libstdc++-v3/testsuite/20_util/unsynchronized_pool_resource/cons.cc

   1 // Copyright (C) 2018-2019 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-options "-std=gnu++17" }
  19 // { dg-do run { target c++17 } }
  20
  21 #include <memory_resource>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_allocator.h>
  24
  25 void
  26 test01()
  27 {
  28   __gnu_test::memory_resource test_mr1, test_mr2;
  29   __gnu_test::default_resource_mgr mgr(&test_mr1);
  30
  31   const std::pmr::pool_options opts{1, 2};
  32   using std::pmr::unsynchronized_pool_resource;
  33
  34   unsynchronized_pool_resource p1 = {opts, &test_mr2};
  35   VERIFY( p1.upstream_resource() == &test_mr2 );
  36   unsynchronized_pool_resource p2;
  37   VERIFY( p2.upstream_resource() == std::pmr::get_default_resource() );
  38   unsynchronized_pool_resource p3{&test_mr2};
  39   VERIFY( p3.upstream_resource() == &test_mr2 );
  40   unsynchronized_pool_resource p4{opts};
  41   VERIFY( p4.upstream_resource() == std::pmr::get_default_resource() );
  42
  43   static_assert(!std::is_copy_constructible_v<unsynchronized_pool_resource>);
  44   static_assert(!std::is_copy_assignable_v<unsynchronized_pool_resource>);
  45   static_assert(std::is_destructible_v<unsynchronized_pool_resource>);
  46 }
  47
  48 void
  49 test02()
  50 {
  51   __gnu_test::memory_resource test_mr1, test_mr2;
  52   __gnu_test::default_resource_mgr mgr(&test_mr1);
  53
  54   const std::pmr::pool_options opts{1, 2};
  55
  56   struct derived : std::pmr::unsynchronized_pool_resource
  57   {
  58     using unsynchronized_pool_resource::unsynchronized_pool_resource;
  59   };
  60
  61   derived p1 = {opts, &test_mr2};
  62   VERIFY( p1.upstream_resource() == &test_mr2 );
  63   derived p2;
  64   VERIFY( p2.upstream_resource() == std::pmr::get_default_resource() );
  65   derived p3{&test_mr2};
  66   VERIFY( p3.upstream_resource() == &test_mr2 );
  67   derived p4{opts};
  68   VERIFY( p4.upstream_resource() == std::pmr::get_default_resource() );
  69
  70   static_assert(!std::is_copy_constructible_v<derived>);
  71   static_assert(!std::is_copy_assignable_v<derived>);
  72   static_assert(std::is_destructible_v<derived>);
  73 }
  74
  75 int
  76 main()
  77 {
  78   test01();
  79   test02();
  80 }