std::pmr::polymorphic_allocator<T>::deallocate_object

 

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动态内存管理

智能指针 unique_ptr (C++11) shared_ptr (C++11) weak_ptr (C++11) auto_ptr (C++17 前) owner_less (C++11) enable_shared_from_this (C++11) bad_weak_ptr (C++11) default_delete (C++11) 分配器 allocator allocator_traits (C++11) allocator_arg_t (C++11) 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)

未初始化存储 uninitialized_copy uninitialized_fill uninitialized_move (C++17) uninitialized_default_construct (C++17) uninitialized_value_construct (C++17) destroy (C++17) 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) destroy_at (C++17) raw_storage_iterator (C++20 前) get_temporary_buffer (C++20 前) return_temporary_buffer (C++20 前) 垃圾收集支持 declare_reachable (C++11) undeclare_reachable (C++11) declare_no_pointers (C++11) undeclare_no_pointers (C++11) pointer_safety (C++11) get_pointer_safety (C++11) 杂项 pointer_traits (C++11) to_address (C++20) addressof (C++11) align (C++11) assume_aligned (C++20) C 库 malloc aligned_alloc (C++17) calloc realloc free 低层内存管理

 

std::pmr::polymorphic_allocator

成员函数

polymorphic_allocator::polymorphic_allocator

polymorphic_allocator::allocate

polymorphic_allocator::deallocate

polymorphic_allocator::construct

polymorphic_allocator::destroy

polymorphic_allocator::allocate_bytes (C++20)

polymorphic_allocator::deallocate_bytes (C++20)

polymorphic_allocator::allocate_object (C++20)

polymorphic_allocator::deallocate_object (C++20)

polymorphic_allocator::new_object (C++20)

polymorphic_allocator::delete_object (C++20)

polymorphic_allocator::select_on_container_copy_construction

polymorphic_allocator::resource

非成员函数

operator==operator!=

 

template <class u> void delete_object( U* p );		(C++20 起)

销毁 U 类型对象并解分配为它分配的存储。

等价于

destroy(p);
deallocate_object(p);

参数

p

-

指向要销毁并解分配的对象的指针

异常

不抛出。

注意

引入此函数是为了用于全特化分配器 std::polymorphic_allocator<> ，但它可能在任何特化中都有用。

参阅

deallocate_bytes (C++20)	释放从 allocate_bytes 获得的未处理内存 (公开成员函数)
deallocate_object (C++20)	释放由 allocate_object 获得的未处理内存 (公开成员函数)
deallocate [静态]	用分配器解分配存储 (std::allocator_traits<Alloc> 的公开静态成员函数)
deallocate	解分配内存 (std::pmr::memory_resource 的公开成员函数)