[PATCH] D43693: [Sanitizers] Increase allocated chunk limit for LargeMmapAllocator

[Aleksey Shlyapnikov via Phabricator via llvm-commits]

alekseyshl created this revision.
alekseyshl added a reviewer: eugenis.
Herald added subscribers: Sanitizers, delcypher, kubamracek.

There are applications out there which allocate more than 1 << 18 large chunks
of memory (those handled by LargeMmapAllocator, aka secondary allocator).

For 64 bits, secondary allocator stores allocated chunks in a growing on
demand region of memory, growing in blocks of 128K, up to 1 << 20 chunks total.

Sanitizer internal allocator's secondary uses fixed size array storing up
to 1 << 15 chunks (down to 256K from 2Mb of memory used for that array).

Nothing is changed for 32 bits, chunks are still stored in the fixed size
array (up to 1 << 15 chunks).


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D43693

Files:
  lib/sanitizer_common/sanitizer_allocator_internal.h
  lib/sanitizer_common/sanitizer_allocator_secondary.h

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D43693.135688.patch
Type: text/x-patch
Size: 5226 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180223/cfde4aa0/attachment.bin>