std::get_new_handler

 

C++

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低层内存管理 operator newoperator new[] operator deleteoperator delete[] nothrow_t nothrow new_handler set_new_handler get_new_handler (C++11) bad_alloc bad_array_new_length (C++11) align_val_t (C++17) destroying_delete_t (C++20) launder (C++17) 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) owner_less<void> (C++17) owner_hash (C++26) owner_equal (C++26) enable_shared_from_this (C++11) bad_weak_ptr (C++11) default_delete (C++11) out_ptr_t (C++23) inout_ptr_t (C++23) 杂项 pointer_traits (C++11) to_address (C++20) addressof (C++11) align (C++11) assume_aligned (C++20) is_sufficiently_aligned (C++26) C 库 malloc calloc realloc free aligned_alloc (C++17)

 

低层内存管理

函数

operator newoperator new[]

operator deleteoperator delete[]

get_new_handler (C++11)

set_new_handler

类

bad_alloc

bad_array_new_length (C++11)

align_val_t (C++17)

类型

new_handler

对象

nothrow

destroying_delete (C++20)

对象访问

launder (C++17)

 

在标头 <new> 定义
std::new_handler get_new_handler() noexcept;		(C++11 起)

返回当前安装的 new 处理函数，它可以是空指针值。

此函数是线程安全的。先前对 std::set_new_handler 的调用同步于（见 std::memory_order）对 std::get_new_handler 的后继调用。

参数

（无）

返回值

当前安装的new 处理函数，它可以是空指针值。

参阅

operator newoperator new[]	分配函数 (函数)
set_new_handler	注册一个 new 处理函数 (函数)
new_handler	new 处理函数的函数指针类型 (typedef)