blob: 9f0e60a5b9abc060c1c3e2dde84f2006ffc9fdc3 [file] [log] [blame]
// Copyright (C) 2019-2022 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-options "-std=gnu++2a" }
// { dg-add-options libatomic }
// { dg-do run { target c++2a } }
#include <stop_token>
#include <functional>
#include <testsuite_hooks.h>
void
test01()
{
bool called = false;
std::function<void()> f = [&called]{ called = true; };
std::stop_source ssrc;
ssrc.request_stop();
std::stop_token tok = ssrc.get_token();
std::stop_callback cb1(tok, f);
VERIFY( tok.stop_possible() );
VERIFY( f != nullptr );
VERIFY( called == true );
called = false;
std::stop_callback cb2(std::move(tok), f);
// when callback is executed immediately, no change in ownership:
VERIFY( tok.stop_possible() );
VERIFY( f != nullptr );
VERIFY( called == true );
std::stop_token sink(std::move(tok)); // leave tok empty
called = false;
std::stop_callback cb3(tok, f);
VERIFY( f != nullptr );
VERIFY( called == false );
called = false;
std::stop_callback cb4(std::move(tok), f);
VERIFY( f != nullptr );
VERIFY( called == false );
}
void
test02()
{
bool called = false;
std::function<void()> f0 = [&called]{ called = true; };
std::function<void()> f = f0;
std::stop_source ssrc;
ssrc.request_stop();
std::stop_token tok = ssrc.get_token();
std::stop_callback cb1(tok, std::move(f));
VERIFY( tok.stop_possible() );
VERIFY( f == nullptr );
VERIFY( called == true );
called = false;
f = f0;
std::stop_callback cb2(std::move(tok), std::move(f));
// when callback is executed immediately, no change in ownership:
VERIFY( tok.stop_possible() );
VERIFY( f == nullptr );
VERIFY( called == true );
std::stop_token sink(std::move(tok)); // leave tok empty
called = false;
f = f0;
std::stop_callback cb3(tok, std::move(f));
VERIFY( f == nullptr );
VERIFY( called == false );
called = false;
f = f0;
std::stop_callback cb4(std::move(tok), std::move(f));
VERIFY( f == nullptr );
VERIFY( called == false );
}
void
test03()
{
bool called[4] = { };
std::stop_source ssrc;
std::stop_token tok = ssrc.get_token();
std::stop_callback cb1(tok, [&]{ called[0] = true; });
VERIFY( tok.stop_possible() );
VERIFY( called[0] == false );
std::stop_callback cb2(std::move(tok), [&]{ called[1] = true; });
VERIFY( !tok.stop_possible() );
VERIFY( called[1] == false );
std::stop_callback cb3(tok, [&]{ called[2] = true; });
VERIFY( called[2] == false );
std::stop_callback cb4(std::move(tok), [&]{ called[3] = true; });
VERIFY( called[3] == false );
ssrc.request_stop();
VERIFY( called[0] == true );
VERIFY( called[1] == true );
VERIFY( called[2] == false );
VERIFY( called[3] == false );
}
int main()
{
test01();
test02();
test03();
}