libstdc++-v3/testsuite/20_util/synchronized_pool_resource/options.cc

   1 // Copyright (C) 2018-2023 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-do run { target c++17 } }
  19 // { dg-additional-options "-pthread" { target pthread } }
  20 // { dg-require-gthreads "" }
  21
  22 #include <memory_resource>
  23 #include <testsuite_hooks.h>
  24
  25 bool eq(const std::pmr::pool_options& lhs, const std::pmr::pool_options& rhs)
  26 {
  27   return lhs.max_blocks_per_chunk == rhs.max_blocks_per_chunk
  28     && lhs.largest_required_pool_block == rhs.largest_required_pool_block;
  29 }
  30
  31 void
  32 test01()
  33 {
  34   std::pmr::synchronized_pool_resource r0;
  35   const std::pmr::pool_options opts = r0.options();
  36   VERIFY( opts.max_blocks_per_chunk != 0 );
  37   VERIFY( opts.largest_required_pool_block != 0 );
  38
  39   std::pmr::synchronized_pool_resource r1(opts);
  40   const auto opts1 = r1.options();
  41   VERIFY( eq(opts, opts1) );
  42
  43   std::pmr::synchronized_pool_resource r2(std::pmr::pool_options{0, 0});
  44   const auto opts2 = r2.options();
  45   VERIFY( eq(opts, opts2) );
  46 }
  47
  48 int
  49 main()
  50 {
  51   test01();
  52 }