| // { dg-do run } |
| // { dg-additional-options "-pthread" { target pthread } } |
| // { dg-require-effective-target c++11 } |
| // { dg-require-gthreads "" } |
| |
| // Copyright (C) 2012-2023 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 <vector> |
| #include <mutex> |
| #include <condition_variable> |
| #include <thread> |
| |
| // PR libstdc++/54185 |
| |
| std::condition_variable* cond = nullptr; |
| std::mutex mx; |
| int started = 0; |
| int constexpr NUM_THREADS = 10; |
| |
| void do_thread_a() |
| { |
| std::unique_lock<std::mutex> lock(mx); |
| if(++started >= NUM_THREADS) |
| { |
| cond->notify_all(); |
| delete cond; |
| cond = nullptr; |
| } |
| else |
| cond->wait(lock); |
| } |
| |
| int main(){ |
| std::vector<std::thread> vec; |
| for(int j = 0; j < 1000; ++j) |
| { |
| started = 0; |
| cond = new std::condition_variable; |
| for (int i = 0; i < NUM_THREADS; ++i) |
| vec.emplace_back(&do_thread_a); |
| for (int i = 0; i < NUM_THREADS; ++i) |
| vec[i].join(); |
| vec.clear(); |
| } |
| } |