[PATCH] D33454: [sanitizer] Change the 32-bit Primary AllocateRegion to reduce fragmentation

[Dmitry Vyukov via Phabricator via llvm-commits]

dvyukov added a comment.

> I am not certain about the Windows impact of this change

I have not looked at the code, but windows has a thing called "allocation granularity" which is larger than page size (historically equal to 64K). OS allocator manages virtual address space only at that granularity. I.e. it is not possible to allocate/free a single page. That can be the reason for the different implementation.


https://reviews.llvm.org/D33454