| // Copyright (C) 2018-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-do run { target c++17 } } |
| |
| #include <memory_resource> |
| #include <testsuite_allocator.h> |
| #include <testsuite_hooks.h> |
| |
| void |
| test01() |
| { |
| __gnu_test::memory_resource test_mr; |
| std::pmr::unsynchronized_pool_resource r(&test_mr); |
| r.release(); |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| r.release(); |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| (void) r.allocate(1); |
| VERIFY( test_mr.number_of_active_allocations() != 0 ); |
| r.release(); |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| r.release(); |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| } |
| |
| void |
| test02() |
| { |
| struct nullable_memory_resource : public std::pmr::memory_resource |
| { |
| void* |
| do_allocate(std::size_t bytes, std::size_t alignment) override |
| { return upstream->allocate(bytes, alignment); } |
| |
| void |
| do_deallocate(void* p, std::size_t bytes, std::size_t alignment) override |
| { upstream->deallocate(p, bytes, alignment); } |
| |
| bool |
| do_is_equal(const memory_resource& r) const noexcept override |
| { return &r == this; } |
| |
| std::pmr::memory_resource* upstream = std::pmr::get_default_resource(); |
| }; |
| |
| nullable_memory_resource test_mr; |
| std::pmr::unsynchronized_pool_resource r(&test_mr); |
| r.release(); |
| test_mr.upstream = nullptr; |
| r.release(); // should not need to call anything through upstream pointer |
| } |
| |
| void |
| test03() |
| { |
| __gnu_test::memory_resource test_mr; |
| { |
| std::pmr::unsynchronized_pool_resource r(&test_mr); |
| // Destructor calls release() |
| } |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| { |
| std::pmr::unsynchronized_pool_resource r(&test_mr); |
| (void) r.allocate(1); |
| VERIFY( test_mr.number_of_active_allocations() != 0 ); |
| // Destructor calls release() |
| } |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| { |
| std::pmr::unsynchronized_pool_resource r({10, 16}, &test_mr); |
| (void) r.allocate(2 * r.options().largest_required_pool_block); |
| VERIFY( test_mr.number_of_active_allocations() != 0 ); |
| // Destructor calls release() |
| } |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| { |
| std::pmr::unsynchronized_pool_resource r({16, 16}, &test_mr); |
| (void) r.allocate(2); |
| (void) r.allocate(8); |
| (void) r.allocate(16); |
| (void) r.allocate(2); |
| (void) r.allocate(8); |
| (void) r.allocate(16); |
| (void) r.allocate(2 * r.options().largest_required_pool_block); |
| VERIFY( test_mr.number_of_active_allocations() != 0 ); |
| // Destructor calls release() |
| } |
| VERIFY( test_mr.number_of_active_allocations() == 0 ); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| } |