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C++ Allocator Projects
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JetBrains
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libCat
🐈⬛ A runtime for C++26 w/out libC or POSIX. Smaller binaries, only arena allocators, SIMD, stronger type safety than STL, and value-based errors!
I recently implemented a runtime for `__builtin_cpu_init()`, `__builtin_cpu_supports()`, and `__builtin_cpu_is()` for x86-64. Using these compiler intrinsics, or a higher level feature such as `[[gnu::cpu_dispatch]]`, you can write functions that behave differently on different CPUs. Fortunately the implementation isn't terribly complex. On x86, it's based around a neat `cpuid` instruction, and other ISAs have similar features.
https://github.com/Cons-Cat/libCat/blob/main/src%2Flibraries...
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++ Allocators discussion
C++ Allocators related posts
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What language best suits for fintech products and services?
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Bloomberg London
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pmr allocators in Xcode / AppleClang
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A note from our sponsor - JetBrains
surveys.jetbrains.com | 1 Sep 2025
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