/thirdparty/breakpad/third_party/glog/src/signalhandler_unittest.cc
http://github.com/tomahawk-player/tomahawk · C++ · 97 lines · 48 code · 6 blank · 43 comment · 15 complexity · 1f3e7fdcec61bee65b16e9c44c7cc50f MD5 · raw file
- // Copyright (c) 2008, Google Inc.
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following disclaimer
- // in the documentation and/or other materials provided with the
- // distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived from
- // this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- //
- // Author: Satoru Takabayashi
- //
- // This is a helper binary for testing signalhandler.cc. The actual test
- // is done in signalhandler_unittest.sh.
- #include "utilities.h"
- #include <pthread.h>
- #include <signal.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string>
- #include "glog/logging.h"
- using namespace GOOGLE_NAMESPACE;
- void* DieInThread(void*) {
- // We assume pthread_t is an integral number or a pointer, rather
- // than a complex struct. In some environments, pthread_self()
- // returns an uint64 but in some other environments pthread_self()
- // returns a pointer. Hence we use C-style cast here, rather than
- // reinterpret/static_cast, to support both types of environments.
- fprintf(stderr, "0x%lx is dying\n", (long)pthread_self());
- // Use volatile to prevent from these to be optimized away.
- volatile int a = 0;
- volatile int b = 1 / a;
- fprintf(stderr, "We should have died: b=%d\n", b);
- return NULL;
- }
- void WriteToStdout(const char* data, int size) {
- if (write(STDOUT_FILENO, data, size) < 0) {
- // Ignore errors.
- }
- }
- int main(int argc, char **argv) {
- #if defined(HAVE_STACKTRACE) && defined(HAVE_SYMBOLIZE)
- InitGoogleLogging(argv[0]);
- #ifdef HAVE_LIB_GFLAGS
- ParseCommandLineFlags(&argc, &argv, true);
- #endif
- InstallFailureSignalHandler();
- const std::string command = argc > 1 ? argv[1] : "none";
- if (command == "segv") {
- // We'll check if this is outputted.
- LOG(INFO) << "create the log file";
- LOG(INFO) << "a message before segv";
- // We assume 0xDEAD is not writable.
- int *a = (int*)0xDEAD;
- *a = 0;
- } else if (command == "loop") {
- fprintf(stderr, "looping\n");
- while (true);
- } else if (command == "die_in_thread") {
- pthread_t thread;
- pthread_create(&thread, NULL, &DieInThread, NULL);
- pthread_join(thread, NULL);
- } else if (command == "dump_to_stdout") {
- InstallFailureWriter(WriteToStdout);
- abort();
- } else {
- // Tell the shell script
- puts("OK");
- }
- #endif
- return 0;
- }