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Top 6 C++ allocator Projects
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https://github.com/microsoft/snmalloc#snmalloc mentions two biggest motivations as:
> Allocations on one thread are freed by a different thread
I can imagine one use-case for this: a task that is scheduled from and executed by a work-stealing thread-pool can allocate memory in one thread but by design there's no guarantee that the memory will be necessarily freed from that exact thread. Would that be a good use-case for snmalloc?
> Deallocations occur in large batches
This sounds much like a bump allocator use-case but which can do this exact thing by calling a single munmap(addr, len) and unmap multiple allocations all at once.
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memory
STL compatible C++ memory allocator library using a new RawAllocator concept that is similar to an Allocator but easier to use and write.
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o1heap
Constant-complexity deterministic memory allocator (heap) for hard real-time high-integrity embedded systems. There is very little activity because the project is finished and does not require further changes.
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metamalloc
Malloc as a library. Single header for Linux & Windows. Repo also provides a live per-thread HTTP memory profiler as a separate single-header with no dependencies
Project mention: Metamalloc: Single-header template based general purpose memory allocator lib | news.ycombinator.com | 2024-01-16 -
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ allocator discussion
C++ allocator related posts
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Metamalloc: Single-header template based general purpose memory allocator lib
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Snmalloc: A Message Passing Allocator
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I'm wanting to write my first compiler, but getting a little bit mixed up in general.
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Compacting the Uncompactable: The Mesh Compacting Memory Allocator
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[Study Project] A memory-optimized JSON data structure
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QAlloc: A fas, type-aware, dynamic sized pool allocator for c++ and c
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QAlloc: A fas, type-aware, dynamic sized pool allocator for c++ and c
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Index
What are some of the best open-source allocator projects in C++? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | Mesh | 1,742 |
| 2 | snmalloc | 1,560 |
| 3 | memory | 1,490 |
| 4 | o1heap | 246 |
| 5 | metamalloc | 104 |
| 6 | lfjson | 0 |
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