blob: fd80ee99c96827f870df523531833cd5ae2fff38 [file] [log] [blame]
//===----------------------------------------------------------------------===//
//
// 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
// <condition_variable>
// class condition_variable;
// void notify_all();
#include <condition_variable>
#include <mutex>
#include <thread>
#include <cassert>
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()
{
std::thread t1(f1);
std::thread t2(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);
}