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| author | hexcoder <hexcoder-@users.noreply.github.com> | 2021-05-31 20:06:35 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-05-31 20:06:35 +0200 |
| commit | 21c8b225719835d8e4fecdb8bd6f42e61ea0600b (patch) | |
| tree | 46e844356f7cf88c08f9f9907caa11656a24f416 /docs/env_variables.md | |
| parent | 1a2da67ed0505c9ac0aa1048ba3d607f3c1aa639 (diff) | |
| parent | 97a1f89881878db9bd6b4cd666b3447a63818dcf (diff) | |
| download | afl++-21c8b225719835d8e4fecdb8bd6f42e61ea0600b.tar.gz | |
Merge pull request #948 from AFLplusplus/going_atomic
Going atomic
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 7bbc0fdd..b4b866ab 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 |