std::pmr::polymorphic_allocator<T>::deallocate

 

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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::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* 中弃用/恢复)

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!= (C++20 前)

 

void deallocate( T* p, std::size_t n );		(C++17 起)

释放由 p 指向的存储，它必须是通过使用 x.allocate(n * sizeof(T), alignof(T)) 从一个与 *resource() 相等的 std::pmr::memory_resource x 分配的。

等价于 this->resource()->deallocate(p, n * sizeof(T), alignof(T));。

参数

p	-	指向要释放的内存的指针
n	-	最初分配的对象的数量

异常

不抛出任何异常。

参阅

deallocate_bytes (C++20)	释放从 allocate_bytes 获取的原始内存 (公开成员函数)
deallocate_object (C++20)	释放由 allocate_object 获取的原始内存 (公开成员函数)
delete_object (C++20)	销毁并释放一个对象 (公开成员函数)
deallocate [静态]	使用分配器释放存储 (std::allocator_traits<Alloc> 的公开静态成员函数)
deallocate	释放内存 (std::pmr::memory_resource 的公开成员函数)