diff options
Diffstat (limited to 'test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp')
-rw-r--r-- | test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp b/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp new file mode 100644 index 000000000000..9bf7a79e3400 --- /dev/null +++ b/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp @@ -0,0 +1,50 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// UNSUPPORTED: libcpp-has-no-threads +// UNSUPPORTED: c++03, c++98, c++11, c++14 + +// <shared_mutex> + +// class shared_mutex; + +// void lock(); + +#include <shared_mutex> +#include <thread> +#include <cstdlib> +#include <cassert> + + +std::shared_mutex m; + +typedef std::chrono::system_clock Clock; +typedef Clock::time_point time_point; +typedef Clock::duration duration; +typedef std::chrono::milliseconds ms; +typedef std::chrono::nanoseconds ns; + +void f() +{ + time_point t0 = Clock::now(); + m.lock(); + time_point t1 = Clock::now(); + m.unlock(); + ns d = t1 - t0 - ms(250); + assert(d < ms(50)); // within 50ms +} + +int main() +{ + m.lock(); + std::thread t(f); + std::this_thread::sleep_for(ms(250)); + m.unlock(); + t.join(); +} |