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// Copyright (C) 2019-2021 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 <testsuite_hooks.h>
void
test01()
{
std::stop_source ssrc;
std::stop_token tok = ssrc.get_token();
VERIFY(tok.stop_possible());
VERIFY(!tok.stop_requested());
std::stop_token copy(tok);
VERIFY(copy == tok);
VERIFY(copy.stop_possible());
VERIFY(!copy.stop_requested());
VERIFY(tok.stop_possible());
VERIFY(!tok.stop_requested());
std::stop_token move(std::move(tok));
VERIFY(move != tok);
VERIFY(move == copy);
VERIFY(move.stop_possible());
VERIFY(!move.stop_requested());
VERIFY(!tok.stop_possible());
VERIFY(!tok.stop_requested());
VERIFY(copy.stop_possible());
VERIFY(!copy.stop_requested());
ssrc.request_stop();
VERIFY(move.stop_possible());
VERIFY(move.stop_requested());
VERIFY(!tok.stop_possible());
VERIFY(!tok.stop_requested());
VERIFY(copy.stop_possible());
VERIFY(copy.stop_requested());
tok.swap(move);
VERIFY(tok == copy);
VERIFY(!move.stop_possible());
VERIFY(!move.stop_requested());
VERIFY(tok.stop_possible());
VERIFY(tok.stop_requested());
VERIFY(copy.stop_possible());
VERIFY(copy.stop_requested());
swap(move, copy);
VERIFY(tok == move);
VERIFY(move.stop_possible());
VERIFY(move.stop_requested());
VERIFY(tok.stop_possible());
VERIFY(tok.stop_requested());
VERIFY(!copy.stop_possible());
VERIFY(!copy.stop_requested());
}
void
test02()
{
std::stop_source src1, src2;
std::stop_token tok = src1.get_token();
VERIFY(tok.stop_possible());
VERIFY(!tok.stop_requested());
std::stop_token copy = src2.get_token();
VERIFY(copy != tok);
copy = tok;
VERIFY(copy == tok);
copy = src2.get_token();
VERIFY(copy != tok);
}
void
test03()
{
// create stop_source
std::stop_source ssrc;
VERIFY(ssrc.stop_possible());
VERIFY(!ssrc.stop_requested());
// create stop_token from stop_source
std::stop_token stok{ssrc.get_token()};
VERIFY(ssrc.stop_possible());
VERIFY(!ssrc.stop_requested());
VERIFY(stok.stop_possible());
VERIFY(!stok.stop_requested());
// register callback
bool cb1called{false};
auto cb1 = [&]{
cb1called = true;
};
{
std::stop_callback scb1{stok, cb1};
VERIFY(ssrc.stop_possible());
VERIFY(!ssrc.stop_requested());
VERIFY(stok.stop_possible());
VERIFY(!stok.stop_requested());
VERIFY(!cb1called);
} // unregister callback
// register another callback
bool cb2called{false};
auto cb2 = [&]{
VERIFY(stok.stop_requested());
cb2called = true;
};
std::stop_callback scb2a{stok, cb2}; // copies cb2
// std::stop_callback scb2b{stok, std::move(cb2)};
VERIFY(ssrc.stop_possible());
VERIFY(!ssrc.stop_requested());
VERIFY(stok.stop_possible());
VERIFY(!stok.stop_requested());
VERIFY(!cb1called);
VERIFY(!cb2called);
// request stop
auto b = ssrc.request_stop();
VERIFY(b);
VERIFY(ssrc.stop_possible());
VERIFY(ssrc.stop_requested());
VERIFY(stok.stop_possible());
VERIFY(stok.stop_requested());
VERIFY(!cb1called);
VERIFY(cb2called);
b = ssrc.request_stop();
VERIFY(!b);
// register another callback
bool cb3called{false};
std::stop_callback scb3{stok, [&]
{
cb3called = true;
}};
VERIFY(ssrc.stop_possible());
VERIFY(ssrc.stop_requested());
VERIFY(stok.stop_possible());
VERIFY(stok.stop_requested());
VERIFY(!cb1called);
VERIFY(cb2called);
VERIFY(cb3called);
}
int main()
{
test01();
test02();
test03();
}
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