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Issue 19490010: Avoid duplication of OS::Thread methods for every POSIX platform. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Tweaks Created 7 years, 5 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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470 return munmap(base, size) == 0; 470 return munmap(base, size) == 0;
471 } 471 }
472 472
473 473
474 bool VirtualMemory::HasLazyCommits() { 474 bool VirtualMemory::HasLazyCommits() {
475 // TODO(alph): implement for the platform. 475 // TODO(alph): implement for the platform.
476 return false; 476 return false;
477 } 477 }
478 478
479 479
480 class Thread::PlatformData : public Malloced {
481 public:
482 PlatformData() : thread_(kNoThread) {}
483
484 pthread_t thread_; // Thread handle for pthread.
485 };
486
487 Thread::Thread(const Options& options)
488 : data_(new PlatformData()),
489 stack_size_(options.stack_size()),
490 start_semaphore_(NULL) {
491 set_name(options.name());
492 }
493
494
495 Thread::~Thread() {
496 delete data_;
497 }
498
499
500 static void* ThreadEntry(void* arg) {
501 Thread* thread = reinterpret_cast<Thread*>(arg);
502 // This is also initialized by the first argument to pthread_create() but we
503 // don't know which thread will run first (the original thread or the new
504 // one) so we initialize it here too.
505 #ifdef PR_SET_NAME
506 prctl(PR_SET_NAME,
507 reinterpret_cast<unsigned long>(thread->name()), // NOLINT
508 0, 0, 0);
509 #endif
510 thread->data()->thread_ = pthread_self();
511 ASSERT(thread->data()->thread_ != kNoThread);
512 thread->NotifyStartedAndRun();
513 return NULL;
514 }
515
516
517 void Thread::set_name(const char* name) {
518 strncpy(name_, name, sizeof(name_));
519 name_[sizeof(name_) - 1] = '\0';
520 }
521
522
523 void Thread::Start() {
524 pthread_attr_t* attr_ptr = NULL;
525 pthread_attr_t attr;
526 if (stack_size_ > 0) {
527 pthread_attr_init(&attr);
528 pthread_attr_setstacksize(&attr, static_cast<size_t>(stack_size_));
529 attr_ptr = &attr;
530 }
531 pthread_create(&data_->thread_, attr_ptr, ThreadEntry, this);
532 ASSERT(data_->thread_ != kNoThread);
533 }
534
535
536 void Thread::Join() {
537 pthread_join(data_->thread_, NULL);
538 }
539
540
541 Thread::LocalStorageKey Thread::CreateThreadLocalKey() {
542 pthread_key_t key;
543 int result = pthread_key_create(&key, NULL);
544 USE(result);
545 ASSERT(result == 0);
546 return static_cast<LocalStorageKey>(key);
547 }
548
549
550 void Thread::DeleteThreadLocalKey(LocalStorageKey key) {
551 pthread_key_t pthread_key = static_cast<pthread_key_t>(key);
552 int result = pthread_key_delete(pthread_key);
553 USE(result);
554 ASSERT(result == 0);
555 }
556
557
558 void* Thread::GetThreadLocal(LocalStorageKey key) {
559 pthread_key_t pthread_key = static_cast<pthread_key_t>(key);
560 return pthread_getspecific(pthread_key);
561 }
562
563
564 void Thread::SetThreadLocal(LocalStorageKey key, void* value) {
565 pthread_key_t pthread_key = static_cast<pthread_key_t>(key);
566 pthread_setspecific(pthread_key, value);
567 }
568
569
570 class OpenBSDSemaphore : public Semaphore { 480 class OpenBSDSemaphore : public Semaphore {
571 public: 481 public:
572 explicit OpenBSDSemaphore(int count) { sem_init(&sem_, 0, count); } 482 explicit OpenBSDSemaphore(int count) { sem_init(&sem_, 0, count); }
573 virtual ~OpenBSDSemaphore() { sem_destroy(&sem_); } 483 virtual ~OpenBSDSemaphore() { sem_destroy(&sem_); }
574 484
575 virtual void Wait(); 485 virtual void Wait();
576 virtual bool Wait(int timeout); 486 virtual bool Wait(int timeout);
577 virtual void Signal() { sem_post(&sem_); } 487 virtual void Signal() { sem_post(&sem_); }
578 private: 488 private:
579 sem_t sem_; 489 sem_t sem_;
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643 limit_mutex = CreateMutex(); 553 limit_mutex = CreateMutex();
644 } 554 }
645 555
646 556
647 void OS::TearDown() { 557 void OS::TearDown() {
648 delete limit_mutex; 558 delete limit_mutex;
649 } 559 }
650 560
651 561
652 } } // namespace v8::internal 562 } } // namespace v8::internal
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