Mercurial > hg > CbC > CbC_gcc
view libstdc++-v3/testsuite/30_threads/async/sync.cc @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 84e7813d76e9 |
children |
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// { dg-do run } // { dg-options "-pthread" } // { dg-require-effective-target c++11 } // { dg-require-effective-target pthread } // { dg-require-gthreads "" } // Copyright (C) 2010-2020 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/>. #include <future> #include <testsuite_hooks.h> struct sum { typedef int result_type; int operator()(int i, int& j, const int& k) { return i + j + k; } }; void test01() { using namespace std; int a = 1; int b = 1; int c = 1; future<int> f1 = async(launch::deferred, sum(), a, ref(b), cref(c)); a = 0; b = 10; c = 100; const std::chrono::seconds delay(10); const auto then = std::chrono::system_clock::now() + delay; VERIFY( f1.valid() ); // timed waiting functions should return 'deferred' immediately VERIFY( f1.wait_until(then) == std::future_status::deferred ); VERIFY( f1.wait_for(delay) == std::future_status::deferred ); VERIFY( std::chrono::system_clock::now() < then ); f1.wait(); VERIFY( f1.valid() ); // timed waiting functions should return 'ready' immediately VERIFY( f1.wait_until(then) == std::future_status::ready ); VERIFY( f1.wait_for(delay) == std::future_status::ready ); VERIFY( std::chrono::system_clock::now() < then ); VERIFY( f1.get() == 111 ); VERIFY( !f1.valid() ); } int main() { test01(); return 0; }