1 //===- FuzzerUtil.cpp - Misc utils ----------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 // Misc utils.
10 //===----------------------------------------------------------------------===//
11
12 #include "FuzzerInternal.h"
13 #include <iostream>
14 #include <sys/time.h>
15 #include <cassert>
16 #include <cstring>
17 #include <signal.h>
18
19 namespace fuzzer {
20
Print(const Unit & v,const char * PrintAfter)21 void Print(const Unit &v, const char *PrintAfter) {
22 for (auto x : v)
23 std::cerr << "0x" << std::hex << (unsigned) x << std::dec << ",";
24 std::cerr << PrintAfter;
25 }
26
PrintASCII(const Unit & U,const char * PrintAfter)27 void PrintASCII(const Unit &U, const char *PrintAfter) {
28 for (auto X : U) {
29 if (isprint(X))
30 std::cerr << X;
31 else
32 std::cerr << "\\x" << std::hex << (int)(unsigned)X << std::dec;
33 }
34 std::cerr << PrintAfter;
35 }
36
Hash(const Unit & in)37 std::string Hash(const Unit &in) {
38 size_t h1 = 0, h2 = 0;
39 for (auto x : in) {
40 h1 += x;
41 h1 *= 5;
42 h2 += x;
43 h2 *= 7;
44 }
45 return std::to_string(h1) + std::to_string(h2);
46 }
47
AlarmHandler(int,siginfo_t *,void *)48 static void AlarmHandler(int, siginfo_t *, void *) {
49 Fuzzer::StaticAlarmCallback();
50 }
51
SetTimer(int Seconds)52 void SetTimer(int Seconds) {
53 struct itimerval T {{Seconds, 0}, {Seconds, 0}};
54 std::cerr << "SetTimer " << Seconds << "\n";
55 int Res = setitimer(ITIMER_REAL, &T, nullptr);
56 assert(Res == 0);
57 struct sigaction sigact;
58 memset(&sigact, 0, sizeof(sigact));
59 sigact.sa_sigaction = AlarmHandler;
60 Res = sigaction(SIGALRM, &sigact, 0);
61 assert(Res == 0);
62 }
63
64 } // namespace fuzzer
65