Method Loop

fuzz/libfuzzer/FuzzerLoop.cpp:890–940

}

void Fuzzer::Loop(std::vector<SizedFile> &CorporaFiles) {
  auto FocusFunctionOrAuto = Options.FocusFunction;
  DFT.Init(Options.DataFlowTrace, &FocusFunctionOrAuto, CorporaFiles,
           MD.GetRand());
  TPC.SetFocusFunction(FocusFunctionOrAuto);
  ReadAndExecuteSeedCorpora(CorporaFiles);
  DFT.Clear();  // No need for DFT any more.
  TPC.SetPrintNewPCs(Options.PrintNewCovPcs);
  TPC.SetPrintNewFuncs(Options.PrintNewCovFuncs);
  system_clock::time_point LastCorpusReload = system_clock::now();

  TmpMaxMutationLen =
      Min(MaxMutationLen, Max(size_t(4), Corpus.MaxInputSize()));

  while (true) {
    auto Now = system_clock::now();
    if (!Options.StopFile.empty() &&
        !FileToVector(Options.StopFile, 1, false).empty())
      break;
    if (duration_cast<seconds>(Now - LastCorpusReload).count() >=
        Options.ReloadIntervalSec) {
      RereadOutputCorpus(MaxInputLen);
      LastCorpusReload = system_clock::now();
    }
    if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
      break;
    if (TimedOut())
      break;

    // Update TmpMaxMutationLen
    if (Options.LenControl) {
      if (TmpMaxMutationLen < MaxMutationLen &&
          TotalNumberOfRuns - LastCorpusUpdateRun >
              Options.LenControl * Log(TmpMaxMutationLen)) {
        TmpMaxMutationLen =
            Min(MaxMutationLen, TmpMaxMutationLen + Log(TmpMaxMutationLen));
        LastCorpusUpdateRun = TotalNumberOfRuns;
      }
    } else {
      TmpMaxMutationLen = MaxMutationLen;
    }

    // Perform several mutations and runs.
    MutateAndTestOne();

    PurgeAllocator();
  }

  PrintStats("DONE  ", "\n");
  MD.PrintRecommendedDictionary();
}

void Fuzzer::MinimizeCrashLoop(const Unit &U) {
  if (U.size() <= 1)