72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
// { dg-do run }
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// { dg-options "-pthread" }
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// { dg-require-effective-target c++11 }
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// { dg-require-effective-target pthread }
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// { dg-require-cstdint "" }
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// { dg-require-gthreads "" }
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// Copyright (C) 2010-2018 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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#include <future>
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#include <testsuite_hooks.h>
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struct sum {
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typedef int result_type;
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int operator()(int i, int& j, const int& k) { return i + j + k; }
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};
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void test01()
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{
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using namespace std;
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int a = 1;
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int b = 1;
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int c = 1;
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future<int> f1 = async(launch::deferred, sum(), a, ref(b), cref(c));
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a = 0;
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b = 10;
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c = 100;
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const std::chrono::seconds delay(10);
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const auto then = std::chrono::system_clock::now() + delay;
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VERIFY( f1.valid() );
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// timed waiting functions should return 'deferred' immediately
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VERIFY( f1.wait_until(then) == std::future_status::deferred );
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VERIFY( f1.wait_for(delay) == std::future_status::deferred );
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VERIFY( std::chrono::system_clock::now() < then );
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f1.wait();
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VERIFY( f1.valid() );
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// timed waiting functions should return 'ready' immediately
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VERIFY( f1.wait_until(then) == std::future_status::ready );
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VERIFY( f1.wait_for(delay) == std::future_status::ready );
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VERIFY( std::chrono::system_clock::now() < then );
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VERIFY( f1.get() == 111 );
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VERIFY( !f1.valid() );
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}
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int main()
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{
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test01();
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return 0;
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}
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