| // Copyright (C) 2015-2021 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-do run } |
| // { dg-options "-pthread" } |
| // { dg-require-effective-target c++11 } |
| // { dg-require-effective-target pthread } |
| // { dg-require-cstdint "" } |
| // { dg-require-gthreads "" } |
| // { dg-require-time "" } |
| // { dg-require-sleep "" } |
| |
| #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() |
| { |
| // 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); |
| sleeping = false; |
| }); |
| while (!sleeping) |
| { |
| // Wait for the thread to start sleeping. |
| } |
| while (sleeping) |
| { |
| // The sleeping thread should finish eventually, |
| // even if continually interrupted after less than a second: |
| 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() |
| { |
| // 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(); |
| } |