//===----------------------------------------------------------------------===//
//
// 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-exceptions
// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03
// <future>
// class shared_future<R>
// ~shared_future();
#include <future>
#include <cassert>
#include "test_macros.h"
#include "test_allocator.h"
int main(int, char**)
{
test_allocator_statistics alloc_stats;
assert(alloc_stats.alloc_count == 0);
{
typedef int T;
std::shared_future<T> f;
{
std::promise<T> p(std::allocator_arg, test_allocator<T>(&alloc_stats));
assert(alloc_stats.alloc_count == 1);
f = p.get_future();
assert(alloc_stats.alloc_count == 1);
assert(f.valid());
}
assert(alloc_stats.alloc_count == 1);
assert(f.valid());
}
assert(alloc_stats.alloc_count == 0);
{
typedef int& T;
std::shared_future<T> f;
{
std::promise<T> p(std::allocator_arg, test_allocator<int>(&alloc_stats));
assert(alloc_stats.alloc_count == 1);
f = p.get_future();
assert(alloc_stats.alloc_count == 1);
assert(f.valid());
}
assert(alloc_stats.alloc_count == 1);
assert(f.valid());
}
assert(alloc_stats.alloc_count == 0);
{
typedef void T;
std::shared_future<T> f;
{
std::promise<T> p(std::allocator_arg, test_allocator<T>(&alloc_stats));
assert(alloc_stats.alloc_count == 1);
f = p.get_future();
assert(alloc_stats.alloc_count == 1);
assert(f.valid());
}
assert(alloc_stats.alloc_count == 1);
assert(f.valid());
}
assert(alloc_stats.alloc_count == 0);
return 0;
}