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Issue 9666052: Landing for pliard@chromium.org: Remove static initializers in v8. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 8 years, 9 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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621 621
622 class SamplerThread : public Thread { 622 class SamplerThread : public Thread {
623 public: 623 public:
624 static const int kSamplerThreadStackSize = 64 * KB; 624 static const int kSamplerThreadStackSize = 64 * KB;
625 625
626 explicit SamplerThread(int interval) 626 explicit SamplerThread(int interval)
627 : Thread(Thread::Options("SamplerThread", kSamplerThreadStackSize)), 627 : Thread(Thread::Options("SamplerThread", kSamplerThreadStackSize)),
628 interval_(interval) {} 628 interval_(interval) {}
629 629
630 static void AddActiveSampler(Sampler* sampler) { 630 static void AddActiveSampler(Sampler* sampler) {
631 ScopedLock lock(mutex_); 631 ScopedLock lock(mutex_.Pointer());
632 SamplerRegistry::AddActiveSampler(sampler); 632 SamplerRegistry::AddActiveSampler(sampler);
633 if (instance_ == NULL) { 633 if (instance_ == NULL) {
634 instance_ = new SamplerThread(sampler->interval()); 634 instance_ = new SamplerThread(sampler->interval());
635 instance_->Start(); 635 instance_->Start();
636 } else { 636 } else {
637 ASSERT(instance_->interval_ == sampler->interval()); 637 ASSERT(instance_->interval_ == sampler->interval());
638 } 638 }
639 } 639 }
640 640
641 static void RemoveActiveSampler(Sampler* sampler) { 641 static void RemoveActiveSampler(Sampler* sampler) {
642 ScopedLock lock(mutex_); 642 ScopedLock lock(mutex_.Pointer());
643 SamplerRegistry::RemoveActiveSampler(sampler); 643 SamplerRegistry::RemoveActiveSampler(sampler);
644 if (SamplerRegistry::GetState() == SamplerRegistry::HAS_NO_SAMPLERS) { 644 if (SamplerRegistry::GetState() == SamplerRegistry::HAS_NO_SAMPLERS) {
645 RuntimeProfiler::StopRuntimeProfilerThreadBeforeShutdown(instance_); 645 RuntimeProfiler::StopRuntimeProfilerThreadBeforeShutdown(instance_);
646 delete instance_; 646 delete instance_;
647 instance_ = NULL; 647 instance_ = NULL;
648 } 648 }
649 } 649 }
650 650
651 // Implement Thread::Run(). 651 // Implement Thread::Run().
652 virtual void Run() { 652 virtual void Run() {
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718 sampler->SampleStack(sample); 718 sampler->SampleStack(sample);
719 sampler->Tick(sample); 719 sampler->Tick(sample);
720 } 720 }
721 ResumeThread(profiled_thread); 721 ResumeThread(profiled_thread);
722 } 722 }
723 723
724 const int interval_; 724 const int interval_;
725 RuntimeProfilerRateLimiter rate_limiter_; 725 RuntimeProfilerRateLimiter rate_limiter_;
726 726
727 // Protects the process wide state below. 727 // Protects the process wide state below.
728 static Mutex* mutex_; 728 static LazyMutex mutex_;
729 static SamplerThread* instance_; 729 static SamplerThread* instance_;
730 730
731 private: 731 private:
732 DISALLOW_COPY_AND_ASSIGN(SamplerThread); 732 DISALLOW_COPY_AND_ASSIGN(SamplerThread);
733 }; 733 };
734 734
735 735
736 Mutex* SamplerThread::mutex_ = OS::CreateMutex(); 736 LazyMutex SamplerThread::mutex_ = LAZY_MUTEX_INITIALIZER;
737 SamplerThread* SamplerThread::instance_ = NULL; 737 SamplerThread* SamplerThread::instance_ = NULL;
738 738
739 739
740 Sampler::Sampler(Isolate* isolate, int interval) 740 Sampler::Sampler(Isolate* isolate, int interval)
741 : isolate_(isolate), 741 : isolate_(isolate),
742 interval_(interval), 742 interval_(interval),
743 profiling_(false), 743 profiling_(false),
744 active_(false), 744 active_(false),
745 samples_taken_(0) { 745 samples_taken_(0) {
746 data_ = new PlatformData; 746 data_ = new PlatformData;
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761 761
762 762
763 void Sampler::Stop() { 763 void Sampler::Stop() {
764 ASSERT(IsActive()); 764 ASSERT(IsActive());
765 SamplerThread::RemoveActiveSampler(this); 765 SamplerThread::RemoveActiveSampler(this);
766 SetActive(false); 766 SetActive(false);
767 } 767 }
768 768
769 769
770 } } // namespace v8::internal 770 } } // namespace v8::internal
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