Mercurial > hg > truffle
annotate src/os/windows/vm/os_windows.cpp @ 1980:828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
Summary: move functions from hpi library to hotspot, communicate with licensees and open source community, check jdk for dependency, file CCC request
Reviewed-by: coleenp, acorn, dsamersoff
author | ikrylov |
---|---|
date | Wed, 01 Dec 2010 18:26:32 -0500 |
parents | f95d63e2154a |
children | cb2d0a362639 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, 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 | |
25 #ifdef _WIN64 | |
26 // Must be at least Windows 2000 or XP to use VectoredExceptions | |
27 #define _WIN32_WINNT 0x500 | |
28 #endif | |
29 | |
1972 | 30 // no precompiled headers |
31 #include "classfile/classLoader.hpp" | |
32 #include "classfile/systemDictionary.hpp" | |
33 #include "classfile/vmSymbols.hpp" | |
34 #include "code/icBuffer.hpp" | |
35 #include "code/vtableStubs.hpp" | |
36 #include "compiler/compileBroker.hpp" | |
37 #include "interpreter/interpreter.hpp" | |
38 #include "jvm_windows.h" | |
39 #include "memory/allocation.inline.hpp" | |
40 #include "memory/filemap.hpp" | |
41 #include "mutex_windows.inline.hpp" | |
42 #include "oops/oop.inline.hpp" | |
43 #include "os_share_windows.hpp" | |
44 #include "prims/jniFastGetField.hpp" | |
45 #include "prims/jvm.h" | |
46 #include "prims/jvm_misc.hpp" | |
47 #include "runtime/arguments.hpp" | |
48 #include "runtime/extendedPC.hpp" | |
49 #include "runtime/globals.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/mutexLocker.hpp" | |
54 #include "runtime/objectMonitor.hpp" | |
55 #include "runtime/osThread.hpp" | |
56 #include "runtime/perfMemory.hpp" | |
57 #include "runtime/sharedRuntime.hpp" | |
58 #include "runtime/statSampler.hpp" | |
59 #include "runtime/stubRoutines.hpp" | |
60 #include "runtime/threadCritical.hpp" | |
61 #include "runtime/timer.hpp" | |
62 #include "services/attachListener.hpp" | |
63 #include "services/runtimeService.hpp" | |
64 #include "thread_windows.inline.hpp" | |
65 #include "utilities/defaultStream.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/growableArray.hpp" | |
68 #include "utilities/vmError.hpp" | |
69 #ifdef TARGET_ARCH_x86 | |
70 # include "assembler_x86.inline.hpp" | |
71 # include "nativeInst_x86.hpp" | |
72 #endif | |
73 #ifdef COMPILER1 | |
74 #include "c1/c1_Runtime1.hpp" | |
75 #endif | |
76 #ifdef COMPILER2 | |
77 #include "opto/runtime.hpp" | |
78 #endif | |
0 | 79 |
80 #ifdef _DEBUG | |
81 #include <crtdbg.h> | |
82 #endif | |
83 | |
84 | |
85 #include <windows.h> | |
86 #include <sys/types.h> | |
87 #include <sys/stat.h> | |
88 #include <sys/timeb.h> | |
89 #include <objidl.h> | |
90 #include <shlobj.h> | |
91 | |
92 #include <malloc.h> | |
93 #include <signal.h> | |
94 #include <direct.h> | |
95 #include <errno.h> | |
96 #include <fcntl.h> | |
97 #include <io.h> | |
98 #include <process.h> // For _beginthreadex(), _endthreadex() | |
99 #include <imagehlp.h> // For os::dll_address_to_function_name | |
100 | |
101 /* for enumerating dll libraries */ | |
102 #include <tlhelp32.h> | |
103 #include <vdmdbg.h> | |
104 | |
105 // for timer info max values which include all bits | |
106 #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) | |
107 | |
108 // For DLL loading/load error detection | |
109 // Values of PE COFF | |
110 #define IMAGE_FILE_PTR_TO_SIGNATURE 0x3c | |
111 #define IMAGE_FILE_SIGNATURE_LENGTH 4 | |
112 | |
113 static HANDLE main_process; | |
114 static HANDLE main_thread; | |
115 static int main_thread_id; | |
116 | |
117 static FILETIME process_creation_time; | |
118 static FILETIME process_exit_time; | |
119 static FILETIME process_user_time; | |
120 static FILETIME process_kernel_time; | |
121 | |
122 #ifdef _WIN64 | |
123 PVOID topLevelVectoredExceptionHandler = NULL; | |
124 #endif | |
125 | |
126 #ifdef _M_IA64 | |
127 #define __CPU__ ia64 | |
128 #elif _M_AMD64 | |
129 #define __CPU__ amd64 | |
130 #else | |
131 #define __CPU__ i486 | |
132 #endif | |
133 | |
134 // save DLL module handle, used by GetModuleFileName | |
135 | |
136 HINSTANCE vm_lib_handle; | |
137 static int getLastErrorString(char *buf, size_t len); | |
138 | |
139 BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) { | |
140 switch (reason) { | |
141 case DLL_PROCESS_ATTACH: | |
142 vm_lib_handle = hinst; | |
143 if(ForceTimeHighResolution) | |
144 timeBeginPeriod(1L); | |
145 break; | |
146 case DLL_PROCESS_DETACH: | |
147 if(ForceTimeHighResolution) | |
148 timeEndPeriod(1L); | |
149 #ifdef _WIN64 | |
150 if (topLevelVectoredExceptionHandler != NULL) { | |
151 RemoveVectoredExceptionHandler(topLevelVectoredExceptionHandler); | |
152 topLevelVectoredExceptionHandler = NULL; | |
153 } | |
154 #endif | |
155 break; | |
156 default: | |
157 break; | |
158 } | |
159 return true; | |
160 } | |
161 | |
162 static inline double fileTimeAsDouble(FILETIME* time) { | |
163 const double high = (double) ((unsigned int) ~0); | |
164 const double split = 10000000.0; | |
165 double result = (time->dwLowDateTime / split) + | |
166 time->dwHighDateTime * (high/split); | |
167 return result; | |
168 } | |
169 | |
170 // Implementation of os | |
171 | |
172 bool os::getenv(const char* name, char* buffer, int len) { | |
173 int result = GetEnvironmentVariable(name, buffer, len); | |
174 return result > 0 && result < len; | |
175 } | |
176 | |
177 | |
178 // No setuid programs under Windows. | |
179 bool os::have_special_privileges() { | |
180 return false; | |
181 } | |
182 | |
183 | |
184 // This method is a periodic task to check for misbehaving JNI applications | |
185 // under CheckJNI, we can add any periodic checks here. | |
186 // For Windows at the moment does nothing | |
187 void os::run_periodic_checks() { | |
188 return; | |
189 } | |
190 | |
191 #ifndef _WIN64 | |
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192 // previous UnhandledExceptionFilter, if there is one |
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193 static LPTOP_LEVEL_EXCEPTION_FILTER prev_uef_handler = NULL; |
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194 |
0 | 195 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo); |
196 #endif | |
197 void os::init_system_properties_values() { | |
198 /* sysclasspath, java_home, dll_dir */ | |
199 { | |
200 char *home_path; | |
201 char *dll_path; | |
202 char *pslash; | |
203 char *bin = "\\bin"; | |
204 char home_dir[MAX_PATH]; | |
205 | |
206 if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) { | |
207 os::jvm_path(home_dir, sizeof(home_dir)); | |
208 // Found the full path to jvm[_g].dll. | |
209 // Now cut the path to <java_home>/jre if we can. | |
210 *(strrchr(home_dir, '\\')) = '\0'; /* get rid of \jvm.dll */ | |
211 pslash = strrchr(home_dir, '\\'); | |
212 if (pslash != NULL) { | |
213 *pslash = '\0'; /* get rid of \{client|server} */ | |
214 pslash = strrchr(home_dir, '\\'); | |
215 if (pslash != NULL) | |
216 *pslash = '\0'; /* get rid of \bin */ | |
217 } | |
218 } | |
219 | |
220 home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1); | |
221 if (home_path == NULL) | |
222 return; | |
223 strcpy(home_path, home_dir); | |
224 Arguments::set_java_home(home_path); | |
225 | |
226 dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1); | |
227 if (dll_path == NULL) | |
228 return; | |
229 strcpy(dll_path, home_dir); | |
230 strcat(dll_path, bin); | |
231 Arguments::set_dll_dir(dll_path); | |
232 | |
233 if (!set_boot_path('\\', ';')) | |
234 return; | |
235 } | |
236 | |
237 /* library_path */ | |
238 #define EXT_DIR "\\lib\\ext" | |
239 #define BIN_DIR "\\bin" | |
240 #define PACKAGE_DIR "\\Sun\\Java" | |
241 { | |
242 /* Win32 library search order (See the documentation for LoadLibrary): | |
243 * | |
244 * 1. The directory from which application is loaded. | |
245 * 2. The current directory | |
246 * 3. The system wide Java Extensions directory (Java only) | |
247 * 4. System directory (GetSystemDirectory) | |
248 * 5. Windows directory (GetWindowsDirectory) | |
249 * 6. The PATH environment variable | |
250 */ | |
251 | |
252 char *library_path; | |
253 char tmp[MAX_PATH]; | |
254 char *path_str = ::getenv("PATH"); | |
255 | |
256 library_path = NEW_C_HEAP_ARRAY(char, MAX_PATH * 5 + sizeof(PACKAGE_DIR) + | |
257 sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10); | |
258 | |
259 library_path[0] = '\0'; | |
260 | |
261 GetModuleFileName(NULL, tmp, sizeof(tmp)); | |
262 *(strrchr(tmp, '\\')) = '\0'; | |
263 strcat(library_path, tmp); | |
264 | |
265 strcat(library_path, ";."); | |
266 | |
267 GetWindowsDirectory(tmp, sizeof(tmp)); | |
268 strcat(library_path, ";"); | |
269 strcat(library_path, tmp); | |
270 strcat(library_path, PACKAGE_DIR BIN_DIR); | |
271 | |
272 GetSystemDirectory(tmp, sizeof(tmp)); | |
273 strcat(library_path, ";"); | |
274 strcat(library_path, tmp); | |
275 | |
276 GetWindowsDirectory(tmp, sizeof(tmp)); | |
277 strcat(library_path, ";"); | |
278 strcat(library_path, tmp); | |
279 | |
280 if (path_str) { | |
281 strcat(library_path, ";"); | |
282 strcat(library_path, path_str); | |
283 } | |
284 | |
285 Arguments::set_library_path(library_path); | |
286 FREE_C_HEAP_ARRAY(char, library_path); | |
287 } | |
288 | |
289 /* Default extensions directory */ | |
290 { | |
291 char path[MAX_PATH]; | |
292 char buf[2 * MAX_PATH + 2 * sizeof(EXT_DIR) + sizeof(PACKAGE_DIR) + 1]; | |
293 GetWindowsDirectory(path, MAX_PATH); | |
294 sprintf(buf, "%s%s;%s%s%s", Arguments::get_java_home(), EXT_DIR, | |
295 path, PACKAGE_DIR, EXT_DIR); | |
296 Arguments::set_ext_dirs(buf); | |
297 } | |
298 #undef EXT_DIR | |
299 #undef BIN_DIR | |
300 #undef PACKAGE_DIR | |
301 | |
302 /* Default endorsed standards directory. */ | |
303 { | |
304 #define ENDORSED_DIR "\\lib\\endorsed" | |
305 size_t len = strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR); | |
306 char * buf = NEW_C_HEAP_ARRAY(char, len); | |
307 sprintf(buf, "%s%s", Arguments::get_java_home(), ENDORSED_DIR); | |
308 Arguments::set_endorsed_dirs(buf); | |
309 #undef ENDORSED_DIR | |
310 } | |
311 | |
312 #ifndef _WIN64 | |
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313 // set our UnhandledExceptionFilter and save any previous one |
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314 prev_uef_handler = SetUnhandledExceptionFilter(Handle_FLT_Exception); |
0 | 315 #endif |
316 | |
317 // Done | |
318 return; | |
319 } | |
320 | |
321 void os::breakpoint() { | |
322 DebugBreak(); | |
323 } | |
324 | |
325 // Invoked from the BREAKPOINT Macro | |
326 extern "C" void breakpoint() { | |
327 os::breakpoint(); | |
328 } | |
329 | |
330 // Returns an estimate of the current stack pointer. Result must be guaranteed | |
331 // to point into the calling threads stack, and be no lower than the current | |
332 // stack pointer. | |
333 | |
334 address os::current_stack_pointer() { | |
335 int dummy; | |
336 address sp = (address)&dummy; | |
337 return sp; | |
338 } | |
339 | |
340 // os::current_stack_base() | |
341 // | |
342 // Returns the base of the stack, which is the stack's | |
343 // starting address. This function must be called | |
344 // while running on the stack of the thread being queried. | |
345 | |
346 address os::current_stack_base() { | |
347 MEMORY_BASIC_INFORMATION minfo; | |
348 address stack_bottom; | |
349 size_t stack_size; | |
350 | |
351 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
352 stack_bottom = (address)minfo.AllocationBase; | |
353 stack_size = minfo.RegionSize; | |
354 | |
355 // Add up the sizes of all the regions with the same | |
356 // AllocationBase. | |
357 while( 1 ) | |
358 { | |
359 VirtualQuery(stack_bottom+stack_size, &minfo, sizeof(minfo)); | |
360 if ( stack_bottom == (address)minfo.AllocationBase ) | |
361 stack_size += minfo.RegionSize; | |
362 else | |
363 break; | |
364 } | |
365 | |
366 #ifdef _M_IA64 | |
367 // IA64 has memory and register stacks | |
368 stack_size = stack_size / 2; | |
369 #endif | |
370 return stack_bottom + stack_size; | |
371 } | |
372 | |
373 size_t os::current_stack_size() { | |
374 size_t sz; | |
375 MEMORY_BASIC_INFORMATION minfo; | |
376 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
377 sz = (size_t)os::current_stack_base() - (size_t)minfo.AllocationBase; | |
378 return sz; | |
379 } | |
380 | |
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381 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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382 const struct tm* time_struct_ptr = localtime(clock); |
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383 if (time_struct_ptr != NULL) { |
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384 *res = *time_struct_ptr; |
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385 return res; |
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386 } |
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387 return NULL; |
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388 } |
0 | 389 |
390 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo); | |
391 | |
392 // Thread start routine for all new Java threads | |
393 static unsigned __stdcall java_start(Thread* thread) { | |
394 // Try to randomize the cache line index of hot stack frames. | |
395 // This helps when threads of the same stack traces evict each other's | |
396 // cache lines. The threads can be either from the same JVM instance, or | |
397 // from different JVM instances. The benefit is especially true for | |
398 // processors with hyperthreading technology. | |
399 static int counter = 0; | |
400 int pid = os::current_process_id(); | |
401 _alloca(((pid ^ counter++) & 7) * 128); | |
402 | |
403 OSThread* osthr = thread->osthread(); | |
404 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
405 | |
406 if (UseNUMA) { | |
407 int lgrp_id = os::numa_get_group_id(); | |
408 if (lgrp_id != -1) { | |
409 thread->set_lgrp_id(lgrp_id); | |
410 } | |
411 } | |
412 | |
413 | |
414 if (UseVectoredExceptions) { | |
415 // If we are using vectored exception we don't need to set a SEH | |
416 thread->run(); | |
417 } | |
418 else { | |
419 // Install a win32 structured exception handler around every thread created | |
420 // by VM, so VM can genrate error dump when an exception occurred in non- | |
421 // Java thread (e.g. VM thread). | |
422 __try { | |
423 thread->run(); | |
424 } __except(topLevelExceptionFilter( | |
425 (_EXCEPTION_POINTERS*)_exception_info())) { | |
426 // Nothing to do. | |
427 } | |
428 } | |
429 | |
430 // One less thread is executing | |
431 // When the VMThread gets here, the main thread may have already exited | |
432 // which frees the CodeHeap containing the Atomic::add code | |
433 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
434 Atomic::dec_ptr((intptr_t*)&os::win32::_os_thread_count); | |
435 } | |
436 | |
437 return 0; | |
438 } | |
439 | |
440 static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle, int thread_id) { | |
441 // Allocate the OSThread object | |
442 OSThread* osthread = new OSThread(NULL, NULL); | |
443 if (osthread == NULL) return NULL; | |
444 | |
445 // Initialize support for Java interrupts | |
446 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
447 if (interrupt_event == NULL) { | |
448 delete osthread; | |
449 return NULL; | |
450 } | |
451 osthread->set_interrupt_event(interrupt_event); | |
452 | |
453 // Store info on the Win32 thread into the OSThread | |
454 osthread->set_thread_handle(thread_handle); | |
455 osthread->set_thread_id(thread_id); | |
456 | |
457 if (UseNUMA) { | |
458 int lgrp_id = os::numa_get_group_id(); | |
459 if (lgrp_id != -1) { | |
460 thread->set_lgrp_id(lgrp_id); | |
461 } | |
462 } | |
463 | |
464 // Initial thread state is INITIALIZED, not SUSPENDED | |
465 osthread->set_state(INITIALIZED); | |
466 | |
467 return osthread; | |
468 } | |
469 | |
470 | |
471 bool os::create_attached_thread(JavaThread* thread) { | |
472 #ifdef ASSERT | |
473 thread->verify_not_published(); | |
474 #endif | |
475 HANDLE thread_h; | |
476 if (!DuplicateHandle(main_process, GetCurrentThread(), GetCurrentProcess(), | |
477 &thread_h, THREAD_ALL_ACCESS, false, 0)) { | |
478 fatal("DuplicateHandle failed\n"); | |
479 } | |
480 OSThread* osthread = create_os_thread(thread, thread_h, | |
481 (int)current_thread_id()); | |
482 if (osthread == NULL) { | |
483 return false; | |
484 } | |
485 | |
486 // Initial thread state is RUNNABLE | |
487 osthread->set_state(RUNNABLE); | |
488 | |
489 thread->set_osthread(osthread); | |
490 return true; | |
491 } | |
492 | |
493 bool os::create_main_thread(JavaThread* thread) { | |
494 #ifdef ASSERT | |
495 thread->verify_not_published(); | |
496 #endif | |
497 if (_starting_thread == NULL) { | |
498 _starting_thread = create_os_thread(thread, main_thread, main_thread_id); | |
499 if (_starting_thread == NULL) { | |
500 return false; | |
501 } | |
502 } | |
503 | |
504 // The primordial thread is runnable from the start) | |
505 _starting_thread->set_state(RUNNABLE); | |
506 | |
507 thread->set_osthread(_starting_thread); | |
508 return true; | |
509 } | |
510 | |
511 // Allocate and initialize a new OSThread | |
512 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
513 unsigned thread_id; | |
514 | |
515 // Allocate the OSThread object | |
516 OSThread* osthread = new OSThread(NULL, NULL); | |
517 if (osthread == NULL) { | |
518 return false; | |
519 } | |
520 | |
521 // Initialize support for Java interrupts | |
522 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
523 if (interrupt_event == NULL) { | |
524 delete osthread; | |
525 return NULL; | |
526 } | |
527 osthread->set_interrupt_event(interrupt_event); | |
528 osthread->set_interrupted(false); | |
529 | |
530 thread->set_osthread(osthread); | |
531 | |
532 if (stack_size == 0) { | |
533 switch (thr_type) { | |
534 case os::java_thread: | |
535 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
536 if (JavaThread::stack_size_at_create() > 0) | |
537 stack_size = JavaThread::stack_size_at_create(); | |
538 break; | |
539 case os::compiler_thread: | |
540 if (CompilerThreadStackSize > 0) { | |
541 stack_size = (size_t)(CompilerThreadStackSize * K); | |
542 break; | |
543 } // else fall through: | |
544 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
545 case os::vm_thread: | |
546 case os::pgc_thread: | |
547 case os::cgc_thread: | |
548 case os::watcher_thread: | |
549 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
550 break; | |
551 } | |
552 } | |
553 | |
554 // Create the Win32 thread | |
555 // | |
556 // Contrary to what MSDN document says, "stack_size" in _beginthreadex() | |
557 // does not specify stack size. Instead, it specifies the size of | |
558 // initially committed space. The stack size is determined by | |
559 // PE header in the executable. If the committed "stack_size" is larger | |
560 // than default value in the PE header, the stack is rounded up to the | |
561 // nearest multiple of 1MB. For example if the launcher has default | |
562 // stack size of 320k, specifying any size less than 320k does not | |
563 // affect the actual stack size at all, it only affects the initial | |
564 // commitment. On the other hand, specifying 'stack_size' larger than | |
565 // default value may cause significant increase in memory usage, because | |
566 // not only the stack space will be rounded up to MB, but also the | |
567 // entire space is committed upfront. | |
568 // | |
569 // Finally Windows XP added a new flag 'STACK_SIZE_PARAM_IS_A_RESERVATION' | |
570 // for CreateThread() that can treat 'stack_size' as stack size. However we | |
571 // are not supposed to call CreateThread() directly according to MSDN | |
572 // document because JVM uses C runtime library. The good news is that the | |
573 // flag appears to work with _beginthredex() as well. | |
574 | |
575 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION | |
576 #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000) | |
577 #endif | |
578 | |
579 HANDLE thread_handle = | |
580 (HANDLE)_beginthreadex(NULL, | |
581 (unsigned)stack_size, | |
582 (unsigned (__stdcall *)(void*)) java_start, | |
583 thread, | |
584 CREATE_SUSPENDED | STACK_SIZE_PARAM_IS_A_RESERVATION, | |
585 &thread_id); | |
586 if (thread_handle == NULL) { | |
587 // perhaps STACK_SIZE_PARAM_IS_A_RESERVATION is not supported, try again | |
588 // without the flag. | |
589 thread_handle = | |
590 (HANDLE)_beginthreadex(NULL, | |
591 (unsigned)stack_size, | |
592 (unsigned (__stdcall *)(void*)) java_start, | |
593 thread, | |
594 CREATE_SUSPENDED, | |
595 &thread_id); | |
596 } | |
597 if (thread_handle == NULL) { | |
598 // Need to clean up stuff we've allocated so far | |
599 CloseHandle(osthread->interrupt_event()); | |
600 thread->set_osthread(NULL); | |
601 delete osthread; | |
602 return NULL; | |
603 } | |
604 | |
605 Atomic::inc_ptr((intptr_t*)&os::win32::_os_thread_count); | |
606 | |
607 // Store info on the Win32 thread into the OSThread | |
608 osthread->set_thread_handle(thread_handle); | |
609 osthread->set_thread_id(thread_id); | |
610 | |
611 // Initial thread state is INITIALIZED, not SUSPENDED | |
612 osthread->set_state(INITIALIZED); | |
613 | |
614 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
615 return true; | |
616 } | |
617 | |
618 | |
619 // Free Win32 resources related to the OSThread | |
620 void os::free_thread(OSThread* osthread) { | |
621 assert(osthread != NULL, "osthread not set"); | |
622 CloseHandle(osthread->thread_handle()); | |
623 CloseHandle(osthread->interrupt_event()); | |
624 delete osthread; | |
625 } | |
626 | |
627 | |
628 static int has_performance_count = 0; | |
629 static jlong first_filetime; | |
630 static jlong initial_performance_count; | |
631 static jlong performance_frequency; | |
632 | |
633 | |
634 jlong as_long(LARGE_INTEGER x) { | |
635 jlong result = 0; // initialization to avoid warning | |
636 set_high(&result, x.HighPart); | |
637 set_low(&result, x.LowPart); | |
638 return result; | |
639 } | |
640 | |
641 | |
642 jlong os::elapsed_counter() { | |
643 LARGE_INTEGER count; | |
644 if (has_performance_count) { | |
645 QueryPerformanceCounter(&count); | |
646 return as_long(count) - initial_performance_count; | |
647 } else { | |
648 FILETIME wt; | |
649 GetSystemTimeAsFileTime(&wt); | |
650 return (jlong_from(wt.dwHighDateTime, wt.dwLowDateTime) - first_filetime); | |
651 } | |
652 } | |
653 | |
654 | |
655 jlong os::elapsed_frequency() { | |
656 if (has_performance_count) { | |
657 return performance_frequency; | |
658 } else { | |
659 // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601. | |
660 return 10000000; | |
661 } | |
662 } | |
663 | |
664 | |
665 julong os::available_memory() { | |
666 return win32::available_memory(); | |
667 } | |
668 | |
669 julong os::win32::available_memory() { | |
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670 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
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671 // value if total memory is larger than 4GB |
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672 MEMORYSTATUSEX ms; |
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673 ms.dwLength = sizeof(ms); |
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674 GlobalMemoryStatusEx(&ms); |
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675 |
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676 return (julong)ms.ullAvailPhys; |
0 | 677 } |
678 | |
679 julong os::physical_memory() { | |
680 return win32::physical_memory(); | |
681 } | |
682 | |
683 julong os::allocatable_physical_memory(julong size) { | |
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684 #ifdef _LP64 |
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685 return size; |
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686 #else |
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687 // Limit to 1400m because of the 2gb address space wall |
0 | 688 return MIN2(size, (julong)1400*M); |
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689 #endif |
0 | 690 } |
691 | |
692 // VC6 lacks DWORD_PTR | |
693 #if _MSC_VER < 1300 | |
694 typedef UINT_PTR DWORD_PTR; | |
695 #endif | |
696 | |
697 int os::active_processor_count() { | |
698 DWORD_PTR lpProcessAffinityMask = 0; | |
699 DWORD_PTR lpSystemAffinityMask = 0; | |
700 int proc_count = processor_count(); | |
701 if (proc_count <= sizeof(UINT_PTR) * BitsPerByte && | |
702 GetProcessAffinityMask(GetCurrentProcess(), &lpProcessAffinityMask, &lpSystemAffinityMask)) { | |
703 // Nof active processors is number of bits in process affinity mask | |
704 int bitcount = 0; | |
705 while (lpProcessAffinityMask != 0) { | |
706 lpProcessAffinityMask = lpProcessAffinityMask & (lpProcessAffinityMask-1); | |
707 bitcount++; | |
708 } | |
709 return bitcount; | |
710 } else { | |
711 return proc_count; | |
712 } | |
713 } | |
714 | |
715 bool os::distribute_processes(uint length, uint* distribution) { | |
716 // Not yet implemented. | |
717 return false; | |
718 } | |
719 | |
720 bool os::bind_to_processor(uint processor_id) { | |
721 // Not yet implemented. | |
722 return false; | |
723 } | |
724 | |
725 static void initialize_performance_counter() { | |
726 LARGE_INTEGER count; | |
727 if (QueryPerformanceFrequency(&count)) { | |
728 has_performance_count = 1; | |
729 performance_frequency = as_long(count); | |
730 QueryPerformanceCounter(&count); | |
731 initial_performance_count = as_long(count); | |
732 } else { | |
733 has_performance_count = 0; | |
734 FILETIME wt; | |
735 GetSystemTimeAsFileTime(&wt); | |
736 first_filetime = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
737 } | |
738 } | |
739 | |
740 | |
741 double os::elapsedTime() { | |
742 return (double) elapsed_counter() / (double) elapsed_frequency(); | |
743 } | |
744 | |
745 | |
746 // Windows format: | |
747 // The FILETIME structure is a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601. | |
748 // Java format: | |
749 // Java standards require the number of milliseconds since 1/1/1970 | |
750 | |
751 // Constant offset - calculated using offset() | |
752 static jlong _offset = 116444736000000000; | |
753 // Fake time counter for reproducible results when debugging | |
754 static jlong fake_time = 0; | |
755 | |
756 #ifdef ASSERT | |
757 // Just to be safe, recalculate the offset in debug mode | |
758 static jlong _calculated_offset = 0; | |
759 static int _has_calculated_offset = 0; | |
760 | |
761 jlong offset() { | |
762 if (_has_calculated_offset) return _calculated_offset; | |
763 SYSTEMTIME java_origin; | |
764 java_origin.wYear = 1970; | |
765 java_origin.wMonth = 1; | |
766 java_origin.wDayOfWeek = 0; // ignored | |
767 java_origin.wDay = 1; | |
768 java_origin.wHour = 0; | |
769 java_origin.wMinute = 0; | |
770 java_origin.wSecond = 0; | |
771 java_origin.wMilliseconds = 0; | |
772 FILETIME jot; | |
773 if (!SystemTimeToFileTime(&java_origin, &jot)) { | |
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774 fatal(err_msg("Error = %d\nWindows error", GetLastError())); |
0 | 775 } |
776 _calculated_offset = jlong_from(jot.dwHighDateTime, jot.dwLowDateTime); | |
777 _has_calculated_offset = 1; | |
778 assert(_calculated_offset == _offset, "Calculated and constant time offsets must be equal"); | |
779 return _calculated_offset; | |
780 } | |
781 #else | |
782 jlong offset() { | |
783 return _offset; | |
784 } | |
785 #endif | |
786 | |
787 jlong windows_to_java_time(FILETIME wt) { | |
788 jlong a = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
789 return (a - offset()) / 10000; | |
790 } | |
791 | |
792 FILETIME java_to_windows_time(jlong l) { | |
793 jlong a = (l * 10000) + offset(); | |
794 FILETIME result; | |
795 result.dwHighDateTime = high(a); | |
796 result.dwLowDateTime = low(a); | |
797 return result; | |
798 } | |
799 | |
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800 // For now, we say that Windows does not support vtime. I have no idea |
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801 // whether it can actually be made to (DLD, 9/13/05). |
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802 |
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803 bool os::supports_vtime() { return false; } |
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804 bool os::enable_vtime() { return false; } |
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805 bool os::vtime_enabled() { return false; } |
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806 double os::elapsedVTime() { |
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807 // better than nothing, but not much |
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808 return elapsedTime(); |
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809 } |
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810 |
0 | 811 jlong os::javaTimeMillis() { |
812 if (UseFakeTimers) { | |
813 return fake_time++; | |
814 } else { | |
61 | 815 FILETIME wt; |
816 GetSystemTimeAsFileTime(&wt); | |
817 return windows_to_java_time(wt); | |
0 | 818 } |
819 } | |
820 | |
821 #define NANOS_PER_SEC CONST64(1000000000) | |
822 #define NANOS_PER_MILLISEC 1000000 | |
823 jlong os::javaTimeNanos() { | |
824 if (!has_performance_count) { | |
825 return javaTimeMillis() * NANOS_PER_MILLISEC; // the best we can do. | |
826 } else { | |
827 LARGE_INTEGER current_count; | |
828 QueryPerformanceCounter(¤t_count); | |
829 double current = as_long(current_count); | |
830 double freq = performance_frequency; | |
831 jlong time = (jlong)((current/freq) * NANOS_PER_SEC); | |
832 return time; | |
833 } | |
834 } | |
835 | |
836 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
837 if (!has_performance_count) { | |
838 // javaTimeMillis() doesn't have much percision, | |
839 // but it is not going to wrap -- so all 64 bits | |
840 info_ptr->max_value = ALL_64_BITS; | |
841 | |
842 // this is a wall clock timer, so may skip | |
843 info_ptr->may_skip_backward = true; | |
844 info_ptr->may_skip_forward = true; | |
845 } else { | |
846 jlong freq = performance_frequency; | |
847 if (freq < NANOS_PER_SEC) { | |
848 // the performance counter is 64 bits and we will | |
849 // be multiplying it -- so no wrap in 64 bits | |
850 info_ptr->max_value = ALL_64_BITS; | |
851 } else if (freq > NANOS_PER_SEC) { | |
852 // use the max value the counter can reach to | |
853 // determine the max value which could be returned | |
854 julong max_counter = (julong)ALL_64_BITS; | |
855 info_ptr->max_value = (jlong)(max_counter / (freq / NANOS_PER_SEC)); | |
856 } else { | |
857 // the performance counter is 64 bits and we will | |
858 // be using it directly -- so no wrap in 64 bits | |
859 info_ptr->max_value = ALL_64_BITS; | |
860 } | |
861 | |
862 // using a counter, so no skipping | |
863 info_ptr->may_skip_backward = false; | |
864 info_ptr->may_skip_forward = false; | |
865 } | |
866 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
867 } | |
868 | |
869 char* os::local_time_string(char *buf, size_t buflen) { | |
870 SYSTEMTIME st; | |
871 GetLocalTime(&st); | |
872 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
873 st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond); | |
874 return buf; | |
875 } | |
876 | |
877 bool os::getTimesSecs(double* process_real_time, | |
878 double* process_user_time, | |
879 double* process_system_time) { | |
880 HANDLE h_process = GetCurrentProcess(); | |
881 FILETIME create_time, exit_time, kernel_time, user_time; | |
882 BOOL result = GetProcessTimes(h_process, | |
883 &create_time, | |
884 &exit_time, | |
885 &kernel_time, | |
886 &user_time); | |
887 if (result != 0) { | |
888 FILETIME wt; | |
889 GetSystemTimeAsFileTime(&wt); | |
890 jlong rtc_millis = windows_to_java_time(wt); | |
891 jlong user_millis = windows_to_java_time(user_time); | |
892 jlong system_millis = windows_to_java_time(kernel_time); | |
893 *process_real_time = ((double) rtc_millis) / ((double) MILLIUNITS); | |
894 *process_user_time = ((double) user_millis) / ((double) MILLIUNITS); | |
895 *process_system_time = ((double) system_millis) / ((double) MILLIUNITS); | |
896 return true; | |
897 } else { | |
898 return false; | |
899 } | |
900 } | |
901 | |
902 void os::shutdown() { | |
903 | |
904 // allow PerfMemory to attempt cleanup of any persistent resources | |
905 perfMemory_exit(); | |
906 | |
907 // flush buffered output, finish log files | |
908 ostream_abort(); | |
909 | |
910 // Check for abort hook | |
911 abort_hook_t abort_hook = Arguments::abort_hook(); | |
912 if (abort_hook != NULL) { | |
913 abort_hook(); | |
914 } | |
915 } | |
916 | |
917 void os::abort(bool dump_core) | |
918 { | |
919 os::shutdown(); | |
920 // no core dump on Windows | |
921 ::exit(1); | |
922 } | |
923 | |
924 // Die immediately, no exit hook, no abort hook, no cleanup. | |
925 void os::die() { | |
926 _exit(-1); | |
927 } | |
928 | |
929 // Directory routines copied from src/win32/native/java/io/dirent_md.c | |
930 // * dirent_md.c 1.15 00/02/02 | |
931 // | |
932 // The declarations for DIR and struct dirent are in jvm_win32.h. | |
933 | |
934 /* Caller must have already run dirname through JVM_NativePath, which removes | |
935 duplicate slashes and converts all instances of '/' into '\\'. */ | |
936 | |
937 DIR * | |
938 os::opendir(const char *dirname) | |
939 { | |
940 assert(dirname != NULL, "just checking"); // hotspot change | |
941 DIR *dirp = (DIR *)malloc(sizeof(DIR)); | |
942 DWORD fattr; // hotspot change | |
943 char alt_dirname[4] = { 0, 0, 0, 0 }; | |
944 | |
945 if (dirp == 0) { | |
946 errno = ENOMEM; | |
947 return 0; | |
948 } | |
949 | |
950 /* | |
951 * Win32 accepts "\" in its POSIX stat(), but refuses to treat it | |
952 * as a directory in FindFirstFile(). We detect this case here and | |
953 * prepend the current drive name. | |
954 */ | |
955 if (dirname[1] == '\0' && dirname[0] == '\\') { | |
956 alt_dirname[0] = _getdrive() + 'A' - 1; | |
957 alt_dirname[1] = ':'; | |
958 alt_dirname[2] = '\\'; | |
959 alt_dirname[3] = '\0'; | |
960 dirname = alt_dirname; | |
961 } | |
962 | |
963 dirp->path = (char *)malloc(strlen(dirname) + 5); | |
964 if (dirp->path == 0) { | |
965 free(dirp); | |
966 errno = ENOMEM; | |
967 return 0; | |
968 } | |
969 strcpy(dirp->path, dirname); | |
970 | |
971 fattr = GetFileAttributes(dirp->path); | |
972 if (fattr == 0xffffffff) { | |
973 free(dirp->path); | |
974 free(dirp); | |
975 errno = ENOENT; | |
976 return 0; | |
977 } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) { | |
978 free(dirp->path); | |
979 free(dirp); | |
980 errno = ENOTDIR; | |
981 return 0; | |
982 } | |
983 | |
984 /* Append "*.*", or possibly "\\*.*", to path */ | |
985 if (dirp->path[1] == ':' | |
986 && (dirp->path[2] == '\0' | |
987 || (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) { | |
988 /* No '\\' needed for cases like "Z:" or "Z:\" */ | |
989 strcat(dirp->path, "*.*"); | |
990 } else { | |
991 strcat(dirp->path, "\\*.*"); | |
992 } | |
993 | |
994 dirp->handle = FindFirstFile(dirp->path, &dirp->find_data); | |
995 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
996 if (GetLastError() != ERROR_FILE_NOT_FOUND) { | |
997 free(dirp->path); | |
998 free(dirp); | |
999 errno = EACCES; | |
1000 return 0; | |
1001 } | |
1002 } | |
1003 return dirp; | |
1004 } | |
1005 | |
1006 /* parameter dbuf unused on Windows */ | |
1007 | |
1008 struct dirent * | |
1009 os::readdir(DIR *dirp, dirent *dbuf) | |
1010 { | |
1011 assert(dirp != NULL, "just checking"); // hotspot change | |
1012 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
1013 return 0; | |
1014 } | |
1015 | |
1016 strcpy(dirp->dirent.d_name, dirp->find_data.cFileName); | |
1017 | |
1018 if (!FindNextFile(dirp->handle, &dirp->find_data)) { | |
1019 if (GetLastError() == ERROR_INVALID_HANDLE) { | |
1020 errno = EBADF; | |
1021 return 0; | |
1022 } | |
1023 FindClose(dirp->handle); | |
1024 dirp->handle = INVALID_HANDLE_VALUE; | |
1025 } | |
1026 | |
1027 return &dirp->dirent; | |
1028 } | |
1029 | |
1030 int | |
1031 os::closedir(DIR *dirp) | |
1032 { | |
1033 assert(dirp != NULL, "just checking"); // hotspot change | |
1034 if (dirp->handle != INVALID_HANDLE_VALUE) { | |
1035 if (!FindClose(dirp->handle)) { | |
1036 errno = EBADF; | |
1037 return -1; | |
1038 } | |
1039 dirp->handle = INVALID_HANDLE_VALUE; | |
1040 } | |
1041 free(dirp->path); | |
1042 free(dirp); | |
1043 return 0; | |
1044 } | |
1045 | |
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1046 const char* os::get_temp_directory() { |
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1047 const char *prop = Arguments::get_property("java.io.tmpdir"); |
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1048 if (prop != 0) return prop; |
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1049 static char path_buf[MAX_PATH]; |
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1050 if (GetTempPath(MAX_PATH, path_buf)>0) |
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1051 return path_buf; |
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1052 else{ |
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1053 path_buf[0]='\0'; |
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1054 return path_buf; |
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1055 } |
0 | 1056 } |
1057 | |
691 | 1058 static bool file_exists(const char* filename) { |
1059 if (filename == NULL || strlen(filename) == 0) { | |
1060 return false; | |
1061 } | |
1062 return GetFileAttributes(filename) != INVALID_FILE_ATTRIBUTES; | |
1063 } | |
1064 | |
1065 void os::dll_build_name(char *buffer, size_t buflen, | |
1066 const char* pname, const char* fname) { | |
1067 const size_t pnamelen = pname ? strlen(pname) : 0; | |
1068 const char c = (pnamelen > 0) ? pname[pnamelen-1] : 0; | |
1069 | |
1070 // Quietly truncates on buffer overflow. Should be an error. | |
1071 if (pnamelen + strlen(fname) + 10 > buflen) { | |
1072 *buffer = '\0'; | |
1073 return; | |
1074 } | |
1075 | |
1076 if (pnamelen == 0) { | |
1077 jio_snprintf(buffer, buflen, "%s.dll", fname); | |
1078 } else if (c == ':' || c == '\\') { | |
1079 jio_snprintf(buffer, buflen, "%s%s.dll", pname, fname); | |
1080 } else if (strchr(pname, *os::path_separator()) != NULL) { | |
1081 int n; | |
1082 char** pelements = split_path(pname, &n); | |
1083 for (int i = 0 ; i < n ; i++) { | |
1084 char* path = pelements[i]; | |
1085 // Really shouldn't be NULL, but check can't hurt | |
1086 size_t plen = (path == NULL) ? 0 : strlen(path); | |
1087 if (plen == 0) { | |
1088 continue; // skip the empty path values | |
1089 } | |
1090 const char lastchar = path[plen - 1]; | |
1091 if (lastchar == ':' || lastchar == '\\') { | |
1092 jio_snprintf(buffer, buflen, "%s%s.dll", path, fname); | |
1093 } else { | |
1094 jio_snprintf(buffer, buflen, "%s\\%s.dll", path, fname); | |
1095 } | |
1096 if (file_exists(buffer)) { | |
1097 break; | |
1098 } | |
242 | 1099 } |
691 | 1100 // release the storage |
1101 for (int i = 0 ; i < n ; i++) { | |
1102 if (pelements[i] != NULL) { | |
1103 FREE_C_HEAP_ARRAY(char, pelements[i]); | |
1104 } | |
242 | 1105 } |
691 | 1106 if (pelements != NULL) { |
1107 FREE_C_HEAP_ARRAY(char*, pelements); | |
1108 } | |
1109 } else { | |
1110 jio_snprintf(buffer, buflen, "%s\\%s.dll", pname, fname); | |
1111 } | |
242 | 1112 } |
1113 | |
0 | 1114 // Needs to be in os specific directory because windows requires another |
1115 // header file <direct.h> | |
1116 const char* os::get_current_directory(char *buf, int buflen) { | |
1117 return _getcwd(buf, buflen); | |
1118 } | |
1119 | |
1120 //----------------------------------------------------------- | |
1121 // Helper functions for fatal error handler | |
1122 | |
1123 // The following library functions are resolved dynamically at runtime: | |
1124 | |
1125 // PSAPI functions, for Windows NT, 2000, XP | |
1126 | |
1127 // psapi.h doesn't come with Visual Studio 6; it can be downloaded as Platform | |
1128 // SDK from Microsoft. Here are the definitions copied from psapi.h | |
1129 typedef struct _MODULEINFO { | |
1130 LPVOID lpBaseOfDll; | |
1131 DWORD SizeOfImage; | |
1132 LPVOID EntryPoint; | |
1133 } MODULEINFO, *LPMODULEINFO; | |
1134 | |
1135 static BOOL (WINAPI *_EnumProcessModules) ( HANDLE, HMODULE *, DWORD, LPDWORD ); | |
1136 static DWORD (WINAPI *_GetModuleFileNameEx) ( HANDLE, HMODULE, LPTSTR, DWORD ); | |
1137 static BOOL (WINAPI *_GetModuleInformation)( HANDLE, HMODULE, LPMODULEINFO, DWORD ); | |
1138 | |
1139 // ToolHelp Functions, for Windows 95, 98 and ME | |
1140 | |
1141 static HANDLE(WINAPI *_CreateToolhelp32Snapshot)(DWORD,DWORD) ; | |
1142 static BOOL (WINAPI *_Module32First) (HANDLE,LPMODULEENTRY32) ; | |
1143 static BOOL (WINAPI *_Module32Next) (HANDLE,LPMODULEENTRY32) ; | |
1144 | |
1145 bool _has_psapi; | |
1146 bool _psapi_init = false; | |
1147 bool _has_toolhelp; | |
1148 | |
1149 static bool _init_psapi() { | |
1150 HINSTANCE psapi = LoadLibrary( "PSAPI.DLL" ) ; | |
1151 if( psapi == NULL ) return false ; | |
1152 | |
1153 _EnumProcessModules = CAST_TO_FN_PTR( | |
1154 BOOL(WINAPI *)(HANDLE, HMODULE *, DWORD, LPDWORD), | |
1155 GetProcAddress(psapi, "EnumProcessModules")) ; | |
1156 _GetModuleFileNameEx = CAST_TO_FN_PTR( | |
1157 DWORD (WINAPI *)(HANDLE, HMODULE, LPTSTR, DWORD), | |
1158 GetProcAddress(psapi, "GetModuleFileNameExA")); | |
1159 _GetModuleInformation = CAST_TO_FN_PTR( | |
1160 BOOL (WINAPI *)(HANDLE, HMODULE, LPMODULEINFO, DWORD), | |
1161 GetProcAddress(psapi, "GetModuleInformation")); | |
1162 | |
1163 _has_psapi = (_EnumProcessModules && _GetModuleFileNameEx && _GetModuleInformation); | |
1164 _psapi_init = true; | |
1165 return _has_psapi; | |
1166 } | |
1167 | |
1168 static bool _init_toolhelp() { | |
1169 HINSTANCE kernel32 = LoadLibrary("Kernel32.DLL") ; | |
1170 if (kernel32 == NULL) return false ; | |
1171 | |
1172 _CreateToolhelp32Snapshot = CAST_TO_FN_PTR( | |
1173 HANDLE(WINAPI *)(DWORD,DWORD), | |
1174 GetProcAddress(kernel32, "CreateToolhelp32Snapshot")); | |
1175 _Module32First = CAST_TO_FN_PTR( | |
1176 BOOL(WINAPI *)(HANDLE,LPMODULEENTRY32), | |
1177 GetProcAddress(kernel32, "Module32First" )); | |
1178 _Module32Next = CAST_TO_FN_PTR( | |
1179 BOOL(WINAPI *)(HANDLE,LPMODULEENTRY32), | |
1180 GetProcAddress(kernel32, "Module32Next" )); | |
1181 | |
1182 _has_toolhelp = (_CreateToolhelp32Snapshot && _Module32First && _Module32Next); | |
1183 return _has_toolhelp; | |
1184 } | |
1185 | |
1186 #ifdef _WIN64 | |
1187 // Helper routine which returns true if address in | |
1188 // within the NTDLL address space. | |
1189 // | |
1190 static bool _addr_in_ntdll( address addr ) | |
1191 { | |
1192 HMODULE hmod; | |
1193 MODULEINFO minfo; | |
1194 | |
1195 hmod = GetModuleHandle("NTDLL.DLL"); | |
1196 if ( hmod == NULL ) return false; | |
1197 if ( !_GetModuleInformation( GetCurrentProcess(), hmod, | |
1198 &minfo, sizeof(MODULEINFO)) ) | |
1199 return false; | |
1200 | |
1201 if ( (addr >= minfo.lpBaseOfDll) && | |
1202 (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage))) | |
1203 return true; | |
1204 else | |
1205 return false; | |
1206 } | |
1207 #endif | |
1208 | |
1209 | |
1210 // Enumerate all modules for a given process ID | |
1211 // | |
1212 // Notice that Windows 95/98/Me and Windows NT/2000/XP have | |
1213 // different API for doing this. We use PSAPI.DLL on NT based | |
1214 // Windows and ToolHelp on 95/98/Me. | |
1215 | |
1216 // Callback function that is called by enumerate_modules() on | |
1217 // every DLL module. | |
1218 // Input parameters: | |
1219 // int pid, | |
1220 // char* module_file_name, | |
1221 // address module_base_addr, | |
1222 // unsigned module_size, | |
1223 // void* param | |
1224 typedef int (*EnumModulesCallbackFunc)(int, char *, address, unsigned, void *); | |
1225 | |
1226 // enumerate_modules for Windows NT, using PSAPI | |
1227 static int _enumerate_modules_winnt( int pid, EnumModulesCallbackFunc func, void * param) | |
1228 { | |
1229 HANDLE hProcess ; | |
1230 | |
1231 # define MAX_NUM_MODULES 128 | |
1232 HMODULE modules[MAX_NUM_MODULES]; | |
1233 static char filename[ MAX_PATH ]; | |
1234 int result = 0; | |
1235 | |
1236 if (!_has_psapi && (_psapi_init || !_init_psapi())) return 0; | |
1237 | |
1238 hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, | |
1239 FALSE, pid ) ; | |
1240 if (hProcess == NULL) return 0; | |
1241 | |
1242 DWORD size_needed; | |
1243 if (!_EnumProcessModules(hProcess, modules, | |
1244 sizeof(modules), &size_needed)) { | |
1245 CloseHandle( hProcess ); | |
1246 return 0; | |
1247 } | |
1248 | |
1249 // number of modules that are currently loaded | |
1250 int num_modules = size_needed / sizeof(HMODULE); | |
1251 | |
1252 for (int i = 0; i < MIN2(num_modules, MAX_NUM_MODULES); i++) { | |
1253 // Get Full pathname: | |
1254 if(!_GetModuleFileNameEx(hProcess, modules[i], | |
1255 filename, sizeof(filename))) { | |
1256 filename[0] = '\0'; | |
1257 } | |
1258 | |
1259 MODULEINFO modinfo; | |
1260 if (!_GetModuleInformation(hProcess, modules[i], | |
1261 &modinfo, sizeof(modinfo))) { | |
1262 modinfo.lpBaseOfDll = NULL; | |
1263 modinfo.SizeOfImage = 0; | |
1264 } | |
1265 | |
1266 // Invoke callback function | |
1267 result = func(pid, filename, (address)modinfo.lpBaseOfDll, | |
1268 modinfo.SizeOfImage, param); | |
1269 if (result) break; | |
1270 } | |
1271 | |
1272 CloseHandle( hProcess ) ; | |
1273 return result; | |
1274 } | |
1275 | |
1276 | |
1277 // enumerate_modules for Windows 95/98/ME, using TOOLHELP | |
1278 static int _enumerate_modules_windows( int pid, EnumModulesCallbackFunc func, void *param) | |
1279 { | |
1280 HANDLE hSnapShot ; | |
1281 static MODULEENTRY32 modentry ; | |
1282 int result = 0; | |
1283 | |
1284 if (!_has_toolhelp) return 0; | |
1285 | |
1286 // Get a handle to a Toolhelp snapshot of the system | |
1287 hSnapShot = _CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid ) ; | |
1288 if( hSnapShot == INVALID_HANDLE_VALUE ) { | |
1289 return FALSE ; | |
1290 } | |
1291 | |
1292 // iterate through all modules | |
1293 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
1294 bool not_done = _Module32First( hSnapShot, &modentry ) != 0; | |
1295 | |
1296 while( not_done ) { | |
1297 // invoke the callback | |
1298 result=func(pid, modentry.szExePath, (address)modentry.modBaseAddr, | |
1299 modentry.modBaseSize, param); | |
1300 if (result) break; | |
1301 | |
1302 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
1303 not_done = _Module32Next( hSnapShot, &modentry ) != 0; | |
1304 } | |
1305 | |
1306 CloseHandle(hSnapShot); | |
1307 return result; | |
1308 } | |
1309 | |
1310 int enumerate_modules( int pid, EnumModulesCallbackFunc func, void * param ) | |
1311 { | |
1312 // Get current process ID if caller doesn't provide it. | |
1313 if (!pid) pid = os::current_process_id(); | |
1314 | |
1315 if (os::win32::is_nt()) return _enumerate_modules_winnt (pid, func, param); | |
1316 else return _enumerate_modules_windows(pid, func, param); | |
1317 } | |
1318 | |
1319 struct _modinfo { | |
1320 address addr; | |
1321 char* full_path; // point to a char buffer | |
1322 int buflen; // size of the buffer | |
1323 address base_addr; | |
1324 }; | |
1325 | |
1326 static int _locate_module_by_addr(int pid, char * mod_fname, address base_addr, | |
1327 unsigned size, void * param) { | |
1328 struct _modinfo *pmod = (struct _modinfo *)param; | |
1329 if (!pmod) return -1; | |
1330 | |
1331 if (base_addr <= pmod->addr && | |
1332 base_addr+size > pmod->addr) { | |
1333 // if a buffer is provided, copy path name to the buffer | |
1334 if (pmod->full_path) { | |
1335 jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname); | |
1336 } | |
1337 pmod->base_addr = base_addr; | |
1338 return 1; | |
1339 } | |
1340 return 0; | |
1341 } | |
1342 | |
1343 bool os::dll_address_to_library_name(address addr, char* buf, | |
1344 int buflen, int* offset) { | |
1345 // NOTE: the reason we don't use SymGetModuleInfo() is it doesn't always | |
1346 // return the full path to the DLL file, sometimes it returns path | |
1347 // to the corresponding PDB file (debug info); sometimes it only | |
1348 // returns partial path, which makes life painful. | |
1349 | |
1350 struct _modinfo mi; | |
1351 mi.addr = addr; | |
1352 mi.full_path = buf; | |
1353 mi.buflen = buflen; | |
1354 int pid = os::current_process_id(); | |
1355 if (enumerate_modules(pid, _locate_module_by_addr, (void *)&mi)) { | |
1356 // buf already contains path name | |
1357 if (offset) *offset = addr - mi.base_addr; | |
1358 return true; | |
1359 } else { | |
1360 if (buf) buf[0] = '\0'; | |
1361 if (offset) *offset = -1; | |
1362 return false; | |
1363 } | |
1364 } | |
1365 | |
1366 bool os::dll_address_to_function_name(address addr, char *buf, | |
1367 int buflen, int *offset) { | |
1368 // Unimplemented on Windows - in order to use SymGetSymFromAddr(), | |
1369 // we need to initialize imagehlp/dbghelp, then load symbol table | |
1370 // for every module. That's too much work to do after a fatal error. | |
1371 // For an example on how to implement this function, see 1.4.2. | |
1372 if (offset) *offset = -1; | |
1373 if (buf) buf[0] = '\0'; | |
1374 return false; | |
1375 } | |
1376 | |
1377 // save the start and end address of jvm.dll into param[0] and param[1] | |
1378 static int _locate_jvm_dll(int pid, char* mod_fname, address base_addr, | |
1379 unsigned size, void * param) { | |
1380 if (!param) return -1; | |
1381 | |
1382 if (base_addr <= (address)_locate_jvm_dll && | |
1383 base_addr+size > (address)_locate_jvm_dll) { | |
1384 ((address*)param)[0] = base_addr; | |
1385 ((address*)param)[1] = base_addr + size; | |
1386 return 1; | |
1387 } | |
1388 return 0; | |
1389 } | |
1390 | |
1391 address vm_lib_location[2]; // start and end address of jvm.dll | |
1392 | |
1393 // check if addr is inside jvm.dll | |
1394 bool os::address_is_in_vm(address addr) { | |
1395 if (!vm_lib_location[0] || !vm_lib_location[1]) { | |
1396 int pid = os::current_process_id(); | |
1397 if (!enumerate_modules(pid, _locate_jvm_dll, (void *)vm_lib_location)) { | |
1398 assert(false, "Can't find jvm module."); | |
1399 return false; | |
1400 } | |
1401 } | |
1402 | |
1403 return (vm_lib_location[0] <= addr) && (addr < vm_lib_location[1]); | |
1404 } | |
1405 | |
1406 // print module info; param is outputStream* | |
1407 static int _print_module(int pid, char* fname, address base, | |
1408 unsigned size, void* param) { | |
1409 if (!param) return -1; | |
1410 | |
1411 outputStream* st = (outputStream*)param; | |
1412 | |
1413 address end_addr = base + size; | |
1414 st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base, end_addr, fname); | |
1415 return 0; | |
1416 } | |
1417 | |
1418 // Loads .dll/.so and | |
1419 // in case of error it checks if .dll/.so was built for the | |
1420 // same architecture as Hotspot is running on | |
1421 void * os::dll_load(const char *name, char *ebuf, int ebuflen) | |
1422 { | |
1423 void * result = LoadLibrary(name); | |
1424 if (result != NULL) | |
1425 { | |
1426 return result; | |
1427 } | |
1428 | |
1429 long errcode = GetLastError(); | |
1430 if (errcode == ERROR_MOD_NOT_FOUND) { | |
1431 strncpy(ebuf, "Can't find dependent libraries", ebuflen-1); | |
1432 ebuf[ebuflen-1]='\0'; | |
1433 return NULL; | |
1434 } | |
1435 | |
1436 // Parsing dll below | |
1437 // If we can read dll-info and find that dll was built | |
1438 // for an architecture other than Hotspot is running in | |
1439 // - then print to buffer "DLL was built for a different architecture" | |
1440 // else call getLastErrorString to obtain system error message | |
1441 | |
1442 // Read system error message into ebuf | |
1443 // It may or may not be overwritten below (in the for loop and just above) | |
1444 getLastErrorString(ebuf, (size_t) ebuflen); | |
1445 ebuf[ebuflen-1]='\0'; | |
1446 int file_descriptor=::open(name, O_RDONLY | O_BINARY, 0); | |
1447 if (file_descriptor<0) | |
1448 { | |
1449 return NULL; | |
1450 } | |
1451 | |
1452 uint32_t signature_offset; | |
1453 uint16_t lib_arch=0; | |
1454 bool failed_to_get_lib_arch= | |
1455 ( | |
1456 //Go to position 3c in the dll | |
1457 (os::seek_to_file_offset(file_descriptor,IMAGE_FILE_PTR_TO_SIGNATURE)<0) | |
1458 || | |
1459 // Read loacation of signature | |
1460 (sizeof(signature_offset)!= | |
1461 (os::read(file_descriptor, (void*)&signature_offset,sizeof(signature_offset)))) | |
1462 || | |
1463 //Go to COFF File Header in dll | |
1464 //that is located after"signature" (4 bytes long) | |
1465 (os::seek_to_file_offset(file_descriptor, | |
1466 signature_offset+IMAGE_FILE_SIGNATURE_LENGTH)<0) | |
1467 || | |
1468 //Read field that contains code of architecture | |
1469 // that dll was build for | |
1470 (sizeof(lib_arch)!= | |
1471 (os::read(file_descriptor, (void*)&lib_arch,sizeof(lib_arch)))) | |
1472 ); | |
1473 | |
1474 ::close(file_descriptor); | |
1475 if (failed_to_get_lib_arch) | |
1476 { | |
1477 // file i/o error - report getLastErrorString(...) msg | |
1478 return NULL; | |
1479 } | |
1480 | |
1481 typedef struct | |
1482 { | |
1483 uint16_t arch_code; | |
1484 char* arch_name; | |
1485 } arch_t; | |
1486 | |
1487 static const arch_t arch_array[]={ | |
1488 {IMAGE_FILE_MACHINE_I386, (char*)"IA 32"}, | |
1489 {IMAGE_FILE_MACHINE_AMD64, (char*)"AMD 64"}, | |
1490 {IMAGE_FILE_MACHINE_IA64, (char*)"IA 64"} | |
1491 }; | |
1492 #if (defined _M_IA64) | |
1493 static const uint16_t running_arch=IMAGE_FILE_MACHINE_IA64; | |
1494 #elif (defined _M_AMD64) | |
1495 static const uint16_t running_arch=IMAGE_FILE_MACHINE_AMD64; | |
1496 #elif (defined _M_IX86) | |
1497 static const uint16_t running_arch=IMAGE_FILE_MACHINE_I386; | |
1498 #else | |
1499 #error Method os::dll_load requires that one of following \ | |
1500 is defined :_M_IA64,_M_AMD64 or _M_IX86 | |
1501 #endif | |
1502 | |
1503 | |
1504 // Obtain a string for printf operation | |
1505 // lib_arch_str shall contain string what platform this .dll was built for | |
1506 // running_arch_str shall string contain what platform Hotspot was built for | |
1507 char *running_arch_str=NULL,*lib_arch_str=NULL; | |
1508 for (unsigned int i=0;i<ARRAY_SIZE(arch_array);i++) | |
1509 { | |
1510 if (lib_arch==arch_array[i].arch_code) | |
1511 lib_arch_str=arch_array[i].arch_name; | |
1512 if (running_arch==arch_array[i].arch_code) | |
1513 running_arch_str=arch_array[i].arch_name; | |
1514 } | |
1515 | |
1516 assert(running_arch_str, | |
1517 "Didn't find runing architecture code in arch_array"); | |
1518 | |
1519 // If the architure is right | |
1520 // but some other error took place - report getLastErrorString(...) msg | |
1521 if (lib_arch == running_arch) | |
1522 { | |
1523 return NULL; | |
1524 } | |
1525 | |
1526 if (lib_arch_str!=NULL) | |
1527 { | |
1528 ::_snprintf(ebuf, ebuflen-1, | |
1529 "Can't load %s-bit .dll on a %s-bit platform", | |
1530 lib_arch_str,running_arch_str); | |
1531 } | |
1532 else | |
1533 { | |
1534 // don't know what architecture this dll was build for | |
1535 ::_snprintf(ebuf, ebuflen-1, | |
1536 "Can't load this .dll (machine code=0x%x) on a %s-bit platform", | |
1537 lib_arch,running_arch_str); | |
1538 } | |
1539 | |
1540 return NULL; | |
1541 } | |
1542 | |
1543 | |
1544 void os::print_dll_info(outputStream *st) { | |
1545 int pid = os::current_process_id(); | |
1546 st->print_cr("Dynamic libraries:"); | |
1547 enumerate_modules(pid, _print_module, (void *)st); | |
1548 } | |
1549 | |
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1550 // function pointer to Windows API "GetNativeSystemInfo". |
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1551 typedef void (WINAPI *GetNativeSystemInfo_func_type)(LPSYSTEM_INFO); |
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1552 static GetNativeSystemInfo_func_type _GetNativeSystemInfo; |
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1553 |
0 | 1554 void os::print_os_info(outputStream* st) { |
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1555 st->print("OS:"); |
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1556 |
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1557 OSVERSIONINFOEX osvi; |
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1558 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX)); |
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1559 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
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1560 |
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1561 if (!GetVersionEx((OSVERSIONINFO *)&osvi)) { |
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1562 st->print_cr("N/A"); |
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1563 return; |
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1564 } |
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1565 |
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1566 int os_vers = osvi.dwMajorVersion * 1000 + osvi.dwMinorVersion; |
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1567 if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) { |
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1568 switch (os_vers) { |
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1569 case 3051: st->print(" Windows NT 3.51"); break; |
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1570 case 4000: st->print(" Windows NT 4.0"); break; |
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1571 case 5000: st->print(" Windows 2000"); break; |
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1572 case 5001: st->print(" Windows XP"); break; |
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1573 case 5002: |
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|
1574 case 6000: |
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1575 case 6001: { |
273
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1576 // Retrieve SYSTEM_INFO from GetNativeSystemInfo call so that we could |
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1577 // find out whether we are running on 64 bit processor or not. |
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1578 SYSTEM_INFO si; |
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1579 ZeroMemory(&si, sizeof(SYSTEM_INFO)); |
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1580 // Check to see if _GetNativeSystemInfo has been initialized. |
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1581 if (_GetNativeSystemInfo == NULL) { |
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1582 HMODULE hKernel32 = GetModuleHandle(TEXT("kernel32.dll")); |
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1583 _GetNativeSystemInfo = |
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1584 CAST_TO_FN_PTR(GetNativeSystemInfo_func_type, |
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1585 GetProcAddress(hKernel32, |
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1586 "GetNativeSystemInfo")); |
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1587 if (_GetNativeSystemInfo == NULL) |
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1588 GetSystemInfo(&si); |
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1589 } else { |
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1590 _GetNativeSystemInfo(&si); |
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1591 } |
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1592 if (os_vers == 5002) { |
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1593 if (osvi.wProductType == VER_NT_WORKSTATION && |
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1594 si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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1595 st->print(" Windows XP x64 Edition"); |
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1596 else |
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1597 st->print(" Windows Server 2003 family"); |
962
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1598 } else if (os_vers == 6000) { |
273
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1599 if (osvi.wProductType == VER_NT_WORKSTATION) |
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1600 st->print(" Windows Vista"); |
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1601 else |
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1602 st->print(" Windows Server 2008"); |
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1603 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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1604 st->print(" , 64 bit"); |
962
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|
1605 } else if (os_vers == 6001) { |
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|
1606 if (osvi.wProductType == VER_NT_WORKSTATION) { |
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|
1607 st->print(" Windows 7"); |
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|
1608 } else { |
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|
1609 // Unrecognized windows, print out its major and minor versions |
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|
1610 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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|
1611 } |
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1612 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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|
1613 st->print(" , 64 bit"); |
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|
1614 } else { // future os |
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|
1615 // Unrecognized windows, print out its major and minor versions |
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|
1616 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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1617 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
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1618 st->print(" , 64 bit"); |
273
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1619 } |
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1620 break; |
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1621 } |
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1622 default: // future windows, print out its major and minor versions |
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1623 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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1624 } |
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1625 } else { |
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1626 switch (os_vers) { |
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1627 case 4000: st->print(" Windows 95"); break; |
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1628 case 4010: st->print(" Windows 98"); break; |
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1629 case 4090: st->print(" Windows Me"); break; |
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1630 default: // future windows, print out its major and minor versions |
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1631 st->print(" Windows %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
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1632 } |
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|
1633 } |
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|
1634 st->print(" Build %d", osvi.dwBuildNumber); |
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1635 st->print(" %s", osvi.szCSDVersion); // service pack |
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1636 st->cr(); |
0 | 1637 } |
1638 | |
1639 void os::print_memory_info(outputStream* st) { | |
1640 st->print("Memory:"); | |
1641 st->print(" %dk page", os::vm_page_size()>>10); | |
1642 | |
877
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6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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diff
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|
1643 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
8c79517a9300
6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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diff
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|
1644 // value if total memory is larger than 4GB |
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6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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diff
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|
1645 MEMORYSTATUSEX ms; |
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diff
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|
1646 ms.dwLength = sizeof(ms); |
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diff
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|
1647 GlobalMemoryStatusEx(&ms); |
0 | 1648 |
1649 st->print(", physical %uk", os::physical_memory() >> 10); | |
1650 st->print("(%uk free)", os::available_memory() >> 10); | |
1651 | |
877
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|
1652 st->print(", swap %uk", ms.ullTotalPageFile >> 10); |
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diff
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|
1653 st->print("(%uk free)", ms.ullAvailPageFile >> 10); |
0 | 1654 st->cr(); |
1655 } | |
1656 | |
1657 void os::print_siginfo(outputStream *st, void *siginfo) { | |
1658 EXCEPTION_RECORD* er = (EXCEPTION_RECORD*)siginfo; | |
1659 st->print("siginfo:"); | |
1660 st->print(" ExceptionCode=0x%x", er->ExceptionCode); | |
1661 | |
1662 if (er->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
1663 er->NumberParameters >= 2) { | |
1664 switch (er->ExceptionInformation[0]) { | |
1665 case 0: st->print(", reading address"); break; | |
1666 case 1: st->print(", writing address"); break; | |
1667 default: st->print(", ExceptionInformation=" INTPTR_FORMAT, | |
1668 er->ExceptionInformation[0]); | |
1669 } | |
1670 st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]); | |
1671 } else if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR && | |
1672 er->NumberParameters >= 2 && UseSharedSpaces) { | |
1673 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
1674 if (mapinfo->is_in_shared_space((void*)er->ExceptionInformation[1])) { | |
1675 st->print("\n\nError accessing class data sharing archive." \ | |
1676 " Mapped file inaccessible during execution, " \ | |
1677 " possible disk/network problem."); | |
1678 } | |
1679 } else { | |
1680 int num = er->NumberParameters; | |
1681 if (num > 0) { | |
1682 st->print(", ExceptionInformation="); | |
1683 for (int i = 0; i < num; i++) { | |
1684 st->print(INTPTR_FORMAT " ", er->ExceptionInformation[i]); | |
1685 } | |
1686 } | |
1687 } | |
1688 st->cr(); | |
1689 } | |
1690 | |
1691 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
1692 // do nothing | |
1693 } | |
1694 | |
1695 static char saved_jvm_path[MAX_PATH] = {0}; | |
1696 | |
1697 // Find the full path to the current module, jvm.dll or jvm_g.dll | |
1698 void os::jvm_path(char *buf, jint buflen) { | |
1699 // Error checking. | |
1700 if (buflen < MAX_PATH) { | |
1701 assert(false, "must use a large-enough buffer"); | |
1702 buf[0] = '\0'; | |
1703 return; | |
1704 } | |
1705 // Lazy resolve the path to current module. | |
1706 if (saved_jvm_path[0] != 0) { | |
1707 strcpy(buf, saved_jvm_path); | |
1708 return; | |
1709 } | |
1710 | |
1711 GetModuleFileName(vm_lib_handle, buf, buflen); | |
1712 strcpy(saved_jvm_path, buf); | |
1713 } | |
1714 | |
1715 | |
1716 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
1717 #ifndef _WIN64 | |
1718 st->print("_"); | |
1719 #endif | |
1720 } | |
1721 | |
1722 | |
1723 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
1724 #ifndef _WIN64 | |
1725 st->print("@%d", args_size * sizeof(int)); | |
1726 #endif | |
1727 } | |
1728 | |
1980
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|
1729 // This method is a copy of JDK's sysGetLastErrorString |
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|
1730 // from src/windows/hpi/src/system_md.c |
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|
1731 |
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|
1732 size_t os::lasterror(char *buf, size_t len) { |
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|
1733 long errval; |
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|
1734 |
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|
1735 if ((errval = GetLastError()) != 0) { |
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|
1736 /* DOS error */ |
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|
1737 int n = (int)FormatMessage( |
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|
1738 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, |
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|
1739 NULL, |
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diff
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|
1740 errval, |
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|
1741 0, |
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|
1742 buf, |
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|
1743 (DWORD)len, |
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diff
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|
1744 NULL); |
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1745 if (n > 3) { |
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1746 /* Drop final '.', CR, LF */ |
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1747 if (buf[n - 1] == '\n') n--; |
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1748 if (buf[n - 1] == '\r') n--; |
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1749 if (buf[n - 1] == '.') n--; |
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1750 buf[n] = '\0'; |
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1751 } |
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1752 return n; |
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1753 } |
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1754 |
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1755 if (errno != 0) { |
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1756 /* C runtime error that has no corresponding DOS error code */ |
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1757 const char *s = strerror(errno); |
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1758 size_t n = strlen(s); |
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1759 if (n >= len) n = len - 1; |
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1760 strncpy(buf, s, n); |
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1761 buf[n] = '\0'; |
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1762 return n; |
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|
1763 } |
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1764 return 0; |
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1765 } |
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1766 |
0 | 1767 // sun.misc.Signal |
1768 // NOTE that this is a workaround for an apparent kernel bug where if | |
1769 // a signal handler for SIGBREAK is installed then that signal handler | |
1770 // takes priority over the console control handler for CTRL_CLOSE_EVENT. | |
1771 // See bug 4416763. | |
1772 static void (*sigbreakHandler)(int) = NULL; | |
1773 | |
1774 static void UserHandler(int sig, void *siginfo, void *context) { | |
1775 os::signal_notify(sig); | |
1776 // We need to reinstate the signal handler each time... | |
1777 os::signal(sig, (void*)UserHandler); | |
1778 } | |
1779 | |
1780 void* os::user_handler() { | |
1781 return (void*) UserHandler; | |
1782 } | |
1783 | |
1784 void* os::signal(int signal_number, void* handler) { | |
1785 if ((signal_number == SIGBREAK) && (!ReduceSignalUsage)) { | |
1786 void (*oldHandler)(int) = sigbreakHandler; | |
1787 sigbreakHandler = (void (*)(int)) handler; | |
1788 return (void*) oldHandler; | |
1789 } else { | |
1790 return (void*)::signal(signal_number, (void (*)(int))handler); | |
1791 } | |
1792 } | |
1793 | |
1794 void os::signal_raise(int signal_number) { | |
1795 raise(signal_number); | |
1796 } | |
1797 | |
1798 // The Win32 C runtime library maps all console control events other than ^C | |
1799 // into SIGBREAK, which makes it impossible to distinguish ^BREAK from close, | |
1800 // logoff, and shutdown events. We therefore install our own console handler | |
1801 // that raises SIGTERM for the latter cases. | |
1802 // | |
1803 static BOOL WINAPI consoleHandler(DWORD event) { | |
1804 switch(event) { | |
1805 case CTRL_C_EVENT: | |
1806 if (is_error_reported()) { | |
1807 // Ctrl-C is pressed during error reporting, likely because the error | |
1808 // handler fails to abort. Let VM die immediately. | |
1809 os::die(); | |
1810 } | |
1811 | |
1812 os::signal_raise(SIGINT); | |
1813 return TRUE; | |
1814 break; | |
1815 case CTRL_BREAK_EVENT: | |
1816 if (sigbreakHandler != NULL) { | |
1817 (*sigbreakHandler)(SIGBREAK); | |
1818 } | |
1819 return TRUE; | |
1820 break; | |
1821 case CTRL_CLOSE_EVENT: | |
1822 case CTRL_LOGOFF_EVENT: | |
1823 case CTRL_SHUTDOWN_EVENT: | |
1824 os::signal_raise(SIGTERM); | |
1825 return TRUE; | |
1826 break; | |
1827 default: | |
1828 break; | |
1829 } | |
1830 return FALSE; | |
1831 } | |
1832 | |
1833 /* | |
1834 * The following code is moved from os.cpp for making this | |
1835 * code platform specific, which it is by its very nature. | |
1836 */ | |
1837 | |
1838 // Return maximum OS signal used + 1 for internal use only | |
1839 // Used as exit signal for signal_thread | |
1840 int os::sigexitnum_pd(){ | |
1841 return NSIG; | |
1842 } | |
1843 | |
1844 // a counter for each possible signal value, including signal_thread exit signal | |
1845 static volatile jint pending_signals[NSIG+1] = { 0 }; | |
1846 static HANDLE sig_sem; | |
1847 | |
1848 void os::signal_init_pd() { | |
1849 // Initialize signal structures | |
1850 memset((void*)pending_signals, 0, sizeof(pending_signals)); | |
1851 | |
1852 sig_sem = ::CreateSemaphore(NULL, 0, NSIG+1, NULL); | |
1853 | |
1854 // Programs embedding the VM do not want it to attempt to receive | |
1855 // events like CTRL_LOGOFF_EVENT, which are used to implement the | |
1856 // shutdown hooks mechanism introduced in 1.3. For example, when | |
1857 // the VM is run as part of a Windows NT service (i.e., a servlet | |
1858 // engine in a web server), the correct behavior is for any console | |
1859 // control handler to return FALSE, not TRUE, because the OS's | |
1860 // "final" handler for such events allows the process to continue if | |
1861 // it is a service (while terminating it if it is not a service). | |
1862 // To make this behavior uniform and the mechanism simpler, we | |
1863 // completely disable the VM's usage of these console events if -Xrs | |
1864 // (=ReduceSignalUsage) is specified. This means, for example, that | |
1865 // the CTRL-BREAK thread dump mechanism is also disabled in this | |
1866 // case. See bugs 4323062, 4345157, and related bugs. | |
1867 | |
1868 if (!ReduceSignalUsage) { | |
1869 // Add a CTRL-C handler | |
1870 SetConsoleCtrlHandler(consoleHandler, TRUE); | |
1871 } | |
1872 } | |
1873 | |
1874 void os::signal_notify(int signal_number) { | |
1875 BOOL ret; | |
1876 | |
1877 Atomic::inc(&pending_signals[signal_number]); | |
1878 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); | |
1879 assert(ret != 0, "ReleaseSemaphore() failed"); | |
1880 } | |
1881 | |
1882 static int check_pending_signals(bool wait_for_signal) { | |
1883 DWORD ret; | |
1884 while (true) { | |
1885 for (int i = 0; i < NSIG + 1; i++) { | |
1886 jint n = pending_signals[i]; | |
1887 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
1888 return i; | |
1889 } | |
1890 } | |
1891 if (!wait_for_signal) { | |
1892 return -1; | |
1893 } | |
1894 | |
1895 JavaThread *thread = JavaThread::current(); | |
1896 | |
1897 ThreadBlockInVM tbivm(thread); | |
1898 | |
1899 bool threadIsSuspended; | |
1900 do { | |
1901 thread->set_suspend_equivalent(); | |
1902 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
1903 ret = ::WaitForSingleObject(sig_sem, INFINITE); | |
1904 assert(ret == WAIT_OBJECT_0, "WaitForSingleObject() failed"); | |
1905 | |
1906 // were we externally suspended while we were waiting? | |
1907 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
1908 if (threadIsSuspended) { | |
1909 // | |
1910 // The semaphore has been incremented, but while we were waiting | |
1911 // another thread suspended us. We don't want to continue running | |
1912 // while suspended because that would surprise the thread that | |
1913 // suspended us. | |
1914 // | |
1915 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); | |
1916 assert(ret != 0, "ReleaseSemaphore() failed"); | |
1917 | |
1918 thread->java_suspend_self(); | |
1919 } | |
1920 } while (threadIsSuspended); | |
1921 } | |
1922 } | |
1923 | |
1924 int os::signal_lookup() { | |
1925 return check_pending_signals(false); | |
1926 } | |
1927 | |
1928 int os::signal_wait() { | |
1929 return check_pending_signals(true); | |
1930 } | |
1931 | |
1932 // Implicit OS exception handling | |
1933 | |
1934 LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo, address handler) { | |
1935 JavaThread* thread = JavaThread::current(); | |
1936 // Save pc in thread | |
1937 #ifdef _M_IA64 | |
1938 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->StIIP); | |
1939 // Set pc to handler | |
1940 exceptionInfo->ContextRecord->StIIP = (DWORD64)handler; | |
1941 #elif _M_AMD64 | |
1942 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Rip); | |
1943 // Set pc to handler | |
1944 exceptionInfo->ContextRecord->Rip = (DWORD64)handler; | |
1945 #else | |
1946 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Eip); | |
1947 // Set pc to handler | |
1948 exceptionInfo->ContextRecord->Eip = (LONG)handler; | |
1949 #endif | |
1950 | |
1951 // Continue the execution | |
1952 return EXCEPTION_CONTINUE_EXECUTION; | |
1953 } | |
1954 | |
1955 | |
1956 // Used for PostMortemDump | |
1957 extern "C" void safepoints(); | |
1958 extern "C" void find(int x); | |
1959 extern "C" void events(); | |
1960 | |
1961 // According to Windows API documentation, an illegal instruction sequence should generate | |
1962 // the 0xC000001C exception code. However, real world experience shows that occasionnaly | |
1963 // the execution of an illegal instruction can generate the exception code 0xC000001E. This | |
1964 // seems to be an undocumented feature of Win NT 4.0 (and probably other Windows systems). | |
1965 | |
1966 #define EXCEPTION_ILLEGAL_INSTRUCTION_2 0xC000001E | |
1967 | |
1968 // From "Execution Protection in the Windows Operating System" draft 0.35 | |
1969 // Once a system header becomes available, the "real" define should be | |
1970 // included or copied here. | |
1971 #define EXCEPTION_INFO_EXEC_VIOLATION 0x08 | |
1972 | |
1973 #define def_excpt(val) #val, val | |
1974 | |
1975 struct siglabel { | |
1976 char *name; | |
1977 int number; | |
1978 }; | |
1979 | |
1980 struct siglabel exceptlabels[] = { | |
1981 def_excpt(EXCEPTION_ACCESS_VIOLATION), | |
1982 def_excpt(EXCEPTION_DATATYPE_MISALIGNMENT), | |
1983 def_excpt(EXCEPTION_BREAKPOINT), | |
1984 def_excpt(EXCEPTION_SINGLE_STEP), | |
1985 def_excpt(EXCEPTION_ARRAY_BOUNDS_EXCEEDED), | |
1986 def_excpt(EXCEPTION_FLT_DENORMAL_OPERAND), | |
1987 def_excpt(EXCEPTION_FLT_DIVIDE_BY_ZERO), | |
1988 def_excpt(EXCEPTION_FLT_INEXACT_RESULT), | |
1989 def_excpt(EXCEPTION_FLT_INVALID_OPERATION), | |
1990 def_excpt(EXCEPTION_FLT_OVERFLOW), | |
1991 def_excpt(EXCEPTION_FLT_STACK_CHECK), | |
1992 def_excpt(EXCEPTION_FLT_UNDERFLOW), | |
1993 def_excpt(EXCEPTION_INT_DIVIDE_BY_ZERO), | |
1994 def_excpt(EXCEPTION_INT_OVERFLOW), | |
1995 def_excpt(EXCEPTION_PRIV_INSTRUCTION), | |
1996 def_excpt(EXCEPTION_IN_PAGE_ERROR), | |
1997 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION), | |
1998 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION_2), | |
1999 def_excpt(EXCEPTION_NONCONTINUABLE_EXCEPTION), | |
2000 def_excpt(EXCEPTION_STACK_OVERFLOW), | |
2001 def_excpt(EXCEPTION_INVALID_DISPOSITION), | |
2002 def_excpt(EXCEPTION_GUARD_PAGE), | |
2003 def_excpt(EXCEPTION_INVALID_HANDLE), | |
2004 NULL, 0 | |
2005 }; | |
2006 | |
2007 const char* os::exception_name(int exception_code, char *buf, size_t size) { | |
2008 for (int i = 0; exceptlabels[i].name != NULL; i++) { | |
2009 if (exceptlabels[i].number == exception_code) { | |
2010 jio_snprintf(buf, size, "%s", exceptlabels[i].name); | |
2011 return buf; | |
2012 } | |
2013 } | |
2014 | |
2015 return NULL; | |
2016 } | |
2017 | |
2018 //----------------------------------------------------------------------------- | |
2019 LONG Handle_IDiv_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2020 // handle exception caused by idiv; should only happen for -MinInt/-1 | |
2021 // (division by zero is handled explicitly) | |
2022 #ifdef _M_IA64 | |
2023 assert(0, "Fix Handle_IDiv_Exception"); | |
2024 #elif _M_AMD64 | |
2025 PCONTEXT ctx = exceptionInfo->ContextRecord; | |
2026 address pc = (address)ctx->Rip; | |
2027 NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc)); | |
2028 assert(pc[0] == 0xF7, "not an idiv opcode"); | |
2029 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); | |
2030 assert(ctx->Rax == min_jint, "unexpected idiv exception"); | |
2031 // set correct result values and continue after idiv instruction | |
2032 ctx->Rip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes | |
2033 ctx->Rax = (DWORD)min_jint; // result | |
2034 ctx->Rdx = (DWORD)0; // remainder | |
2035 // Continue the execution | |
2036 #else | |
2037 PCONTEXT ctx = exceptionInfo->ContextRecord; | |
2038 address pc = (address)ctx->Eip; | |
2039 NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc)); | |
2040 assert(pc[0] == 0xF7, "not an idiv opcode"); | |
2041 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); | |
2042 assert(ctx->Eax == min_jint, "unexpected idiv exception"); | |
2043 // set correct result values and continue after idiv instruction | |
2044 ctx->Eip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes | |
2045 ctx->Eax = (DWORD)min_jint; // result | |
2046 ctx->Edx = (DWORD)0; // remainder | |
2047 // Continue the execution | |
2048 #endif | |
2049 return EXCEPTION_CONTINUE_EXECUTION; | |
2050 } | |
2051 | |
2052 #ifndef _WIN64 | |
2053 //----------------------------------------------------------------------------- | |
2054 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
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2055 // handle exception caused by native method modifying control word |
0 | 2056 PCONTEXT ctx = exceptionInfo->ContextRecord; |
2057 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2058 | |
2059 switch (exception_code) { | |
2060 case EXCEPTION_FLT_DENORMAL_OPERAND: | |
2061 case EXCEPTION_FLT_DIVIDE_BY_ZERO: | |
2062 case EXCEPTION_FLT_INEXACT_RESULT: | |
2063 case EXCEPTION_FLT_INVALID_OPERATION: | |
2064 case EXCEPTION_FLT_OVERFLOW: | |
2065 case EXCEPTION_FLT_STACK_CHECK: | |
2066 case EXCEPTION_FLT_UNDERFLOW: | |
2067 jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std()); | |
2068 if (fp_control_word != ctx->FloatSave.ControlWord) { | |
2069 // Restore FPCW and mask out FLT exceptions | |
2070 ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0; | |
2071 // Mask out pending FLT exceptions | |
2072 ctx->FloatSave.StatusWord &= 0xffffff00; | |
2073 return EXCEPTION_CONTINUE_EXECUTION; | |
2074 } | |
2075 } | |
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2076 |
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2077 if (prev_uef_handler != NULL) { |
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2078 // We didn't handle this exception so pass it to the previous |
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2079 // UnhandledExceptionFilter. |
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2080 return (prev_uef_handler)(exceptionInfo); |
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2081 } |
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2082 |
0 | 2083 return EXCEPTION_CONTINUE_SEARCH; |
2084 } | |
2085 #else //_WIN64 | |
2086 /* | |
2087 On Windows, the mxcsr control bits are non-volatile across calls | |
2088 See also CR 6192333 | |
2089 If EXCEPTION_FLT_* happened after some native method modified | |
2090 mxcsr - it is not a jvm fault. | |
2091 However should we decide to restore of mxcsr after a faulty | |
2092 native method we can uncomment following code | |
2093 jint MxCsr = INITIAL_MXCSR; | |
2094 // we can't use StubRoutines::addr_mxcsr_std() | |
2095 // because in Win64 mxcsr is not saved there | |
2096 if (MxCsr != ctx->MxCsr) { | |
2097 ctx->MxCsr = MxCsr; | |
2098 return EXCEPTION_CONTINUE_EXECUTION; | |
2099 } | |
2100 | |
2101 */ | |
2102 #endif //_WIN64 | |
2103 | |
2104 | |
2105 // Fatal error reporting is single threaded so we can make this a | |
2106 // static and preallocated. If it's more than MAX_PATH silently ignore | |
2107 // it. | |
2108 static char saved_error_file[MAX_PATH] = {0}; | |
2109 | |
2110 void os::set_error_file(const char *logfile) { | |
2111 if (strlen(logfile) <= MAX_PATH) { | |
2112 strncpy(saved_error_file, logfile, MAX_PATH); | |
2113 } | |
2114 } | |
2115 | |
2116 static inline void report_error(Thread* t, DWORD exception_code, | |
2117 address addr, void* siginfo, void* context) { | |
2118 VMError err(t, exception_code, addr, siginfo, context); | |
2119 err.report_and_die(); | |
2120 | |
2121 // If UseOsErrorReporting, this will return here and save the error file | |
2122 // somewhere where we can find it in the minidump. | |
2123 } | |
2124 | |
2125 //----------------------------------------------------------------------------- | |
2126 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2127 if (InterceptOSException) return EXCEPTION_CONTINUE_SEARCH; | |
2128 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2129 #ifdef _M_IA64 | |
2130 address pc = (address) exceptionInfo->ContextRecord->StIIP; | |
2131 #elif _M_AMD64 | |
2132 address pc = (address) exceptionInfo->ContextRecord->Rip; | |
2133 #else | |
2134 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
2135 #endif | |
2136 Thread* t = ThreadLocalStorage::get_thread_slow(); // slow & steady | |
2137 | |
2138 #ifndef _WIN64 | |
2139 // Execution protection violation - win32 running on AMD64 only | |
2140 // Handled first to avoid misdiagnosis as a "normal" access violation; | |
2141 // This is safe to do because we have a new/unique ExceptionInformation | |
2142 // code for this condition. | |
2143 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2144 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2145 int exception_subcode = (int) exceptionRecord->ExceptionInformation[0]; | |
2146 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2147 | |
2148 if (exception_subcode == EXCEPTION_INFO_EXEC_VIOLATION) { | |
2149 int page_size = os::vm_page_size(); | |
2150 | |
2151 // Make sure the pc and the faulting address are sane. | |
2152 // | |
2153 // If an instruction spans a page boundary, and the page containing | |
2154 // the beginning of the instruction is executable but the following | |
2155 // page is not, the pc and the faulting address might be slightly | |
2156 // different - we still want to unguard the 2nd page in this case. | |
2157 // | |
2158 // 15 bytes seems to be a (very) safe value for max instruction size. | |
2159 bool pc_is_near_addr = | |
2160 (pointer_delta((void*) addr, (void*) pc, sizeof(char)) < 15); | |
2161 bool instr_spans_page_boundary = | |
2162 (align_size_down((intptr_t) pc ^ (intptr_t) addr, | |
2163 (intptr_t) page_size) > 0); | |
2164 | |
2165 if (pc == addr || (pc_is_near_addr && instr_spans_page_boundary)) { | |
2166 static volatile address last_addr = | |
2167 (address) os::non_memory_address_word(); | |
2168 | |
2169 // In conservative mode, don't unguard unless the address is in the VM | |
2170 if (UnguardOnExecutionViolation > 0 && addr != last_addr && | |
2171 (UnguardOnExecutionViolation > 1 || os::address_is_in_vm(addr))) { | |
2172 | |
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2173 // Set memory to RWX and retry |
0 | 2174 address page_start = |
2175 (address) align_size_down((intptr_t) addr, (intptr_t) page_size); | |
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2176 bool res = os::protect_memory((char*) page_start, page_size, |
24fda36852ce
6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
coleenp
parents:
467
diff
changeset
|
2177 os::MEM_PROT_RWX); |
0 | 2178 |
2179 if (PrintMiscellaneous && Verbose) { | |
2180 char buf[256]; | |
2181 jio_snprintf(buf, sizeof(buf), "Execution protection violation " | |
2182 "at " INTPTR_FORMAT | |
2183 ", unguarding " INTPTR_FORMAT ": %s", addr, | |
2184 page_start, (res ? "success" : strerror(errno))); | |
2185 tty->print_raw_cr(buf); | |
2186 } | |
2187 | |
2188 // Set last_addr so if we fault again at the same address, we don't | |
2189 // end up in an endless loop. | |
2190 // | |
2191 // There are two potential complications here. Two threads trapping | |
2192 // at the same address at the same time could cause one of the | |
2193 // threads to think it already unguarded, and abort the VM. Likely | |
2194 // very rare. | |
2195 // | |
2196 // The other race involves two threads alternately trapping at | |
2197 // different addresses and failing to unguard the page, resulting in | |
2198 // an endless loop. This condition is probably even more unlikely | |
2199 // than the first. | |
2200 // | |
2201 // Although both cases could be avoided by using locks or thread | |
2202 // local last_addr, these solutions are unnecessary complication: | |
2203 // this handler is a best-effort safety net, not a complete solution. | |
2204 // It is disabled by default and should only be used as a workaround | |
2205 // in case we missed any no-execute-unsafe VM code. | |
2206 | |
2207 last_addr = addr; | |
2208 | |
2209 return EXCEPTION_CONTINUE_EXECUTION; | |
2210 } | |
2211 } | |
2212 | |
2213 // Last unguard failed or not unguarding | |
2214 tty->print_raw_cr("Execution protection violation"); | |
2215 report_error(t, exception_code, addr, exceptionInfo->ExceptionRecord, | |
2216 exceptionInfo->ContextRecord); | |
2217 return EXCEPTION_CONTINUE_SEARCH; | |
2218 } | |
2219 } | |
2220 #endif // _WIN64 | |
2221 | |
2222 // Check to see if we caught the safepoint code in the | |
2223 // process of write protecting the memory serialization page. | |
2224 // It write enables the page immediately after protecting it | |
2225 // so just return. | |
2226 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
2227 JavaThread* thread = (JavaThread*) t; | |
2228 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2229 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2230 if ( os::is_memory_serialize_page(thread, addr) ) { | |
2231 // Block current thread until the memory serialize page permission restored. | |
2232 os::block_on_serialize_page_trap(); | |
2233 return EXCEPTION_CONTINUE_EXECUTION; | |
2234 } | |
2235 } | |
2236 | |
2237 | |
2238 if (t != NULL && t->is_Java_thread()) { | |
2239 JavaThread* thread = (JavaThread*) t; | |
2240 bool in_java = thread->thread_state() == _thread_in_Java; | |
2241 | |
2242 // Handle potential stack overflows up front. | |
2243 if (exception_code == EXCEPTION_STACK_OVERFLOW) { | |
2244 if (os::uses_stack_guard_pages()) { | |
2245 #ifdef _M_IA64 | |
2246 // | |
2247 // If it's a legal stack address continue, Windows will map it in. | |
2248 // | |
2249 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2250 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2251 if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) | |
2252 return EXCEPTION_CONTINUE_EXECUTION; | |
2253 | |
2254 // The register save area is the same size as the memory stack | |
2255 // and starts at the page just above the start of the memory stack. | |
2256 // If we get a fault in this area, we've run out of register | |
2257 // stack. If we are in java, try throwing a stack overflow exception. | |
2258 if (addr > thread->stack_base() && | |
2259 addr <= (thread->stack_base()+thread->stack_size()) ) { | |
2260 char buf[256]; | |
2261 jio_snprintf(buf, sizeof(buf), | |
2262 "Register stack overflow, addr:%p, stack_base:%p\n", | |
2263 addr, thread->stack_base() ); | |
2264 tty->print_raw_cr(buf); | |
2265 // If not in java code, return and hope for the best. | |
2266 return in_java ? Handle_Exception(exceptionInfo, | |
2267 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) | |
2268 : EXCEPTION_CONTINUE_EXECUTION; | |
2269 } | |
2270 #endif | |
2271 if (thread->stack_yellow_zone_enabled()) { | |
2272 // Yellow zone violation. The o/s has unprotected the first yellow | |
2273 // zone page for us. Note: must call disable_stack_yellow_zone to | |
2274 // update the enabled status, even if the zone contains only one page. | |
2275 thread->disable_stack_yellow_zone(); | |
2276 // If not in java code, return and hope for the best. | |
2277 return in_java ? Handle_Exception(exceptionInfo, | |
2278 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) | |
2279 : EXCEPTION_CONTINUE_EXECUTION; | |
2280 } else { | |
2281 // Fatal red zone violation. | |
2282 thread->disable_stack_red_zone(); | |
2283 tty->print_raw_cr("An unrecoverable stack overflow has occurred."); | |
2284 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2285 exceptionInfo->ContextRecord); | |
2286 return EXCEPTION_CONTINUE_SEARCH; | |
2287 } | |
2288 } else if (in_java) { | |
2289 // JVM-managed guard pages cannot be used on win95/98. The o/s provides | |
2290 // a one-time-only guard page, which it has released to us. The next | |
2291 // stack overflow on this thread will result in an ACCESS_VIOLATION. | |
2292 return Handle_Exception(exceptionInfo, | |
2293 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2294 } else { | |
2295 // Can only return and hope for the best. Further stack growth will | |
2296 // result in an ACCESS_VIOLATION. | |
2297 return EXCEPTION_CONTINUE_EXECUTION; | |
2298 } | |
2299 } else if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2300 // Either stack overflow or null pointer exception. | |
2301 if (in_java) { | |
2302 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2303 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2304 address stack_end = thread->stack_base() - thread->stack_size(); | |
2305 if (addr < stack_end && addr >= stack_end - os::vm_page_size()) { | |
2306 // Stack overflow. | |
2307 assert(!os::uses_stack_guard_pages(), | |
2308 "should be caught by red zone code above."); | |
2309 return Handle_Exception(exceptionInfo, | |
2310 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2311 } | |
2312 // | |
2313 // Check for safepoint polling and implicit null | |
2314 // We only expect null pointers in the stubs (vtable) | |
2315 // the rest are checked explicitly now. | |
2316 // | |
2317 CodeBlob* cb = CodeCache::find_blob(pc); | |
2318 if (cb != NULL) { | |
2319 if (os::is_poll_address(addr)) { | |
2320 address stub = SharedRuntime::get_poll_stub(pc); | |
2321 return Handle_Exception(exceptionInfo, stub); | |
2322 } | |
2323 } | |
2324 { | |
2325 #ifdef _WIN64 | |
2326 // | |
2327 // If it's a legal stack address map the entire region in | |
2328 // | |
2329 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
2330 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
2331 if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) { | |
2332 addr = (address)((uintptr_t)addr & | |
2333 (~((uintptr_t)os::vm_page_size() - (uintptr_t)1))); | |
656 | 2334 os::commit_memory((char *)addr, thread->stack_base() - addr, |
2335 false ); | |
0 | 2336 return EXCEPTION_CONTINUE_EXECUTION; |
2337 } | |
2338 else | |
2339 #endif | |
2340 { | |
2341 // Null pointer exception. | |
2342 #ifdef _M_IA64 | |
2343 // We catch register stack overflows in compiled code by doing | |
2344 // an explicit compare and executing a st8(G0, G0) if the | |
2345 // BSP enters into our guard area. We test for the overflow | |
2346 // condition and fall into the normal null pointer exception | |
2347 // code if BSP hasn't overflowed. | |
2348 if ( in_java ) { | |
2349 if(thread->register_stack_overflow()) { | |
2350 assert((address)exceptionInfo->ContextRecord->IntS3 == | |
2351 thread->register_stack_limit(), | |
2352 "GR7 doesn't contain register_stack_limit"); | |
2353 // Disable the yellow zone which sets the state that | |
2354 // we've got a stack overflow problem. | |
2355 if (thread->stack_yellow_zone_enabled()) { | |
2356 thread->disable_stack_yellow_zone(); | |
2357 } | |
2358 // Give us some room to process the exception | |
2359 thread->disable_register_stack_guard(); | |
2360 // Update GR7 with the new limit so we can continue running | |
2361 // compiled code. | |
2362 exceptionInfo->ContextRecord->IntS3 = | |
2363 (ULONGLONG)thread->register_stack_limit(); | |
2364 return Handle_Exception(exceptionInfo, | |
2365 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
2366 } else { | |
2367 // | |
2368 // Check for implicit null | |
2369 // We only expect null pointers in the stubs (vtable) | |
2370 // the rest are checked explicitly now. | |
2371 // | |
465
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
389
diff
changeset
|
2372 if (((uintptr_t)addr) < os::vm_page_size() ) { |
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
389
diff
changeset
|
2373 // an access to the first page of VM--assume it is a null pointer |
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
389
diff
changeset
|
2374 address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
389
diff
changeset
|
2375 if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
0 | 2376 } |
2377 } | |
2378 } // in_java | |
2379 | |
2380 // IA64 doesn't use implicit null checking yet. So we shouldn't | |
2381 // get here. | |
2382 tty->print_raw_cr("Access violation, possible null pointer exception"); | |
2383 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2384 exceptionInfo->ContextRecord); | |
2385 return EXCEPTION_CONTINUE_SEARCH; | |
2386 #else /* !IA64 */ | |
2387 | |
2388 // Windows 98 reports faulting addresses incorrectly | |
2389 if (!MacroAssembler::needs_explicit_null_check((intptr_t)addr) || | |
2390 !os::win32::is_nt()) { | |
465
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
389
diff
changeset
|
2391 address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
389
diff
changeset
|
2392 if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
0 | 2393 } |
2394 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2395 exceptionInfo->ContextRecord); | |
2396 return EXCEPTION_CONTINUE_SEARCH; | |
2397 #endif | |
2398 } | |
2399 } | |
2400 } | |
2401 | |
2402 #ifdef _WIN64 | |
2403 // Special care for fast JNI field accessors. | |
2404 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks | |
2405 // in and the heap gets shrunk before the field access. | |
2406 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2407 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
2408 if (addr != (address)-1) { | |
2409 return Handle_Exception(exceptionInfo, addr); | |
2410 } | |
2411 } | |
2412 #endif | |
2413 | |
2414 #ifdef _WIN64 | |
2415 // Windows will sometimes generate an access violation | |
2416 // when we call malloc. Since we use VectoredExceptions | |
2417 // on 64 bit platforms, we see this exception. We must | |
2418 // pass this exception on so Windows can recover. | |
2419 // We check to see if the pc of the fault is in NTDLL.DLL | |
2420 // if so, we pass control on to Windows for handling. | |
2421 if (UseVectoredExceptions && _addr_in_ntdll(pc)) return EXCEPTION_CONTINUE_SEARCH; | |
2422 #endif | |
2423 | |
2424 // Stack overflow or null pointer exception in native code. | |
2425 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2426 exceptionInfo->ContextRecord); | |
2427 return EXCEPTION_CONTINUE_SEARCH; | |
2428 } | |
2429 | |
2430 if (in_java) { | |
2431 switch (exception_code) { | |
2432 case EXCEPTION_INT_DIVIDE_BY_ZERO: | |
2433 return Handle_Exception(exceptionInfo, SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO)); | |
2434 | |
2435 case EXCEPTION_INT_OVERFLOW: | |
2436 return Handle_IDiv_Exception(exceptionInfo); | |
2437 | |
2438 } // switch | |
2439 } | |
2440 #ifndef _WIN64 | |
2441 if ((thread->thread_state() == _thread_in_Java) || | |
2442 (thread->thread_state() == _thread_in_native) ) | |
2443 { | |
2444 LONG result=Handle_FLT_Exception(exceptionInfo); | |
2445 if (result==EXCEPTION_CONTINUE_EXECUTION) return result; | |
2446 } | |
2447 #endif //_WIN64 | |
2448 } | |
2449 | |
2450 if (exception_code != EXCEPTION_BREAKPOINT) { | |
2451 #ifndef _WIN64 | |
2452 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2453 exceptionInfo->ContextRecord); | |
2454 #else | |
2455 // Itanium Windows uses a VectoredExceptionHandler | |
2456 // Which means that C++ programatic exception handlers (try/except) | |
2457 // will get here. Continue the search for the right except block if | |
2458 // the exception code is not a fatal code. | |
2459 switch ( exception_code ) { | |
2460 case EXCEPTION_ACCESS_VIOLATION: | |
2461 case EXCEPTION_STACK_OVERFLOW: | |
2462 case EXCEPTION_ILLEGAL_INSTRUCTION: | |
2463 case EXCEPTION_ILLEGAL_INSTRUCTION_2: | |
2464 case EXCEPTION_INT_OVERFLOW: | |
2465 case EXCEPTION_INT_DIVIDE_BY_ZERO: | |
2466 { report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
2467 exceptionInfo->ContextRecord); | |
2468 } | |
2469 break; | |
2470 default: | |
2471 break; | |
2472 } | |
2473 #endif | |
2474 } | |
2475 return EXCEPTION_CONTINUE_SEARCH; | |
2476 } | |
2477 | |
2478 #ifndef _WIN64 | |
2479 // Special care for fast JNI accessors. | |
2480 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in and | |
2481 // the heap gets shrunk before the field access. | |
2482 // Need to install our own structured exception handler since native code may | |
2483 // install its own. | |
2484 LONG WINAPI fastJNIAccessorExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
2485 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
2486 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
2487 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
2488 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
2489 if (addr != (address)-1) { | |
2490 return Handle_Exception(exceptionInfo, addr); | |
2491 } | |
2492 } | |
2493 return EXCEPTION_CONTINUE_SEARCH; | |
2494 } | |
2495 | |
2496 #define DEFINE_FAST_GETFIELD(Return,Fieldname,Result) \ | |
2497 Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, jobject obj, jfieldID fieldID) { \ | |
2498 __try { \ | |
2499 return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, obj, fieldID); \ | |
2500 } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { \ | |
2501 } \ | |
2502 return 0; \ | |
2503 } | |
2504 | |
2505 DEFINE_FAST_GETFIELD(jboolean, bool, Boolean) | |
2506 DEFINE_FAST_GETFIELD(jbyte, byte, Byte) | |
2507 DEFINE_FAST_GETFIELD(jchar, char, Char) | |
2508 DEFINE_FAST_GETFIELD(jshort, short, Short) | |
2509 DEFINE_FAST_GETFIELD(jint, int, Int) | |
2510 DEFINE_FAST_GETFIELD(jlong, long, Long) | |
2511 DEFINE_FAST_GETFIELD(jfloat, float, Float) | |
2512 DEFINE_FAST_GETFIELD(jdouble, double, Double) | |
2513 | |
2514 address os::win32::fast_jni_accessor_wrapper(BasicType type) { | |
2515 switch (type) { | |
2516 case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper; | |
2517 case T_BYTE: return (address)jni_fast_GetByteField_wrapper; | |
2518 case T_CHAR: return (address)jni_fast_GetCharField_wrapper; | |
2519 case T_SHORT: return (address)jni_fast_GetShortField_wrapper; | |
2520 case T_INT: return (address)jni_fast_GetIntField_wrapper; | |
2521 case T_LONG: return (address)jni_fast_GetLongField_wrapper; | |
2522 case T_FLOAT: return (address)jni_fast_GetFloatField_wrapper; | |
2523 case T_DOUBLE: return (address)jni_fast_GetDoubleField_wrapper; | |
2524 default: ShouldNotReachHere(); | |
2525 } | |
2526 return (address)-1; | |
2527 } | |
2528 #endif | |
2529 | |
2530 // Virtual Memory | |
2531 | |
2532 int os::vm_page_size() { return os::win32::vm_page_size(); } | |
2533 int os::vm_allocation_granularity() { | |
2534 return os::win32::vm_allocation_granularity(); | |
2535 } | |
2536 | |
2537 // Windows large page support is available on Windows 2003. In order to use | |
2538 // large page memory, the administrator must first assign additional privilege | |
2539 // to the user: | |
2540 // + select Control Panel -> Administrative Tools -> Local Security Policy | |
2541 // + select Local Policies -> User Rights Assignment | |
2542 // + double click "Lock pages in memory", add users and/or groups | |
2543 // + reboot | |
2544 // Note the above steps are needed for administrator as well, as administrators | |
2545 // by default do not have the privilege to lock pages in memory. | |
2546 // | |
2547 // Note about Windows 2003: although the API supports committing large page | |
2548 // memory on a page-by-page basis and VirtualAlloc() returns success under this | |
2549 // scenario, I found through experiment it only uses large page if the entire | |
2550 // memory region is reserved and committed in a single VirtualAlloc() call. | |
2551 // This makes Windows large page support more or less like Solaris ISM, in | |
2552 // that the entire heap must be committed upfront. This probably will change | |
2553 // in the future, if so the code below needs to be revisited. | |
2554 | |
2555 #ifndef MEM_LARGE_PAGES | |
2556 #define MEM_LARGE_PAGES 0x20000000 | |
2557 #endif | |
2558 | |
2559 // GetLargePageMinimum is only available on Windows 2003. The other functions | |
2560 // are available on NT but not on Windows 98/Me. We have to resolve them at | |
2561 // runtime. | |
2562 typedef SIZE_T (WINAPI *GetLargePageMinimum_func_type) (void); | |
2563 typedef BOOL (WINAPI *AdjustTokenPrivileges_func_type) | |
2564 (HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); | |
2565 typedef BOOL (WINAPI *OpenProcessToken_func_type) (HANDLE, DWORD, PHANDLE); | |
2566 typedef BOOL (WINAPI *LookupPrivilegeValue_func_type) (LPCTSTR, LPCTSTR, PLUID); | |
2567 | |
2568 static GetLargePageMinimum_func_type _GetLargePageMinimum; | |
2569 static AdjustTokenPrivileges_func_type _AdjustTokenPrivileges; | |
2570 static OpenProcessToken_func_type _OpenProcessToken; | |
2571 static LookupPrivilegeValue_func_type _LookupPrivilegeValue; | |
2572 | |
2573 static HINSTANCE _kernel32; | |
2574 static HINSTANCE _advapi32; | |
2575 static HANDLE _hProcess; | |
2576 static HANDLE _hToken; | |
2577 | |
2578 static size_t _large_page_size = 0; | |
2579 | |
2580 static bool resolve_functions_for_large_page_init() { | |
2581 _kernel32 = LoadLibrary("kernel32.dll"); | |
2582 if (_kernel32 == NULL) return false; | |
2583 | |
2584 _GetLargePageMinimum = CAST_TO_FN_PTR(GetLargePageMinimum_func_type, | |
2585 GetProcAddress(_kernel32, "GetLargePageMinimum")); | |
2586 if (_GetLargePageMinimum == NULL) return false; | |
2587 | |
2588 _advapi32 = LoadLibrary("advapi32.dll"); | |
2589 if (_advapi32 == NULL) return false; | |
2590 | |
2591 _AdjustTokenPrivileges = CAST_TO_FN_PTR(AdjustTokenPrivileges_func_type, | |
2592 GetProcAddress(_advapi32, "AdjustTokenPrivileges")); | |
2593 _OpenProcessToken = CAST_TO_FN_PTR(OpenProcessToken_func_type, | |
2594 GetProcAddress(_advapi32, "OpenProcessToken")); | |
2595 _LookupPrivilegeValue = CAST_TO_FN_PTR(LookupPrivilegeValue_func_type, | |
2596 GetProcAddress(_advapi32, "LookupPrivilegeValueA")); | |
2597 return _AdjustTokenPrivileges != NULL && | |
2598 _OpenProcessToken != NULL && | |
2599 _LookupPrivilegeValue != NULL; | |
2600 } | |
2601 | |
2602 static bool request_lock_memory_privilege() { | |
2603 _hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, | |
2604 os::current_process_id()); | |
2605 | |
2606 LUID luid; | |
2607 if (_hProcess != NULL && | |
2608 _OpenProcessToken(_hProcess, TOKEN_ADJUST_PRIVILEGES, &_hToken) && | |
2609 _LookupPrivilegeValue(NULL, "SeLockMemoryPrivilege", &luid)) { | |
2610 | |
2611 TOKEN_PRIVILEGES tp; | |
2612 tp.PrivilegeCount = 1; | |
2613 tp.Privileges[0].Luid = luid; | |
2614 tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; | |
2615 | |
2616 // AdjustTokenPrivileges() may return TRUE even when it couldn't change the | |
2617 // privilege. Check GetLastError() too. See MSDN document. | |
2618 if (_AdjustTokenPrivileges(_hToken, false, &tp, sizeof(tp), NULL, NULL) && | |
2619 (GetLastError() == ERROR_SUCCESS)) { | |
2620 return true; | |
2621 } | |
2622 } | |
2623 | |
2624 return false; | |
2625 } | |
2626 | |
2627 static void cleanup_after_large_page_init() { | |
2628 _GetLargePageMinimum = NULL; | |
2629 _AdjustTokenPrivileges = NULL; | |
2630 _OpenProcessToken = NULL; | |
2631 _LookupPrivilegeValue = NULL; | |
2632 if (_kernel32) FreeLibrary(_kernel32); | |
2633 _kernel32 = NULL; | |
2634 if (_advapi32) FreeLibrary(_advapi32); | |
2635 _advapi32 = NULL; | |
2636 if (_hProcess) CloseHandle(_hProcess); | |
2637 _hProcess = NULL; | |
2638 if (_hToken) CloseHandle(_hToken); | |
2639 _hToken = NULL; | |
2640 } | |
2641 | |
2642 bool os::large_page_init() { | |
2643 if (!UseLargePages) return false; | |
2644 | |
2645 // print a warning if any large page related flag is specified on command line | |
2646 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || | |
2647 !FLAG_IS_DEFAULT(LargePageSizeInBytes); | |
2648 bool success = false; | |
2649 | |
2650 # define WARN(msg) if (warn_on_failure) { warning(msg); } | |
2651 if (resolve_functions_for_large_page_init()) { | |
2652 if (request_lock_memory_privilege()) { | |
2653 size_t s = _GetLargePageMinimum(); | |
2654 if (s) { | |
2655 #if defined(IA32) || defined(AMD64) | |
2656 if (s > 4*M || LargePageSizeInBytes > 4*M) { | |
2657 WARN("JVM cannot use large pages bigger than 4mb."); | |
2658 } else { | |
2659 #endif | |
2660 if (LargePageSizeInBytes && LargePageSizeInBytes % s == 0) { | |
2661 _large_page_size = LargePageSizeInBytes; | |
2662 } else { | |
2663 _large_page_size = s; | |
2664 } | |
2665 success = true; | |
2666 #if defined(IA32) || defined(AMD64) | |
2667 } | |
2668 #endif | |
2669 } else { | |
2670 WARN("Large page is not supported by the processor."); | |
2671 } | |
2672 } else { | |
2673 WARN("JVM cannot use large page memory because it does not have enough privilege to lock pages in memory."); | |
2674 } | |
2675 } else { | |
2676 WARN("Large page is not supported by the operating system."); | |
2677 } | |
2678 #undef WARN | |
2679 | |
2680 const size_t default_page_size = (size_t) vm_page_size(); | |
2681 if (success && _large_page_size > default_page_size) { | |
2682 _page_sizes[0] = _large_page_size; | |
2683 _page_sizes[1] = default_page_size; | |
2684 _page_sizes[2] = 0; | |
2685 } | |
2686 | |
2687 cleanup_after_large_page_init(); | |
2688 return success; | |
2689 } | |
2690 | |
2691 // On win32, one cannot release just a part of reserved memory, it's an | |
2692 // all or nothing deal. When we split a reservation, we must break the | |
2693 // reservation into two reservations. | |
2694 void os::split_reserved_memory(char *base, size_t size, size_t split, | |
2695 bool realloc) { | |
2696 if (size > 0) { | |
2697 release_memory(base, size); | |
2698 if (realloc) { | |
2699 reserve_memory(split, base); | |
2700 } | |
2701 if (size != split) { | |
2702 reserve_memory(size - split, base + split); | |
2703 } | |
2704 } | |
2705 } | |
2706 | |
2707 char* os::reserve_memory(size_t bytes, char* addr, size_t alignment_hint) { | |
2708 assert((size_t)addr % os::vm_allocation_granularity() == 0, | |
2709 "reserve alignment"); | |
2710 assert(bytes % os::vm_allocation_granularity() == 0, "reserve block size"); | |
656 | 2711 char* res = (char*)VirtualAlloc(addr, bytes, MEM_RESERVE, PAGE_READWRITE); |
0 | 2712 assert(res == NULL || addr == NULL || addr == res, |
2713 "Unexpected address from reserve."); | |
2714 return res; | |
2715 } | |
2716 | |
2717 // Reserve memory at an arbitrary address, only if that area is | |
2718 // available (and not reserved for something else). | |
2719 char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) { | |
2720 // Windows os::reserve_memory() fails of the requested address range is | |
2721 // not avilable. | |
2722 return reserve_memory(bytes, requested_addr); | |
2723 } | |
2724 | |
2725 size_t os::large_page_size() { | |
2726 return _large_page_size; | |
2727 } | |
2728 | |
2729 bool os::can_commit_large_page_memory() { | |
2730 // Windows only uses large page memory when the entire region is reserved | |
2731 // and committed in a single VirtualAlloc() call. This may change in the | |
2732 // future, but with Windows 2003 it's not possible to commit on demand. | |
2733 return false; | |
2734 } | |
2735 | |
79
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2736 bool os::can_execute_large_page_memory() { |
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2737 return true; |
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2738 } |
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2739 |
656 | 2740 char* os::reserve_memory_special(size_t bytes, char* addr, bool exec) { |
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2741 |
717 | 2742 const DWORD prot = exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE; |
389
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2743 |
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2744 if (UseLargePagesIndividualAllocation) { |
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2745 if (TracePageSizes && Verbose) { |
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2746 tty->print_cr("Reserving large pages individually."); |
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2747 } |
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2748 char * p_buf; |
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2749 // first reserve enough address space in advance since we want to be |
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2750 // able to break a single contiguous virtual address range into multiple |
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2751 // large page commits but WS2003 does not allow reserving large page space |
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2752 // so we just use 4K pages for reserve, this gives us a legal contiguous |
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2753 // address space. then we will deallocate that reservation, and re alloc |
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2754 // using large pages |
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2755 const size_t size_of_reserve = bytes + _large_page_size; |
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2756 if (bytes > size_of_reserve) { |
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2757 // Overflowed. |
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2758 warning("Individually allocated large pages failed, " |
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2759 "use -XX:-UseLargePagesIndividualAllocation to turn off"); |
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2760 return NULL; |
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2761 } |
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2762 p_buf = (char *) VirtualAlloc(addr, |
389
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2763 size_of_reserve, // size of Reserve |
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2764 MEM_RESERVE, |
656 | 2765 PAGE_READWRITE); |
389
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2766 // If reservation failed, return NULL |
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2767 if (p_buf == NULL) return NULL; |
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2768 |
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2769 release_memory(p_buf, bytes + _large_page_size); |
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2770 // round up to page boundary. If the size_of_reserve did not |
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2771 // overflow and the reservation did not fail, this align up |
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2772 // should not overflow. |
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2773 p_buf = (char *) align_size_up((size_t)p_buf, _large_page_size); |
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2774 |
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2775 // now go through and allocate one page at a time until all bytes are |
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2776 // allocated |
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2777 size_t bytes_remaining = align_size_up(bytes, _large_page_size); |
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2778 // An overflow of align_size_up() would have been caught above |
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2779 // in the calculation of size_of_reserve. |
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2780 char * next_alloc_addr = p_buf; |
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2781 |
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2782 #ifdef ASSERT |
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2783 // Variable for the failure injection |
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2784 long ran_num = os::random(); |
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2785 size_t fail_after = ran_num % bytes; |
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2786 #endif |
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2787 |
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2788 while (bytes_remaining) { |
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2789 size_t bytes_to_rq = MIN2(bytes_remaining, _large_page_size); |
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2790 // Note allocate and commit |
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2791 char * p_new; |
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2792 |
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2793 #ifdef ASSERT |
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2794 bool inject_error = LargePagesIndividualAllocationInjectError && |
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2795 (bytes_remaining <= fail_after); |
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2796 #else |
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2797 const bool inject_error = false; |
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2798 #endif |
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2799 |
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2800 if (inject_error) { |
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2801 p_new = NULL; |
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2802 } else { |
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2803 p_new = (char *) VirtualAlloc(next_alloc_addr, |
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2804 bytes_to_rq, |
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2805 MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES, |
717 | 2806 prot); |
389
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2807 } |
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2808 |
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2809 if (p_new == NULL) { |
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2810 // Free any allocated pages |
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2811 if (next_alloc_addr > p_buf) { |
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2812 // Some memory was committed so release it. |
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2813 size_t bytes_to_release = bytes - bytes_remaining; |
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2814 release_memory(p_buf, bytes_to_release); |
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2815 } |
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2816 #ifdef ASSERT |
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2817 if (UseLargePagesIndividualAllocation && |
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2818 LargePagesIndividualAllocationInjectError) { |
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2819 if (TracePageSizes && Verbose) { |
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2820 tty->print_cr("Reserving large pages individually failed."); |
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2821 } |
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2822 } |
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2823 #endif |
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2824 return NULL; |
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2825 } |
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2826 bytes_remaining -= bytes_to_rq; |
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2827 next_alloc_addr += bytes_to_rq; |
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2828 } |
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2829 |
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2830 return p_buf; |
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2831 |
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2832 } else { |
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2833 // normal policy just allocate it all at once |
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2834 DWORD flag = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES; |
717 | 2835 char * res = (char *)VirtualAlloc(NULL, bytes, flag, prot); |
389
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2836 return res; |
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2837 } |
0 | 2838 } |
2839 | |
2840 bool os::release_memory_special(char* base, size_t bytes) { | |
2841 return release_memory(base, bytes); | |
2842 } | |
2843 | |
2844 void os::print_statistics() { | |
2845 } | |
2846 | |
656 | 2847 bool os::commit_memory(char* addr, size_t bytes, bool exec) { |
0 | 2848 if (bytes == 0) { |
2849 // Don't bother the OS with noops. | |
2850 return true; | |
2851 } | |
2852 assert((size_t) addr % os::vm_page_size() == 0, "commit on page boundaries"); | |
2853 assert(bytes % os::vm_page_size() == 0, "commit in page-sized chunks"); | |
2854 // Don't attempt to print anything if the OS call fails. We're | |
2855 // probably low on resources, so the print itself may cause crashes. | |
656 | 2856 bool result = VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_READWRITE) != 0; |
2857 if (result != NULL && exec) { | |
2858 DWORD oldprot; | |
2859 // Windows doc says to use VirtualProtect to get execute permissions | |
2860 return VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &oldprot) != 0; | |
2861 } else { | |
2862 return result; | |
2863 } | |
0 | 2864 } |
2865 | |
656 | 2866 bool os::commit_memory(char* addr, size_t size, size_t alignment_hint, |
2867 bool exec) { | |
2868 return commit_memory(addr, size, exec); | |
0 | 2869 } |
2870 | |
2871 bool os::uncommit_memory(char* addr, size_t bytes) { | |
2872 if (bytes == 0) { | |
2873 // Don't bother the OS with noops. | |
2874 return true; | |
2875 } | |
2876 assert((size_t) addr % os::vm_page_size() == 0, "uncommit on page boundaries"); | |
2877 assert(bytes % os::vm_page_size() == 0, "uncommit in page-sized chunks"); | |
2878 return VirtualFree(addr, bytes, MEM_DECOMMIT) != 0; | |
2879 } | |
2880 | |
2881 bool os::release_memory(char* addr, size_t bytes) { | |
2882 return VirtualFree(addr, 0, MEM_RELEASE) != 0; | |
2883 } | |
2884 | |
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2885 bool os::create_stack_guard_pages(char* addr, size_t size) { |
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2886 return os::commit_memory(addr, size); |
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2887 } |
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2888 |
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2889 bool os::remove_stack_guard_pages(char* addr, size_t size) { |
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2890 return os::uncommit_memory(addr, size); |
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2891 } |
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2892 |
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2893 // Set protections specified |
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2894 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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2895 bool is_committed) { |
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2896 unsigned int p = 0; |
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2897 switch (prot) { |
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2898 case MEM_PROT_NONE: p = PAGE_NOACCESS; break; |
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2899 case MEM_PROT_READ: p = PAGE_READONLY; break; |
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2900 case MEM_PROT_RW: p = PAGE_READWRITE; break; |
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2901 case MEM_PROT_RWX: p = PAGE_EXECUTE_READWRITE; break; |
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2902 default: |
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2903 ShouldNotReachHere(); |
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2904 } |
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2905 |
0 | 2906 DWORD old_status; |
237
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2907 |
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2908 // Strange enough, but on Win32 one can change protection only for committed |
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2909 // memory, not a big deal anyway, as bytes less or equal than 64K |
656 | 2910 if (!is_committed && !commit_memory(addr, bytes, prot == MEM_PROT_RWX)) { |
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2911 fatal("cannot commit protection page"); |
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2912 } |
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2913 // One cannot use os::guard_memory() here, as on Win32 guard page |
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2914 // have different (one-shot) semantics, from MSDN on PAGE_GUARD: |
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2915 // |
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2916 // Pages in the region become guard pages. Any attempt to access a guard page |
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2917 // causes the system to raise a STATUS_GUARD_PAGE exception and turn off |
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2918 // the guard page status. Guard pages thus act as a one-time access alarm. |
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2919 return VirtualProtect(addr, bytes, p, &old_status) != 0; |
0 | 2920 } |
2921 | |
2922 bool os::guard_memory(char* addr, size_t bytes) { | |
2923 DWORD old_status; | |
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2924 return VirtualProtect(addr, bytes, PAGE_READWRITE | PAGE_GUARD, &old_status) != 0; |
0 | 2925 } |
2926 | |
2927 bool os::unguard_memory(char* addr, size_t bytes) { | |
2928 DWORD old_status; | |
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2929 return VirtualProtect(addr, bytes, PAGE_READWRITE, &old_status) != 0; |
0 | 2930 } |
2931 | |
2932 void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { } | |
2933 void os::free_memory(char *addr, size_t bytes) { } | |
2934 void os::numa_make_global(char *addr, size_t bytes) { } | |
141 | 2935 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { } |
0 | 2936 bool os::numa_topology_changed() { return false; } |
2937 size_t os::numa_get_groups_num() { return 1; } | |
2938 int os::numa_get_group_id() { return 0; } | |
2939 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
2940 if (size > 0) { | |
2941 ids[0] = 0; | |
2942 return 1; | |
2943 } | |
2944 return 0; | |
2945 } | |
2946 | |
2947 bool os::get_page_info(char *start, page_info* info) { | |
2948 return false; | |
2949 } | |
2950 | |
2951 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
2952 return end; | |
2953 } | |
2954 | |
2955 char* os::non_memory_address_word() { | |
2956 // Must never look like an address returned by reserve_memory, | |
2957 // even in its subfields (as defined by the CPU immediate fields, | |
2958 // if the CPU splits constants across multiple instructions). | |
2959 return (char*)-1; | |
2960 } | |
2961 | |
2962 #define MAX_ERROR_COUNT 100 | |
2963 #define SYS_THREAD_ERROR 0xffffffffUL | |
2964 | |
2965 void os::pd_start_thread(Thread* thread) { | |
2966 DWORD ret = ResumeThread(thread->osthread()->thread_handle()); | |
2967 // Returns previous suspend state: | |
2968 // 0: Thread was not suspended | |
2969 // 1: Thread is running now | |
2970 // >1: Thread is still suspended. | |
2971 assert(ret != SYS_THREAD_ERROR, "StartThread failed"); // should propagate back | |
2972 } | |
2973 | |
2974 class HighResolutionInterval { | |
2975 // The default timer resolution seems to be 10 milliseconds. | |
2976 // (Where is this written down?) | |
2977 // If someone wants to sleep for only a fraction of the default, | |
2978 // then we set the timer resolution down to 1 millisecond for | |
2979 // the duration of their interval. | |
2980 // We carefully set the resolution back, since otherwise we | |
2981 // seem to incur an overhead (3%?) that we don't need. | |
2982 // CONSIDER: if ms is small, say 3, then we should run with a high resolution time. | |
2983 // Buf if ms is large, say 500, or 503, we should avoid the call to timeBeginPeriod(). | |
2984 // Alternatively, we could compute the relative error (503/500 = .6%) and only use | |
2985 // timeBeginPeriod() if the relative error exceeded some threshold. | |
2986 // timeBeginPeriod() has been linked to problems with clock drift on win32 systems and | |
2987 // to decreased efficiency related to increased timer "tick" rates. We want to minimize | |
2988 // (a) calls to timeBeginPeriod() and timeEndPeriod() and (b) time spent with high | |
2989 // resolution timers running. | |
2990 private: | |
2991 jlong resolution; | |
2992 public: | |
2993 HighResolutionInterval(jlong ms) { | |
2994 resolution = ms % 10L; | |
2995 if (resolution != 0) { | |
2996 MMRESULT result = timeBeginPeriod(1L); | |
2997 } | |
2998 } | |
2999 ~HighResolutionInterval() { | |
3000 if (resolution != 0) { | |
3001 MMRESULT result = timeEndPeriod(1L); | |
3002 } | |
3003 resolution = 0L; | |
3004 } | |
3005 }; | |
3006 | |
3007 int os::sleep(Thread* thread, jlong ms, bool interruptable) { | |
3008 jlong limit = (jlong) MAXDWORD; | |
3009 | |
3010 while(ms > limit) { | |
3011 int res; | |
3012 if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT) | |
3013 return res; | |
3014 ms -= limit; | |
3015 } | |
3016 | |
3017 assert(thread == Thread::current(), "thread consistency check"); | |
3018 OSThread* osthread = thread->osthread(); | |
3019 OSThreadWaitState osts(osthread, false /* not Object.wait() */); | |
3020 int result; | |
3021 if (interruptable) { | |
3022 assert(thread->is_Java_thread(), "must be java thread"); | |
3023 JavaThread *jt = (JavaThread *) thread; | |
3024 ThreadBlockInVM tbivm(jt); | |
3025 | |
3026 jt->set_suspend_equivalent(); | |
3027 // cleared by handle_special_suspend_equivalent_condition() or | |
3028 // java_suspend_self() via check_and_wait_while_suspended() | |
3029 | |
3030 HANDLE events[1]; | |
3031 events[0] = osthread->interrupt_event(); | |
3032 HighResolutionInterval *phri=NULL; | |
3033 if(!ForceTimeHighResolution) | |
3034 phri = new HighResolutionInterval( ms ); | |
3035 if (WaitForMultipleObjects(1, events, FALSE, (DWORD)ms) == WAIT_TIMEOUT) { | |
3036 result = OS_TIMEOUT; | |
3037 } else { | |
3038 ResetEvent(osthread->interrupt_event()); | |
3039 osthread->set_interrupted(false); | |
3040 result = OS_INTRPT; | |
3041 } | |
3042 delete phri; //if it is NULL, harmless | |
3043 | |
3044 // were we externally suspended while we were waiting? | |
3045 jt->check_and_wait_while_suspended(); | |
3046 } else { | |
3047 assert(!thread->is_Java_thread(), "must not be java thread"); | |
3048 Sleep((long) ms); | |
3049 result = OS_TIMEOUT; | |
3050 } | |
3051 return result; | |
3052 } | |
3053 | |
3054 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
3055 void os::infinite_sleep() { | |
3056 while (true) { // sleep forever ... | |
3057 Sleep(100000); // ... 100 seconds at a time | |
3058 } | |
3059 } | |
3060 | |
3061 typedef BOOL (WINAPI * STTSignature)(void) ; | |
3062 | |
3063 os::YieldResult os::NakedYield() { | |
3064 // Use either SwitchToThread() or Sleep(0) | |
3065 // Consider passing back the return value from SwitchToThread(). | |
3066 // We use GetProcAddress() as ancient Win9X versions of windows doen't support SwitchToThread. | |
3067 // In that case we revert to Sleep(0). | |
3068 static volatile STTSignature stt = (STTSignature) 1 ; | |
3069 | |
3070 if (stt == ((STTSignature) 1)) { | |
3071 stt = (STTSignature) ::GetProcAddress (LoadLibrary ("Kernel32.dll"), "SwitchToThread") ; | |
3072 // It's OK if threads race during initialization as the operation above is idempotent. | |
3073 } | |
3074 if (stt != NULL) { | |
3075 return (*stt)() ? os::YIELD_SWITCHED : os::YIELD_NONEREADY ; | |
3076 } else { | |
3077 Sleep (0) ; | |
3078 } | |
3079 return os::YIELD_UNKNOWN ; | |
3080 } | |
3081 | |
3082 void os::yield() { os::NakedYield(); } | |
3083 | |
3084 void os::yield_all(int attempts) { | |
3085 // Yields to all threads, including threads with lower priorities | |
3086 Sleep(1); | |
3087 } | |
3088 | |
3089 // Win32 only gives you access to seven real priorities at a time, | |
3090 // so we compress Java's ten down to seven. It would be better | |
3091 // if we dynamically adjusted relative priorities. | |
3092 | |
3093 int os::java_to_os_priority[MaxPriority + 1] = { | |
3094 THREAD_PRIORITY_IDLE, // 0 Entry should never be used | |
3095 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
3096 THREAD_PRIORITY_LOWEST, // 2 | |
3097 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
3098 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
3099 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
3100 THREAD_PRIORITY_NORMAL, // 6 | |
3101 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
3102 THREAD_PRIORITY_ABOVE_NORMAL, // 8 | |
3103 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
3104 THREAD_PRIORITY_HIGHEST // 10 MaxPriority | |
3105 }; | |
3106 | |
3107 int prio_policy1[MaxPriority + 1] = { | |
3108 THREAD_PRIORITY_IDLE, // 0 Entry should never be used | |
3109 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
3110 THREAD_PRIORITY_LOWEST, // 2 | |
3111 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
3112 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
3113 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
3114 THREAD_PRIORITY_ABOVE_NORMAL, // 6 | |
3115 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
3116 THREAD_PRIORITY_HIGHEST, // 8 | |
3117 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
3118 THREAD_PRIORITY_TIME_CRITICAL // 10 MaxPriority | |
3119 }; | |
3120 | |
3121 static int prio_init() { | |
3122 // If ThreadPriorityPolicy is 1, switch tables | |
3123 if (ThreadPriorityPolicy == 1) { | |
3124 int i; | |
3125 for (i = 0; i < MaxPriority + 1; i++) { | |
3126 os::java_to_os_priority[i] = prio_policy1[i]; | |
3127 } | |
3128 } | |
3129 return 0; | |
3130 } | |
3131 | |
3132 OSReturn os::set_native_priority(Thread* thread, int priority) { | |
3133 if (!UseThreadPriorities) return OS_OK; | |
3134 bool ret = SetThreadPriority(thread->osthread()->thread_handle(), priority) != 0; | |
3135 return ret ? OS_OK : OS_ERR; | |
3136 } | |
3137 | |
3138 OSReturn os::get_native_priority(const Thread* const thread, int* priority_ptr) { | |
3139 if ( !UseThreadPriorities ) { | |
3140 *priority_ptr = java_to_os_priority[NormPriority]; | |
3141 return OS_OK; | |
3142 } | |
3143 int os_prio = GetThreadPriority(thread->osthread()->thread_handle()); | |
3144 if (os_prio == THREAD_PRIORITY_ERROR_RETURN) { | |
3145 assert(false, "GetThreadPriority failed"); | |
3146 return OS_ERR; | |
3147 } | |
3148 *priority_ptr = os_prio; | |
3149 return OS_OK; | |
3150 } | |
3151 | |
3152 | |
3153 // Hint to the underlying OS that a task switch would not be good. | |
3154 // Void return because it's a hint and can fail. | |
3155 void os::hint_no_preempt() {} | |
3156 | |
3157 void os::interrupt(Thread* thread) { | |
3158 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
3159 "possibility of dangling Thread pointer"); | |
3160 | |
3161 OSThread* osthread = thread->osthread(); | |
3162 osthread->set_interrupted(true); | |
3163 // More than one thread can get here with the same value of osthread, | |
3164 // resulting in multiple notifications. We do, however, want the store | |
3165 // to interrupted() to be visible to other threads before we post | |
3166 // the interrupt event. | |
3167 OrderAccess::release(); | |
3168 SetEvent(osthread->interrupt_event()); | |
3169 // For JSR166: unpark after setting status | |
3170 if (thread->is_Java_thread()) | |
3171 ((JavaThread*)thread)->parker()->unpark(); | |
3172 | |
3173 ParkEvent * ev = thread->_ParkEvent ; | |
3174 if (ev != NULL) ev->unpark() ; | |
3175 | |
3176 } | |
3177 | |
3178 | |
3179 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
3180 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
3181 "possibility of dangling Thread pointer"); | |
3182 | |
3183 OSThread* osthread = thread->osthread(); | |
3184 bool interrupted; | |
3185 interrupted = osthread->interrupted(); | |
3186 if (clear_interrupted == true) { | |
3187 osthread->set_interrupted(false); | |
3188 ResetEvent(osthread->interrupt_event()); | |
3189 } // Otherwise leave the interrupted state alone | |
3190 | |
3191 return interrupted; | |
3192 } | |
3193 | |
3194 // Get's a pc (hint) for a running thread. Currently used only for profiling. | |
3195 ExtendedPC os::get_thread_pc(Thread* thread) { | |
3196 CONTEXT context; | |
3197 context.ContextFlags = CONTEXT_CONTROL; | |
3198 HANDLE handle = thread->osthread()->thread_handle(); | |
3199 #ifdef _M_IA64 | |
3200 assert(0, "Fix get_thread_pc"); | |
3201 return ExtendedPC(NULL); | |
3202 #else | |
3203 if (GetThreadContext(handle, &context)) { | |
3204 #ifdef _M_AMD64 | |
3205 return ExtendedPC((address) context.Rip); | |
3206 #else | |
3207 return ExtendedPC((address) context.Eip); | |
3208 #endif | |
3209 } else { | |
3210 return ExtendedPC(NULL); | |
3211 } | |
3212 #endif | |
3213 } | |
3214 | |
3215 // GetCurrentThreadId() returns DWORD | |
3216 intx os::current_thread_id() { return GetCurrentThreadId(); } | |
3217 | |
3218 static int _initial_pid = 0; | |
3219 | |
3220 int os::current_process_id() | |
3221 { | |
3222 return (_initial_pid ? _initial_pid : _getpid()); | |
3223 } | |
3224 | |
3225 int os::win32::_vm_page_size = 0; | |
3226 int os::win32::_vm_allocation_granularity = 0; | |
3227 int os::win32::_processor_type = 0; | |
3228 // Processor level is not available on non-NT systems, use vm_version instead | |
3229 int os::win32::_processor_level = 0; | |
3230 julong os::win32::_physical_memory = 0; | |
3231 size_t os::win32::_default_stack_size = 0; | |
3232 | |
3233 intx os::win32::_os_thread_limit = 0; | |
3234 volatile intx os::win32::_os_thread_count = 0; | |
3235 | |
3236 bool os::win32::_is_nt = false; | |
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3237 bool os::win32::_is_windows_2003 = false; |
0 | 3238 |
3239 | |
3240 void os::win32::initialize_system_info() { | |
3241 SYSTEM_INFO si; | |
3242 GetSystemInfo(&si); | |
3243 _vm_page_size = si.dwPageSize; | |
3244 _vm_allocation_granularity = si.dwAllocationGranularity; | |
3245 _processor_type = si.dwProcessorType; | |
3246 _processor_level = si.wProcessorLevel; | |
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3247 set_processor_count(si.dwNumberOfProcessors); |
0 | 3248 |
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3249 MEMORYSTATUSEX ms; |
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3250 ms.dwLength = sizeof(ms); |
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3251 |
0 | 3252 // also returns dwAvailPhys (free physical memory bytes), dwTotalVirtual, dwAvailVirtual, |
3253 // dwMemoryLoad (% of memory in use) | |
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3254 GlobalMemoryStatusEx(&ms); |
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3255 _physical_memory = ms.ullTotalPhys; |
0 | 3256 |
3257 OSVERSIONINFO oi; | |
3258 oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
3259 GetVersionEx(&oi); | |
3260 switch(oi.dwPlatformId) { | |
3261 case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break; | |
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3262 case VER_PLATFORM_WIN32_NT: |
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3263 _is_nt = true; |
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3264 { |
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3265 int os_vers = oi.dwMajorVersion * 1000 + oi.dwMinorVersion; |
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3266 if (os_vers == 5002) { |
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3267 _is_windows_2003 = true; |
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3268 } |
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3269 } |
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3270 break; |
0 | 3271 default: fatal("Unknown platform"); |
3272 } | |
3273 | |
3274 _default_stack_size = os::current_stack_size(); | |
3275 assert(_default_stack_size > (size_t) _vm_page_size, "invalid stack size"); | |
3276 assert((_default_stack_size & (_vm_page_size - 1)) == 0, | |
3277 "stack size not a multiple of page size"); | |
3278 | |
3279 initialize_performance_counter(); | |
3280 | |
3281 // Win95/Win98 scheduler bug work-around. The Win95/98 scheduler is | |
3282 // known to deadlock the system, if the VM issues to thread operations with | |
3283 // a too high frequency, e.g., such as changing the priorities. | |
3284 // The 6000 seems to work well - no deadlocks has been notices on the test | |
3285 // programs that we have seen experience this problem. | |
3286 if (!os::win32::is_nt()) { | |
3287 StarvationMonitorInterval = 6000; | |
3288 } | |
3289 } | |
3290 | |
3291 | |
3292 void os::win32::setmode_streams() { | |
3293 _setmode(_fileno(stdin), _O_BINARY); | |
3294 _setmode(_fileno(stdout), _O_BINARY); | |
3295 _setmode(_fileno(stderr), _O_BINARY); | |
3296 } | |
3297 | |
3298 | |
3299 int os::message_box(const char* title, const char* message) { | |
3300 int result = MessageBox(NULL, message, title, | |
3301 MB_YESNO | MB_ICONERROR | MB_SYSTEMMODAL | MB_DEFAULT_DESKTOP_ONLY); | |
3302 return result == IDYES; | |
3303 } | |
3304 | |
3305 int os::allocate_thread_local_storage() { | |
3306 return TlsAlloc(); | |
3307 } | |
3308 | |
3309 | |
3310 void os::free_thread_local_storage(int index) { | |
3311 TlsFree(index); | |
3312 } | |
3313 | |
3314 | |
3315 void os::thread_local_storage_at_put(int index, void* value) { | |
3316 TlsSetValue(index, value); | |
3317 assert(thread_local_storage_at(index) == value, "Just checking"); | |
3318 } | |
3319 | |
3320 | |
3321 void* os::thread_local_storage_at(int index) { | |
3322 return TlsGetValue(index); | |
3323 } | |
3324 | |
3325 | |
3326 #ifndef PRODUCT | |
3327 #ifndef _WIN64 | |
3328 // Helpers to check whether NX protection is enabled | |
3329 int nx_exception_filter(_EXCEPTION_POINTERS *pex) { | |
3330 if (pex->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
3331 pex->ExceptionRecord->NumberParameters > 0 && | |
3332 pex->ExceptionRecord->ExceptionInformation[0] == | |
3333 EXCEPTION_INFO_EXEC_VIOLATION) { | |
3334 return EXCEPTION_EXECUTE_HANDLER; | |
3335 } | |
3336 return EXCEPTION_CONTINUE_SEARCH; | |
3337 } | |
3338 | |
3339 void nx_check_protection() { | |
3340 // If NX is enabled we'll get an exception calling into code on the stack | |
3341 char code[] = { (char)0xC3 }; // ret | |
3342 void *code_ptr = (void *)code; | |
3343 __try { | |
3344 __asm call code_ptr | |
3345 } __except(nx_exception_filter((_EXCEPTION_POINTERS*)_exception_info())) { | |
3346 tty->print_raw_cr("NX protection detected."); | |
3347 } | |
3348 } | |
3349 #endif // _WIN64 | |
3350 #endif // PRODUCT | |
3351 | |
3352 // this is called _before_ the global arguments have been parsed | |
3353 void os::init(void) { | |
3354 _initial_pid = _getpid(); | |
3355 | |
3356 init_random(1234567); | |
3357 | |
3358 win32::initialize_system_info(); | |
3359 win32::setmode_streams(); | |
3360 init_page_sizes((size_t) win32::vm_page_size()); | |
3361 | |
3362 // For better scalability on MP systems (must be called after initialize_system_info) | |
3363 #ifndef PRODUCT | |
3364 if (is_MP()) { | |
3365 NoYieldsInMicrolock = true; | |
3366 } | |
3367 #endif | |
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3368 // This may be overridden later when argument processing is done. |
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3369 FLAG_SET_ERGO(bool, UseLargePagesIndividualAllocation, |
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3370 os::win32::is_windows_2003()); |
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3371 |
0 | 3372 // Initialize main_process and main_thread |
3373 main_process = GetCurrentProcess(); // Remember main_process is a pseudo handle | |
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3374 if (!DuplicateHandle(main_process, GetCurrentThread(), main_process, |
0 | 3375 &main_thread, THREAD_ALL_ACCESS, false, 0)) { |
3376 fatal("DuplicateHandle failed\n"); | |
3377 } | |
3378 main_thread_id = (int) GetCurrentThreadId(); | |
3379 } | |
3380 | |
3381 // To install functions for atexit processing | |
3382 extern "C" { | |
3383 static void perfMemory_exit_helper() { | |
3384 perfMemory_exit(); | |
3385 } | |
3386 } | |
3387 | |
3388 // this is called _after_ the global arguments have been parsed | |
3389 jint os::init_2(void) { | |
3390 // Allocate a single page and mark it as readable for safepoint polling | |
3391 address polling_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READONLY); | |
3392 guarantee( polling_page != NULL, "Reserve Failed for polling page"); | |
3393 | |
3394 address return_page = (address)VirtualAlloc(polling_page, os::vm_page_size(), MEM_COMMIT, PAGE_READONLY); | |
3395 guarantee( return_page != NULL, "Commit Failed for polling page"); | |
3396 | |
3397 os::set_polling_page( polling_page ); | |
3398 | |
3399 #ifndef PRODUCT | |
3400 if( Verbose && PrintMiscellaneous ) | |
3401 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
3402 #endif | |
3403 | |
3404 if (!UseMembar) { | |
656 | 3405 address mem_serialize_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READWRITE); |
0 | 3406 guarantee( mem_serialize_page != NULL, "Reserve Failed for memory serialize page"); |
3407 | |
656 | 3408 return_page = (address)VirtualAlloc(mem_serialize_page, os::vm_page_size(), MEM_COMMIT, PAGE_READWRITE); |
0 | 3409 guarantee( return_page != NULL, "Commit Failed for memory serialize page"); |
3410 | |
3411 os::set_memory_serialize_page( mem_serialize_page ); | |
3412 | |
3413 #ifndef PRODUCT | |
3414 if(Verbose && PrintMiscellaneous) | |
3415 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
3416 #endif | |
3417 } | |
3418 | |
3419 FLAG_SET_DEFAULT(UseLargePages, os::large_page_init()); | |
3420 | |
3421 // Setup Windows Exceptions | |
3422 | |
3423 // On Itanium systems, Structured Exception Handling does not | |
3424 // work since stack frames must be walkable by the OS. Since | |
3425 // much of our code is dynamically generated, and we do not have | |
3426 // proper unwind .xdata sections, the system simply exits | |
3427 // rather than delivering the exception. To work around | |
3428 // this we use VectorExceptions instead. | |
3429 #ifdef _WIN64 | |
3430 if (UseVectoredExceptions) { | |
3431 topLevelVectoredExceptionHandler = AddVectoredExceptionHandler( 1, topLevelExceptionFilter); | |
3432 } | |
3433 #endif | |
3434 | |
3435 // for debugging float code generation bugs | |
3436 if (ForceFloatExceptions) { | |
3437 #ifndef _WIN64 | |
3438 static long fp_control_word = 0; | |
3439 __asm { fstcw fp_control_word } | |
3440 // see Intel PPro Manual, Vol. 2, p 7-16 | |
3441 const long precision = 0x20; | |
3442 const long underflow = 0x10; | |
3443 const long overflow = 0x08; | |
3444 const long zero_div = 0x04; | |
3445 const long denorm = 0x02; | |
3446 const long invalid = 0x01; | |
3447 fp_control_word |= invalid; | |
3448 __asm { fldcw fp_control_word } | |
3449 #endif | |
3450 } | |
3451 | |
3452 // If stack_commit_size is 0, windows will reserve the default size, | |
3453 // but only commit a small portion of it. | |
3454 size_t stack_commit_size = round_to(ThreadStackSize*K, os::vm_page_size()); | |
3455 size_t default_reserve_size = os::win32::default_stack_size(); | |
3456 size_t actual_reserve_size = stack_commit_size; | |
3457 if (stack_commit_size < default_reserve_size) { | |
3458 // If stack_commit_size == 0, we want this too | |
3459 actual_reserve_size = default_reserve_size; | |
3460 } | |
3461 | |
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3462 // Check minimum allowable stack size for thread creation and to initialize |
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3463 // the java system classes, including StackOverflowError - depends on page |
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3464 // size. Add a page for compiler2 recursion in main thread. |
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3465 // Add in 2*BytesPerWord times page size to account for VM stack during |
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3466 // class initialization depending on 32 or 64 bit VM. |
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3467 size_t min_stack_allowed = |
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3468 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
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3469 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size(); |
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3470 if (actual_reserve_size < min_stack_allowed) { |
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3471 tty->print_cr("\nThe stack size specified is too small, " |
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3472 "Specify at least %dk", |
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3473 min_stack_allowed / K); |
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3474 return JNI_ERR; |
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3475 } |
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3476 |
0 | 3477 JavaThread::set_stack_size_at_create(stack_commit_size); |
3478 | |
3479 // Calculate theoretical max. size of Threads to guard gainst artifical | |
3480 // out-of-memory situations, where all available address-space has been | |
3481 // reserved by thread stacks. | |
3482 assert(actual_reserve_size != 0, "Must have a stack"); | |
3483 | |
3484 // Calculate the thread limit when we should start doing Virtual Memory | |
3485 // banging. Currently when the threads will have used all but 200Mb of space. | |
3486 // | |
3487 // TODO: consider performing a similar calculation for commit size instead | |
3488 // as reserve size, since on a 64-bit platform we'll run into that more | |
3489 // often than running out of virtual memory space. We can use the | |
3490 // lower value of the two calculations as the os_thread_limit. | |
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3491 size_t max_address_space = ((size_t)1 << (BitsPerWord - 1)) - (200 * K * K); |
0 | 3492 win32::_os_thread_limit = (intx)(max_address_space / actual_reserve_size); |
3493 | |
3494 // at exit methods are called in the reverse order of their registration. | |
3495 // there is no limit to the number of functions registered. atexit does | |
3496 // not set errno. | |
3497 | |
3498 if (PerfAllowAtExitRegistration) { | |
3499 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
3500 // atexit functions can be delayed until process exit time, which | |
3501 // can be problematic for embedded VM situations. Embedded VMs should | |
3502 // call DestroyJavaVM() to assure that VM resources are released. | |
3503 | |
3504 // note: perfMemory_exit_helper atexit function may be removed in | |
3505 // the future if the appropriate cleanup code can be added to the | |
3506 // VM_Exit VMOperation's doit method. | |
3507 if (atexit(perfMemory_exit_helper) != 0) { | |
3508 warning("os::init_2 atexit(perfMemory_exit_helper) failed"); | |
3509 } | |
3510 } | |
3511 | |
3512 // initialize PSAPI or ToolHelp for fatal error handler | |
3513 if (win32::is_nt()) _init_psapi(); | |
3514 else _init_toolhelp(); | |
3515 | |
3516 #ifndef _WIN64 | |
3517 // Print something if NX is enabled (win32 on AMD64) | |
3518 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) nx_check_protection()); | |
3519 #endif | |
3520 | |
3521 // initialize thread priority policy | |
3522 prio_init(); | |
3523 | |
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3524 if (UseNUMA && !ForceNUMA) { |
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3525 UseNUMA = false; // Currently unsupported. |
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3526 } |
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3527 |
0 | 3528 return JNI_OK; |
3529 } | |
3530 | |
1681
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3531 void os::init_3(void) { |
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3532 return; |
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3533 } |
0 | 3534 |
3535 // Mark the polling page as unreadable | |
3536 void os::make_polling_page_unreadable(void) { | |
3537 DWORD old_status; | |
3538 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_NOACCESS, &old_status) ) | |
3539 fatal("Could not disable polling page"); | |
3540 }; | |
3541 | |
3542 // Mark the polling page as readable | |
3543 void os::make_polling_page_readable(void) { | |
3544 DWORD old_status; | |
3545 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_READONLY, &old_status) ) | |
3546 fatal("Could not enable polling page"); | |
3547 }; | |
3548 | |
3549 | |
3550 int os::stat(const char *path, struct stat *sbuf) { | |
3551 char pathbuf[MAX_PATH]; | |
3552 if (strlen(path) > MAX_PATH - 1) { | |
3553 errno = ENAMETOOLONG; | |
3554 return -1; | |
3555 } | |
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3556 os::native_path(strcpy(pathbuf, path)); |
0 | 3557 int ret = ::stat(pathbuf, sbuf); |
3558 if (sbuf != NULL && UseUTCFileTimestamp) { | |
3559 // Fix for 6539723. st_mtime returned from stat() is dependent on | |
3560 // the system timezone and so can return different values for the | |
3561 // same file if/when daylight savings time changes. This adjustment | |
3562 // makes sure the same timestamp is returned regardless of the TZ. | |
3563 // | |
3564 // See: | |
3565 // http://msdn.microsoft.com/library/ | |
3566 // default.asp?url=/library/en-us/sysinfo/base/ | |
3567 // time_zone_information_str.asp | |
3568 // and | |
3569 // http://msdn.microsoft.com/library/default.asp?url= | |
3570 // /library/en-us/sysinfo/base/settimezoneinformation.asp | |
3571 // | |
3572 // NOTE: there is a insidious bug here: If the timezone is changed | |
3573 // after the call to stat() but before 'GetTimeZoneInformation()', then | |
3574 // the adjustment we do here will be wrong and we'll return the wrong | |
3575 // value (which will likely end up creating an invalid class data | |
3576 // archive). Absent a better API for this, or some time zone locking | |
3577 // mechanism, we'll have to live with this risk. | |
3578 TIME_ZONE_INFORMATION tz; | |
3579 DWORD tzid = GetTimeZoneInformation(&tz); | |
3580 int daylightBias = | |
3581 (tzid == TIME_ZONE_ID_DAYLIGHT) ? tz.DaylightBias : tz.StandardBias; | |
3582 sbuf->st_mtime += (tz.Bias + daylightBias) * 60; | |
3583 } | |
3584 return ret; | |
3585 } | |
3586 | |
3587 | |
3588 #define FT2INT64(ft) \ | |
3589 ((jlong)((jlong)(ft).dwHighDateTime << 32 | (julong)(ft).dwLowDateTime)) | |
3590 | |
3591 | |
3592 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
3593 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
3594 // of a thread. | |
3595 // | |
3596 // current_thread_cpu_time() and thread_cpu_time(Thread*) returns | |
3597 // the fast estimate available on the platform. | |
3598 | |
3599 // current_thread_cpu_time() is not optimized for Windows yet | |
3600 jlong os::current_thread_cpu_time() { | |
3601 // return user + sys since the cost is the same | |
3602 return os::thread_cpu_time(Thread::current(), true /* user+sys */); | |
3603 } | |
3604 | |
3605 jlong os::thread_cpu_time(Thread* thread) { | |
3606 // consistent with what current_thread_cpu_time() returns. | |
3607 return os::thread_cpu_time(thread, true /* user+sys */); | |
3608 } | |
3609 | |
3610 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
3611 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
3612 } | |
3613 | |
3614 jlong os::thread_cpu_time(Thread* thread, bool user_sys_cpu_time) { | |
3615 // This code is copy from clasic VM -> hpi::sysThreadCPUTime | |
3616 // If this function changes, os::is_thread_cpu_time_supported() should too | |
3617 if (os::win32::is_nt()) { | |
3618 FILETIME CreationTime; | |
3619 FILETIME ExitTime; | |
3620 FILETIME KernelTime; | |
3621 FILETIME UserTime; | |
3622 | |
3623 if ( GetThreadTimes(thread->osthread()->thread_handle(), | |
3624 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
3625 return -1; | |
3626 else | |
3627 if (user_sys_cpu_time) { | |
3628 return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100; | |
3629 } else { | |
3630 return FT2INT64(UserTime) * 100; | |
3631 } | |
3632 } else { | |
3633 return (jlong) timeGetTime() * 1000000; | |
3634 } | |
3635 } | |
3636 | |
3637 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
3638 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
3639 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
3640 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
3641 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
3642 } | |
3643 | |
3644 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
3645 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
3646 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
3647 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
3648 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
3649 } | |
3650 | |
3651 bool os::is_thread_cpu_time_supported() { | |
3652 // see os::thread_cpu_time | |
3653 if (os::win32::is_nt()) { | |
3654 FILETIME CreationTime; | |
3655 FILETIME ExitTime; | |
3656 FILETIME KernelTime; | |
3657 FILETIME UserTime; | |
3658 | |
3659 if ( GetThreadTimes(GetCurrentThread(), | |
3660 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
3661 return false; | |
3662 else | |
3663 return true; | |
3664 } else { | |
3665 return false; | |
3666 } | |
3667 } | |
3668 | |
3669 // Windows does't provide a loadavg primitive so this is stubbed out for now. | |
3670 // It does have primitives (PDH API) to get CPU usage and run queue length. | |
3671 // "\\Processor(_Total)\\% Processor Time", "\\System\\Processor Queue Length" | |
3672 // If we wanted to implement loadavg on Windows, we have a few options: | |
3673 // | |
3674 // a) Query CPU usage and run queue length and "fake" an answer by | |
3675 // returning the CPU usage if it's under 100%, and the run queue | |
3676 // length otherwise. It turns out that querying is pretty slow | |
3677 // on Windows, on the order of 200 microseconds on a fast machine. | |
3678 // Note that on the Windows the CPU usage value is the % usage | |
3679 // since the last time the API was called (and the first call | |
3680 // returns 100%), so we'd have to deal with that as well. | |
3681 // | |
3682 // b) Sample the "fake" answer using a sampling thread and store | |
3683 // the answer in a global variable. The call to loadavg would | |
3684 // just return the value of the global, avoiding the slow query. | |
3685 // | |
3686 // c) Sample a better answer using exponential decay to smooth the | |
3687 // value. This is basically the algorithm used by UNIX kernels. | |
3688 // | |
3689 // Note that sampling thread starvation could affect both (b) and (c). | |
3690 int os::loadavg(double loadavg[], int nelem) { | |
3691 return -1; | |
3692 } | |
3693 | |
3694 | |
3695 // DontYieldALot=false by default: dutifully perform all yields as requested by JVM_Yield() | |
3696 bool os::dont_yield() { | |
3697 return DontYieldALot; | |
3698 } | |
3699 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3700 // This method is a slightly reworked copy of JDK's sysOpen |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3701 // 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
|
3702 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3703 int os::open(const char *path, int oflag, int mode) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3704 char pathbuf[MAX_PATH]; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3705 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3706 if (strlen(path) > MAX_PATH - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3707 errno = ENAMETOOLONG; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3708 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3709 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3710 os::native_path(strcpy(pathbuf, path)); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3711 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
|
3712 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3713 |
0 | 3714 // Is a (classpath) directory empty? |
3715 bool os::dir_is_empty(const char* path) { | |
3716 WIN32_FIND_DATA fd; | |
3717 HANDLE f = FindFirstFile(path, &fd); | |
3718 if (f == INVALID_HANDLE_VALUE) { | |
3719 return true; | |
3720 } | |
3721 FindClose(f); | |
3722 return false; | |
3723 } | |
3724 | |
3725 // create binary file, rewriting existing file if required | |
3726 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
3727 int oflags = _O_CREAT | _O_WRONLY | _O_BINARY; | |
3728 if (!rewrite_existing) { | |
3729 oflags |= _O_EXCL; | |
3730 } | |
3731 return ::open(path, oflags, _S_IREAD | _S_IWRITE); | |
3732 } | |
3733 | |
3734 // return current position of file pointer | |
3735 jlong os::current_file_offset(int fd) { | |
3736 return (jlong)::_lseeki64(fd, (__int64)0L, SEEK_CUR); | |
3737 } | |
3738 | |
3739 // move file pointer to the specified offset | |
3740 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
3741 return (jlong)::_lseeki64(fd, (__int64)offset, SEEK_SET); | |
3742 } | |
3743 | |
3744 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3745 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
|
3746 return (jlong) ::_lseeki64(fd, offset, whence); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3747 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3748 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3749 // 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
|
3750 // from src/windows/hpi/src/path_md.c |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3751 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3752 /* 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
|
3753 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
|
3754 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
|
3755 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
|
3756 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
|
3757 treat double-byte lead characters correctly. |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3758 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3759 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
parents:
1972
diff
changeset
|
3760 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
|
3761 succeeds. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3762 char * os::native_path(char *path) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3763 char *src = path, *dst = path, *end = path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3764 char *colon = NULL; /* If a drive specifier is found, this will |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3765 point to the colon following the drive |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3766 letter */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3767 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3768 /* Assumption: '/', '\\', ':', and drive letters are never lead bytes */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3769 assert(((!::IsDBCSLeadByte('/')) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3770 && (!::IsDBCSLeadByte('\\')) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3771 && (!::IsDBCSLeadByte(':'))), |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3772 "Illegal lead byte"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3773 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3774 /* Check for leading separators */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3775 #define isfilesep(c) ((c) == '/' || (c) == '\\') |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3776 while (isfilesep(*src)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3777 src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3778 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3779 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3780 if (::isalpha(*src) && !::IsDBCSLeadByte(*src) && src[1] == ':') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3781 /* 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
|
3782 hack is necessary to support file URLs containing drive |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3783 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
|
3784 "/c:/path" can be used as an alternative to "c:/path". */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3785 *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3786 colon = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3787 *dst++ = ':'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3788 src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3789 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3790 src = path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3791 if (isfilesep(src[0]) && isfilesep(src[1])) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3792 /* 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
|
3793 second separator so that further separators will be collapsed |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3794 into the second separator. The result will be a pathname |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3795 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
|
3796 src = dst = path + 1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3797 path[0] = '\\'; /* Force first separator to '\\' */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3798 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3799 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3800 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3801 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3802 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3803 /* 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
|
3804 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
|
3805 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
|
3806 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
|
3807 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3808 while (*src != '\0') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3809 if (isfilesep(*src)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3810 *dst++ = '\\'; src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3811 while (isfilesep(*src)) src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3812 if (*src == '\0') { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3813 /* Check for trailing separator */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3814 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3815 if (colon == dst - 2) break; /* "z:\\" */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3816 if (dst == path + 1) break; /* "\\" */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 if (dst == path + 2 && isfilesep(path[0])) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3818 /* "\\\\" is not collapsed to "\\" because "\\\\" marks the |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3819 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
|
3820 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
|
3821 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
|
3822 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
|
3823 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
|
3824 directory of the current drive. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3825 break; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3826 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3827 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
|
3828 remove trailing separator */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3829 break; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3830 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3831 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3832 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3833 if (::IsDBCSLeadByte(*src)) { /* Copy a double-byte character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3834 *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3835 if (*src) *dst++ = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3836 end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3837 } else { /* Copy a single-byte character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3838 char c = *src++; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3839 *dst++ = c; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3840 /* Space is not a legal ending character */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3841 if (c != ' ') end = dst; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3842 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3843 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3844 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3845 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3846 *end = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3847 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3848 /* 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
|
3849 if (colon == dst - 1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3850 path[2] = '.'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3851 path[3] = '\0'; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3852 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3853 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3854 #ifdef DEBUG |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3855 jio_fprintf(stderr, "sysNativePath: %s\n", path); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3856 #endif DEBUG |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3857 return path; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3858 } |
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 // 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
|
3861 // 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
|
3862 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3863 int os::ftruncate(int fd, jlong length) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3864 HANDLE h = (HANDLE)::_get_osfhandle(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3865 long high = (long)(length >> 32); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3866 DWORD ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3867 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3868 if (h == (HANDLE)(-1)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3869 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3870 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3871 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3872 ret = ::SetFilePointer(h, (long)(length), &high, FILE_BEGIN); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3873 if ((ret == 0xFFFFFFFF) && (::GetLastError() != NO_ERROR)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3874 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3875 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3876 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3877 if (::SetEndOfFile(h) == FALSE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3878 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3879 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3880 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3881 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3882 } |
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 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3885 // 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
|
3886 // 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
|
3887 // 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
|
3888 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3889 int os::fsync(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3890 HANDLE handle = (HANDLE)::_get_osfhandle(fd); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3891 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3892 if ( (!::FlushFileBuffers(handle)) && |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3893 (GetLastError() != ERROR_ACCESS_DENIED) ) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3894 /* from winerror.h */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3895 return -1; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3896 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3897 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3898 } |
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 static int nonSeekAvailable(int, long *); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3901 static int stdinAvailable(int, long *); |
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 #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
|
3904 #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
|
3905 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3906 // 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
|
3907 // 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
|
3908 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3909 int os::available(int fd, jlong *bytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3910 jlong cur, end; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3911 struct _stati64 stbuf64; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3912 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3913 if (::_fstati64(fd, &stbuf64) >= 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3914 int mode = stbuf64.st_mode; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3915 if (S_ISCHR(mode) || S_ISFIFO(mode)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3916 int ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3917 long lpbytes; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3918 if (fd == 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3919 ret = stdinAvailable(fd, &lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3920 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3921 ret = nonSeekAvailable(fd, &lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3922 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3923 (*bytes) = (jlong)(lpbytes); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3924 return ret; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3925 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3926 if ((cur = ::_lseeki64(fd, 0L, SEEK_CUR)) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3927 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3928 } 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
|
3929 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3930 } else if (::_lseeki64(fd, cur, SEEK_SET) == -1) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3931 return FALSE; |
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 *bytes = end - cur; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3934 return TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3935 } else { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3936 return FALSE; |
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 } |
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 // 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
|
3941 // 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
|
3942 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3943 static int nonSeekAvailable(int fd, long *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3944 /* 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
|
3945 * (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
|
3946 * connected to an exec'd process). |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3947 * Standard Input is a special case. |
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 */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3950 HANDLE han; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3951 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3952 if ((han = (HANDLE) ::_get_osfhandle(fd)) == (HANDLE)(-1)) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3953 return FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3954 } |
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 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
|
3957 /* 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
|
3958 * 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
|
3959 * 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
|
3960 * The only alternative is to raise an Exception, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3961 * which isn't really warranted. |
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 if (::GetLastError() != ERROR_BROKEN_PIPE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3964 return FALSE; |
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 *pbytes = 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3967 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3968 return TRUE; |
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 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3971 #define MAX_INPUT_EVENTS 2000 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3972 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3973 // 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
|
3974 // 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
|
3975 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3976 static int stdinAvailable(int fd, long *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3977 HANDLE han; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3978 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
|
3979 DWORD numEvents = 0; /* Number of events in buffer */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3980 DWORD i = 0; /* Loop index */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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3981 DWORD curLength = 0; /* Position marker */ |
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3982 DWORD actualLength = 0; /* Number of bytes readable */ |
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3983 BOOL error = FALSE; /* Error holder */ |
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3984 INPUT_RECORD *lpBuffer; /* Pointer to records of input events */ |
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3985 |
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3986 if ((han = ::GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
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3987 return FALSE; |
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|
3988 } |
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3989 |
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3990 /* Construct an array of input records in the console buffer */ |
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3991 error = ::GetNumberOfConsoleInputEvents(han, &numEvents); |
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3992 if (error == 0) { |
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3993 return nonSeekAvailable(fd, pbytes); |
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3994 } |
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3995 |
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3996 /* lpBuffer must fit into 64K or else PeekConsoleInput fails */ |
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3997 if (numEvents > MAX_INPUT_EVENTS) { |
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3998 numEvents = MAX_INPUT_EVENTS; |
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3999 } |
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4000 |
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4001 lpBuffer = (INPUT_RECORD *)os::malloc(numEvents * sizeof(INPUT_RECORD)); |
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4002 if (lpBuffer == NULL) { |
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4003 return FALSE; |
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4004 } |
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4005 |
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4006 error = ::PeekConsoleInput(han, lpBuffer, numEvents, &numEventsRead); |
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4007 if (error == 0) { |
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4008 os::free(lpBuffer); |
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4009 return FALSE; |
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|
4010 } |
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|
4011 |
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4012 /* Examine input records for the number of bytes available */ |
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4013 for(i=0; i<numEvents; i++) { |
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4014 if (lpBuffer[i].EventType == KEY_EVENT) { |
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4015 |
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4016 KEY_EVENT_RECORD *keyRecord = (KEY_EVENT_RECORD *) |
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4017 &(lpBuffer[i].Event); |
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4018 if (keyRecord->bKeyDown == TRUE) { |
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4019 CHAR *keyPressed = (CHAR *) &(keyRecord->uChar); |
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4020 curLength++; |
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4021 if (*keyPressed == '\r') { |
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4022 actualLength = curLength; |
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4023 } |
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4024 } |
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|
4025 } |
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|
4026 } |
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|
4027 |
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4028 if(lpBuffer != NULL) { |
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4029 os::free(lpBuffer); |
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|
4030 } |
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|
4031 |
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4032 *pbytes = (long) actualLength; |
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|
4033 return TRUE; |
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|
4034 } |
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4035 |
0 | 4036 // Map a block of memory. |
4037 char* os::map_memory(int fd, const char* file_name, size_t file_offset, | |
4038 char *addr, size_t bytes, bool read_only, | |
4039 bool allow_exec) { | |
4040 HANDLE hFile; | |
4041 char* base; | |
4042 | |
4043 hFile = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, | |
4044 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); | |
4045 if (hFile == NULL) { | |
4046 if (PrintMiscellaneous && Verbose) { | |
4047 DWORD err = GetLastError(); | |
4048 tty->print_cr("CreateFile() failed: GetLastError->%ld."); | |
4049 } | |
4050 return NULL; | |
4051 } | |
4052 | |
4053 if (allow_exec) { | |
4054 // CreateFileMapping/MapViewOfFileEx can't map executable memory | |
4055 // unless it comes from a PE image (which the shared archive is not.) | |
4056 // Even VirtualProtect refuses to give execute access to mapped memory | |
4057 // that was not previously executable. | |
4058 // | |
4059 // Instead, stick the executable region in anonymous memory. Yuck. | |
4060 // Penalty is that ~4 pages will not be shareable - in the future | |
4061 // we might consider DLLizing the shared archive with a proper PE | |
4062 // header so that mapping executable + sharing is possible. | |
4063 | |
4064 base = (char*) VirtualAlloc(addr, bytes, MEM_COMMIT | MEM_RESERVE, | |
4065 PAGE_READWRITE); | |
4066 if (base == NULL) { | |
4067 if (PrintMiscellaneous && Verbose) { | |
4068 DWORD err = GetLastError(); | |
4069 tty->print_cr("VirtualAlloc() failed: GetLastError->%ld.", err); | |
4070 } | |
4071 CloseHandle(hFile); | |
4072 return NULL; | |
4073 } | |
4074 | |
4075 DWORD bytes_read; | |
4076 OVERLAPPED overlapped; | |
4077 overlapped.Offset = (DWORD)file_offset; | |
4078 overlapped.OffsetHigh = 0; | |
4079 overlapped.hEvent = NULL; | |
4080 // ReadFile guarantees that if the return value is true, the requested | |
4081 // number of bytes were read before returning. | |
4082 bool res = ReadFile(hFile, base, (DWORD)bytes, &bytes_read, &overlapped) != 0; | |
4083 if (!res) { | |
4084 if (PrintMiscellaneous && Verbose) { | |
4085 DWORD err = GetLastError(); | |
4086 tty->print_cr("ReadFile() failed: GetLastError->%ld.", err); | |
4087 } | |
4088 release_memory(base, bytes); | |
4089 CloseHandle(hFile); | |
4090 return NULL; | |
4091 } | |
4092 } else { | |
4093 HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, | |
4094 NULL /*file_name*/); | |
4095 if (hMap == NULL) { | |
4096 if (PrintMiscellaneous && Verbose) { | |
4097 DWORD err = GetLastError(); | |
4098 tty->print_cr("CreateFileMapping() failed: GetLastError->%ld."); | |
4099 } | |
4100 CloseHandle(hFile); | |
4101 return NULL; | |
4102 } | |
4103 | |
4104 DWORD access = read_only ? FILE_MAP_READ : FILE_MAP_COPY; | |
4105 base = (char*)MapViewOfFileEx(hMap, access, 0, (DWORD)file_offset, | |
4106 (DWORD)bytes, addr); | |
4107 if (base == NULL) { | |
4108 if (PrintMiscellaneous && Verbose) { | |
4109 DWORD err = GetLastError(); | |
4110 tty->print_cr("MapViewOfFileEx() failed: GetLastError->%ld.", err); | |
4111 } | |
4112 CloseHandle(hMap); | |
4113 CloseHandle(hFile); | |
4114 return NULL; | |
4115 } | |
4116 | |
4117 if (CloseHandle(hMap) == 0) { | |
4118 if (PrintMiscellaneous && Verbose) { | |
4119 DWORD err = GetLastError(); | |
4120 tty->print_cr("CloseHandle(hMap) failed: GetLastError->%ld.", err); | |
4121 } | |
4122 CloseHandle(hFile); | |
4123 return base; | |
4124 } | |
4125 } | |
4126 | |
4127 if (allow_exec) { | |
4128 DWORD old_protect; | |
4129 DWORD exec_access = read_only ? PAGE_EXECUTE_READ : PAGE_EXECUTE_READWRITE; | |
4130 bool res = VirtualProtect(base, bytes, exec_access, &old_protect) != 0; | |
4131 | |
4132 if (!res) { | |
4133 if (PrintMiscellaneous && Verbose) { | |
4134 DWORD err = GetLastError(); | |
4135 tty->print_cr("VirtualProtect() failed: GetLastError->%ld.", err); | |
4136 } | |
4137 // Don't consider this a hard error, on IA32 even if the | |
4138 // VirtualProtect fails, we should still be able to execute | |
4139 CloseHandle(hFile); | |
4140 return base; | |
4141 } | |
4142 } | |
4143 | |
4144 if (CloseHandle(hFile) == 0) { | |
4145 if (PrintMiscellaneous && Verbose) { | |
4146 DWORD err = GetLastError(); | |
4147 tty->print_cr("CloseHandle(hFile) failed: GetLastError->%ld.", err); | |
4148 } | |
4149 return base; | |
4150 } | |
4151 | |
4152 return base; | |
4153 } | |
4154 | |
4155 | |
4156 // Remap a block of memory. | |
4157 char* os::remap_memory(int fd, const char* file_name, size_t file_offset, | |
4158 char *addr, size_t bytes, bool read_only, | |
4159 bool allow_exec) { | |
4160 // This OS does not allow existing memory maps to be remapped so we | |
4161 // have to unmap the memory before we remap it. | |
4162 if (!os::unmap_memory(addr, bytes)) { | |
4163 return NULL; | |
4164 } | |
4165 | |
4166 // There is a very small theoretical window between the unmap_memory() | |
4167 // call above and the map_memory() call below where a thread in native | |
4168 // code may be able to access an address that is no longer mapped. | |
4169 | |
4170 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
4171 allow_exec); | |
4172 } | |
4173 | |
4174 | |
4175 // Unmap a block of memory. | |
4176 // Returns true=success, otherwise false. | |
4177 | |
4178 bool os::unmap_memory(char* addr, size_t bytes) { | |
4179 BOOL result = UnmapViewOfFile(addr); | |
4180 if (result == 0) { | |
4181 if (PrintMiscellaneous && Verbose) { | |
4182 DWORD err = GetLastError(); | |
4183 tty->print_cr("UnmapViewOfFile() failed: GetLastError->%ld.", err); | |
4184 } | |
4185 return false; | |
4186 } | |
4187 return true; | |
4188 } | |
4189 | |
4190 void os::pause() { | |
4191 char filename[MAX_PATH]; | |
4192 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
4193 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
4194 } else { | |
4195 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
4196 } | |
4197 | |
4198 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
4199 if (fd != -1) { | |
4200 struct stat buf; | |
1980
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diff
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|
4201 ::close(fd); |
0 | 4202 while (::stat(filename, &buf) == 0) { |
4203 Sleep(100); | |
4204 } | |
4205 } else { | |
4206 jio_fprintf(stderr, | |
4207 "Could not open pause file '%s', continuing immediately.\n", filename); | |
4208 } | |
4209 } | |
4210 | |
4211 // An Event wraps a win32 "CreateEvent" kernel handle. | |
4212 // | |
4213 // We have a number of choices regarding "CreateEvent" win32 handle leakage: | |
4214 // | |
4215 // 1: When a thread dies return the Event to the EventFreeList, clear the ParkHandle | |
4216 // field, and call CloseHandle() on the win32 event handle. Unpark() would | |
4217 // need to be modified to tolerate finding a NULL (invalid) win32 event handle. | |
4218 // In addition, an unpark() operation might fetch the handle field, but the | |
4219 // event could recycle between the fetch and the SetEvent() operation. | |
4220 // SetEvent() would either fail because the handle was invalid, or inadvertently work, | |
4221 // as the win32 handle value had been recycled. In an ideal world calling SetEvent() | |
4222 // on an stale but recycled handle would be harmless, but in practice this might | |
4223 // confuse other non-Sun code, so it's not a viable approach. | |
4224 // | |
4225 // 2: Once a win32 event handle is associated with an Event, it remains associated | |
4226 // with the Event. The event handle is never closed. This could be construed | |
4227 // as handle leakage, but only up to the maximum # of threads that have been extant | |
4228 // at any one time. This shouldn't be an issue, as windows platforms typically | |
4229 // permit a process to have hundreds of thousands of open handles. | |
4230 // | |
4231 // 3: Same as (1), but periodically, at stop-the-world time, rundown the EventFreeList | |
4232 // and release unused handles. | |
4233 // | |
4234 // 4: Add a CRITICAL_SECTION to the Event to protect LD+SetEvent from LD;ST(null);CloseHandle. | |
4235 // It's not clear, however, that we wouldn't be trading one type of leak for another. | |
4236 // | |
4237 // 5. Use an RCU-like mechanism (Read-Copy Update). | |
4238 // Or perhaps something similar to Maged Michael's "Hazard pointers". | |
4239 // | |
4240 // We use (2). | |
4241 // | |
4242 // TODO-FIXME: | |
4243 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the objectmonitor implementation. | |
4244 // 2. Consider wrapping the WaitForSingleObject(Ex) calls in SEH try/finally blocks | |
4245 // to recover from (or at least detect) the dreaded Windows 841176 bug. | |
4246 // 3. Collapse the interrupt_event, the JSR166 parker event, and the objectmonitor ParkEvent | |
4247 // into a single win32 CreateEvent() handle. | |
4248 // | |
4249 // _Event transitions in park() | |
4250 // -1 => -1 : illegal | |
4251 // 1 => 0 : pass - return immediately | |
4252 // 0 => -1 : block | |
4253 // | |
4254 // _Event serves as a restricted-range semaphore : | |
4255 // -1 : thread is blocked | |
4256 // 0 : neutral - thread is running or ready | |
4257 // 1 : signaled - thread is running or ready | |
4258 // | |
4259 // Another possible encoding of _Event would be | |
4260 // with explicit "PARKED" and "SIGNALED" bits. | |
4261 | |
4262 int os::PlatformEvent::park (jlong Millis) { | |
4263 guarantee (_ParkHandle != NULL , "Invariant") ; | |
4264 guarantee (Millis > 0 , "Invariant") ; | |
4265 int v ; | |
4266 | |
4267 // CONSIDER: defer assigning a CreateEvent() handle to the Event until | |
4268 // the initial park() operation. | |
4269 | |
4270 for (;;) { | |
4271 v = _Event ; | |
4272 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
4273 } | |
4274 guarantee ((v == 0) || (v == 1), "invariant") ; | |
4275 if (v != 0) return OS_OK ; | |
4276 | |
4277 // Do this the hard way by blocking ... | |
4278 // TODO: consider a brief spin here, gated on the success of recent | |
4279 // spin attempts by this thread. | |
4280 // | |
4281 // We decompose long timeouts into series of shorter timed waits. | |
4282 // Evidently large timo values passed in WaitForSingleObject() are problematic on some | |
4283 // versions of Windows. See EventWait() for details. This may be superstition. Or not. | |
4284 // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time | |
4285 // with os::javaTimeNanos(). Furthermore, we assume that spurious returns from | |
4286 // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend | |
4287 // to happen early in the wait interval. Specifically, after a spurious wakeup (rv == | |
4288 // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate | |
4289 // for the already waited time. This policy does not admit any new outcomes. | |
4290 // In the future, however, we might want to track the accumulated wait time and | |
4291 // adjust Millis accordingly if we encounter a spurious wakeup. | |
4292 | |
4293 const int MAXTIMEOUT = 0x10000000 ; | |
4294 DWORD rv = WAIT_TIMEOUT ; | |
4295 while (_Event < 0 && Millis > 0) { | |
4296 DWORD prd = Millis ; // set prd = MAX (Millis, MAXTIMEOUT) | |
4297 if (Millis > MAXTIMEOUT) { | |
4298 prd = MAXTIMEOUT ; | |
4299 } | |
4300 rv = ::WaitForSingleObject (_ParkHandle, prd) ; | |
4301 assert (rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed") ; | |
4302 if (rv == WAIT_TIMEOUT) { | |
4303 Millis -= prd ; | |
4304 } | |
4305 } | |
4306 v = _Event ; | |
4307 _Event = 0 ; | |
4308 OrderAccess::fence() ; | |
4309 // If we encounter a nearly simultanous timeout expiry and unpark() | |
4310 // we return OS_OK indicating we awoke via unpark(). | |
4311 // Implementor's license -- returning OS_TIMEOUT would be equally valid, however. | |
4312 return (v >= 0) ? OS_OK : OS_TIMEOUT ; | |
4313 } | |
4314 | |
4315 void os::PlatformEvent::park () { | |
4316 guarantee (_ParkHandle != NULL, "Invariant") ; | |
4317 // Invariant: Only the thread associated with the Event/PlatformEvent | |
4318 // may call park(). | |
4319 int v ; | |
4320 for (;;) { | |
4321 v = _Event ; | |
4322 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
4323 } | |
4324 guarantee ((v == 0) || (v == 1), "invariant") ; | |
4325 if (v != 0) return ; | |
4326 | |
4327 // Do this the hard way by blocking ... | |
4328 // TODO: consider a brief spin here, gated on the success of recent | |
4329 // spin attempts by this thread. | |
4330 while (_Event < 0) { | |
4331 DWORD rv = ::WaitForSingleObject (_ParkHandle, INFINITE) ; | |
4332 assert (rv == WAIT_OBJECT_0, "WaitForSingleObject failed") ; | |
4333 } | |
4334 | |
4335 // Usually we'll find _Event == 0 at this point, but as | |
4336 // an optional optimization we clear it, just in case can | |
4337 // multiple unpark() operations drove _Event up to 1. | |
4338 _Event = 0 ; | |
4339 OrderAccess::fence() ; | |
4340 guarantee (_Event >= 0, "invariant") ; | |
4341 } | |
4342 | |
4343 void os::PlatformEvent::unpark() { | |
4344 guarantee (_ParkHandle != NULL, "Invariant") ; | |
4345 int v ; | |
4346 for (;;) { | |
4347 v = _Event ; // Increment _Event if it's < 1. | |
4348 if (v > 0) { | |
4349 // If it's already signaled just return. | |
4350 // The LD of _Event could have reordered or be satisfied | |
4351 // by a read-aside from this processor's write buffer. | |
4352 // To avoid problems execute a barrier and then | |
4353 // ratify the value. A degenerate CAS() would also work. | |
4354 // Viz., CAS (v+0, &_Event, v) == v). | |
4355 OrderAccess::fence() ; | |
4356 if (_Event == v) return ; | |
4357 continue ; | |
4358 } | |
4359 if (Atomic::cmpxchg (v+1, &_Event, v) == v) break ; | |
4360 } | |
4361 if (v < 0) { | |
4362 ::SetEvent (_ParkHandle) ; | |
4363 } | |
4364 } | |
4365 | |
4366 | |
4367 // JSR166 | |
4368 // ------------------------------------------------------- | |
4369 | |
4370 /* | |
4371 * The Windows implementation of Park is very straightforward: Basic | |
4372 * operations on Win32 Events turn out to have the right semantics to | |
4373 * use them directly. We opportunistically resuse the event inherited | |
4374 * from Monitor. | |
4375 */ | |
4376 | |
4377 | |
4378 void Parker::park(bool isAbsolute, jlong time) { | |
4379 guarantee (_ParkEvent != NULL, "invariant") ; | |
4380 // First, demultiplex/decode time arguments | |
4381 if (time < 0) { // don't wait | |
4382 return; | |
4383 } | |
1865
1c352af0135d
6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
acorn
parents:
1681
diff
changeset
|
4384 else if (time == 0 && !isAbsolute) { |
0 | 4385 time = INFINITE; |
4386 } | |
4387 else if (isAbsolute) { | |
4388 time -= os::javaTimeMillis(); // convert to relative time | |
4389 if (time <= 0) // already elapsed | |
4390 return; | |
4391 } | |
4392 else { // relative | |
4393 time /= 1000000; // Must coarsen from nanos to millis | |
4394 if (time == 0) // Wait for the minimal time unit if zero | |
4395 time = 1; | |
4396 } | |
4397 | |
4398 JavaThread* thread = (JavaThread*)(Thread::current()); | |
4399 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
4400 JavaThread *jt = (JavaThread *)thread; | |
4401 | |
4402 // Don't wait if interrupted or already triggered | |
4403 if (Thread::is_interrupted(thread, false) || | |
4404 WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) { | |
4405 ResetEvent(_ParkEvent); | |
4406 return; | |
4407 } | |
4408 else { | |
4409 ThreadBlockInVM tbivm(jt); | |
4410 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
4411 jt->set_suspend_equivalent(); | |
4412 | |
4413 WaitForSingleObject(_ParkEvent, time); | |
4414 ResetEvent(_ParkEvent); | |
4415 | |
4416 // If externally suspended while waiting, re-suspend | |
4417 if (jt->handle_special_suspend_equivalent_condition()) { | |
4418 jt->java_suspend_self(); | |
4419 } | |
4420 } | |
4421 } | |
4422 | |
4423 void Parker::unpark() { | |
4424 guarantee (_ParkEvent != NULL, "invariant") ; | |
4425 SetEvent(_ParkEvent); | |
4426 } | |
4427 | |
4428 // Run the specified command in a separate process. Return its exit value, | |
4429 // or -1 on failure (e.g. can't create a new process). | |
4430 int os::fork_and_exec(char* cmd) { | |
4431 STARTUPINFO si; | |
4432 PROCESS_INFORMATION pi; | |
4433 | |
4434 memset(&si, 0, sizeof(si)); | |
4435 si.cb = sizeof(si); | |
4436 memset(&pi, 0, sizeof(pi)); | |
4437 BOOL rslt = CreateProcess(NULL, // executable name - use command line | |
4438 cmd, // command line | |
4439 NULL, // process security attribute | |
4440 NULL, // thread security attribute | |
4441 TRUE, // inherits system handles | |
4442 0, // no creation flags | |
4443 NULL, // use parent's environment block | |
4444 NULL, // use parent's starting directory | |
4445 &si, // (in) startup information | |
4446 &pi); // (out) process information | |
4447 | |
4448 if (rslt) { | |
4449 // Wait until child process exits. | |
4450 WaitForSingleObject(pi.hProcess, INFINITE); | |
4451 | |
4452 DWORD exit_code; | |
4453 GetExitCodeProcess(pi.hProcess, &exit_code); | |
4454 | |
4455 // Close process and thread handles. | |
4456 CloseHandle(pi.hProcess); | |
4457 CloseHandle(pi.hThread); | |
4458 | |
4459 return (int)exit_code; | |
4460 } else { | |
4461 return -1; | |
4462 } | |
4463 } | |
4464 | |
4465 //-------------------------------------------------------------------------------------------------- | |
4466 // Non-product code | |
4467 | |
4468 static int mallocDebugIntervalCounter = 0; | |
4469 static int mallocDebugCounter = 0; | |
4470 bool os::check_heap(bool force) { | |
4471 if (++mallocDebugCounter < MallocVerifyStart && !force) return true; | |
4472 if (++mallocDebugIntervalCounter >= MallocVerifyInterval || force) { | |
4473 // Note: HeapValidate executes two hardware breakpoints when it finds something | |
4474 // wrong; at these points, eax contains the address of the offending block (I think). | |
4475 // To get to the exlicit error message(s) below, just continue twice. | |
4476 HANDLE heap = GetProcessHeap(); | |
4477 { HeapLock(heap); | |
4478 PROCESS_HEAP_ENTRY phe; | |
4479 phe.lpData = NULL; | |
4480 while (HeapWalk(heap, &phe) != 0) { | |
4481 if ((phe.wFlags & PROCESS_HEAP_ENTRY_BUSY) && | |
4482 !HeapValidate(heap, 0, phe.lpData)) { | |
4483 tty->print_cr("C heap has been corrupted (time: %d allocations)", mallocDebugCounter); | |
4484 tty->print_cr("corrupted block near address %#x, length %d", phe.lpData, phe.cbData); | |
4485 fatal("corrupted C heap"); | |
4486 } | |
4487 } | |
4488 int err = GetLastError(); | |
4489 if (err != ERROR_NO_MORE_ITEMS && err != ERROR_CALL_NOT_IMPLEMENTED) { | |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1353
diff
changeset
|
4490 fatal(err_msg("heap walk aborted with error %d", err)); |
0 | 4491 } |
4492 HeapUnlock(heap); | |
4493 } | |
4494 mallocDebugIntervalCounter = 0; | |
4495 } | |
4496 return true; | |
4497 } | |
4498 | |
4499 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4500 bool os::find(address addr, outputStream* st) { |
0 | 4501 // Nothing yet |
4502 return false; | |
4503 } | |
4504 | |
4505 LONG WINAPI os::win32::serialize_fault_filter(struct _EXCEPTION_POINTERS* e) { | |
4506 DWORD exception_code = e->ExceptionRecord->ExceptionCode; | |
4507 | |
4508 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
4509 JavaThread* thread = (JavaThread*)ThreadLocalStorage::get_thread_slow(); | |
4510 PEXCEPTION_RECORD exceptionRecord = e->ExceptionRecord; | |
4511 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
4512 | |
4513 if (os::is_memory_serialize_page(thread, addr)) | |
4514 return EXCEPTION_CONTINUE_EXECUTION; | |
4515 } | |
4516 | |
4517 return EXCEPTION_CONTINUE_SEARCH; | |
4518 } | |
4519 | |
4520 static int getLastErrorString(char *buf, size_t len) | |
4521 { | |
4522 long errval; | |
4523 | |
4524 if ((errval = GetLastError()) != 0) | |
4525 { | |
4526 /* DOS error */ | |
4527 size_t n = (size_t)FormatMessage( | |
4528 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, | |
4529 NULL, | |
4530 errval, | |
4531 0, | |
4532 buf, | |
4533 (DWORD)len, | |
4534 NULL); | |
4535 if (n > 3) { | |
4536 /* Drop final '.', CR, LF */ | |
4537 if (buf[n - 1] == '\n') n--; | |
4538 if (buf[n - 1] == '\r') n--; | |
4539 if (buf[n - 1] == '.') n--; | |
4540 buf[n] = '\0'; | |
4541 } | |
4542 return (int)n; | |
4543 } | |
4544 | |
4545 if (errno != 0) | |
4546 { | |
4547 /* C runtime error that has no corresponding DOS error code */ | |
4548 const char *s = strerror(errno); | |
4549 size_t n = strlen(s); | |
4550 if (n >= len) n = len - 1; | |
4551 strncpy(buf, s, n); | |
4552 buf[n] = '\0'; | |
4553 return (int)n; | |
4554 } | |
4555 return 0; | |
4556 } | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4557 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4558 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4559 // We don't build a headless jre for Windows |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4560 bool os::is_headless_jre() { return false; } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4561 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4562 // OS_SocketInterface |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4563 // Not used on Windows |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4564 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4565 // OS_SocketInterface |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4566 typedef struct hostent * (PASCAL FAR *ws2_ifn_ptr_t)(...); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4567 ws2_ifn_ptr_t *get_host_by_name_fn = NULL; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4568 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4569 typedef CRITICAL_SECTION mutex_t; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4570 #define mutexInit(m) InitializeCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4571 #define mutexDestroy(m) DeleteCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4572 #define mutexLock(m) EnterCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4573 #define mutexUnlock(m) LeaveCriticalSection(m) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4574 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4575 static bool sockfnptrs_initialized = FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4576 static mutex_t sockFnTableMutex; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4577 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4578 /* is Winsock2 loaded? better to be explicit than to rely on sockfnptrs */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4579 static bool winsock2Available = FALSE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4580 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4581 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4582 static void initSockFnTable() { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4583 int (PASCAL FAR* WSAStartupPtr)(WORD, LPWSADATA); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4584 WSADATA wsadata; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4585 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4586 ::mutexInit(&sockFnTableMutex); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4587 ::mutexLock(&sockFnTableMutex); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4588 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4589 if (sockfnptrs_initialized == FALSE) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4590 HMODULE hWinsock; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4591 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4592 /* try to load Winsock2, and if that fails, load Winsock */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4593 hWinsock = ::LoadLibrary("ws2_32.dll"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4594 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4595 if (hWinsock == NULL) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4596 jio_fprintf(stderr, "Could not load Winsock 2 (error: %d)\n", |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4597 ::GetLastError()); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4598 return; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4599 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4600 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4601 /* If we loaded a DLL, then we might as well initialize it. */ |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4602 WSAStartupPtr = (int (PASCAL FAR *)(WORD, LPWSADATA)) |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4603 ::GetProcAddress(hWinsock, "WSAStartup"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4604 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4605 if (WSAStartupPtr(MAKEWORD(1,1), &wsadata) != 0) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4606 jio_fprintf(stderr, "Could not initialize Winsock\n"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4607 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4608 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4609 get_host_by_name_fn |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4610 = (ws2_ifn_ptr_t*) GetProcAddress(hWinsock, "gethostbyname"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4611 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4612 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4613 assert(get_host_by_name_fn != NULL, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4614 "gethostbyname function not found"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4615 sockfnptrs_initialized = TRUE; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4616 ::mutexUnlock(&sockFnTableMutex); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4617 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4618 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4619 struct hostent* os::get_host_by_name(char* name) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4620 if (!sockfnptrs_initialized) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4621 initSockFnTable(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4622 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4623 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4624 assert(sockfnptrs_initialized == TRUE && get_host_by_name_fn != NULL, |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4625 "sockfnptrs is not initialized or pointer to gethostbyname function is NULL"); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4626 return (*get_host_by_name_fn)(name); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4627 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4628 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4629 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4630 int os::socket_close(int fd) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4631 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4632 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4633 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4634 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4635 int os::socket_available(int fd, jint *pbytes) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4636 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4637 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4638 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4639 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4640 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
|
4641 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4642 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4643 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4644 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4645 int os::listen(int fd, int count) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4646 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4647 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4648 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4649 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4650 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
|
4651 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4652 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4653 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4654 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4655 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
|
4656 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4657 return 0; |
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 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4660 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
|
4661 struct sockaddr *to, int tolen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4662 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4663 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4664 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4665 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4666 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
|
4667 sockaddr *from, int *fromlen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4668 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4669 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4670 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4671 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4672 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
|
4673 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4674 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4675 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4676 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4677 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
|
4678 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4679 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4680 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4681 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4682 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
|
4683 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4684 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4685 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4686 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4687 int os::timeout(int fd, long timeout) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4688 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4689 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4690 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4691 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4692 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
|
4693 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4694 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4695 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4696 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4697 int os::socket_shutdown(int fd, int howto) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4698 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4699 return 0; |
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 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4702 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
|
4703 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4704 return 0; |
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 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4707 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
|
4708 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4709 return 0; |
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 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4712 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
|
4713 char *optval, int* optlen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4714 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4715 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4716 } |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4717 |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4718 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
|
4719 const char *optval, int optlen) { |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4720 ShouldNotReachHere(); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4721 return 0; |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4722 } |