Please consider adding scudo

[joshtriplett]

Please consider adding scudo

[daanx]

Thanks for the suggestion @joshtriplett -- and apologies for the late reply (replies!); I was accidently not "watching" this repo but will try to catch up :-) If I get to it I will include it as well!

[AndroidInternal]

scudo is now the default allocator on Android and Fuchsia.

According to this article，scudo's performance is pretty good, but when look inside the scudo source code, the design of scudo is against many rules of high performance allocator.

Please consider adding the scudo allocator.

[jvoisin]

Is there an easy way to have binaries use scudo via LD_PRELOAD?

[mjp41]

@jvoisin I have been testing it locally on my machine following @joshtriplett's instructions. The main issue is the only way I know to build it is to checkout the whole LLVM mono-repo. This is quite a lot of download, so I never made a PR. So if you can work out a way to selectively checkout just the compiler-rt/lib/scudo/standalone, then you can get a libscudo.so that can be LD_PRELOADed and last time I tried passed all the tests.

[jvoisin]

Sparse checkouts to the rescue:

git init llvm-project
cd llvm-project
git remote add -f origin https://github.com/llvm/llvm-project
git config core.sparseCheckout true
echo "main/compiler-rt/lib/scudo/standalone" >> .git/info/sparse-checkout

I might™ do this at some point, but feel free to proceed without me.