libcxx/test/std/thread/thread.condition/notify_all_at_thread_exit.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 // notify_all_at_thread_exit(...) requires move semantics to transfer the unique_lock.
  12 // UNSUPPORTED: c++03
  13
  14 // <condition_variable>
  15 //
  16 // void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
  17
  18 #include <condition_variable>
  19 #include <mutex>
  20 #include <thread>
  21 #include <chrono>
  22 #include <cassert>
  23
  24 #include "make_test_thread.h"
  25 #include "test_macros.h"
  26
  27 std::condition_variable cv;
  28 std::mutex mut;
  29
  30 typedef std::chrono::milliseconds ms;
  31 typedef std::chrono::high_resolution_clock Clock;
  32
  33 void func()
  34 {
  35     std::unique_lock<std::mutex> lk(mut);
  36     std::notify_all_at_thread_exit(cv, std::move(lk));
  37     std::this_thread::sleep_for(ms(300));
  38 }
  39
  40 int main(int, char**)
  41 {
  42     std::unique_lock<std::mutex> lk(mut);
  43     std::thread t = support::make_test_thread(func);
  44     Clock::time_point t0 = Clock::now();
  45     cv.wait(lk);
  46     Clock::time_point t1 = Clock::now();
  47     assert(t1-t0 > ms(250));
  48     t.join();
  49
  50   return 0;
  51 }