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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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| 425 bool ThreadHandle::IsSelf() const { | 425 bool ThreadHandle::IsSelf() const { |
| 426 return pthread_equal(data_->thread_, pthread_self()); | 426 return pthread_equal(data_->thread_, pthread_self()); |
| 427 } | 427 } |
| 428 | 428 |
| 429 | 429 |
| 430 bool ThreadHandle::IsValid() const { | 430 bool ThreadHandle::IsValid() const { |
| 431 return data_->thread_ != kNoThread; | 431 return data_->thread_ != kNoThread; |
| 432 } | 432 } |
| 433 | 433 |
| 434 | 434 |
| 435 Thread::Thread(Isolate* isolate) | 435 Thread::Thread(Isolate* isolate, const Options& options) |
| 436 : ThreadHandle(ThreadHandle::INVALID), | 436 : ThreadHandle(ThreadHandle::INVALID), |
| 437 isolate_(isolate) { | 437 isolate_(isolate), |
| 438 set_name("v8:<unknown>"); | 438 stack_size_(options.stack_size) { |
| 439 set_name(options.name); |
| 439 } | 440 } |
| 440 | 441 |
| 441 | 442 |
| 442 Thread::Thread(Isolate* isolate, const char* name) | 443 Thread::Thread(Isolate* isolate, const char* name) |
| 443 : ThreadHandle(ThreadHandle::INVALID), | 444 : ThreadHandle(ThreadHandle::INVALID), |
| 444 isolate_(isolate) { | 445 isolate_(isolate), |
| 446 stack_size_(0) { |
| 445 set_name(name); | 447 set_name(name); |
| 446 } | 448 } |
| 447 | 449 |
| 448 | 450 |
| 449 Thread::~Thread() { | 451 Thread::~Thread() { |
| 450 } | 452 } |
| 451 | 453 |
| 452 | 454 |
| 453 | |
| 454 static void SetThreadName(const char* name) { | 455 static void SetThreadName(const char* name) { |
| 455 // pthread_setname_np is only available in 10.6 or later, so test | 456 // pthread_setname_np is only available in 10.6 or later, so test |
| 456 // for it at runtime. | 457 // for it at runtime. |
| 457 int (*dynamic_pthread_setname_np)(const char*); | 458 int (*dynamic_pthread_setname_np)(const char*); |
| 458 *reinterpret_cast<void**>(&dynamic_pthread_setname_np) = | 459 *reinterpret_cast<void**>(&dynamic_pthread_setname_np) = |
| 459 dlsym(RTLD_DEFAULT, "pthread_setname_np"); | 460 dlsym(RTLD_DEFAULT, "pthread_setname_np"); |
| 460 if (!dynamic_pthread_setname_np) | 461 if (!dynamic_pthread_setname_np) |
| 461 return; | 462 return; |
| 462 | 463 |
| 463 // Mac OS X does not expose the length limit of the name, so hardcode it. | 464 // Mac OS X does not expose the length limit of the name, so hardcode it. |
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| 482 } | 483 } |
| 483 | 484 |
| 484 | 485 |
| 485 void Thread::set_name(const char* name) { | 486 void Thread::set_name(const char* name) { |
| 486 strncpy(name_, name, sizeof(name_)); | 487 strncpy(name_, name, sizeof(name_)); |
| 487 name_[sizeof(name_) - 1] = '\0'; | 488 name_[sizeof(name_) - 1] = '\0'; |
| 488 } | 489 } |
| 489 | 490 |
| 490 | 491 |
| 491 void Thread::Start() { | 492 void Thread::Start() { |
| 492 pthread_create(&thread_handle_data()->thread_, NULL, ThreadEntry, this); | 493 pthread_attr_t* attr_ptr = NULL; |
| 494 pthread_attr_t attr; |
| 495 if (stack_size_ > 0) { |
| 496 pthread_attr_init(&attr); |
| 497 pthread_attr_setstacksize(&attr, static_cast<size_t>(stack_size_)); |
| 498 attr_ptr = &attr; |
| 499 } |
| 500 pthread_create(&thread_handle_data()->thread_, attr_ptr, ThreadEntry, this); |
| 501 ASSERT(IsValid()); |
| 493 } | 502 } |
| 494 | 503 |
| 495 | 504 |
| 496 void Thread::Join() { | 505 void Thread::Join() { |
| 497 pthread_join(thread_handle_data()->thread_, NULL); | 506 pthread_join(thread_handle_data()->thread_, NULL); |
| 498 } | 507 } |
| 499 | 508 |
| 500 | 509 |
| 501 Thread::LocalStorageKey Thread::CreateThreadLocalKey() { | 510 Thread::LocalStorageKey Thread::CreateThreadLocalKey() { |
| 502 pthread_key_t key; | 511 pthread_key_t key; |
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| 619 | 628 |
| 620 private: | 629 private: |
| 621 // Note: for profiled_thread_ Mach primitives are used instead of PThread's | 630 // Note: for profiled_thread_ Mach primitives are used instead of PThread's |
| 622 // because the latter doesn't provide thread manipulation primitives required. | 631 // because the latter doesn't provide thread manipulation primitives required. |
| 623 // For details, consult "Mac OS X Internals" book, Section 7.3. | 632 // For details, consult "Mac OS X Internals" book, Section 7.3. |
| 624 thread_act_t profiled_thread_; | 633 thread_act_t profiled_thread_; |
| 625 }; | 634 }; |
| 626 | 635 |
| 627 class SamplerThread : public Thread { | 636 class SamplerThread : public Thread { |
| 628 public: | 637 public: |
| 629 explicit SamplerThread(int interval) : Thread(NULL), interval_(interval) {} | 638 explicit SamplerThread(int interval) |
| 639 : Thread(NULL, "SamplerThread"), |
| 640 interval_(interval) {} |
| 630 | 641 |
| 631 static void AddActiveSampler(Sampler* sampler) { | 642 static void AddActiveSampler(Sampler* sampler) { |
| 632 ScopedLock lock(mutex_); | 643 ScopedLock lock(mutex_); |
| 633 SamplerRegistry::AddActiveSampler(sampler); | 644 SamplerRegistry::AddActiveSampler(sampler); |
| 634 if (instance_ == NULL) { | 645 if (instance_ == NULL) { |
| 635 instance_ = new SamplerThread(sampler->interval()); | 646 instance_ = new SamplerThread(sampler->interval()); |
| 636 instance_->Start(); | 647 instance_->Start(); |
| 637 } else { | 648 } else { |
| 638 ASSERT(instance_->interval_ == sampler->interval()); | 649 ASSERT(instance_->interval_ == sampler->interval()); |
| 639 } | 650 } |
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| 776 | 787 |
| 777 void Sampler::Stop() { | 788 void Sampler::Stop() { |
| 778 ASSERT(IsActive()); | 789 ASSERT(IsActive()); |
| 779 SamplerThread::RemoveActiveSampler(this); | 790 SamplerThread::RemoveActiveSampler(this); |
| 780 SetActive(false); | 791 SetActive(false); |
| 781 } | 792 } |
| 782 | 793 |
| 783 #endif // ENABLE_LOGGING_AND_PROFILING | 794 #endif // ENABLE_LOGGING_AND_PROFILING |
| 784 | 795 |
| 785 } } // namespace v8::internal | 796 } } // namespace v8::internal |
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