Custom Memory Allocation in C++

[Obito]

Is it possible to implement a custom memory allocator in C++ that performs better than the default allocator provided by the standard library, in terms of both speed and memory efficiency, and if so, how might this be done?

 

[Roddet]

I dont think someone from the OT Community could outsmart the standard memory alloc efficiency

 

[danilopucci]

Q: Is it possible to implement a custom memory allocator in C++?
A: Yes

Q: That performs better than the default allocator provided by the standard library, in terms of both speed and memory efficiency?
A: Maybe, depends on its application

This kind of thing is very usual on Embedded Systems, specially where a RTOS is running on. The approach is to previouslly allocate the memory and later manage it, depending on pre-configured specifications. You can read more about it on FreeRTOS website.

 

[Iryont]

Is it possible to implement a custom memory allocator in C++ that performs better than the default allocator provided by the standard library, in terms of both speed and memory efficiency, and if so, how might this be done?

Yes, there are countless of third party allocators which perform way better than default one, for example:

GitHub - google/tcmalloc

Contribute to google/tcmalloc development by creating an account on GitHub.

github.com

GitHub - microsoft/mimalloc: mimalloc is a compact general purpose allocator with excellent performance.

mimalloc is a compact general purpose allocator with excellent performance. - GitHub - microsoft/mimalloc: mimalloc is a compact general purpose allocator with excellent performance.

github.com

GitHub - jemalloc/jemalloc

Contribute to jemalloc/jemalloc development by creating an account on GitHub.

github.com

GitHub - SergeyMakeev/smmalloc: Blazing fast memory allocator designed for video games

Blazing fast memory allocator designed for video games - GitHub - SergeyMakeev/smmalloc: Blazing fast memory allocator designed for video games

github.com

GitHub - emeryberger/Hoard: The Hoard Memory Allocator: A Fast, Scalable, and Memory-efficient Malloc for Linux, Windows, and Mac.

The Hoard Memory Allocator: A Fast, Scalable, and Memory-efficient Malloc for Linux, Windows, and Mac. - GitHub - emeryberger/Hoard: The Hoard Memory Allocator: A Fast, Scalable, and Memory-efficie...

github.com

GitHub - mjansson/rpmalloc: Public domain cross platform lock free thread caching 16-byte aligned memory allocator implemented in C

Public domain cross platform lock free thread caching 16-byte aligned memory allocator implemented in C - GitHub - mjansson/rpmalloc: Public domain cross platform lock free thread caching 16-byte a...

github.com