diff options
author | Alex Shlyapnikov <alekseys@google.com> | 2017-10-23 17:12:07 +0000 |
---|---|---|
committer | Alex Shlyapnikov <alekseys@google.com> | 2017-10-23 17:12:07 +0000 |
commit | a21db44b446dc6e7db373e6cc4c57c9cdbd768c9 (patch) | |
tree | acc1755d97ff247ff926634642d1d8ef5cba3fe1 /include | |
parent | e378f8791d2d42e4c3f26033ba20a1bf4b43d2d5 (diff) |
[Sanitizers] New sanitizer API to purge allocator quarantine.
Summary:
Purging allocator quarantine and returning memory to OS might be desired
between fuzzer iterations since, most likely, the quarantine is not
going to catch bugs in the code under fuzz, but reducing RSS might
significantly prolong the fuzzing session.
Reviewers: cryptoad
Subscribers: kubamracek, llvm-commits
Differential Revision: https://reviews.llvm.org/D39153
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@316347 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
-rw-r--r-- | include/sanitizer/allocator_interface.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/sanitizer/allocator_interface.h b/include/sanitizer/allocator_interface.h index 522063161..2d35804b3 100644 --- a/include/sanitizer/allocator_interface.h +++ b/include/sanitizer/allocator_interface.h @@ -76,6 +76,13 @@ extern "C" { void (*malloc_hook)(const volatile void *, size_t), void (*free_hook)(const volatile void *)); + /* Drains allocator quarantines (calling thread's and global ones), returns + freed memory back to OS and releases other non-essential internal allocator + resources in attempt to reduce process RSS. + Currently available with ASan only. + */ + void __sanitizer_purge_allocator(); + #ifdef __cplusplus } // extern "C" #endif |