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

 

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std::pmr::polymorphic_allocator

成员函数

polymorphic_allocator::polymorphic_allocator

polymorphic_allocator::allocate

polymorphic_allocator::deallocate

polymorphic_allocator::construct

polymorphic_allocator::destroy (C++20/26*)

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!= (直到 C++20)

 

template< class U > void deallocate_object( U* p, std::size_t n = 1 );		(since C++20)

解分配 p 指向的存储，该存储必须已从与 *resource() 相等的 std::pmr::memory_resource x 分配，使用 x.allocate(n * sizeof(U), alignof(U))，通常通过调用 allocate_object<U>(n)。

等效于 deallocate_bytes(p, n * sizeof(U), alignof(U));。

参数

p	-	要解分配的内存指针
n	-	内存用于的 U 类型对象数量

异常

不抛出任何异常。

注意

此函数是为了与完全特化的分配器 std::pmr::polymorphic_allocator<> 一起使用而引入的，但它在任何特化中都可能有用。

参见

deallocate_bytes (C++20)	释放从 allocate_bytes 获取的原始内存 (公共成员函数)
delete_object (C++20)	销毁并解分配对象 (公共成员函数)
deallocate [静态]	使用分配器解分配存储 (std::allocator_traits<Alloc> 的公共静态成员函数)
deallocate	解分配内存 (std::pmr::memory_resource 的公共成员函数)