[PATCH] D48445: [sanitizer] Use "fast mmap" kernel flag for shadow memory on macOS 10.13.4+

[Kuba (Brecka) Mracek via Phabricator via llvm-commits]

kubamracek created this revision.
kubamracek added reviewers: dvyukov, george.karpenkov, delcypher, kcc, eugenis.
kubamracek added a project: Sanitizers.
Herald added a subscriber: Sanitizers.

This speeds up process startup and teardown and also reduces lock contention when running multiple ASanified/TSanified processes simultaneously. Should greatly improve lit testing time.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D48445

Files:
  lib/asan/asan_rtl.cc
  lib/sanitizer_common/sanitizer_common.h
  lib/sanitizer_common/sanitizer_fuchsia.cc
  lib/sanitizer_common/sanitizer_linux.cc
  lib/sanitizer_common/sanitizer_mac.cc
  lib/sanitizer_common/sanitizer_mac.h
  lib/sanitizer_common/sanitizer_posix_libcdep.cc
  lib/sanitizer_common/sanitizer_rtems.cc
  lib/sanitizer_common/sanitizer_win.cc
  lib/tsan/rtl/tsan_rtl.cc

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