libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/invoke.cc

   1 // Copyright (C) 2020-2024 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 int lval[5];
  25 int rval[5];
  26
  27 void
  28 test01()
  29 {
  30   std::stop_source ssrc;
  31   std::stop_token stok = ssrc.get_token();
  32   struct F
  33   {
  34     void operator()() const & { ++lval[i]; }
  35     void operator()() && { ++rval[i]; }
  36
  37     int i;
  38   };
  39   std::stop_callback<F> cb0(stok, F{0});
  40   std::stop_callback<F> cb1(stok, F{1});
  41   std::stop_callback<F> cb2(stok, F{2});
  42   F f3{3};
  43   std::stop_callback<F&> cb3(stok, f3);
  44   std::stop_callback<const F> cb4(stok, F{4});
  45
  46   // PR libstdc++/92895
  47   // Callback should be invoked with correct value category.
  48   ssrc.request_stop();
  49
  50   VERIFY( lval[0] == 0 && lval[1] == 0 && lval[2] == 0 );
  51   VERIFY( lval[3] == 1 );
  52   VERIFY( lval[4] == 1 );
  53   VERIFY( rval[0] == 1 );
  54   VERIFY( rval[1] == 1 );
  55   VERIFY( rval[2] == 1 );
  56   VERIFY( rval[3] == 0 && rval[4] == 0 );
  57 }
  58
  59 int main()
  60 {
  61   test01();
  62 }