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

   1 // Copyright (C) 2018-2020 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 }
  19 // { dg-options "-std=gnu++17 -pthread" }
  20 // { dg-require-effective-target c++17 }
  21 // { dg-require-effective-target pthread }
  22 // { dg-require-gthreads "" }
  23
  24 #include <memory_resource>
  25 #include <testsuite_hooks.h>
  26
  27 bool eq(const std::pmr::pool_options& lhs, const std::pmr::pool_options& rhs)
  28 {
  29   return lhs.max_blocks_per_chunk == rhs.max_blocks_per_chunk
  30     && lhs.largest_required_pool_block == rhs.largest_required_pool_block;
  31 }
  32
  33 void
  34 test01()
  35 {
  36   std::pmr::synchronized_pool_resource r0;
  37   const std::pmr::pool_options opts = r0.options();
  38   VERIFY( opts.max_blocks_per_chunk != 0 );
  39   VERIFY( opts.largest_required_pool_block != 0 );
  40
  41   std::pmr::synchronized_pool_resource r1(opts);
  42   const auto opts1 = r1.options();
  43   VERIFY( eq(opts, opts1) );
  44
  45   std::pmr::synchronized_pool_resource r2(std::pmr::pool_options{0, 0});
  46   const auto opts2 = r2.options();
  47   VERIFY( eq(opts, opts2) );
  48 }
  49
  50 int
  51 main()
  52 {
  53   test01();
  54 }