libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.destr/dtor.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
  12 // <thread>
  13
  14 // class thread
  15
  16 // ~thread();
  17
  18 #include <cassert>
  19 #include <cstdlib>
  20 #include <exception>
  21 #include <new>
  22 #include <thread>
  23
  24 #include "make_test_thread.h"
  25 #include "test_macros.h"
  26
  27 class G
  28 {
  29     int alive_;
  30 public:
  31     static int n_alive;
  32     static bool op_run;
  33
  34     G() : alive_(1) {++n_alive;}
  35     G(const G& g) : alive_(g.alive_) {++n_alive;}
  36     ~G() {alive_ = 0; --n_alive;}
  37
  38     void operator()()
  39     {
  40         assert(alive_ == 1);
  41         assert(n_alive >= 1);
  42         op_run = true;
  43     }
  44 };
  45
  46 int G::n_alive = 0;
  47 bool G::op_run = false;
  48
  49 void f1()
  50 {
  51     std::_Exit(0);
  52 }
  53
  54 int main(int, char**)
  55 {
  56     std::set_terminate(f1);
  57     {
  58         assert(G::n_alive == 0);
  59         assert(!G::op_run);
  60         G g;
  61         {
  62           std::thread t = support::make_test_thread(g);
  63           std::this_thread::sleep_for(std::chrono::milliseconds(250));
  64         }
  65     }
  66     assert(false);
  67
  68   return 0;
  69 }