//===----------------------------------------------------------------------===//
//
// 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
// <thread>
// class thread
// void swap(thread& t);
#include <thread>
#include <new>
#include <cstdlib>
#include <cassert>
#include "make_test_thread.h"
#include "test_macros.h"
class G
{
int alive_;
public:
static int n_alive;
static bool op_run;
G() : alive_(1) {++n_alive;}
G(const G& g) : alive_(g.alive_) {++n_alive;}
~G() {alive_ = 0; --n_alive;}
void operator()()
{
assert(alive_ == 1);
assert(n_alive >= 1);
op_run = true;
}
};
int G::n_alive = 0;
bool G::op_run = false;
int main(int, char**)
{
{
G g;
std::thread t0 = support::make_test_thread(g);
std::thread::id id0 = t0.get_id();
std::thread t1;
std::thread::id id1 = t1.get_id();
t0.swap(t1);
assert(t0.get_id() == id1);
assert(t1.get_id() == id0);
t1.join();
}
return 0;
}