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| 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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| 38 #include <ucontext.h> // walkstack(), getcontext() | 38 #include <ucontext.h> // walkstack(), getcontext() |
| 39 #include <dlfcn.h> // dladdr | 39 #include <dlfcn.h> // dladdr |
| 40 #include <pthread.h> | 40 #include <pthread.h> |
| 41 #include <sched.h> // for sched_yield | 41 #include <sched.h> // for sched_yield |
| 42 #include <semaphore.h> | 42 #include <semaphore.h> |
| 43 #include <time.h> | 43 #include <time.h> |
| 44 #include <sys/time.h> // gettimeofday(), timeradd() | 44 #include <sys/time.h> // gettimeofday(), timeradd() |
| 45 #include <errno.h> | 45 #include <errno.h> |
| 46 #include <ieeefp.h> // finite() | 46 #include <ieeefp.h> // finite() |
| 47 #include <signal.h> // sigemptyset(), etc | 47 #include <signal.h> // sigemptyset(), etc |
| 48 #include <sys/kdi_regs.h> | 48 #include <sys/regset.h> |
| 49 | 49 |
| 50 | 50 |
| 51 #undef MAP_TYPE | 51 #undef MAP_TYPE |
| 52 | 52 |
| 53 #include "v8.h" | 53 #include "v8.h" |
| 54 | 54 |
| 55 #include "platform.h" | 55 #include "platform.h" |
| 56 #include "vm-state-inl.h" | 56 #include "vm-state-inl.h" |
| 57 | 57 |
| 58 | 58 |
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| 625 | 625 |
| 626 TickSample sample_obj; | 626 TickSample sample_obj; |
| 627 TickSample* sample = CpuProfiler::TickSampleEvent(); | 627 TickSample* sample = CpuProfiler::TickSampleEvent(); |
| 628 if (sample == NULL) sample = &sample_obj; | 628 if (sample == NULL) sample = &sample_obj; |
| 629 | 629 |
| 630 // Extracting the sample from the context is extremely machine dependent. | 630 // Extracting the sample from the context is extremely machine dependent. |
| 631 ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context); | 631 ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(context); |
| 632 mcontext_t& mcontext = ucontext->uc_mcontext; | 632 mcontext_t& mcontext = ucontext->uc_mcontext; |
| 633 sample->state = Top::current_vm_state(); | 633 sample->state = Top::current_vm_state(); |
| 634 | 634 |
| 635 #if V8_HOST_ARCH_IA32 | 635 sample->pc = reinterpret_cast<Address>(mcontext.gregs[REG_PC]); |
| 636 sample->pc = reinterpret_cast<Address>(mcontext.gregs[KDIREG_EIP]); | 636 sample->sp = reinterpret_cast<Address>(mcontext.gregs[REG_SP]); |
| 637 sample->sp = reinterpret_cast<Address>(mcontext.gregs[KDIREG_ESP]); | 637 sample->fp = reinterpret_cast<Address>(mcontext.gregs[REG_FP]); |
| 638 sample->fp = reinterpret_cast<Address>(mcontext.gregs[KDIREG_EBP]); | 638 |
| 639 #elif V8_HOST_ARCH_X64 | |
| 640 sample->pc = reinterpret_cast<Address>(mcontext.gregs[KDIREG_RIP]); | |
| 641 sample->sp = reinterpret_cast<Address>(mcontext.gregs[KDIREG_RSP]); | |
| 642 sample->fp = reinterpret_cast<Address>(mcontext.gregs[KDIREG_RBP]); | |
| 643 #else | |
| 644 UNIMPLEMENTED(); | |
| 645 #endif | |
| 646 active_sampler_->SampleStack(sample); | 639 active_sampler_->SampleStack(sample); |
| 647 active_sampler_->Tick(sample); | 640 active_sampler_->Tick(sample); |
| 648 } | 641 } |
| 649 | 642 |
| 650 | 643 |
| 651 class Sampler::PlatformData : public Malloced { | 644 class Sampler::PlatformData : public Malloced { |
| 652 public: | 645 public: |
| 653 enum SleepInterval { | 646 enum SleepInterval { |
| 654 FULL_INTERVAL, | 647 FULL_INTERVAL, |
| 655 HALF_INTERVAL | 648 HALF_INTERVAL |
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| 783 data_->signal_handler_installed_ = false; | 776 data_->signal_handler_installed_ = false; |
| 784 } | 777 } |
| 785 | 778 |
| 786 // This sampler is no longer the active sampler. | 779 // This sampler is no longer the active sampler. |
| 787 active_sampler_ = NULL; | 780 active_sampler_ = NULL; |
| 788 } | 781 } |
| 789 | 782 |
| 790 #endif // ENABLE_LOGGING_AND_PROFILING | 783 #endif // ENABLE_LOGGING_AND_PROFILING |
| 791 | 784 |
| 792 } } // namespace v8::internal | 785 } } // namespace v8::internal |
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