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[lib/Fuzzer] when -sync_command=<CMD> is given, periodically execute 'CMD CORPUS' to synchronize with other processes

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237617 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2015-05-18 21:34:20 +00:00
parent 825a528bbe
commit 05ef67b6b9
6 changed files with 29 additions and 1 deletions
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6
lib/Fuzzer/FuzzerInternal.h
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@@ -43,6 +43,7 @@ void PrintASCII(const Unit &U, const char *PrintAfter = "");
std::string Hash(const Unit &U);
void SetTimer(int Seconds);
void PrintFileAsBase64(const std::string &Path);
void ExecuteCommand(const std::string &Command);
// Private copy of SHA1 implementation.
static const int kSHA1NumBytes = 20;
@@ -66,7 +67,9 @@ class Fuzzer {
bool Reload = true;
int PreferSmallDuringInitialShuffle = -1;
size_t MaxNumberOfRuns = ULONG_MAX;
int SyncTimeout = 600;
std::string OutputCorpus;
std::string SyncCommand;
std::vector<std::string> Tokens;
};
Fuzzer(UserCallback Callback, FuzzingOptions Options);
@@ -108,6 +111,8 @@ class Fuzzer {
void PrintStats(const char *Where, size_t Cov, const char *End = "\n");
void PrintUnitInASCIIOrTokens(const Unit &U, const char *PrintAfter = "");
void SyncCorpus();
// Trace-based fuzzing: we run a unit with some kind of tracing
// enabled and record potentially useful mutations. Then
// We apply these mutations one by one to the unit and run it again.
@@ -142,6 +147,7 @@ class Fuzzer {
UserCallback Callback;
FuzzingOptions Options;
system_clock::time_point ProcessStartTime = system_clock::now();
system_clock::time_point LastExternalSync = system_clock::now();
system_clock::time_point UnitStartTime;
long TimeOfLongestUnitInSeconds = 0;
long EpochOfLastReadOfOutputCorpus = 0;