Mercurial > hg > graal-compiler
annotate src/os/windows/vm/os_windows.cpp @ 2204:63d374c54045
7014918: Improve core/minidump handling in Hotspot
Summary: Added Minidump support on Windows, enabled large page core dumps when coredump_filter is present and writing out path/rlimit for core dumps.
Reviewed-by: poonam, dsamersoff, sla, coleenp
| author | ctornqvi |
|---|---|
| date | Wed, 09 Feb 2011 11:08:10 +0100 |
| parents | 34d64ad817f4 |
| children | b83527d0482d |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 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" | |
|
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65 #include "utilities/decoder.hpp" |
| 1972 | 66 #include "utilities/defaultStream.hpp" |
| 67 #include "utilities/events.hpp" | |
| 68 #include "utilities/growableArray.hpp" | |
| 69 #include "utilities/vmError.hpp" | |
| 70 #ifdef TARGET_ARCH_x86 | |
| 71 # include "assembler_x86.inline.hpp" | |
| 72 # include "nativeInst_x86.hpp" | |
| 73 #endif | |
| 74 #ifdef COMPILER1 | |
| 75 #include "c1/c1_Runtime1.hpp" | |
| 76 #endif | |
| 77 #ifdef COMPILER2 | |
| 78 #include "opto/runtime.hpp" | |
| 79 #endif | |
| 0 | 80 |
| 81 #ifdef _DEBUG | |
| 82 #include <crtdbg.h> | |
| 83 #endif | |
| 84 | |
| 85 | |
| 86 #include <windows.h> | |
| 87 #include <sys/types.h> | |
| 88 #include <sys/stat.h> | |
| 89 #include <sys/timeb.h> | |
| 90 #include <objidl.h> | |
| 91 #include <shlobj.h> | |
| 92 | |
| 93 #include <malloc.h> | |
| 94 #include <signal.h> | |
| 95 #include <direct.h> | |
| 96 #include <errno.h> | |
| 97 #include <fcntl.h> | |
| 98 #include <io.h> | |
| 99 #include <process.h> // For _beginthreadex(), _endthreadex() | |
| 100 #include <imagehlp.h> // For os::dll_address_to_function_name | |
| 101 | |
| 102 /* for enumerating dll libraries */ | |
| 103 #include <tlhelp32.h> | |
| 104 #include <vdmdbg.h> | |
| 105 | |
| 106 // for timer info max values which include all bits | |
| 107 #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) | |
| 108 | |
| 109 // For DLL loading/load error detection | |
| 110 // Values of PE COFF | |
| 111 #define IMAGE_FILE_PTR_TO_SIGNATURE 0x3c | |
| 112 #define IMAGE_FILE_SIGNATURE_LENGTH 4 | |
| 113 | |
| 114 static HANDLE main_process; | |
| 115 static HANDLE main_thread; | |
| 116 static int main_thread_id; | |
| 117 | |
| 118 static FILETIME process_creation_time; | |
| 119 static FILETIME process_exit_time; | |
| 120 static FILETIME process_user_time; | |
| 121 static FILETIME process_kernel_time; | |
| 122 | |
| 123 #ifdef _WIN64 | |
| 124 PVOID topLevelVectoredExceptionHandler = NULL; | |
| 125 #endif | |
| 126 | |
| 127 #ifdef _M_IA64 | |
| 128 #define __CPU__ ia64 | |
| 129 #elif _M_AMD64 | |
| 130 #define __CPU__ amd64 | |
| 131 #else | |
| 132 #define __CPU__ i486 | |
| 133 #endif | |
| 134 | |
| 135 // save DLL module handle, used by GetModuleFileName | |
| 136 | |
| 137 HINSTANCE vm_lib_handle; | |
| 138 static int getLastErrorString(char *buf, size_t len); | |
| 139 | |
| 140 BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) { | |
| 141 switch (reason) { | |
| 142 case DLL_PROCESS_ATTACH: | |
| 143 vm_lib_handle = hinst; | |
| 144 if(ForceTimeHighResolution) | |
| 145 timeBeginPeriod(1L); | |
| 146 break; | |
| 147 case DLL_PROCESS_DETACH: | |
| 148 if(ForceTimeHighResolution) | |
| 149 timeEndPeriod(1L); | |
| 150 #ifdef _WIN64 | |
| 151 if (topLevelVectoredExceptionHandler != NULL) { | |
| 152 RemoveVectoredExceptionHandler(topLevelVectoredExceptionHandler); | |
| 153 topLevelVectoredExceptionHandler = NULL; | |
| 154 } | |
| 155 #endif | |
| 156 break; | |
| 157 default: | |
| 158 break; | |
| 159 } | |
| 160 return true; | |
| 161 } | |
| 162 | |
| 163 static inline double fileTimeAsDouble(FILETIME* time) { | |
| 164 const double high = (double) ((unsigned int) ~0); | |
| 165 const double split = 10000000.0; | |
| 166 double result = (time->dwLowDateTime / split) + | |
| 167 time->dwHighDateTime * (high/split); | |
| 168 return result; | |
| 169 } | |
| 170 | |
| 171 // Implementation of os | |
| 172 | |
| 173 bool os::getenv(const char* name, char* buffer, int len) { | |
| 174 int result = GetEnvironmentVariable(name, buffer, len); | |
| 175 return result > 0 && result < len; | |
| 176 } | |
| 177 | |
| 178 | |
| 179 // No setuid programs under Windows. | |
| 180 bool os::have_special_privileges() { | |
| 181 return false; | |
| 182 } | |
| 183 | |
| 184 | |
| 185 // This method is a periodic task to check for misbehaving JNI applications | |
| 186 // under CheckJNI, we can add any periodic checks here. | |
| 187 // For Windows at the moment does nothing | |
| 188 void os::run_periodic_checks() { | |
| 189 return; | |
| 190 } | |
| 191 | |
| 192 #ifndef _WIN64 | |
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193 // previous UnhandledExceptionFilter, if there is one |
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194 static LPTOP_LEVEL_EXCEPTION_FILTER prev_uef_handler = NULL; |
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195 |
| 0 | 196 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo); |
| 197 #endif | |
| 198 void os::init_system_properties_values() { | |
| 199 /* sysclasspath, java_home, dll_dir */ | |
| 200 { | |
| 201 char *home_path; | |
| 202 char *dll_path; | |
| 203 char *pslash; | |
| 204 char *bin = "\\bin"; | |
| 205 char home_dir[MAX_PATH]; | |
| 206 | |
| 207 if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) { | |
| 208 os::jvm_path(home_dir, sizeof(home_dir)); | |
| 209 // Found the full path to jvm[_g].dll. | |
| 210 // Now cut the path to <java_home>/jre if we can. | |
| 211 *(strrchr(home_dir, '\\')) = '\0'; /* get rid of \jvm.dll */ | |
| 212 pslash = strrchr(home_dir, '\\'); | |
| 213 if (pslash != NULL) { | |
| 214 *pslash = '\0'; /* get rid of \{client|server} */ | |
| 215 pslash = strrchr(home_dir, '\\'); | |
| 216 if (pslash != NULL) | |
| 217 *pslash = '\0'; /* get rid of \bin */ | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1); | |
| 222 if (home_path == NULL) | |
| 223 return; | |
| 224 strcpy(home_path, home_dir); | |
| 225 Arguments::set_java_home(home_path); | |
| 226 | |
| 227 dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1); | |
| 228 if (dll_path == NULL) | |
| 229 return; | |
| 230 strcpy(dll_path, home_dir); | |
| 231 strcat(dll_path, bin); | |
| 232 Arguments::set_dll_dir(dll_path); | |
| 233 | |
| 234 if (!set_boot_path('\\', ';')) | |
| 235 return; | |
| 236 } | |
| 237 | |
| 238 /* library_path */ | |
| 239 #define EXT_DIR "\\lib\\ext" | |
| 240 #define BIN_DIR "\\bin" | |
| 241 #define PACKAGE_DIR "\\Sun\\Java" | |
| 242 { | |
| 243 /* Win32 library search order (See the documentation for LoadLibrary): | |
| 244 * | |
| 245 * 1. The directory from which application is loaded. | |
| 246 * 2. The current directory | |
| 247 * 3. The system wide Java Extensions directory (Java only) | |
| 248 * 4. System directory (GetSystemDirectory) | |
| 249 * 5. Windows directory (GetWindowsDirectory) | |
| 250 * 6. The PATH environment variable | |
| 251 */ | |
| 252 | |
| 253 char *library_path; | |
| 254 char tmp[MAX_PATH]; | |
| 255 char *path_str = ::getenv("PATH"); | |
| 256 | |
| 257 library_path = NEW_C_HEAP_ARRAY(char, MAX_PATH * 5 + sizeof(PACKAGE_DIR) + | |
| 258 sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10); | |
| 259 | |
| 260 library_path[0] = '\0'; | |
| 261 | |
| 262 GetModuleFileName(NULL, tmp, sizeof(tmp)); | |
| 263 *(strrchr(tmp, '\\')) = '\0'; | |
| 264 strcat(library_path, tmp); | |
| 265 | |
| 266 strcat(library_path, ";."); | |
| 267 | |
| 268 GetWindowsDirectory(tmp, sizeof(tmp)); | |
| 269 strcat(library_path, ";"); | |
| 270 strcat(library_path, tmp); | |
| 271 strcat(library_path, PACKAGE_DIR BIN_DIR); | |
| 272 | |
| 273 GetSystemDirectory(tmp, sizeof(tmp)); | |
| 274 strcat(library_path, ";"); | |
| 275 strcat(library_path, tmp); | |
| 276 | |
| 277 GetWindowsDirectory(tmp, sizeof(tmp)); | |
| 278 strcat(library_path, ";"); | |
| 279 strcat(library_path, tmp); | |
| 280 | |
| 281 if (path_str) { | |
| 282 strcat(library_path, ";"); | |
| 283 strcat(library_path, path_str); | |
| 284 } | |
| 285 | |
| 286 Arguments::set_library_path(library_path); | |
| 287 FREE_C_HEAP_ARRAY(char, library_path); | |
| 288 } | |
| 289 | |
| 290 /* Default extensions directory */ | |
| 291 { | |
| 292 char path[MAX_PATH]; | |
| 293 char buf[2 * MAX_PATH + 2 * sizeof(EXT_DIR) + sizeof(PACKAGE_DIR) + 1]; | |
| 294 GetWindowsDirectory(path, MAX_PATH); | |
| 295 sprintf(buf, "%s%s;%s%s%s", Arguments::get_java_home(), EXT_DIR, | |
| 296 path, PACKAGE_DIR, EXT_DIR); | |
| 297 Arguments::set_ext_dirs(buf); | |
| 298 } | |
| 299 #undef EXT_DIR | |
| 300 #undef BIN_DIR | |
| 301 #undef PACKAGE_DIR | |
| 302 | |
| 303 /* Default endorsed standards directory. */ | |
| 304 { | |
| 305 #define ENDORSED_DIR "\\lib\\endorsed" | |
| 306 size_t len = strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR); | |
| 307 char * buf = NEW_C_HEAP_ARRAY(char, len); | |
| 308 sprintf(buf, "%s%s", Arguments::get_java_home(), ENDORSED_DIR); | |
| 309 Arguments::set_endorsed_dirs(buf); | |
| 310 #undef ENDORSED_DIR | |
| 311 } | |
| 312 | |
| 313 #ifndef _WIN64 | |
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314 // set our UnhandledExceptionFilter and save any previous one |
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315 prev_uef_handler = SetUnhandledExceptionFilter(Handle_FLT_Exception); |
| 0 | 316 #endif |
| 317 | |
| 318 // Done | |
| 319 return; | |
| 320 } | |
| 321 | |
| 322 void os::breakpoint() { | |
| 323 DebugBreak(); | |
| 324 } | |
| 325 | |
| 326 // Invoked from the BREAKPOINT Macro | |
| 327 extern "C" void breakpoint() { | |
| 328 os::breakpoint(); | |
| 329 } | |
| 330 | |
| 331 // Returns an estimate of the current stack pointer. Result must be guaranteed | |
| 332 // to point into the calling threads stack, and be no lower than the current | |
| 333 // stack pointer. | |
| 334 | |
| 335 address os::current_stack_pointer() { | |
| 336 int dummy; | |
| 337 address sp = (address)&dummy; | |
| 338 return sp; | |
| 339 } | |
| 340 | |
| 341 // os::current_stack_base() | |
| 342 // | |
| 343 // Returns the base of the stack, which is the stack's | |
| 344 // starting address. This function must be called | |
| 345 // while running on the stack of the thread being queried. | |
| 346 | |
| 347 address os::current_stack_base() { | |
| 348 MEMORY_BASIC_INFORMATION minfo; | |
| 349 address stack_bottom; | |
| 350 size_t stack_size; | |
| 351 | |
| 352 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
| 353 stack_bottom = (address)minfo.AllocationBase; | |
| 354 stack_size = minfo.RegionSize; | |
| 355 | |
| 356 // Add up the sizes of all the regions with the same | |
| 357 // AllocationBase. | |
| 358 while( 1 ) | |
| 359 { | |
| 360 VirtualQuery(stack_bottom+stack_size, &minfo, sizeof(minfo)); | |
| 361 if ( stack_bottom == (address)minfo.AllocationBase ) | |
| 362 stack_size += minfo.RegionSize; | |
| 363 else | |
| 364 break; | |
| 365 } | |
| 366 | |
| 367 #ifdef _M_IA64 | |
| 368 // IA64 has memory and register stacks | |
| 369 stack_size = stack_size / 2; | |
| 370 #endif | |
| 371 return stack_bottom + stack_size; | |
| 372 } | |
| 373 | |
| 374 size_t os::current_stack_size() { | |
| 375 size_t sz; | |
| 376 MEMORY_BASIC_INFORMATION minfo; | |
| 377 VirtualQuery(&minfo, &minfo, sizeof(minfo)); | |
| 378 sz = (size_t)os::current_stack_base() - (size_t)minfo.AllocationBase; | |
| 379 return sz; | |
| 380 } | |
| 381 | |
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382 struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
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383 const struct tm* time_struct_ptr = localtime(clock); |
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384 if (time_struct_ptr != NULL) { |
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385 *res = *time_struct_ptr; |
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386 return res; |
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387 } |
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388 return NULL; |
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389 } |
| 0 | 390 |
| 391 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo); | |
| 392 | |
| 393 // Thread start routine for all new Java threads | |
| 394 static unsigned __stdcall java_start(Thread* thread) { | |
| 395 // Try to randomize the cache line index of hot stack frames. | |
| 396 // This helps when threads of the same stack traces evict each other's | |
| 397 // cache lines. The threads can be either from the same JVM instance, or | |
| 398 // from different JVM instances. The benefit is especially true for | |
| 399 // processors with hyperthreading technology. | |
| 400 static int counter = 0; | |
| 401 int pid = os::current_process_id(); | |
| 402 _alloca(((pid ^ counter++) & 7) * 128); | |
| 403 | |
| 404 OSThread* osthr = thread->osthread(); | |
| 405 assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); | |
| 406 | |
| 407 if (UseNUMA) { | |
| 408 int lgrp_id = os::numa_get_group_id(); | |
| 409 if (lgrp_id != -1) { | |
| 410 thread->set_lgrp_id(lgrp_id); | |
| 411 } | |
| 412 } | |
| 413 | |
| 414 | |
| 415 if (UseVectoredExceptions) { | |
| 416 // If we are using vectored exception we don't need to set a SEH | |
| 417 thread->run(); | |
| 418 } | |
| 419 else { | |
| 420 // Install a win32 structured exception handler around every thread created | |
| 421 // by VM, so VM can genrate error dump when an exception occurred in non- | |
| 422 // Java thread (e.g. VM thread). | |
| 423 __try { | |
| 424 thread->run(); | |
| 425 } __except(topLevelExceptionFilter( | |
| 426 (_EXCEPTION_POINTERS*)_exception_info())) { | |
| 427 // Nothing to do. | |
| 428 } | |
| 429 } | |
| 430 | |
| 431 // One less thread is executing | |
| 432 // When the VMThread gets here, the main thread may have already exited | |
| 433 // which frees the CodeHeap containing the Atomic::add code | |
| 434 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { | |
| 435 Atomic::dec_ptr((intptr_t*)&os::win32::_os_thread_count); | |
| 436 } | |
| 437 | |
| 438 return 0; | |
| 439 } | |
| 440 | |
| 441 static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle, int thread_id) { | |
| 442 // Allocate the OSThread object | |
| 443 OSThread* osthread = new OSThread(NULL, NULL); | |
| 444 if (osthread == NULL) return NULL; | |
| 445 | |
| 446 // Initialize support for Java interrupts | |
| 447 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
| 448 if (interrupt_event == NULL) { | |
| 449 delete osthread; | |
| 450 return NULL; | |
| 451 } | |
| 452 osthread->set_interrupt_event(interrupt_event); | |
| 453 | |
| 454 // Store info on the Win32 thread into the OSThread | |
| 455 osthread->set_thread_handle(thread_handle); | |
| 456 osthread->set_thread_id(thread_id); | |
| 457 | |
| 458 if (UseNUMA) { | |
| 459 int lgrp_id = os::numa_get_group_id(); | |
| 460 if (lgrp_id != -1) { | |
| 461 thread->set_lgrp_id(lgrp_id); | |
| 462 } | |
| 463 } | |
| 464 | |
| 465 // Initial thread state is INITIALIZED, not SUSPENDED | |
| 466 osthread->set_state(INITIALIZED); | |
| 467 | |
| 468 return osthread; | |
| 469 } | |
| 470 | |
| 471 | |
| 472 bool os::create_attached_thread(JavaThread* thread) { | |
| 473 #ifdef ASSERT | |
| 474 thread->verify_not_published(); | |
| 475 #endif | |
| 476 HANDLE thread_h; | |
| 477 if (!DuplicateHandle(main_process, GetCurrentThread(), GetCurrentProcess(), | |
| 478 &thread_h, THREAD_ALL_ACCESS, false, 0)) { | |
| 479 fatal("DuplicateHandle failed\n"); | |
| 480 } | |
| 481 OSThread* osthread = create_os_thread(thread, thread_h, | |
| 482 (int)current_thread_id()); | |
| 483 if (osthread == NULL) { | |
| 484 return false; | |
| 485 } | |
| 486 | |
| 487 // Initial thread state is RUNNABLE | |
| 488 osthread->set_state(RUNNABLE); | |
| 489 | |
| 490 thread->set_osthread(osthread); | |
| 491 return true; | |
| 492 } | |
| 493 | |
| 494 bool os::create_main_thread(JavaThread* thread) { | |
| 495 #ifdef ASSERT | |
| 496 thread->verify_not_published(); | |
| 497 #endif | |
| 498 if (_starting_thread == NULL) { | |
| 499 _starting_thread = create_os_thread(thread, main_thread, main_thread_id); | |
| 500 if (_starting_thread == NULL) { | |
| 501 return false; | |
| 502 } | |
| 503 } | |
| 504 | |
| 505 // The primordial thread is runnable from the start) | |
| 506 _starting_thread->set_state(RUNNABLE); | |
| 507 | |
| 508 thread->set_osthread(_starting_thread); | |
| 509 return true; | |
| 510 } | |
| 511 | |
| 512 // Allocate and initialize a new OSThread | |
| 513 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { | |
| 514 unsigned thread_id; | |
| 515 | |
| 516 // Allocate the OSThread object | |
| 517 OSThread* osthread = new OSThread(NULL, NULL); | |
| 518 if (osthread == NULL) { | |
| 519 return false; | |
| 520 } | |
| 521 | |
| 522 // Initialize support for Java interrupts | |
| 523 HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL); | |
| 524 if (interrupt_event == NULL) { | |
| 525 delete osthread; | |
| 526 return NULL; | |
| 527 } | |
| 528 osthread->set_interrupt_event(interrupt_event); | |
| 529 osthread->set_interrupted(false); | |
| 530 | |
| 531 thread->set_osthread(osthread); | |
| 532 | |
| 533 if (stack_size == 0) { | |
| 534 switch (thr_type) { | |
| 535 case os::java_thread: | |
| 536 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss | |
| 537 if (JavaThread::stack_size_at_create() > 0) | |
| 538 stack_size = JavaThread::stack_size_at_create(); | |
| 539 break; | |
| 540 case os::compiler_thread: | |
| 541 if (CompilerThreadStackSize > 0) { | |
| 542 stack_size = (size_t)(CompilerThreadStackSize * K); | |
| 543 break; | |
| 544 } // else fall through: | |
| 545 // use VMThreadStackSize if CompilerThreadStackSize is not defined | |
| 546 case os::vm_thread: | |
| 547 case os::pgc_thread: | |
| 548 case os::cgc_thread: | |
| 549 case os::watcher_thread: | |
| 550 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); | |
| 551 break; | |
| 552 } | |
| 553 } | |
| 554 | |
| 555 // Create the Win32 thread | |
| 556 // | |
| 557 // Contrary to what MSDN document says, "stack_size" in _beginthreadex() | |
| 558 // does not specify stack size. Instead, it specifies the size of | |
| 559 // initially committed space. The stack size is determined by | |
| 560 // PE header in the executable. If the committed "stack_size" is larger | |
| 561 // than default value in the PE header, the stack is rounded up to the | |
| 562 // nearest multiple of 1MB. For example if the launcher has default | |
| 563 // stack size of 320k, specifying any size less than 320k does not | |
| 564 // affect the actual stack size at all, it only affects the initial | |
| 565 // commitment. On the other hand, specifying 'stack_size' larger than | |
| 566 // default value may cause significant increase in memory usage, because | |
| 567 // not only the stack space will be rounded up to MB, but also the | |
| 568 // entire space is committed upfront. | |
| 569 // | |
| 570 // Finally Windows XP added a new flag 'STACK_SIZE_PARAM_IS_A_RESERVATION' | |
| 571 // for CreateThread() that can treat 'stack_size' as stack size. However we | |
| 572 // are not supposed to call CreateThread() directly according to MSDN | |
| 573 // document because JVM uses C runtime library. The good news is that the | |
| 574 // flag appears to work with _beginthredex() as well. | |
| 575 | |
| 576 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION | |
| 577 #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000) | |
| 578 #endif | |
| 579 | |
| 580 HANDLE thread_handle = | |
| 581 (HANDLE)_beginthreadex(NULL, | |
| 582 (unsigned)stack_size, | |
| 583 (unsigned (__stdcall *)(void*)) java_start, | |
| 584 thread, | |
| 585 CREATE_SUSPENDED | STACK_SIZE_PARAM_IS_A_RESERVATION, | |
| 586 &thread_id); | |
| 587 if (thread_handle == NULL) { | |
| 588 // perhaps STACK_SIZE_PARAM_IS_A_RESERVATION is not supported, try again | |
| 589 // without the flag. | |
| 590 thread_handle = | |
| 591 (HANDLE)_beginthreadex(NULL, | |
| 592 (unsigned)stack_size, | |
| 593 (unsigned (__stdcall *)(void*)) java_start, | |
| 594 thread, | |
| 595 CREATE_SUSPENDED, | |
| 596 &thread_id); | |
| 597 } | |
| 598 if (thread_handle == NULL) { | |
| 599 // Need to clean up stuff we've allocated so far | |
| 600 CloseHandle(osthread->interrupt_event()); | |
| 601 thread->set_osthread(NULL); | |
| 602 delete osthread; | |
| 603 return NULL; | |
| 604 } | |
| 605 | |
| 606 Atomic::inc_ptr((intptr_t*)&os::win32::_os_thread_count); | |
| 607 | |
| 608 // Store info on the Win32 thread into the OSThread | |
| 609 osthread->set_thread_handle(thread_handle); | |
| 610 osthread->set_thread_id(thread_id); | |
| 611 | |
| 612 // Initial thread state is INITIALIZED, not SUSPENDED | |
| 613 osthread->set_state(INITIALIZED); | |
| 614 | |
| 615 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain | |
| 616 return true; | |
| 617 } | |
| 618 | |
| 619 | |
| 620 // Free Win32 resources related to the OSThread | |
| 621 void os::free_thread(OSThread* osthread) { | |
| 622 assert(osthread != NULL, "osthread not set"); | |
| 623 CloseHandle(osthread->thread_handle()); | |
| 624 CloseHandle(osthread->interrupt_event()); | |
| 625 delete osthread; | |
| 626 } | |
| 627 | |
| 628 | |
| 629 static int has_performance_count = 0; | |
| 630 static jlong first_filetime; | |
| 631 static jlong initial_performance_count; | |
| 632 static jlong performance_frequency; | |
| 633 | |
| 634 | |
| 635 jlong as_long(LARGE_INTEGER x) { | |
| 636 jlong result = 0; // initialization to avoid warning | |
| 637 set_high(&result, x.HighPart); | |
| 638 set_low(&result, x.LowPart); | |
| 639 return result; | |
| 640 } | |
| 641 | |
| 642 | |
| 643 jlong os::elapsed_counter() { | |
| 644 LARGE_INTEGER count; | |
| 645 if (has_performance_count) { | |
| 646 QueryPerformanceCounter(&count); | |
| 647 return as_long(count) - initial_performance_count; | |
| 648 } else { | |
| 649 FILETIME wt; | |
| 650 GetSystemTimeAsFileTime(&wt); | |
| 651 return (jlong_from(wt.dwHighDateTime, wt.dwLowDateTime) - first_filetime); | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 | |
| 656 jlong os::elapsed_frequency() { | |
| 657 if (has_performance_count) { | |
| 658 return performance_frequency; | |
| 659 } else { | |
| 660 // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601. | |
| 661 return 10000000; | |
| 662 } | |
| 663 } | |
| 664 | |
| 665 | |
| 666 julong os::available_memory() { | |
| 667 return win32::available_memory(); | |
| 668 } | |
| 669 | |
| 670 julong os::win32::available_memory() { | |
|
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671 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
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672 // value if total memory is larger than 4GB |
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673 MEMORYSTATUSEX ms; |
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674 ms.dwLength = sizeof(ms); |
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675 GlobalMemoryStatusEx(&ms); |
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676 |
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677 return (julong)ms.ullAvailPhys; |
| 0 | 678 } |
| 679 | |
| 680 julong os::physical_memory() { | |
| 681 return win32::physical_memory(); | |
| 682 } | |
| 683 | |
| 684 julong os::allocatable_physical_memory(julong size) { | |
|
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685 #ifdef _LP64 |
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686 return size; |
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687 #else |
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688 // Limit to 1400m because of the 2gb address space wall |
| 0 | 689 return MIN2(size, (julong)1400*M); |
|
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690 #endif |
| 0 | 691 } |
| 692 | |
| 693 // VC6 lacks DWORD_PTR | |
| 694 #if _MSC_VER < 1300 | |
| 695 typedef UINT_PTR DWORD_PTR; | |
| 696 #endif | |
| 697 | |
| 698 int os::active_processor_count() { | |
| 699 DWORD_PTR lpProcessAffinityMask = 0; | |
| 700 DWORD_PTR lpSystemAffinityMask = 0; | |
| 701 int proc_count = processor_count(); | |
| 702 if (proc_count <= sizeof(UINT_PTR) * BitsPerByte && | |
| 703 GetProcessAffinityMask(GetCurrentProcess(), &lpProcessAffinityMask, &lpSystemAffinityMask)) { | |
| 704 // Nof active processors is number of bits in process affinity mask | |
| 705 int bitcount = 0; | |
| 706 while (lpProcessAffinityMask != 0) { | |
| 707 lpProcessAffinityMask = lpProcessAffinityMask & (lpProcessAffinityMask-1); | |
| 708 bitcount++; | |
| 709 } | |
| 710 return bitcount; | |
| 711 } else { | |
| 712 return proc_count; | |
| 713 } | |
| 714 } | |
| 715 | |
| 716 bool os::distribute_processes(uint length, uint* distribution) { | |
| 717 // Not yet implemented. | |
| 718 return false; | |
| 719 } | |
| 720 | |
| 721 bool os::bind_to_processor(uint processor_id) { | |
| 722 // Not yet implemented. | |
| 723 return false; | |
| 724 } | |
| 725 | |
| 726 static void initialize_performance_counter() { | |
| 727 LARGE_INTEGER count; | |
| 728 if (QueryPerformanceFrequency(&count)) { | |
| 729 has_performance_count = 1; | |
| 730 performance_frequency = as_long(count); | |
| 731 QueryPerformanceCounter(&count); | |
| 732 initial_performance_count = as_long(count); | |
| 733 } else { | |
| 734 has_performance_count = 0; | |
| 735 FILETIME wt; | |
| 736 GetSystemTimeAsFileTime(&wt); | |
| 737 first_filetime = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
| 738 } | |
| 739 } | |
| 740 | |
| 741 | |
| 742 double os::elapsedTime() { | |
| 743 return (double) elapsed_counter() / (double) elapsed_frequency(); | |
| 744 } | |
| 745 | |
| 746 | |
| 747 // Windows format: | |
| 748 // The FILETIME structure is a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601. | |
| 749 // Java format: | |
| 750 // Java standards require the number of milliseconds since 1/1/1970 | |
| 751 | |
| 752 // Constant offset - calculated using offset() | |
| 753 static jlong _offset = 116444736000000000; | |
| 754 // Fake time counter for reproducible results when debugging | |
| 755 static jlong fake_time = 0; | |
| 756 | |
| 757 #ifdef ASSERT | |
| 758 // Just to be safe, recalculate the offset in debug mode | |
| 759 static jlong _calculated_offset = 0; | |
| 760 static int _has_calculated_offset = 0; | |
| 761 | |
| 762 jlong offset() { | |
| 763 if (_has_calculated_offset) return _calculated_offset; | |
| 764 SYSTEMTIME java_origin; | |
| 765 java_origin.wYear = 1970; | |
| 766 java_origin.wMonth = 1; | |
| 767 java_origin.wDayOfWeek = 0; // ignored | |
| 768 java_origin.wDay = 1; | |
| 769 java_origin.wHour = 0; | |
| 770 java_origin.wMinute = 0; | |
| 771 java_origin.wSecond = 0; | |
| 772 java_origin.wMilliseconds = 0; | |
| 773 FILETIME jot; | |
| 774 if (!SystemTimeToFileTime(&java_origin, &jot)) { | |
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775 fatal(err_msg("Error = %d\nWindows error", GetLastError())); |
| 0 | 776 } |
| 777 _calculated_offset = jlong_from(jot.dwHighDateTime, jot.dwLowDateTime); | |
| 778 _has_calculated_offset = 1; | |
| 779 assert(_calculated_offset == _offset, "Calculated and constant time offsets must be equal"); | |
| 780 return _calculated_offset; | |
| 781 } | |
| 782 #else | |
| 783 jlong offset() { | |
| 784 return _offset; | |
| 785 } | |
| 786 #endif | |
| 787 | |
| 788 jlong windows_to_java_time(FILETIME wt) { | |
| 789 jlong a = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime); | |
| 790 return (a - offset()) / 10000; | |
| 791 } | |
| 792 | |
| 793 FILETIME java_to_windows_time(jlong l) { | |
| 794 jlong a = (l * 10000) + offset(); | |
| 795 FILETIME result; | |
| 796 result.dwHighDateTime = high(a); | |
| 797 result.dwLowDateTime = low(a); | |
| 798 return result; | |
| 799 } | |
| 800 | |
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801 // For now, we say that Windows does not support vtime. I have no idea |
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802 // whether it can actually be made to (DLD, 9/13/05). |
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803 |
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804 bool os::supports_vtime() { return false; } |
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805 bool os::enable_vtime() { return false; } |
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806 bool os::vtime_enabled() { return false; } |
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807 double os::elapsedVTime() { |
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808 // better than nothing, but not much |
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809 return elapsedTime(); |
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810 } |
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811 |
| 0 | 812 jlong os::javaTimeMillis() { |
| 813 if (UseFakeTimers) { | |
| 814 return fake_time++; | |
| 815 } else { | |
| 61 | 816 FILETIME wt; |
| 817 GetSystemTimeAsFileTime(&wt); | |
| 818 return windows_to_java_time(wt); | |
| 0 | 819 } |
| 820 } | |
| 821 | |
| 822 #define NANOS_PER_SEC CONST64(1000000000) | |
| 823 #define NANOS_PER_MILLISEC 1000000 | |
| 824 jlong os::javaTimeNanos() { | |
| 825 if (!has_performance_count) { | |
| 826 return javaTimeMillis() * NANOS_PER_MILLISEC; // the best we can do. | |
| 827 } else { | |
| 828 LARGE_INTEGER current_count; | |
| 829 QueryPerformanceCounter(¤t_count); | |
| 830 double current = as_long(current_count); | |
| 831 double freq = performance_frequency; | |
| 832 jlong time = (jlong)((current/freq) * NANOS_PER_SEC); | |
| 833 return time; | |
| 834 } | |
| 835 } | |
| 836 | |
| 837 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { | |
| 838 if (!has_performance_count) { | |
| 839 // javaTimeMillis() doesn't have much percision, | |
| 840 // but it is not going to wrap -- so all 64 bits | |
| 841 info_ptr->max_value = ALL_64_BITS; | |
| 842 | |
| 843 // this is a wall clock timer, so may skip | |
| 844 info_ptr->may_skip_backward = true; | |
| 845 info_ptr->may_skip_forward = true; | |
| 846 } else { | |
| 847 jlong freq = performance_frequency; | |
| 848 if (freq < NANOS_PER_SEC) { | |
| 849 // the performance counter is 64 bits and we will | |
| 850 // be multiplying it -- so no wrap in 64 bits | |
| 851 info_ptr->max_value = ALL_64_BITS; | |
| 852 } else if (freq > NANOS_PER_SEC) { | |
| 853 // use the max value the counter can reach to | |
| 854 // determine the max value which could be returned | |
| 855 julong max_counter = (julong)ALL_64_BITS; | |
| 856 info_ptr->max_value = (jlong)(max_counter / (freq / NANOS_PER_SEC)); | |
| 857 } else { | |
| 858 // the performance counter is 64 bits and we will | |
| 859 // be using it directly -- so no wrap in 64 bits | |
| 860 info_ptr->max_value = ALL_64_BITS; | |
| 861 } | |
| 862 | |
| 863 // using a counter, so no skipping | |
| 864 info_ptr->may_skip_backward = false; | |
| 865 info_ptr->may_skip_forward = false; | |
| 866 } | |
| 867 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time | |
| 868 } | |
| 869 | |
| 870 char* os::local_time_string(char *buf, size_t buflen) { | |
| 871 SYSTEMTIME st; | |
| 872 GetLocalTime(&st); | |
| 873 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", | |
| 874 st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond); | |
| 875 return buf; | |
| 876 } | |
| 877 | |
| 878 bool os::getTimesSecs(double* process_real_time, | |
| 879 double* process_user_time, | |
| 880 double* process_system_time) { | |
| 881 HANDLE h_process = GetCurrentProcess(); | |
| 882 FILETIME create_time, exit_time, kernel_time, user_time; | |
| 883 BOOL result = GetProcessTimes(h_process, | |
| 884 &create_time, | |
| 885 &exit_time, | |
| 886 &kernel_time, | |
| 887 &user_time); | |
| 888 if (result != 0) { | |
| 889 FILETIME wt; | |
| 890 GetSystemTimeAsFileTime(&wt); | |
| 891 jlong rtc_millis = windows_to_java_time(wt); | |
| 892 jlong user_millis = windows_to_java_time(user_time); | |
| 893 jlong system_millis = windows_to_java_time(kernel_time); | |
| 894 *process_real_time = ((double) rtc_millis) / ((double) MILLIUNITS); | |
| 895 *process_user_time = ((double) user_millis) / ((double) MILLIUNITS); | |
| 896 *process_system_time = ((double) system_millis) / ((double) MILLIUNITS); | |
| 897 return true; | |
| 898 } else { | |
| 899 return false; | |
| 900 } | |
| 901 } | |
| 902 | |
| 903 void os::shutdown() { | |
| 904 | |
| 905 // allow PerfMemory to attempt cleanup of any persistent resources | |
| 906 perfMemory_exit(); | |
| 907 | |
| 908 // flush buffered output, finish log files | |
| 909 ostream_abort(); | |
| 910 | |
| 911 // Check for abort hook | |
| 912 abort_hook_t abort_hook = Arguments::abort_hook(); | |
| 913 if (abort_hook != NULL) { | |
| 914 abort_hook(); | |
| 915 } | |
| 916 } | |
| 917 | |
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918 |
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919 static BOOL (WINAPI *_MiniDumpWriteDump) ( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
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920 PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION); |
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921 |
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922 void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) { |
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923 HINSTANCE dbghelp; |
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924 EXCEPTION_POINTERS ep; |
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925 MINIDUMP_EXCEPTION_INFORMATION mei; |
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926 HANDLE hProcess = GetCurrentProcess(); |
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927 DWORD processId = GetCurrentProcessId(); |
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|
928 HANDLE dumpFile; |
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929 MINIDUMP_TYPE dumpType; |
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930 static const char* cwd; |
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931 |
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932 // If running on a client version of Windows and user has not explicitly enabled dumping |
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933 if (!os::win32::is_windows_server() && !CreateMinidumpOnCrash) { |
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934 VMError::report_coredump_status("Minidumps are not enabled by default on client versions of Windows", false); |
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935 return; |
|
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936 // If running on a server version of Windows and user has explictly disabled dumping |
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937 } else if (os::win32::is_windows_server() && !FLAG_IS_DEFAULT(CreateMinidumpOnCrash) && !CreateMinidumpOnCrash) { |
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938 VMError::report_coredump_status("Minidump has been disabled from the command line", false); |
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939 return; |
|
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940 } |
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941 |
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942 dbghelp = LoadLibrary("DBGHELP.DLL"); |
|
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943 |
|
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944 if (dbghelp == NULL) { |
|
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945 VMError::report_coredump_status("Failed to load dbghelp.dll", false); |
|
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946 return; |
|
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947 } |
|
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948 |
|
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949 _MiniDumpWriteDump = CAST_TO_FN_PTR( |
|
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950 BOOL(WINAPI *)( HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, |
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951 PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION), |
|
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952 GetProcAddress(dbghelp, "MiniDumpWriteDump")); |
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953 |
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954 if (_MiniDumpWriteDump == NULL) { |
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955 VMError::report_coredump_status("Failed to find MiniDumpWriteDump() in module dbghelp.dll", false); |
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956 return; |
|
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957 } |
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958 |
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959 dumpType = (MINIDUMP_TYPE)(MiniDumpWithFullMemory | MiniDumpWithFullMemoryInfo | |
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960 MiniDumpWithHandleData | MiniDumpWithThreadInfo | MiniDumpWithUnloadedModules); |
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961 |
|
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962 |
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963 cwd = get_current_directory(NULL, 0); |
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964 jio_snprintf(buffer, bufferSize, "%s\\hs_err_pid%u.mdmp",cwd, current_process_id()); |
|
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965 dumpFile = CreateFile(buffer, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
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966 |
|
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967 if (dumpFile == INVALID_HANDLE_VALUE) { |
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968 VMError::report_coredump_status("Failed to create file for dumping", false); |
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969 return; |
|
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970 } |
|
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971 |
|
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972 ep.ContextRecord = (PCONTEXT) contextRecord; |
|
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973 ep.ExceptionRecord = (PEXCEPTION_RECORD) exceptionRecord; |
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974 |
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975 mei.ThreadId = GetCurrentThreadId(); |
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976 mei.ExceptionPointers = &ep; |
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977 |
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978 // Older versions of dbghelp.dll (the one shipped with Win2003 for example) may not support all |
|
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979 // the dump types we really want. If first call fails, lets fall back to just use MiniDumpWithFullMemory then. |
|
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980 if (_MiniDumpWriteDump(hProcess, processId, dumpFile, dumpType, &mei, NULL, NULL) == false && |
|
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981 _MiniDumpWriteDump(hProcess, processId, dumpFile, (MINIDUMP_TYPE)MiniDumpWithFullMemory, &mei, NULL, NULL) == false) { |
|
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982 VMError::report_coredump_status("Call to MiniDumpWriteDump() failed", false); |
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983 } else { |
|
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984 VMError::report_coredump_status(buffer, true); |
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985 } |
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986 |
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987 CloseHandle(dumpFile); |
|
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988 } |
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989 |
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990 |
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991 |
| 0 | 992 void os::abort(bool dump_core) |
| 993 { | |
| 994 os::shutdown(); | |
| 995 // no core dump on Windows | |
| 996 ::exit(1); | |
| 997 } | |
| 998 | |
| 999 // Die immediately, no exit hook, no abort hook, no cleanup. | |
| 1000 void os::die() { | |
| 1001 _exit(-1); | |
| 1002 } | |
| 1003 | |
| 1004 // Directory routines copied from src/win32/native/java/io/dirent_md.c | |
| 1005 // * dirent_md.c 1.15 00/02/02 | |
| 1006 // | |
| 1007 // The declarations for DIR and struct dirent are in jvm_win32.h. | |
| 1008 | |
| 1009 /* Caller must have already run dirname through JVM_NativePath, which removes | |
| 1010 duplicate slashes and converts all instances of '/' into '\\'. */ | |
| 1011 | |
| 1012 DIR * | |
| 1013 os::opendir(const char *dirname) | |
| 1014 { | |
| 1015 assert(dirname != NULL, "just checking"); // hotspot change | |
| 1016 DIR *dirp = (DIR *)malloc(sizeof(DIR)); | |
| 1017 DWORD fattr; // hotspot change | |
| 1018 char alt_dirname[4] = { 0, 0, 0, 0 }; | |
| 1019 | |
| 1020 if (dirp == 0) { | |
| 1021 errno = ENOMEM; | |
| 1022 return 0; | |
| 1023 } | |
| 1024 | |
| 1025 /* | |
| 1026 * Win32 accepts "\" in its POSIX stat(), but refuses to treat it | |
| 1027 * as a directory in FindFirstFile(). We detect this case here and | |
| 1028 * prepend the current drive name. | |
| 1029 */ | |
| 1030 if (dirname[1] == '\0' && dirname[0] == '\\') { | |
| 1031 alt_dirname[0] = _getdrive() + 'A' - 1; | |
| 1032 alt_dirname[1] = ':'; | |
| 1033 alt_dirname[2] = '\\'; | |
| 1034 alt_dirname[3] = '\0'; | |
| 1035 dirname = alt_dirname; | |
| 1036 } | |
| 1037 | |
| 1038 dirp->path = (char *)malloc(strlen(dirname) + 5); | |
| 1039 if (dirp->path == 0) { | |
| 1040 free(dirp); | |
| 1041 errno = ENOMEM; | |
| 1042 return 0; | |
| 1043 } | |
| 1044 strcpy(dirp->path, dirname); | |
| 1045 | |
| 1046 fattr = GetFileAttributes(dirp->path); | |
| 1047 if (fattr == 0xffffffff) { | |
| 1048 free(dirp->path); | |
| 1049 free(dirp); | |
| 1050 errno = ENOENT; | |
| 1051 return 0; | |
| 1052 } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) { | |
| 1053 free(dirp->path); | |
| 1054 free(dirp); | |
| 1055 errno = ENOTDIR; | |
| 1056 return 0; | |
| 1057 } | |
| 1058 | |
| 1059 /* Append "*.*", or possibly "\\*.*", to path */ | |
| 1060 if (dirp->path[1] == ':' | |
| 1061 && (dirp->path[2] == '\0' | |
| 1062 || (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) { | |
| 1063 /* No '\\' needed for cases like "Z:" or "Z:\" */ | |
| 1064 strcat(dirp->path, "*.*"); | |
| 1065 } else { | |
| 1066 strcat(dirp->path, "\\*.*"); | |
| 1067 } | |
| 1068 | |
| 1069 dirp->handle = FindFirstFile(dirp->path, &dirp->find_data); | |
| 1070 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
| 1071 if (GetLastError() != ERROR_FILE_NOT_FOUND) { | |
| 1072 free(dirp->path); | |
| 1073 free(dirp); | |
| 1074 errno = EACCES; | |
| 1075 return 0; | |
| 1076 } | |
| 1077 } | |
| 1078 return dirp; | |
| 1079 } | |
| 1080 | |
| 1081 /* parameter dbuf unused on Windows */ | |
| 1082 | |
| 1083 struct dirent * | |
| 1084 os::readdir(DIR *dirp, dirent *dbuf) | |
| 1085 { | |
| 1086 assert(dirp != NULL, "just checking"); // hotspot change | |
| 1087 if (dirp->handle == INVALID_HANDLE_VALUE) { | |
| 1088 return 0; | |
| 1089 } | |
| 1090 | |
| 1091 strcpy(dirp->dirent.d_name, dirp->find_data.cFileName); | |
| 1092 | |
| 1093 if (!FindNextFile(dirp->handle, &dirp->find_data)) { | |
| 1094 if (GetLastError() == ERROR_INVALID_HANDLE) { | |
| 1095 errno = EBADF; | |
| 1096 return 0; | |
| 1097 } | |
| 1098 FindClose(dirp->handle); | |
| 1099 dirp->handle = INVALID_HANDLE_VALUE; | |
| 1100 } | |
| 1101 | |
| 1102 return &dirp->dirent; | |
| 1103 } | |
| 1104 | |
| 1105 int | |
| 1106 os::closedir(DIR *dirp) | |
| 1107 { | |
| 1108 assert(dirp != NULL, "just checking"); // hotspot change | |
| 1109 if (dirp->handle != INVALID_HANDLE_VALUE) { | |
| 1110 if (!FindClose(dirp->handle)) { | |
| 1111 errno = EBADF; | |
| 1112 return -1; | |
| 1113 } | |
| 1114 dirp->handle = INVALID_HANDLE_VALUE; | |
| 1115 } | |
| 1116 free(dirp->path); | |
| 1117 free(dirp); | |
| 1118 return 0; | |
| 1119 } | |
| 1120 | |
|
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1121 // This must be hard coded because it's the system's temporary |
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1122 // directory not the java application's temp directory, ala java.io.tmpdir. |
|
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1123 const char* os::get_temp_directory() { |
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1124 static char path_buf[MAX_PATH]; |
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1125 if (GetTempPath(MAX_PATH, path_buf)>0) |
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1126 return path_buf; |
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1127 else{ |
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1128 path_buf[0]='\0'; |
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1129 return path_buf; |
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|
1130 } |
| 0 | 1131 } |
| 1132 | |
| 691 | 1133 static bool file_exists(const char* filename) { |
| 1134 if (filename == NULL || strlen(filename) == 0) { | |
| 1135 return false; | |
| 1136 } | |
| 1137 return GetFileAttributes(filename) != INVALID_FILE_ATTRIBUTES; | |
| 1138 } | |
| 1139 | |
| 1140 void os::dll_build_name(char *buffer, size_t buflen, | |
| 1141 const char* pname, const char* fname) { | |
| 1142 const size_t pnamelen = pname ? strlen(pname) : 0; | |
| 1143 const char c = (pnamelen > 0) ? pname[pnamelen-1] : 0; | |
| 1144 | |
| 1145 // Quietly truncates on buffer overflow. Should be an error. | |
| 1146 if (pnamelen + strlen(fname) + 10 > buflen) { | |
| 1147 *buffer = '\0'; | |
| 1148 return; | |
| 1149 } | |
| 1150 | |
| 1151 if (pnamelen == 0) { | |
| 1152 jio_snprintf(buffer, buflen, "%s.dll", fname); | |
| 1153 } else if (c == ':' || c == '\\') { | |
| 1154 jio_snprintf(buffer, buflen, "%s%s.dll", pname, fname); | |
| 1155 } else if (strchr(pname, *os::path_separator()) != NULL) { | |
| 1156 int n; | |
| 1157 char** pelements = split_path(pname, &n); | |
| 1158 for (int i = 0 ; i < n ; i++) { | |
| 1159 char* path = pelements[i]; | |
| 1160 // Really shouldn't be NULL, but check can't hurt | |
| 1161 size_t plen = (path == NULL) ? 0 : strlen(path); | |
| 1162 if (plen == 0) { | |
| 1163 continue; // skip the empty path values | |
| 1164 } | |
| 1165 const char lastchar = path[plen - 1]; | |
| 1166 if (lastchar == ':' || lastchar == '\\') { | |
| 1167 jio_snprintf(buffer, buflen, "%s%s.dll", path, fname); | |
| 1168 } else { | |
| 1169 jio_snprintf(buffer, buflen, "%s\\%s.dll", path, fname); | |
| 1170 } | |
| 1171 if (file_exists(buffer)) { | |
| 1172 break; | |
| 1173 } | |
| 242 | 1174 } |
| 691 | 1175 // release the storage |
| 1176 for (int i = 0 ; i < n ; i++) { | |
| 1177 if (pelements[i] != NULL) { | |
| 1178 FREE_C_HEAP_ARRAY(char, pelements[i]); | |
| 1179 } | |
| 242 | 1180 } |
| 691 | 1181 if (pelements != NULL) { |
| 1182 FREE_C_HEAP_ARRAY(char*, pelements); | |
| 1183 } | |
| 1184 } else { | |
| 1185 jio_snprintf(buffer, buflen, "%s\\%s.dll", pname, fname); | |
| 1186 } | |
| 242 | 1187 } |
| 1188 | |
| 0 | 1189 // Needs to be in os specific directory because windows requires another |
| 1190 // header file <direct.h> | |
| 1191 const char* os::get_current_directory(char *buf, int buflen) { | |
| 1192 return _getcwd(buf, buflen); | |
| 1193 } | |
| 1194 | |
| 1195 //----------------------------------------------------------- | |
| 1196 // Helper functions for fatal error handler | |
| 1197 | |
| 1198 // The following library functions are resolved dynamically at runtime: | |
| 1199 | |
| 1200 // PSAPI functions, for Windows NT, 2000, XP | |
| 1201 | |
| 1202 // psapi.h doesn't come with Visual Studio 6; it can be downloaded as Platform | |
| 1203 // SDK from Microsoft. Here are the definitions copied from psapi.h | |
| 1204 typedef struct _MODULEINFO { | |
| 1205 LPVOID lpBaseOfDll; | |
| 1206 DWORD SizeOfImage; | |
| 1207 LPVOID EntryPoint; | |
| 1208 } MODULEINFO, *LPMODULEINFO; | |
| 1209 | |
| 1210 static BOOL (WINAPI *_EnumProcessModules) ( HANDLE, HMODULE *, DWORD, LPDWORD ); | |
| 1211 static DWORD (WINAPI *_GetModuleFileNameEx) ( HANDLE, HMODULE, LPTSTR, DWORD ); | |
| 1212 static BOOL (WINAPI *_GetModuleInformation)( HANDLE, HMODULE, LPMODULEINFO, DWORD ); | |
| 1213 | |
| 1214 // ToolHelp Functions, for Windows 95, 98 and ME | |
| 1215 | |
| 1216 static HANDLE(WINAPI *_CreateToolhelp32Snapshot)(DWORD,DWORD) ; | |
| 1217 static BOOL (WINAPI *_Module32First) (HANDLE,LPMODULEENTRY32) ; | |
| 1218 static BOOL (WINAPI *_Module32Next) (HANDLE,LPMODULEENTRY32) ; | |
| 1219 | |
| 1220 bool _has_psapi; | |
| 1221 bool _psapi_init = false; | |
| 1222 bool _has_toolhelp; | |
| 1223 | |
| 1224 static bool _init_psapi() { | |
| 1225 HINSTANCE psapi = LoadLibrary( "PSAPI.DLL" ) ; | |
| 1226 if( psapi == NULL ) return false ; | |
| 1227 | |
| 1228 _EnumProcessModules = CAST_TO_FN_PTR( | |
| 1229 BOOL(WINAPI *)(HANDLE, HMODULE *, DWORD, LPDWORD), | |
| 1230 GetProcAddress(psapi, "EnumProcessModules")) ; | |
| 1231 _GetModuleFileNameEx = CAST_TO_FN_PTR( | |
| 1232 DWORD (WINAPI *)(HANDLE, HMODULE, LPTSTR, DWORD), | |
| 1233 GetProcAddress(psapi, "GetModuleFileNameExA")); | |
| 1234 _GetModuleInformation = CAST_TO_FN_PTR( | |
| 1235 BOOL (WINAPI *)(HANDLE, HMODULE, LPMODULEINFO, DWORD), | |
| 1236 GetProcAddress(psapi, "GetModuleInformation")); | |
| 1237 | |
| 1238 _has_psapi = (_EnumProcessModules && _GetModuleFileNameEx && _GetModuleInformation); | |
| 1239 _psapi_init = true; | |
| 1240 return _has_psapi; | |
| 1241 } | |
| 1242 | |
| 1243 static bool _init_toolhelp() { | |
| 1244 HINSTANCE kernel32 = LoadLibrary("Kernel32.DLL") ; | |
| 1245 if (kernel32 == NULL) return false ; | |
| 1246 | |
| 1247 _CreateToolhelp32Snapshot = CAST_TO_FN_PTR( | |
| 1248 HANDLE(WINAPI *)(DWORD,DWORD), | |
| 1249 GetProcAddress(kernel32, "CreateToolhelp32Snapshot")); | |
| 1250 _Module32First = CAST_TO_FN_PTR( | |
| 1251 BOOL(WINAPI *)(HANDLE,LPMODULEENTRY32), | |
| 1252 GetProcAddress(kernel32, "Module32First" )); | |
| 1253 _Module32Next = CAST_TO_FN_PTR( | |
| 1254 BOOL(WINAPI *)(HANDLE,LPMODULEENTRY32), | |
| 1255 GetProcAddress(kernel32, "Module32Next" )); | |
| 1256 | |
| 1257 _has_toolhelp = (_CreateToolhelp32Snapshot && _Module32First && _Module32Next); | |
| 1258 return _has_toolhelp; | |
| 1259 } | |
| 1260 | |
| 1261 #ifdef _WIN64 | |
| 1262 // Helper routine which returns true if address in | |
| 1263 // within the NTDLL address space. | |
| 1264 // | |
| 1265 static bool _addr_in_ntdll( address addr ) | |
| 1266 { | |
| 1267 HMODULE hmod; | |
| 1268 MODULEINFO minfo; | |
| 1269 | |
| 1270 hmod = GetModuleHandle("NTDLL.DLL"); | |
| 1271 if ( hmod == NULL ) return false; | |
| 1272 if ( !_GetModuleInformation( GetCurrentProcess(), hmod, | |
| 1273 &minfo, sizeof(MODULEINFO)) ) | |
| 1274 return false; | |
| 1275 | |
| 1276 if ( (addr >= minfo.lpBaseOfDll) && | |
| 1277 (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage))) | |
| 1278 return true; | |
| 1279 else | |
| 1280 return false; | |
| 1281 } | |
| 1282 #endif | |
| 1283 | |
| 1284 | |
| 1285 // Enumerate all modules for a given process ID | |
| 1286 // | |
| 1287 // Notice that Windows 95/98/Me and Windows NT/2000/XP have | |
| 1288 // different API for doing this. We use PSAPI.DLL on NT based | |
| 1289 // Windows and ToolHelp on 95/98/Me. | |
| 1290 | |
| 1291 // Callback function that is called by enumerate_modules() on | |
| 1292 // every DLL module. | |
| 1293 // Input parameters: | |
| 1294 // int pid, | |
| 1295 // char* module_file_name, | |
| 1296 // address module_base_addr, | |
| 1297 // unsigned module_size, | |
| 1298 // void* param | |
| 1299 typedef int (*EnumModulesCallbackFunc)(int, char *, address, unsigned, void *); | |
| 1300 | |
| 1301 // enumerate_modules for Windows NT, using PSAPI | |
| 1302 static int _enumerate_modules_winnt( int pid, EnumModulesCallbackFunc func, void * param) | |
| 1303 { | |
| 1304 HANDLE hProcess ; | |
| 1305 | |
| 1306 # define MAX_NUM_MODULES 128 | |
| 1307 HMODULE modules[MAX_NUM_MODULES]; | |
| 1308 static char filename[ MAX_PATH ]; | |
| 1309 int result = 0; | |
| 1310 | |
| 1311 if (!_has_psapi && (_psapi_init || !_init_psapi())) return 0; | |
| 1312 | |
| 1313 hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, | |
| 1314 FALSE, pid ) ; | |
| 1315 if (hProcess == NULL) return 0; | |
| 1316 | |
| 1317 DWORD size_needed; | |
| 1318 if (!_EnumProcessModules(hProcess, modules, | |
| 1319 sizeof(modules), &size_needed)) { | |
| 1320 CloseHandle( hProcess ); | |
| 1321 return 0; | |
| 1322 } | |
| 1323 | |
| 1324 // number of modules that are currently loaded | |
| 1325 int num_modules = size_needed / sizeof(HMODULE); | |
| 1326 | |
| 1327 for (int i = 0; i < MIN2(num_modules, MAX_NUM_MODULES); i++) { | |
| 1328 // Get Full pathname: | |
| 1329 if(!_GetModuleFileNameEx(hProcess, modules[i], | |
| 1330 filename, sizeof(filename))) { | |
| 1331 filename[0] = '\0'; | |
| 1332 } | |
| 1333 | |
| 1334 MODULEINFO modinfo; | |
| 1335 if (!_GetModuleInformation(hProcess, modules[i], | |
| 1336 &modinfo, sizeof(modinfo))) { | |
| 1337 modinfo.lpBaseOfDll = NULL; | |
| 1338 modinfo.SizeOfImage = 0; | |
| 1339 } | |
| 1340 | |
| 1341 // Invoke callback function | |
| 1342 result = func(pid, filename, (address)modinfo.lpBaseOfDll, | |
| 1343 modinfo.SizeOfImage, param); | |
| 1344 if (result) break; | |
| 1345 } | |
| 1346 | |
| 1347 CloseHandle( hProcess ) ; | |
| 1348 return result; | |
| 1349 } | |
| 1350 | |
| 1351 | |
| 1352 // enumerate_modules for Windows 95/98/ME, using TOOLHELP | |
| 1353 static int _enumerate_modules_windows( int pid, EnumModulesCallbackFunc func, void *param) | |
| 1354 { | |
| 1355 HANDLE hSnapShot ; | |
| 1356 static MODULEENTRY32 modentry ; | |
| 1357 int result = 0; | |
| 1358 | |
| 1359 if (!_has_toolhelp) return 0; | |
| 1360 | |
| 1361 // Get a handle to a Toolhelp snapshot of the system | |
| 1362 hSnapShot = _CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid ) ; | |
| 1363 if( hSnapShot == INVALID_HANDLE_VALUE ) { | |
| 1364 return FALSE ; | |
| 1365 } | |
| 1366 | |
| 1367 // iterate through all modules | |
| 1368 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
| 1369 bool not_done = _Module32First( hSnapShot, &modentry ) != 0; | |
| 1370 | |
| 1371 while( not_done ) { | |
| 1372 // invoke the callback | |
| 1373 result=func(pid, modentry.szExePath, (address)modentry.modBaseAddr, | |
| 1374 modentry.modBaseSize, param); | |
| 1375 if (result) break; | |
| 1376 | |
| 1377 modentry.dwSize = sizeof(MODULEENTRY32) ; | |
| 1378 not_done = _Module32Next( hSnapShot, &modentry ) != 0; | |
| 1379 } | |
| 1380 | |
| 1381 CloseHandle(hSnapShot); | |
| 1382 return result; | |
| 1383 } | |
| 1384 | |
| 1385 int enumerate_modules( int pid, EnumModulesCallbackFunc func, void * param ) | |
| 1386 { | |
| 1387 // Get current process ID if caller doesn't provide it. | |
| 1388 if (!pid) pid = os::current_process_id(); | |
| 1389 | |
| 1390 if (os::win32::is_nt()) return _enumerate_modules_winnt (pid, func, param); | |
| 1391 else return _enumerate_modules_windows(pid, func, param); | |
| 1392 } | |
| 1393 | |
| 1394 struct _modinfo { | |
| 1395 address addr; | |
| 1396 char* full_path; // point to a char buffer | |
| 1397 int buflen; // size of the buffer | |
| 1398 address base_addr; | |
| 1399 }; | |
| 1400 | |
| 1401 static int _locate_module_by_addr(int pid, char * mod_fname, address base_addr, | |
| 1402 unsigned size, void * param) { | |
| 1403 struct _modinfo *pmod = (struct _modinfo *)param; | |
| 1404 if (!pmod) return -1; | |
| 1405 | |
| 1406 if (base_addr <= pmod->addr && | |
| 1407 base_addr+size > pmod->addr) { | |
| 1408 // if a buffer is provided, copy path name to the buffer | |
| 1409 if (pmod->full_path) { | |
| 1410 jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname); | |
| 1411 } | |
| 1412 pmod->base_addr = base_addr; | |
| 1413 return 1; | |
| 1414 } | |
| 1415 return 0; | |
| 1416 } | |
| 1417 | |
| 1418 bool os::dll_address_to_library_name(address addr, char* buf, | |
| 1419 int buflen, int* offset) { | |
| 1420 // NOTE: the reason we don't use SymGetModuleInfo() is it doesn't always | |
| 1421 // return the full path to the DLL file, sometimes it returns path | |
| 1422 // to the corresponding PDB file (debug info); sometimes it only | |
| 1423 // returns partial path, which makes life painful. | |
| 1424 | |
| 1425 struct _modinfo mi; | |
| 1426 mi.addr = addr; | |
| 1427 mi.full_path = buf; | |
| 1428 mi.buflen = buflen; | |
| 1429 int pid = os::current_process_id(); | |
| 1430 if (enumerate_modules(pid, _locate_module_by_addr, (void *)&mi)) { | |
| 1431 // buf already contains path name | |
| 1432 if (offset) *offset = addr - mi.base_addr; | |
| 1433 return true; | |
| 1434 } else { | |
| 1435 if (buf) buf[0] = '\0'; | |
| 1436 if (offset) *offset = -1; | |
| 1437 return false; | |
| 1438 } | |
| 1439 } | |
| 1440 | |
| 1441 bool os::dll_address_to_function_name(address addr, char *buf, | |
| 1442 int buflen, int *offset) { | |
|
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1443 if (Decoder::decode(addr, buf, buflen, offset) == Decoder::no_error) { |
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1444 return true; |
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1445 } |
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1446 if (offset != NULL) *offset = -1; |
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1447 if (buf != NULL) buf[0] = '\0'; |
| 0 | 1448 return false; |
| 1449 } | |
| 1450 | |
| 1451 // save the start and end address of jvm.dll into param[0] and param[1] | |
| 1452 static int _locate_jvm_dll(int pid, char* mod_fname, address base_addr, | |
| 1453 unsigned size, void * param) { | |
| 1454 if (!param) return -1; | |
| 1455 | |
| 1456 if (base_addr <= (address)_locate_jvm_dll && | |
| 1457 base_addr+size > (address)_locate_jvm_dll) { | |
| 1458 ((address*)param)[0] = base_addr; | |
| 1459 ((address*)param)[1] = base_addr + size; | |
| 1460 return 1; | |
| 1461 } | |
| 1462 return 0; | |
| 1463 } | |
| 1464 | |
| 1465 address vm_lib_location[2]; // start and end address of jvm.dll | |
| 1466 | |
| 1467 // check if addr is inside jvm.dll | |
| 1468 bool os::address_is_in_vm(address addr) { | |
| 1469 if (!vm_lib_location[0] || !vm_lib_location[1]) { | |
| 1470 int pid = os::current_process_id(); | |
| 1471 if (!enumerate_modules(pid, _locate_jvm_dll, (void *)vm_lib_location)) { | |
| 1472 assert(false, "Can't find jvm module."); | |
| 1473 return false; | |
| 1474 } | |
| 1475 } | |
| 1476 | |
| 1477 return (vm_lib_location[0] <= addr) && (addr < vm_lib_location[1]); | |
| 1478 } | |
| 1479 | |
| 1480 // print module info; param is outputStream* | |
| 1481 static int _print_module(int pid, char* fname, address base, | |
| 1482 unsigned size, void* param) { | |
| 1483 if (!param) return -1; | |
| 1484 | |
| 1485 outputStream* st = (outputStream*)param; | |
| 1486 | |
| 1487 address end_addr = base + size; | |
| 1488 st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base, end_addr, fname); | |
| 1489 return 0; | |
| 1490 } | |
| 1491 | |
| 1492 // Loads .dll/.so and | |
| 1493 // in case of error it checks if .dll/.so was built for the | |
| 1494 // same architecture as Hotspot is running on | |
| 1495 void * os::dll_load(const char *name, char *ebuf, int ebuflen) | |
| 1496 { | |
| 1497 void * result = LoadLibrary(name); | |
| 1498 if (result != NULL) | |
| 1499 { | |
| 1500 return result; | |
| 1501 } | |
| 1502 | |
| 1503 long errcode = GetLastError(); | |
| 1504 if (errcode == ERROR_MOD_NOT_FOUND) { | |
| 1505 strncpy(ebuf, "Can't find dependent libraries", ebuflen-1); | |
| 1506 ebuf[ebuflen-1]='\0'; | |
| 1507 return NULL; | |
| 1508 } | |
| 1509 | |
| 1510 // Parsing dll below | |
| 1511 // If we can read dll-info and find that dll was built | |
| 1512 // for an architecture other than Hotspot is running in | |
| 1513 // - then print to buffer "DLL was built for a different architecture" | |
| 1514 // else call getLastErrorString to obtain system error message | |
| 1515 | |
| 1516 // Read system error message into ebuf | |
| 1517 // It may or may not be overwritten below (in the for loop and just above) | |
| 1518 getLastErrorString(ebuf, (size_t) ebuflen); | |
| 1519 ebuf[ebuflen-1]='\0'; | |
| 1520 int file_descriptor=::open(name, O_RDONLY | O_BINARY, 0); | |
| 1521 if (file_descriptor<0) | |
| 1522 { | |
| 1523 return NULL; | |
| 1524 } | |
| 1525 | |
| 1526 uint32_t signature_offset; | |
| 1527 uint16_t lib_arch=0; | |
| 1528 bool failed_to_get_lib_arch= | |
| 1529 ( | |
| 1530 //Go to position 3c in the dll | |
| 1531 (os::seek_to_file_offset(file_descriptor,IMAGE_FILE_PTR_TO_SIGNATURE)<0) | |
| 1532 || | |
| 1533 // Read loacation of signature | |
| 1534 (sizeof(signature_offset)!= | |
| 1535 (os::read(file_descriptor, (void*)&signature_offset,sizeof(signature_offset)))) | |
| 1536 || | |
| 1537 //Go to COFF File Header in dll | |
| 1538 //that is located after"signature" (4 bytes long) | |
| 1539 (os::seek_to_file_offset(file_descriptor, | |
| 1540 signature_offset+IMAGE_FILE_SIGNATURE_LENGTH)<0) | |
| 1541 || | |
| 1542 //Read field that contains code of architecture | |
| 1543 // that dll was build for | |
| 1544 (sizeof(lib_arch)!= | |
| 1545 (os::read(file_descriptor, (void*)&lib_arch,sizeof(lib_arch)))) | |
| 1546 ); | |
| 1547 | |
| 1548 ::close(file_descriptor); | |
| 1549 if (failed_to_get_lib_arch) | |
| 1550 { | |
| 1551 // file i/o error - report getLastErrorString(...) msg | |
| 1552 return NULL; | |
| 1553 } | |
| 1554 | |
| 1555 typedef struct | |
| 1556 { | |
| 1557 uint16_t arch_code; | |
| 1558 char* arch_name; | |
| 1559 } arch_t; | |
| 1560 | |
| 1561 static const arch_t arch_array[]={ | |
| 1562 {IMAGE_FILE_MACHINE_I386, (char*)"IA 32"}, | |
| 1563 {IMAGE_FILE_MACHINE_AMD64, (char*)"AMD 64"}, | |
| 1564 {IMAGE_FILE_MACHINE_IA64, (char*)"IA 64"} | |
| 1565 }; | |
| 1566 #if (defined _M_IA64) | |
| 1567 static const uint16_t running_arch=IMAGE_FILE_MACHINE_IA64; | |
| 1568 #elif (defined _M_AMD64) | |
| 1569 static const uint16_t running_arch=IMAGE_FILE_MACHINE_AMD64; | |
| 1570 #elif (defined _M_IX86) | |
| 1571 static const uint16_t running_arch=IMAGE_FILE_MACHINE_I386; | |
| 1572 #else | |
| 1573 #error Method os::dll_load requires that one of following \ | |
| 1574 is defined :_M_IA64,_M_AMD64 or _M_IX86 | |
| 1575 #endif | |
| 1576 | |
| 1577 | |
| 1578 // Obtain a string for printf operation | |
| 1579 // lib_arch_str shall contain string what platform this .dll was built for | |
| 1580 // running_arch_str shall string contain what platform Hotspot was built for | |
| 1581 char *running_arch_str=NULL,*lib_arch_str=NULL; | |
| 1582 for (unsigned int i=0;i<ARRAY_SIZE(arch_array);i++) | |
| 1583 { | |
| 1584 if (lib_arch==arch_array[i].arch_code) | |
| 1585 lib_arch_str=arch_array[i].arch_name; | |
| 1586 if (running_arch==arch_array[i].arch_code) | |
| 1587 running_arch_str=arch_array[i].arch_name; | |
| 1588 } | |
| 1589 | |
| 1590 assert(running_arch_str, | |
| 1591 "Didn't find runing architecture code in arch_array"); | |
| 1592 | |
| 1593 // If the architure is right | |
| 1594 // but some other error took place - report getLastErrorString(...) msg | |
| 1595 if (lib_arch == running_arch) | |
| 1596 { | |
| 1597 return NULL; | |
| 1598 } | |
| 1599 | |
| 1600 if (lib_arch_str!=NULL) | |
| 1601 { | |
| 1602 ::_snprintf(ebuf, ebuflen-1, | |
| 1603 "Can't load %s-bit .dll on a %s-bit platform", | |
| 1604 lib_arch_str,running_arch_str); | |
| 1605 } | |
| 1606 else | |
| 1607 { | |
| 1608 // don't know what architecture this dll was build for | |
| 1609 ::_snprintf(ebuf, ebuflen-1, | |
| 1610 "Can't load this .dll (machine code=0x%x) on a %s-bit platform", | |
| 1611 lib_arch,running_arch_str); | |
| 1612 } | |
| 1613 | |
| 1614 return NULL; | |
| 1615 } | |
| 1616 | |
| 1617 | |
| 1618 void os::print_dll_info(outputStream *st) { | |
| 1619 int pid = os::current_process_id(); | |
| 1620 st->print_cr("Dynamic libraries:"); | |
| 1621 enumerate_modules(pid, _print_module, (void *)st); | |
| 1622 } | |
| 1623 | |
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1624 // function pointer to Windows API "GetNativeSystemInfo". |
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1625 typedef void (WINAPI *GetNativeSystemInfo_func_type)(LPSYSTEM_INFO); |
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1626 static GetNativeSystemInfo_func_type _GetNativeSystemInfo; |
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1627 |
| 0 | 1628 void os::print_os_info(outputStream* st) { |
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1629 st->print("OS:"); |
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1630 |
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1631 OSVERSIONINFOEX osvi; |
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1632 ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX)); |
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1633 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
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1634 |
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1635 if (!GetVersionEx((OSVERSIONINFO *)&osvi)) { |
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1636 st->print_cr("N/A"); |
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1637 return; |
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1638 } |
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1639 |
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1640 int os_vers = osvi.dwMajorVersion * 1000 + osvi.dwMinorVersion; |
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1641 if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) { |
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1642 switch (os_vers) { |
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1643 case 3051: st->print(" Windows NT 3.51"); break; |
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1644 case 4000: st->print(" Windows NT 4.0"); break; |
|
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1645 case 5000: st->print(" Windows 2000"); break; |
|
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1646 case 5001: st->print(" Windows XP"); break; |
|
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1647 case 5002: |
|
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|
1648 case 6000: |
|
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|
1649 case 6001: { |
|
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1650 // Retrieve SYSTEM_INFO from GetNativeSystemInfo call so that we could |
|
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1651 // find out whether we are running on 64 bit processor or not. |
|
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1652 SYSTEM_INFO si; |
|
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|
1653 ZeroMemory(&si, sizeof(SYSTEM_INFO)); |
|
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|
1654 // Check to see if _GetNativeSystemInfo has been initialized. |
|
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1655 if (_GetNativeSystemInfo == NULL) { |
|
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|
1656 HMODULE hKernel32 = GetModuleHandle(TEXT("kernel32.dll")); |
|
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|
1657 _GetNativeSystemInfo = |
|
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|
1658 CAST_TO_FN_PTR(GetNativeSystemInfo_func_type, |
|
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|
1659 GetProcAddress(hKernel32, |
|
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|
1660 "GetNativeSystemInfo")); |
|
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|
1661 if (_GetNativeSystemInfo == NULL) |
|
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|
1662 GetSystemInfo(&si); |
|
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|
1663 } else { |
|
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|
1664 _GetNativeSystemInfo(&si); |
|
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|
1665 } |
|
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|
1666 if (os_vers == 5002) { |
|
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|
1667 if (osvi.wProductType == VER_NT_WORKSTATION && |
|
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|
1668 si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
|
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|
1669 st->print(" Windows XP x64 Edition"); |
|
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|
1670 else |
|
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|
1671 st->print(" Windows Server 2003 family"); |
|
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|
1672 } else if (os_vers == 6000) { |
|
273
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|
1673 if (osvi.wProductType == VER_NT_WORKSTATION) |
|
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|
1674 st->print(" Windows Vista"); |
|
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|
1675 else |
|
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|
1676 st->print(" Windows Server 2008"); |
|
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|
1677 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
|
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|
1678 st->print(" , 64 bit"); |
|
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diff
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|
1679 } else if (os_vers == 6001) { |
|
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|
1680 if (osvi.wProductType == VER_NT_WORKSTATION) { |
|
aafa4232dfd7
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|
1681 st->print(" Windows 7"); |
|
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|
1682 } else { |
|
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|
1683 // Unrecognized windows, print out its major and minor versions |
|
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diff
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|
1684 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
|
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|
1685 } |
|
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|
1686 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
|
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|
1687 st->print(" , 64 bit"); |
|
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|
1688 } else { // future os |
|
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|
1689 // Unrecognized windows, print out its major and minor versions |
|
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diff
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|
1690 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
|
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|
1691 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) |
|
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|
1692 st->print(" , 64 bit"); |
|
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|
1693 } |
|
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|
1694 break; |
|
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|
1695 } |
|
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|
1696 default: // future windows, print out its major and minor versions |
|
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|
1697 st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
|
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|
1698 } |
|
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|
1699 } else { |
|
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|
1700 switch (os_vers) { |
|
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|
1701 case 4000: st->print(" Windows 95"); break; |
|
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|
1702 case 4010: st->print(" Windows 98"); break; |
|
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|
1703 case 4090: st->print(" Windows Me"); break; |
|
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1704 default: // future windows, print out its major and minor versions |
|
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|
1705 st->print(" Windows %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion); |
|
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|
1706 } |
|
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|
1707 } |
|
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|
1708 st->print(" Build %d", osvi.dwBuildNumber); |
|
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|
1709 st->print(" %s", osvi.szCSDVersion); // service pack |
|
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|
1710 st->cr(); |
| 0 | 1711 } |
| 1712 | |
| 1713 void os::print_memory_info(outputStream* st) { | |
| 1714 st->print("Memory:"); | |
| 1715 st->print(" %dk page", os::vm_page_size()>>10); | |
| 1716 | |
|
877
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diff
changeset
|
1717 // Use GlobalMemoryStatusEx() because GlobalMemoryStatus() may return incorrect |
|
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|
1718 // value if total memory is larger than 4GB |
|
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|
1719 MEMORYSTATUSEX ms; |
|
8c79517a9300
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diff
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|
1720 ms.dwLength = sizeof(ms); |
|
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diff
changeset
|
1721 GlobalMemoryStatusEx(&ms); |
| 0 | 1722 |
| 1723 st->print(", physical %uk", os::physical_memory() >> 10); | |
| 1724 st->print("(%uk free)", os::available_memory() >> 10); | |
| 1725 | |
|
877
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changeset
|
1726 st->print(", swap %uk", ms.ullTotalPageFile >> 10); |
|
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6840305: Discrepancy in system memory details (when 4G or greater) reported by JVM and Windows OS
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|
1727 st->print("(%uk free)", ms.ullAvailPageFile >> 10); |
| 0 | 1728 st->cr(); |
| 1729 } | |
| 1730 | |
| 1731 void os::print_siginfo(outputStream *st, void *siginfo) { | |
| 1732 EXCEPTION_RECORD* er = (EXCEPTION_RECORD*)siginfo; | |
| 1733 st->print("siginfo:"); | |
| 1734 st->print(" ExceptionCode=0x%x", er->ExceptionCode); | |
| 1735 | |
| 1736 if (er->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
| 1737 er->NumberParameters >= 2) { | |
| 1738 switch (er->ExceptionInformation[0]) { | |
| 1739 case 0: st->print(", reading address"); break; | |
| 1740 case 1: st->print(", writing address"); break; | |
| 1741 default: st->print(", ExceptionInformation=" INTPTR_FORMAT, | |
| 1742 er->ExceptionInformation[0]); | |
| 1743 } | |
| 1744 st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]); | |
| 1745 } else if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR && | |
| 1746 er->NumberParameters >= 2 && UseSharedSpaces) { | |
| 1747 FileMapInfo* mapinfo = FileMapInfo::current_info(); | |
| 1748 if (mapinfo->is_in_shared_space((void*)er->ExceptionInformation[1])) { | |
| 1749 st->print("\n\nError accessing class data sharing archive." \ | |
| 1750 " Mapped file inaccessible during execution, " \ | |
| 1751 " possible disk/network problem."); | |
| 1752 } | |
| 1753 } else { | |
| 1754 int num = er->NumberParameters; | |
| 1755 if (num > 0) { | |
| 1756 st->print(", ExceptionInformation="); | |
| 1757 for (int i = 0; i < num; i++) { | |
| 1758 st->print(INTPTR_FORMAT " ", er->ExceptionInformation[i]); | |
| 1759 } | |
| 1760 } | |
| 1761 } | |
| 1762 st->cr(); | |
| 1763 } | |
| 1764 | |
| 1765 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { | |
| 1766 // do nothing | |
| 1767 } | |
| 1768 | |
| 1769 static char saved_jvm_path[MAX_PATH] = {0}; | |
| 1770 | |
| 1771 // Find the full path to the current module, jvm.dll or jvm_g.dll | |
| 1772 void os::jvm_path(char *buf, jint buflen) { | |
| 1773 // Error checking. | |
| 1774 if (buflen < MAX_PATH) { | |
| 1775 assert(false, "must use a large-enough buffer"); | |
| 1776 buf[0] = '\0'; | |
| 1777 return; | |
| 1778 } | |
| 1779 // Lazy resolve the path to current module. | |
| 1780 if (saved_jvm_path[0] != 0) { | |
| 1781 strcpy(buf, saved_jvm_path); | |
| 1782 return; | |
| 1783 } | |
| 1784 | |
| 1985 | 1785 buf[0] = '\0'; |
| 1786 if (strcmp(Arguments::sun_java_launcher(), "gamma") == 0) { | |
| 1787 // Support for the gamma launcher. Check for an | |
|
2027
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|
1788 // JAVA_HOME environment variable |
| 1985 | 1789 // and fix up the path so it looks like |
| 1790 // libjvm.so is installed there (append a fake suffix | |
| 1791 // hotspot/libjvm.so). | |
|
2027
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|
1792 char* java_home_var = ::getenv("JAVA_HOME"); |
| 1985 | 1793 if (java_home_var != NULL && java_home_var[0] != 0) { |
| 1794 | |
| 1795 strncpy(buf, java_home_var, buflen); | |
| 1796 | |
| 1797 // determine if this is a legacy image or modules image | |
| 1798 // modules image doesn't have "jre" subdirectory | |
| 1799 size_t len = strlen(buf); | |
| 1800 char* jrebin_p = buf + len; | |
| 1801 jio_snprintf(jrebin_p, buflen-len, "\\jre\\bin\\"); | |
| 1802 if (0 != _access(buf, 0)) { | |
| 1803 jio_snprintf(jrebin_p, buflen-len, "\\bin\\"); | |
| 1804 } | |
| 1805 len = strlen(buf); | |
| 1806 jio_snprintf(buf + len, buflen-len, "hotspot\\jvm.dll"); | |
| 1807 } | |
| 1808 } | |
| 1809 | |
| 1810 if(buf[0] == '\0') { | |
| 0 | 1811 GetModuleFileName(vm_lib_handle, buf, buflen); |
| 1985 | 1812 } |
| 0 | 1813 strcpy(saved_jvm_path, buf); |
| 1814 } | |
| 1815 | |
| 1816 | |
| 1817 void os::print_jni_name_prefix_on(outputStream* st, int args_size) { | |
| 1818 #ifndef _WIN64 | |
| 1819 st->print("_"); | |
| 1820 #endif | |
| 1821 } | |
| 1822 | |
| 1823 | |
| 1824 void os::print_jni_name_suffix_on(outputStream* st, int args_size) { | |
| 1825 #ifndef _WIN64 | |
| 1826 st->print("@%d", args_size * sizeof(int)); | |
| 1827 #endif | |
| 1828 } | |
| 1829 | |
|
1980
828eafbd85cc
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diff
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|
1830 // This method is a copy of JDK's sysGetLastErrorString |
|
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diff
changeset
|
1831 // from src/windows/hpi/src/system_md.c |
|
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diff
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|
1832 |
|
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diff
changeset
|
1833 size_t os::lasterror(char *buf, size_t len) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
1834 long errval; |
|
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diff
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|
1835 |
|
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diff
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|
1836 if ((errval = GetLastError()) != 0) { |
|
828eafbd85cc
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diff
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|
1837 /* DOS error */ |
|
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diff
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|
1838 int n = (int)FormatMessage( |
|
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diff
changeset
|
1839 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, |
|
828eafbd85cc
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diff
changeset
|
1840 NULL, |
|
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diff
changeset
|
1841 errval, |
|
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6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
1842 0, |
|
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
1843 buf, |
|
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1972
diff
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|
1844 (DWORD)len, |
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1845 NULL); |
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1846 if (n > 3) { |
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1847 /* Drop final '.', CR, LF */ |
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1848 if (buf[n - 1] == '\n') n--; |
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1849 if (buf[n - 1] == '\r') n--; |
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1850 if (buf[n - 1] == '.') n--; |
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1851 buf[n] = '\0'; |
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1852 } |
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1853 return n; |
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1854 } |
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1855 |
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1856 if (errno != 0) { |
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1857 /* C runtime error that has no corresponding DOS error code */ |
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1858 const char *s = strerror(errno); |
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1859 size_t n = strlen(s); |
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1860 if (n >= len) n = len - 1; |
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1861 strncpy(buf, s, n); |
|
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1862 buf[n] = '\0'; |
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1863 return n; |
|
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|
1864 } |
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1865 return 0; |
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1866 } |
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1867 |
| 0 | 1868 // sun.misc.Signal |
| 1869 // NOTE that this is a workaround for an apparent kernel bug where if | |
| 1870 // a signal handler for SIGBREAK is installed then that signal handler | |
| 1871 // takes priority over the console control handler for CTRL_CLOSE_EVENT. | |
| 1872 // See bug 4416763. | |
| 1873 static void (*sigbreakHandler)(int) = NULL; | |
| 1874 | |
| 1875 static void UserHandler(int sig, void *siginfo, void *context) { | |
| 1876 os::signal_notify(sig); | |
| 1877 // We need to reinstate the signal handler each time... | |
| 1878 os::signal(sig, (void*)UserHandler); | |
| 1879 } | |
| 1880 | |
| 1881 void* os::user_handler() { | |
| 1882 return (void*) UserHandler; | |
| 1883 } | |
| 1884 | |
| 1885 void* os::signal(int signal_number, void* handler) { | |
| 1886 if ((signal_number == SIGBREAK) && (!ReduceSignalUsage)) { | |
| 1887 void (*oldHandler)(int) = sigbreakHandler; | |
| 1888 sigbreakHandler = (void (*)(int)) handler; | |
| 1889 return (void*) oldHandler; | |
| 1890 } else { | |
| 1891 return (void*)::signal(signal_number, (void (*)(int))handler); | |
| 1892 } | |
| 1893 } | |
| 1894 | |
| 1895 void os::signal_raise(int signal_number) { | |
| 1896 raise(signal_number); | |
| 1897 } | |
| 1898 | |
| 1899 // The Win32 C runtime library maps all console control events other than ^C | |
| 1900 // into SIGBREAK, which makes it impossible to distinguish ^BREAK from close, | |
| 1901 // logoff, and shutdown events. We therefore install our own console handler | |
| 1902 // that raises SIGTERM for the latter cases. | |
| 1903 // | |
| 1904 static BOOL WINAPI consoleHandler(DWORD event) { | |
| 1905 switch(event) { | |
| 1906 case CTRL_C_EVENT: | |
| 1907 if (is_error_reported()) { | |
| 1908 // Ctrl-C is pressed during error reporting, likely because the error | |
| 1909 // handler fails to abort. Let VM die immediately. | |
| 1910 os::die(); | |
| 1911 } | |
| 1912 | |
| 1913 os::signal_raise(SIGINT); | |
| 1914 return TRUE; | |
| 1915 break; | |
| 1916 case CTRL_BREAK_EVENT: | |
| 1917 if (sigbreakHandler != NULL) { | |
| 1918 (*sigbreakHandler)(SIGBREAK); | |
| 1919 } | |
| 1920 return TRUE; | |
| 1921 break; | |
| 1922 case CTRL_CLOSE_EVENT: | |
| 1923 case CTRL_LOGOFF_EVENT: | |
| 1924 case CTRL_SHUTDOWN_EVENT: | |
| 1925 os::signal_raise(SIGTERM); | |
| 1926 return TRUE; | |
| 1927 break; | |
| 1928 default: | |
| 1929 break; | |
| 1930 } | |
| 1931 return FALSE; | |
| 1932 } | |
| 1933 | |
| 1934 /* | |
| 1935 * The following code is moved from os.cpp for making this | |
| 1936 * code platform specific, which it is by its very nature. | |
| 1937 */ | |
| 1938 | |
| 1939 // Return maximum OS signal used + 1 for internal use only | |
| 1940 // Used as exit signal for signal_thread | |
| 1941 int os::sigexitnum_pd(){ | |
| 1942 return NSIG; | |
| 1943 } | |
| 1944 | |
| 1945 // a counter for each possible signal value, including signal_thread exit signal | |
| 1946 static volatile jint pending_signals[NSIG+1] = { 0 }; | |
| 1947 static HANDLE sig_sem; | |
| 1948 | |
| 1949 void os::signal_init_pd() { | |
| 1950 // Initialize signal structures | |
| 1951 memset((void*)pending_signals, 0, sizeof(pending_signals)); | |
| 1952 | |
| 1953 sig_sem = ::CreateSemaphore(NULL, 0, NSIG+1, NULL); | |
| 1954 | |
| 1955 // Programs embedding the VM do not want it to attempt to receive | |
| 1956 // events like CTRL_LOGOFF_EVENT, which are used to implement the | |
| 1957 // shutdown hooks mechanism introduced in 1.3. For example, when | |
| 1958 // the VM is run as part of a Windows NT service (i.e., a servlet | |
| 1959 // engine in a web server), the correct behavior is for any console | |
| 1960 // control handler to return FALSE, not TRUE, because the OS's | |
| 1961 // "final" handler for such events allows the process to continue if | |
| 1962 // it is a service (while terminating it if it is not a service). | |
| 1963 // To make this behavior uniform and the mechanism simpler, we | |
| 1964 // completely disable the VM's usage of these console events if -Xrs | |
| 1965 // (=ReduceSignalUsage) is specified. This means, for example, that | |
| 1966 // the CTRL-BREAK thread dump mechanism is also disabled in this | |
| 1967 // case. See bugs 4323062, 4345157, and related bugs. | |
| 1968 | |
| 1969 if (!ReduceSignalUsage) { | |
| 1970 // Add a CTRL-C handler | |
| 1971 SetConsoleCtrlHandler(consoleHandler, TRUE); | |
| 1972 } | |
| 1973 } | |
| 1974 | |
| 1975 void os::signal_notify(int signal_number) { | |
| 1976 BOOL ret; | |
| 1977 | |
| 1978 Atomic::inc(&pending_signals[signal_number]); | |
| 1979 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); | |
| 1980 assert(ret != 0, "ReleaseSemaphore() failed"); | |
| 1981 } | |
| 1982 | |
| 1983 static int check_pending_signals(bool wait_for_signal) { | |
| 1984 DWORD ret; | |
| 1985 while (true) { | |
| 1986 for (int i = 0; i < NSIG + 1; i++) { | |
| 1987 jint n = pending_signals[i]; | |
| 1988 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { | |
| 1989 return i; | |
| 1990 } | |
| 1991 } | |
| 1992 if (!wait_for_signal) { | |
| 1993 return -1; | |
| 1994 } | |
| 1995 | |
| 1996 JavaThread *thread = JavaThread::current(); | |
| 1997 | |
| 1998 ThreadBlockInVM tbivm(thread); | |
| 1999 | |
| 2000 bool threadIsSuspended; | |
| 2001 do { | |
| 2002 thread->set_suspend_equivalent(); | |
| 2003 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() | |
| 2004 ret = ::WaitForSingleObject(sig_sem, INFINITE); | |
| 2005 assert(ret == WAIT_OBJECT_0, "WaitForSingleObject() failed"); | |
| 2006 | |
| 2007 // were we externally suspended while we were waiting? | |
| 2008 threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); | |
| 2009 if (threadIsSuspended) { | |
| 2010 // | |
| 2011 // The semaphore has been incremented, but while we were waiting | |
| 2012 // another thread suspended us. We don't want to continue running | |
| 2013 // while suspended because that would surprise the thread that | |
| 2014 // suspended us. | |
| 2015 // | |
| 2016 ret = ::ReleaseSemaphore(sig_sem, 1, NULL); | |
| 2017 assert(ret != 0, "ReleaseSemaphore() failed"); | |
| 2018 | |
| 2019 thread->java_suspend_self(); | |
| 2020 } | |
| 2021 } while (threadIsSuspended); | |
| 2022 } | |
| 2023 } | |
| 2024 | |
| 2025 int os::signal_lookup() { | |
| 2026 return check_pending_signals(false); | |
| 2027 } | |
| 2028 | |
| 2029 int os::signal_wait() { | |
| 2030 return check_pending_signals(true); | |
| 2031 } | |
| 2032 | |
| 2033 // Implicit OS exception handling | |
| 2034 | |
| 2035 LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo, address handler) { | |
| 2036 JavaThread* thread = JavaThread::current(); | |
| 2037 // Save pc in thread | |
| 2038 #ifdef _M_IA64 | |
| 2039 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->StIIP); | |
| 2040 // Set pc to handler | |
| 2041 exceptionInfo->ContextRecord->StIIP = (DWORD64)handler; | |
| 2042 #elif _M_AMD64 | |
| 2043 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Rip); | |
| 2044 // Set pc to handler | |
| 2045 exceptionInfo->ContextRecord->Rip = (DWORD64)handler; | |
| 2046 #else | |
| 2047 thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Eip); | |
| 2048 // Set pc to handler | |
| 2049 exceptionInfo->ContextRecord->Eip = (LONG)handler; | |
| 2050 #endif | |
| 2051 | |
| 2052 // Continue the execution | |
| 2053 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2054 } | |
| 2055 | |
| 2056 | |
| 2057 // Used for PostMortemDump | |
| 2058 extern "C" void safepoints(); | |
| 2059 extern "C" void find(int x); | |
| 2060 extern "C" void events(); | |
| 2061 | |
| 2062 // According to Windows API documentation, an illegal instruction sequence should generate | |
| 2063 // the 0xC000001C exception code. However, real world experience shows that occasionnaly | |
| 2064 // the execution of an illegal instruction can generate the exception code 0xC000001E. This | |
| 2065 // seems to be an undocumented feature of Win NT 4.0 (and probably other Windows systems). | |
| 2066 | |
| 2067 #define EXCEPTION_ILLEGAL_INSTRUCTION_2 0xC000001E | |
| 2068 | |
| 2069 // From "Execution Protection in the Windows Operating System" draft 0.35 | |
| 2070 // Once a system header becomes available, the "real" define should be | |
| 2071 // included or copied here. | |
| 2072 #define EXCEPTION_INFO_EXEC_VIOLATION 0x08 | |
| 2073 | |
| 2074 #define def_excpt(val) #val, val | |
| 2075 | |
| 2076 struct siglabel { | |
| 2077 char *name; | |
| 2078 int number; | |
| 2079 }; | |
| 2080 | |
|
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2081 // All Visual C++ exceptions thrown from code generated by the Microsoft Visual |
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2082 // C++ compiler contain this error code. Because this is a compiler-generated |
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2083 // error, the code is not listed in the Win32 API header files. |
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2084 // The code is actually a cryptic mnemonic device, with the initial "E" |
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2085 // standing for "exception" and the final 3 bytes (0x6D7363) representing the |
|
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|
2086 // ASCII values of "msc". |
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2087 |
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2088 #define EXCEPTION_UNCAUGHT_CXX_EXCEPTION 0xE06D7363 |
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2089 |
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2090 |
| 0 | 2091 struct siglabel exceptlabels[] = { |
| 2092 def_excpt(EXCEPTION_ACCESS_VIOLATION), | |
| 2093 def_excpt(EXCEPTION_DATATYPE_MISALIGNMENT), | |
| 2094 def_excpt(EXCEPTION_BREAKPOINT), | |
| 2095 def_excpt(EXCEPTION_SINGLE_STEP), | |
| 2096 def_excpt(EXCEPTION_ARRAY_BOUNDS_EXCEEDED), | |
| 2097 def_excpt(EXCEPTION_FLT_DENORMAL_OPERAND), | |
| 2098 def_excpt(EXCEPTION_FLT_DIVIDE_BY_ZERO), | |
| 2099 def_excpt(EXCEPTION_FLT_INEXACT_RESULT), | |
| 2100 def_excpt(EXCEPTION_FLT_INVALID_OPERATION), | |
| 2101 def_excpt(EXCEPTION_FLT_OVERFLOW), | |
| 2102 def_excpt(EXCEPTION_FLT_STACK_CHECK), | |
| 2103 def_excpt(EXCEPTION_FLT_UNDERFLOW), | |
| 2104 def_excpt(EXCEPTION_INT_DIVIDE_BY_ZERO), | |
| 2105 def_excpt(EXCEPTION_INT_OVERFLOW), | |
| 2106 def_excpt(EXCEPTION_PRIV_INSTRUCTION), | |
| 2107 def_excpt(EXCEPTION_IN_PAGE_ERROR), | |
| 2108 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION), | |
| 2109 def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION_2), | |
| 2110 def_excpt(EXCEPTION_NONCONTINUABLE_EXCEPTION), | |
| 2111 def_excpt(EXCEPTION_STACK_OVERFLOW), | |
| 2112 def_excpt(EXCEPTION_INVALID_DISPOSITION), | |
| 2113 def_excpt(EXCEPTION_GUARD_PAGE), | |
| 2114 def_excpt(EXCEPTION_INVALID_HANDLE), | |
|
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2115 def_excpt(EXCEPTION_UNCAUGHT_CXX_EXCEPTION), |
| 0 | 2116 NULL, 0 |
| 2117 }; | |
| 2118 | |
| 2119 const char* os::exception_name(int exception_code, char *buf, size_t size) { | |
| 2120 for (int i = 0; exceptlabels[i].name != NULL; i++) { | |
| 2121 if (exceptlabels[i].number == exception_code) { | |
| 2122 jio_snprintf(buf, size, "%s", exceptlabels[i].name); | |
| 2123 return buf; | |
| 2124 } | |
| 2125 } | |
| 2126 | |
| 2127 return NULL; | |
| 2128 } | |
| 2129 | |
| 2130 //----------------------------------------------------------------------------- | |
| 2131 LONG Handle_IDiv_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
| 2132 // handle exception caused by idiv; should only happen for -MinInt/-1 | |
| 2133 // (division by zero is handled explicitly) | |
| 2134 #ifdef _M_IA64 | |
| 2135 assert(0, "Fix Handle_IDiv_Exception"); | |
| 2136 #elif _M_AMD64 | |
| 2137 PCONTEXT ctx = exceptionInfo->ContextRecord; | |
| 2138 address pc = (address)ctx->Rip; | |
| 2139 NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc)); | |
| 2140 assert(pc[0] == 0xF7, "not an idiv opcode"); | |
| 2141 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); | |
| 2142 assert(ctx->Rax == min_jint, "unexpected idiv exception"); | |
| 2143 // set correct result values and continue after idiv instruction | |
| 2144 ctx->Rip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes | |
| 2145 ctx->Rax = (DWORD)min_jint; // result | |
| 2146 ctx->Rdx = (DWORD)0; // remainder | |
| 2147 // Continue the execution | |
| 2148 #else | |
| 2149 PCONTEXT ctx = exceptionInfo->ContextRecord; | |
| 2150 address pc = (address)ctx->Eip; | |
| 2151 NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc)); | |
| 2152 assert(pc[0] == 0xF7, "not an idiv opcode"); | |
| 2153 assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands"); | |
| 2154 assert(ctx->Eax == min_jint, "unexpected idiv exception"); | |
| 2155 // set correct result values and continue after idiv instruction | |
| 2156 ctx->Eip = (DWORD)pc + 2; // idiv reg, reg is 2 bytes | |
| 2157 ctx->Eax = (DWORD)min_jint; // result | |
| 2158 ctx->Edx = (DWORD)0; // remainder | |
| 2159 // Continue the execution | |
| 2160 #endif | |
| 2161 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2162 } | |
| 2163 | |
| 2164 #ifndef _WIN64 | |
| 2165 //----------------------------------------------------------------------------- | |
| 2166 LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
|
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2167 // handle exception caused by native method modifying control word |
| 0 | 2168 PCONTEXT ctx = exceptionInfo->ContextRecord; |
| 2169 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
| 2170 | |
| 2171 switch (exception_code) { | |
| 2172 case EXCEPTION_FLT_DENORMAL_OPERAND: | |
| 2173 case EXCEPTION_FLT_DIVIDE_BY_ZERO: | |
| 2174 case EXCEPTION_FLT_INEXACT_RESULT: | |
| 2175 case EXCEPTION_FLT_INVALID_OPERATION: | |
| 2176 case EXCEPTION_FLT_OVERFLOW: | |
| 2177 case EXCEPTION_FLT_STACK_CHECK: | |
| 2178 case EXCEPTION_FLT_UNDERFLOW: | |
| 2179 jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std()); | |
| 2180 if (fp_control_word != ctx->FloatSave.ControlWord) { | |
| 2181 // Restore FPCW and mask out FLT exceptions | |
| 2182 ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0; | |
| 2183 // Mask out pending FLT exceptions | |
| 2184 ctx->FloatSave.StatusWord &= 0xffffff00; | |
| 2185 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2186 } | |
| 2187 } | |
|
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2188 |
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2189 if (prev_uef_handler != NULL) { |
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2190 // We didn't handle this exception so pass it to the previous |
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2191 // UnhandledExceptionFilter. |
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2192 return (prev_uef_handler)(exceptionInfo); |
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2193 } |
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2194 |
| 0 | 2195 return EXCEPTION_CONTINUE_SEARCH; |
| 2196 } | |
| 2197 #else //_WIN64 | |
| 2198 /* | |
| 2199 On Windows, the mxcsr control bits are non-volatile across calls | |
| 2200 See also CR 6192333 | |
| 2201 If EXCEPTION_FLT_* happened after some native method modified | |
| 2202 mxcsr - it is not a jvm fault. | |
| 2203 However should we decide to restore of mxcsr after a faulty | |
| 2204 native method we can uncomment following code | |
| 2205 jint MxCsr = INITIAL_MXCSR; | |
| 2206 // we can't use StubRoutines::addr_mxcsr_std() | |
| 2207 // because in Win64 mxcsr is not saved there | |
| 2208 if (MxCsr != ctx->MxCsr) { | |
| 2209 ctx->MxCsr = MxCsr; | |
| 2210 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2211 } | |
| 2212 | |
| 2213 */ | |
| 2214 #endif //_WIN64 | |
| 2215 | |
| 2216 | |
| 2217 // Fatal error reporting is single threaded so we can make this a | |
| 2218 // static and preallocated. If it's more than MAX_PATH silently ignore | |
| 2219 // it. | |
| 2220 static char saved_error_file[MAX_PATH] = {0}; | |
| 2221 | |
| 2222 void os::set_error_file(const char *logfile) { | |
| 2223 if (strlen(logfile) <= MAX_PATH) { | |
| 2224 strncpy(saved_error_file, logfile, MAX_PATH); | |
| 2225 } | |
| 2226 } | |
| 2227 | |
| 2228 static inline void report_error(Thread* t, DWORD exception_code, | |
| 2229 address addr, void* siginfo, void* context) { | |
| 2230 VMError err(t, exception_code, addr, siginfo, context); | |
| 2231 err.report_and_die(); | |
| 2232 | |
| 2233 // If UseOsErrorReporting, this will return here and save the error file | |
| 2234 // somewhere where we can find it in the minidump. | |
| 2235 } | |
| 2236 | |
| 2237 //----------------------------------------------------------------------------- | |
| 2238 LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
| 2239 if (InterceptOSException) return EXCEPTION_CONTINUE_SEARCH; | |
| 2240 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
| 2241 #ifdef _M_IA64 | |
| 2242 address pc = (address) exceptionInfo->ContextRecord->StIIP; | |
| 2243 #elif _M_AMD64 | |
| 2244 address pc = (address) exceptionInfo->ContextRecord->Rip; | |
| 2245 #else | |
| 2246 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
| 2247 #endif | |
| 2248 Thread* t = ThreadLocalStorage::get_thread_slow(); // slow & steady | |
| 2249 | |
| 2250 #ifndef _WIN64 | |
| 2251 // Execution protection violation - win32 running on AMD64 only | |
| 2252 // Handled first to avoid misdiagnosis as a "normal" access violation; | |
| 2253 // This is safe to do because we have a new/unique ExceptionInformation | |
| 2254 // code for this condition. | |
| 2255 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
| 2256 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
| 2257 int exception_subcode = (int) exceptionRecord->ExceptionInformation[0]; | |
| 2258 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
| 2259 | |
| 2260 if (exception_subcode == EXCEPTION_INFO_EXEC_VIOLATION) { | |
| 2261 int page_size = os::vm_page_size(); | |
| 2262 | |
| 2263 // Make sure the pc and the faulting address are sane. | |
| 2264 // | |
| 2265 // If an instruction spans a page boundary, and the page containing | |
| 2266 // the beginning of the instruction is executable but the following | |
| 2267 // page is not, the pc and the faulting address might be slightly | |
| 2268 // different - we still want to unguard the 2nd page in this case. | |
| 2269 // | |
| 2270 // 15 bytes seems to be a (very) safe value for max instruction size. | |
| 2271 bool pc_is_near_addr = | |
| 2272 (pointer_delta((void*) addr, (void*) pc, sizeof(char)) < 15); | |
| 2273 bool instr_spans_page_boundary = | |
| 2274 (align_size_down((intptr_t) pc ^ (intptr_t) addr, | |
| 2275 (intptr_t) page_size) > 0); | |
| 2276 | |
| 2277 if (pc == addr || (pc_is_near_addr && instr_spans_page_boundary)) { | |
| 2278 static volatile address last_addr = | |
| 2279 (address) os::non_memory_address_word(); | |
| 2280 | |
| 2281 // In conservative mode, don't unguard unless the address is in the VM | |
| 2282 if (UnguardOnExecutionViolation > 0 && addr != last_addr && | |
| 2283 (UnguardOnExecutionViolation > 1 || os::address_is_in_vm(addr))) { | |
| 2284 | |
|
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2285 // Set memory to RWX and retry |
| 0 | 2286 address page_start = |
| 2287 (address) align_size_down((intptr_t) addr, (intptr_t) page_size); | |
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2288 bool res = os::protect_memory((char*) page_start, page_size, |
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2289 os::MEM_PROT_RWX); |
| 0 | 2290 |
| 2291 if (PrintMiscellaneous && Verbose) { | |
| 2292 char buf[256]; | |
| 2293 jio_snprintf(buf, sizeof(buf), "Execution protection violation " | |
| 2294 "at " INTPTR_FORMAT | |
| 2295 ", unguarding " INTPTR_FORMAT ": %s", addr, | |
| 2296 page_start, (res ? "success" : strerror(errno))); | |
| 2297 tty->print_raw_cr(buf); | |
| 2298 } | |
| 2299 | |
| 2300 // Set last_addr so if we fault again at the same address, we don't | |
| 2301 // end up in an endless loop. | |
| 2302 // | |
| 2303 // There are two potential complications here. Two threads trapping | |
| 2304 // at the same address at the same time could cause one of the | |
| 2305 // threads to think it already unguarded, and abort the VM. Likely | |
| 2306 // very rare. | |
| 2307 // | |
| 2308 // The other race involves two threads alternately trapping at | |
| 2309 // different addresses and failing to unguard the page, resulting in | |
| 2310 // an endless loop. This condition is probably even more unlikely | |
| 2311 // than the first. | |
| 2312 // | |
| 2313 // Although both cases could be avoided by using locks or thread | |
| 2314 // local last_addr, these solutions are unnecessary complication: | |
| 2315 // this handler is a best-effort safety net, not a complete solution. | |
| 2316 // It is disabled by default and should only be used as a workaround | |
| 2317 // in case we missed any no-execute-unsafe VM code. | |
| 2318 | |
| 2319 last_addr = addr; | |
| 2320 | |
| 2321 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2322 } | |
| 2323 } | |
| 2324 | |
| 2325 // Last unguard failed or not unguarding | |
| 2326 tty->print_raw_cr("Execution protection violation"); | |
| 2327 report_error(t, exception_code, addr, exceptionInfo->ExceptionRecord, | |
| 2328 exceptionInfo->ContextRecord); | |
| 2329 return EXCEPTION_CONTINUE_SEARCH; | |
| 2330 } | |
| 2331 } | |
| 2332 #endif // _WIN64 | |
| 2333 | |
| 2334 // Check to see if we caught the safepoint code in the | |
| 2335 // process of write protecting the memory serialization page. | |
| 2336 // It write enables the page immediately after protecting it | |
| 2337 // so just return. | |
| 2338 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
| 2339 JavaThread* thread = (JavaThread*) t; | |
| 2340 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
| 2341 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
| 2342 if ( os::is_memory_serialize_page(thread, addr) ) { | |
| 2343 // Block current thread until the memory serialize page permission restored. | |
| 2344 os::block_on_serialize_page_trap(); | |
| 2345 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2346 } | |
| 2347 } | |
| 2348 | |
| 2349 if (t != NULL && t->is_Java_thread()) { | |
| 2350 JavaThread* thread = (JavaThread*) t; | |
| 2351 bool in_java = thread->thread_state() == _thread_in_Java; | |
| 2352 | |
| 2353 // Handle potential stack overflows up front. | |
| 2354 if (exception_code == EXCEPTION_STACK_OVERFLOW) { | |
| 2355 if (os::uses_stack_guard_pages()) { | |
| 2356 #ifdef _M_IA64 | |
| 2357 // | |
| 2358 // If it's a legal stack address continue, Windows will map it in. | |
| 2359 // | |
| 2360 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
| 2361 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
| 2362 if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) | |
| 2363 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2364 | |
| 2365 // The register save area is the same size as the memory stack | |
| 2366 // and starts at the page just above the start of the memory stack. | |
| 2367 // If we get a fault in this area, we've run out of register | |
| 2368 // stack. If we are in java, try throwing a stack overflow exception. | |
| 2369 if (addr > thread->stack_base() && | |
| 2370 addr <= (thread->stack_base()+thread->stack_size()) ) { | |
| 2371 char buf[256]; | |
| 2372 jio_snprintf(buf, sizeof(buf), | |
| 2373 "Register stack overflow, addr:%p, stack_base:%p\n", | |
| 2374 addr, thread->stack_base() ); | |
| 2375 tty->print_raw_cr(buf); | |
| 2376 // If not in java code, return and hope for the best. | |
| 2377 return in_java ? Handle_Exception(exceptionInfo, | |
| 2378 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) | |
| 2379 : EXCEPTION_CONTINUE_EXECUTION; | |
| 2380 } | |
| 2381 #endif | |
| 2382 if (thread->stack_yellow_zone_enabled()) { | |
| 2383 // Yellow zone violation. The o/s has unprotected the first yellow | |
| 2384 // zone page for us. Note: must call disable_stack_yellow_zone to | |
| 2385 // update the enabled status, even if the zone contains only one page. | |
| 2386 thread->disable_stack_yellow_zone(); | |
| 2387 // If not in java code, return and hope for the best. | |
| 2388 return in_java ? Handle_Exception(exceptionInfo, | |
| 2389 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)) | |
| 2390 : EXCEPTION_CONTINUE_EXECUTION; | |
| 2391 } else { | |
| 2392 // Fatal red zone violation. | |
| 2393 thread->disable_stack_red_zone(); | |
| 2394 tty->print_raw_cr("An unrecoverable stack overflow has occurred."); | |
| 2395 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
| 2396 exceptionInfo->ContextRecord); | |
| 2397 return EXCEPTION_CONTINUE_SEARCH; | |
| 2398 } | |
| 2399 } else if (in_java) { | |
| 2400 // JVM-managed guard pages cannot be used on win95/98. The o/s provides | |
| 2401 // a one-time-only guard page, which it has released to us. The next | |
| 2402 // stack overflow on this thread will result in an ACCESS_VIOLATION. | |
| 2403 return Handle_Exception(exceptionInfo, | |
| 2404 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
| 2405 } else { | |
| 2406 // Can only return and hope for the best. Further stack growth will | |
| 2407 // result in an ACCESS_VIOLATION. | |
| 2408 return EXCEPTION_CONTINUE_EXECUTION; | |
| 2409 } | |
| 2410 } else if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
| 2411 // Either stack overflow or null pointer exception. | |
| 2412 if (in_java) { | |
| 2413 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
| 2414 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
| 2415 address stack_end = thread->stack_base() - thread->stack_size(); | |
| 2416 if (addr < stack_end && addr >= stack_end - os::vm_page_size()) { | |
| 2417 // Stack overflow. | |
| 2418 assert(!os::uses_stack_guard_pages(), | |
| 2419 "should be caught by red zone code above."); | |
| 2420 return Handle_Exception(exceptionInfo, | |
| 2421 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
| 2422 } | |
| 2423 // | |
| 2424 // Check for safepoint polling and implicit null | |
| 2425 // We only expect null pointers in the stubs (vtable) | |
| 2426 // the rest are checked explicitly now. | |
| 2427 // | |
| 2428 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2429 if (cb != NULL) { | |
| 2430 if (os::is_poll_address(addr)) { | |
| 2431 address stub = SharedRuntime::get_poll_stub(pc); | |
| 2432 return Handle_Exception(exceptionInfo, stub); | |
| 2433 } | |
| 2434 } | |
| 2435 { | |
| 2436 #ifdef _WIN64 | |
| 2437 // | |
| 2438 // If it's a legal stack address map the entire region in | |
| 2439 // | |
| 2440 PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; | |
| 2441 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
| 2442 if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) { | |
| 2443 addr = (address)((uintptr_t)addr & | |
| 2444 (~((uintptr_t)os::vm_page_size() - (uintptr_t)1))); | |
| 656 | 2445 os::commit_memory((char *)addr, thread->stack_base() - addr, |
| 2446 false ); | |
| 0 | 2447 return EXCEPTION_CONTINUE_EXECUTION; |
| 2448 } | |
| 2449 else | |
| 2450 #endif | |
| 2451 { | |
| 2452 // Null pointer exception. | |
| 2453 #ifdef _M_IA64 | |
| 2454 // We catch register stack overflows in compiled code by doing | |
| 2455 // an explicit compare and executing a st8(G0, G0) if the | |
| 2456 // BSP enters into our guard area. We test for the overflow | |
| 2457 // condition and fall into the normal null pointer exception | |
| 2458 // code if BSP hasn't overflowed. | |
| 2459 if ( in_java ) { | |
| 2460 if(thread->register_stack_overflow()) { | |
| 2461 assert((address)exceptionInfo->ContextRecord->IntS3 == | |
| 2462 thread->register_stack_limit(), | |
| 2463 "GR7 doesn't contain register_stack_limit"); | |
| 2464 // Disable the yellow zone which sets the state that | |
| 2465 // we've got a stack overflow problem. | |
| 2466 if (thread->stack_yellow_zone_enabled()) { | |
| 2467 thread->disable_stack_yellow_zone(); | |
| 2468 } | |
| 2469 // Give us some room to process the exception | |
| 2470 thread->disable_register_stack_guard(); | |
| 2471 // Update GR7 with the new limit so we can continue running | |
| 2472 // compiled code. | |
| 2473 exceptionInfo->ContextRecord->IntS3 = | |
| 2474 (ULONGLONG)thread->register_stack_limit(); | |
| 2475 return Handle_Exception(exceptionInfo, | |
| 2476 SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW)); | |
| 2477 } else { | |
| 2478 // | |
| 2479 // Check for implicit null | |
| 2480 // We only expect null pointers in the stubs (vtable) | |
| 2481 // the rest are checked explicitly now. | |
| 2482 // | |
|
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2483 if (((uintptr_t)addr) < os::vm_page_size() ) { |
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2484 // an access to the first page of VM--assume it is a null pointer |
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2485 address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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2486 if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
| 0 | 2487 } |
| 2488 } | |
| 2489 } // in_java | |
| 2490 | |
| 2491 // IA64 doesn't use implicit null checking yet. So we shouldn't | |
| 2492 // get here. | |
| 2493 tty->print_raw_cr("Access violation, possible null pointer exception"); | |
| 2494 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
| 2495 exceptionInfo->ContextRecord); | |
| 2496 return EXCEPTION_CONTINUE_SEARCH; | |
| 2497 #else /* !IA64 */ | |
| 2498 | |
| 2499 // Windows 98 reports faulting addresses incorrectly | |
| 2500 if (!MacroAssembler::needs_explicit_null_check((intptr_t)addr) || | |
| 2501 !os::win32::is_nt()) { | |
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2502 address stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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2503 if (stub != NULL) return Handle_Exception(exceptionInfo, stub); |
| 0 | 2504 } |
| 2505 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
| 2506 exceptionInfo->ContextRecord); | |
| 2507 return EXCEPTION_CONTINUE_SEARCH; | |
| 2508 #endif | |
| 2509 } | |
| 2510 } | |
| 2511 } | |
| 2512 | |
| 2513 #ifdef _WIN64 | |
| 2514 // Special care for fast JNI field accessors. | |
| 2515 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks | |
| 2516 // in and the heap gets shrunk before the field access. | |
| 2517 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
| 2518 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
| 2519 if (addr != (address)-1) { | |
| 2520 return Handle_Exception(exceptionInfo, addr); | |
| 2521 } | |
| 2522 } | |
| 2523 #endif | |
| 2524 | |
| 2525 #ifdef _WIN64 | |
| 2526 // Windows will sometimes generate an access violation | |
| 2527 // when we call malloc. Since we use VectoredExceptions | |
| 2528 // on 64 bit platforms, we see this exception. We must | |
| 2529 // pass this exception on so Windows can recover. | |
| 2530 // We check to see if the pc of the fault is in NTDLL.DLL | |
| 2531 // if so, we pass control on to Windows for handling. | |
| 2532 if (UseVectoredExceptions && _addr_in_ntdll(pc)) return EXCEPTION_CONTINUE_SEARCH; | |
| 2533 #endif | |
| 2534 | |
| 2535 // Stack overflow or null pointer exception in native code. | |
| 2536 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
| 2537 exceptionInfo->ContextRecord); | |
| 2538 return EXCEPTION_CONTINUE_SEARCH; | |
| 2539 } | |
| 2540 | |
| 2541 if (in_java) { | |
| 2542 switch (exception_code) { | |
| 2543 case EXCEPTION_INT_DIVIDE_BY_ZERO: | |
| 2544 return Handle_Exception(exceptionInfo, SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO)); | |
| 2545 | |
| 2546 case EXCEPTION_INT_OVERFLOW: | |
| 2547 return Handle_IDiv_Exception(exceptionInfo); | |
| 2548 | |
| 2549 } // switch | |
| 2550 } | |
| 2551 #ifndef _WIN64 | |
|
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2552 if (((thread->thread_state() == _thread_in_Java) || |
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2553 (thread->thread_state() == _thread_in_native)) && |
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2554 exception_code != EXCEPTION_UNCAUGHT_CXX_EXCEPTION) |
| 0 | 2555 { |
| 2556 LONG result=Handle_FLT_Exception(exceptionInfo); | |
| 2557 if (result==EXCEPTION_CONTINUE_EXECUTION) return result; | |
| 2558 } | |
| 2559 #endif //_WIN64 | |
| 2560 } | |
| 2561 | |
| 2562 if (exception_code != EXCEPTION_BREAKPOINT) { | |
| 2563 #ifndef _WIN64 | |
| 2564 report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, | |
| 2565 exceptionInfo->ContextRecord); | |
| 2566 #else | |
| 2567 // Itanium Windows uses a VectoredExceptionHandler | |
| 2568 // Which means that C++ programatic exception handlers (try/except) | |
| 2569 // will get here. Continue the search for the right except block if | |
| 2570 // the exception code is not a fatal code. | |
| 2571 switch ( exception_code ) { | |
| 2572 case EXCEPTION_ACCESS_VIOLATION: | |
| 2573 case EXCEPTION_STACK_OVERFLOW: | |
| 2574 case EXCEPTION_ILLEGAL_INSTRUCTION: | |
| 2575 case EXCEPTION_ILLEGAL_INSTRUCTION_2: | |
| 2576 case EXCEPTION_INT_OVERFLOW: | |
| 2577 case EXCEPTION_INT_DIVIDE_BY_ZERO: | |
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2578 case EXCEPTION_UNCAUGHT_CXX_EXCEPTION: |
| 0 | 2579 { report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord, |
| 2580 exceptionInfo->ContextRecord); | |
| 2581 } | |
| 2582 break; | |
| 2583 default: | |
| 2584 break; | |
| 2585 } | |
| 2586 #endif | |
| 2587 } | |
| 2588 return EXCEPTION_CONTINUE_SEARCH; | |
| 2589 } | |
| 2590 | |
| 2591 #ifndef _WIN64 | |
| 2592 // Special care for fast JNI accessors. | |
| 2593 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in and | |
| 2594 // the heap gets shrunk before the field access. | |
| 2595 // Need to install our own structured exception handler since native code may | |
| 2596 // install its own. | |
| 2597 LONG WINAPI fastJNIAccessorExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) { | |
| 2598 DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode; | |
| 2599 if (exception_code == EXCEPTION_ACCESS_VIOLATION) { | |
| 2600 address pc = (address) exceptionInfo->ContextRecord->Eip; | |
| 2601 address addr = JNI_FastGetField::find_slowcase_pc(pc); | |
| 2602 if (addr != (address)-1) { | |
| 2603 return Handle_Exception(exceptionInfo, addr); | |
| 2604 } | |
| 2605 } | |
| 2606 return EXCEPTION_CONTINUE_SEARCH; | |
| 2607 } | |
| 2608 | |
| 2609 #define DEFINE_FAST_GETFIELD(Return,Fieldname,Result) \ | |
| 2610 Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, jobject obj, jfieldID fieldID) { \ | |
| 2611 __try { \ | |
| 2612 return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, obj, fieldID); \ | |
| 2613 } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { \ | |
| 2614 } \ | |
| 2615 return 0; \ | |
| 2616 } | |
| 2617 | |
| 2618 DEFINE_FAST_GETFIELD(jboolean, bool, Boolean) | |
| 2619 DEFINE_FAST_GETFIELD(jbyte, byte, Byte) | |
| 2620 DEFINE_FAST_GETFIELD(jchar, char, Char) | |
| 2621 DEFINE_FAST_GETFIELD(jshort, short, Short) | |
| 2622 DEFINE_FAST_GETFIELD(jint, int, Int) | |
| 2623 DEFINE_FAST_GETFIELD(jlong, long, Long) | |
| 2624 DEFINE_FAST_GETFIELD(jfloat, float, Float) | |
| 2625 DEFINE_FAST_GETFIELD(jdouble, double, Double) | |
| 2626 | |
| 2627 address os::win32::fast_jni_accessor_wrapper(BasicType type) { | |
| 2628 switch (type) { | |
| 2629 case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper; | |
| 2630 case T_BYTE: return (address)jni_fast_GetByteField_wrapper; | |
| 2631 case T_CHAR: return (address)jni_fast_GetCharField_wrapper; | |
| 2632 case T_SHORT: return (address)jni_fast_GetShortField_wrapper; | |
| 2633 case T_INT: return (address)jni_fast_GetIntField_wrapper; | |
| 2634 case T_LONG: return (address)jni_fast_GetLongField_wrapper; | |
| 2635 case T_FLOAT: return (address)jni_fast_GetFloatField_wrapper; | |
| 2636 case T_DOUBLE: return (address)jni_fast_GetDoubleField_wrapper; | |
| 2637 default: ShouldNotReachHere(); | |
| 2638 } | |
| 2639 return (address)-1; | |
| 2640 } | |
| 2641 #endif | |
| 2642 | |
| 2643 // Virtual Memory | |
| 2644 | |
| 2645 int os::vm_page_size() { return os::win32::vm_page_size(); } | |
| 2646 int os::vm_allocation_granularity() { | |
| 2647 return os::win32::vm_allocation_granularity(); | |
| 2648 } | |
| 2649 | |
| 2650 // Windows large page support is available on Windows 2003. In order to use | |
| 2651 // large page memory, the administrator must first assign additional privilege | |
| 2652 // to the user: | |
| 2653 // + select Control Panel -> Administrative Tools -> Local Security Policy | |
| 2654 // + select Local Policies -> User Rights Assignment | |
| 2655 // + double click "Lock pages in memory", add users and/or groups | |
| 2656 // + reboot | |
| 2657 // Note the above steps are needed for administrator as well, as administrators | |
| 2658 // by default do not have the privilege to lock pages in memory. | |
| 2659 // | |
| 2660 // Note about Windows 2003: although the API supports committing large page | |
| 2661 // memory on a page-by-page basis and VirtualAlloc() returns success under this | |
| 2662 // scenario, I found through experiment it only uses large page if the entire | |
| 2663 // memory region is reserved and committed in a single VirtualAlloc() call. | |
| 2664 // This makes Windows large page support more or less like Solaris ISM, in | |
| 2665 // that the entire heap must be committed upfront. This probably will change | |
| 2666 // in the future, if so the code below needs to be revisited. | |
| 2667 | |
| 2668 #ifndef MEM_LARGE_PAGES | |
| 2669 #define MEM_LARGE_PAGES 0x20000000 | |
| 2670 #endif | |
| 2671 | |
| 2672 // GetLargePageMinimum is only available on Windows 2003. The other functions | |
| 2673 // are available on NT but not on Windows 98/Me. We have to resolve them at | |
| 2674 // runtime. | |
| 2675 typedef SIZE_T (WINAPI *GetLargePageMinimum_func_type) (void); | |
| 2676 typedef BOOL (WINAPI *AdjustTokenPrivileges_func_type) | |
| 2677 (HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); | |
| 2678 typedef BOOL (WINAPI *OpenProcessToken_func_type) (HANDLE, DWORD, PHANDLE); | |
| 2679 typedef BOOL (WINAPI *LookupPrivilegeValue_func_type) (LPCTSTR, LPCTSTR, PLUID); | |
| 2680 | |
| 2681 static GetLargePageMinimum_func_type _GetLargePageMinimum; | |
| 2682 static AdjustTokenPrivileges_func_type _AdjustTokenPrivileges; | |
| 2683 static OpenProcessToken_func_type _OpenProcessToken; | |
| 2684 static LookupPrivilegeValue_func_type _LookupPrivilegeValue; | |
| 2685 | |
| 2686 static HINSTANCE _kernel32; | |
| 2687 static HINSTANCE _advapi32; | |
| 2688 static HANDLE _hProcess; | |
| 2689 static HANDLE _hToken; | |
| 2690 | |
| 2691 static size_t _large_page_size = 0; | |
| 2692 | |
| 2693 static bool resolve_functions_for_large_page_init() { | |
| 2694 _kernel32 = LoadLibrary("kernel32.dll"); | |
| 2695 if (_kernel32 == NULL) return false; | |
| 2696 | |
| 2697 _GetLargePageMinimum = CAST_TO_FN_PTR(GetLargePageMinimum_func_type, | |
| 2698 GetProcAddress(_kernel32, "GetLargePageMinimum")); | |
| 2699 if (_GetLargePageMinimum == NULL) return false; | |
| 2700 | |
| 2701 _advapi32 = LoadLibrary("advapi32.dll"); | |
| 2702 if (_advapi32 == NULL) return false; | |
| 2703 | |
| 2704 _AdjustTokenPrivileges = CAST_TO_FN_PTR(AdjustTokenPrivileges_func_type, | |
| 2705 GetProcAddress(_advapi32, "AdjustTokenPrivileges")); | |
| 2706 _OpenProcessToken = CAST_TO_FN_PTR(OpenProcessToken_func_type, | |
| 2707 GetProcAddress(_advapi32, "OpenProcessToken")); | |
| 2708 _LookupPrivilegeValue = CAST_TO_FN_PTR(LookupPrivilegeValue_func_type, | |
| 2709 GetProcAddress(_advapi32, "LookupPrivilegeValueA")); | |
| 2710 return _AdjustTokenPrivileges != NULL && | |
| 2711 _OpenProcessToken != NULL && | |
| 2712 _LookupPrivilegeValue != NULL; | |
| 2713 } | |
| 2714 | |
| 2715 static bool request_lock_memory_privilege() { | |
| 2716 _hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, | |
| 2717 os::current_process_id()); | |
| 2718 | |
| 2719 LUID luid; | |
| 2720 if (_hProcess != NULL && | |
| 2721 _OpenProcessToken(_hProcess, TOKEN_ADJUST_PRIVILEGES, &_hToken) && | |
| 2722 _LookupPrivilegeValue(NULL, "SeLockMemoryPrivilege", &luid)) { | |
| 2723 | |
| 2724 TOKEN_PRIVILEGES tp; | |
| 2725 tp.PrivilegeCount = 1; | |
| 2726 tp.Privileges[0].Luid = luid; | |
| 2727 tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; | |
| 2728 | |
| 2729 // AdjustTokenPrivileges() may return TRUE even when it couldn't change the | |
| 2730 // privilege. Check GetLastError() too. See MSDN document. | |
| 2731 if (_AdjustTokenPrivileges(_hToken, false, &tp, sizeof(tp), NULL, NULL) && | |
| 2732 (GetLastError() == ERROR_SUCCESS)) { | |
| 2733 return true; | |
| 2734 } | |
| 2735 } | |
| 2736 | |
| 2737 return false; | |
| 2738 } | |
| 2739 | |
| 2740 static void cleanup_after_large_page_init() { | |
| 2741 _GetLargePageMinimum = NULL; | |
| 2742 _AdjustTokenPrivileges = NULL; | |
| 2743 _OpenProcessToken = NULL; | |
| 2744 _LookupPrivilegeValue = NULL; | |
| 2745 if (_kernel32) FreeLibrary(_kernel32); | |
| 2746 _kernel32 = NULL; | |
| 2747 if (_advapi32) FreeLibrary(_advapi32); | |
| 2748 _advapi32 = NULL; | |
| 2749 if (_hProcess) CloseHandle(_hProcess); | |
| 2750 _hProcess = NULL; | |
| 2751 if (_hToken) CloseHandle(_hToken); | |
| 2752 _hToken = NULL; | |
| 2753 } | |
| 2754 | |
| 2755 bool os::large_page_init() { | |
| 2756 if (!UseLargePages) return false; | |
| 2757 | |
| 2758 // print a warning if any large page related flag is specified on command line | |
| 2759 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || | |
| 2760 !FLAG_IS_DEFAULT(LargePageSizeInBytes); | |
| 2761 bool success = false; | |
| 2762 | |
| 2763 # define WARN(msg) if (warn_on_failure) { warning(msg); } | |
| 2764 if (resolve_functions_for_large_page_init()) { | |
| 2765 if (request_lock_memory_privilege()) { | |
| 2766 size_t s = _GetLargePageMinimum(); | |
| 2767 if (s) { | |
| 2768 #if defined(IA32) || defined(AMD64) | |
| 2769 if (s > 4*M || LargePageSizeInBytes > 4*M) { | |
| 2770 WARN("JVM cannot use large pages bigger than 4mb."); | |
| 2771 } else { | |
| 2772 #endif | |
| 2773 if (LargePageSizeInBytes && LargePageSizeInBytes % s == 0) { | |
| 2774 _large_page_size = LargePageSizeInBytes; | |
| 2775 } else { | |
| 2776 _large_page_size = s; | |
| 2777 } | |
| 2778 success = true; | |
| 2779 #if defined(IA32) || defined(AMD64) | |
| 2780 } | |
| 2781 #endif | |
| 2782 } else { | |
| 2783 WARN("Large page is not supported by the processor."); | |
| 2784 } | |
| 2785 } else { | |
| 2786 WARN("JVM cannot use large page memory because it does not have enough privilege to lock pages in memory."); | |
| 2787 } | |
| 2788 } else { | |
| 2789 WARN("Large page is not supported by the operating system."); | |
| 2790 } | |
| 2791 #undef WARN | |
| 2792 | |
| 2793 const size_t default_page_size = (size_t) vm_page_size(); | |
| 2794 if (success && _large_page_size > default_page_size) { | |
| 2795 _page_sizes[0] = _large_page_size; | |
| 2796 _page_sizes[1] = default_page_size; | |
| 2797 _page_sizes[2] = 0; | |
| 2798 } | |
| 2799 | |
| 2800 cleanup_after_large_page_init(); | |
| 2801 return success; | |
| 2802 } | |
| 2803 | |
| 2804 // On win32, one cannot release just a part of reserved memory, it's an | |
| 2805 // all or nothing deal. When we split a reservation, we must break the | |
| 2806 // reservation into two reservations. | |
| 2807 void os::split_reserved_memory(char *base, size_t size, size_t split, | |
| 2808 bool realloc) { | |
| 2809 if (size > 0) { | |
| 2810 release_memory(base, size); | |
| 2811 if (realloc) { | |
| 2812 reserve_memory(split, base); | |
| 2813 } | |
| 2814 if (size != split) { | |
| 2815 reserve_memory(size - split, base + split); | |
| 2816 } | |
| 2817 } | |
| 2818 } | |
| 2819 | |
| 2820 char* os::reserve_memory(size_t bytes, char* addr, size_t alignment_hint) { | |
| 2821 assert((size_t)addr % os::vm_allocation_granularity() == 0, | |
| 2822 "reserve alignment"); | |
| 2823 assert(bytes % os::vm_allocation_granularity() == 0, "reserve block size"); | |
| 656 | 2824 char* res = (char*)VirtualAlloc(addr, bytes, MEM_RESERVE, PAGE_READWRITE); |
| 0 | 2825 assert(res == NULL || addr == NULL || addr == res, |
| 2826 "Unexpected address from reserve."); | |
| 2827 return res; | |
| 2828 } | |
| 2829 | |
| 2830 // Reserve memory at an arbitrary address, only if that area is | |
| 2831 // available (and not reserved for something else). | |
| 2832 char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) { | |
| 2833 // Windows os::reserve_memory() fails of the requested address range is | |
| 2834 // not avilable. | |
| 2835 return reserve_memory(bytes, requested_addr); | |
| 2836 } | |
| 2837 | |
| 2838 size_t os::large_page_size() { | |
| 2839 return _large_page_size; | |
| 2840 } | |
| 2841 | |
| 2842 bool os::can_commit_large_page_memory() { | |
| 2843 // Windows only uses large page memory when the entire region is reserved | |
| 2844 // and committed in a single VirtualAlloc() call. This may change in the | |
| 2845 // future, but with Windows 2003 it's not possible to commit on demand. | |
| 2846 return false; | |
| 2847 } | |
| 2848 | |
|
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2849 bool os::can_execute_large_page_memory() { |
|
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2850 return true; |
|
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2851 } |
|
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2852 |
| 656 | 2853 char* os::reserve_memory_special(size_t bytes, char* addr, bool exec) { |
|
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2854 |
| 717 | 2855 const DWORD prot = exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE; |
|
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2856 |
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2857 if (UseLargePagesIndividualAllocation) { |
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2858 if (TracePageSizes && Verbose) { |
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2859 tty->print_cr("Reserving large pages individually."); |
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2860 } |
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2861 char * p_buf; |
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2862 // first reserve enough address space in advance since we want to be |
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2863 // able to break a single contiguous virtual address range into multiple |
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2864 // large page commits but WS2003 does not allow reserving large page space |
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2865 // so we just use 4K pages for reserve, this gives us a legal contiguous |
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2866 // address space. then we will deallocate that reservation, and re alloc |
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2867 // using large pages |
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2868 const size_t size_of_reserve = bytes + _large_page_size; |
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2869 if (bytes > size_of_reserve) { |
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2870 // Overflowed. |
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2871 warning("Individually allocated large pages failed, " |
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2872 "use -XX:-UseLargePagesIndividualAllocation to turn off"); |
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2873 return NULL; |
|
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2874 } |
|
642
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2875 p_buf = (char *) VirtualAlloc(addr, |
|
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2876 size_of_reserve, // size of Reserve |
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2877 MEM_RESERVE, |
| 656 | 2878 PAGE_READWRITE); |
|
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2879 // If reservation failed, return NULL |
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2880 if (p_buf == NULL) return NULL; |
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2881 |
|
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2882 release_memory(p_buf, bytes + _large_page_size); |
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2883 // round up to page boundary. If the size_of_reserve did not |
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2884 // overflow and the reservation did not fail, this align up |
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2885 // should not overflow. |
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2886 p_buf = (char *) align_size_up((size_t)p_buf, _large_page_size); |
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2887 |
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2888 // now go through and allocate one page at a time until all bytes are |
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2889 // allocated |
|
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2890 size_t bytes_remaining = align_size_up(bytes, _large_page_size); |
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2891 // An overflow of align_size_up() would have been caught above |
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2892 // in the calculation of size_of_reserve. |
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2893 char * next_alloc_addr = p_buf; |
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2894 |
|
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2895 #ifdef ASSERT |
|
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2896 // Variable for the failure injection |
|
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2897 long ran_num = os::random(); |
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2898 size_t fail_after = ran_num % bytes; |
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2899 #endif |
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2900 |
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2901 while (bytes_remaining) { |
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2902 size_t bytes_to_rq = MIN2(bytes_remaining, _large_page_size); |
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2903 // Note allocate and commit |
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2904 char * p_new; |
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2905 |
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2906 #ifdef ASSERT |
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2907 bool inject_error = LargePagesIndividualAllocationInjectError && |
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2908 (bytes_remaining <= fail_after); |
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2909 #else |
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2910 const bool inject_error = false; |
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2911 #endif |
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2912 |
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2913 if (inject_error) { |
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2914 p_new = NULL; |
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2915 } else { |
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2916 p_new = (char *) VirtualAlloc(next_alloc_addr, |
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2917 bytes_to_rq, |
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2918 MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES, |
| 717 | 2919 prot); |
|
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2920 } |
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2921 |
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2922 if (p_new == NULL) { |
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2923 // Free any allocated pages |
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2924 if (next_alloc_addr > p_buf) { |
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2925 // Some memory was committed so release it. |
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2926 size_t bytes_to_release = bytes - bytes_remaining; |
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2927 release_memory(p_buf, bytes_to_release); |
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2928 } |
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2929 #ifdef ASSERT |
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2930 if (UseLargePagesIndividualAllocation && |
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2931 LargePagesIndividualAllocationInjectError) { |
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2932 if (TracePageSizes && Verbose) { |
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2933 tty->print_cr("Reserving large pages individually failed."); |
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2934 } |
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2935 } |
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2936 #endif |
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2937 return NULL; |
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2938 } |
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2939 bytes_remaining -= bytes_to_rq; |
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2940 next_alloc_addr += bytes_to_rq; |
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2941 } |
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2942 |
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2943 return p_buf; |
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2944 |
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2945 } else { |
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2946 // normal policy just allocate it all at once |
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2947 DWORD flag = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES; |
| 717 | 2948 char * res = (char *)VirtualAlloc(NULL, bytes, flag, prot); |
|
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2949 return res; |
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2950 } |
| 0 | 2951 } |
| 2952 | |
| 2953 bool os::release_memory_special(char* base, size_t bytes) { | |
| 2954 return release_memory(base, bytes); | |
| 2955 } | |
| 2956 | |
| 2957 void os::print_statistics() { | |
| 2958 } | |
| 2959 | |
| 656 | 2960 bool os::commit_memory(char* addr, size_t bytes, bool exec) { |
| 0 | 2961 if (bytes == 0) { |
| 2962 // Don't bother the OS with noops. | |
| 2963 return true; | |
| 2964 } | |
| 2965 assert((size_t) addr % os::vm_page_size() == 0, "commit on page boundaries"); | |
| 2966 assert(bytes % os::vm_page_size() == 0, "commit in page-sized chunks"); | |
| 2967 // Don't attempt to print anything if the OS call fails. We're | |
| 2968 // probably low on resources, so the print itself may cause crashes. | |
| 656 | 2969 bool result = VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_READWRITE) != 0; |
| 2970 if (result != NULL && exec) { | |
| 2971 DWORD oldprot; | |
| 2972 // Windows doc says to use VirtualProtect to get execute permissions | |
| 2973 return VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &oldprot) != 0; | |
| 2974 } else { | |
| 2975 return result; | |
| 2976 } | |
| 0 | 2977 } |
| 2978 | |
| 656 | 2979 bool os::commit_memory(char* addr, size_t size, size_t alignment_hint, |
| 2980 bool exec) { | |
| 2981 return commit_memory(addr, size, exec); | |
| 0 | 2982 } |
| 2983 | |
| 2984 bool os::uncommit_memory(char* addr, size_t bytes) { | |
| 2985 if (bytes == 0) { | |
| 2986 // Don't bother the OS with noops. | |
| 2987 return true; | |
| 2988 } | |
| 2989 assert((size_t) addr % os::vm_page_size() == 0, "uncommit on page boundaries"); | |
| 2990 assert(bytes % os::vm_page_size() == 0, "uncommit in page-sized chunks"); | |
| 2991 return VirtualFree(addr, bytes, MEM_DECOMMIT) != 0; | |
| 2992 } | |
| 2993 | |
| 2994 bool os::release_memory(char* addr, size_t bytes) { | |
| 2995 return VirtualFree(addr, 0, MEM_RELEASE) != 0; | |
| 2996 } | |
| 2997 | |
|
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2998 bool os::create_stack_guard_pages(char* addr, size_t size) { |
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2999 return os::commit_memory(addr, size); |
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3000 } |
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3001 |
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3002 bool os::remove_stack_guard_pages(char* addr, size_t size) { |
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3003 return os::uncommit_memory(addr, size); |
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3004 } |
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3005 |
|
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3006 // Set protections specified |
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3007 bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
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3008 bool is_committed) { |
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3009 unsigned int p = 0; |
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3010 switch (prot) { |
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3011 case MEM_PROT_NONE: p = PAGE_NOACCESS; break; |
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3012 case MEM_PROT_READ: p = PAGE_READONLY; break; |
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3013 case MEM_PROT_RW: p = PAGE_READWRITE; break; |
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3014 case MEM_PROT_RWX: p = PAGE_EXECUTE_READWRITE; break; |
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3015 default: |
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3016 ShouldNotReachHere(); |
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3017 } |
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3018 |
| 0 | 3019 DWORD old_status; |
|
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3020 |
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3021 // Strange enough, but on Win32 one can change protection only for committed |
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3022 // memory, not a big deal anyway, as bytes less or equal than 64K |
| 656 | 3023 if (!is_committed && !commit_memory(addr, bytes, prot == MEM_PROT_RWX)) { |
|
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3024 fatal("cannot commit protection page"); |
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3025 } |
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3026 // One cannot use os::guard_memory() here, as on Win32 guard page |
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3027 // have different (one-shot) semantics, from MSDN on PAGE_GUARD: |
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3028 // |
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3029 // Pages in the region become guard pages. Any attempt to access a guard page |
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3030 // causes the system to raise a STATUS_GUARD_PAGE exception and turn off |
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3031 // the guard page status. Guard pages thus act as a one-time access alarm. |
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3032 return VirtualProtect(addr, bytes, p, &old_status) != 0; |
| 0 | 3033 } |
| 3034 | |
| 3035 bool os::guard_memory(char* addr, size_t bytes) { | |
| 3036 DWORD old_status; | |
|
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3037 return VirtualProtect(addr, bytes, PAGE_READWRITE | PAGE_GUARD, &old_status) != 0; |
| 0 | 3038 } |
| 3039 | |
| 3040 bool os::unguard_memory(char* addr, size_t bytes) { | |
| 3041 DWORD old_status; | |
|
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3042 return VirtualProtect(addr, bytes, PAGE_READWRITE, &old_status) != 0; |
| 0 | 3043 } |
| 3044 | |
| 3045 void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { } | |
| 3046 void os::free_memory(char *addr, size_t bytes) { } | |
| 3047 void os::numa_make_global(char *addr, size_t bytes) { } | |
| 141 | 3048 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { } |
| 0 | 3049 bool os::numa_topology_changed() { return false; } |
| 3050 size_t os::numa_get_groups_num() { return 1; } | |
| 3051 int os::numa_get_group_id() { return 0; } | |
| 3052 size_t os::numa_get_leaf_groups(int *ids, size_t size) { | |
| 3053 if (size > 0) { | |
| 3054 ids[0] = 0; | |
| 3055 return 1; | |
| 3056 } | |
| 3057 return 0; | |
| 3058 } | |
| 3059 | |
| 3060 bool os::get_page_info(char *start, page_info* info) { | |
| 3061 return false; | |
| 3062 } | |
| 3063 | |
| 3064 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { | |
| 3065 return end; | |
| 3066 } | |
| 3067 | |
| 3068 char* os::non_memory_address_word() { | |
| 3069 // Must never look like an address returned by reserve_memory, | |
| 3070 // even in its subfields (as defined by the CPU immediate fields, | |
| 3071 // if the CPU splits constants across multiple instructions). | |
| 3072 return (char*)-1; | |
| 3073 } | |
| 3074 | |
| 3075 #define MAX_ERROR_COUNT 100 | |
| 3076 #define SYS_THREAD_ERROR 0xffffffffUL | |
| 3077 | |
| 3078 void os::pd_start_thread(Thread* thread) { | |
| 3079 DWORD ret = ResumeThread(thread->osthread()->thread_handle()); | |
| 3080 // Returns previous suspend state: | |
| 3081 // 0: Thread was not suspended | |
| 3082 // 1: Thread is running now | |
| 3083 // >1: Thread is still suspended. | |
| 3084 assert(ret != SYS_THREAD_ERROR, "StartThread failed"); // should propagate back | |
| 3085 } | |
| 3086 | |
| 3087 class HighResolutionInterval { | |
| 3088 // The default timer resolution seems to be 10 milliseconds. | |
| 3089 // (Where is this written down?) | |
| 3090 // If someone wants to sleep for only a fraction of the default, | |
| 3091 // then we set the timer resolution down to 1 millisecond for | |
| 3092 // the duration of their interval. | |
| 3093 // We carefully set the resolution back, since otherwise we | |
| 3094 // seem to incur an overhead (3%?) that we don't need. | |
| 3095 // CONSIDER: if ms is small, say 3, then we should run with a high resolution time. | |
| 3096 // Buf if ms is large, say 500, or 503, we should avoid the call to timeBeginPeriod(). | |
| 3097 // Alternatively, we could compute the relative error (503/500 = .6%) and only use | |
| 3098 // timeBeginPeriod() if the relative error exceeded some threshold. | |
| 3099 // timeBeginPeriod() has been linked to problems with clock drift on win32 systems and | |
| 3100 // to decreased efficiency related to increased timer "tick" rates. We want to minimize | |
| 3101 // (a) calls to timeBeginPeriod() and timeEndPeriod() and (b) time spent with high | |
| 3102 // resolution timers running. | |
| 3103 private: | |
| 3104 jlong resolution; | |
| 3105 public: | |
| 3106 HighResolutionInterval(jlong ms) { | |
| 3107 resolution = ms % 10L; | |
| 3108 if (resolution != 0) { | |
| 3109 MMRESULT result = timeBeginPeriod(1L); | |
| 3110 } | |
| 3111 } | |
| 3112 ~HighResolutionInterval() { | |
| 3113 if (resolution != 0) { | |
| 3114 MMRESULT result = timeEndPeriod(1L); | |
| 3115 } | |
| 3116 resolution = 0L; | |
| 3117 } | |
| 3118 }; | |
| 3119 | |
| 3120 int os::sleep(Thread* thread, jlong ms, bool interruptable) { | |
| 3121 jlong limit = (jlong) MAXDWORD; | |
| 3122 | |
| 3123 while(ms > limit) { | |
| 3124 int res; | |
| 3125 if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT) | |
| 3126 return res; | |
| 3127 ms -= limit; | |
| 3128 } | |
| 3129 | |
| 3130 assert(thread == Thread::current(), "thread consistency check"); | |
| 3131 OSThread* osthread = thread->osthread(); | |
| 3132 OSThreadWaitState osts(osthread, false /* not Object.wait() */); | |
| 3133 int result; | |
| 3134 if (interruptable) { | |
| 3135 assert(thread->is_Java_thread(), "must be java thread"); | |
| 3136 JavaThread *jt = (JavaThread *) thread; | |
| 3137 ThreadBlockInVM tbivm(jt); | |
| 3138 | |
| 3139 jt->set_suspend_equivalent(); | |
| 3140 // cleared by handle_special_suspend_equivalent_condition() or | |
| 3141 // java_suspend_self() via check_and_wait_while_suspended() | |
| 3142 | |
| 3143 HANDLE events[1]; | |
| 3144 events[0] = osthread->interrupt_event(); | |
| 3145 HighResolutionInterval *phri=NULL; | |
| 3146 if(!ForceTimeHighResolution) | |
| 3147 phri = new HighResolutionInterval( ms ); | |
| 3148 if (WaitForMultipleObjects(1, events, FALSE, (DWORD)ms) == WAIT_TIMEOUT) { | |
| 3149 result = OS_TIMEOUT; | |
| 3150 } else { | |
| 3151 ResetEvent(osthread->interrupt_event()); | |
| 3152 osthread->set_interrupted(false); | |
| 3153 result = OS_INTRPT; | |
| 3154 } | |
| 3155 delete phri; //if it is NULL, harmless | |
| 3156 | |
| 3157 // were we externally suspended while we were waiting? | |
| 3158 jt->check_and_wait_while_suspended(); | |
| 3159 } else { | |
| 3160 assert(!thread->is_Java_thread(), "must not be java thread"); | |
| 3161 Sleep((long) ms); | |
| 3162 result = OS_TIMEOUT; | |
| 3163 } | |
| 3164 return result; | |
| 3165 } | |
| 3166 | |
| 3167 // Sleep forever; naked call to OS-specific sleep; use with CAUTION | |
| 3168 void os::infinite_sleep() { | |
| 3169 while (true) { // sleep forever ... | |
| 3170 Sleep(100000); // ... 100 seconds at a time | |
| 3171 } | |
| 3172 } | |
| 3173 | |
| 3174 typedef BOOL (WINAPI * STTSignature)(void) ; | |
| 3175 | |
| 3176 os::YieldResult os::NakedYield() { | |
| 3177 // Use either SwitchToThread() or Sleep(0) | |
| 3178 // Consider passing back the return value from SwitchToThread(). | |
| 3179 // We use GetProcAddress() as ancient Win9X versions of windows doen't support SwitchToThread. | |
| 3180 // In that case we revert to Sleep(0). | |
| 3181 static volatile STTSignature stt = (STTSignature) 1 ; | |
| 3182 | |
| 3183 if (stt == ((STTSignature) 1)) { | |
| 3184 stt = (STTSignature) ::GetProcAddress (LoadLibrary ("Kernel32.dll"), "SwitchToThread") ; | |
| 3185 // It's OK if threads race during initialization as the operation above is idempotent. | |
| 3186 } | |
| 3187 if (stt != NULL) { | |
| 3188 return (*stt)() ? os::YIELD_SWITCHED : os::YIELD_NONEREADY ; | |
| 3189 } else { | |
| 3190 Sleep (0) ; | |
| 3191 } | |
| 3192 return os::YIELD_UNKNOWN ; | |
| 3193 } | |
| 3194 | |
| 3195 void os::yield() { os::NakedYield(); } | |
| 3196 | |
| 3197 void os::yield_all(int attempts) { | |
| 3198 // Yields to all threads, including threads with lower priorities | |
| 3199 Sleep(1); | |
| 3200 } | |
| 3201 | |
| 3202 // Win32 only gives you access to seven real priorities at a time, | |
| 3203 // so we compress Java's ten down to seven. It would be better | |
| 3204 // if we dynamically adjusted relative priorities. | |
| 3205 | |
| 3206 int os::java_to_os_priority[MaxPriority + 1] = { | |
| 3207 THREAD_PRIORITY_IDLE, // 0 Entry should never be used | |
| 3208 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
| 3209 THREAD_PRIORITY_LOWEST, // 2 | |
| 3210 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
| 3211 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
| 3212 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
| 3213 THREAD_PRIORITY_NORMAL, // 6 | |
| 3214 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
| 3215 THREAD_PRIORITY_ABOVE_NORMAL, // 8 | |
| 3216 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
| 3217 THREAD_PRIORITY_HIGHEST // 10 MaxPriority | |
| 3218 }; | |
| 3219 | |
| 3220 int prio_policy1[MaxPriority + 1] = { | |
| 3221 THREAD_PRIORITY_IDLE, // 0 Entry should never be used | |
| 3222 THREAD_PRIORITY_LOWEST, // 1 MinPriority | |
| 3223 THREAD_PRIORITY_LOWEST, // 2 | |
| 3224 THREAD_PRIORITY_BELOW_NORMAL, // 3 | |
| 3225 THREAD_PRIORITY_BELOW_NORMAL, // 4 | |
| 3226 THREAD_PRIORITY_NORMAL, // 5 NormPriority | |
| 3227 THREAD_PRIORITY_ABOVE_NORMAL, // 6 | |
| 3228 THREAD_PRIORITY_ABOVE_NORMAL, // 7 | |
| 3229 THREAD_PRIORITY_HIGHEST, // 8 | |
| 3230 THREAD_PRIORITY_HIGHEST, // 9 NearMaxPriority | |
| 3231 THREAD_PRIORITY_TIME_CRITICAL // 10 MaxPriority | |
| 3232 }; | |
| 3233 | |
| 3234 static int prio_init() { | |
| 3235 // If ThreadPriorityPolicy is 1, switch tables | |
| 3236 if (ThreadPriorityPolicy == 1) { | |
| 3237 int i; | |
| 3238 for (i = 0; i < MaxPriority + 1; i++) { | |
| 3239 os::java_to_os_priority[i] = prio_policy1[i]; | |
| 3240 } | |
| 3241 } | |
| 3242 return 0; | |
| 3243 } | |
| 3244 | |
| 3245 OSReturn os::set_native_priority(Thread* thread, int priority) { | |
| 3246 if (!UseThreadPriorities) return OS_OK; | |
| 3247 bool ret = SetThreadPriority(thread->osthread()->thread_handle(), priority) != 0; | |
| 3248 return ret ? OS_OK : OS_ERR; | |
| 3249 } | |
| 3250 | |
| 3251 OSReturn os::get_native_priority(const Thread* const thread, int* priority_ptr) { | |
| 3252 if ( !UseThreadPriorities ) { | |
| 3253 *priority_ptr = java_to_os_priority[NormPriority]; | |
| 3254 return OS_OK; | |
| 3255 } | |
| 3256 int os_prio = GetThreadPriority(thread->osthread()->thread_handle()); | |
| 3257 if (os_prio == THREAD_PRIORITY_ERROR_RETURN) { | |
| 3258 assert(false, "GetThreadPriority failed"); | |
| 3259 return OS_ERR; | |
| 3260 } | |
| 3261 *priority_ptr = os_prio; | |
| 3262 return OS_OK; | |
| 3263 } | |
| 3264 | |
| 3265 | |
| 3266 // Hint to the underlying OS that a task switch would not be good. | |
| 3267 // Void return because it's a hint and can fail. | |
| 3268 void os::hint_no_preempt() {} | |
| 3269 | |
| 3270 void os::interrupt(Thread* thread) { | |
| 3271 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
| 3272 "possibility of dangling Thread pointer"); | |
| 3273 | |
| 3274 OSThread* osthread = thread->osthread(); | |
| 3275 osthread->set_interrupted(true); | |
| 3276 // More than one thread can get here with the same value of osthread, | |
| 3277 // resulting in multiple notifications. We do, however, want the store | |
| 3278 // to interrupted() to be visible to other threads before we post | |
| 3279 // the interrupt event. | |
| 3280 OrderAccess::release(); | |
| 3281 SetEvent(osthread->interrupt_event()); | |
| 3282 // For JSR166: unpark after setting status | |
| 3283 if (thread->is_Java_thread()) | |
| 3284 ((JavaThread*)thread)->parker()->unpark(); | |
| 3285 | |
| 3286 ParkEvent * ev = thread->_ParkEvent ; | |
| 3287 if (ev != NULL) ev->unpark() ; | |
| 3288 | |
| 3289 } | |
| 3290 | |
| 3291 | |
| 3292 bool os::is_interrupted(Thread* thread, bool clear_interrupted) { | |
| 3293 assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(), | |
| 3294 "possibility of dangling Thread pointer"); | |
| 3295 | |
| 3296 OSThread* osthread = thread->osthread(); | |
| 3297 bool interrupted; | |
| 3298 interrupted = osthread->interrupted(); | |
| 3299 if (clear_interrupted == true) { | |
| 3300 osthread->set_interrupted(false); | |
| 3301 ResetEvent(osthread->interrupt_event()); | |
| 3302 } // Otherwise leave the interrupted state alone | |
| 3303 | |
| 3304 return interrupted; | |
| 3305 } | |
| 3306 | |
| 3307 // Get's a pc (hint) for a running thread. Currently used only for profiling. | |
| 3308 ExtendedPC os::get_thread_pc(Thread* thread) { | |
| 3309 CONTEXT context; | |
| 3310 context.ContextFlags = CONTEXT_CONTROL; | |
| 3311 HANDLE handle = thread->osthread()->thread_handle(); | |
| 3312 #ifdef _M_IA64 | |
| 3313 assert(0, "Fix get_thread_pc"); | |
| 3314 return ExtendedPC(NULL); | |
| 3315 #else | |
| 3316 if (GetThreadContext(handle, &context)) { | |
| 3317 #ifdef _M_AMD64 | |
| 3318 return ExtendedPC((address) context.Rip); | |
| 3319 #else | |
| 3320 return ExtendedPC((address) context.Eip); | |
| 3321 #endif | |
| 3322 } else { | |
| 3323 return ExtendedPC(NULL); | |
| 3324 } | |
| 3325 #endif | |
| 3326 } | |
| 3327 | |
| 3328 // GetCurrentThreadId() returns DWORD | |
| 3329 intx os::current_thread_id() { return GetCurrentThreadId(); } | |
| 3330 | |
| 3331 static int _initial_pid = 0; | |
| 3332 | |
| 3333 int os::current_process_id() | |
| 3334 { | |
| 3335 return (_initial_pid ? _initial_pid : _getpid()); | |
| 3336 } | |
| 3337 | |
| 3338 int os::win32::_vm_page_size = 0; | |
| 3339 int os::win32::_vm_allocation_granularity = 0; | |
| 3340 int os::win32::_processor_type = 0; | |
| 3341 // Processor level is not available on non-NT systems, use vm_version instead | |
| 3342 int os::win32::_processor_level = 0; | |
| 3343 julong os::win32::_physical_memory = 0; | |
| 3344 size_t os::win32::_default_stack_size = 0; | |
| 3345 | |
| 3346 intx os::win32::_os_thread_limit = 0; | |
| 3347 volatile intx os::win32::_os_thread_count = 0; | |
| 3348 | |
| 3349 bool os::win32::_is_nt = false; | |
|
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3350 bool os::win32::_is_windows_2003 = false; |
|
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3351 bool os::win32::_is_windows_server = false; |
| 0 | 3352 |
| 3353 void os::win32::initialize_system_info() { | |
| 3354 SYSTEM_INFO si; | |
| 3355 GetSystemInfo(&si); | |
| 3356 _vm_page_size = si.dwPageSize; | |
| 3357 _vm_allocation_granularity = si.dwAllocationGranularity; | |
| 3358 _processor_type = si.dwProcessorType; | |
| 3359 _processor_level = si.wProcessorLevel; | |
|
1123
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|
3360 set_processor_count(si.dwNumberOfProcessors); |
| 0 | 3361 |
|
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|
3362 MEMORYSTATUSEX ms; |
|
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3363 ms.dwLength = sizeof(ms); |
|
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3364 |
| 0 | 3365 // also returns dwAvailPhys (free physical memory bytes), dwTotalVirtual, dwAvailVirtual, |
| 3366 // dwMemoryLoad (% of memory in use) | |
|
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|
3367 GlobalMemoryStatusEx(&ms); |
|
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|
3368 _physical_memory = ms.ullTotalPhys; |
| 0 | 3369 |
|
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|
3370 OSVERSIONINFOEX oi; |
|
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|
3371 oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); |
|
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|
3372 GetVersionEx((OSVERSIONINFO*)&oi); |
| 0 | 3373 switch(oi.dwPlatformId) { |
| 3374 case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break; | |
|
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3375 case VER_PLATFORM_WIN32_NT: |
|
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|
3376 _is_nt = true; |
|
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|
3377 { |
|
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|
3378 int os_vers = oi.dwMajorVersion * 1000 + oi.dwMinorVersion; |
|
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3379 if (os_vers == 5002) { |
|
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3380 _is_windows_2003 = true; |
|
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|
3381 } |
|
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|
3382 if (oi.wProductType == VER_NT_DOMAIN_CONTROLLER || |
|
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3383 oi.wProductType == VER_NT_SERVER) { |
|
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3384 _is_windows_server = true; |
|
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|
3385 } |
|
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|
3386 } |
|
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|
3387 break; |
| 0 | 3388 default: fatal("Unknown platform"); |
| 3389 } | |
| 3390 | |
| 3391 _default_stack_size = os::current_stack_size(); | |
| 3392 assert(_default_stack_size > (size_t) _vm_page_size, "invalid stack size"); | |
| 3393 assert((_default_stack_size & (_vm_page_size - 1)) == 0, | |
| 3394 "stack size not a multiple of page size"); | |
| 3395 | |
| 3396 initialize_performance_counter(); | |
| 3397 | |
| 3398 // Win95/Win98 scheduler bug work-around. The Win95/98 scheduler is | |
| 3399 // known to deadlock the system, if the VM issues to thread operations with | |
| 3400 // a too high frequency, e.g., such as changing the priorities. | |
| 3401 // The 6000 seems to work well - no deadlocks has been notices on the test | |
| 3402 // programs that we have seen experience this problem. | |
| 3403 if (!os::win32::is_nt()) { | |
| 3404 StarvationMonitorInterval = 6000; | |
| 3405 } | |
| 3406 } | |
| 3407 | |
| 3408 | |
| 3409 void os::win32::setmode_streams() { | |
| 3410 _setmode(_fileno(stdin), _O_BINARY); | |
| 3411 _setmode(_fileno(stdout), _O_BINARY); | |
| 3412 _setmode(_fileno(stderr), _O_BINARY); | |
| 3413 } | |
| 3414 | |
| 3415 | |
| 3416 int os::message_box(const char* title, const char* message) { | |
| 3417 int result = MessageBox(NULL, message, title, | |
| 3418 MB_YESNO | MB_ICONERROR | MB_SYSTEMMODAL | MB_DEFAULT_DESKTOP_ONLY); | |
| 3419 return result == IDYES; | |
| 3420 } | |
| 3421 | |
| 3422 int os::allocate_thread_local_storage() { | |
| 3423 return TlsAlloc(); | |
| 3424 } | |
| 3425 | |
| 3426 | |
| 3427 void os::free_thread_local_storage(int index) { | |
| 3428 TlsFree(index); | |
| 3429 } | |
| 3430 | |
| 3431 | |
| 3432 void os::thread_local_storage_at_put(int index, void* value) { | |
| 3433 TlsSetValue(index, value); | |
| 3434 assert(thread_local_storage_at(index) == value, "Just checking"); | |
| 3435 } | |
| 3436 | |
| 3437 | |
| 3438 void* os::thread_local_storage_at(int index) { | |
| 3439 return TlsGetValue(index); | |
| 3440 } | |
| 3441 | |
| 3442 | |
| 3443 #ifndef PRODUCT | |
| 3444 #ifndef _WIN64 | |
| 3445 // Helpers to check whether NX protection is enabled | |
| 3446 int nx_exception_filter(_EXCEPTION_POINTERS *pex) { | |
| 3447 if (pex->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && | |
| 3448 pex->ExceptionRecord->NumberParameters > 0 && | |
| 3449 pex->ExceptionRecord->ExceptionInformation[0] == | |
| 3450 EXCEPTION_INFO_EXEC_VIOLATION) { | |
| 3451 return EXCEPTION_EXECUTE_HANDLER; | |
| 3452 } | |
| 3453 return EXCEPTION_CONTINUE_SEARCH; | |
| 3454 } | |
| 3455 | |
| 3456 void nx_check_protection() { | |
| 3457 // If NX is enabled we'll get an exception calling into code on the stack | |
| 3458 char code[] = { (char)0xC3 }; // ret | |
| 3459 void *code_ptr = (void *)code; | |
| 3460 __try { | |
| 3461 __asm call code_ptr | |
| 3462 } __except(nx_exception_filter((_EXCEPTION_POINTERS*)_exception_info())) { | |
| 3463 tty->print_raw_cr("NX protection detected."); | |
| 3464 } | |
| 3465 } | |
| 3466 #endif // _WIN64 | |
| 3467 #endif // PRODUCT | |
| 3468 | |
| 3469 // this is called _before_ the global arguments have been parsed | |
| 3470 void os::init(void) { | |
| 3471 _initial_pid = _getpid(); | |
| 3472 | |
| 3473 init_random(1234567); | |
| 3474 | |
| 3475 win32::initialize_system_info(); | |
| 3476 win32::setmode_streams(); | |
| 3477 init_page_sizes((size_t) win32::vm_page_size()); | |
| 3478 | |
| 3479 // For better scalability on MP systems (must be called after initialize_system_info) | |
| 3480 #ifndef PRODUCT | |
| 3481 if (is_MP()) { | |
| 3482 NoYieldsInMicrolock = true; | |
| 3483 } | |
| 3484 #endif | |
|
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|
3485 // This may be overridden later when argument processing is done. |
|
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|
3486 FLAG_SET_ERGO(bool, UseLargePagesIndividualAllocation, |
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|
3487 os::win32::is_windows_2003()); |
|
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|
3488 |
| 0 | 3489 // Initialize main_process and main_thread |
| 3490 main_process = GetCurrentProcess(); // Remember main_process is a pseudo handle | |
|
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|
3491 if (!DuplicateHandle(main_process, GetCurrentThread(), main_process, |
| 0 | 3492 &main_thread, THREAD_ALL_ACCESS, false, 0)) { |
| 3493 fatal("DuplicateHandle failed\n"); | |
| 3494 } | |
| 3495 main_thread_id = (int) GetCurrentThreadId(); | |
| 3496 } | |
| 3497 | |
| 3498 // To install functions for atexit processing | |
| 3499 extern "C" { | |
| 3500 static void perfMemory_exit_helper() { | |
| 3501 perfMemory_exit(); | |
| 3502 } | |
| 3503 } | |
| 3504 | |
| 3505 // this is called _after_ the global arguments have been parsed | |
| 3506 jint os::init_2(void) { | |
| 3507 // Allocate a single page and mark it as readable for safepoint polling | |
| 3508 address polling_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READONLY); | |
| 3509 guarantee( polling_page != NULL, "Reserve Failed for polling page"); | |
| 3510 | |
| 3511 address return_page = (address)VirtualAlloc(polling_page, os::vm_page_size(), MEM_COMMIT, PAGE_READONLY); | |
| 3512 guarantee( return_page != NULL, "Commit Failed for polling page"); | |
| 3513 | |
| 3514 os::set_polling_page( polling_page ); | |
| 3515 | |
| 3516 #ifndef PRODUCT | |
| 3517 if( Verbose && PrintMiscellaneous ) | |
| 3518 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); | |
| 3519 #endif | |
| 3520 | |
| 3521 if (!UseMembar) { | |
| 656 | 3522 address mem_serialize_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READWRITE); |
| 0 | 3523 guarantee( mem_serialize_page != NULL, "Reserve Failed for memory serialize page"); |
| 3524 | |
| 656 | 3525 return_page = (address)VirtualAlloc(mem_serialize_page, os::vm_page_size(), MEM_COMMIT, PAGE_READWRITE); |
| 0 | 3526 guarantee( return_page != NULL, "Commit Failed for memory serialize page"); |
| 3527 | |
| 3528 os::set_memory_serialize_page( mem_serialize_page ); | |
| 3529 | |
| 3530 #ifndef PRODUCT | |
| 3531 if(Verbose && PrintMiscellaneous) | |
| 3532 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); | |
| 3533 #endif | |
| 3534 } | |
| 3535 | |
| 3536 FLAG_SET_DEFAULT(UseLargePages, os::large_page_init()); | |
| 3537 | |
| 3538 // Setup Windows Exceptions | |
| 3539 | |
| 3540 // On Itanium systems, Structured Exception Handling does not | |
| 3541 // work since stack frames must be walkable by the OS. Since | |
| 3542 // much of our code is dynamically generated, and we do not have | |
| 3543 // proper unwind .xdata sections, the system simply exits | |
| 3544 // rather than delivering the exception. To work around | |
| 3545 // this we use VectorExceptions instead. | |
| 3546 #ifdef _WIN64 | |
| 3547 if (UseVectoredExceptions) { | |
| 3548 topLevelVectoredExceptionHandler = AddVectoredExceptionHandler( 1, topLevelExceptionFilter); | |
| 3549 } | |
| 3550 #endif | |
| 3551 | |
| 3552 // for debugging float code generation bugs | |
| 3553 if (ForceFloatExceptions) { | |
| 3554 #ifndef _WIN64 | |
| 3555 static long fp_control_word = 0; | |
| 3556 __asm { fstcw fp_control_word } | |
| 3557 // see Intel PPro Manual, Vol. 2, p 7-16 | |
| 3558 const long precision = 0x20; | |
| 3559 const long underflow = 0x10; | |
| 3560 const long overflow = 0x08; | |
| 3561 const long zero_div = 0x04; | |
| 3562 const long denorm = 0x02; | |
| 3563 const long invalid = 0x01; | |
| 3564 fp_control_word |= invalid; | |
| 3565 __asm { fldcw fp_control_word } | |
| 3566 #endif | |
| 3567 } | |
| 3568 | |
| 3569 // If stack_commit_size is 0, windows will reserve the default size, | |
| 3570 // but only commit a small portion of it. | |
| 3571 size_t stack_commit_size = round_to(ThreadStackSize*K, os::vm_page_size()); | |
| 3572 size_t default_reserve_size = os::win32::default_stack_size(); | |
| 3573 size_t actual_reserve_size = stack_commit_size; | |
| 3574 if (stack_commit_size < default_reserve_size) { | |
| 3575 // If stack_commit_size == 0, we want this too | |
| 3576 actual_reserve_size = default_reserve_size; | |
| 3577 } | |
| 3578 | |
|
1867
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|
3579 // Check minimum allowable stack size for thread creation and to initialize |
|
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|
3580 // the java system classes, including StackOverflowError - depends on page |
|
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|
3581 // size. Add a page for compiler2 recursion in main thread. |
|
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|
3582 // Add in 2*BytesPerWord times page size to account for VM stack during |
|
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|
3583 // class initialization depending on 32 or 64 bit VM. |
|
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|
3584 size_t min_stack_allowed = |
|
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|
3585 (size_t)(StackYellowPages+StackRedPages+StackShadowPages+ |
|
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|
3586 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size(); |
|
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|
3587 if (actual_reserve_size < min_stack_allowed) { |
|
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|
3588 tty->print_cr("\nThe stack size specified is too small, " |
|
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|
3589 "Specify at least %dk", |
|
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|
3590 min_stack_allowed / K); |
|
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|
3591 return JNI_ERR; |
|
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3592 } |
|
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1865
diff
changeset
|
3593 |
| 0 | 3594 JavaThread::set_stack_size_at_create(stack_commit_size); |
| 3595 | |
| 3596 // Calculate theoretical max. size of Threads to guard gainst artifical | |
| 3597 // out-of-memory situations, where all available address-space has been | |
| 3598 // reserved by thread stacks. | |
| 3599 assert(actual_reserve_size != 0, "Must have a stack"); | |
| 3600 | |
| 3601 // Calculate the thread limit when we should start doing Virtual Memory | |
| 3602 // banging. Currently when the threads will have used all but 200Mb of space. | |
| 3603 // | |
| 3604 // TODO: consider performing a similar calculation for commit size instead | |
| 3605 // as reserve size, since on a 64-bit platform we'll run into that more | |
| 3606 // often than running out of virtual memory space. We can use the | |
| 3607 // lower value of the two calculations as the os_thread_limit. | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
79
diff
changeset
|
3608 size_t max_address_space = ((size_t)1 << (BitsPerWord - 1)) - (200 * K * K); |
| 0 | 3609 win32::_os_thread_limit = (intx)(max_address_space / actual_reserve_size); |
| 3610 | |
| 3611 // at exit methods are called in the reverse order of their registration. | |
| 3612 // there is no limit to the number of functions registered. atexit does | |
| 3613 // not set errno. | |
| 3614 | |
| 3615 if (PerfAllowAtExitRegistration) { | |
| 3616 // only register atexit functions if PerfAllowAtExitRegistration is set. | |
| 3617 // atexit functions can be delayed until process exit time, which | |
| 3618 // can be problematic for embedded VM situations. Embedded VMs should | |
| 3619 // call DestroyJavaVM() to assure that VM resources are released. | |
| 3620 | |
| 3621 // note: perfMemory_exit_helper atexit function may be removed in | |
| 3622 // the future if the appropriate cleanup code can be added to the | |
| 3623 // VM_Exit VMOperation's doit method. | |
| 3624 if (atexit(perfMemory_exit_helper) != 0) { | |
| 3625 warning("os::init_2 atexit(perfMemory_exit_helper) failed"); | |
| 3626 } | |
| 3627 } | |
| 3628 | |
| 3629 // initialize PSAPI or ToolHelp for fatal error handler | |
| 3630 if (win32::is_nt()) _init_psapi(); | |
| 3631 else _init_toolhelp(); | |
| 3632 | |
| 3633 #ifndef _WIN64 | |
| 3634 // Print something if NX is enabled (win32 on AMD64) | |
| 3635 NOT_PRODUCT(if (PrintMiscellaneous && Verbose) nx_check_protection()); | |
| 3636 #endif | |
| 3637 | |
| 3638 // initialize thread priority policy | |
| 3639 prio_init(); | |
| 3640 | |
|
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
389
diff
changeset
|
3641 if (UseNUMA && !ForceNUMA) { |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
389
diff
changeset
|
3642 UseNUMA = false; // Currently unsupported. |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
389
diff
changeset
|
3643 } |
|
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
389
diff
changeset
|
3644 |
| 0 | 3645 return JNI_OK; |
| 3646 } | |
| 3647 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3648 void os::init_3(void) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3649 return; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
3650 } |
| 0 | 3651 |
| 3652 // Mark the polling page as unreadable | |
| 3653 void os::make_polling_page_unreadable(void) { | |
| 3654 DWORD old_status; | |
| 3655 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_NOACCESS, &old_status) ) | |
| 3656 fatal("Could not disable polling page"); | |
| 3657 }; | |
| 3658 | |
| 3659 // Mark the polling page as readable | |
| 3660 void os::make_polling_page_readable(void) { | |
| 3661 DWORD old_status; | |
| 3662 if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_READONLY, &old_status) ) | |
| 3663 fatal("Could not enable polling page"); | |
| 3664 }; | |
| 3665 | |
| 3666 | |
| 3667 int os::stat(const char *path, struct stat *sbuf) { | |
| 3668 char pathbuf[MAX_PATH]; | |
| 3669 if (strlen(path) > MAX_PATH - 1) { | |
| 3670 errno = ENAMETOOLONG; | |
| 3671 return -1; | |
| 3672 } | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3673 os::native_path(strcpy(pathbuf, path)); |
| 0 | 3674 int ret = ::stat(pathbuf, sbuf); |
| 3675 if (sbuf != NULL && UseUTCFileTimestamp) { | |
| 3676 // Fix for 6539723. st_mtime returned from stat() is dependent on | |
| 3677 // the system timezone and so can return different values for the | |
| 3678 // same file if/when daylight savings time changes. This adjustment | |
| 3679 // makes sure the same timestamp is returned regardless of the TZ. | |
| 3680 // | |
| 3681 // See: | |
| 3682 // http://msdn.microsoft.com/library/ | |
| 3683 // default.asp?url=/library/en-us/sysinfo/base/ | |
| 3684 // time_zone_information_str.asp | |
| 3685 // and | |
| 3686 // http://msdn.microsoft.com/library/default.asp?url= | |
| 3687 // /library/en-us/sysinfo/base/settimezoneinformation.asp | |
| 3688 // | |
| 3689 // NOTE: there is a insidious bug here: If the timezone is changed | |
| 3690 // after the call to stat() but before 'GetTimeZoneInformation()', then | |
| 3691 // the adjustment we do here will be wrong and we'll return the wrong | |
| 3692 // value (which will likely end up creating an invalid class data | |
| 3693 // archive). Absent a better API for this, or some time zone locking | |
| 3694 // mechanism, we'll have to live with this risk. | |
| 3695 TIME_ZONE_INFORMATION tz; | |
| 3696 DWORD tzid = GetTimeZoneInformation(&tz); | |
| 3697 int daylightBias = | |
| 3698 (tzid == TIME_ZONE_ID_DAYLIGHT) ? tz.DaylightBias : tz.StandardBias; | |
| 3699 sbuf->st_mtime += (tz.Bias + daylightBias) * 60; | |
| 3700 } | |
| 3701 return ret; | |
| 3702 } | |
| 3703 | |
| 3704 | |
| 3705 #define FT2INT64(ft) \ | |
| 3706 ((jlong)((jlong)(ft).dwHighDateTime << 32 | (julong)(ft).dwLowDateTime)) | |
| 3707 | |
| 3708 | |
| 3709 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) | |
| 3710 // are used by JVM M&M and JVMTI to get user+sys or user CPU time | |
| 3711 // of a thread. | |
| 3712 // | |
| 3713 // current_thread_cpu_time() and thread_cpu_time(Thread*) returns | |
| 3714 // the fast estimate available on the platform. | |
| 3715 | |
| 3716 // current_thread_cpu_time() is not optimized for Windows yet | |
| 3717 jlong os::current_thread_cpu_time() { | |
| 3718 // return user + sys since the cost is the same | |
| 3719 return os::thread_cpu_time(Thread::current(), true /* user+sys */); | |
| 3720 } | |
| 3721 | |
| 3722 jlong os::thread_cpu_time(Thread* thread) { | |
| 3723 // consistent with what current_thread_cpu_time() returns. | |
| 3724 return os::thread_cpu_time(thread, true /* user+sys */); | |
| 3725 } | |
| 3726 | |
| 3727 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { | |
| 3728 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); | |
| 3729 } | |
| 3730 | |
| 3731 jlong os::thread_cpu_time(Thread* thread, bool user_sys_cpu_time) { | |
| 3732 // This code is copy from clasic VM -> hpi::sysThreadCPUTime | |
| 3733 // If this function changes, os::is_thread_cpu_time_supported() should too | |
| 3734 if (os::win32::is_nt()) { | |
| 3735 FILETIME CreationTime; | |
| 3736 FILETIME ExitTime; | |
| 3737 FILETIME KernelTime; | |
| 3738 FILETIME UserTime; | |
| 3739 | |
| 3740 if ( GetThreadTimes(thread->osthread()->thread_handle(), | |
| 3741 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
| 3742 return -1; | |
| 3743 else | |
| 3744 if (user_sys_cpu_time) { | |
| 3745 return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100; | |
| 3746 } else { | |
| 3747 return FT2INT64(UserTime) * 100; | |
| 3748 } | |
| 3749 } else { | |
| 3750 return (jlong) timeGetTime() * 1000000; | |
| 3751 } | |
| 3752 } | |
| 3753 | |
| 3754 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
| 3755 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
| 3756 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
| 3757 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
| 3758 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
| 3759 } | |
| 3760 | |
| 3761 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { | |
| 3762 info_ptr->max_value = ALL_64_BITS; // the max value -- all 64 bits | |
| 3763 info_ptr->may_skip_backward = false; // GetThreadTimes returns absolute time | |
| 3764 info_ptr->may_skip_forward = false; // GetThreadTimes returns absolute time | |
| 3765 info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned | |
| 3766 } | |
| 3767 | |
| 3768 bool os::is_thread_cpu_time_supported() { | |
| 3769 // see os::thread_cpu_time | |
| 3770 if (os::win32::is_nt()) { | |
| 3771 FILETIME CreationTime; | |
| 3772 FILETIME ExitTime; | |
| 3773 FILETIME KernelTime; | |
| 3774 FILETIME UserTime; | |
| 3775 | |
| 3776 if ( GetThreadTimes(GetCurrentThread(), | |
| 3777 &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0) | |
| 3778 return false; | |
| 3779 else | |
| 3780 return true; | |
| 3781 } else { | |
| 3782 return false; | |
| 3783 } | |
| 3784 } | |
| 3785 | |
| 3786 // Windows does't provide a loadavg primitive so this is stubbed out for now. | |
| 3787 // It does have primitives (PDH API) to get CPU usage and run queue length. | |
| 3788 // "\\Processor(_Total)\\% Processor Time", "\\System\\Processor Queue Length" | |
| 3789 // If we wanted to implement loadavg on Windows, we have a few options: | |
| 3790 // | |
| 3791 // a) Query CPU usage and run queue length and "fake" an answer by | |
| 3792 // returning the CPU usage if it's under 100%, and the run queue | |
| 3793 // length otherwise. It turns out that querying is pretty slow | |
| 3794 // on Windows, on the order of 200 microseconds on a fast machine. | |
| 3795 // Note that on the Windows the CPU usage value is the % usage | |
| 3796 // since the last time the API was called (and the first call | |
| 3797 // returns 100%), so we'd have to deal with that as well. | |
| 3798 // | |
| 3799 // b) Sample the "fake" answer using a sampling thread and store | |
| 3800 // the answer in a global variable. The call to loadavg would | |
| 3801 // just return the value of the global, avoiding the slow query. | |
| 3802 // | |
| 3803 // c) Sample a better answer using exponential decay to smooth the | |
| 3804 // value. This is basically the algorithm used by UNIX kernels. | |
| 3805 // | |
| 3806 // Note that sampling thread starvation could affect both (b) and (c). | |
| 3807 int os::loadavg(double loadavg[], int nelem) { | |
| 3808 return -1; | |
| 3809 } | |
| 3810 | |
| 3811 | |
| 3812 // DontYieldALot=false by default: dutifully perform all yields as requested by JVM_Yield() | |
| 3813 bool os::dont_yield() { | |
| 3814 return DontYieldALot; | |
| 3815 } | |
| 3816 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 // 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
|
3818 // 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
|
3819 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3820 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
|
3821 char pathbuf[MAX_PATH]; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3822 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3823 if (strlen(path) > MAX_PATH - 1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3824 errno = ENAMETOOLONG; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3825 return -1; |
|
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 os::native_path(strcpy(pathbuf, path)); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3828 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
|
3829 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3830 |
| 0 | 3831 // Is a (classpath) directory empty? |
| 3832 bool os::dir_is_empty(const char* path) { | |
| 3833 WIN32_FIND_DATA fd; | |
| 3834 HANDLE f = FindFirstFile(path, &fd); | |
| 3835 if (f == INVALID_HANDLE_VALUE) { | |
| 3836 return true; | |
| 3837 } | |
| 3838 FindClose(f); | |
| 3839 return false; | |
| 3840 } | |
| 3841 | |
| 3842 // create binary file, rewriting existing file if required | |
| 3843 int os::create_binary_file(const char* path, bool rewrite_existing) { | |
| 3844 int oflags = _O_CREAT | _O_WRONLY | _O_BINARY; | |
| 3845 if (!rewrite_existing) { | |
| 3846 oflags |= _O_EXCL; | |
| 3847 } | |
| 3848 return ::open(path, oflags, _S_IREAD | _S_IWRITE); | |
| 3849 } | |
| 3850 | |
| 3851 // return current position of file pointer | |
| 3852 jlong os::current_file_offset(int fd) { | |
| 3853 return (jlong)::_lseeki64(fd, (__int64)0L, SEEK_CUR); | |
| 3854 } | |
| 3855 | |
| 3856 // move file pointer to the specified offset | |
| 3857 jlong os::seek_to_file_offset(int fd, jlong offset) { | |
| 3858 return (jlong)::_lseeki64(fd, (__int64)offset, SEEK_SET); | |
| 3859 } | |
| 3860 | |
| 3861 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3862 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
|
3863 return (jlong) ::_lseeki64(fd, offset, whence); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3864 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3865 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3866 // 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
|
3867 // from src/windows/hpi/src/path_md.c |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3868 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3869 /* 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
|
3870 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
|
3871 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
|
3872 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
|
3873 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
|
3874 treat double-byte lead characters correctly. |
|
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 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
|
3877 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
|
3878 succeeds. */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3879 char * os::native_path(char *path) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3880 char *src = path, *dst = path, *end = path; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3881 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
|
3882 point to the colon following the drive |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3883 letter */ |
|
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 /* Assumption: '/', '\\', ':', and drive letters are never lead bytes */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3886 assert(((!::IsDBCSLeadByte('/')) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3887 && (!::IsDBCSLeadByte('\\')) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3888 && (!::IsDBCSLeadByte(':'))), |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3889 "Illegal lead byte"); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3890 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3891 /* Check for leading separators */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3892 #define isfilesep(c) ((c) == '/' || (c) == '\\') |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3893 while (isfilesep(*src)) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3894 src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3895 } |
|
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 if (::isalpha(*src) && !::IsDBCSLeadByte(*src) && src[1] == ':') { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3898 /* 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
|
3899 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
|
3900 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
|
3901 "/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
|
3902 *dst++ = *src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3903 colon = dst; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3904 *dst++ = ':'; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3905 src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3906 } else { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3907 src = path; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3908 if (isfilesep(src[0]) && isfilesep(src[1])) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3909 /* 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
|
3910 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
|
3911 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
|
3912 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
|
3913 src = dst = path + 1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3914 path[0] = '\\'; /* Force first separator to '\\' */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3915 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3916 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3917 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3918 end = dst; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3919 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3920 /* 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
|
3921 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
|
3922 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
|
3923 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
|
3924 */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3925 while (*src != '\0') { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3926 if (isfilesep(*src)) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3927 *dst++ = '\\'; src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3928 while (isfilesep(*src)) src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3929 if (*src == '\0') { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3930 /* Check for trailing separator */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3931 end = dst; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3932 if (colon == dst - 2) break; /* "z:\\" */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3933 if (dst == path + 1) break; /* "\\" */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3934 if (dst == path + 2 && isfilesep(path[0])) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3935 /* "\\\\" is not collapsed to "\\" because "\\\\" marks the |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3936 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
|
3937 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
|
3938 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
|
3939 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
|
3940 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
|
3941 directory of the current drive. */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3942 break; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3943 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3944 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
|
3945 remove trailing separator */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3946 break; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3947 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3948 end = dst; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3949 } else { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3950 if (::IsDBCSLeadByte(*src)) { /* Copy a double-byte character */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3951 *dst++ = *src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3952 if (*src) *dst++ = *src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3953 end = dst; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3954 } else { /* Copy a single-byte character */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3955 char c = *src++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3956 *dst++ = c; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3957 /* Space is not a legal ending character */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3958 if (c != ' ') end = dst; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3959 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3960 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3961 } |
|
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 *end = '\0'; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3964 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3965 /* 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
|
3966 if (colon == dst - 1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3967 path[2] = '.'; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3968 path[3] = '\0'; |
|
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 #ifdef DEBUG |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3972 jio_fprintf(stderr, "sysNativePath: %s\n", path); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3973 #endif DEBUG |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3974 return path; |
|
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 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3977 // 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
|
3978 // 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
|
3979 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3980 int os::ftruncate(int fd, jlong length) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3981 HANDLE h = (HANDLE)::_get_osfhandle(fd); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3982 long high = (long)(length >> 32); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3983 DWORD ret; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3984 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3985 if (h == (HANDLE)(-1)) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3986 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3987 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3988 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3989 ret = ::SetFilePointer(h, (long)(length), &high, FILE_BEGIN); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3990 if ((ret == 0xFFFFFFFF) && (::GetLastError() != NO_ERROR)) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3991 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3992 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3993 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3994 if (::SetEndOfFile(h) == FALSE) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3995 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3996 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3997 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3998 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3999 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4000 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4001 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4002 // 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
|
4003 // 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
|
4004 // 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
|
4005 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4006 int os::fsync(int fd) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4007 HANDLE handle = (HANDLE)::_get_osfhandle(fd); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4008 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4009 if ( (!::FlushFileBuffers(handle)) && |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4010 (GetLastError() != ERROR_ACCESS_DENIED) ) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4011 /* from winerror.h */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4012 return -1; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4013 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4014 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4015 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4016 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4017 static int nonSeekAvailable(int, long *); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4018 static int stdinAvailable(int, long *); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4019 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4020 #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
|
4021 #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
|
4022 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4023 // 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
|
4024 // 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
|
4025 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4026 int os::available(int fd, jlong *bytes) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4027 jlong cur, end; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4028 struct _stati64 stbuf64; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4029 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4030 if (::_fstati64(fd, &stbuf64) >= 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4031 int mode = stbuf64.st_mode; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4032 if (S_ISCHR(mode) || S_ISFIFO(mode)) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4033 int ret; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4034 long lpbytes; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4035 if (fd == 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4036 ret = stdinAvailable(fd, &lpbytes); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4037 } else { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4038 ret = nonSeekAvailable(fd, &lpbytes); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4039 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4040 (*bytes) = (jlong)(lpbytes); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4041 return ret; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4042 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4043 if ((cur = ::_lseeki64(fd, 0L, SEEK_CUR)) == -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4044 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4045 } 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
|
4046 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4047 } else if (::_lseeki64(fd, cur, SEEK_SET) == -1) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4048 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4049 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4050 *bytes = end - cur; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4051 return TRUE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4052 } else { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4053 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4054 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4055 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4056 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4057 // 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
|
4058 // 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
|
4059 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4060 static int nonSeekAvailable(int fd, long *pbytes) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4061 /* 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
|
4062 * (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
|
4063 * connected to an exec'd process). |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4064 * Standard Input is a special case. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4065 * |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4066 */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4067 HANDLE han; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4068 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4069 if ((han = (HANDLE) ::_get_osfhandle(fd)) == (HANDLE)(-1)) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4070 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4071 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4072 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4073 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
|
4074 /* 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
|
4075 * 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
|
4076 * 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
|
4077 * The only alternative is to raise an Exception, |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4078 * which isn't really warranted. |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4079 */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4080 if (::GetLastError() != ERROR_BROKEN_PIPE) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4081 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4082 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4083 *pbytes = 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4084 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4085 return TRUE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4086 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4087 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4088 #define MAX_INPUT_EVENTS 2000 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4089 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4090 // 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
|
4091 // 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
|
4092 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4093 static int stdinAvailable(int fd, long *pbytes) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4094 HANDLE han; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4095 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
|
4096 DWORD numEvents = 0; /* Number of events in buffer */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4097 DWORD i = 0; /* Loop index */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4098 DWORD curLength = 0; /* Position marker */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4099 DWORD actualLength = 0; /* Number of bytes readable */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4100 BOOL error = FALSE; /* Error holder */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4101 INPUT_RECORD *lpBuffer; /* Pointer to records of input events */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4102 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4103 if ((han = ::GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4104 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4105 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4106 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4107 /* Construct an array of input records in the console buffer */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4108 error = ::GetNumberOfConsoleInputEvents(han, &numEvents); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4109 if (error == 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4110 return nonSeekAvailable(fd, pbytes); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4111 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4112 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4113 /* lpBuffer must fit into 64K or else PeekConsoleInput fails */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4114 if (numEvents > MAX_INPUT_EVENTS) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4115 numEvents = MAX_INPUT_EVENTS; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4116 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4117 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4118 lpBuffer = (INPUT_RECORD *)os::malloc(numEvents * sizeof(INPUT_RECORD)); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4119 if (lpBuffer == NULL) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4120 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4121 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4122 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4123 error = ::PeekConsoleInput(han, lpBuffer, numEvents, &numEventsRead); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4124 if (error == 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4125 os::free(lpBuffer); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4126 return FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4127 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4128 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4129 /* Examine input records for the number of bytes available */ |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4130 for(i=0; i<numEvents; i++) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4131 if (lpBuffer[i].EventType == KEY_EVENT) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4132 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4133 KEY_EVENT_RECORD *keyRecord = (KEY_EVENT_RECORD *) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4134 &(lpBuffer[i].Event); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4135 if (keyRecord->bKeyDown == TRUE) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4136 CHAR *keyPressed = (CHAR *) &(keyRecord->uChar); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4137 curLength++; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4138 if (*keyPressed == '\r') { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4139 actualLength = curLength; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4140 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4141 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4142 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4143 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4144 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4145 if(lpBuffer != NULL) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4146 os::free(lpBuffer); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4147 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4148 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4149 *pbytes = (long) actualLength; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4150 return TRUE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4151 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4152 |
| 0 | 4153 // Map a block of memory. |
| 4154 char* os::map_memory(int fd, const char* file_name, size_t file_offset, | |
| 4155 char *addr, size_t bytes, bool read_only, | |
| 4156 bool allow_exec) { | |
| 4157 HANDLE hFile; | |
| 4158 char* base; | |
| 4159 | |
| 4160 hFile = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, | |
| 4161 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); | |
| 4162 if (hFile == NULL) { | |
| 4163 if (PrintMiscellaneous && Verbose) { | |
| 4164 DWORD err = GetLastError(); | |
| 4165 tty->print_cr("CreateFile() failed: GetLastError->%ld."); | |
| 4166 } | |
| 4167 return NULL; | |
| 4168 } | |
| 4169 | |
| 4170 if (allow_exec) { | |
| 4171 // CreateFileMapping/MapViewOfFileEx can't map executable memory | |
| 4172 // unless it comes from a PE image (which the shared archive is not.) | |
| 4173 // Even VirtualProtect refuses to give execute access to mapped memory | |
| 4174 // that was not previously executable. | |
| 4175 // | |
| 4176 // Instead, stick the executable region in anonymous memory. Yuck. | |
| 4177 // Penalty is that ~4 pages will not be shareable - in the future | |
| 4178 // we might consider DLLizing the shared archive with a proper PE | |
| 4179 // header so that mapping executable + sharing is possible. | |
| 4180 | |
| 4181 base = (char*) VirtualAlloc(addr, bytes, MEM_COMMIT | MEM_RESERVE, | |
| 4182 PAGE_READWRITE); | |
| 4183 if (base == NULL) { | |
| 4184 if (PrintMiscellaneous && Verbose) { | |
| 4185 DWORD err = GetLastError(); | |
| 4186 tty->print_cr("VirtualAlloc() failed: GetLastError->%ld.", err); | |
| 4187 } | |
| 4188 CloseHandle(hFile); | |
| 4189 return NULL; | |
| 4190 } | |
| 4191 | |
| 4192 DWORD bytes_read; | |
| 4193 OVERLAPPED overlapped; | |
| 4194 overlapped.Offset = (DWORD)file_offset; | |
| 4195 overlapped.OffsetHigh = 0; | |
| 4196 overlapped.hEvent = NULL; | |
| 4197 // ReadFile guarantees that if the return value is true, the requested | |
| 4198 // number of bytes were read before returning. | |
| 4199 bool res = ReadFile(hFile, base, (DWORD)bytes, &bytes_read, &overlapped) != 0; | |
| 4200 if (!res) { | |
| 4201 if (PrintMiscellaneous && Verbose) { | |
| 4202 DWORD err = GetLastError(); | |
| 4203 tty->print_cr("ReadFile() failed: GetLastError->%ld.", err); | |
| 4204 } | |
| 4205 release_memory(base, bytes); | |
| 4206 CloseHandle(hFile); | |
| 4207 return NULL; | |
| 4208 } | |
| 4209 } else { | |
| 4210 HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, | |
| 4211 NULL /*file_name*/); | |
| 4212 if (hMap == NULL) { | |
| 4213 if (PrintMiscellaneous && Verbose) { | |
| 4214 DWORD err = GetLastError(); | |
| 4215 tty->print_cr("CreateFileMapping() failed: GetLastError->%ld."); | |
| 4216 } | |
| 4217 CloseHandle(hFile); | |
| 4218 return NULL; | |
| 4219 } | |
| 4220 | |
| 4221 DWORD access = read_only ? FILE_MAP_READ : FILE_MAP_COPY; | |
| 4222 base = (char*)MapViewOfFileEx(hMap, access, 0, (DWORD)file_offset, | |
| 4223 (DWORD)bytes, addr); | |
| 4224 if (base == NULL) { | |
| 4225 if (PrintMiscellaneous && Verbose) { | |
| 4226 DWORD err = GetLastError(); | |
| 4227 tty->print_cr("MapViewOfFileEx() failed: GetLastError->%ld.", err); | |
| 4228 } | |
| 4229 CloseHandle(hMap); | |
| 4230 CloseHandle(hFile); | |
| 4231 return NULL; | |
| 4232 } | |
| 4233 | |
| 4234 if (CloseHandle(hMap) == 0) { | |
| 4235 if (PrintMiscellaneous && Verbose) { | |
| 4236 DWORD err = GetLastError(); | |
| 4237 tty->print_cr("CloseHandle(hMap) failed: GetLastError->%ld.", err); | |
| 4238 } | |
| 4239 CloseHandle(hFile); | |
| 4240 return base; | |
| 4241 } | |
| 4242 } | |
| 4243 | |
| 4244 if (allow_exec) { | |
| 4245 DWORD old_protect; | |
| 4246 DWORD exec_access = read_only ? PAGE_EXECUTE_READ : PAGE_EXECUTE_READWRITE; | |
| 4247 bool res = VirtualProtect(base, bytes, exec_access, &old_protect) != 0; | |
| 4248 | |
| 4249 if (!res) { | |
| 4250 if (PrintMiscellaneous && Verbose) { | |
| 4251 DWORD err = GetLastError(); | |
| 4252 tty->print_cr("VirtualProtect() failed: GetLastError->%ld.", err); | |
| 4253 } | |
| 4254 // Don't consider this a hard error, on IA32 even if the | |
| 4255 // VirtualProtect fails, we should still be able to execute | |
| 4256 CloseHandle(hFile); | |
| 4257 return base; | |
| 4258 } | |
| 4259 } | |
| 4260 | |
| 4261 if (CloseHandle(hFile) == 0) { | |
| 4262 if (PrintMiscellaneous && Verbose) { | |
| 4263 DWORD err = GetLastError(); | |
| 4264 tty->print_cr("CloseHandle(hFile) failed: GetLastError->%ld.", err); | |
| 4265 } | |
| 4266 return base; | |
| 4267 } | |
| 4268 | |
| 4269 return base; | |
| 4270 } | |
| 4271 | |
| 4272 | |
| 4273 // Remap a block of memory. | |
| 4274 char* os::remap_memory(int fd, const char* file_name, size_t file_offset, | |
| 4275 char *addr, size_t bytes, bool read_only, | |
| 4276 bool allow_exec) { | |
| 4277 // This OS does not allow existing memory maps to be remapped so we | |
| 4278 // have to unmap the memory before we remap it. | |
| 4279 if (!os::unmap_memory(addr, bytes)) { | |
| 4280 return NULL; | |
| 4281 } | |
| 4282 | |
| 4283 // There is a very small theoretical window between the unmap_memory() | |
| 4284 // call above and the map_memory() call below where a thread in native | |
| 4285 // code may be able to access an address that is no longer mapped. | |
| 4286 | |
| 4287 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, | |
| 4288 allow_exec); | |
| 4289 } | |
| 4290 | |
| 4291 | |
| 4292 // Unmap a block of memory. | |
| 4293 // Returns true=success, otherwise false. | |
| 4294 | |
| 4295 bool os::unmap_memory(char* addr, size_t bytes) { | |
| 4296 BOOL result = UnmapViewOfFile(addr); | |
| 4297 if (result == 0) { | |
| 4298 if (PrintMiscellaneous && Verbose) { | |
| 4299 DWORD err = GetLastError(); | |
| 4300 tty->print_cr("UnmapViewOfFile() failed: GetLastError->%ld.", err); | |
| 4301 } | |
| 4302 return false; | |
| 4303 } | |
| 4304 return true; | |
| 4305 } | |
| 4306 | |
| 4307 void os::pause() { | |
| 4308 char filename[MAX_PATH]; | |
| 4309 if (PauseAtStartupFile && PauseAtStartupFile[0]) { | |
| 4310 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); | |
| 4311 } else { | |
| 4312 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); | |
| 4313 } | |
| 4314 | |
| 4315 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
| 4316 if (fd != -1) { | |
| 4317 struct stat buf; | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4318 ::close(fd); |
| 0 | 4319 while (::stat(filename, &buf) == 0) { |
| 4320 Sleep(100); | |
| 4321 } | |
| 4322 } else { | |
| 4323 jio_fprintf(stderr, | |
| 4324 "Could not open pause file '%s', continuing immediately.\n", filename); | |
| 4325 } | |
| 4326 } | |
| 4327 | |
| 4328 // An Event wraps a win32 "CreateEvent" kernel handle. | |
| 4329 // | |
| 4330 // We have a number of choices regarding "CreateEvent" win32 handle leakage: | |
| 4331 // | |
| 4332 // 1: When a thread dies return the Event to the EventFreeList, clear the ParkHandle | |
| 4333 // field, and call CloseHandle() on the win32 event handle. Unpark() would | |
| 4334 // need to be modified to tolerate finding a NULL (invalid) win32 event handle. | |
| 4335 // In addition, an unpark() operation might fetch the handle field, but the | |
| 4336 // event could recycle between the fetch and the SetEvent() operation. | |
| 4337 // SetEvent() would either fail because the handle was invalid, or inadvertently work, | |
| 4338 // as the win32 handle value had been recycled. In an ideal world calling SetEvent() | |
| 4339 // on an stale but recycled handle would be harmless, but in practice this might | |
| 4340 // confuse other non-Sun code, so it's not a viable approach. | |
| 4341 // | |
| 4342 // 2: Once a win32 event handle is associated with an Event, it remains associated | |
| 4343 // with the Event. The event handle is never closed. This could be construed | |
| 4344 // as handle leakage, but only up to the maximum # of threads that have been extant | |
| 4345 // at any one time. This shouldn't be an issue, as windows platforms typically | |
| 4346 // permit a process to have hundreds of thousands of open handles. | |
| 4347 // | |
| 4348 // 3: Same as (1), but periodically, at stop-the-world time, rundown the EventFreeList | |
| 4349 // and release unused handles. | |
| 4350 // | |
| 4351 // 4: Add a CRITICAL_SECTION to the Event to protect LD+SetEvent from LD;ST(null);CloseHandle. | |
| 4352 // It's not clear, however, that we wouldn't be trading one type of leak for another. | |
| 4353 // | |
| 4354 // 5. Use an RCU-like mechanism (Read-Copy Update). | |
| 4355 // Or perhaps something similar to Maged Michael's "Hazard pointers". | |
| 4356 // | |
| 4357 // We use (2). | |
| 4358 // | |
| 4359 // TODO-FIXME: | |
| 4360 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the objectmonitor implementation. | |
| 4361 // 2. Consider wrapping the WaitForSingleObject(Ex) calls in SEH try/finally blocks | |
| 4362 // to recover from (or at least detect) the dreaded Windows 841176 bug. | |
| 4363 // 3. Collapse the interrupt_event, the JSR166 parker event, and the objectmonitor ParkEvent | |
| 4364 // into a single win32 CreateEvent() handle. | |
| 4365 // | |
| 4366 // _Event transitions in park() | |
| 4367 // -1 => -1 : illegal | |
| 4368 // 1 => 0 : pass - return immediately | |
| 4369 // 0 => -1 : block | |
| 4370 // | |
| 4371 // _Event serves as a restricted-range semaphore : | |
| 4372 // -1 : thread is blocked | |
| 4373 // 0 : neutral - thread is running or ready | |
| 4374 // 1 : signaled - thread is running or ready | |
| 4375 // | |
| 4376 // Another possible encoding of _Event would be | |
| 4377 // with explicit "PARKED" and "SIGNALED" bits. | |
| 4378 | |
| 4379 int os::PlatformEvent::park (jlong Millis) { | |
| 4380 guarantee (_ParkHandle != NULL , "Invariant") ; | |
| 4381 guarantee (Millis > 0 , "Invariant") ; | |
| 4382 int v ; | |
| 4383 | |
| 4384 // CONSIDER: defer assigning a CreateEvent() handle to the Event until | |
| 4385 // the initial park() operation. | |
| 4386 | |
| 4387 for (;;) { | |
| 4388 v = _Event ; | |
| 4389 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
| 4390 } | |
| 4391 guarantee ((v == 0) || (v == 1), "invariant") ; | |
| 4392 if (v != 0) return OS_OK ; | |
| 4393 | |
| 4394 // Do this the hard way by blocking ... | |
| 4395 // TODO: consider a brief spin here, gated on the success of recent | |
| 4396 // spin attempts by this thread. | |
| 4397 // | |
| 4398 // We decompose long timeouts into series of shorter timed waits. | |
| 4399 // Evidently large timo values passed in WaitForSingleObject() are problematic on some | |
| 4400 // versions of Windows. See EventWait() for details. This may be superstition. Or not. | |
| 4401 // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time | |
| 4402 // with os::javaTimeNanos(). Furthermore, we assume that spurious returns from | |
| 4403 // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend | |
| 4404 // to happen early in the wait interval. Specifically, after a spurious wakeup (rv == | |
| 4405 // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate | |
| 4406 // for the already waited time. This policy does not admit any new outcomes. | |
| 4407 // In the future, however, we might want to track the accumulated wait time and | |
| 4408 // adjust Millis accordingly if we encounter a spurious wakeup. | |
| 4409 | |
| 4410 const int MAXTIMEOUT = 0x10000000 ; | |
| 4411 DWORD rv = WAIT_TIMEOUT ; | |
| 4412 while (_Event < 0 && Millis > 0) { | |
| 4413 DWORD prd = Millis ; // set prd = MAX (Millis, MAXTIMEOUT) | |
| 4414 if (Millis > MAXTIMEOUT) { | |
| 4415 prd = MAXTIMEOUT ; | |
| 4416 } | |
| 4417 rv = ::WaitForSingleObject (_ParkHandle, prd) ; | |
| 4418 assert (rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed") ; | |
| 4419 if (rv == WAIT_TIMEOUT) { | |
| 4420 Millis -= prd ; | |
| 4421 } | |
| 4422 } | |
| 4423 v = _Event ; | |
| 4424 _Event = 0 ; | |
| 4425 OrderAccess::fence() ; | |
| 4426 // If we encounter a nearly simultanous timeout expiry and unpark() | |
| 4427 // we return OS_OK indicating we awoke via unpark(). | |
| 4428 // Implementor's license -- returning OS_TIMEOUT would be equally valid, however. | |
| 4429 return (v >= 0) ? OS_OK : OS_TIMEOUT ; | |
| 4430 } | |
| 4431 | |
| 4432 void os::PlatformEvent::park () { | |
| 4433 guarantee (_ParkHandle != NULL, "Invariant") ; | |
| 4434 // Invariant: Only the thread associated with the Event/PlatformEvent | |
| 4435 // may call park(). | |
| 4436 int v ; | |
| 4437 for (;;) { | |
| 4438 v = _Event ; | |
| 4439 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; | |
| 4440 } | |
| 4441 guarantee ((v == 0) || (v == 1), "invariant") ; | |
| 4442 if (v != 0) return ; | |
| 4443 | |
| 4444 // Do this the hard way by blocking ... | |
| 4445 // TODO: consider a brief spin here, gated on the success of recent | |
| 4446 // spin attempts by this thread. | |
| 4447 while (_Event < 0) { | |
| 4448 DWORD rv = ::WaitForSingleObject (_ParkHandle, INFINITE) ; | |
| 4449 assert (rv == WAIT_OBJECT_0, "WaitForSingleObject failed") ; | |
| 4450 } | |
| 4451 | |
| 4452 // Usually we'll find _Event == 0 at this point, but as | |
| 4453 // an optional optimization we clear it, just in case can | |
| 4454 // multiple unpark() operations drove _Event up to 1. | |
| 4455 _Event = 0 ; | |
| 4456 OrderAccess::fence() ; | |
| 4457 guarantee (_Event >= 0, "invariant") ; | |
| 4458 } | |
| 4459 | |
| 4460 void os::PlatformEvent::unpark() { | |
| 4461 guarantee (_ParkHandle != NULL, "Invariant") ; | |
| 4462 int v ; | |
| 4463 for (;;) { | |
| 4464 v = _Event ; // Increment _Event if it's < 1. | |
| 4465 if (v > 0) { | |
| 4466 // If it's already signaled just return. | |
| 4467 // The LD of _Event could have reordered or be satisfied | |
| 4468 // by a read-aside from this processor's write buffer. | |
| 4469 // To avoid problems execute a barrier and then | |
| 4470 // ratify the value. A degenerate CAS() would also work. | |
| 4471 // Viz., CAS (v+0, &_Event, v) == v). | |
| 4472 OrderAccess::fence() ; | |
| 4473 if (_Event == v) return ; | |
| 4474 continue ; | |
| 4475 } | |
| 4476 if (Atomic::cmpxchg (v+1, &_Event, v) == v) break ; | |
| 4477 } | |
| 4478 if (v < 0) { | |
| 4479 ::SetEvent (_ParkHandle) ; | |
| 4480 } | |
| 4481 } | |
| 4482 | |
| 4483 | |
| 4484 // JSR166 | |
| 4485 // ------------------------------------------------------- | |
| 4486 | |
| 4487 /* | |
| 4488 * The Windows implementation of Park is very straightforward: Basic | |
| 4489 * operations on Win32 Events turn out to have the right semantics to | |
| 4490 * use them directly. We opportunistically resuse the event inherited | |
| 4491 * from Monitor. | |
| 4492 */ | |
| 4493 | |
| 4494 | |
| 4495 void Parker::park(bool isAbsolute, jlong time) { | |
| 4496 guarantee (_ParkEvent != NULL, "invariant") ; | |
| 4497 // First, demultiplex/decode time arguments | |
| 4498 if (time < 0) { // don't wait | |
| 4499 return; | |
| 4500 } | |
|
1865
1c352af0135d
6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
acorn
parents:
1681
diff
changeset
|
4501 else if (time == 0 && !isAbsolute) { |
| 0 | 4502 time = INFINITE; |
| 4503 } | |
| 4504 else if (isAbsolute) { | |
| 4505 time -= os::javaTimeMillis(); // convert to relative time | |
| 4506 if (time <= 0) // already elapsed | |
| 4507 return; | |
| 4508 } | |
| 4509 else { // relative | |
| 4510 time /= 1000000; // Must coarsen from nanos to millis | |
| 4511 if (time == 0) // Wait for the minimal time unit if zero | |
| 4512 time = 1; | |
| 4513 } | |
| 4514 | |
| 4515 JavaThread* thread = (JavaThread*)(Thread::current()); | |
| 4516 assert(thread->is_Java_thread(), "Must be JavaThread"); | |
| 4517 JavaThread *jt = (JavaThread *)thread; | |
| 4518 | |
| 4519 // Don't wait if interrupted or already triggered | |
| 4520 if (Thread::is_interrupted(thread, false) || | |
| 4521 WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) { | |
| 4522 ResetEvent(_ParkEvent); | |
| 4523 return; | |
| 4524 } | |
| 4525 else { | |
| 4526 ThreadBlockInVM tbivm(jt); | |
| 4527 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); | |
| 4528 jt->set_suspend_equivalent(); | |
| 4529 | |
| 4530 WaitForSingleObject(_ParkEvent, time); | |
| 4531 ResetEvent(_ParkEvent); | |
| 4532 | |
| 4533 // If externally suspended while waiting, re-suspend | |
| 4534 if (jt->handle_special_suspend_equivalent_condition()) { | |
| 4535 jt->java_suspend_self(); | |
| 4536 } | |
| 4537 } | |
| 4538 } | |
| 4539 | |
| 4540 void Parker::unpark() { | |
| 4541 guarantee (_ParkEvent != NULL, "invariant") ; | |
| 4542 SetEvent(_ParkEvent); | |
| 4543 } | |
| 4544 | |
| 4545 // Run the specified command in a separate process. Return its exit value, | |
| 4546 // or -1 on failure (e.g. can't create a new process). | |
| 4547 int os::fork_and_exec(char* cmd) { | |
| 4548 STARTUPINFO si; | |
| 4549 PROCESS_INFORMATION pi; | |
| 4550 | |
| 4551 memset(&si, 0, sizeof(si)); | |
| 4552 si.cb = sizeof(si); | |
| 4553 memset(&pi, 0, sizeof(pi)); | |
| 4554 BOOL rslt = CreateProcess(NULL, // executable name - use command line | |
| 4555 cmd, // command line | |
| 4556 NULL, // process security attribute | |
| 4557 NULL, // thread security attribute | |
| 4558 TRUE, // inherits system handles | |
| 4559 0, // no creation flags | |
| 4560 NULL, // use parent's environment block | |
| 4561 NULL, // use parent's starting directory | |
| 4562 &si, // (in) startup information | |
| 4563 &pi); // (out) process information | |
| 4564 | |
| 4565 if (rslt) { | |
| 4566 // Wait until child process exits. | |
| 4567 WaitForSingleObject(pi.hProcess, INFINITE); | |
| 4568 | |
| 4569 DWORD exit_code; | |
| 4570 GetExitCodeProcess(pi.hProcess, &exit_code); | |
| 4571 | |
| 4572 // Close process and thread handles. | |
| 4573 CloseHandle(pi.hProcess); | |
| 4574 CloseHandle(pi.hThread); | |
| 4575 | |
| 4576 return (int)exit_code; | |
| 4577 } else { | |
| 4578 return -1; | |
| 4579 } | |
| 4580 } | |
| 4581 | |
| 4582 //-------------------------------------------------------------------------------------------------- | |
| 4583 // Non-product code | |
| 4584 | |
| 4585 static int mallocDebugIntervalCounter = 0; | |
| 4586 static int mallocDebugCounter = 0; | |
| 4587 bool os::check_heap(bool force) { | |
| 4588 if (++mallocDebugCounter < MallocVerifyStart && !force) return true; | |
| 4589 if (++mallocDebugIntervalCounter >= MallocVerifyInterval || force) { | |
| 4590 // Note: HeapValidate executes two hardware breakpoints when it finds something | |
| 4591 // wrong; at these points, eax contains the address of the offending block (I think). | |
| 4592 // To get to the exlicit error message(s) below, just continue twice. | |
| 4593 HANDLE heap = GetProcessHeap(); | |
| 4594 { HeapLock(heap); | |
| 4595 PROCESS_HEAP_ENTRY phe; | |
| 4596 phe.lpData = NULL; | |
| 4597 while (HeapWalk(heap, &phe) != 0) { | |
| 4598 if ((phe.wFlags & PROCESS_HEAP_ENTRY_BUSY) && | |
| 4599 !HeapValidate(heap, 0, phe.lpData)) { | |
| 4600 tty->print_cr("C heap has been corrupted (time: %d allocations)", mallocDebugCounter); | |
| 4601 tty->print_cr("corrupted block near address %#x, length %d", phe.lpData, phe.cbData); | |
| 4602 fatal("corrupted C heap"); | |
| 4603 } | |
| 4604 } | |
| 4605 int err = GetLastError(); | |
| 4606 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
|
4607 fatal(err_msg("heap walk aborted with error %d", err)); |
| 0 | 4608 } |
| 4609 HeapUnlock(heap); | |
| 4610 } | |
| 4611 mallocDebugIntervalCounter = 0; | |
| 4612 } | |
| 4613 return true; | |
| 4614 } | |
| 4615 | |
| 4616 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4617 bool os::find(address addr, outputStream* st) { |
| 0 | 4618 // Nothing yet |
| 4619 return false; | |
| 4620 } | |
| 4621 | |
| 4622 LONG WINAPI os::win32::serialize_fault_filter(struct _EXCEPTION_POINTERS* e) { | |
| 4623 DWORD exception_code = e->ExceptionRecord->ExceptionCode; | |
| 4624 | |
| 4625 if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) { | |
| 4626 JavaThread* thread = (JavaThread*)ThreadLocalStorage::get_thread_slow(); | |
| 4627 PEXCEPTION_RECORD exceptionRecord = e->ExceptionRecord; | |
| 4628 address addr = (address) exceptionRecord->ExceptionInformation[1]; | |
| 4629 | |
| 4630 if (os::is_memory_serialize_page(thread, addr)) | |
| 4631 return EXCEPTION_CONTINUE_EXECUTION; | |
| 4632 } | |
| 4633 | |
| 4634 return EXCEPTION_CONTINUE_SEARCH; | |
| 4635 } | |
| 4636 | |
| 4637 static int getLastErrorString(char *buf, size_t len) | |
| 4638 { | |
| 4639 long errval; | |
| 4640 | |
| 4641 if ((errval = GetLastError()) != 0) | |
| 4642 { | |
| 4643 /* DOS error */ | |
| 4644 size_t n = (size_t)FormatMessage( | |
| 4645 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, | |
| 4646 NULL, | |
| 4647 errval, | |
| 4648 0, | |
| 4649 buf, | |
| 4650 (DWORD)len, | |
| 4651 NULL); | |
| 4652 if (n > 3) { | |
| 4653 /* Drop final '.', CR, LF */ | |
| 4654 if (buf[n - 1] == '\n') n--; | |
| 4655 if (buf[n - 1] == '\r') n--; | |
| 4656 if (buf[n - 1] == '.') n--; | |
| 4657 buf[n] = '\0'; | |
| 4658 } | |
| 4659 return (int)n; | |
| 4660 } | |
| 4661 | |
| 4662 if (errno != 0) | |
| 4663 { | |
| 4664 /* C runtime error that has no corresponding DOS error code */ | |
| 4665 const char *s = strerror(errno); | |
| 4666 size_t n = strlen(s); | |
| 4667 if (n >= len) n = len - 1; | |
| 4668 strncpy(buf, s, n); | |
| 4669 buf[n] = '\0'; | |
| 4670 return (int)n; | |
| 4671 } | |
| 4672 return 0; | |
| 4673 } | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4674 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4675 |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4676 // We don't build a headless jre for Windows |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4677 bool os::is_headless_jre() { return false; } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
4678 |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4679 // OS_SocketInterface |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4680 // Not used on Windows |
|
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 // OS_SocketInterface |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4683 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
|
4684 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
|
4685 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4686 typedef CRITICAL_SECTION mutex_t; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4687 #define mutexInit(m) InitializeCriticalSection(m) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4688 #define mutexDestroy(m) DeleteCriticalSection(m) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4689 #define mutexLock(m) EnterCriticalSection(m) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4690 #define mutexUnlock(m) LeaveCriticalSection(m) |
|
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 static bool sockfnptrs_initialized = FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4693 static mutex_t sockFnTableMutex; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4694 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4695 /* 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
|
4696 static bool winsock2Available = FALSE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4697 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4698 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4699 static void initSockFnTable() { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4700 int (PASCAL FAR* WSAStartupPtr)(WORD, LPWSADATA); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4701 WSADATA wsadata; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4702 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4703 ::mutexInit(&sockFnTableMutex); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4704 ::mutexLock(&sockFnTableMutex); |
|
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 if (sockfnptrs_initialized == FALSE) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4707 HMODULE hWinsock; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4708 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4709 /* 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
|
4710 hWinsock = ::LoadLibrary("ws2_32.dll"); |
|
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 if (hWinsock == NULL) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4713 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
|
4714 ::GetLastError()); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4715 return; |
|
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 /* 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
|
4719 WSAStartupPtr = (int (PASCAL FAR *)(WORD, LPWSADATA)) |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4720 ::GetProcAddress(hWinsock, "WSAStartup"); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4721 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4722 if (WSAStartupPtr(MAKEWORD(1,1), &wsadata) != 0) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4723 jio_fprintf(stderr, "Could not initialize Winsock\n"); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4724 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4725 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4726 get_host_by_name_fn |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4727 = (ws2_ifn_ptr_t*) GetProcAddress(hWinsock, "gethostbyname"); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4728 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4729 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4730 assert(get_host_by_name_fn != NULL, |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4731 "gethostbyname function not found"); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4732 sockfnptrs_initialized = TRUE; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4733 ::mutexUnlock(&sockFnTableMutex); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4734 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4735 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4736 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
|
4737 if (!sockfnptrs_initialized) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4738 initSockFnTable(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4739 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4740 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4741 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
|
4742 "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
|
4743 return (*get_host_by_name_fn)(name); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4744 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4745 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4746 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4747 int os::socket_close(int fd) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4748 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4749 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4750 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4751 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4752 int os::socket_available(int fd, jint *pbytes) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4753 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4754 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4755 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4756 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4757 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
|
4758 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4759 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4760 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4761 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4762 int os::listen(int fd, int count) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4763 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4764 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4765 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4766 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4767 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
|
4768 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4769 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4770 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4771 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4772 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
|
4773 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4774 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4775 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4776 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4777 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
|
4778 struct sockaddr *to, int tolen) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4779 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4780 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4781 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4782 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4783 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
|
4784 sockaddr *from, int *fromlen) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4785 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4786 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4787 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4788 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4789 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
|
4790 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4791 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4792 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4793 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4794 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
|
4795 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4796 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4797 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4798 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4799 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
|
4800 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4801 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4802 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4803 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4804 int os::timeout(int fd, long timeout) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4805 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4806 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4807 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4808 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4809 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
|
4810 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4811 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4812 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4813 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4814 int os::socket_shutdown(int fd, int howto) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4815 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4816 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4817 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4818 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4819 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
|
4820 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4821 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4822 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4823 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4824 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
|
4825 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4826 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4827 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4828 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4829 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
|
4830 char *optval, int* optlen) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4831 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4832 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4833 } |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4834 |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4835 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
|
4836 const char *optval, int optlen) { |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4837 ShouldNotReachHere(); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4838 return 0; |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
4839 } |