libcxx/test/std/thread/thread.semaphore/binary.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: libcpp-has-no-threads
  10 // UNSUPPORTED: c++03, c++11
  11
  12 // This test requires the dylib support introduced in D68480,
  13 // which hasn't shipped yet.
  14 // XFAIL: with_system_cxx_lib=macosx
  15 // XFAIL: with_system_cxx_lib=macosx10.15
  16 // XFAIL: with_system_cxx_lib=macosx10.14
  17 // XFAIL: with_system_cxx_lib=macosx10.13
  18 // XFAIL: with_system_cxx_lib=macosx10.12
  19 // XFAIL: with_system_cxx_lib=macosx10.11
  20 // XFAIL: with_system_cxx_lib=macosx10.10
  21 // XFAIL: with_system_cxx_lib=macosx10.9
  22
  23 // <semaphore>
  24
  25 #include <semaphore>
  26 #include <chrono>
  27 #include <thread>
  28
  29 #include "make_test_thread.h"
  30 #include "test_macros.h"
  31
  32 int main(int, char**)
  33 {
  34   std::binary_semaphore s(1);
  35
  36   auto l = [&](){
  37     for(int i = 0; i < 1024; ++i) {
  38         s.acquire();
  39         std::this_thread::sleep_for(std::chrono::microseconds(1));
  40         s.release();
  41     }
  42   };
  43
  44   std::thread t = support::make_test_thread(l);
  45   l();
  46
  47   t.join();
  48
  49   return 0;
  50 }