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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-05-29 22:31:28 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-05-29 22:31:28 +0000 |
| commit | 3a91a308cdb78df8e50fdec2d64dfdb1e1f6bb8f (patch) | |
| tree | 9824d644e15c8847b21d83a166e78dd23d788d5b /lib/asan/asan_internal.h | |
| parent | c401872a6a445a7cacbb352a1c70e8d04dcdeb43 (diff) | |
Add descriptive names to sanitizer entries in /proc/self/maps. Helps debugging.
This is done by creating a named shared memory region, unlinking it
and setting up a private (i.e. copy-on-write) mapping of that instead
of a regular anonymous mapping. I've experimented with regular
(sparse) files, but they can not be scaled to the size of MSan shadow
mapping, at least on Linux/X86_64 and ext3 fs.
Controlled by a common flag, decorate_proc_maps, disabled by default.
This patch has a few shortcomings:
* not all mappings are annotated, especially in TSan.
* our handling of memset() of shadow via mmap() puts small anonymous
mappings inside larger named mappings, which looks ugly and can, in
theory, hit the mapping number limit.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@238621 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/asan/asan_internal.h')
| -rw-r--r-- | lib/asan/asan_internal.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/asan/asan_internal.h b/lib/asan/asan_internal.h index 394e46063..107e16ee3 100644 --- a/lib/asan/asan_internal.h +++ b/lib/asan/asan_internal.h @@ -93,7 +93,7 @@ void AppendToErrorMessageBuffer(const char *buffer); void *AsanDlSymNext(const char *sym); -void ReserveShadowMemoryRange(uptr beg, uptr end); +void ReserveShadowMemoryRange(uptr beg, uptr end, const char *name); // Platform-specific options. #if SANITIZER_MAC |