void Fuzzer::PrepareCoverageBeforeRun() {
if (Options.UseCounters) {
size_t NumCounters = __sanitizer_get_number_of_counters();
CounterBitmap.resize(NumCounters);
__sanitizer_update_counter_bitset_and_clear_counters(0);
}
RecordBlockCoverage();
RecordCallerCalleeCoverage();
}
bool Fuzzer::CheckCoverageAfterRun() {
size_t OldCoverage = LastRecordedBlockCoverage;
size_t NewCoverage = RecordBlockCoverage();
size_t OldCallerCalleeCoverage = LastRecordedCallerCalleeCoverage;
size_t NewCallerCalleeCoverage = RecordCallerCalleeCoverage();
size_t NumNewBits = 0;
if (Options.UseCounters)
NumNewBits = __sanitizer_update_counter_bitset_and_clear_counters(
CounterBitmap.data());
return NewCoverage > OldCoverage ||
NewCallerCalleeCoverage > OldCallerCalleeCoverage || NumNewBits;
}
bool Fuzzer::CheckCoverageAfterRun() {
size_t OldCoverage = LastRecordedBlockCoverage;
size_t NewCoverage = RecordBlockCoverage();
size_t OldCallerCalleeCoverage = LastRecordedCallerCalleeCoverage;
size_t NewCallerCalleeCoverage = RecordCallerCalleeCoverage();
size_t NumNewBits = 0;
size_t OldPcMapSize = LastRecordedPcMapSize;
PcMapMergeCurrentToCombined();
size_t NewPcMapSize = PcMapCombinedSize();
LastRecordedPcMapSize = NewPcMapSize;
if (NewPcMapSize > OldPcMapSize)
return true;
if (Options.UseCounters)
NumNewBits = __sanitizer_update_counter_bitset_and_clear_counters(
CounterBitmap.data());
return NewCoverage > OldCoverage ||
NewCallerCalleeCoverage > OldCallerCalleeCoverage || NumNewBits;
}
