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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2014-05-21 09:02:13 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2014-05-21 09:02:13 +0000 |
| commit | 6f365cc753d8150ae694357281e4775ac6e365cf (patch) | |
| tree | 9e5c94cfc525292635964f034f96dbbc255cefe2 /lib/msan/msan_flags.h | |
| parent | 72a4588166670e397a15c4a97529c849dcb11b3f (diff) | |
[msan] Chained origins re-design.
Generalize StackDepot and create a new specialized instance of it to
efficiently (i.e. without duplicating stack trace data) store the
origin history tree.
This reduces memory usage for chained origins roughly by an order of
magnitude.
Most importantly, this new design allows us to put two limits on
stored history data (exposed in MSAN_OPTIONS) that help avoid
exponential growth in used memory on certain workloads.
See comments in lib/msan/msan_origin.h for more details.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@209284 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/msan/msan_flags.h')
| -rw-r--r-- | lib/msan/msan_flags.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/msan/msan_flags.h b/lib/msan/msan_flags.h index 93fa8a60d..a506bbed8 100644 --- a/lib/msan/msan_flags.h +++ b/lib/msan/msan_flags.h @@ -19,6 +19,8 @@ namespace __msan { // Flags. struct Flags { int exit_code; + int origin_history_size; + int origin_history_per_stack_limit; bool poison_heap_with_zeroes; // default: false bool poison_stack_with_zeroes; // default: false bool poison_in_malloc; // default: true |