libstdc++-v3/testsuite/20_util/unsynchronized_pool_resource/cons.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
  20 #include <memory_resource>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23
  24 void
  25 test01()
  26 {
  27   __gnu_test::memory_resource test_mr1, test_mr2;
  28   __gnu_test::default_resource_mgr mgr(&test_mr1);
  29
  30   const std::pmr::pool_options opts{1, 2};
  31   using std::pmr::unsynchronized_pool_resource;
  32
  33   unsynchronized_pool_resource p1 = {opts, &test_mr2};
  34   VERIFY( p1.upstream_resource() == &test_mr2 );
  35   unsynchronized_pool_resource p2;
  36   VERIFY( p2.upstream_resource() == std::pmr::get_default_resource() );
  37   unsynchronized_pool_resource p3{&test_mr2};
  38   VERIFY( p3.upstream_resource() == &test_mr2 );
  39   unsynchronized_pool_resource p4{opts};
  40   VERIFY( p4.upstream_resource() == std::pmr::get_default_resource() );
  41
  42   static_assert(!std::is_copy_constructible_v<unsynchronized_pool_resource>);
  43   static_assert(!std::is_copy_assignable_v<unsynchronized_pool_resource>);
  44   static_assert(std::is_destructible_v<unsynchronized_pool_resource>);
  45 }
  46
  47 void
  48 test02()
  49 {
  50   __gnu_test::memory_resource test_mr1, test_mr2;
  51   __gnu_test::default_resource_mgr mgr(&test_mr1);
  52
  53   const std::pmr::pool_options opts{1, 2};
  54
  55   struct derived : std::pmr::unsynchronized_pool_resource
  56   {
  57     using unsynchronized_pool_resource::unsynchronized_pool_resource;
  58   };
  59
  60   derived p1 = {opts, &test_mr2};
  61   VERIFY( p1.upstream_resource() == &test_mr2 );
  62   derived p2;
  63   VERIFY( p2.upstream_resource() == std::pmr::get_default_resource() );
  64   derived p3{&test_mr2};
  65   VERIFY( p3.upstream_resource() == &test_mr2 );
  66   derived p4{opts};
  67   VERIFY( p4.upstream_resource() == std::pmr::get_default_resource() );
  68
  69   static_assert(!std::is_copy_constructible_v<derived>);
  70   static_assert(!std::is_copy_assignable_v<derived>);
  71   static_assert(std::is_destructible_v<derived>);
  72 }
  73
  74 int
  75 main()
  76 {
  77   test01();
  78   test02();
  79 }