std::pmr::synchronized_pool_resource::do_allocate
From cppreference.com
< cpp | memory | synchronized pool resource
C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Memory management library
(exposition only*)
(C++11)
(C++23)
(C++11)
(C++17)
(C++11)
(C++11)
(C++20)
(C++20)
(C++17)
(C++11)
(C++17)
(C++20)
(C++17)
(C++17)
(C++17)
(C++17)
(C++17)
(C++17)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++17)
(C++17)
(C++17)
(C++17)
(C++17)
(C++17)
(C++17)
(C++17)
Uninitialized storage (until C++20)
(until C++20*)
(until C++20*)
(until C++20*)
Garbage collector support (until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)
(C++11)
(C++17)
(C++20)
(C++17)
(C++11)
(C++11)
(C++11)
(until C++17*)
(C++11)
(C++17)
(C++26)
(C++26)
(C++11)
(C++11)
(C++11)
(C++23)
(C++23)
(C++11)
(C++20)
(C++11)
(C++11)
(C++20)
(C++26)
std::pmr::synchronized_pool_resource
Public member functions
Protected member functions
synchronized_pool_resource::do_allocate
virtual void* do_allocate( std::size_t bytes, std::size_t alignment );
(since C++17)
Allocates storage.
If the pool selected for a block of size bytes is unable to satisfy the request from its internal data structures, calls allocate() on the upstream memory resource to obtain memory.
If the size requested is larger than what the largest pool can handle, memory is allocated by calling allocate() on the upstream memory resource.
[edit] Return value
A pointer to allocated storage of at least bytes bytes in size, aligned to the specified alignment if such alignment is supported, and to alignof(std::max_align_t ) otherwise.
[edit] Exceptions
Throws nothing unless calling allocate() on the upstream memory resource throws.