libstdc++-v3/testsuite/30_threads/stop_token/stop_source.cc

   1 // Copyright (C) 2019-2023 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-add-options libatomic }
  19 // { dg-do run { target c++20 } }
  20
  21 #include <stop_token>
  22 #include <testsuite_hooks.h>
  23
  24 void
  25 test01()
  26 {
  27   std::stop_source ssrc;
  28   VERIFY( ssrc.stop_possible() );
  29   VERIFY( !ssrc.stop_requested() );
  30   VERIFY( ssrc == ssrc );
  31   VERIFY( !(ssrc != ssrc) );
  32
  33   std::stop_source copy(ssrc);
  34   VERIFY( copy.stop_possible() );
  35   VERIFY( !copy.stop_requested() );
  36   VERIFY( ssrc.stop_possible() );
  37   VERIFY( !ssrc.stop_requested() );
  38   VERIFY( copy == ssrc );
  39   VERIFY( !(copy != ssrc) );
  40   VERIFY( ssrc == ssrc );
  41   VERIFY( !(ssrc != ssrc) );
  42
  43   std::stop_source move(std::move(ssrc));
  44   VERIFY( move.stop_possible() );
  45   VERIFY( !move.stop_requested() );
  46   VERIFY( copy.stop_possible() );
  47   VERIFY( !copy.stop_requested() );
  48   VERIFY( !ssrc.stop_possible() );
  49   VERIFY( !ssrc.stop_requested() );
  50   VERIFY( !(move == ssrc) );
  51   VERIFY( move != ssrc );
  52   VERIFY( ssrc == ssrc );
  53   VERIFY( !(ssrc != ssrc) );
  54   VERIFY( move == copy );
  55   VERIFY( !(move != copy) );
  56   VERIFY( !(copy == ssrc) );
  57   VERIFY( copy != ssrc );
  58 }
  59
  60 void
  61 test02()
  62 {
  63   // stop_source(nostopstate_t) constructor is explicit:
  64   static_assert(!std::is_convertible_v<std::nostopstate_t, std::stop_source>);
  65
  66   std::stop_source ssrc(std::nostopstate);
  67   VERIFY( !ssrc.stop_possible() );
  68   VERIFY( !ssrc.stop_requested() );
  69   VERIFY( ssrc == ssrc );
  70   VERIFY( !(ssrc != ssrc) );
  71
  72   std::stop_source copy(ssrc);
  73   VERIFY( !copy.stop_possible() );
  74   VERIFY( !copy.stop_requested() );
  75   VERIFY( !ssrc.stop_possible() );
  76   VERIFY( !ssrc.stop_requested() );
  77   VERIFY( copy == ssrc );
  78   VERIFY( !(copy != ssrc) );
  79   VERIFY( ssrc == ssrc );
  80   VERIFY( !(ssrc != ssrc) );
  81
  82   std::stop_source move(std::move(ssrc));
  83   VERIFY( !move.stop_possible() );
  84   VERIFY( !move.stop_requested() );
  85   VERIFY( !copy.stop_possible() );
  86   VERIFY( !copy.stop_requested() );
  87   VERIFY( !ssrc.stop_possible() );
  88   VERIFY( !ssrc.stop_requested() );
  89   VERIFY( move == ssrc );
  90   VERIFY( !(move != ssrc) );
  91   VERIFY( ssrc == ssrc );
  92   VERIFY( !(ssrc != ssrc) );
  93   VERIFY( move == copy );
  94   VERIFY( !(move != copy) );
  95   VERIFY( copy == ssrc );
  96   VERIFY( !(copy != ssrc) );
  97 }
  98
  99 void
 100 test03()
 101 {
 102   std::stop_source s1;
 103   std::stop_source copy(s1);
 104   s1.request_stop();
 105   std::stop_source s2(std::nostopstate);
 106   VERIFY( s1 != s2 );
 107
 108   s1.swap(s2);
 109   VERIFY( !s1.stop_possible() );
 110   VERIFY( !s1.stop_requested() );
 111   VERIFY( s2.stop_possible() );
 112   VERIFY( s2.stop_requested() );
 113   VERIFY( s1 != s2 );
 114   VERIFY( s2 == copy );
 115
 116   swap(s1, s2);
 117   VERIFY( s1.stop_possible() );
 118   VERIFY( s1.stop_requested() );
 119   VERIFY( !s2.stop_possible() );
 120   VERIFY( !s2.stop_requested() );
 121   VERIFY( s1 == copy );
 122 }
 123
 124 int main()
 125 {
 126   test01();
 127   test02();
 128   test03();
 129 }