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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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| 391 kMmapFd, kMmapFdOffset) != MAP_FAILED; | 391 kMmapFd, kMmapFdOffset) != MAP_FAILED; |
| 392 } | 392 } |
| 393 | 393 |
| 394 | 394 |
| 395 class Thread::PlatformData : public Malloced { | 395 class Thread::PlatformData : public Malloced { |
| 396 public: | 396 public: |
| 397 PlatformData() : thread_(kNoThread) {} | 397 PlatformData() : thread_(kNoThread) {} |
| 398 pthread_t thread_; // Thread handle for pthread. | 398 pthread_t thread_; // Thread handle for pthread. |
| 399 }; | 399 }; |
| 400 | 400 |
| 401 Thread::Thread(Isolate* isolate, const Options& options) | 401 Thread::Thread(const Options& options) |
| 402 : data_(new PlatformData), | 402 : data_(new PlatformData), |
| 403 isolate_(isolate), | |
| 404 stack_size_(options.stack_size) { | 403 stack_size_(options.stack_size) { |
| 405 set_name(options.name); | 404 set_name(options.name); |
| 406 } | 405 } |
| 407 | 406 |
| 408 | 407 |
| 409 Thread::Thread(Isolate* isolate, const char* name) | 408 Thread::Thread(const char* name) |
| 410 : data_(new PlatformData), | 409 : data_(new PlatformData), |
| 411 isolate_(isolate), | |
| 412 stack_size_(0) { | 410 stack_size_(0) { |
| 413 set_name(name); | 411 set_name(name); |
| 414 } | 412 } |
| 415 | 413 |
| 416 | 414 |
| 417 Thread::~Thread() { | 415 Thread::~Thread() { |
| 418 delete data_; | 416 delete data_; |
| 419 } | 417 } |
| 420 | 418 |
| 421 | 419 |
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| 437 | 435 |
| 438 | 436 |
| 439 static void* ThreadEntry(void* arg) { | 437 static void* ThreadEntry(void* arg) { |
| 440 Thread* thread = reinterpret_cast<Thread*>(arg); | 438 Thread* thread = reinterpret_cast<Thread*>(arg); |
| 441 // This is also initialized by the first argument to pthread_create() but we | 439 // This is also initialized by the first argument to pthread_create() but we |
| 442 // don't know which thread will run first (the original thread or the new | 440 // don't know which thread will run first (the original thread or the new |
| 443 // one) so we initialize it here too. | 441 // one) so we initialize it here too. |
| 444 thread->data()->thread_ = pthread_self(); | 442 thread->data()->thread_ = pthread_self(); |
| 445 SetThreadName(thread->name()); | 443 SetThreadName(thread->name()); |
| 446 ASSERT(thread->data()->thread_ != kNoThread); | 444 ASSERT(thread->data()->thread_ != kNoThread); |
| 447 Thread::SetThreadLocal(Isolate::isolate_key(), thread->isolate()); | |
| 448 thread->Run(); | 445 thread->Run(); |
| 449 return NULL; | 446 return NULL; |
| 450 } | 447 } |
| 451 | 448 |
| 452 | 449 |
| 453 void Thread::set_name(const char* name) { | 450 void Thread::set_name(const char* name) { |
| 454 strncpy(name_, name, sizeof(name_)); | 451 strncpy(name_, name, sizeof(name_)); |
| 455 name_[sizeof(name_) - 1] = '\0'; | 452 name_[sizeof(name_) - 1] = '\0'; |
| 456 } | 453 } |
| 457 | 454 |
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| 663 private: | 660 private: |
| 664 // Note: for profiled_thread_ Mach primitives are used instead of PThread's | 661 // Note: for profiled_thread_ Mach primitives are used instead of PThread's |
| 665 // because the latter doesn't provide thread manipulation primitives required. | 662 // because the latter doesn't provide thread manipulation primitives required. |
| 666 // For details, consult "Mac OS X Internals" book, Section 7.3. | 663 // For details, consult "Mac OS X Internals" book, Section 7.3. |
| 667 thread_act_t profiled_thread_; | 664 thread_act_t profiled_thread_; |
| 668 }; | 665 }; |
| 669 | 666 |
| 670 class SamplerThread : public Thread { | 667 class SamplerThread : public Thread { |
| 671 public: | 668 public: |
| 672 explicit SamplerThread(int interval) | 669 explicit SamplerThread(int interval) |
| 673 : Thread(NULL, "SamplerThread"), | 670 : Thread("SamplerThread"), |
| 674 interval_(interval) {} | 671 interval_(interval) {} |
| 675 | 672 |
| 676 static void AddActiveSampler(Sampler* sampler) { | 673 static void AddActiveSampler(Sampler* sampler) { |
| 677 ScopedLock lock(mutex_); | 674 ScopedLock lock(mutex_); |
| 678 SamplerRegistry::AddActiveSampler(sampler); | 675 SamplerRegistry::AddActiveSampler(sampler); |
| 679 if (instance_ == NULL) { | 676 if (instance_ == NULL) { |
| 680 instance_ = new SamplerThread(sampler->interval()); | 677 instance_ = new SamplerThread(sampler->interval()); |
| 681 instance_->Start(); | 678 instance_->Start(); |
| 682 } else { | 679 } else { |
| 683 ASSERT(instance_->interval_ == sampler->interval()); | 680 ASSERT(instance_->interval_ == sampler->interval()); |
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| 821 | 818 |
| 822 void Sampler::Stop() { | 819 void Sampler::Stop() { |
| 823 ASSERT(IsActive()); | 820 ASSERT(IsActive()); |
| 824 SamplerThread::RemoveActiveSampler(this); | 821 SamplerThread::RemoveActiveSampler(this); |
| 825 SetActive(false); | 822 SetActive(false); |
| 826 } | 823 } |
| 827 | 824 |
| 828 #endif // ENABLE_LOGGING_AND_PROFILING | 825 #endif // ENABLE_LOGGING_AND_PROFILING |
| 829 | 826 |
| 830 } } // namespace v8::internal | 827 } } // namespace v8::internal |
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