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Kostya Kortchinsky a0e86420ae [scudo][standalone] Do not fill 32b regions at once 
Summary:
For the 32b primary, whenever we created a region, we would fill it
all at once (eg: create all the transfer batches for all the blocks
in that region). This wasn't ideal as all the potential blocks in
a newly created region might not be consummed right away, and it was
using extra memory (and release cycles) to keep all those free
blocks.

So now we keep track of the current region for a given class, and
how filled it is, carving out at most `MaxNumBatches` worth of
blocks at a time.

Additionally, lower `MaxNumBatches` on Android from 8 to 4. This
lowers the randomness of blocks, which isn't ideal for security, but
keeps things more clumped up for PSS/RSS accounting purposes.

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D75551
 		2020-03-04 14:22:24 -08:00
..
standalone [scudo][standalone] Do not fill 32b regions at once 2020-03-04 14:22:24 -08:00
CMakeLists.txt [GWP-ASan] Crash Handler API. 2020-02-05 15:39:17 -08:00
scudo_allocator.cpp [GWP-ASan] Crash Handler API. 2020-02-05 15:39:17 -08:00
scudo_allocator.h [scudo][NFC] Remove unneeded template from scudo::CombinedAllocator 2019-05-01 19:36:26 +00:00
scudo_allocator_combined.h [scudo][NFC] Remove unneeded template from scudo::CombinedAllocator 2019-05-01 19:36:26 +00:00
scudo_allocator_secondary.h Update compiler-rt cpplint.py 2019-09-11 21:33:06 +00:00
scudo_crc32.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_crc32.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_errors.cpp Remove NOLINTs from compiler-rt 2019-09-11 23:19:48 +00:00
scudo_errors.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_flags.cpp Improve error message when '=' is missing in {ASAN,...}_OPTIONS. 2019-06-15 01:37:14 +00:00
scudo_flags.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_flags.inc [scudo] Tuning changes based on feedback from current use 2019-01-24 15:56:54 +00:00
scudo_interface_internal.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_malloc.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_new_delete.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_platform.h [scudo] Tuning changes based on feedback from current use 2019-01-24 15:56:54 +00:00
scudo_termination.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_tsd.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_tsd_exclusive.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_tsd_exclusive.inc Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_tsd_shared.cpp [scudo] Correct a behavior on the shared TSD registry 2019-06-25 19:58:11 +00:00
scudo_tsd_shared.inc Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_utils.cpp Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00
scudo_utils.h Update the file headers across all of the LLVM projects in the monorepo 2019-01-19 08:50:56 +00:00