1// { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin1[1-9]* powerpc-ibm-aix* } } 2// { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } } 3// { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } } 4// { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-darwin* } } 5// { dg-require-cstdint "" } 6// { dg-require-gthreads "" } 7 8// Copyright (C) 2012-2015 Free Software Foundation, Inc. 9// 10// This file is part of the GNU ISO C++ Library. This library is free 11// software; you can redistribute it and/or modify it under the 12// terms of the GNU General Public License as published by the 13// Free Software Foundation; either version 3, or (at your option) 14// any later version. 15 16// This library is distributed in the hope that it will be useful, 17// but WITHOUT ANY WARRANTY; without even the implied warranty of 18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19// GNU General Public License for more details. 20 21// You should have received a copy of the GNU General Public License along 22// with this library; see the file COPYING3. If not see 23// <http://www.gnu.org/licenses/>. 24 25#include <vector> 26#include <mutex> 27#include <condition_variable> 28#include <thread> 29 30// PR libstdc++/54185 31 32std::condition_variable* cond = nullptr; 33std::mutex mx; 34int started = 0; 35int constexpr NUM_THREADS = 10; 36 37void do_thread_a() 38{ 39 std::unique_lock<std::mutex> lock(mx); 40 if(++started >= NUM_THREADS) 41 { 42 cond->notify_all(); 43 delete cond; 44 cond = nullptr; 45 } 46 else 47 cond->wait(lock); 48} 49 50int main(){ 51 std::vector<std::thread> vec; 52 for(int j = 0; j < 1000; ++j) 53 { 54 started = 0; 55 cond = new std::condition_variable; 56 for (int i = 0; i < NUM_THREADS; ++i) 57 vec.emplace_back(&do_thread_a); 58 for (int i = 0; i < NUM_THREADS; ++i) 59 vec[i].join(); 60 vec.clear(); 61 } 62} 63