1 // Copyright (c) 2008, Google Inc.
2 // All rights reserved.
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16 // this software without specific prior written permission.
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30 // Author: Satoru Takabayashi
32 // This is a helper binary for testing signalhandler.cc. The actual test
33 // is done in signalhandler_unittest.sh.
35 #include "utilities.h"
42 #include "glog/logging.h"
44 using namespace GOOGLE_NAMESPACE;
46 void* DieInThread(void*) {
47 fprintf(stderr, "0x%lx is dying\n", pthread_self());
48 // Use volatile to prevent from these to be optimized away.
50 volatile int b = 1 / a;
53 void WriteToStdout(const char* data, int size) {
54 write(STDOUT_FILENO, data, size);
57 int main(int argc, char **argv) {
58 #if defined(HAVE_STACKTRACE) && defined(HAVE_SYMBOLIZE)
59 InitGoogleLogging(argv[0]);
60 #ifdef HAVE_LIB_GFLAGS
61 ParseCommandLineFlags(&argc, &argv, true);
63 InstallFailureSignalHandler();
64 const std::string command = argc > 1 ? argv[1] : "none";
65 if (command == "segv") {
66 // We'll check if this is outputted.
67 LOG(INFO) << "create the log file";
68 LOG(INFO) << "a message before segv";
69 // We assume 0xDEAD is not writable.
70 int *a = (int*)0xDEAD;
72 } else if (command == "loop") {
73 fprintf(stderr, "looping\n");
75 } else if (command == "die_in_thread") {
77 pthread_create(&thread, NULL, &DieInThread, NULL);
78 pthread_join(thread, NULL);
79 } else if (command == "dump_to_stdout") {
80 InstallFailureWriter(WriteToStdout);
83 // Tell the shell script