tree c223364882db8b80ddc6724556c138257b353c33
parent e791cfa363740f47e3c30952bb5f78997b7c07ec
author Kostya Kortchinsky <kostyak@google.com> 1556115649 +0000
committer Kostya Kortchinsky <kostyak@google.com> 1556115649 +0000

[scudo][standalone] Introduce the Secondary allocator

Summary:
The Secondary allocator wraps the platform allocation primitives. It is
meant to be used for larger sizes that the Primary can't fullfill, as
it will be slower, and sizes are multiple of the system page size.

This also changes some of the existing code, notably the opaque
platform data being passed to the platform specific functions: we can
shave a couple of syscalls on Fuchsia by storing additional data (this
addresses a TODO).

Reviewers: eugenis, vitalybuka, hctim, morehouse

Reviewed By: morehouse

Subscribers: mgorny, delcypher, jfb, #sanitizers, llvm-commits

Tags: #llvm, #sanitizers

Differential Revision: https://reviews.llvm.org/D60787

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@359097 91177308-0d34-0410-b5e6-96231b3b80d8