libstdc++-v3/testsuite/30_threads/thread/cons/4.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) 2008-2024 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 <functional> // std::ref, std::cref
  25 #include <thread>
  26 #include <system_error>
  27 #include <testsuite_hooks.h>
  28
  29 struct noncopyable
  30 {
  31   noncopyable() = default;
  32   ~noncopyable() = default;
  33   noncopyable(const noncopyable&) = delete;
  34   noncopyable& operator=(const noncopyable&) = delete;
  35   void operator()(std::thread::id& id) const
  36   {
  37     id = std::this_thread::get_id();
  38   }
  39 };
  40
  41 // same as 3, but function is noncopyable function object
  42 // thread variadic cons not copied when std::ref
  43 // thread variadic cons copied when not std::ref
  44 // thread variadic cons not copied when std::cref
  45 // thread variadic cons copied when not std::cref
  46 // no errors
  47 void test03()
  48 {
  49   try
  50     {
  51       std::thread::id t1_id1;
  52       noncopyable nc1;
  53       std::thread t1(std::ref(nc1), std::ref(t1_id1));
  54       std::thread::id t1_id2 = t1.get_id();
  55       VERIFY( t1.joinable() );
  56       t1.join();
  57       VERIFY( !t1.joinable() );
  58       VERIFY( t1_id1 == t1_id2 );
  59
  60       std::thread::id t2_id1;
  61       noncopyable nc2;
  62       std::thread t2(std::cref(nc2), std::ref(t2_id1));
  63       std::thread::id t2_id2 = t2.get_id();
  64       VERIFY( t2.joinable() );
  65       t2.join();
  66       VERIFY( !t2.joinable() );
  67       VERIFY( t2_id1 == t2_id2 );
  68     }
  69   catch(const std::system_error&)
  70     {
  71       VERIFY( false );
  72     }
  73   catch(...)
  74     {
  75       VERIFY( false );
  76     }
  77 }
  78
  79 int main()
  80 {
  81   test03();
  82   return 0;
  83 }