _M_AMD64 | |
1980 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Rip); | |
1981 // Set pc to handler | |
1982 exceptionInfo->ContextRecord->Rip = (DWORD64)handler; | |
1983 #else | |
1984 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Eip); | |
1985 // Set pc to handler | |
1986 exceptionInfo->ContextRecord->Eip = (LONG)handler; | |
1987 #endif | |
1988 | |
1989 // Continue the execution | |
1990 return EXCEPTION_CONTINUE_EXECUTION; | |
1991 } | |
1992 | |
1993 | |
1994 // Used for PostMortemDump | |
1995 extern "C" void safepoints(); | |
1996 extern "C" void find(int x); | |
1997 extern "C" void events(); | |
1998 | |
1999 // According to Windows API documentation, an illegal instruction sequence should generate | |
2000 // the 0xC000001C exception code. However, real world experience shows that occasionnaly | |
2001 // the execution of an illegal instruction can generate the exception code 0xC000001E. This | |
2002 // seems to be an undocumented feature of Win NT 4.0 (and probably other Windows systems). | |
2003 | |
2004 #define EXCEPTION_ILLEGAL_INSTRUCTION_2 0xC000001E | |
2005 | |
2006 // From "Execution Protection in the Windows Operating System" draft 0.35 | |
2007 // Once a system header becomes available, the "real" define should be | |
2008 // included or copied here. | |
2009 #define EXCEPTION_INFO_EXEC_VIOLATION 0x08 | |
2010 | |
2011 #define def_excpt(val) #val, val | |
2012 | |
2013 struct siglabel { | |
2014 char *name; | |
2015 int number; | |
2016 }; | |
2017 | |
2068
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2018 // All Visual C++ exceptions thrown from code generated by the Microsoft Visual |
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2019 // C++ compiler contain this error code. Because this is a compiler-generated |
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2020 // error, the code is not listed in the Win32 API header files. |
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2021 // The code is actually a cryptic mnemonic device, with the initial "E" |
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2022 // standing for "exception" and the final 3 bytes (0x6D7363) representing the |
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2023 // ASCII values of "msc". |
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2024 |
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2025 #define EXCEPTION_UNCAUGHT_CXX_EXCEPTION 0xE06D7363 |
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2026 |
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2027 |
0 | 2028 struct siglabel exceptlabels[] = { |
2029 def_excpt(EXCEPTION_ACCESS_VIOLATION), | |
2030 def_excpt(EXCEPTION_DATATYPE_MISALIGNMENT), | |
2031 def_excpt(EXCEPTION_BREAKPOINT), | |
2032 def_excpt(EXCEPTION_SINGLE_STEP), | |
2033 def_excpt(EXCEPTION_ARRAY_BOUNDS_EXCEEDED), | |
2034 def_excpt(EXCEPTION_FLT_DENORMAL_OPERAND), | |
2035 def_excpt(EXCEPTION_FLT_DIVIDE_BY_ZERO), | |
2036 def_excpt(EXCEPTION_FLT_INEXACT_RESULT), | |
2037 def_excpt(EXCEPTION_FLT_INVALID_OPERATION), | |
2038 def_excpt(EXCEPTION_FLT_OVERFLOW), | |
2039 def_excpt(EXCEPTION_FLT_STACK_CHECK), | |
2040 def_excpt(EXCEPTION_FLT_UNDERFLOW), | |
2041 def_excpt(EXCEPTION_INT_DIVIDE_BY_ZERO), | |
2042 def_excpt(EXCEPTION_INT_OVERFLOW), | |
2043 def_excpt(EXCEPTION_PRIV_INSTRUCTION), | |
2044 def_excpt(EXCEPTION_IN_PAGE_ERROR), | |
2045 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION), | |
2046 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION_2), | |
2047 def_excpt(EXCEPTION_NONCONTINUABLE_EXCEPTION), | |
2048 def_excpt(EXCEPTION_STACK_OVERFLOW), | |
2049 def_excpt(EXCEPTION_INVALID_DISPOSITION), | |
2050 def_excpt(EXCEPTION_GUARD_PAGE), | |
2051 def_excpt(EXCEPTION_INVALID_HANDLE), | |
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2052 def_excpt(EXCEPTION_UNCAUGHT_CXX_EXCEPTION), |
0 | 2053 NULL, 0 |
2054 }; | |
2055 | |
2056 const char* os::exception_name(int exception_code, char *buf, size_t size) { | |
2057 for (int i = 0; exceptlabels[i].name != NULL; i++) { | |
2058 if (exceptlabels[i].number == exception_code) { | |
2059 jio_snprintf(buf, size, "%s", exceptlabels[i].name); | |
2060 return buf; | |
2061 } | |
2062 } | |
2063 | |
2064 return NULL; | |
2065 } | |
2066 | |
2067 //----------------------------------------------------------------------------- | |
2068 LONG Handle_IDiv_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2069 // handle exception caused by idiv; should only happen for -MinInt/-1 | |
2070 // (division by zero is handled explicitly) | |
2071 #ifdef _M_IA64 | |
2072 assert(0, "Fix Handle_IDiv_Exception"); | |
2073 #elif _M_AMD64 | |
2074 PCONTEXT ctx = exceptionInfo->ContextRecord; | |
2075 address pc = (address)ctx->Rip; | |
2076 NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc)); | |
2077 assert(pc[0] == 0xF7, "not an idiv opcode"); | |
2078 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); | |
2079 assert(ctx->Rax == min_jint, "unexpected idiv exception"); | |
2080 // set correct result values and continue after idiv instruction | |
2081 ctx->Rip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes | |
2082 ctx->Rax = (DWORD)min_jint; // result | |
2083 ctx->Rdx = (DWORD)0; // remainder | |
2084 // Continue the execution | |
2085 #else | |
2086 PCONTEXT ctx = exceptionInfo->ContextRecord; | |
2087 address pc = (address)ctx->Eip; | |
2088 NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc)); | |
2089 assert(pc[0] == 0xF7, "not an idiv opcode"); | |
2090 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); | |
2091 assert(ctx->Eax == min_jint, "unexpected idiv exception"); | |
2092 // set correct result values and continue after idiv instruction | |
2093 ctx->Eip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes | |
2094 ctx->Eax = (DWORD)min_jint; // result | |
2095 ctx->Edx = (DWORD)0; // remainder | |
2096 // Continue the execution | |
2097 #endif | |
2098 return EXCEPTION_CONTINUE_EXECUTION; | |
2099 } | |
2100 | |
2101 #ifndef _WIN64 | |
2102 //----------------------------------------------------------------------------- | |
2103 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
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2104 // handle exception caused by native method modifying control word |
0 | 2105 PCONTEXT ctx = exceptionInfo->ContextRecord; |
2106 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2107 | |
2108 switch (exception_code) { | |
2109 case EXCEPTION_FLT_DENORMAL_OPERAND: | |
2110 case EXCEPTION_FLT_DIVIDE_BY_ZERO: | |
2111 case EXCEPTION_FLT_INEXACT_RESULT: | |
2112 case EXCEPTION_FLT_INVALID_OPERATION: | |
2113 case EXCEPTION_FLT_OVERFLOW: | |
2114 case EXCEPTION_FLT_STACK_CHECK: | |
2115 case EXCEPTION_FLT_UNDERFLOW: | |
2116 jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std()); | |
2117 if (fp_control_word != ctx->FloatSave.ControlWord) { | |
2118 // Restore FPCW and mask out FLT exceptions | |
2119 ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0; | |
2120 // Mask out pending FLT exceptions | |
2121 ctx->FloatSave.StatusWord &= 0xffffff00; | |
2122 return EXCEPTION_CONTINUE_EXECUTION; | |
2123 } | |
2124 } | |
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2125 |
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2126 if (prev_uef_handler != NULL) { |
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2127 // We didn't handle this exception so pass it to the previous |
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2128 // UnhandledExceptionFilter. |
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2129 return (prev_uef_handler)(exceptionInfo); |
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2130 } |
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2131 |
0 | 2132 return EXCEPTION_CONTINUE_SEARCH; |
2133 } | |
2134 #else //_WIN64 | |
2135 /* | |
2136 On Windows, the mxcsr control bits are non-volatile across calls | |
2137 See also CR 6192333 | |
2138 If EXCEPTION_FLT_* happened after some native method modified | |
2139 mxcsr - it is not a jvm fault. | |
2140 However should we decide to restore of mxcsr after a faulty | |
2141 native method we can uncomment following code | |
2142 jint MxCsr = INITIAL_MXCSR; | |
2143 // we can't use StubRoutines::addr_mxcsr_std() | |
2144 // because in Win64 mxcsr is not saved there | |
2145 if (MxCsr != ctx->MxCsr) { | |
2146 ctx->MxCsr = MxCsr; | |
2147 return EXCEPTION_CONTINUE_EXECUTION; | |
2148 } | |
2149 | |
2150 */ | |
2151 #endif //_WIN64 | |
2152 | |
2153 | |
2154 // Fatal error reporting is single threaded so we can make this a | |
2155 // static and preallocated. If it's more than MAX_PATH silently ignore | |
2156 // it. | |
2157 static char saved_error_file[MAX_PATH] = {0}; | |
2158 | |
2159 void os::set_error_file(const char *logfile) { | |
2160 if (strlen(logfile) <= MAX_PATH) { | |
2161 strncpy(saved_error_file, logfile, MAX_PATH); | |
2162 } | |
2163 } | |
2164 | |
2165 static inline void report_error(Thread* t, DWORD exception_code, | |
2166 address addr, void* siginfo, void* context) { | |
2167 VMError err(t, exception_code, addr, siginfo, context); | |
2168 err.report_and_die(); | |
2169 | |
2170 // If UseOsErrorReporting, this will return here and save the error file | |
2171 // somewhere where we can find it in the minidump. | |
2172 } | |
2173 | |
2174 //----------------------------------------------------------------------------- | |
2175 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2176 if (InterceptOSException) return EXCEPTION_CONTINUE_SEARCH; | |
2177 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2178 #ifdef _M_IA64 | |
2179 address pc = (address) exceptionInfo->ContextRecord->StIIP; | |
2180 #elif _M_AMD64 | |
2181 address pc = (address) exceptionInfo->ContextRecord->Rip; | |
2182 #else | |
2183 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
2184 #endif | |
2185 Thread* t = ThreadLocalStorage::get_thread_slow(); // slow & steady | |
2186 | |
2187 #ifndef _WIN64 | |
2188 // Execution protection violation - win32 running on AMD64 only | |
2189 // Handled first to avoid misdiagnosis as a "normal" access violation; | |
2190 // This is safe to do because we have a new/unique ExceptionInformation | |
2191 // code for this condition. | |
2192 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2193 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2194 int exception_subcode = (int) exceptionRecord->ExceptionInformation[0]; | |
2195 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2196 | |
2197 if (exception_subcode == EXCEPTION_INFO_EXEC_VIOLATION) { | |
2198 int page_size = os::vm_page_size(); | |
2199 | |
2200 // Make sure the pc and the faulting address are sane. | |
2201 // | |
2202 // If an instruction spans a page boundary, and the page containing | |
2203 // the beginning of the instruction is executable but the following | |
2204 // page is not, the pc and the faulting address might be slightly | |
2205 // different - we still want to unguard the 2nd page in this case. | |
2206 // | |
2207 // 15 bytes seems to be a (very) safe value for max instruction size. | |
2208 bool pc_is_near_addr = | |
2209 (pointer_delta((void*) addr, (void*) pc, sizeof(char)) < 15); | |
2210 bool instr_spans_page_boundary = | |
2211 (align_size_down((intptr_t) pc ^ (intptr_t) addr, | |
2212 (intptr_t) page_size) > 0); | |
2213 | |
2214 if (pc == addr || (pc_is_near_addr && instr_spans_page_boundary)) { | |
2215 static volatile address last_addr = | |
2216 (address) os::non_memory_address_word(); | |
2217 | |
2218 // In conservative mode, don't unguard unless the address is in the VM | |
2219 if (UnguardOnExecutionViolation > 0 && addr != last_addr && | |
2220 (UnguardOnExecutionViolation > 1 || os::address_is_in_vm(addr))) { | |
2221 | |
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2222 // Set memory to RWX and retry |
0 | 2223 address page_start = |
2224 (address) align_size_down((intptr_t) addr, (intptr_t) page_size); | |
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2225 bool res = os::protect_memory((char*) page_start, page_size, |
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2226 os::MEM_PROT_RWX); |
0 | 2227 |
2228 if (PrintMiscellaneous && Verbose) { | |
2229 char buf[256]; | |
2230 jio_snprintf(buf, sizeof(buf), "Execution protection violation " | |
2231 "at " INTPTR_FORMAT | |
2232 ", unguarding " INTPTR_FORMAT ": %s", addr, | |
2233 page_start, (res ? "success" : strerror(errno))); | |
2234 tty->print_raw_cr(buf); | |
2235 } | |
2236 | |
2237 // Set last_addr so if we fault again at the same address, we don't | |
2238 // end up in an endless loop. | |
2239 // | |
2240 // There are two potential complications here. Two threads trapping | |
2241 // at the same address at the same time could cause one of the | |
2242 // threads to think it already unguarded, and abort the VM. Likely | |
2243 // very rare. | |
2244 // | |
2245 // The other race involves two threads alternately trapping at | |
2246 // different addresses and failing to unguard the page, resulting in | |
2247 // an endless loop. This condition is probably even more unlikely | |
2248 // than the first. | |
2249 // | |
2250 // Although both cases could be avoided by using locks or thread | |
2251 // local last_addr, these solutions are unnecessary complication: | |
2252 // this handler is a best-effort safety net, not a complete solution. | |
2253 // It is disabled by default and should only be used as a workaround | |
2254 // in case we missed any no-execute-unsafe VM code. | |
2255 | |
2256 last_addr = addr; | |
2257 | |
2258 return EXCEPTION_CONTINUE_EXECUTION; | |
2259 } | |
2260 } | |
2261 | |
2262 // Last unguard failed or not unguarding | |
2263 tty->print_raw_cr("Execution protection violation"); | |
2264 report_error(t, exception_code, addr, exceptionInfo->ExceptionRecord, | |
2265 exceptionInfo->ContextRecord); | |
2266 return EXCEPTION_CONTINUE_SEARCH; | |
2267 } | |
2268 } | |
2269 #endif // _WIN64 | |
2270 | |
2271 // Check to see if we caught the safepoint code in the | |
2272 // process of write protecting the memory serialization page. | |
2273 // It write enables the page immediately after protecting it | |
2274 // so just return. | |
2275 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
2276 JavaThread* thread = (JavaThread*) t; | |
2277 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2278 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2279 if ( os::is_memory_serialize_page(thread, addr) ) { | |
2280 // Block current thread until the memory serialize page permission restored. | |
2281 os::block_on_serialize_page_trap(); | |
2282 return EXCEPTION_CONTINUE_EXECUTION; | |
2283 } | |
2284 } | |
2285 | |
2286 if (t != NULL && t->is_Java_thread()) { | |
2287 JavaThread* thread = (JavaThread*) t; | |
2288 bool in_java = thread->thread_state() == _thread_in_Java; | |
2289 | |
2290 // Handle potential stack overflows up front. | |
2291 if (exception_code == EXCEPTION_STACK_OVERFLOW) { | |
2292 if (os::uses_stack_guard_pages()) { | |
2293 #ifdef _M_IA64 | |
2294 // | |
2295 // If it's a legal stack address continue, Windows will map it in. | |
2296 // | |
2297 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2298 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2299 if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) | |
2300 return EXCEPTION_CONTINUE_EXECUTION; | |
2301 | |
2302 // The register save area is the same size as the memory stack | |
2303 // and starts at the page just above the start of the memory stack. | |
2304 // If we get a fault in this area, we've run out of register | |
2305 // stack. If we are in java, try throwing a stack overflow exception. | |
2306 if (addr > thread->stack_base() && | |
2307 addr <= (thread->stack_base()+thread->stack_size()) ) { | |
2308 char buf[256]; | |
2309 jio_snprintf(buf, sizeof(buf), | |
2310 "Register stack overflow, addr:%p, stack_base:%p\n", | |
2311 addr, thread->stack_base() ); | |
2312 tty->print_raw_cr(buf); | |
2313 // If not in java code, return and hope for the best. | |
2314 return in_java ? Handle_Exception(exceptionInfo, | |
2315 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) | |
2316 : EXCEPTION_CONTINUE_EXECUTION; | |
2317 } | |
2318 #endif | |
2319 if (thread->stack_yellow_zone_enabled()) { | |
2320 // Yellow zone violation. The o/s has unprotected the first yellow | |
2321 // zone page for us. Note: must call disable_stack_yellow_zone to | |
2322 // update the enabled status, even if the zone contains only one page. | |
2323 thread->disable_stack_yellow_zone(); | |
2324 // If not in java code, return and hope for the best. | |
2325 return in_java ? Handle_Exception(exceptionInfo, | |
2326 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) | |
2327 : EXCEPTION_CONTINUE_EXECUTION; | |
2328 } else { | |
2329 // Fatal red zone violation. | |
2330 thread->disable_stack_red_zone(); | |
2331 tty->print_raw_cr("An unrecoverable stack overflow has occurred."); | |
2332 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2333 exceptionInfo->ContextRecord); | |
2334 return EXCEPTION_CONTINUE_SEARCH; | |
2335 } | |
2336 } else if (in_java) { | |
2337 // JVM-managed guard pages cannot be used on win95/98. The o/s provides | |
2338 // a one-time-only guard page, which it has released to us. The next | |
2339 // stack overflow on this thread will result in an ACCESS_VIOLATION. | |
2340 return Handle_Exception(exceptionInfo, | |
2341 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2342 } else { | |
2343 // Can only return and hope for the best. Further stack growth will | |
2344 // result in an ACCESS_VIOLATION. | |
2345 return EXCEPTION_CONTINUE_EXECUTION; | |
2346 } | |
2347 } else if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2348 // Either stack overflow or null pointer exception. | |
2349 if (in_java) { | |
2350 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2351 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2352 address stack_end = thread->stack_base() - thread->stack_size(); | |
2353 if (addr < stack_end && addr >= stack_end - os::vm_page_size()) { | |
2354 // Stack overflow. | |
2355 assert(!os::uses_stack_guard_pages(), | |
2356 "should be caught by red zone code above."); | |
2357 return Handle_Exception(exceptionInfo, | |
2358 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2359 } | |
2360 // | |
2361 // Check for safepoint polling and implicit null | |
2362 // We only expect null pointers in the stubs (vtable) | |
2363 // the rest are checked explicitly now. | |
2364 // | |
2365 CodeBlob* cb = CodeCache::find_blob(pc); | |
2366 if (cb != NULL) { | |
2367 if (os::is_poll_address(addr)) { | |
2368 address stub = SharedRuntime::get_poll_stub(pc); | |
2369 return Handle_Exception(exceptionInfo, stub); | |
2370 } | |
2371 } | |
2372 { | |
2373 #ifdef _WIN64 | |
2374 // | |
2375 // If it's a legal stack address map the entire region in | |
2376 // | |
2377 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2378 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2379 if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) { | |
2380 addr = (address)((uintptr_t)addr & | |
2381 (~((uintptr_t)os::vm_page_size() - (uintptr_t)1))); | |
656 | 2382 os::commit_memory((char *)addr, thread->stack_base() - addr, |
2383 false ); | |
0 | 2384 return EXCEPTION_CONTINUE_EXECUTION; |
2385 } | |
2386 else | |
2387 #endif | |
2388 { | |
2389 // Null pointer exception. | |
2390 #ifdef _M_IA64 | |
2391 // We catch register stack overflows in compiled code by doing | |
2392 // an explicit compare and executing a st8(G0, G0) if the | |
2393 // BSP enters into our guard area. We test for the overflow | |
2394 // condition and fall into the normal null pointer exception | |
2395 // code if BSP hasn't overflowed. | |
2396 if ( in_java ) { | |
2397 if(thread->register_stack_overflow()) { | |
2398 assert((address)exceptionInfo->ContextRecord->IntS3 == | |
2399 thread->register_stack_limit(), | |
2400 "GR7 doesn't contain register_stack_limit"); | |
2401 // Disable the yellow zone which sets the state that | |
2402 // we've got a stack overflow problem. | |
2403 if (thread->stack_yellow_zone_enabled()) { | |
2404 thread->disable_stack_yellow_zone(); | |
2405 } | |
2406 // Give us some room to process the exception | |
2407 thread->disable_register_stack_guard(); | |
2408 // Update GR7 with the new limit so we can continue running | |
2409 // compiled code. | |
2410 exceptionInfo->ContextRecord->IntS3 = | |
2411 (ULONGLONG)thread->register_stack_limit(); | |
2412 return Handle_Exception(exceptionInfo, | |
2413 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2414 } else { | |
2415 // | |
2416 // Check for implicit null | |
2417 // We only expect null pointers in the stubs (vtable) | |
2418 // the rest are checked explicitly now. | |
2419 // | |
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2420 if (((uintptr_t)addr) < os::vm_page_size() ) { |
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2421 // an access to the first page of VM--assume it is a null pointer |
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2422 address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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2423 if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
0 | 2424 } |
2425 } | |
2426 } // in_java | |
2427 | |
2428 // IA64 doesn't use implicit null checking yet. So we shouldn't | |
2429 // get here. | |
2430 tty->print_raw_cr("Access violation, possible null pointer exception"); | |
2431 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2432 exceptionInfo->ContextRecord); | |
2433 return EXCEPTION_CONTINUE_SEARCH; | |
2434 #else /* !IA64 */ | |
2435 | |
2436 // Windows 98 reports faulting addresses incorrectly | |
2437 if (!MacroAssembler::needs_explicit_null_check((intptr_t)addr) || | |
2438 !os::win32::is_nt()) { | |
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2439 address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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2440 if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
0 | 2441 } |
2442 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2443 exceptionInfo->ContextRecord); | |
2444 return EXCEPTION_CONTINUE_SEARCH; | |
2445 #endif | |
2446 } | |
2447 } | |
2448 } | |
2449 | |
2450 #ifdef _WIN64 | |
2451 // Special care for fast JNI field accessors. | |
2452 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks | |
2453 // in and the heap gets shrunk before the field access. | |
2454 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2455 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
2456 if (addr != (address)-1) { | |
2457 return Handle_Exception(exceptionInfo, addr); | |
2458 } | |
2459 } | |
2460 #endif | |
2461 | |
2462 #ifdef _WIN64 | |
2463 // Windows will sometimes generate an access violation | |
2464 // when we call malloc. Since we use VectoredExceptions | |
2465 // on 64 bit platforms, we see this exception. We must | |
2466 // pass this exception on so Windows can recover. | |
2467 // We check to see if the pc of the fault is in NTDLL.DLL | |
2468 // if so, we pass control on to Windows for handling. | |
2469 if (UseVectoredExceptions && _addr_in_ntdll(pc)) return EXCEPTION_CONTINUE_SEARCH; | |
2470 #endif | |
2471 | |
2472 // Stack overflow or null pointer exception in native code. | |
2473 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2474 exceptionInfo->ContextRecord); | |
2475 return EXCEPTION_CONTINUE_SEARCH; | |
2476 } | |
2477 | |
2478 if (in_java) { | |
2479 switch (exception_code) { | |
2480 case EXCEPTION_INT_DIVIDE_BY_ZERO: | |
2481 return Handle_Exception(exceptionInfo, SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO)); | |
2482 | |
2483 case EXCEPTION_INT_OVERFLOW: | |
2484 return Handle_IDiv_Exception(exceptionInfo); | |
2485 | |
2486 } // switch | |
2487 } | |
2488 #ifndef _WIN64 | |
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2489 if (((thread->thread_state() == _thread_in_Java) || |
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2490 (thread->thread_state() == _thread_in_native)) && |
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2491 exception_code != EXCEPTION_UNCAUGHT_CXX_EXCEPTION) |
0 | 2492 { |
2493 LONG result=Handle_FLT_Exception(exceptionInfo); | |
2494 if (result==EXCEPTION_CONTINUE_EXECUTION) return result; | |
2495 } | |
2496 #endif //_WIN64 | |
2497 } | |
2498 | |
2499 if (exception_code != EXCEPTION_BREAKPOINT) { | |
2500 #ifndef _WIN64 | |
2501 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2502 exceptionInfo->ContextRecord); | |
2503 #else | |
2504 // Itanium Windows uses a VectoredExceptionHandler | |
2505 // Which means that C++ programatic exception handlers (try/except) | |
2506 // will get here. Continue the search for the right except block if | |
2507 // the exception code is not a fatal code. | |
2508 switch ( exception_code ) { | |
2509 case EXCEPTION_ACCESS_VIOLATION: | |
2510 case EXCEPTION_STACK_OVERFLOW: | |
2511 case EXCEPTION_ILLEGAL_INSTRUCTION: | |
2512 case EXCEPTION_ILLEGAL_INSTRUCTION_2: | |
2513 case EXCEPTION_INT_OVERFLOW: | |
2514 case EXCEPTION_INT_DIVIDE_BY_ZERO: | |
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2515 case EXCEPTION_UNCAUGHT_CXX_EXCEPTION: |
0 | 2516 { report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
2517 exceptionInfo->ContextRecord); | |
2518 } | |
2519 break; | |
2520 default: | |
2521 break; | |
2522 } | |
2523 #endif | |
2524 } | |
2525 return EXCEPTION_CONTINUE_SEARCH; | |
2526 } | |
2527 | |
2528 #ifndef _WIN64 | |
2529 // Special care for fast JNI accessors. | |
2530 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in and | |
2531 // the heap gets shrunk before the field access. | |
2532 // Need to install our own structured exception handler since native code may | |
2533 // install its own. | |
2534 LONG WINAPI fastJNIAccessorExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2535 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2536 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2537 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
2538 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
2539 if (addr != (address)-1) { | |
2540 return Handle_Exception(exceptionInfo, addr); | |
2541 } | |
2542 } | |
2543 return EXCEPTION_CONTINUE_SEARCH; | |
2544 } | |
2545 | |
2546 #define DEFINE_FAST_GETFIELD(Return,Fieldname,Result) \ | |
2547 Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, jobject obj, jfieldID fieldID) { \ | |
2548 __try { \ | |
2549 return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, obj, fieldID); \ | |
2550 } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { \ | |
2551 } \ | |
2552 return 0; \ | |
2553 } | |
2554 | |
2555 DEFINE_FAST_GETFIELD(jboolean, bool, Boolean) | |
2556 DEFINE_FAST_GETFIELD(jbyte, byte, Byte) | |
2557 DEFINE_FAST_GETFIELD(jchar, char, Char) | |
2558 DEFINE_FAST_GETFIELD(jshort, short, Short) | |
2559 DEFINE_FAST_GETFIELD(jint, int, Int) | |
2560 DEFINE_FAST_GETFIELD(jlong, long, Long) | |
2561 DEFINE_FAST_GETFIELD(jfloat, float, Float) | |
2562 DEFINE_FAST_GETFIELD(jdouble, double, Double) | |
2563 | |
2564 address os::win32::fast_jni_accessor_wrapper(BasicType type) { | |
2565 switch (type) { | |
2566 case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper; | |
2567 case T_BYTE: return (address)jni_fast_GetByteField_wrapper; | |
2568 case T_CHAR: return (address)jni_fast_GetCharField_wrapper; | |
2569 case T_SHORT: return (address)jni_fast_GetShortField_wrapper; | |
2570 case T_INT: return (address)jni_fast_GetIntField_wrapper; | |
2571 case T_LONG: return (address)jni_fast_GetLongField_wrapper; | |
2572 case T_FLOAT: return (address)jni_fast_GetFloatField_wrapper; | |
2573 case T_DOUBLE: return (address)jni_fast_GetDoubleField_wrapper; | |
2574 default: ShouldNotReachHere(); | |
2575 } | |
2576 return (address)-1; | |
2577 } | |
2578 #endif | |
2579 | |
2580 // Virtual Memory | |
2581 | |
2582 int os::vm_page_size() { return os::win32::vm_page_size(); } | |
2583 int os::vm_allocation_granularity() { | |
2584 return os::win32::vm_allocation_granularity(); | |
2585 } | |
2586 | |
2587 // Windows large page support is available on Windows 2003. In order to use | |
2588 // large page memory, the administrator must first assign additional privilege | |
2589 // to the user: | |
2590 // + select Control Panel -> Administrative Tools -> Local Security Policy | |
2591 // + select Local Policies -> User Rights Assignment | |
2592 // + double click "Lock pages in memory", add users and/or groups | |
2593 // + reboot | |
2594 // Note the above steps are needed for administrator as well, as administrators | |
2595 // by default do not have the privilege to lock pages in memory. | |
2596 // | |
2597 // Note about Windows 2003: although the API supports committing large page | |
2598 // memory on a page-by-page basis and VirtualAlloc() returns success under this | |
2599 // scenario, I found through experiment it only uses large page if the entire | |
2600 // memory region is reserved and committed in a single VirtualAlloc() call. | |
2601 // This makes Windows large page support more or less like Solaris ISM, in | |
2602 // that the entire heap must be committed upfront. This probably will change | |
2603 // in the future, if so the code below needs to be revisited. | |
2604 | |
2605 #ifndef MEM_LARGE_PAGES | |
2606 #define MEM_LARGE_PAGES 0x20000000 | |
2607 #endif | |
2608 | |
2609 static HANDLE _hProcess; | |
2610 static HANDLE _hToken; | |
2611 | |
2612 static size_t _large_page_size = 0; | |
2613 | |
2614 static bool resolve_functions_for_large_page_init() { | |
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2615 return os::Kernel32Dll::GetLargePageMinimumAvailable() && |
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2616 os::Advapi32Dll::AdvapiAvailable(); |
0 | 2617 } |
2618 | |
2619 static bool request_lock_memory_privilege() { | |
2620 _hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, | |
2621 os::current_process_id()); | |
2622 | |
2623 LUID luid; | |
2624 if (_hProcess != NULL && | |
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2625 os::Advapi32Dll::OpenProcessToken(_hProcess, TOKEN_ADJUST_PRIVILEGES, &_hToken) && |
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2626 os::Advapi32Dll::LookupPrivilegeValue(NULL, "SeLockMemoryPrivilege", &luid)) { |
0 | 2627 |
2628 TOKEN_PRIVILEGES tp; | |
2629 tp.PrivilegeCount = 1; | |
2630 tp.Privileges[0].Luid = luid; | |
2631 tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; | |
2632 | |
2633 // AdjustTokenPrivileges() may return TRUE even when it couldn't change the | |
2634 // privilege. Check GetLastError() too. See MSDN document. | |
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2635 if (os::Advapi32Dll::AdjustTokenPrivileges(_hToken, false, &tp, sizeof(tp), NULL, NULL) && |
0 | 2636 (GetLastError() == ERROR_SUCCESS)) { |
2637 return true; | |
2638 } | |
2639 } | |
2640 | |
2641 return false; | |
2642 } | |
2643 | |
2644 static void cleanup_after_large_page_init() { | |
2645 if (_hProcess) CloseHandle(_hProcess); | |
2646 _hProcess = NULL; | |
2647 if (_hToken) CloseHandle(_hToken); | |
2648 _hToken = NULL; | |
2649 } | |
2650 | |
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2651 void os::large_page_init() { |
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2652 if (!UseLargePages) return; |
0 | 2653 |
2654 // print a warning if any large page related flag is specified on command line | |
2655 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || | |
2656 !FLAG_IS_DEFAULT(LargePageSizeInBytes); | |
2657 bool success = false; | |
2658 | |
2659 # define WARN(msg) if (warn_on_failure) { warning(msg); } | |
2660 if (resolve_functions_for_large_page_init()) { | |
2661 if (request_lock_memory_privilege()) { | |
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2662 size_t s = os::Kernel32Dll::GetLargePageMinimum(); |
0 | 2663 if (s) { |
2664 #if defined(IA32) || defined(AMD64) | |
2665 if (s > 4*M || LargePageSizeInBytes > 4*M) { | |
2666 WARN("JVM cannot use large pages bigger than 4mb."); | |
2667 } else { | |
2668 #endif | |
2669 if (LargePageSizeInBytes && LargePageSizeInBytes % s == 0) { | |
2670 _large_page_size = LargePageSizeInBytes; | |
2671 } else { | |
2672 _large_page_size = s; | |
2673 } | |
2674 success = true; | |
2675 #if defined(IA32) || defined(AMD64) | |
2676 } | |
2677 #endif | |
2678 } else { | |
2679 WARN("Large page is not supported by the processor."); | |
2680 } | |
2681 } else { | |
2682 WARN("JVM cannot use large page memory because it does not have enough privilege to lock pages in memory."); | |
2683 } | |
2684 } else { | |
2685 WARN("Large page is not supported by the operating system."); | |
2686 } | |
2687 #undef WARN | |
2688 | |
2689 const size_t default_page_size = (size_t) vm_page_size(); | |
2690 if (success && _large_page_size > default_page_size) { | |
2691 _page_sizes[0] = _large_page_size; | |
2692 _page_sizes[1] = default_page_size; | |
2693 _page_sizes[2] = 0; | |
2694 } | |
2695 | |
2696 cleanup_after_large_page_init(); | |
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2697 UseLargePages = success; |
0 | 2698 } |
2699 | |
2700 // On win32, one cannot release just a part of reserved memory, it's an | |
2701 // all or nothing deal. When we split a reservation, we must break the | |
2702 // reservation into two reservations. | |
2703 void os::split_reserved_memory(char *base, size_t size, size_t split, | |
2704 bool realloc) { | |
2705 if (size > 0) { | |
2706 release_memory(base, size); | |
2707 if (realloc) { | |
2708 reserve_memory(split, base); | |
2709 } | |
2710 if (size != split) { | |
2711 reserve_memory(size - split, base + split); | |
2712 } | |
2713 } | |
2714 } | |
2715 | |
2716 char* os::reserve_memory(size_t bytes, char* addr, size_t alignment_hint) { | |
2717 assert((size_t)addr % os::vm_allocation_granularity() == 0, | |
2718 "reserve alignment"); | |
2719 assert(bytes % os::vm_allocation_granularity() == 0, "reserve block size"); | |
656 | 2720 char* res = (char*)VirtualAlloc(addr, bytes, MEM_RESERVE, PAGE_READWRITE); |
0 | 2721 assert(res == NULL || addr == NULL || addr == res, |
2722 "Unexpected address from reserve."); | |
2723 return res; | |
2724 } | |
2725 | |
2726 // Reserve memory at an arbitrary address, only if that area is | |
2727 // available (and not reserved for something else). | |
2728 char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) { | |
2729 // Windows os::reserve_memory() fails of the requested address range is | |
2730 // not avilable. | |
2731 return reserve_memory(bytes, requested_addr); | |
2732 } | |
2733 | |
2734 size_t os::large_page_size() { | |
2735 return _large_page_size; | |
2736 } | |
2737 | |
2738 bool os::can_commit_large_page_memory() { | |
2739 // Windows only uses large page memory when the entire region is reserved | |
2740 // and committed in a single VirtualAlloc() call. This may change in the | |
2741 // future, but with Windows 2003 it's not possible to commit on demand. | |
2742 return false; | |
2743 } | |
2744 | |
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2745 bool os::can_execute_large_page_memory() { |
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2746 return true; |
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2747 } |
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2748 |
656 | 2749 char* os::reserve_memory_special(size_t bytes, char* addr, bool exec) { |
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2750 |
717 | 2751 const DWORD prot = exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE; |
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2752 |
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2753 if (UseLargePagesIndividualAllocation) { |
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2754 if (TracePageSizes && Verbose) { |
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2755 tty->print_cr("Reserving large pages individually."); |
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2756 } |
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2757 char * p_buf; |
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2758 // first reserve enough address space in advance since we want to be |
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2759 // able to break a single contiguous virtual address range into multiple |
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2760 // large page commits but WS2003 does not allow reserving large page space |
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2761 // so we just use 4K pages for reserve, this gives us a legal contiguous |
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2762 // address space. then we will deallocate that reservation, and re alloc |
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2763 // using large pages |
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2764 const size_t size_of_reserve = bytes + _large_page_size; |
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2765 if (bytes > size_of_reserve) { |
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2766 // Overflowed. |
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2767 warning("Individually allocated large pages failed, " |
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2768 "use -XX:-UseLargePagesIndividualAllocation to turn off"); |
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2769 return NULL; |
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2770 } |
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2771 p_buf = (char *) VirtualAlloc(addr, |
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2772 size_of_reserve, // size of Reserve |
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2773 MEM_RESERVE, |
656 | 2774 PAGE_READWRITE); |
389
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2775 // If reservation failed, return NULL |
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2776 if (p_buf == NULL) return NULL; |
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2777 |
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2778 release_memory(p_buf, bytes + _large_page_size); |
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2779 // round up to page boundary. If the size_of_reserve did not |
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2780 // overflow and the reservation did not fail, this align up |
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2781 // should not overflow. |
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2782 p_buf = (char *) align_size_up((size_t)p_buf, _large_page_size); |
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2783 |
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2784 // now go through and allocate one page at a time until all bytes are |
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2785 // allocated |
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2786 size_t bytes_remaining = align_size_up(bytes, _large_page_size); |
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2787 // An overflow of align_size_up() would have been caught above |
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2788 // in the calculation of size_of_reserve. |
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2789 char * next_alloc_addr = p_buf; |
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2790 |
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2791 #ifdef ASSERT |
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2792 // Variable for the failure injection |
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2793 long ran_num = os::random(); |
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2794 size_t fail_after = ran_num % bytes; |
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2795 #endif |
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2796 |
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2797 while (bytes_remaining) { |
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2798 size_t bytes_to_rq = MIN2(bytes_remaining, _large_page_size); |
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2799 // Note allocate and commit |
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2800 char * p_new; |
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2801 |
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2802 #ifdef ASSERT |
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2803 bool inject_error = LargePagesIndividualAllocationInjectError && |
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2804 (bytes_remaining <= fail_after); |
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2805 #else |
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2806 const bool inject_error = false; |
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2807 #endif |
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2808 |
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2809 if (inject_error) { |
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2810 p_new = NULL; |
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2811 } else { |
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2812 p_new = (char *) VirtualAlloc(next_alloc_addr, |
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2813 bytes_to_rq, |
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2814 MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES, |
717 | 2815 prot); |
389
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2816 } |
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2817 |
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2818 if (p_new == NULL) { |
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2819 // Free any allocated pages |
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2820 if (next_alloc_addr > p_buf) { |
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2821 // Some memory was committed so release it. |
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2822 size_t bytes_to_release = bytes - bytes_remaining; |
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2823 release_memory(p_buf, bytes_to_release); |
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2824 } |
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2825 #ifdef ASSERT |
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2826 if (UseLargePagesIndividualAllocation && |
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2827 LargePagesIndividualAllocationInjectError) { |
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2828 if (TracePageSizes && Verbose) { |
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2829 tty->print_cr("Reserving large pages individually failed."); |
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2830 } |
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2831 } |
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2832 #endif |
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2833 return NULL; |
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2834 } |
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2835 bytes_remaining -= bytes_to_rq; |
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2836 next_alloc_addr += bytes_to_rq; |
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2837 } |
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2838 |
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2839 return p_buf; |
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2840 |
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2841 } else { |
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2842 // normal policy just allocate it all at once |
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2843 DWORD flag = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES; |
717 | 2844 char * res = (char *)VirtualAlloc(NULL, bytes, flag, prot); |
389
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2845 return res; |
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2846 } |
0 | 2847 } |
2848 | |
2849 bool os::release_memory_special(char* base, size_t bytes) { | |
2850 return release_memory(base, bytes); | |
2851 } | |
2852 | |
2853 void os::print_statistics() { | |
2854 } | |
2855 | |
656 | 2856 bool os::commit_memory(char* addr, size_t bytes, bool exec) { |
0 | 2857 if (bytes == 0) { |
2858 // Don't bother the OS with noops. | |
2859 return true; | |
2860 } | |
2861 assert((size_t) addr % os::vm_page_size() == 0, "commit on page boundaries"); | |
2862 assert(bytes % os::vm_page_size() == 0, "commit in page-sized chunks"); | |
2863 // Don't attempt to print anything if the OS call fails. We're | |
2864 // probably low on resources, so the print itself may cause crashes. | |
656 | 2865 bool result = VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_READWRITE) != 0; |
2866 if (result != NULL && exec) { | |
2867 DWORD oldprot; | |
2868 // Windows doc says to use VirtualProtect to get execute permissions | |
2869 return VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &oldprot) != 0; | |
2870 } else { | |
2871 return result; | |
2872 } | |
0 | 2873 } |
2874 | |
656 | 2875 bool os::commit_memory(char* addr, size_t size, size_t alignment_hint, |
2876 bool exec) { | |
2877 return commit_memory(addr, size, exec); | |
0 | 2878 } |
2879 | |
2880 bool os::uncommit_memory(char* addr, size_t bytes) { | |
2881 if (bytes == 0) { | |
2882 // Don't bother the OS with noops. | |
2883 return true; | |
2884 } | |
2885 assert((size_t) addr % os::vm_page_size() == 0, "uncommit on page boundaries"); | |
2886 assert(bytes % os::vm_page_size() == 0, "uncommit in page-sized chunks"); | |
2887 return VirtualFree(addr, bytes, MEM_DECOMMIT) != 0; | |
2888 } | |
2889 | |
2890 bool os::release_memory(char* addr, size_t bytes) { | |
2891 return VirtualFree(addr, 0, MEM_RELEASE) != 0; | |
2892 } | |
2893 | |
1320
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2894 bool os::create_stack_guard_pages(char* addr, size_t size) { |
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2895 return os::commit_memory(addr, size); |
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2896 } |
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2897 |
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2898 bool os::remove_stack_guard_pages(char* addr, size_t size) { |
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2899 return os::uncommit_memory(addr, size); |
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2900 } |
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2901 |
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2902 // Set protections specified |
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2903 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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2904 bool is_committed) { |
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2905 unsigned int p = 0; |
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2906 switch (prot) { |
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2907 case MEM_PROT_NONE: p = PAGE_NOACCESS; break; |
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2908 case MEM_PROT_READ: p = PAGE_READONLY; break; |
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2909 case MEM_PROT_RW: p = PAGE_READWRITE; break; |
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2910 case MEM_PROT_RWX: p = PAGE_EXECUTE_READWRITE; break; |
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2911 default: |
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2912 ShouldNotReachHere(); |
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2913 } |
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2914 |
0 | 2915 DWORD old_status; |
237
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2916 |
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2917 // Strange enough, but on Win32 one can change protection only for committed |
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2918 // memory, not a big deal anyway, as bytes less or equal than 64K |
656 | 2919 if (!is_committed && !commit_memory(addr, bytes, prot == MEM_PROT_RWX)) { |
237
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2920 fatal("cannot commit protection page"); |
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2921 } |
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2922 // One cannot use os::guard_memory() here, as on Win32 guard page |
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2923 // have different (one-shot) semantics, from MSDN on PAGE_GUARD: |
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2924 // |
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2925 // Pages in the region become guard pages. Any attempt to access a guard page |
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2926 // causes the system to raise a STATUS_GUARD_PAGE exception and turn off |
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2927 // the guard page status. Guard pages thus act as a one-time access alarm. |
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2928 return VirtualProtect(addr, bytes, p, &old_status) != 0; |
0 | 2929 } |
2930 | |
2931 bool os::guard_memory(char* addr, size_t bytes) { | |
2932 DWORD old_status; | |
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2933 return VirtualProtect(addr, bytes, PAGE_READWRITE | PAGE_GUARD, &old_status) != 0; |
0 | 2934 } |
2935 | |
2936 bool os::unguard_memory(char* addr, size_t bytes) { | |
2937 DWORD old_status; | |
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2938 return VirtualProtect(addr, bytes, PAGE_READWRITE, &old_status) != 0; |
0 | 2939 } |
2940 | |
2941 void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { } | |
2942 void os::free_memory(char *addr, size_t bytes) { } | |
2943 void os::numa_make_global(char *addr, size_t bytes) { } | |
141 | 2944 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { } |
0 | 2945 bool os::numa_topology_changed() { return false; } |
2946 size_t os::numa_get_groups_num() { return 1; } | |
2947 int os::numa_get_group_id() { return 0; } | |
2948 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
2949 if (size > 0) { | |
2950 ids[0] = 0; | |
2951 return 1; | |
2952 } | |
2953 return 0; | |
2954 } | |
2955 | |
2956 bool os::get_page_info(char *start, page_info* info) { | |
2957 return false; | |
2958 } | |
2959 | |
2960 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
2961 return end; | |
2962 } | |
2963 | |
2964 char* os::non_memory_address_word() { | |
2965 // Must never look like an address returned by reserve_memory, | |
2966 // even in its subfields (as defined by the CPU immediate fields, | |
2967 // if the CPU splits constants across multiple instructions). | |
2968 return (char*)-1; | |
2969 } | |
2970 | |
2971 #define MAX_ERROR_COUNT 100 | |
2972 #define SYS_THREAD_ERROR 0xffffffffUL | |
2973 | |
2974 void os::pd_start_thread(Thread* thread) { | |
2975 DWORD ret = ResumeThread(thread->osthread()->thread_handle()); | |
2976 // Returns previous suspend state: | |
2977 // 0: Thread was not suspended | |
2978 // 1: Thread is running now | |
2979 // >1: Thread is still suspended. | |
2980 assert(ret != SYS_THREAD_ERROR, "StartThread failed"); // should propagate back | |
2981 } | |
2982 | |
2983 class HighResolutionInterval { | |
2984 // The default timer resolution seems to be 10 milliseconds. | |
2985 // (Where is this written down?) | |
2986 // If someone wants to sleep for only a fraction of the default, | |
2987 // then we set the timer resolution down to 1 millisecond for | |
2988 // the duration of their interval. | |
2989 // We carefully set the resolution back, since otherwise we | |
2990 // seem to incur an overhead (3%?) that we don't need. | |
2991 // CONSIDER: if ms is small, say 3, then we should run with a high resolution time. | |
2992 // Buf if ms is large, say 500, or 503, we should avoid the call to timeBeginPeriod(). | |
2993 // Alternatively, we could compute the relative error (503/500 = .6%) and only use | |
2994 // timeBeginPeriod() if the relative error exceeded some threshold. | |
2995 // timeBeginPeriod() has been linked to problems with clock drift on win32 systems and | |
2996 // to decreased efficiency related to increased timer "tick" rates. We want to minimize | |
2997 // (a) calls to timeBeginPeriod() and timeEndPeriod() and (b) time spent with high | |
2998 // resolution timers running. | |
2999 private: | |
3000 jlong resolution; | |
3001 public: | |
3002 HighResolutionInterval(jlong ms) { | |
3003 resolution = ms % 10L; | |
3004 if (resolution != 0) { | |
3005 MMRESULT result = timeBeginPeriod(1L); | |
3006 } | |
3007 } | |
3008 ~HighResolutionInterval() { | |
3009 if (resolution != 0) { | |
3010 MMRESULT result = timeEndPeriod(1L); | |
3011 } | |
3012 resolution = 0L; | |
3013 } | |
3014 }; | |
3015 | |
3016 int os::sleep(Thread* thread, jlong ms, bool interruptable) { | |
3017 jlong limit = (jlong) MAXDWORD; | |
3018 | |
3019 while(ms > limit) { | |
3020 int res; | |
3021 if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT) | |
3022 return res; | |
3023 ms -= limit; | |
3024 } | |
3025 | |
3026 assert(thread == Thread::current(), "thread consistency check"); | |
3027 OSThread* osthread = thread->osthread(); | |
3028 OSThreadWaitState osts(osthread, false /* not Object.wait() */); | |
3029 int result; | |
3030 if (interruptable) { | |
3031 assert(thread->is_Java_thread(), "must be java thread"); | |
3032 JavaThread *jt = (JavaThread *) thread; | |
3033 ThreadBlockInVM tbivm(jt); | |
3034 | |
3035 jt->set_suspend_equivalent(); | |
3036 // cleared by handle_special_suspend_equivalent_condition() or | |
3037 // java_suspend_self() via check_and_wait_while_suspended() | |
3038 | |
3039 HANDLE events[1]; | |
3040 events[0] = osthread->interrupt_event(); | |
3041 HighResolutionInterval *phri=NULL; | |
3042 if(!ForceTimeHighResolution) | |
3043 phri = new HighResolutionInterval( ms ); | |
3044 if (WaitForMultipleObjects(1, events, FALSE, (DWORD)ms) == WAIT_TIMEOUT) { | |
3045 result = OS_TIMEOUT; | |
3046 } else { | |
3047 ResetEvent(osthread->interrupt_event()); | |
3048 osthread->set_interrupted(false); | |
3049 result = OS_INTRPT; | |
3050 } | |
3051 delete phri; //if it is NULL, harmless | |
3052 | |
3053 // were we externally suspended while we were waiting? | |
3054 jt->check_and_wait_while_suspended(); | |
3055 } else { | |
3056 assert(!thread->is_Java_thread(), "must not be java thread"); | |
3057 Sleep((long) ms); | |
3058 result = OS_TIMEOUT; | |
3059 } | |
3060 return result; | |
3061 } | |
3062 | |
3063 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
3064 void os::infinite_sleep() { | |
3065 while (true) { // sleep forever ... | |
3066 Sleep(100000); // ... 100 seconds at a time | |
3067 } | |
3068 } | |
3069 | |
3070 typedef BOOL (WINAPI * STTSignature)(void) ; | |
3071 | |
3072 os::YieldResult os::NakedYield() { | |
3073 // Use either SwitchToThread() or Sleep(0) | |
3074 // Consider passing back the return value from SwitchToThread(). | |
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3075 if (os::Kernel32Dll::SwitchToThreadAvailable()) { |
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3076 return SwitchToThread() ? os::YIELD_SWITCHED : os::YIELD_NONEREADY ; |
0 | 3077 } else { |
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3078 Sleep(0); |
0 | 3079 } |
3080 return os::YIELD_UNKNOWN ; | |
3081 } | |
3082 | |
3083 void os::yield() { os::NakedYield(); } | |
3084 | |
3085 void os::yield_all(int attempts) { | |
3086 // Yields to all threads, including threads with lower priorities | |
3087 Sleep(1); | |
3088 } | |
3089 | |
3090 // Win32 only gives you access to seven real priorities at a time, | |
3091 // so we compress Java's ten down to seven. It would be better | |
3092 // if we dynamically adjusted relative priorities. | |
3093 | |
3094 int os::java_to_os_priority[MaxPriority + 1] = { | |
3095 THREAD_PRIORITY_IDLE, // 0 Entry should never be used | |
3096 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
3097 THREAD_PRIORITY_LOWEST, // 2 | |
3098 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
3099 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
3100 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
3101 THREAD_PRIORITY_NORMAL, // 6 | |
3102 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
3103 THREAD_PRIORITY_ABOVE_NORMAL, // 8 | |
3104 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
3105 THREAD_PRIORITY_HIGHEST // 10 MaxPriority | |
3106 }; | |
3107 | |
3108 int prio_policy1[MaxPriority + 1] = { | |
3109 THREAD_PRIORITY_IDLE, // 0 Entry should never be used | |
3110 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
3111 THREAD_PRIORITY_LOWEST, // 2 | |
3112 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
3113 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
3114 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
3115 THREAD_PRIORITY_ABOVE_NORMAL, // 6 | |
3116 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
3117 THREAD_PRIORITY_HIGHEST, // 8 | |
3118 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
3119 THREAD_PRIORITY_TIME_CRITICAL // 10 MaxPriority | |
3120 }; | |
3121 | |
3122 static int prio_init() { | |
3123 // If ThreadPriorityPolicy is 1, switch tables | |
3124 if (ThreadPriorityPolicy == 1) { | |
3125 int i; | |
3126 for (i = 0; i < MaxPriority + 1; i++) { | |
3127 os::java_to_os_priority[i] = prio_policy1[i]; | |
3128 } | |
3129 } | |
3130 return 0; | |
3131 } | |
3132 | |
3133 OSReturn os::set_native_priority(Thread* thread, int priority) { | |
3134 if (!UseThreadPriorities) return OS_OK; | |
3135 bool ret = SetThreadPriority(thread->osthread()->thread_handle(), priority) != 0; | |
3136 return ret ? OS_OK : OS_ERR; | |
3137 } | |
3138 | |
3139 OSReturn os::get_native_priority(const Thread* const thread, int* priority_ptr) { | |
3140 if ( !UseThreadPriorities ) { | |
3141 *priority_ptr = java_to_os_priority[NormPriority]; | |
3142 return OS_OK; | |
3143 } | |
3144 int os_prio = GetThreadPriority(thread->osthread()->thread_handle()); | |
3145 if (os_prio == THREAD_PRIORITY_ERROR_RETURN) { | |
3146 assert(false, "GetThreadPriority failed"); | |
3147 return OS_ERR; | |
3148 } | |
3149 *priority_ptr = os_prio; | |
3150 return OS_OK; | |
3151 } | |
3152 | |
3153 | |
3154 // Hint to the underlying OS that a task switch would not be good. | |
3155 // Void return because it's a hint and can fail. | |
3156 void os::hint_no_preempt() {} | |
3157 | |
3158 void os::interrupt(Thread* thread) { | |
3159 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
3160 "possibility of dangling Thread pointer"); | |
3161 | |
3162 OSThread* osthread = thread->osthread(); | |
3163 osthread->set_interrupted(true); | |
3164 // More than one thread can get here with the same value of osthread, | |
3165 // resulting in multiple notifications. We do, however, want the store | |
3166 // to interrupted() to be visible to other threads before we post | |
3167 // the interrupt event. | |
3168 OrderAccess::release(); | |
3169 SetEvent(osthread->interrupt_event()); | |
3170 // For JSR166: unpark after setting status | |
3171 if (thread->is_Java_thread()) | |
3172 ((JavaThread*)thread)->parker()->unpark(); | |
3173 | |
3174 ParkEvent * ev = thread->_ParkEvent ; | |
3175 if (ev != NULL) ev->unpark() ; | |
3176 | |
3177 } | |
3178 | |
3179 | |
3180 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
3181 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
3182 "possibility of dangling Thread pointer"); | |
3183 | |
3184 OSThread* osthread = thread->osthread(); | |
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3185 bool interrupted = osthread->interrupted(); |
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3186 // There is no synchronization between the setting of the interrupt |
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3187 // and it being cleared here. It is critical - see 6535709 - that |
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3188 // we only clear the interrupt state, and reset the interrupt event, |
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3189 // if we are going to report that we were indeed interrupted - else |
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3190 // an interrupt can be "lost", leading to spurious wakeups or lost wakeups |
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3191 // depending on the timing |
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3192 if (interrupted && clear_interrupted) { |
0 | 3193 osthread->set_interrupted(false); |
3194 ResetEvent(osthread->interrupt_event()); | |
3195 } // Otherwise leave the interrupted state alone | |
3196 | |
3197 return interrupted; | |
3198 } | |
3199 | |
3200 // Get's a pc (hint) for a running thread. Currently used only for profiling. | |
3201 ExtendedPC os::get_thread_pc(Thread* thread) { | |
3202 CONTEXT context; | |
3203 context.ContextFlags = CONTEXT_CONTROL; | |
3204 HANDLE handle = thread->osthread()->thread_handle(); | |
3205 #ifdef _M_IA64 | |
3206 assert(0, "Fix get_thread_pc"); | |
3207 return ExtendedPC(NULL); | |
3208 #else | |
3209 if (GetThreadContext(handle, &context)) { | |
3210 #ifdef _M_AMD64 | |
3211 return ExtendedPC((address) context.Rip); | |
3212 #else | |
3213 return ExtendedPC((address) context.Eip); | |
3214 #endif | |
3215 } else { | |
3216 return ExtendedPC(NULL); | |
3217 } | |
3218 #endif | |
3219 } | |
3220 | |
3221 // GetCurrentThreadId() returns DWORD | |
3222 intx os::current_thread_id() { return GetCurrentThreadId(); } | |
3223 | |
3224 static int _initial_pid = 0; | |
3225 | |
3226 int os::current_process_id() | |
3227 { | |
3228 return (_initial_pid ? _initial_pid : _getpid()); | |
3229 } | |
3230 | |
3231 int os::win32::_vm_page_size = 0; | |
3232 int os::win32::_vm_allocation_granularity = 0; | |
3233 int os::win32::_processor_type = 0; | |
3234 // Processor level is not available on non-NT systems, use vm_version instead | |
3235 int os::win32::_processor_level = 0; | |
3236 julong os::win32::_physical_memory = 0; | |
3237 size_t os::win32::_default_stack_size = 0; | |
3238 | |
3239 intx os::win32::_os_thread_limit = 0; | |
3240 volatile intx os::win32::_os_thread_count = 0; | |
3241 | |
3242 bool os::win32::_is_nt = false; | |
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3243 bool os::win32::_is_windows_2003 = false; |
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3244 bool os::win32::_is_windows_server = false; |
0 | 3245 |
3246 void os::win32::initialize_system_info() { | |
3247 SYSTEM_INFO si; | |
3248 GetSystemInfo(&si); | |
3249 _vm_page_size = si.dwPageSize; | |
3250 _vm_allocation_granularity = si.dwAllocationGranularity; | |
3251 _processor_type = si.dwProcessorType; | |
3252 _processor_level = si.wProcessorLevel; | |
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3253 set_processor_count(si.dwNumberOfProcessors); |
0 | 3254 |
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3255 MEMORYSTATUSEX ms; |
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3256 ms.dwLength = sizeof(ms); |
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3257 |
0 | 3258 // also returns dwAvailPhys (free physical memory bytes), dwTotalVirtual, dwAvailVirtual, |
3259 // dwMemoryLoad (% of memory in use) | |
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3260 GlobalMemoryStatusEx(&ms); |
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3261 _physical_memory = ms.ullTotalPhys; |
0 | 3262 |
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3263 OSVERSIONINFOEX oi; |
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3264 oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
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3265 GetVersionEx((OSVERSIONINFO*)&oi); |
0 | 3266 switch(oi.dwPlatformId) { |
3267 case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break; | |
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3268 case VER_PLATFORM_WIN32_NT: |
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3269 _is_nt = true; |
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3270 { |
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3271 int os_vers = oi.dwMajorVersion * 1000 + oi.dwMinorVersion; |
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3272 if (os_vers == 5002) { |
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3273 _is_windows_2003 = true; |
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3274 } |
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3275 if (oi.wProductType == VER_NT_DOMAIN_CONTROLLER || |
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3276 oi.wProductType == VER_NT_SERVER) { |
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3277 _is_windows_server = true; |
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3278 } |
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3279 } |
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3280 break; |
0 | 3281 default: fatal("Unknown platform"); |
3282 } | |
3283 | |
3284 _default_stack_size = os::current_stack_size(); | |
3285 assert(_default_stack_size > (size_t) _vm_page_size, "invalid stack size"); | |
3286 assert((_default_stack_size & (_vm_page_size - 1)) == 0, | |
3287 "stack size not a multiple of page size"); | |
3288 | |
3289 initialize_performance_counter(); | |
3290 | |
3291 // Win95/Win98 scheduler bug work-around. The Win95/98 scheduler is | |
3292 // known to deadlock the system, if the VM issues to thread operations with | |
3293 // a too high frequency, e.g., such as changing the priorities. | |
3294 // The 6000 seems to work well - no deadlocks has been notices on the test | |
3295 // programs that we have seen experience this problem. | |
3296 if (!os::win32::is_nt()) { | |
3297 StarvationMonitorInterval = 6000; | |
3298 } | |
3299 } | |
3300 | |
3301 | |
3429
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|
3302 HINSTANCE os::win32::load_Windows_dll(const char* name, char *ebuf, int ebuflen) { |
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3303 char path[MAX_PATH]; |
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3304 DWORD size; |
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3305 DWORD pathLen = (DWORD)sizeof(path); |
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3306 HINSTANCE result = NULL; |
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|
3307 |
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|
3308 // only allow library name without path component |
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|
3309 assert(strchr(name, '\\') == NULL, "path not allowed"); |
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3310 assert(strchr(name, ':') == NULL, "path not allowed"); |
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3311 if (strchr(name, '\\') != NULL || strchr(name, ':') != NULL) { |
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|
3312 jio_snprintf(ebuf, ebuflen, |
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|
3313 "Invalid parameter while calling os::win32::load_windows_dll(): cannot take path: %s", name); |
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|
3314 return NULL; |
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|
3315 } |
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|
3316 |
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|
3317 // search system directory |
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|
3318 if ((size = GetSystemDirectory(path, pathLen)) > 0) { |
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|
3319 strcat(path, "\\"); |
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3320 strcat(path, name); |
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3321 if ((result = (HINSTANCE)os::dll_load(path, ebuf, ebuflen)) != NULL) { |
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|
3322 return result; |
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|
3323 } |
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|
3324 } |
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|
3325 |
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3326 // try Windows directory |
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3327 if ((size = GetWindowsDirectory(path, pathLen)) > 0) { |
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|
3328 strcat(path, "\\"); |
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3329 strcat(path, name); |
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3330 if ((result = (HINSTANCE)os::dll_load(path, ebuf, ebuflen)) != NULL) { |
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|
3331 return result; |
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|
3332 } |
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|
3333 } |
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3334 |
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|
3335 jio_snprintf(ebuf, ebuflen, |
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3336 "os::win32::load_windows_dll() cannot load %s from system directories.", name); |
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3337 return NULL; |
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|
3338 } |
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|
3339 |
0 | 3340 void os::win32::setmode_streams() { |
3341 _setmode(_fileno(stdin), _O_BINARY); | |
3342 _setmode(_fileno(stdout), _O_BINARY); | |
3343 _setmode(_fileno(stderr), _O_BINARY); | |
3344 } | |
3345 | |
3346 | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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|
3347 bool os::is_debugger_attached() { |
da091bb67459
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|
3348 return IsDebuggerPresent() ? true : false; |
da091bb67459
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|
3349 } |
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|
3350 |
da091bb67459
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|
3351 |
da091bb67459
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|
3352 void os::wait_for_keypress_at_exit(void) { |
da091bb67459
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|
3353 if (PauseAtExit) { |
da091bb67459
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|
3354 fprintf(stderr, "Press any key to continue...\n"); |
da091bb67459
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changeset
|
3355 fgetc(stdin); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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|
3356 } |
da091bb67459
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|
3357 } |
da091bb67459
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|
3358 |
da091bb67459
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|
3359 |
0 | 3360 int os::message_box(const char* title, const char* message) { |
3361 int result = MessageBox(NULL, message, title, | |
3362 MB_YESNO | MB_ICONERROR | MB_SYSTEMMODAL | MB_DEFAULT_DESKTOP_ONLY); | |
3363 return result == IDYES; | |
3364 } | |
3365 | |
3366 int os::allocate_thread_local_storage() { | |
3367 return TlsAlloc(); | |
3368 } | |
3369 | |
3370 | |
3371 void os::free_thread_local_storage(int index) { | |
3372 TlsFree(index); | |
3373 } | |
3374 | |
3375 | |
3376 void os::thread_local_storage_at_put(int index, void* value) { | |
3377 TlsSetValue(index, value); | |
3378 assert(thread_local_storage_at(index) == value, "Just checking"); | |
3379 } | |
3380 | |
3381 | |
3382 void* os::thread_local_storage_at(int index) { | |
3383 return TlsGetValue(index); | |
3384 } | |
3385 | |
3386 | |
3387 #ifndef PRODUCT | |
3388 #ifndef _WIN64 | |
3389 // Helpers to check whether NX protection is enabled | |
3390 int nx_exception_filter(_EXCEPTION_POINTERS *pex) { | |
3391 if (pex->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
3392 pex->ExceptionRecord->NumberParameters > 0 && | |
3393 pex->ExceptionRecord->ExceptionInformation[0] == | |
3394 EXCEPTION_INFO_EXEC_VIOLATION) { | |
3395 return EXCEPTION_EXECUTE_HANDLER; | |
3396 } | |
3397 return EXCEPTION_CONTINUE_SEARCH; | |
3398 } | |
3399 | |
3400 void nx_check_protection() { | |
3401 // If NX is enabled we'll get an exception calling into code on the stack | |
3402 char code[] = { (char)0xC3 }; // ret | |
3403 void *code_ptr = (void *)code; | |
3404 __try { | |
3405 __asm call code_ptr | |
3406 } __except(nx_exception_filter((_EXCEPTION_POINTERS*)_exception_info())) { | |
3407 tty->print_raw_cr("NX protection detected."); | |
3408 } | |
3409 } | |
3410 #endif // _WIN64 | |
3411 #endif // PRODUCT | |
3412 | |
3413 // this is called _before_ the global arguments have been parsed | |
3414 void os::init(void) { | |
3415 _initial_pid = _getpid(); | |
3416 | |
3417 init_random(1234567); | |
3418 | |
3419 win32::initialize_system_info(); | |
3420 win32::setmode_streams(); | |
3421 init_page_sizes((size_t) win32::vm_page_size()); | |
3422 | |
3423 // For better scalability on MP systems (must be called after initialize_system_info) | |
3424 #ifndef PRODUCT | |
3425 if (is_MP()) { | |
3426 NoYieldsInMicrolock = true; | |
3427 } | |
3428 #endif | |
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3429 // This may be overridden later when argument processing is done. |
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3430 FLAG_SET_ERGO(bool, UseLargePagesIndividualAllocation, |
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3431 os::win32::is_windows_2003()); |
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3432 |
0 | 3433 // Initialize main_process and main_thread |
3434 main_process = GetCurrentProcess(); // Remember main_process is a pseudo handle | |
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3435 if (!DuplicateHandle(main_process, GetCurrentThread(), main_process, |
0 | 3436 &main_thread, THREAD_ALL_ACCESS, false, 0)) { |
3437 fatal("DuplicateHandle failed\n"); | |
3438 } | |
3439 main_thread_id = (int) GetCurrentThreadId(); | |
3440 } | |
3441 | |
3442 // To install functions for atexit processing | |
3443 extern "C" { | |
3444 static void perfMemory_exit_helper() { | |
3445 perfMemory_exit(); | |
3446 } | |
3447 } | |
3448 | |
3449 // this is called _after_ the global arguments have been parsed | |
3450 jint os::init_2(void) { | |
3451 // Allocate a single page and mark it as readable for safepoint polling | |
3452 address polling_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READONLY); | |
3453 guarantee( polling_page != NULL, "Reserve Failed for polling page"); | |
3454 | |
3455 address return_page = (address)VirtualAlloc(polling_page, os::vm_page_size(), MEM_COMMIT, PAGE_READONLY); | |
3456 guarantee( return_page != NULL, "Commit Failed for polling page"); | |
3457 | |
3458 os::set_polling_page( polling_page ); | |
3459 | |
3460 #ifndef PRODUCT | |
3461 if( Verbose && PrintMiscellaneous ) | |
3462 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
3463 #endif | |
3464 | |
3465 if (!UseMembar) { | |
656 | 3466 address mem_serialize_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READWRITE); |
0 | 3467 guarantee( mem_serialize_page != NULL, "Reserve Failed for memory serialize page"); |
3468 | |
656 | 3469 return_page = (address)VirtualAlloc(mem_serialize_page, os::vm_page_size(), MEM_COMMIT, PAGE_READWRITE); |
0 | 3470 guarantee( return_page != NULL, "Commit Failed for memory serialize page"); |
3471 | |
3472 os::set_memory_serialize_page( mem_serialize_page ); | |
3473 | |
3474 #ifndef PRODUCT | |
3475 if(Verbose && PrintMiscellaneous) | |
3476 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
3477 #endif | |
3478 } | |
3479 | |
3318
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|
3480 os::large_page_init(); |
0 | 3481 |
3482 // Setup Windows Exceptions | |
3483 | |
3484 // On Itanium systems, Structured Exception Handling does not | |
3485 // work since stack frames must be walkable by the OS. Since | |
3486 // much of our code is dynamically generated, and we do not have | |
3487 // proper unwind .xdata sections, the system simply exits | |
3488 // rather than delivering the exception. To work around | |
3489 // this we use VectorExceptions instead. | |
3490 #ifdef _WIN64 | |
3491 if (UseVectoredExceptions) { | |
3492 topLevelVectoredExceptionHandler = AddVectoredExceptionHandler( 1, topLevelExceptionFilter); | |
3493 } | |
3494 #endif | |
3495 | |
3496 // for debugging float code generation bugs | |
3497 if (ForceFloatExceptions) { | |
3498 #ifndef _WIN64 | |
3499 static long fp_control_word = 0; | |
3500 __asm { fstcw fp_control_word } | |
3501 // see Intel PPro Manual, Vol. 2, p 7-16 | |
3502 const long precision = 0x20; | |
3503 const long underflow = 0x10; | |
3504 const long overflow = 0x08; | |
3505 const long zero_div = 0x04; | |
3506 const long denorm = 0x02; | |
3507 const long invalid = 0x01; | |
3508 fp_control_word |= invalid; | |
3509 __asm { fldcw fp_control_word } | |
3510 #endif | |
3511 } | |
3512 | |
3513 // If stack_commit_size is 0, windows will reserve the default size, | |
3514 // but only commit a small portion of it. | |
3515 size_t stack_commit_size = round_to(ThreadStackSize*K, os::vm_page_size()); | |
3516 size_t default_reserve_size = os::win32::default_stack_size(); | |
3517 size_t actual_reserve_size = stack_commit_size; | |
3518 if (stack_commit_size < default_reserve_size) { | |
3519 // If stack_commit_size == 0, we want this too | |
3520 actual_reserve_size = default_reserve_size; | |
3521 } | |
3522 | |
1867
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3523 // Check minimum allowable stack size for thread creation and to initialize |
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|
3524 // the java system classes, including StackOverflowError - depends on page |
b6aedd1acdc0
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|
3525 // size. Add a page for compiler2 recursion in main thread. |
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|
3526 // Add in 2*BytesPerWord times page size to account for VM stack during |
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|
3527 // class initialization depending on 32 or 64 bit VM. |
b6aedd1acdc0
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coleenp
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|
3528 size_t min_stack_allowed = |
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6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
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|
3529 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
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|
3530 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size(); |
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|
3531 if (actual_reserve_size < min_stack_allowed) { |
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|
3532 tty->print_cr("\nThe stack size specified is too small, " |
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|
3533 "Specify at least %dk", |
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|
3534 min_stack_allowed / K); |
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6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
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|
3535 return JNI_ERR; |
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|
3536 } |
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|
3537 |
0 | 3538 JavaThread::set_stack_size_at_create(stack_commit_size); |
3539 | |
3540 // Calculate theoretical max. size of Threads to guard gainst artifical | |
3541 // out-of-memory situations, where all available address-space has been | |
3542 // reserved by thread stacks. | |
3543 assert(actual_reserve_size != 0, "Must have a stack"); | |
3544 | |
3545 // Calculate the thread limit when we should start doing Virtual Memory | |
3546 // banging. Currently when the threads will have used all but 200Mb of space. | |
3547 // | |
3548 // TODO: consider performing a similar calculation for commit size instead | |
3549 // as reserve size, since on a 64-bit platform we'll run into that more | |
3550 // often than running out of virtual memory space. We can use the | |
3551 // lower value of the two calculations as the os_thread_limit. | |
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|
3552 size_t max_address_space = ((size_t)1 << (BitsPerWord - 1)) - (200 * K * K); |
0 | 3553 win32::_os_thread_limit = (intx)(max_address_space / actual_reserve_size); |
3554 | |
3555 // at exit methods are called in the reverse order of their registration. | |
3556 // there is no limit to the number of functions registered. atexit does | |
3557 // not set errno. | |
3558 | |
3559 if (PerfAllowAtExitRegistration) { | |
3560 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
3561 // atexit functions can be delayed until process exit time, which | |
3562 // can be problematic for embedded VM situations. Embedded VMs should | |
3563 // call DestroyJavaVM() to assure that VM resources are released. | |
3564 | |
3565 // note: perfMemory_exit_helper atexit function may be removed in | |
3566 // the future if the appropriate cleanup code can be added to the | |
3567 // VM_Exit VMOperation's doit method. | |
3568 if (atexit(perfMemory_exit_helper) != 0) { | |
3569 warning("os::init_2 atexit(perfMemory_exit_helper) failed"); | |
3570 } | |
3571 } | |
3572 | |
3573 #ifndef _WIN64 | |
3574 // Print something if NX is enabled (win32 on AMD64) | |
3575 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) nx_check_protection()); | |
3576 #endif | |
3577 | |
3578 // initialize thread priority policy | |
3579 prio_init(); | |
3580 | |
462
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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389
diff
changeset
|
3581 if (UseNUMA && !ForceNUMA) { |
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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
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changeset
|
3582 UseNUMA = false; // Currently unsupported. |
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|
3583 } |
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|
3584 |
0 | 3585 return JNI_OK; |
3586 } | |
3587 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3588 void os::init_3(void) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3589 return; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3590 } |
0 | 3591 |
3592 // Mark the polling page as unreadable | |
3593 void os::make_polling_page_unreadable(void) { | |
3594 DWORD old_status; | |
3595 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_NOACCESS, &old_status) ) | |
3596 fatal("Could not disable polling page"); | |
3597 }; | |
3598 | |
3599 // Mark the polling page as readable | |
3600 void os::make_polling_page_readable(void) { | |
3601 DWORD old_status; | |
3602 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_READONLY, &old_status) ) | |
3603 fatal("Could not enable polling page"); | |
3604 }; | |
3605 | |
3606 | |
3607 int os::stat(const char *path, struct stat *sbuf) { | |
3608 char pathbuf[MAX_PATH]; | |
3609 if (strlen(path) > MAX_PATH - 1) { | |
3610 errno = ENAMETOOLONG; | |
3611 return -1; | |
3612 } | |
1980
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|
3613 os::native_path(strcpy(pathbuf, path)); |
0 | 3614 int ret = ::stat(pathbuf, sbuf); |
3615 if (sbuf != NULL && UseUTCFileTimestamp) { | |
3616 // Fix for 6539723. st_mtime returned from stat() is dependent on | |
3617 // the system timezone and so can return different values for the | |
3618 // same file if/when daylight savings time changes. This adjustment | |
3619 // makes sure the same timestamp is returned regardless of the TZ. | |
3620 // | |
3621 // See: | |
3622 // http://msdn.microsoft.com/library/ | |
3623 // default.asp?url=/library/en-us/sysinfo/base/ | |
3624 // time_zone_information_str.asp | |
3625 // and | |
3626 // http://msdn.microsoft.com/library/default.asp?url= | |
3627 // /library/en-us/sysinfo/base/settimezoneinformation.asp | |
3628 // | |
3629 // NOTE: there is a insidious bug here: If the timezone is changed | |
3630 // after the call to stat() but before 'GetTimeZoneInformation()', then | |
3631 // the adjustment we do here will be wrong and we'll return the wrong | |
3632 // value (which will likely end up creating an invalid class data | |
3633 // archive). Absent a better API for this, or some time zone locking | |
3634 // mechanism, we'll have to live with this risk. | |
3635 TIME_ZONE_INFORMATION tz; | |
3636 DWORD tzid = GetTimeZoneInformation(&tz); | |
3637 int daylightBias = | |
3638 (tzid == TIME_ZONE_ID_DAYLIGHT) ? tz.DaylightBias : tz.StandardBias; | |
3639 sbuf->st_mtime += (tz.Bias + daylightBias) * 60; | |
3640 } | |
3641 return ret; | |
3642 } | |
3643 | |
3644 | |
3645 #define FT2INT64(ft) \ | |
3646 ((jlong)((jlong)(ft).dwHighDateTime << 32 | (julong)(ft).dwLowDateTime)) | |
3647 | |
3648 | |
3649 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
3650 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
3651 // of a thread. | |
3652 // | |
3653 // current_thread_cpu_time() and thread_cpu_time(Thread*) returns | |
3654 // the fast estimate available on the platform. | |
3655 | |
3656 // current_thread_cpu_time() is not optimized for Windows yet | |
3657 jlong os::current_thread_cpu_time() { | |
3658 // return user + sys since the cost is the same | |
3659 return os::thread_cpu_time(Thread::current(), true /* user+sys */); | |
3660 } | |
3661 | |
3662 jlong os::thread_cpu_time(Thread* thread) { | |
3663 // consistent with what current_thread_cpu_time() returns. | |
3664 return os::thread_cpu_time(thread, true /* user+sys */); | |
3665 } | |
3666 | |
3667 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
3668 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
3669 } | |
3670 | |
3671 jlong os::thread_cpu_time(Thread* thread, bool user_sys_cpu_time) { | |
3672 // This code is copy from clasic VM -> hpi::sysThreadCPUTime | |
3673 // If this function changes, os::is_thread_cpu_time_supported() should too | |
3674 if (os::win32::is_nt()) { | |
3675 FILETIME CreationTime; | |
3676 FILETIME ExitTime; | |
3677 FILETIME KernelTime; | |
3678 FILETIME UserTime; | |
3679 | |
3680 if ( GetThreadTimes(thread->osthread()->thread_handle(), | |
3681 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
3682 return -1; | |
3683 else | |
3684 if (user_sys_cpu_time) { | |
3685 return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100; | |
3686 } else { | |
3687 return FT2INT64(UserTime) * 100; | |
3688 } | |
3689 } else { | |
3690 return (jlong) timeGetTime() * 1000000; | |
3691 } | |
3692 } | |
3693 | |
3694 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
3695 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
3696 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
3697 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
3698 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
3699 } | |
3700 | |
3701 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
3702 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
3703 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
3704 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
3705 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
3706 } | |
3707 | |
3708 bool os::is_thread_cpu_time_supported() { | |
3709 // see os::thread_cpu_time | |
3710 if (os::win32::is_nt()) { | |
3711 FILETIME CreationTime; | |
3712 FILETIME ExitTime; | |
3713 FILETIME KernelTime; | |
3714 FILETIME UserTime; | |
3715 | |
3716 if ( GetThreadTimes(GetCurrentThread(), | |
3717 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
3718 return false; | |
3719 else | |
3720 return true; | |
3721 } else { | |
3722 return false; | |
3723 } | |
3724 } | |
3725 | |
3726 // Windows does't provide a loadavg primitive so this is stubbed out for now. | |
3727 // It does have primitives (PDH API) to get CPU usage and run queue length. | |
3728 // "\\Processor(_Total)\\% Processor Time", "\\System\\Processor Queue Length" | |
3729 // If we wanted to implement loadavg on Windows, we have a few options: | |
3730 // | |
3731 // a) Query CPU usage and run queue length and "fake" an answer by | |
3732 // returning the CPU usage if it's under 100%, and the run queue | |
3733 // length otherwise. It turns out that querying is pretty slow | |
3734 // on Windows, on the order of 200 microseconds on a fast machine. | |
3735 // Note that on the Windows the CPU usage value is the % usage | |
3736 // since the last time the API was called (and the first call | |
3737 // returns 100%), so we'd have to deal with that as well. | |
3738 // | |
3739 // b) Sample the "fake" answer using a sampling thread and store | |
3740 // the answer in a global variable. The call to loadavg would | |
3741 // just return the value of the global, avoiding the slow query. | |
3742 // | |
3743 // c) Sample a better answer using exponential decay to smooth the | |
3744 // value. This is basically the algorithm used by UNIX kernels. | |
3745 // | |
3746 // Note that sampling thread starvation could affect both (b) and (c). | |
3747 int os::loadavg(double loadavg[], int nelem) { | |
3748 return -1; | |
3749 } | |
3750 | |
3751 | |
3752 // DontYieldALot=false by default: dutifully perform all yields as requested by JVM_Yield() | |
3753 bool os::dont_yield() { | |
3754 return DontYieldALot; | |
3755 } | |
3756 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3757 // This method is a slightly reworked copy of JDK's sysOpen |
828eafbd85cc
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diff
changeset
|
3758 // from src/windows/hpi/src/sys_api_md.c |
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|
3759 |
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diff
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|
3760 int os::open(const char *path, int oflag, int mode) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3761 char pathbuf[MAX_PATH]; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
3762 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
3763 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3764 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
3765 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3766 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3767 os::native_path(strcpy(pathbuf, path)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3768 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
|
3769 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3770 |
0 | 3771 // Is a (classpath) directory empty? |
3772 bool os::dir_is_empty(const char* path) { | |
3773 WIN32_FIND_DATA fd; | |
3774 HANDLE f = FindFirstFile(path, &fd); | |
3775 if (f == INVALID_HANDLE_VALUE) { | |
3776 return true; | |
3777 } | |
3778 FindClose(f); | |
3779 return false; | |
3780 } | |
3781 | |
3782 // create binary file, rewriting existing file if required | |
3783 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
3784 int oflags = _O_CREAT | _O_WRONLY | _O_BINARY; | |
3785 if (!rewrite_existing) { | |
3786 oflags |= _O_EXCL; | |
3787 } | |
3788 return ::open(path, oflags, _S_IREAD | _S_IWRITE); | |
3789 } | |
3790 | |
3791 // return current position of file pointer | |
3792 jlong os::current_file_offset(int fd) { | |
3793 return (jlong)::_lseeki64(fd, (__int64)0L, SEEK_CUR); | |
3794 } | |
3795 | |
3796 // move file pointer to the specified offset | |
3797 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
3798 return (jlong)::_lseeki64(fd, (__int64)offset, SEEK_SET); | |
3799 } | |
3800 | |
3801 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3802 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
|
3803 return (jlong) ::_lseeki64(fd, offset, whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3804 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3805 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3806 // 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
|
3807 // from src/windows/hpi/src/path_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3808 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3809 /* 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
|
3810 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
|
3811 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
|
3812 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
parents:
1972
diff
changeset
|
3813 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
|
3814 treat double-byte lead characters correctly. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3815 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3816 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
|
3817 longer than the original. There is no error return; this operation always |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3818 succeeds. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3819 char * os::native_path(char *path) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3820 char *src = path, *dst = path, *end = path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3821 char *colon = NULL; /* If a drive specifier is found, this will |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3822 point to the colon following the drive |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3823 letter */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3824 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3825 /* Assumption: '/', '\\', ':', and drive letters are never lead bytes */ |
828eafbd85cc
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ikrylov
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diff
changeset
|
3826 assert(((!::IsDBCSLeadByte('/')) |
828eafbd85cc
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ikrylov
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diff
changeset
|
3827 && (!::IsDBCSLeadByte('\\')) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3828 && (!::IsDBCSLeadByte(':'))), |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3829 "Illegal lead byte"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3830 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3831 /* Check for leading separators */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3832 #define isfilesep(c) ((c) == '/' || (c) == '\\') |
828eafbd85cc
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ikrylov
parents:
1972
diff
changeset
|
3833 while (isfilesep(*src)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3834 src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3835 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3836 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3837 if (::isalpha(*src) && !::IsDBCSLeadByte(*src) && src[1] == ':') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3838 /* 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
|
3839 hack is necessary to support file URLs containing drive |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3840 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
|
3841 "/c:/path" can be used as an alternative to "c:/path". */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3842 *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3843 colon = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3844 *dst++ = ':'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3845 src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3846 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3847 src = path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3848 if (isfilesep(src[0]) && isfilesep(src[1])) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3849 /* 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
|
3850 second separator so that further separators will be collapsed |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3851 into the second separator. The result will be a pathname |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3852 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
|
3853 src = dst = path + 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3854 path[0] = '\\'; /* Force first separator to '\\' */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3855 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3856 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3857 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3858 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3859 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3860 /* 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
|
3861 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
|
3862 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
|
3863 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
|
3864 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3865 while (*src != '\0') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3866 if (isfilesep(*src)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3867 *dst++ = '\\'; src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3868 while (isfilesep(*src)) src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3869 if (*src == '\0') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3870 /* Check for trailing separator */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3871 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3872 if (colon == dst - 2) break; /* "z:\\" */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3873 if (dst == path + 1) break; /* "\\" */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3874 if (dst == path + 2 && isfilesep(path[0])) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3875 /* "\\\\" is not collapsed to "\\" because "\\\\" marks the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3876 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
|
3877 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
|
3878 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
|
3879 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
|
3880 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
|
3881 directory of the current drive. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3882 break; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3883 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3884 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
|
3885 remove trailing separator */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3886 break; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3887 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3888 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3889 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3890 if (::IsDBCSLeadByte(*src)) { /* Copy a double-byte character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3891 *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3892 if (*src) *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3893 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3894 } else { /* Copy a single-byte character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3895 char c = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3896 *dst++ = c; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3897 /* Space is not a legal ending character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3898 if (c != ' ') end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3899 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3900 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3901 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3902 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3903 *end = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3904 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3905 /* 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
|
3906 if (colon == dst - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3907 path[2] = '.'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3908 path[3] = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3909 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3910 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3911 #ifdef DEBUG |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3912 jio_fprintf(stderr, "sysNativePath: %s\n", path); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3913 #endif DEBUG |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3914 return path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3915 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3916 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3917 // 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
|
3918 // 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
|
3919 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3920 int os::ftruncate(int fd, jlong length) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3921 HANDLE h = (HANDLE)::_get_osfhandle(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3922 long high = (long)(length >> 32); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3923 DWORD ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3924 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3925 if (h == (HANDLE)(-1)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3926 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3927 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3928 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3929 ret = ::SetFilePointer(h, (long)(length), &high, FILE_BEGIN); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3930 if ((ret == 0xFFFFFFFF) && (::GetLastError() != NO_ERROR)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3931 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3932 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3933 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3934 if (::SetEndOfFile(h) == FALSE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3935 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3936 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3937 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3938 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3939 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3940 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3941 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3942 // 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
|
3943 // 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
|
3944 // 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
|
3945 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3946 int os::fsync(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3947 HANDLE handle = (HANDLE)::_get_osfhandle(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3948 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3949 if ( (!::FlushFileBuffers(handle)) && |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3950 (GetLastError() != ERROR_ACCESS_DENIED) ) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3951 /* from winerror.h */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3952 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3953 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3954 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3955 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3956 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3957 static int nonSeekAvailable(int, long *); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3958 static int stdinAvailable(int, long *); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3959 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3960 #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
|
3961 #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
|
3962 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3963 // 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
|
3964 // 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
|
3965 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3966 int os::available(int fd, jlong *bytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3967 jlong cur, end; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3968 struct _stati64 stbuf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3969 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3970 if (::_fstati64(fd, &stbuf64) >= 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3971 int mode = stbuf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3972 if (S_ISCHR(mode) || S_ISFIFO(mode)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3973 int ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3974 long lpbytes; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3975 if (fd == 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3976 ret = stdinAvailable(fd, &lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3977 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3978 ret = nonSeekAvailable(fd, &lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3979 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3980 (*bytes) = (jlong)(lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3981 return ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3982 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3983 if ((cur = ::_lseeki64(fd, 0L, SEEK_CUR)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3984 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3985 } 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
|
3986 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3987 } else if (::_lseeki64(fd, cur, SEEK_SET) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3988 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3989 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3990 *bytes = end - cur; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3991 return TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3992 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3993 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3994 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3995 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3996 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3997 // 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
|
3998 // 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
|
3999 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4000 static int nonSeekAvailable(int fd, long *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4001 /* 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
|
4002 * (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
|
4003 * connected to an exec'd process). |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4004 * Standard Input is a special case. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4005 * |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4006 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4007 HANDLE han; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4008 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4009 if ((han = (HANDLE) ::_get_osfhandle(fd)) == (HANDLE)(-1)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4010 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4011 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4012 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4013 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
|
4014 /* 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
|
4015 * 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
|
4016 * 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
|
4017 * The only alternative is to raise an Exception, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4018 * which isn't really warranted. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4019 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4020 if (::GetLastError() != ERROR_BROKEN_PIPE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4021 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4022 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4023 *pbytes = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4024 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4025 return TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4026 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4027 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4028 #define MAX_INPUT_EVENTS 2000 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4029 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4030 // 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
|
4031 // 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
|
4032 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4033 static int stdinAvailable(int fd, long *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4034 HANDLE han; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4035 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
|
4036 DWORD numEvents = 0; /* Number of events in buffer */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4037 DWORD i = 0; /* Loop index */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4038 DWORD curLength = 0; /* Position marker */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4039 DWORD actualLength = 0; /* Number of bytes readable */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4040 BOOL error = FALSE; /* Error holder */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4041 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
|
4042 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4043 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
|
4044 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4045 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4046 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4047 /* 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
|
4048 error = ::GetNumberOfConsoleInputEvents(han, &numEvents); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4049 if (error == 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4050 return nonSeekAvailable(fd, pbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4051 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4052 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4053 /* 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
|
4054 if (numEvents > MAX_INPUT_EVENTS) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4055 numEvents = MAX_INPUT_EVENTS; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4056 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4057 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4058 lpBuffer = (INPUT_RECORD *)os::malloc(numEvents * sizeof(INPUT_RECORD)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4059 if (lpBuffer == NULL) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4060 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4061 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4062 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4063 error = ::PeekConsoleInput(han, lpBuffer, numEvents, &numEventsRead); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4064 if (error == 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4065 os::free(lpBuffer); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4066 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4067 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4068 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4069 /* 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
|
4070 for(i=0; i<numEvents; i++) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4071 if (lpBuffer[i].EventType == KEY_EVENT) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4072 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4073 KEY_EVENT_RECORD *keyRecord = (KEY_EVENT_RECORD *) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4074 &(lpBuffer[i].Event); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4075 if (keyRecord->bKeyDown == TRUE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4076 CHAR *keyPressed = (CHAR *) &(keyRecord->uChar); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4077 curLength++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4078 if (*keyPressed == '\r') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4079 actualLength = curLength; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4080 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4081 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4082 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4083 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4084 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4085 if(lpBuffer != NULL) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4086 os::free(lpBuffer); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4087 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4088 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4089 *pbytes = (long) actualLength; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4090 return TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4091 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4092 |
0 | 4093 // Map a block of memory. |
4094 char* os::map_memory(int fd, const char* file_name, size_t file_offset, | |
4095 char *addr, size_t bytes, bool read_only, | |
4096 bool allow_exec) { | |
4097 HANDLE hFile; | |
4098 char* base; | |
4099 | |
4100 hFile = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, | |
4101 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); | |
4102 if (hFile == NULL) { | |
4103 if (PrintMiscellaneous && Verbose) { | |
4104 DWORD err = GetLastError(); | |
4105 tty->print_cr("CreateFile() failed: GetLastError->%ld."); | |
4106 } | |
4107 return NULL; | |
4108 } | |
4109 | |
4110 if (allow_exec) { | |
4111 // CreateFileMapping/MapViewOfFileEx can't map executable memory | |
4112 // unless it comes from a PE image (which the shared archive is not.) | |
4113 // Even VirtualProtect refuses to give execute access to mapped memory | |
4114 // that was not previously executable. | |
4115 // | |
4116 // Instead, stick the executable region in anonymous memory. Yuck. | |
4117 // Penalty is that ~4 pages will not be shareable - in the future | |
4118 // we might consider DLLizing the shared archive with a proper PE | |
4119 // header so that mapping executable + sharing is possible. | |
4120 | |
4121 base = (char*) VirtualAlloc(addr, bytes, MEM_COMMIT | MEM_RESERVE, | |
4122 PAGE_READWRITE); | |
4123 if (base == NULL) { | |
4124 if (PrintMiscellaneous && Verbose) { | |
4125 DWORD err = GetLastError(); | |
4126 tty->print_cr("VirtualAlloc() failed: GetLastError->%ld.", err); | |
4127 } | |
4128 CloseHandle(hFile); | |
4129 return NULL; | |
4130 } | |
4131 | |
4132 DWORD bytes_read; | |
4133 OVERLAPPED overlapped; | |
4134 overlapped.Offset = (DWORD)file_offset; | |
4135 overlapped.OffsetHigh = 0; | |
4136 overlapped.hEvent = NULL; | |
4137 // ReadFile guarantees that if the return value is true, the requested | |
4138 // number of bytes were read before returning. | |
4139 bool res = ReadFile(hFile, base, (DWORD)bytes, &bytes_read, &overlapped) != 0; | |
4140 if (!res) { | |
4141 if (PrintMiscellaneous && Verbose) { | |
4142 DWORD err = GetLastError(); | |
4143 tty->print_cr("ReadFile() failed: GetLastError->%ld.", err); | |
4144 } | |
4145 release_memory(base, bytes); | |
4146 CloseHandle(hFile); | |
4147 return NULL; | |
4148 } | |
4149 } else { | |
4150 HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, | |
4151 NULL /*file_name*/); | |
4152 if (hMap == NULL) { | |
4153 if (PrintMiscellaneous && Verbose) { | |
4154 DWORD err = GetLastError(); | |
4155 tty->print_cr("CreateFileMapping() failed: GetLastError->%ld."); | |
4156 } | |
4157 CloseHandle(hFile); | |
4158 return NULL; | |
4159 } | |
4160 | |
4161 DWORD access = read_only ? FILE_MAP_READ : FILE_MAP_COPY; | |
4162 base = (char*)MapViewOfFileEx(hMap, access, 0, (DWORD)file_offset, | |
4163 (DWORD)bytes, addr); | |
4164 if (base == NULL) { | |
4165 if (PrintMiscellaneous && Verbose) { | |
4166 DWORD err = GetLastError(); | |
4167 tty->print_cr("MapViewOfFileEx() failed: GetLastError->%ld.", err); | |
4168 } | |
4169 CloseHandle(hMap); | |
4170 CloseHandle(hFile); | |
4171 return NULL; | |
4172 } | |
4173 | |
4174 if (CloseHandle(hMap) == 0) { | |
4175 if (PrintMiscellaneous && Verbose) { | |
4176 DWORD err = GetLastError(); | |
4177 tty->print_cr("CloseHandle(hMap) failed: GetLastError->%ld.", err); | |
4178 } | |
4179 CloseHandle(hFile); | |
4180 return base; | |
4181 } | |
4182 } | |
4183 | |
4184 if (allow_exec) { | |
4185 DWORD old_protect; | |
4186 DWORD exec_access = read_only ? PAGE_EXECUTE_READ : PAGE_EXECUTE_READWRITE; | |
4187 bool res = VirtualProtect(base, bytes, exec_access, &old_protect) != 0; | |
4188 | |
4189 if (!res) { | |
4190 if (PrintMiscellaneous && Verbose) { | |
4191 DWORD err = GetLastError(); | |
4192 tty->print_cr("VirtualProtect() failed: GetLastError->%ld.", err); | |
4193 } | |
4194 // Don't consider this a hard error, on IA32 even if the | |
4195 // VirtualProtect fails, we should still be able to execute | |
4196 CloseHandle(hFile); | |
4197 return base; | |
4198 } | |
4199 } | |
4200 | |
4201 if (CloseHandle(hFile) == 0) { | |
4202 if (PrintMiscellaneous && Verbose) { | |
4203 DWORD err = GetLastError(); | |
4204 tty->print_cr("CloseHandle(hFile) failed: GetLastError->%ld.", err); | |
4205 } | |
4206 return base; | |
4207 } | |
4208 | |
4209 return base; | |
4210 } | |
4211 | |
4212 | |
4213 // Remap a block of memory. | |
4214 char* os::remap_memory(int fd, const char* file_name, size_t file_offset, | |
4215 char *addr, size_t bytes, bool read_only, | |
4216 bool allow_exec) { | |
4217 // This OS does not allow existing memory maps to be remapped so we | |
4218 // have to unmap the memory before we remap it. | |
4219 if (!os::unmap_memory(addr, bytes)) { | |
4220 return NULL; | |
4221 } | |
4222 | |
4223 // There is a very small theoretical window between the unmap_memory() | |
4224 // call above and the map_memory() call below where a thread in native | |
4225 // code may be able to access an address that is no longer mapped. | |
4226 | |
4227 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
4228 allow_exec); | |
4229 } | |
4230 | |
4231 | |
4232 // Unmap a block of memory. | |
4233 // Returns true=success, otherwise false. | |
4234 | |
4235 bool os::unmap_memory(char* addr, size_t bytes) { | |
4236 BOOL result = UnmapViewOfFile(addr); | |
4237 if (result == 0) { | |
4238 if (PrintMiscellaneous && Verbose) { | |
4239 DWORD err = GetLastError(); | |
4240 tty->print_cr("UnmapViewOfFile() failed: GetLastError->%ld.", err); | |
4241 } | |
4242 return false; | |
4243 } | |
4244 return true; | |
4245 } | |
4246 | |
4247 void os::pause() { | |
4248 char filename[MAX_PATH]; | |
4249 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
4250 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
4251 } else { | |
4252 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
4253 } | |
4254 | |
4255 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
4256 if (fd != -1) { | |
4257 struct stat buf; | |
1980
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diff
changeset
|
4258 ::close(fd); |
0 | 4259 while (::stat(filename, &buf) == 0) { |
4260 Sleep(100); | |
4261 } | |
4262 } else { | |
4263 jio_fprintf(stderr, | |
4264 "Could not open pause file '%s', continuing immediately.\n", filename); | |
4265 } | |
4266 } | |
4267 | |
4268 // An Event wraps a win32 "CreateEvent" kernel handle. | |
4269 // | |
4270 // We have a number of choices regarding "CreateEvent" win32 handle leakage: | |
4271 // | |
4272 // 1: When a thread dies return the Event to the EventFreeList, clear the ParkHandle | |
4273 // field, and call CloseHandle() on the win32 event handle. Unpark() would | |
4274 // need to be modified to tolerate finding a NULL (invalid) win32 event handle. | |
4275 // In addition, an unpark() operation might fetch the handle field, but the | |
4276 // event could recycle between the fetch and the SetEvent() operation. | |
4277 // SetEvent() would either fail because the handle was invalid, or inadvertently work, | |
4278 // as the win32 handle value had been recycled. In an ideal world calling SetEvent() | |
4279 // on an stale but recycled handle would be harmless, but in practice this might | |
4280 // confuse other non-Sun code, so it's not a viable approach. | |
4281 // | |
4282 // 2: Once a win32 event handle is associated with an Event, it remains associated | |
4283 // with the Event. The event handle is never closed. This could be construed | |
4284 // as handle leakage, but only up to the maximum # of threads that have been extant | |
4285 // at any one time. This shouldn't be an issue, as windows platforms typically | |
4286 // permit a process to have hundreds of thousands of open handles. | |
4287 // | |
4288 // 3: Same as (1), but periodically, at stop-the-world time, rundown the EventFreeList | |
4289 // and release unused handles. | |
4290 // | |
4291 // 4: Add a CRITICAL_SECTION to the Event to protect LD+SetEvent from LD;ST(null);CloseHandle. | |
4292 // It's not clear, however, that we wouldn't be trading one type of leak for another. | |
4293 // | |
4294 // 5. Use an RCU-like mechanism (Read-Copy Update). | |
4295 // Or perhaps something similar to Maged Michael's "Hazard pointers". | |
4296 // | |
4297 // We use (2). | |
4298 // | |
4299 // TODO-FIXME: | |
4300 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the objectmonitor implementation. | |
4301 // 2. Consider wrapping the WaitForSingleObject(Ex) calls in SEH try/finally blocks | |
4302 // to recover from (or at least detect) the dreaded Windows 841176 bug. | |
4303 // 3. Collapse the interrupt_event, the JSR166 parker event, and the objectmonitor ParkEvent | |
4304 // into a single win32 CreateEvent() handle. | |
4305 // | |
4306 // _Event transitions in park() | |
4307 // -1 => -1 : illegal | |
4308 // 1 => 0 : pass - return immediately | |
4309 // 0 => -1 : block | |
4310 // | |
4311 // _Event serves as a restricted-range semaphore : | |
4312 // -1 : thread is blocked | |
4313 // 0 : neutral - thread is running or ready | |
4314 // 1 : signaled - thread is running or ready | |
4315 // | |
4316 // Another possible encoding of _Event would be | |
4317 // with explicit "PARKED" and "SIGNALED" bits. | |
4318 | |
4319 int os::PlatformEvent::park (jlong Millis) { | |
4320 guarantee (_ParkHandle != NULL , "Invariant") ; | |
4321 guarantee (Millis > 0 , "Invariant") ; | |
4322 int v ; | |
4323 | |
4324 // CONSIDER: defer assigning a CreateEvent() handle to the Event until | |
4325 // the initial park() operation. | |
4326 | |
4327 for (;;) { | |
4328 v = _Event ; | |
4329 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
4330 } | |
4331 guarantee ((v == 0) || (v == 1), "invariant") ; | |
4332 if (v != 0) return OS_OK ; | |
4333 | |
4334 // Do this the hard way by blocking ... | |
4335 // TODO: consider a brief spin here, gated on the success of recent | |
4336 // spin attempts by this thread. | |
4337 // | |
4338 // We decompose long timeouts into series of shorter timed waits. | |
4339 // Evidently large timo values passed in WaitForSingleObject() are problematic on some | |
4340 // versions of Windows. See EventWait() for details. This may be superstition. Or not. | |
4341 // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time | |
4342 // with os::javaTimeNanos(). Furthermore, we assume that spurious returns from | |
4343 // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend | |
4344 // to happen early in the wait interval. Specifically, after a spurious wakeup (rv == | |
4345 // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate | |
4346 // for the already waited time. This policy does not admit any new outcomes. | |
4347 // In the future, however, we might want to track the accumulated wait time and | |
4348 // adjust Millis accordingly if we encounter a spurious wakeup. | |
4349 | |
4350 const int MAXTIMEOUT = 0x10000000 ; | |
4351 DWORD rv = WAIT_TIMEOUT ; | |
4352 while (_Event < 0 && Millis > 0) { | |
4353 DWORD prd = Millis ; // set prd = MAX (Millis, MAXTIMEOUT) | |
4354 if (Millis > MAXTIMEOUT) { | |
4355 prd = MAXTIMEOUT ; | |
4356 } | |
4357 rv = ::WaitForSingleObject (_ParkHandle, prd) ; | |
4358 assert (rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed") ; | |
4359 if (rv == WAIT_TIMEOUT) { | |
4360 Millis -= prd ; | |
4361 } | |
4362 } | |
4363 v = _Event ; | |
4364 _Event = 0 ; | |
4365 OrderAccess::fence() ; | |
4366 // If we encounter a nearly simultanous timeout expiry and unpark() | |
4367 // we return OS_OK indicating we awoke via unpark(). | |
4368 // Implementor's license -- returning OS_TIMEOUT would be equally valid, however. | |
4369 return (v >= 0) ? OS_OK : OS_TIMEOUT ; | |
4370 } | |
4371 | |
4372 void os::PlatformEvent::park () { | |
4373 guarantee (_ParkHandle != NULL, "Invariant") ; | |
4374 // Invariant: Only the thread associated with the Event/PlatformEvent | |
4375 // may call park(). | |
4376 int v ; | |
4377 for (;;) { | |
4378 v = _Event ; | |
4379 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
4380 } | |
4381 guarantee ((v == 0) || (v == 1), "invariant") ; | |
4382 if (v != 0) return ; | |
4383 | |
4384 // Do this the hard way by blocking ... | |
4385 // TODO: consider a brief spin here, gated on the success of recent | |
4386 // spin attempts by this thread. | |
4387 while (_Event < 0) { | |
4388 DWORD rv = ::WaitForSingleObject (_ParkHandle, INFINITE) ; | |
4389 assert (rv == WAIT_OBJECT_0, "WaitForSingleObject failed") ; | |
4390 } | |
4391 | |
4392 // Usually we'll find _Event == 0 at this point, but as | |
4393 // an optional optimization we clear it, just in case can | |
4394 // multiple unpark() operations drove _Event up to 1. | |
4395 _Event = 0 ; | |
4396 OrderAccess::fence() ; | |
4397 guarantee (_Event >= 0, "invariant") ; | |
4398 } | |
4399 | |
4400 void os::PlatformEvent::unpark() { | |
4401 guarantee (_ParkHandle != NULL, "Invariant") ; | |
4402 int v ; | |
4403 for (;;) { | |
4404 v = _Event ; // Increment _Event if it's < 1. | |
4405 if (v > 0) { | |
4406 // If it's already signaled just return. | |
4407 // The LD of _Event could have reordered or be satisfied | |
4408 // by a read-aside from this processor's write buffer. | |
4409 // To avoid problems execute a barrier and then | |
4410 // ratify the value. A degenerate CAS() would also work. | |
4411 // Viz., CAS (v+0, &_Event, v) == v). | |
4412 OrderAccess::fence() ; | |
4413 if (_Event == v) return ; | |
4414 continue ; | |
4415 } | |
4416 if (Atomic::cmpxchg (v+1, &_Event, v) == v) break ; | |
4417 } | |
4418 if (v < 0) { | |
4419 ::SetEvent (_ParkHandle) ; | |
4420 } | |
4421 } | |
4422 | |
4423 | |
4424 // JSR166 | |
4425 // ------------------------------------------------------- | |
4426 | |
4427 /* | |
4428 * The Windows implementation of Park is very straightforward: Basic | |
4429 * operations on Win32 Events turn out to have the right semantics to | |
4430 * use them directly. We opportunistically resuse the event inherited | |
4431 * from Monitor. | |
4432 */ | |
4433 | |
4434 | |
4435 void Parker::park(bool isAbsolute, jlong time) { | |
4436 guarantee (_ParkEvent != NULL, "invariant") ; | |
4437 // First, demultiplex/decode time arguments | |
4438 if (time < 0) { // don't wait | |
4439 return; | |
4440 } | |
1865
1c352af0135d
6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
acorn
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1681
diff
changeset
|
4441 else if (time == 0 && !isAbsolute) { |
0 | 4442 time = INFINITE; |
4443 } | |
4444 else if (isAbsolute) { | |
4445 time -= os::javaTimeMillis(); // convert to relative time | |
4446 if (time <= 0) // already elapsed | |
4447 return; | |
4448 } | |
4449 else { // relative | |
4450 time /= 1000000; // Must coarsen from nanos to millis | |
4451 if (time == 0) // Wait for the minimal time unit if zero | |
4452 time = 1; | |
4453 } | |
4454 | |
4455 JavaThread* thread = (JavaThread*)(Thread::current()); | |
4456 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
4457 JavaThread *jt = (JavaThread *)thread; | |
4458 | |
4459 // Don't wait if interrupted or already triggered | |
4460 if (Thread::is_interrupted(thread, false) || | |
4461 WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) { | |
4462 ResetEvent(_ParkEvent); | |
4463 return; | |
4464 } | |
4465 else { | |
4466 ThreadBlockInVM tbivm(jt); | |
4467 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
4468 jt->set_suspend_equivalent(); | |
4469 | |
4470 WaitForSingleObject(_ParkEvent, time); | |
4471 ResetEvent(_ParkEvent); | |
4472 | |
4473 // If externally suspended while waiting, re-suspend | |
4474 if (jt->handle_special_suspend_equivalent_condition()) { | |
4475 jt->java_suspend_self(); | |
4476 } | |
4477 } | |
4478 } | |
4479 | |
4480 void Parker::unpark() { | |
4481 guarantee (_ParkEvent != NULL, "invariant") ; | |
4482 SetEvent(_ParkEvent); | |
4483 } | |
4484 | |
4485 // Run the specified command in a separate process. Return its exit value, | |
4486 // or -1 on failure (e.g. can't create a new process). | |
4487 int os::fork_and_exec(char* cmd) { | |
4488 STARTUPINFO si; | |
4489 PROCESS_INFORMATION pi; | |
4490 | |
4491 memset(&si, 0, sizeof(si)); | |
4492 si.cb = sizeof(si); | |
4493 memset(&pi, 0, sizeof(pi)); | |
4494 BOOL rslt = CreateProcess(NULL, // executable name - use command line | |
4495 cmd, // command line | |
4496 NULL, // process security attribute | |
4497 NULL, // thread security attribute | |
4498 TRUE, // inherits system handles | |
4499 0, // no creation flags | |
4500 NULL, // use parent's environment block | |
4501 NULL, // use parent's starting directory | |
4502 &si, // (in) startup information | |
4503 &pi); // (out) process information | |
4504 | |
4505 if (rslt) { | |
4506 // Wait until child process exits. | |
4507 WaitForSingleObject(pi.hProcess, INFINITE); | |
4508 | |
4509 DWORD exit_code; | |
4510 GetExitCodeProcess(pi.hProcess, &exit_code); | |
4511 | |
4512 // Close process and thread handles. | |
4513 CloseHandle(pi.hProcess); | |
4514 CloseHandle(pi.hThread); | |
4515 | |
4516 return (int)exit_code; | |
4517 } else { | |
4518 return -1; | |
4519 } | |
4520 } | |
4521 | |
4522 //-------------------------------------------------------------------------------------------------- | |
4523 // Non-product code | |
4524 | |
4525 static int mallocDebugIntervalCounter = 0; | |
4526 static int mallocDebugCounter = 0; | |
4527 bool os::check_heap(bool force) { | |
4528 if (++mallocDebugCounter < MallocVerifyStart && !force) return true; | |
4529 if (++mallocDebugIntervalCounter >= MallocVerifyInterval || force) { | |
4530 // Note: HeapValidate executes two hardware breakpoints when it finds something | |
4531 // wrong; at these points, eax contains the address of the offending block (I think). | |
4532 // To get to the exlicit error message(s) below, just continue twice. | |
4533 HANDLE heap = GetProcessHeap(); | |
4534 { HeapLock(heap); | |
4535 PROCESS_HEAP_ENTRY phe; | |
4536 phe.lpData = NULL; | |
4537 while (HeapWalk(heap, &phe) != 0) { | |
4538 if ((phe.wFlags & PROCESS_HEAP_ENTRY_BUSY) && | |
4539 !HeapValidate(heap, 0, phe.lpData)) { | |
4540 tty->print_cr("C heap has been corrupted (time: %d allocations)", mallocDebugCounter); | |
4541 tty->print_cr("corrupted block near address %#x, length %d", phe.lpData, phe.cbData); | |
4542 fatal("corrupted C heap"); | |
4543 } | |
4544 } | |
4545 int err = GetLastError(); | |
4546 if (err != ERROR_NO_MORE_ITEMS && err != ERROR_CALL_NOT_IMPLEMENTED) { | |
1490
f03d0a26bf83
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parents:
1353
diff
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|
4547 fatal(err_msg("heap walk aborted with error %d", err)); |
0 | 4548 } |
4549 HeapUnlock(heap); | |
4550 } | |
4551 mallocDebugIntervalCounter = 0; | |
4552 } | |
4553 return true; | |
4554 } | |
4555 | |
4556 | |
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126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
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diff
changeset
|
4557 bool os::find(address addr, outputStream* st) { |
0 | 4558 // Nothing yet |
4559 return false; | |
4560 } | |
4561 | |
4562 LONG WINAPI os::win32::serialize_fault_filter(struct _EXCEPTION_POINTERS* e) { | |
4563 DWORD exception_code = e->ExceptionRecord->ExceptionCode; | |
4564 | |
4565 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
4566 JavaThread* thread = (JavaThread*)ThreadLocalStorage::get_thread_slow(); | |
4567 PEXCEPTION_RECORD exceptionRecord = e->ExceptionRecord; | |
4568 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
4569 | |
4570 if (os::is_memory_serialize_page(thread, addr)) | |
4571 return EXCEPTION_CONTINUE_EXECUTION; | |
4572 } | |
4573 | |
4574 return EXCEPTION_CONTINUE_SEARCH; | |
4575 } | |
4576 | |
4577 static int getLastErrorString(char *buf, size_t len) | |
4578 { | |
4579 long errval; | |
4580 | |
4581 if ((errval = GetLastError()) != 0) | |
4582 { | |
4583 /* DOS error */ | |
4584 size_t n = (size_t)FormatMessage( | |
4585 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, | |
4586 NULL, | |
4587 errval, | |
4588 0, | |
4589 buf, | |
4590 (DWORD)len, | |
4591 NULL); | |
4592 if (n > 3) { | |
4593 /* Drop final '.', CR, LF */ | |
4594 if (buf[n - 1] == '\n') n--; | |
4595 if (buf[n - 1] == '\r') n--; | |
4596 if (buf[n - 1] == '.') n--; | |
4597 buf[n] = '\0'; | |
4598 } | |
4599 return (int)n; | |
4600 } | |
4601 | |
4602 if (errno != 0) | |
4603 { | |
4604 /* C runtime error that has no corresponding DOS error code */ | |
4605 const char *s = strerror(errno); | |
4606 size_t n = strlen(s); | |
4607 if (n >= len) n = len - 1; | |
4608 strncpy(buf, s, n); | |
4609 buf[n] = '\0'; | |
4610 return (int)n; | |
4611 } | |
4612 return 0; | |
4613 } | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
changeset
|
4614 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
changeset
|
4615 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
1552
diff
changeset
|
4616 // We don't build a headless jre for Windows |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
changeset
|
4617 bool os::is_headless_jre() { return false; } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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|
4618 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4619 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
4620 typedef CRITICAL_SECTION mutex_t; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4621 #define mutexInit(m) InitializeCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
4622 #define mutexDestroy(m) DeleteCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4623 #define mutexLock(m) EnterCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4624 #define mutexUnlock(m) LeaveCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
4625 |
3429
5def270bc147
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zgu
parents:
2386
diff
changeset
|
4626 static bool sock_initialized = FALSE; |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4627 static mutex_t sockFnTableMutex; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
4628 |
3429
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4629 static void initSock() { |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4630 WSADATA wsadata; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
4631 |
3429
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4632 if (!os::WinSock2Dll::WinSock2Available()) { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4633 jio_fprintf(stderr, "Could not load Winsock 2 (error: %d)\n", |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4634 ::GetLastError()); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4635 return; |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4636 } |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4637 if (sock_initialized == TRUE) return; |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4638 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4639 ::mutexInit(&sockFnTableMutex); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4640 ::mutexLock(&sockFnTableMutex); |
3429
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4641 if (os::WinSock2Dll::WSAStartup(MAKEWORD(1,1), &wsadata) != 0) { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4642 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
|
4643 } |
3429
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4644 sock_initialized = TRUE; |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4645 ::mutexUnlock(&sockFnTableMutex); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4646 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4647 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4648 struct hostent* os::get_host_by_name(char* name) { |
3429
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4649 if (!sock_initialized) { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4650 initSock(); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4651 } |
3429
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4652 if (!os::WinSock2Dll::WinSock2Available()) { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4653 return NULL; |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4654 } |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4655 return (struct hostent*)os::WinSock2Dll::gethostbyname(name); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4656 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4657 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4658 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4659 int os::socket_close(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4660 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4661 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4662 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4663 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4664 int os::socket_available(int fd, jint *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4665 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4666 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4667 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4668 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4669 int os::socket(int domain, int type, int protocol) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4670 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4671 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4672 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4673 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4674 int os::listen(int fd, int count) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4675 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4676 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4677 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4678 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4679 int os::connect(int fd, struct sockaddr *him, int len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4680 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4681 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4682 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4683 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4684 int os::accept(int fd, struct sockaddr *him, int *len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4685 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4686 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4687 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4688 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4689 int os::sendto(int fd, char *buf, int len, int flags, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4690 struct sockaddr *to, int tolen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4691 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4692 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4693 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4694 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4695 int os::recvfrom(int fd, char *buf, int nBytes, int flags, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4696 sockaddr *from, int *fromlen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4697 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4698 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4699 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4700 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4701 int os::recv(int fd, char *buf, int nBytes, int flags) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4702 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4703 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4704 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4705 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4706 int os::send(int fd, char *buf, int nBytes, int flags) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4707 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4708 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4709 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4710 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4711 int os::raw_send(int fd, char *buf, int nBytes, int flags) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4712 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4713 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4714 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4715 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4716 int os::timeout(int fd, long timeout) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4717 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4718 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4719 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4720 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4721 int os::get_host_name(char* name, int namelen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4722 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4723 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4724 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4725 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4726 int os::socket_shutdown(int fd, int howto) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4727 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4728 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4729 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4730 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4731 int os::bind(int fd, struct sockaddr *him, int len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4732 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4733 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4734 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4735 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4736 int os::get_sock_name(int fd, struct sockaddr *him, int *len) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4737 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4738 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4739 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4740 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4741 int os::get_sock_opt(int fd, int level, int optname, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4742 char *optval, int* optlen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4743 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4744 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4745 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4746 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4747 int os::set_sock_opt(int fd, int level, int optname, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4748 const char *optval, int optlen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4749 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4750 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4751 } |
3429
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4752 |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4753 |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4754 // Kernel32 API |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4755 typedef SIZE_T (WINAPI* GetLargePageMinimum_Fn)(void); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4756 GetLargePageMinimum_Fn os::Kernel32Dll::_GetLargePageMinimum = NULL; |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4757 BOOL os::Kernel32Dll::initialized = FALSE; |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4758 SIZE_T os::Kernel32Dll::GetLargePageMinimum() { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4759 assert(initialized && _GetLargePageMinimum != NULL, |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4760 "GetLargePageMinimumAvailable() not yet called"); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4761 return _GetLargePageMinimum(); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4762 } |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4763 |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4764 BOOL os::Kernel32Dll::GetLargePageMinimumAvailable() { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4765 if (!initialized) { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4766 initialize(); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4767 } |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4768 return _GetLargePageMinimum != NULL; |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4769 } |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4770 |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4771 |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4772 #ifndef JDK6_OR_EARLIER |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4773 |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4774 void os::Kernel32Dll::initialize() { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4775 if (!initialized) { |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4776 HMODULE handle = ::GetModuleHandle("Kernel32.dll"); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4777 assert(handle != NULL, "Just check"); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4778 _GetLargePageMinimum = (GetLargePageMinimum_Fn)::GetProcAddress(handle, "GetLargePageMinimum"); |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4779 initialized = TRUE; |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
zgu
parents:
2386
diff
changeset
|
4780 } |
5def270bc147
7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
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4781 } |
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4782 |
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4783 |
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4784 // Kernel32 API |
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4785 inline BOOL os::Kernel32Dll::SwitchToThread() { |
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4786 return ::SwitchToThread(); |
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4787 } |
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4788 |
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4789 inline BOOL os::Kernel32Dll::SwitchToThreadAvailable() { |
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4790 return true; |
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4791 } |
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4792 |
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4793 // Help tools |
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4794 inline BOOL os::Kernel32Dll::HelpToolsAvailable() { |
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4795 return true; |
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|
4796 } |
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4797 |
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4798 inline HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) { |
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4799 return ::CreateToolhelp32Snapshot(dwFlags, th32ProcessId); |
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4800 } |
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4801 |
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4802 inline BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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4803 return ::Module32First(hSnapshot, lpme); |
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4804 } |
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4805 |
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4806 inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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4807 return ::Module32Next(hSnapshot, lpme); |
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4808 } |
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4809 |
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4810 |
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4811 inline BOOL os::Kernel32Dll::GetNativeSystemInfoAvailable() { |
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4812 return true; |
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4813 } |
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4814 |
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4815 inline void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) { |
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4816 ::GetNativeSystemInfo(lpSystemInfo); |
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4817 } |
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4818 |
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4819 // PSAPI API |
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4820 inline BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) { |
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4821 return ::EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded); |
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4822 } |
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4823 |
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4824 inline DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) { |
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4825 return ::GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize); |
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4826 } |
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4827 |
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4828 inline BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) { |
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4829 return ::GetModuleInformation(hProcess, hModule, lpmodinfo, cb); |
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4830 } |
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4831 |
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4832 inline BOOL os::PSApiDll::PSApiAvailable() { |
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4833 return true; |
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|
4834 } |
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|
4835 |
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|
4836 |
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4837 // WinSock2 API |
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4838 inline BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) { |
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4839 return ::WSAStartup(wVersionRequested, lpWSAData); |
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4840 } |
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4841 |
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4842 inline struct hostent* os::WinSock2Dll::gethostbyname(const char *name) { |
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4843 return ::gethostbyname(name); |
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4844 } |
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4845 |
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4846 inline BOOL os::WinSock2Dll::WinSock2Available() { |
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4847 return true; |
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|
4848 } |
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|
4849 |
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4850 // Advapi API |
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4851 inline BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle, |
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4852 BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, |
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4853 PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) { |
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4854 return ::AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState, |
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4855 BufferLength, PreviousState, ReturnLength); |
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4856 } |
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|
4857 |
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4858 inline BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess, |
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4859 PHANDLE TokenHandle) { |
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4860 return ::OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle); |
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4861 } |
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|
4862 |
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4863 inline BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) { |
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4864 return ::LookupPrivilegeValue(lpSystemName, lpName, lpLuid); |
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4865 } |
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4866 |
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4867 inline BOOL os::Advapi32Dll::AdvapiAvailable() { |
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4868 return true; |
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|
4869 } |
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|
4870 |
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|
4871 #else |
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4872 // Kernel32 API |
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4873 typedef BOOL (WINAPI* SwitchToThread_Fn)(void); |
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4874 typedef HANDLE (WINAPI* CreateToolhelp32Snapshot_Fn)(DWORD,DWORD); |
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4875 typedef BOOL (WINAPI* Module32First_Fn)(HANDLE,LPMODULEENTRY32); |
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4876 typedef BOOL (WINAPI* Module32Next_Fn)(HANDLE,LPMODULEENTRY32); |
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4877 typedef void (WINAPI* GetNativeSystemInfo_Fn)(LPSYSTEM_INFO); |
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4878 |
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4879 SwitchToThread_Fn os::Kernel32Dll::_SwitchToThread = NULL; |
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4880 CreateToolhelp32Snapshot_Fn os::Kernel32Dll::_CreateToolhelp32Snapshot = NULL; |
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4881 Module32First_Fn os::Kernel32Dll::_Module32First = NULL; |
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4882 Module32Next_Fn os::Kernel32Dll::_Module32Next = NULL; |
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4883 GetNativeSystemInfo_Fn os::Kernel32Dll::_GetNativeSystemInfo = NULL; |
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4884 |
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4885 void os::Kernel32Dll::initialize() { |
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4886 if (!initialized) { |
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4887 HMODULE handle = ::GetModuleHandle("Kernel32.dll"); |
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4888 assert(handle != NULL, "Just check"); |
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4889 |
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4890 _SwitchToThread = (SwitchToThread_Fn)::GetProcAddress(handle, "SwitchToThread"); |
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4891 _GetLargePageMinimum = (GetLargePageMinimum_Fn)::GetProcAddress(handle, "GetLargePageMinimum"); |
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4892 _CreateToolhelp32Snapshot = (CreateToolhelp32Snapshot_Fn) |
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4893 ::GetProcAddress(handle, "CreateToolhelp32Snapshot"); |
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4894 _Module32First = (Module32First_Fn)::GetProcAddress(handle, "Module32First"); |
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4895 _Module32Next = (Module32Next_Fn)::GetProcAddress(handle, "Module32Next"); |
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4896 _GetNativeSystemInfo = (GetNativeSystemInfo_Fn)::GetProcAddress(handle, "GetNativeSystemInfo"); |
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4897 |
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4898 initialized = TRUE; |
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|
4899 } |
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|
4900 } |
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|
4901 |
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4902 BOOL os::Kernel32Dll::SwitchToThread() { |
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4903 assert(initialized && _SwitchToThread != NULL, |
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4904 "SwitchToThreadAvailable() not yet called"); |
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4905 return _SwitchToThread(); |
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|
4906 } |
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|
4907 |
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|
4908 |
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4909 BOOL os::Kernel32Dll::SwitchToThreadAvailable() { |
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4910 if (!initialized) { |
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4911 initialize(); |
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|
4912 } |
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4913 return _SwitchToThread != NULL; |
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|
4914 } |
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|
4915 |
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4916 // Help tools |
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4917 BOOL os::Kernel32Dll::HelpToolsAvailable() { |
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4918 if (!initialized) { |
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|
4919 initialize(); |
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|
4920 } |
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4921 return _CreateToolhelp32Snapshot != NULL && |
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4922 _Module32First != NULL && |
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4923 _Module32Next != NULL; |
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|
4924 } |
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|
4925 |
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4926 HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,DWORD th32ProcessId) { |
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4927 assert(initialized && _CreateToolhelp32Snapshot != NULL, |
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4928 "HelpToolsAvailable() not yet called"); |
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|
4929 |
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4930 return _CreateToolhelp32Snapshot(dwFlags, th32ProcessId); |
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|
4931 } |
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|
4932 |
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4933 BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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4934 assert(initialized && _Module32First != NULL, |
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4935 "HelpToolsAvailable() not yet called"); |
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|
4936 |
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4937 return _Module32First(hSnapshot, lpme); |
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|
4938 } |
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|
4939 |
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4940 inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,LPMODULEENTRY32 lpme) { |
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4941 assert(initialized && _Module32Next != NULL, |
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|
4942 "HelpToolsAvailable() not yet called"); |
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|
4943 |
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4944 return _Module32Next(hSnapshot, lpme); |
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|
4945 } |
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|
4946 |
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|
4947 |
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4948 BOOL os::Kernel32Dll::GetNativeSystemInfoAvailable() { |
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4949 if (!initialized) { |
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|
4950 initialize(); |
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|
4951 } |
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4952 return _GetNativeSystemInfo != NULL; |
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|
4953 } |
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|
4954 |
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|
4955 void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) { |
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4956 assert(initialized && _GetNativeSystemInfo != NULL, |
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|
4957 "GetNativeSystemInfoAvailable() not yet called"); |
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|
4958 |
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|
4959 _GetNativeSystemInfo(lpSystemInfo); |
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|
4960 } |
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|
4961 |
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|
4962 // PSAPI API |
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|
4963 |
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|
4964 |
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|
4965 typedef BOOL (WINAPI *EnumProcessModules_Fn)(HANDLE, HMODULE *, DWORD, LPDWORD); |
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4966 typedef BOOL (WINAPI *GetModuleFileNameEx_Fn)(HANDLE, HMODULE, LPTSTR, DWORD);; |
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4967 typedef BOOL (WINAPI *GetModuleInformation_Fn)(HANDLE, HMODULE, LPMODULEINFO, DWORD); |
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|
4968 |
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4969 EnumProcessModules_Fn os::PSApiDll::_EnumProcessModules = NULL; |
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4970 GetModuleFileNameEx_Fn os::PSApiDll::_GetModuleFileNameEx = NULL; |
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|
4971 GetModuleInformation_Fn os::PSApiDll::_GetModuleInformation = NULL; |
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4972 BOOL os::PSApiDll::initialized = FALSE; |
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|
4973 |
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|
4974 void os::PSApiDll::initialize() { |
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4975 if (!initialized) { |
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|
4976 HMODULE handle = os::win32::load_Windows_dll("PSAPI.DLL", NULL, 0); |
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|
4977 if (handle != NULL) { |
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|
4978 _EnumProcessModules = (EnumProcessModules_Fn)::GetProcAddress(handle, |
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|
4979 "EnumProcessModules"); |
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|
4980 _GetModuleFileNameEx = (GetModuleFileNameEx_Fn)::GetProcAddress(handle, |
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|
4981 "GetModuleFileNameExA"); |
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|
4982 _GetModuleInformation = (GetModuleInformation_Fn)::GetProcAddress(handle, |
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|
4983 "GetModuleInformation"); |
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|
4984 } |
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|
4985 initialized = TRUE; |
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|
4986 } |
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|
4987 } |
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|
4988 |
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|
4989 |
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|
4990 |
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|
4991 BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule, DWORD cb, LPDWORD lpcbNeeded) { |
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4992 assert(initialized && _EnumProcessModules != NULL, |
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4993 "PSApiAvailable() not yet called"); |
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4994 return _EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded); |
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|
4995 } |
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|
4996 |
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4997 DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize) { |
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4998 assert(initialized && _GetModuleFileNameEx != NULL, |
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4999 "PSApiAvailable() not yet called"); |
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5000 return _GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize); |
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|
5001 } |
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|
5002 |
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5003 BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule, LPMODULEINFO lpmodinfo, DWORD cb) { |
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5004 assert(initialized && _GetModuleInformation != NULL, |
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5005 "PSApiAvailable() not yet called"); |
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5006 return _GetModuleInformation(hProcess, hModule, lpmodinfo, cb); |
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5007 } |
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5008 |
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5009 BOOL os::PSApiDll::PSApiAvailable() { |
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5010 if (!initialized) { |
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|
5011 initialize(); |
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|
5012 } |
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5013 return _EnumProcessModules != NULL && |
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5014 _GetModuleFileNameEx != NULL && |
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5015 _GetModuleInformation != NULL; |
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5016 } |
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5017 |
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5018 |
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5019 // WinSock2 API |
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5020 typedef int (PASCAL FAR* WSAStartup_Fn)(WORD, LPWSADATA); |
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5021 typedef struct hostent *(PASCAL FAR *gethostbyname_Fn)(...); |
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5022 |
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5023 WSAStartup_Fn os::WinSock2Dll::_WSAStartup = NULL; |
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5024 gethostbyname_Fn os::WinSock2Dll::_gethostbyname = NULL; |
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5025 BOOL os::WinSock2Dll::initialized = FALSE; |
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5026 |
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5027 void os::WinSock2Dll::initialize() { |
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5028 if (!initialized) { |
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5029 HMODULE handle = os::win32::load_Windows_dll("ws2_32.dll", NULL, 0); |
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5030 if (handle != NULL) { |
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5031 _WSAStartup = (WSAStartup_Fn)::GetProcAddress(handle, "WSAStartup"); |
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5032 _gethostbyname = (gethostbyname_Fn)::GetProcAddress(handle, "gethostbyname"); |
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5033 } |
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5034 initialized = TRUE; |
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5035 } |
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5036 } |
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5037 |
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5038 |
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5039 BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) { |
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5040 assert(initialized && _WSAStartup != NULL, |
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5041 "WinSock2Available() not yet called"); |
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5042 return _WSAStartup(wVersionRequested, lpWSAData); |
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5043 } |
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5044 |
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5045 struct hostent* os::WinSock2Dll::gethostbyname(const char *name) { |
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5046 assert(initialized && _gethostbyname != NULL, |
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5047 "WinSock2Available() not yet called"); |
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5048 return _gethostbyname(name); |
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5049 } |
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5050 |
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5051 BOOL os::WinSock2Dll::WinSock2Available() { |
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5052 if (!initialized) { |
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|
5053 initialize(); |
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5054 } |
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5055 return _WSAStartup != NULL && |
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5056 _gethostbyname != NULL; |
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5057 } |
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5058 |
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5059 typedef BOOL (WINAPI *AdjustTokenPrivileges_Fn)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); |
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5060 typedef BOOL (WINAPI *OpenProcessToken_Fn)(HANDLE, DWORD, PHANDLE); |
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5061 typedef BOOL (WINAPI *LookupPrivilegeValue_Fn)(LPCTSTR, LPCTSTR, PLUID); |
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5062 |
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5063 AdjustTokenPrivileges_Fn os::Advapi32Dll::_AdjustTokenPrivileges = NULL; |
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5064 OpenProcessToken_Fn os::Advapi32Dll::_OpenProcessToken = NULL; |
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5065 LookupPrivilegeValue_Fn os::Advapi32Dll::_LookupPrivilegeValue = NULL; |
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5066 BOOL os::Advapi32Dll::initialized = FALSE; |
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|
5067 |
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5068 void os::Advapi32Dll::initialize() { |
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5069 if (!initialized) { |
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5070 HMODULE handle = os::win32::load_Windows_dll("advapi32.dll", NULL, 0); |
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5071 if (handle != NULL) { |
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5072 _AdjustTokenPrivileges = (AdjustTokenPrivileges_Fn)::GetProcAddress(handle, |
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5073 "AdjustTokenPrivileges"); |
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5074 _OpenProcessToken = (OpenProcessToken_Fn)::GetProcAddress(handle, |
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5075 "OpenProcessToken"); |
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5076 _LookupPrivilegeValue = (LookupPrivilegeValue_Fn)::GetProcAddress(handle, |
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5077 "LookupPrivilegeValue"); |
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5078 } |
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5079 initialized = TRUE; |
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|
5080 } |
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|
5081 } |
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|
5082 |
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5083 BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle, |
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5084 BOOL DisableAllPrivileges, PTOKEN_PRIVILEGES NewState, DWORD BufferLength, |
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5085 PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength) { |
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5086 assert(initialized && _AdjustTokenPrivileges != NULL, |
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5087 "AdvapiAvailable() not yet called"); |
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5088 return _AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState, |
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5089 BufferLength, PreviousState, ReturnLength); |
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5090 } |
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|
5091 |
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5092 BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle, DWORD DesiredAccess, |
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5093 PHANDLE TokenHandle) { |
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5094 assert(initialized && _OpenProcessToken != NULL, |
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5095 "AdvapiAvailable() not yet called"); |
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5096 return _OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle); |
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5097 } |
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5098 |
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5099 BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid) { |
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5100 assert(initialized && _LookupPrivilegeValue != NULL, |
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5101 "AdvapiAvailable() not yet called"); |
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5102 return _LookupPrivilegeValue(lpSystemName, lpName, lpLuid); |
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5103 } |
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|
5104 |
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5105 BOOL os::Advapi32Dll::AdvapiAvailable() { |
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5106 if (!initialized) { |
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5107 initialize(); |
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5108 } |
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5109 return _AdjustTokenPrivileges != NULL && |
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5110 _OpenProcessToken != NULL && |
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5111 _LookupPrivilegeValue != NULL; |
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5112 } |
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5113 |
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|
5114 #endif |
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5115 |