void Fuzzer::Loop() {
while (true) {
size_t J1 = ChooseUnitIdxToMutate();;
SyncCorpus();
RereadOutputCorpus();
if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
return;
if (Options.MaxTotalTimeSec > 0 &&
secondsSinceProcessStartUp() >
static_cast<size_t>(Options.MaxTotalTimeSec))
return;
CurrentUnit = Corpus[J1];
// Optionally, cross with another unit.
if (Options.DoCrossOver && USF.GetRand().RandBool()) {
size_t J2 = ChooseUnitIdxToMutate();
if (!Corpus[J1].empty() && !Corpus[J2].empty()) {
assert(!Corpus[J2].empty());
CurrentUnit.resize(Options.MaxLen);
size_t NewSize = USF.CrossOver(
Corpus[J1].data(), Corpus[J1].size(), Corpus[J2].data(),
Corpus[J2].size(), CurrentUnit.data(), CurrentUnit.size());
assert(NewSize > 0 && "CrossOver returned empty unit");
assert(NewSize <= (size_t)Options.MaxLen &&
"CrossOver returned overisized unit");
CurrentUnit.resize(NewSize);
}
}
// Perform several mutations and runs.
MutateAndTestOne(&CurrentUnit);
}
}
void Fuzzer::Loop(size_t NumIterations) {
for (size_t i = 1; i <= NumIterations; i++) {
for (size_t J1 = 0; J1 < Corpus.size(); J1++) {
SyncCorpus();
RereadOutputCorpus();
if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
return;
// First, simply mutate the unit w/o doing crosses.
CurrentUnit = Corpus[J1];
MutateAndTestOne(&CurrentUnit);
// Now, cross with others.
if (Options.DoCrossOver && !Corpus[J1].empty()) {
for (size_t J2 = 0; J2 < Corpus.size(); J2++) {
CurrentUnit.resize(Options.MaxLen);
size_t NewSize = USF.CrossOver(
Corpus[J1].data(), Corpus[J1].size(), Corpus[J2].data(),
Corpus[J2].size(), CurrentUnit.data(), CurrentUnit.size());
assert(NewSize > 0 && "CrossOver returned empty unit");
assert(NewSize <= (size_t)Options.MaxLen &&
"CrossOver return overisized unit");
CurrentUnit.resize(NewSize);
MutateAndTestOne(&CurrentUnit);
}
}
}
}
}
void Fuzzer::Loop() {
system_clock::time_point LastCorpusReload = system_clock::now();
if (Options.DoCrossOver)
USF.SetCorpus(&Corpus);
while (true) {
SyncCorpus();
auto Now = system_clock::now();
if (duration_cast<seconds>(Now - LastCorpusReload).count()) {
RereadOutputCorpus();
LastCorpusReload = Now;
}
if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
break;
if (Options.MaxTotalTimeSec > 0 &&
secondsSinceProcessStartUp() >
static_cast<size_t>(Options.MaxTotalTimeSec))
break;
// Perform several mutations and runs.
MutateAndTestOne();
}
PrintStats("DONE ", "\n");
}