std::experimental::pmr::memory_resource:: do_allocate
From cppreference.net
<
cpp
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experimental
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memory resource
C++
Polymorphic allocator library
Convenience aliases for containers using
polymorphic_allocator
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| Memory resource classes | ||||
| Global memory resources | ||||
| Type-erased allocator support for existing classes | ||||
std::experimental::pmr::memory_resource
| Public member functions | ||||
| Protected member functions | ||||
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memory_resource::do_allocate
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| Non-member functions | ||||
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virtual
void
*
do_allocate
(
std::
size_t
bytes,
std::
size_t
alignment
)
=
0
;
|
(库基础技术规范) | |
分配至少 bytes 字节的存储空间。返回的存储空间将按指定的 alignment 进行对齐（若支持该对齐方式），否则按 alignof ( std:: max_align_t ) 对齐。
alignment 应为 2 的幂。
异常
如果无法获取请求大小和对齐方式的存储空间，则抛出异常。
参见
|
分配内存
(公开成员函数) |