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//===- FuzzerUtil.h - Internal header for the Fuzzer Utils ------*- C++ -* ===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// Util functions.
#include "FuzzerDefs.h"
namespace fuzzer {
void PrintHexArray(const Unit &U, const char *PrintAfter = "");
void PrintHexArray(const uint8_t *Data, size_t Size,
const char *PrintAfter = "");
void PrintASCII(const uint8_t *Data, size_t Size, const char *PrintAfter = "");
void PrintASCII(const Unit &U, const char *PrintAfter = "");
// Changes U to contain only ASCII (isprint+isspace) characters.
// Returns true iff U has been changed.
bool ToASCII(uint8_t *Data, size_t Size);
bool IsASCII(const Unit &U);
bool IsASCII(const uint8_t *Data, size_t Size);
std::string Base64(const Unit &U);
void PrintPC(const char *SymbolizedFMT, const char *FallbackFMT, uintptr_t PC);
std::string DescribePC(const char *SymbolizedFMT, uintptr_t PC);
unsigned NumberOfCpuCores();
bool ExecuteCommandAndReadOutput(const std::string &Command, std::string *Out);
// Platform specific functions.
void SetSignalHandler(const FuzzingOptions& Options);
void SleepSeconds(int Seconds);
unsigned long GetPid();
size_t GetPeakRSSMb();
int ExecuteCommand(const std::string &Command);
FILE *OpenProcessPipe(const char *Command, const char *Mode);
const void *SearchMemory(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen);
std::string CloneArgsWithoutX(const std::vector<std::string> &Args,
const char *X1, const char *X2);
inline std::string CloneArgsWithoutX(const std::vector<std::string> &Args,
const char *X) {
return CloneArgsWithoutX(Args, X, X);
inline std::pair<std::string, std::string> SplitBefore(std::string X,
std::string S) {
auto Pos = S.find(X);
if (Pos == std::string::npos)
return std::make_pair(S, "");
return std::make_pair(S.substr(0, Pos), S.substr(Pos));
std::string DisassembleCmd(const std::string &FileName);
std::string SearchRegexCmd(const std::string &Regex);
size_t SimpleFastHash(const uint8_t *Data, size_t Size);
} // namespace fuzzer