std::pmr::monotonic_buffer_resource::release

 

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动态内存管理

未初始化内存算法 uninitialized_copy uninitialized_fill uninitialized_move (C++17) uninitialized_default_construct (C++17) uninitialized_value_construct (C++17) destroy (C++17) destroy_at (C++17) voidify (C++20) uninitialized_copy_n (C++11) uninitialized_fill_n uninitialized_move_n (C++17) uninitialized_default_construct_n (C++17) uninitialized_value_construct_n (C++17) destroy_n (C++17) construct_at (C++20) 受限未初始化内存算法 ranges::uninitialized_copy (C++20) ranges::uninitialized_fill (C++20) ranges::uninitialized_move (C++20) ranges::construct_at (C++20) ranges::destroy (C++20) ranges::destroy_n (C++20) ranges::destroy_at (C++20) ranges::uninitialized_copy_n (C++20) ranges::uninitialized_fill_n (C++20) ranges::uninitialized_move_n (C++20) ranges::uninitialized_default_construct (C++20) ranges::uninitialized_value_construct (C++20) ranges::uninitialized_default_construct_n (C++20)   ranges::uninitialized_value_construct_n (C++20) 分配器 allocator allocator_traits (C++11) allocation_result (C++23) allocator_arg (C++11) uses_allocator (C++11) uses_allocator_construction_args (C++20) make_obj_using_allocator (C++20) uninitialized_construct_using_allocator (C++20) scoped_allocator_adaptor (C++11) pmr::polymorphic_allocator (C++17) 内存资源 pmr::memory_resource (C++17) pmr::get_default_resource (C++17) pmr::set_default_resource (C++17) pmr::new_delete_resource (C++17) pmr::null_memory_resource (C++17) pmr::synchronized_pool_resource (C++17) pmr::unsynchronized_pool_resource (C++17)   pmr::monotonic_buffer_resource (C++17) pmr::pool_options (C++17) 垃圾回收支持 declare_reachable (C++11)(直到 C++23) undeclare_reachable (C++11)(直到 C++23) declare_no_pointers (C++11)(直到 C++23) undeclare_no_pointers (C++11)(直到 C++23) pointer_safety (C++11)(直到 C++23) get_pointer_safety (C++11)(直到 C++23) 未初始化存储 raw_storage_iterator (直到 C++20*) get_temporary_buffer (直到 C++20*) return_temporary_buffer (直到 C++20*) 显式生命周期管理 start_lifetime_asstart_lifetime_as_array (C++23)(C++23)

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std::pmr::monotonic_buffer_resource

monotonic_buffer_resource::monotonic_buffer_resource

monotonic_buffer_resource::~monotonic_buffer_resource

公共成员函数

monotonic_buffer_resource::release

monotonic_buffer_resource::upstream_resource

受保护成员函数

monotonic_buffer_resource::do_allocate

monotonic_buffer_resource::do_deallocate

monotonic_buffer_resource::do_is_equal

 

void release();		(自 C++17 起)

通过在需要时对上游内存资源调用 deallocate 函数来释放所有已分配的内存。将当前缓冲区和下一个缓冲区大小重置为构造时的初始值。

即使尚未为某些分配的块调用 deallocate，内存也会释放回上游资源。

缺陷报告

以下行为更改缺陷报告已追溯应用于先前发布的 C++ 标准。

DR	应用于	已发布的行为	正确行为
LWG 3120	C++17	release 可能会使初始缓冲区不可重用，如果提供了	需要这样做

另请参阅

deallocate

释放内存 (std::pmr::memory_resource 的公共成员函数)