74 lines
1.5 KiB
C++
74 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// UNSUPPORTED: no-threads
|
|
|
|
// <condition_variable>
|
|
|
|
// class condition_variable;
|
|
|
|
// void notify_all();
|
|
|
|
#include <condition_variable>
|
|
#include <mutex>
|
|
#include <thread>
|
|
#include <cassert>
|
|
|
|
#include "make_test_thread.h"
|
|
#include "test_macros.h"
|
|
|
|
std::condition_variable cv;
|
|
std::mutex mut;
|
|
|
|
int test0 = 0;
|
|
int test1 = 0;
|
|
int test2 = 0;
|
|
|
|
void f1()
|
|
{
|
|
std::unique_lock<std::mutex> lk(mut);
|
|
assert(test1 == 0);
|
|
while (test1 == 0)
|
|
cv.wait(lk);
|
|
assert(test1 == 1);
|
|
test1 = 2;
|
|
}
|
|
|
|
void f2()
|
|
{
|
|
std::unique_lock<std::mutex> lk(mut);
|
|
assert(test2 == 0);
|
|
while (test2 == 0)
|
|
cv.wait(lk);
|
|
assert(test2 == 1);
|
|
test2 = 2;
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
std::thread t1 = support::make_test_thread(f1);
|
|
std::thread t2 = support::make_test_thread(f2);
|
|
std::this_thread::sleep_for(std::chrono::milliseconds(100));
|
|
{
|
|
std::unique_lock<std::mutex>lk(mut);
|
|
test1 = 1;
|
|
test2 = 1;
|
|
}
|
|
cv.notify_all();
|
|
{
|
|
std::this_thread::sleep_for(std::chrono::milliseconds(100));
|
|
std::unique_lock<std::mutex>lk(mut);
|
|
}
|
|
t1.join();
|
|
t2.join();
|
|
assert(test1 == 2);
|
|
assert(test2 == 2);
|
|
|
|
return 0;
|
|
}
|