1 //===-------------------- condition_variable.cpp --------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "condition_variable"
12 #include "system_error"
15 _LIBCPP_BEGIN_NAMESPACE_STD
17 condition_variable::~condition_variable()
19 int e = pthread_cond_destroy(&__cv_);
24 condition_variable::notify_one()
26 pthread_cond_signal(&__cv_);
30 condition_variable::notify_all()
32 pthread_cond_broadcast(&__cv_);
36 condition_variable::wait(unique_lock<mutex>& lk)
39 __throw_system_error(EPERM,
40 "condition_variable::wait: mutex not locked");
41 int ec = pthread_cond_wait(&__cv_, lk.mutex()->native_handle());
43 __throw_system_error(ec, "condition_variable wait failed");
47 condition_variable::__do_timed_wait(unique_lock<mutex>& lk,
48 chrono::time_point<chrono::system_clock, chrono::nanoseconds> tp)
50 using namespace chrono;
52 __throw_system_error(EPERM,
53 "condition_variable::timed wait: mutex not locked");
54 nanoseconds d = tp.time_since_epoch();
56 seconds s = duration_cast<seconds>(d);
57 ts.tv_sec = static_cast<decltype(ts.tv_sec)>(s.count());
58 ts.tv_nsec = static_cast<decltype(ts.tv_nsec)>((d - s).count());
59 int ec = pthread_cond_timedwait(&__cv_, lk.mutex()->native_handle(), &ts);
60 if (ec != 0 && ec != ETIMEDOUT)
61 __throw_system_error(ec, "condition_variable timed_wait failed");
65 notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk)
67 __thread_local_data()->notify_all_at_thread_exit(&cond, lk.release());
70 _LIBCPP_END_NAMESPACE_STD