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// Copyright (C) 2019-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do run }
// { dg-options "-pthread" }
// { dg-require-effective-target c++11 }
// { dg-require-effective-target pthread }
// { dg-require-gthreads "" }
#include <future>
#include <testsuite_rvalref.h>
struct F : __gnu_test::copycounter
{
F() = default;
F(const F&) = default;
// Move constructor copies base class, to use counter:
F(F&& f) : copycounter(f) { f.valid = false; }
void run() { VERIFY(this->valid); }
};
void
test01()
{
std::future<void> fut;
F::copycount = 0;
fut = std::async(&F::run, F{});
VERIFY( F::copycount == 1 );
fut.get();
VERIFY( F::copycount == 1 );
F::copycount = 0;
fut = std::async(std::launch::async, &F::run, F{});
VERIFY( F::copycount == 1 );
fut.get();
VERIFY( F::copycount == 1 );
F::copycount = 0;
fut = std::async(std::launch::deferred, &F::run, F{});
VERIFY( F::copycount == 1 );
fut.get();
VERIFY( F::copycount == 1 );
}
void
test02()
{
std::future<void> fut;
const F f;
F::copycount = 0;
fut = std::async(&F::run, f);
VERIFY( F::copycount == 1 );
fut.get();
VERIFY( F::copycount == 1 );
F::copycount = 0;
fut = std::async(std::launch::async, &F::run, f);
VERIFY( F::copycount == 1 );
fut.get();
VERIFY( F::copycount == 1 );
F::copycount = 0;
fut = std::async(std::launch::deferred, &F::run, f);
VERIFY( F::copycount == 1 );
fut.get();
VERIFY( F::copycount == 1 );
}
void
test03()
{
std::future<void> fut;
F f;
F::copycount = 0;
fut = std::async(&F::run, std::ref(f));
VERIFY( F::copycount == 0 );
fut.get();
VERIFY( F::copycount == 0 );
F::copycount = 0;
fut = std::async(std::launch::async, &F::run, std::ref(f));
VERIFY( F::copycount == 0 );
fut.get();
VERIFY( F::copycount == 0 );
F::copycount = 0;
fut = std::async(std::launch::deferred, &F::run, std::ref(f));
VERIFY( F::copycount == 0 );
fut.get();
VERIFY( F::copycount == 0 );
}
int
main()
{
test01();
test02();
test03();
}
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