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// Copyright (C) 2015 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 { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-rtems* *-*-darwin* powerpc-ibm-aix* } }
// { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
// { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } }
// { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-rtems* *-*-darwin* } }
// { dg-require-cstdint "" }
// { dg-require-gthreads "" }
// { dg-require-time "" }
#include <thread>
#include <chrono>
#include <atomic>
#include <cstdint>
#include <signal.h>
#include <testsuite_hooks.h>
void
test01()
{
std::this_thread::sleep_for(std::chrono::seconds(0));
std::this_thread::sleep_for(std::chrono::seconds(-1));
std::this_thread::sleep_for(std::chrono::duration<std::uint64_t>::zero());
}
void
test02()
{
bool test __attribute__((unused)) = true;
// test interruption of this_thread::sleep_for() by a signal
struct sigaction sa{ };
sa.sa_handler = +[](int) { };
sigaction(SIGUSR1, &sa, 0);
bool result = false;
std::atomic<bool> sleeping{false};
std::thread t([&result, &sleeping] {
auto start = std::chrono::system_clock::now();
auto time = std::chrono::seconds(3);
sleeping = true;
std::this_thread::sleep_for(time);
result = std::chrono::system_clock::now() >= (start + time);
});
while (!sleeping) { }
std::this_thread::sleep_for(std::chrono::milliseconds(500));
pthread_kill(t.native_handle(), SIGUSR1);
t.join();
VERIFY( result );
}
struct slow_clock
{
using rep = std::chrono::system_clock::rep;
using period = std::chrono::system_clock::period;
using duration = std::chrono::system_clock::duration;
using time_point = std::chrono::time_point<slow_clock, duration>;
static constexpr bool is_steady = false;
static time_point now()
{
auto real = std::chrono::system_clock::now();
return time_point{real.time_since_epoch() / 2};
}
};
void
test03()
{
bool test __attribute__((unused)) = true;
// test that this_thread::sleep_until() handles clock adjustments
auto when = slow_clock::now() + std::chrono::seconds(2);
std::this_thread::sleep_until(when);
VERIFY( slow_clock::now() >= when );
}
int
main()
{
test01();
test02();
test03();
}
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