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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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245 return new PosixMemoryMappedFile(file, memory, size); | 245 return new PosixMemoryMappedFile(file, memory, size); |
246 } | 246 } |
247 | 247 |
248 | 248 |
249 PosixMemoryMappedFile::~PosixMemoryMappedFile() { | 249 PosixMemoryMappedFile::~PosixMemoryMappedFile() { |
250 if (memory_) munmap(memory_, size_); | 250 if (memory_) munmap(memory_, size_); |
251 fclose(file_); | 251 fclose(file_); |
252 } | 252 } |
253 | 253 |
254 | 254 |
255 #ifdef ENABLE_LOGGING_AND_PROFILING | |
256 static unsigned StringToLong(char* buffer) { | 255 static unsigned StringToLong(char* buffer) { |
257 return static_cast<unsigned>(strtol(buffer, NULL, 16)); // NOLINT | 256 return static_cast<unsigned>(strtol(buffer, NULL, 16)); // NOLINT |
258 } | 257 } |
259 #endif | |
260 | 258 |
261 | 259 |
262 void OS::LogSharedLibraryAddresses() { | 260 void OS::LogSharedLibraryAddresses() { |
263 #ifdef ENABLE_LOGGING_AND_PROFILING | |
264 static const int MAP_LENGTH = 1024; | 261 static const int MAP_LENGTH = 1024; |
265 int fd = open("/proc/self/maps", O_RDONLY); | 262 int fd = open("/proc/self/maps", O_RDONLY); |
266 if (fd < 0) return; | 263 if (fd < 0) return; |
267 while (true) { | 264 while (true) { |
268 char addr_buffer[11]; | 265 char addr_buffer[11]; |
269 addr_buffer[0] = '0'; | 266 addr_buffer[0] = '0'; |
270 addr_buffer[1] = 'x'; | 267 addr_buffer[1] = 'x'; |
271 addr_buffer[10] = 0; | 268 addr_buffer[10] = 0; |
272 int result = read(fd, addr_buffer + 2, 8); | 269 int result = read(fd, addr_buffer + 2, 8); |
273 if (result < 8) break; | 270 if (result < 8) break; |
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290 buffer[bytes_read] = 0; | 287 buffer[bytes_read] = 0; |
291 // Ignore mappings that are not executable. | 288 // Ignore mappings that are not executable. |
292 if (buffer[3] != 'x') continue; | 289 if (buffer[3] != 'x') continue; |
293 char* start_of_path = index(buffer, '/'); | 290 char* start_of_path = index(buffer, '/'); |
294 // There may be no filename in this line. Skip to next. | 291 // There may be no filename in this line. Skip to next. |
295 if (start_of_path == NULL) continue; | 292 if (start_of_path == NULL) continue; |
296 buffer[bytes_read] = 0; | 293 buffer[bytes_read] = 0; |
297 LOG(i::Isolate::Current(), SharedLibraryEvent(start_of_path, start, end)); | 294 LOG(i::Isolate::Current(), SharedLibraryEvent(start_of_path, start, end)); |
298 } | 295 } |
299 close(fd); | 296 close(fd); |
300 #endif | |
301 } | 297 } |
302 | 298 |
303 | 299 |
304 void OS::SignalCodeMovingGC() { | 300 void OS::SignalCodeMovingGC() { |
305 } | 301 } |
306 | 302 |
307 | 303 |
308 int OS::StackWalk(Vector<OS::StackFrame> frames) { | 304 int OS::StackWalk(Vector<OS::StackFrame> frames) { |
309 int frames_size = frames.length(); | 305 int frames_size = frames.length(); |
310 ScopedVector<void*> addresses(frames_size); | 306 ScopedVector<void*> addresses(frames_size); |
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567 CHECK(result == -1 && errno == EINTR); // Signal caused spurious wakeup. | 563 CHECK(result == -1 && errno == EINTR); // Signal caused spurious wakeup. |
568 } | 564 } |
569 } | 565 } |
570 | 566 |
571 | 567 |
572 Semaphore* OS::CreateSemaphore(int count) { | 568 Semaphore* OS::CreateSemaphore(int count) { |
573 return new FreeBSDSemaphore(count); | 569 return new FreeBSDSemaphore(count); |
574 } | 570 } |
575 | 571 |
576 | 572 |
577 #ifdef ENABLE_LOGGING_AND_PROFILING | |
578 | |
579 static pthread_t GetThreadID() { | 573 static pthread_t GetThreadID() { |
580 pthread_t thread_id = pthread_self(); | 574 pthread_t thread_id = pthread_self(); |
581 return thread_id; | 575 return thread_id; |
582 } | 576 } |
583 | 577 |
584 | 578 |
585 class Sampler::PlatformData : public Malloced { | 579 class Sampler::PlatformData : public Malloced { |
586 public: | 580 public: |
587 PlatformData() : vm_tid_(GetThreadID()) {} | 581 PlatformData() : vm_tid_(GetThreadID()) {} |
588 | 582 |
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796 SignalSender::AddActiveSampler(this); | 790 SignalSender::AddActiveSampler(this); |
797 } | 791 } |
798 | 792 |
799 | 793 |
800 void Sampler::Stop() { | 794 void Sampler::Stop() { |
801 ASSERT(IsActive()); | 795 ASSERT(IsActive()); |
802 SignalSender::RemoveActiveSampler(this); | 796 SignalSender::RemoveActiveSampler(this); |
803 SetActive(false); | 797 SetActive(false); |
804 } | 798 } |
805 | 799 |
806 #endif // ENABLE_LOGGING_AND_PROFILING | |
807 | 800 |
808 } } // namespace v8::internal | 801 } } // namespace v8::internal |
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