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//===- FuzzerUtil.cpp - Misc utils ----------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Misc utils.
//===----------------------------------------------------------------------===//
#include "FuzzerInternal.h"
#include <sstream>
#include <iomanip>
#include <iostream>
#include <sys/time.h>
#include <cassert>
#include <cstring>
#include <signal.h>
#include <unistd.h>
namespace fuzzer {
void Print(const Unit &v, const char *PrintAfter) {
for (auto x : v)
std::cerr << "0x" << std::hex << (unsigned) x << std::dec << ",";
std::cerr << PrintAfter;
}
void PrintASCII(const Unit &U, const char *PrintAfter) {
for (auto X : U) {
if (isprint(X))
std::cerr << X;
else
std::cerr << "\\x" << std::hex << (int)(unsigned)X << std::dec;
}
std::cerr << PrintAfter;
}
std::string Hash(const Unit &U) {
uint8_t Hash[kSHA1NumBytes];
ComputeSHA1(U.data(), U.size(), Hash);
std::stringstream SS;
for (int i = 0; i < kSHA1NumBytes; i++)
SS << std::hex << std::setfill('0') << std::setw(2) << (unsigned)Hash[i];
return SS.str();
}
static void AlarmHandler(int, siginfo_t *, void *) {
Fuzzer::StaticAlarmCallback();
}
void SetTimer(int Seconds) {
struct itimerval T {{Seconds, 0}, {Seconds, 0}};
std::cerr << "SetTimer " << Seconds << "\n";
int Res = setitimer(ITIMER_REAL, &T, nullptr);
assert(Res == 0);
struct sigaction sigact;
memset(&sigact, 0, sizeof(sigact));
sigact.sa_sigaction = AlarmHandler;
Res = sigaction(SIGALRM, &sigact, 0);
assert(Res == 0);
}
int NumberOfCpuCores() {
FILE *F = popen("nproc", "r");
int N = 0;
fscanf(F, "%d", &N);
fclose(F);
return N;
}
void ExecuteCommand(const std::string &Command) {
system(Command.c_str());
}
} // namespace fuzzer
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