forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
34 lines
935 B
C++
34 lines
935 B
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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++98, c++03, c++11
|
|
|
|
// <shared_mutex>
|
|
|
|
// template <class Mutex> class shared_lock;
|
|
|
|
// bool owns_lock() const noexcept;
|
|
|
|
#include <shared_mutex>
|
|
#include <cassert>
|
|
|
|
std::shared_timed_mutex m;
|
|
|
|
int main()
|
|
{
|
|
std::shared_lock<std::shared_timed_mutex> lk0;
|
|
assert(lk0.owns_lock() == false);
|
|
std::shared_lock<std::shared_timed_mutex> lk1(m);
|
|
assert(lk1.owns_lock() == true);
|
|
lk1.unlock();
|
|
assert(lk1.owns_lock() == false);
|
|
static_assert(noexcept(lk0.owns_lock()), "owns_lock must be noexcept");
|
|
}
|