Compelling examples of custom C++ allocators? - Stack Overflow
What are some really good reasons to ditch std::allocator in favor of a custom solution? Have you run across any situations where it was absolutely necessary for correctness, performance, …
What's the advantage of using std::allocator instead of new in C++?
Jul 11, 2015 · I've just read about std::allocator. In my opinion, it is more complicated to use it instead of using new and delete. With allocator we must explicitly allocate heap memory, …
How are allocator in C++ implemented? - Stack Overflow
Sep 10, 2018 · The default allocator is std::allocator, and just uses ::operator new as and when required, so nothing special. It's more or less the same as doing new and delete yourself for …
polymorphic_allocator: when and why should I use it?
Jun 24, 2016 · A polymorphic allocator solution on the other hand dictates that a polymorphic allocator must be used. This precludes using std:: containers which use the default allocator, …
c++ - What are the differences between Block, Stack and Scratch ...
Dec 29, 2022 · A block allocator is presumably similar to a pool allocator, where the allocator returns chunks of specific (fixed) sizes (that are usually pre-allocated) - so good when you …
c++11 - How to use allocators in modern C++ - Stack Overflow
Dec 21, 2016 · The question is, how is one supposed to use allocators in new code? What is the "right" way now? From what I deduce in the documentation, construct is part of the allocator …
c++ - Custom allocator and memory alignment - Stack Overflow
May 7, 2020 · The basic memory allocator wouldn't change the scattered nature of a vector of pointers to objects. You can allocate those A s from a pool, but that's none of vector 's …
What's the purpose of std::pmr::polymorphic_allocator?
Oct 19, 2024 · The Allocator interface is much older and automatically supported by standard containers and third party containers. It also is automatically supported by allocator_traits and …
c++ - What is allocator<T> - Stack Overflow
Apr 18, 2012 · std::allocator is a template taking one type parameter, which is the type of objects to be allocated. Instantiations of std::allocator use operator new() and operator delete() …
c++ - Stack-buffer based STL allocator? - Stack Overflow
Nov 8, 2011 · I was wondering if it practicable to have an C++ standard library compliant allocator that uses a (fixed sized) buffer that lives on the stack. Somehow, it seems this question has …