mirror of
https://github.com/autc04/Retro68.git
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94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
// Copyright (C) 2015-2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-rtems* *-*-darwin* powerpc-ibm-aix* } }
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// { dg-options "-pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* powerpc-ibm-aix* } }
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// { dg-require-effective-target c++11 }
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// { dg-require-cstdint "" }
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// { dg-require-gthreads "" }
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// { dg-require-time "" }
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#include <thread>
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#include <chrono>
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#include <atomic>
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#include <cstdint>
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#include <signal.h>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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std::this_thread::sleep_for(std::chrono::seconds(0));
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std::this_thread::sleep_for(std::chrono::seconds(-1));
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std::this_thread::sleep_for(std::chrono::duration<std::uint64_t>::zero());
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}
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void
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test02()
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{
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// test interruption of this_thread::sleep_for() by a signal
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struct sigaction sa{ };
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sa.sa_handler = +[](int) { };
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sigaction(SIGUSR1, &sa, 0);
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bool result = false;
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std::atomic<bool> sleeping{false};
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std::thread t([&result, &sleeping] {
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auto start = std::chrono::system_clock::now();
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auto time = std::chrono::seconds(3);
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sleeping = true;
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std::this_thread::sleep_for(time);
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result = std::chrono::system_clock::now() >= (start + time);
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});
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while (!sleeping) { }
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std::this_thread::sleep_for(std::chrono::milliseconds(500));
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pthread_kill(t.native_handle(), SIGUSR1);
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t.join();
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VERIFY( result );
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}
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struct slow_clock
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{
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using rep = std::chrono::system_clock::rep;
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using period = std::chrono::system_clock::period;
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using duration = std::chrono::system_clock::duration;
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using time_point = std::chrono::time_point<slow_clock, duration>;
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static constexpr bool is_steady = false;
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static time_point now()
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{
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auto real = std::chrono::system_clock::now();
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return time_point{real.time_since_epoch() / 2};
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}
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};
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void
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test03()
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{
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// test that this_thread::sleep_until() handles clock adjustments
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auto when = slow_clock::now() + std::chrono::seconds(2);
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std::this_thread::sleep_until(when);
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VERIFY( slow_clock::now() >= when );
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}
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int
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main()
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{
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test01();
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test02();
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test03();
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}
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