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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238081 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
//===- FuzzerUtil.cpp - Misc utils ----------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Misc utils.
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//===----------------------------------------------------------------------===//
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#include "FuzzerInternal.h"
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#include <sstream>
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#include <iomanip>
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#include <sys/time.h>
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#include <cassert>
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#include <cstring>
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#include <signal.h>
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#include <unistd.h>
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namespace fuzzer {
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void Print(const Unit &v, const char *PrintAfter) {
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for (auto x : v)
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Printf("0x%x,", (unsigned) x);
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Printf("%s", PrintAfter);
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}
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void PrintASCII(const Unit &U, const char *PrintAfter) {
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for (auto X : U) {
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if (isprint(X))
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Printf("%c", X);
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else
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Printf("\\x%x", (unsigned)X);
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}
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Printf("%s", PrintAfter);
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}
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std::string Hash(const Unit &U) {
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uint8_t Hash[kSHA1NumBytes];
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ComputeSHA1(U.data(), U.size(), Hash);
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std::stringstream SS;
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for (int i = 0; i < kSHA1NumBytes; i++)
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SS << std::hex << std::setfill('0') << std::setw(2) << (unsigned)Hash[i];
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return SS.str();
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}
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static void AlarmHandler(int, siginfo_t *, void *) {
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Fuzzer::StaticAlarmCallback();
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}
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void SetTimer(int Seconds) {
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struct itimerval T {{Seconds, 0}, {Seconds, 0}};
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Printf("SetTimer %d\n", Seconds);
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int Res = setitimer(ITIMER_REAL, &T, nullptr);
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assert(Res == 0);
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struct sigaction sigact;
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memset(&sigact, 0, sizeof(sigact));
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sigact.sa_sigaction = AlarmHandler;
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Res = sigaction(SIGALRM, &sigact, 0);
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assert(Res == 0);
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}
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int NumberOfCpuCores() {
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FILE *F = popen("nproc", "r");
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int N = 0;
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fscanf(F, "%d", &N);
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fclose(F);
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return N;
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}
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void ExecuteCommand(const std::string &Command) {
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system(Command.c_str());
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}
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} // namespace fuzzer
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