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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 646 } | 646 } |
| 647 | 647 |
| 648 | 648 |
| 649 class Thread::PlatformData : public Malloced { | 649 class Thread::PlatformData : public Malloced { |
| 650 public: | 650 public: |
| 651 PlatformData() : thread_(kNoThread) {} | 651 PlatformData() : thread_(kNoThread) {} |
| 652 | 652 |
| 653 pthread_t thread_; // Thread handle for pthread. | 653 pthread_t thread_; // Thread handle for pthread. |
| 654 }; | 654 }; |
| 655 | 655 |
| 656 Thread::Thread(Isolate* isolate, const Options& options) | 656 Thread::Thread(const Options& options) |
| 657 : data_(new PlatformData()), | 657 : data_(new PlatformData()), |
| 658 isolate_(isolate), | |
| 659 stack_size_(options.stack_size) { | 658 stack_size_(options.stack_size) { |
| 660 set_name(options.name); | 659 set_name(options.name); |
| 661 } | 660 } |
| 662 | 661 |
| 663 | 662 |
| 664 Thread::Thread(Isolate* isolate, const char* name) | 663 Thread::Thread(const char* name) |
| 665 : data_(new PlatformData()), | 664 : data_(new PlatformData()), |
| 666 isolate_(isolate), | |
| 667 stack_size_(0) { | 665 stack_size_(0) { |
| 668 set_name(name); | 666 set_name(name); |
| 669 } | 667 } |
| 670 | 668 |
| 671 | 669 |
| 672 Thread::~Thread() { | 670 Thread::~Thread() { |
| 673 delete data_; | 671 delete data_; |
| 674 } | 672 } |
| 675 | 673 |
| 676 | 674 |
| 677 static void* ThreadEntry(void* arg) { | 675 static void* ThreadEntry(void* arg) { |
| 678 Thread* thread = reinterpret_cast<Thread*>(arg); | 676 Thread* thread = reinterpret_cast<Thread*>(arg); |
| 679 // This is also initialized by the first argument to pthread_create() but we | 677 // This is also initialized by the first argument to pthread_create() but we |
| 680 // don't know which thread will run first (the original thread or the new | 678 // don't know which thread will run first (the original thread or the new |
| 681 // one) so we initialize it here too. | 679 // one) so we initialize it here too. |
| 682 prctl(PR_SET_NAME, | 680 prctl(PR_SET_NAME, |
| 683 reinterpret_cast<unsigned long>(thread->name()), // NOLINT | 681 reinterpret_cast<unsigned long>(thread->name()), // NOLINT |
| 684 0, 0, 0); | 682 0, 0, 0); |
| 685 thread->data()->thread_ = pthread_self(); | 683 thread->data()->thread_ = pthread_self(); |
| 686 ASSERT(thread->data()->thread_ != kNoThread); | 684 ASSERT(thread->data()->thread_ != kNoThread); |
| 687 Thread::SetThreadLocal(Isolate::isolate_key(), thread->isolate()); | |
| 688 thread->Run(); | 685 thread->Run(); |
| 689 return NULL; | 686 return NULL; |
| 690 } | 687 } |
| 691 | 688 |
| 692 | 689 |
| 693 void Thread::set_name(const char* name) { | 690 void Thread::set_name(const char* name) { |
| 694 strncpy(name_, name, sizeof(name_)); | 691 strncpy(name_, name, sizeof(name_)); |
| 695 name_[sizeof(name_) - 1] = '\0'; | 692 name_[sizeof(name_) - 1] = '\0'; |
| 696 } | 693 } |
| 697 | 694 |
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| 967 | 964 |
| 968 | 965 |
| 969 class SignalSender : public Thread { | 966 class SignalSender : public Thread { |
| 970 public: | 967 public: |
| 971 enum SleepInterval { | 968 enum SleepInterval { |
| 972 HALF_INTERVAL, | 969 HALF_INTERVAL, |
| 973 FULL_INTERVAL | 970 FULL_INTERVAL |
| 974 }; | 971 }; |
| 975 | 972 |
| 976 explicit SignalSender(int interval) | 973 explicit SignalSender(int interval) |
| 977 : Thread(NULL, "SignalSender"), | 974 : Thread("SignalSender"), |
| 978 vm_tgid_(getpid()), | 975 vm_tgid_(getpid()), |
| 979 interval_(interval) {} | 976 interval_(interval) {} |
| 980 | 977 |
| 981 static void InstallSignalHandler() { | 978 static void InstallSignalHandler() { |
| 982 struct sigaction sa; | 979 struct sigaction sa; |
| 983 sa.sa_sigaction = ProfilerSignalHandler; | 980 sa.sa_sigaction = ProfilerSignalHandler; |
| 984 sigemptyset(&sa.sa_mask); | 981 sigemptyset(&sa.sa_mask); |
| 985 sa.sa_flags = SA_RESTART | SA_SIGINFO; | 982 sa.sa_flags = SA_RESTART | SA_SIGINFO; |
| 986 signal_handler_installed_ = | 983 signal_handler_installed_ = |
| 987 (sigaction(SIGPROF, &sa, &old_signal_handler_) == 0); | 984 (sigaction(SIGPROF, &sa, &old_signal_handler_) == 0); |
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| 1148 | 1145 |
| 1149 void Sampler::Stop() { | 1146 void Sampler::Stop() { |
| 1150 ASSERT(IsActive()); | 1147 ASSERT(IsActive()); |
| 1151 SignalSender::RemoveActiveSampler(this); | 1148 SignalSender::RemoveActiveSampler(this); |
| 1152 SetActive(false); | 1149 SetActive(false); |
| 1153 } | 1150 } |
| 1154 | 1151 |
| 1155 #endif // ENABLE_LOGGING_AND_PROFILING | 1152 #endif // ENABLE_LOGGING_AND_PROFILING |
| 1156 | 1153 |
| 1157 } } // namespace v8::internal | 1154 } } // namespace v8::internal |
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