63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
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// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
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// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
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// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
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// { dg-require-cstdint "" }
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// { dg-require-gthreads "" }
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// Copyright (C) 2012-2014 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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#include <vector>
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#include <mutex>
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#include <condition_variable>
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#include <thread>
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// PR libstdc++/54185
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std::condition_variable* cond = nullptr;
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std::mutex mx;
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int started = 0;
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int constexpr NUM_THREADS = 10;
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void do_thread_a()
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{
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std::unique_lock<std::mutex> lock(mx);
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if(++started >= NUM_THREADS)
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{
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cond->notify_all();
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delete cond;
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cond = nullptr;
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}
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else
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cond->wait(lock);
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}
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int main(){
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std::vector<std::thread> vec;
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for(int j = 0; j < 1000; ++j)
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{
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started = 0;
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cond = new std::condition_variable;
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for (int i = 0; i < NUM_THREADS; ++i)
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vec.emplace_back(&do_thread_a);
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for (int i = 0; i < NUM_THREADS; ++i)
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vec[i].join();
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vec.clear();
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}
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}
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