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