58 lines
1 KiB
C++
58 lines
1 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.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
// <condition_variable>
|
||
|
|
|
||
|
|
// class condition_variable_any;
|
||
|
|
|
||
|
|
// ~condition_variable_any();
|
||
|
|
|
||
|
|
#include <condition_variable>
|
||
|
|
#include <mutex>
|
||
|
|
#include <thread>
|
||
|
|
#include <cassert>
|
||
|
|
|
||
|
|
std::condition_variable_any* cv;
|
||
|
|
std::mutex m;
|
||
|
|
|
||
|
|
bool f_ready = false;
|
||
|
|
bool g_ready = false;
|
||
|
|
|
||
|
|
void f()
|
||
|
|
{
|
||
|
|
m.lock();
|
||
|
|
f_ready = true;
|
||
|
|
cv->notify_one();
|
||
|
|
delete cv;
|
||
|
|
m.unlock();
|
||
|
|
}
|
||
|
|
|
||
|
|
void g()
|
||
|
|
{
|
||
|
|
m.lock();
|
||
|
|
g_ready = true;
|
||
|
|
cv->notify_one();
|
||
|
|
while (!f_ready)
|
||
|
|
cv->wait(m);
|
||
|
|
m.unlock();
|
||
|
|
}
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
cv = new std::condition_variable_any;
|
||
|
|
std::thread th2(g);
|
||
|
|
m.lock();
|
||
|
|
while (!g_ready)
|
||
|
|
cv->wait(m);
|
||
|
|
m.unlock();
|
||
|
|
std::thread th1(f);
|
||
|
|
th1.join();
|
||
|
|
th2.join();
|
||
|
|
}
|