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//===----------------------------------------------------------------------===//
//
// 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
// UNSUPPORTED: c++98, c++03
// <future>
// class promise<R>
// template <class Allocator>
// promise(allocator_arg_t, const Allocator& a);
#include <future>
#include <cassert>
#include "test_allocator.h"
#include "min_allocator.h"
int main()
{
assert(test_alloc_base::alloc_count == 0);
{
std::promise<int> p(std::allocator_arg, test_allocator<int>(42));
assert(test_alloc_base::alloc_count == 1);
std::future<int> f = p.get_future();
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 0);
{
std::promise<int&> p(std::allocator_arg, test_allocator<int>(42));
assert(test_alloc_base::alloc_count == 1);
std::future<int&> f = p.get_future();
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 0);
{
std::promise<void> p(std::allocator_arg, test_allocator<void>(42));
assert(test_alloc_base::alloc_count == 1);
std::future<void> f = p.get_future();
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 0);
// Test with a minimal allocator
{
std::promise<int> p(std::allocator_arg, bare_allocator<void>());
std::future<int> f = p.get_future();
assert(f.valid());
}
{
std::promise<int&> p(std::allocator_arg, bare_allocator<void>());
std::future<int&> f = p.get_future();
assert(f.valid());
}
{
std::promise<void> p(std::allocator_arg, bare_allocator<void>());
std::future<void> f = p.get_future();
assert(f.valid());
}
// Test with a minimal allocator that returns class-type pointers
{
std::promise<int> p(std::allocator_arg, min_allocator<void>());
std::future<int> f = p.get_future();
assert(f.valid());
}
{
std::promise<int&> p(std::allocator_arg, min_allocator<void>());
std::future<int&> f = p.get_future();
assert(f.valid());
}
{
std::promise<void> p(std::allocator_arg, min_allocator<void>());
std::future<void> f = p.get_future();
assert(f.valid());
}
}
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