[PATCH] D61088: [scudo][standalone] Introduce the SizeClassMap

[Kostya Kortchinsky via Phabricator via llvm-commits]

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

As with the sanitizer_common allocator, the SCM allows for efficient
mapping between sizes and size-classes, table-free.

It doesn't depart significantly from the original, except that we
allow the use of size-class 0 for other purposes (as opposed to
chunks of size 0). The Primary will use it to hold TransferBatches.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D61088

Files:
  lib/scudo/standalone/CMakeLists.txt
  lib/scudo/standalone/common.h
  lib/scudo/standalone/size_class_map.h
  lib/scudo/standalone/tests/CMakeLists.txt
  lib/scudo/standalone/tests/size_class_map_test.cc

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