libstdc++-v3/testsuite/30_threads/thread/swap/1.cc

   1 // { dg-do run }
   2 // { dg-additional-options "-pthread" { target pthread } }
   3 // { dg-require-effective-target c++11 }
   4 // { dg-require-gthreads "" }
   5
   6 // Copyright (C) 2008-2020 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23
  24 #include <thread>
  25 #include <system_error>
  26 #include <bits/move.h> // std::move
  27 #include <testsuite_hooks.h>
  28
  29 void f() { }
  30
  31 void test01()
  32 {
  33   try
  34     {
  35       std::thread t1(f);
  36       std::thread::id t1_id = t1.get_id();
  37
  38       std::thread t2;
  39
  40       t2.swap(t1);
  41       VERIFY( t1.get_id() == std::thread::id() );
  42       VERIFY( t2.get_id() == t1_id );
  43
  44       t2.join();
  45     }
  46   catch (const std::system_error&)
  47     {
  48       VERIFY( false );
  49     }
  50   catch (...)
  51     {
  52       VERIFY( false );
  53     }
  54 }
  55
  56 void test02()
  57 {
  58   try
  59     {
  60       std::thread t1(f);
  61       std::thread::id t1_id = t1.get_id();
  62
  63       std::thread t2;
  64
  65       std::swap(t1, t2);
  66       VERIFY( t1.get_id() == std::thread::id() );
  67       VERIFY( t2.get_id() == t1_id );
  68
  69       t2.join();
  70     }
  71   catch (const std::system_error&)
  72     {
  73       VERIFY( false );
  74     }
  75   catch (...)
  76     {
  77       VERIFY( false );
  78     }
  79 }
  80
  81 int main()
  82 {
  83   test01();
  84   test02();
  85
  86   return 0;
  87 }