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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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727 return; | 727 return; |
728 } | 728 } |
729 if (v8::Locker::IsActive() && | 729 if (v8::Locker::IsActive() && |
730 !isolate->thread_manager()->IsLockedByCurrentThread()) { | 730 !isolate->thread_manager()->IsLockedByCurrentThread()) { |
731 return; | 731 return; |
732 } | 732 } |
733 | 733 |
734 Sampler* sampler = isolate->logger()->sampler(); | 734 Sampler* sampler = isolate->logger()->sampler(); |
735 if (sampler == NULL || !sampler->IsActive()) return; | 735 if (sampler == NULL || !sampler->IsActive()) return; |
736 | 736 |
737 TickSample sample_obj; | 737 TickSample* sample = CpuProfiler::StartTickSampleEvent(isolate); |
738 TickSample* sample = CpuProfiler::TickSampleEvent(isolate); | 738 if (sample == NULL) return; |
739 if (sample == NULL) sample = &sample_obj; | |
740 | 739 |
741 // Extracting the sample from the context is extremely machine dependent. | 740 // Extracting the sample from the context is extremely machine dependent. |
742 sample->state = isolate->current_vm_state(); | 741 sample->state = isolate->current_vm_state(); |
743 ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context); | 742 ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context); |
744 #ifdef __NetBSD__ | 743 #ifdef __NetBSD__ |
745 mcontext_t& mcontext = ucontext->uc_mcontext; | 744 mcontext_t& mcontext = ucontext->uc_mcontext; |
746 #if V8_HOST_ARCH_IA32 | 745 #if V8_HOST_ARCH_IA32 |
747 sample->pc = reinterpret_cast<Address>(mcontext.__gregs[_REG_EIP]); | 746 sample->pc = reinterpret_cast<Address>(mcontext.__gregs[_REG_EIP]); |
748 sample->sp = reinterpret_cast<Address>(mcontext.__gregs[_REG_ESP]); | 747 sample->sp = reinterpret_cast<Address>(mcontext.__gregs[_REG_ESP]); |
749 sample->fp = reinterpret_cast<Address>(mcontext.__gregs[_REG_EBP]); | 748 sample->fp = reinterpret_cast<Address>(mcontext.__gregs[_REG_EBP]); |
750 #elif V8_HOST_ARCH_X64 | 749 #elif V8_HOST_ARCH_X64 |
751 sample->pc = reinterpret_cast<Address>(mcontext.__gregs[_REG_RIP]); | 750 sample->pc = reinterpret_cast<Address>(mcontext.__gregs[_REG_RIP]); |
752 sample->sp = reinterpret_cast<Address>(mcontext.__gregs[_REG_RSP]); | 751 sample->sp = reinterpret_cast<Address>(mcontext.__gregs[_REG_RSP]); |
753 sample->fp = reinterpret_cast<Address>(mcontext.__gregs[_REG_RBP]); | 752 sample->fp = reinterpret_cast<Address>(mcontext.__gregs[_REG_RBP]); |
754 #endif // V8_HOST_ARCH | 753 #endif // V8_HOST_ARCH |
755 #else // OpenBSD | 754 #else // OpenBSD |
756 #if V8_HOST_ARCH_IA32 | 755 #if V8_HOST_ARCH_IA32 |
757 sample->pc = reinterpret_cast<Address>(ucontext->sc_eip); | 756 sample->pc = reinterpret_cast<Address>(ucontext->sc_eip); |
758 sample->sp = reinterpret_cast<Address>(ucontext->sc_esp); | 757 sample->sp = reinterpret_cast<Address>(ucontext->sc_esp); |
759 sample->fp = reinterpret_cast<Address>(ucontext->sc_ebp); | 758 sample->fp = reinterpret_cast<Address>(ucontext->sc_ebp); |
760 #elif V8_HOST_ARCH_X64 | 759 #elif V8_HOST_ARCH_X64 |
761 sample->pc = reinterpret_cast<Address>(ucontext->sc_rip); | 760 sample->pc = reinterpret_cast<Address>(ucontext->sc_rip); |
762 sample->sp = reinterpret_cast<Address>(ucontext->sc_rsp); | 761 sample->sp = reinterpret_cast<Address>(ucontext->sc_rsp); |
763 sample->fp = reinterpret_cast<Address>(ucontext->sc_rbp); | 762 sample->fp = reinterpret_cast<Address>(ucontext->sc_rbp); |
764 #endif // V8_HOST_ARCH | 763 #endif // V8_HOST_ARCH |
765 #endif // __NetBSD__ | 764 #endif // __NetBSD__ |
766 sampler->SampleStack(sample); | 765 sampler->SampleStack(sample); |
767 sampler->Tick(sample); | 766 sampler->Tick(sample); |
| 767 CpuProfiler::FinishTickSampleEvent(isolate); |
768 } | 768 } |
769 | 769 |
770 | 770 |
771 class Sampler::PlatformData : public Malloced { | 771 class Sampler::PlatformData : public Malloced { |
772 public: | 772 public: |
773 PlatformData() : vm_tid_(GetThreadID()) {} | 773 PlatformData() : vm_tid_(GetThreadID()) {} |
774 | 774 |
775 pthread_t vm_tid() const { return vm_tid_; } | 775 pthread_t vm_tid() const { return vm_tid_; } |
776 | 776 |
777 private: | 777 private: |
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980 | 980 |
981 | 981 |
982 void Sampler::Stop() { | 982 void Sampler::Stop() { |
983 ASSERT(IsActive()); | 983 ASSERT(IsActive()); |
984 SignalSender::RemoveActiveSampler(this); | 984 SignalSender::RemoveActiveSampler(this); |
985 SetActive(false); | 985 SetActive(false); |
986 } | 986 } |
987 | 987 |
988 | 988 |
989 } } // namespace v8::internal | 989 } } // namespace v8::internal |
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