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| 1 // Copyright 2006-2011 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2011 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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| 243 return new PosixMemoryMappedFile(file, memory, size); | 243 return new PosixMemoryMappedFile(file, memory, size); |
| 244 } | 244 } |
| 245 | 245 |
| 246 | 246 |
| 247 PosixMemoryMappedFile::~PosixMemoryMappedFile() { | 247 PosixMemoryMappedFile::~PosixMemoryMappedFile() { |
| 248 if (memory_) munmap(memory_, size_); | 248 if (memory_) munmap(memory_, size_); |
| 249 fclose(file_); | 249 fclose(file_); |
| 250 } | 250 } |
| 251 | 251 |
| 252 | 252 |
| 253 #ifdef ENABLE_LOGGING_AND_PROFILING | |
| 254 static unsigned StringToLong(char* buffer) { | 253 static unsigned StringToLong(char* buffer) { |
| 255 return static_cast<unsigned>(strtol(buffer, NULL, 16)); // NOLINT | 254 return static_cast<unsigned>(strtol(buffer, NULL, 16)); // NOLINT |
| 256 } | 255 } |
| 257 #endif | |
| 258 | 256 |
| 259 | 257 |
| 260 void OS::LogSharedLibraryAddresses() { | 258 void OS::LogSharedLibraryAddresses() { |
| 261 #ifdef ENABLE_LOGGING_AND_PROFILING | |
| 262 static const int MAP_LENGTH = 1024; | 259 static const int MAP_LENGTH = 1024; |
| 263 int fd = open("/proc/self/maps", O_RDONLY); | 260 int fd = open("/proc/self/maps", O_RDONLY); |
| 264 if (fd < 0) return; | 261 if (fd < 0) return; |
| 265 while (true) { | 262 while (true) { |
| 266 char addr_buffer[11]; | 263 char addr_buffer[11]; |
| 267 addr_buffer[0] = '0'; | 264 addr_buffer[0] = '0'; |
| 268 addr_buffer[1] = 'x'; | 265 addr_buffer[1] = 'x'; |
| 269 addr_buffer[10] = 0; | 266 addr_buffer[10] = 0; |
| 270 int result = read(fd, addr_buffer + 2, 8); | 267 int result = read(fd, addr_buffer + 2, 8); |
| 271 if (result < 8) break; | 268 if (result < 8) break; |
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| 288 buffer[bytes_read] = 0; | 285 buffer[bytes_read] = 0; |
| 289 // Ignore mappings that are not executable. | 286 // Ignore mappings that are not executable. |
| 290 if (buffer[3] != 'x') continue; | 287 if (buffer[3] != 'x') continue; |
| 291 char* start_of_path = index(buffer, '/'); | 288 char* start_of_path = index(buffer, '/'); |
| 292 // There may be no filename in this line. Skip to next. | 289 // There may be no filename in this line. Skip to next. |
| 293 if (start_of_path == NULL) continue; | 290 if (start_of_path == NULL) continue; |
| 294 buffer[bytes_read] = 0; | 291 buffer[bytes_read] = 0; |
| 295 LOG(i::Isolate::Current(), SharedLibraryEvent(start_of_path, start, end)); | 292 LOG(i::Isolate::Current(), SharedLibraryEvent(start_of_path, start, end)); |
| 296 } | 293 } |
| 297 close(fd); | 294 close(fd); |
| 298 #endif | |
| 299 } | 295 } |
| 300 | 296 |
| 301 | 297 |
| 302 void OS::SignalCodeMovingGC() { | 298 void OS::SignalCodeMovingGC() { |
| 303 } | 299 } |
| 304 | 300 |
| 305 | 301 |
| 306 int OS::StackWalk(Vector<OS::StackFrame> frames) { | 302 int OS::StackWalk(Vector<OS::StackFrame> frames) { |
| 307 int frames_size = frames.length(); | 303 int frames_size = frames.length(); |
| 308 ScopedVector<void*> addresses(frames_size); | 304 ScopedVector<void*> addresses(frames_size); |
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| 569 to--; | 565 to--; |
| 570 } | 566 } |
| 571 } | 567 } |
| 572 | 568 |
| 573 | 569 |
| 574 Semaphore* OS::CreateSemaphore(int count) { | 570 Semaphore* OS::CreateSemaphore(int count) { |
| 575 return new OpenBSDSemaphore(count); | 571 return new OpenBSDSemaphore(count); |
| 576 } | 572 } |
| 577 | 573 |
| 578 | 574 |
| 579 #ifdef ENABLE_LOGGING_AND_PROFILING | |
| 580 | |
| 581 static pthread_t GetThreadID() { | 575 static pthread_t GetThreadID() { |
| 582 pthread_t thread_id = pthread_self(); | 576 pthread_t thread_id = pthread_self(); |
| 583 return thread_id; | 577 return thread_id; |
| 584 } | 578 } |
| 585 | 579 |
| 586 | 580 |
| 587 class Sampler::PlatformData : public Malloced { | 581 class Sampler::PlatformData : public Malloced { |
| 588 public: | 582 public: |
| 589 PlatformData() : vm_tid_(GetThreadID()) {} | 583 PlatformData() : vm_tid_(GetThreadID()) {} |
| 590 | 584 |
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| 797 SignalSender::AddActiveSampler(this); | 791 SignalSender::AddActiveSampler(this); |
| 798 } | 792 } |
| 799 | 793 |
| 800 | 794 |
| 801 void Sampler::Stop() { | 795 void Sampler::Stop() { |
| 802 ASSERT(IsActive()); | 796 ASSERT(IsActive()); |
| 803 SignalSender::RemoveActiveSampler(this); | 797 SignalSender::RemoveActiveSampler(this); |
| 804 SetActive(false); | 798 SetActive(false); |
| 805 } | 799 } |
| 806 | 800 |
| 807 #endif // ENABLE_LOGGING_AND_PROFILING | |
| 808 | 801 |
| 809 } } // namespace v8::internal | 802 } } // namespace v8::internal |
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