[PATCH] D15202: [SectionMemoryManager] Make better use of virtual memory

[Keno Fischer via llvm-commits]

loladiro created this revision.
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On Windows, the allocation granularity can be significantly larger than a page (64K), so with many small objects, just clearing the FreeMem list rapidly leaks quite a bit of virtual memory space (if not rss). Fix that by only removing those parts of the FreeMem blocks that overlap pages for which we are applying memory permissions, rather than dropping the FreeMem blocks entirely.

Repository:
  rL LLVM

http://reviews.llvm.org/D15202

Files:
  include/llvm/ExecutionEngine/SectionMemoryManager.h
  include/llvm/Support/Memory.h
  lib/ExecutionEngine/SectionMemoryManager.cpp
  lib/Support/Memory.cpp
  lib/Support/Unix/Memory.inc

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