libcxx/test/std/thread/thread.latch/try_wait.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 // UNSUPPORTED: c++03, c++11, c++14, c++17
  11
  12 // XFAIL: availability-synchronization_library-missing
  13
  14 // <latch>
  15
  16 #include <latch>
  17 #include <cassert>
  18
  19 #include "test_macros.h"
  20
  21 int main(int, char**)
  22 {
  23   std::latch l(1);
  24
  25   l.count_down();
  26   bool const b = l.try_wait();
  27   assert(b);
  28
  29   return 0;
  30 }