Louis Dionne 564628014c [libc++] Introduce an indirection to create threads in the test suite
We create threads using std::thread in various places in the test suite.
However, the usual std::thread constructor may not work on all platforms,
e.g. on platforms where passing a stack size is required to create a thread.

This commit introduces a simple indirection that makes it easier to tweak
how threads are created inside the test suite on various platforms. Note
that tests that are purposefully calling std::thread's constructor directly
(e.g. because that is what they're testing) were not modified.
2020-11-27 11:54:19 -05:00

69 lines
1.3 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: libcpp-has-no-threads
// <thread>
// class thread
// ~thread();
#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;
void f1()
{
std::_Exit(0);
}
int main(int, char**)
{
std::set_terminate(f1);
{
assert(G::n_alive == 0);
assert(!G::op_run);
G g;
{
std::thread t = support::make_test_thread(g);
std::this_thread::sleep_for(std::chrono::milliseconds(250));
}
}
assert(false);
return 0;
}