[PATCH] D63435: [scudo][standalone] Fuchsia related changes

[Kostya Kortchinsky via Phabricator via llvm-commits]

cryptoad created this revision.
cryptoad added reviewers: morehouse, mcgrathr, eugenis, vitalybuka, hctim.
Herald added subscribers: Sanitizers, jfb, delcypher.
Herald added projects: LLVM, Sanitizers.

Fuchsia wants to use mutexes with PI in the Scudo code, as opposed to
our own implementation. This required making `lock` & `unlock` platform
specific (as opposed to `wait` & `wake`) [code courtesy of John
Grossman].
There is an additional flag required now for mappings as well:
`ZX_VM_ALLOW_FAULTS`.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D63435

Files:
  lib/scudo/standalone/fuchsia.cc
  lib/scudo/standalone/linux.cc
  lib/scudo/standalone/mutex.h

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