1 // { dg-do run } 2 // { dg-options "-pthread" } 3 // { dg-require-effective-target c++11 } 4 // { dg-require-effective-target pthread } 5 // { dg-require-gthreads "" } 6 7 // Copyright (C) 2014-2019 Free Software Foundation, Inc. 8 // 9 // This file is part of the GNU ISO C++ Library. This library is free 10 // software; you can redistribute it and/or modify it under the 11 // terms of the GNU General Public License as published by the 12 // Free Software Foundation; either version 3, or (at your option) 13 // any later version. 14 15 // This library is distributed in the hope that it will be useful, 16 // but WITHOUT ANY WARRANTY; without even the implied warranty of 17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 // GNU General Public License for more details. 19 20 // You should have received a copy of the GNU General Public License along 21 // with this library; see the file COPYING3. If not see 22 // <http://www.gnu.org/licenses/>. 23 24 #include <condition_variable> 25 #include <thread> 26 #include <mutex> 27 #include <testsuite_hooks.h> 28 29 std::mutex mx; 30 std::condition_variable cv; 31 int counter = 0; 32 33 struct Inc 34 { IncInc35 Inc() { ++counter; } ~IncInc36 ~Inc() { ++counter; } 37 }; 38 39 func()40void func() 41 { 42 std::unique_lock<std::mutex> lock{mx}; 43 std::notify_all_at_thread_exit(cv, std::move(lock)); 44 #if CORRECT_THREAD_LOCAL_DTORS 45 // Correct order of thread_local destruction needs __cxa_thread_atexit_impl 46 // or similar support from libc. 47 static thread_local 48 #endif 49 Inc inc; 50 } 51 main()52int main() 53 { 54 std::unique_lock<std::mutex> lock{mx}; 55 std::thread t{func}; 56 cv.wait(lock, [&]{ return counter == 2; }); 57 t.join(); 58 } 59