Libafl_libfuzzer: Timestamps are not preserved across crashes/timeouts

[domenukk]

If you launch the manager everytime, then the timestamp is not preserved across restarts

Originally posted by @tokatoka in #981 (comment)

[tokatoka]

I think this happens also in non-libafl_libfuzzer fuzzer

[tokatoka]

without afl_exec_sec then execs/sec is broken.
because when the restart happens the last_window_time is updated here
https://github.com/AFLplusplus/LibAFL/blob/main/libafl/src/monitors/mod.rs#L285

but the executions count adds the executions count even before the restart.
so the time is counter after the restart. but the execution count is from the very start of the fuzzing

[addisoncrump]

Do we just add that feature and it's fixed? 😅

[tokatoka]

yes. but there's still something that I don't understand with this bug. I'll debug it tomorrow