mirror of
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68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
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// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
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// { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
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// { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } }
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// { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-darwin* } }
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// { dg-require-cstdint "" }
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// { dg-require-gthreads "" }
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// { dg-require-atomic-builtins "" }
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// Copyright (C) 2014 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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// libstdc++/60966
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// This test hangs if std::promise::~promise() destroys the
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// shared state before std::promise::set_value() finishes using it.
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#include <future>
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#include <thread>
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#include <vector>
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const int THREADS = 10;
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void run_task(std::promise<void>* pr)
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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pr->set_value();
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}
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int main()
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{
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std::vector<std::promise<void>*> tasks(THREADS);
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std::vector<std::thread> threads(THREADS);
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std::vector<std::future<void>> futures(THREADS);
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for (int i = 0; i < THREADS; ++i)
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{
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std::promise<void>* task = new std::promise<void>;
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tasks[i] = task;
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futures[i] = task->get_future();
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threads[i] = std::thread(run_task, task);
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}
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for (int i = 0; i < THREADS; ++i)
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{
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// the temporary future releases the state as soon as wait() returns
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std::future<void>(std::move(futures[i])).wait();
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// state is ready, should now be safe to delete promise, so it
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// releases the shared state too
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delete tasks[i];
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}
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for (auto& t : threads)
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t.join();
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}
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