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Diffstat (limited to 'docs/env_variables.md')
| -rw-r--r-- | docs/env_variables.md | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/docs/env_variables.md b/docs/env_variables.md index 7bbc0fdd..38a67bc7 100644 --- a/docs/env_variables.md +++ b/docs/env_variables.md @@ -231,6 +231,12 @@ 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 all modes) + + - Setting `AFL_LLVM_THREADSAFE_INST` will inject code that implements thread + safe counters. The overhead is a little bit higher compared to the older + non-thread safe case. Note that this disables neverzero (see below). + ### NOT_ZERO - Setting `AFL_LLVM_NOT_ZERO=1` during compilation will use counters |