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| author | hexcoder- <heiko@hexco.de> | 2021-05-30 12:43:30 +0200 |
|---|---|---|
| committer | hexcoder- <heiko@hexco.de> | 2021-05-30 12:43:30 +0200 |
| commit | eb74a7a8004e8281cda62525bbc1f3bbe7f5d9da (patch) | |
| tree | a951b63f4f038805fdf39eb6d8f4c70dc8e82f28 /docs/env_variables.md | |
| parent | c9539aa6b7fb4b9d2dae6c65446c525375388c2f (diff) | |
| download | afl++-eb74a7a8004e8281cda62525bbc1f3bbe7f5d9da.tar.gz | |
add documentation for AFL_LLVM_THREADSAFE_INST
Diffstat (limited to 'docs/env_variables.md')
| -rw-r--r-- | docs/env_variables.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/env_variables.md b/docs/env_variables.md index 0100ffac..d9a774aa 100644 --- a/docs/env_variables.md +++ b/docs/env_variables.md @@ -231,6 +231,11 @@ Then there are a few specific features that are only available in instrumentatio See [instrumentation/README.instrument_list.md](../instrumentation/README.instrument_list.md) for more information. +### Thread safe instrumentation counters (in mode LLVM CLASSIC) + - Setting `AFL_LLVM_THREADSAFE_INST` will inject code that implements thread safe counters. + The overhead is a bit higher compared to the older non-thread safe case. + `AFL_LLVM_NOT_ZERO` and `AFL_LLVM_SKIP_NEVERZERO` are supported (see below). + ### NOT_ZERO - Setting `AFL_LLVM_NOT_ZERO=1` during compilation will use counters |