b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.0 KiB
C++
45 lines
1.0 KiB
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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <mutex>
|
|
|
|
// template <class Mutex> class unique_lock;
|
|
|
|
// void swap(unique_lock& u);
|
|
|
|
#include <mutex>
|
|
#include <cassert>
|
|
|
|
struct mutex
|
|
{
|
|
static int lock_count;
|
|
static int unlock_count;
|
|
void lock() {++lock_count;}
|
|
void unlock() {++unlock_count;}
|
|
};
|
|
|
|
int mutex::lock_count = 0;
|
|
int mutex::unlock_count = 0;
|
|
|
|
mutex m;
|
|
|
|
int main()
|
|
{
|
|
std::unique_lock<mutex> lk(m);
|
|
assert(lk.mutex() == &m);
|
|
assert(lk.owns_lock() == true);
|
|
assert(mutex::lock_count == 1);
|
|
assert(mutex::unlock_count == 0);
|
|
assert(lk.release() == &m);
|
|
assert(lk.mutex() == nullptr);
|
|
assert(lk.owns_lock() == false);
|
|
assert(mutex::lock_count == 1);
|
|
assert(mutex::unlock_count == 0);
|
|
}
|