libcxx/test/std/thread/thread.condition/thread.condition.condvar/destructor.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // UNSUPPORTED: no-threads
  10
  11 // <condition_variable>
  12
  13 // class condition_variable;
  14
  15 // ~condition_variable();
  16
  17 #include <condition_variable>
  18 #include <mutex>
  19 #include <thread>
  20 #include <cassert>
  21
  22 #include "make_test_thread.h"
  23 #include "test_macros.h"
  24
  25 std::condition_variable* cv;
  26 std::mutex m;
  27 typedef std::unique_lock<std::mutex> Lock;
  28
  29 bool f_ready = false;
  30 bool g_ready = false;
  31
  32 void f()
  33 {
  34     Lock lk(m);
  35     f_ready = true;
  36     cv->notify_one();
  37     delete cv;
  38 }
  39
  40 void g()
  41 {
  42     Lock lk(m);
  43     g_ready = true;
  44     cv->notify_one();
  45     while (!f_ready)
  46         cv->wait(lk);
  47 }
  48
  49 int main(int, char**)
  50 {
  51     cv = new std::condition_variable;
  52     std::thread th2 = support::make_test_thread(g);
  53     Lock lk(m);
  54     while (!g_ready)
  55         cv->wait(lk);
  56     lk.unlock();
  57     std::thread th1 = support::make_test_thread(f);
  58     th1.join();
  59     th2.join();
  60
  61   return 0;
  62 }