breakpad/linux/generate-test-dump.cc

   1 // Copyright (c) 2009, Google Inc.
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
   6 // met:
   7 //
   8 //     * Redistributions of source code must retain the above copyright
   9 // notice, this list of conditions and the following disclaimer.
  10 //     * Redistributions in binary form must reproduce the above
  11 // copyright notice, this list of conditions and the following disclaimer
  12 // in the documentation and/or other materials provided with the
  13 // distribution.
  14 //     * Neither the name of Google Inc. nor the names of its
  15 // contributors may be used to endorse or promote products derived from
  16 // this software without specific prior written permission.
  17 //
  18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30 // This code exists to generate minidump files for testing.
  31
  32 #include <stdlib.h>
  33
  34 #include <unistd.h>
  35
  36 #include "breakpad/src/client/linux/handler/exception_handler.h"
  37 #include "breakpad/src/common/linux/linux_libc_support.h"
  38 #include "third_party/lss/linux_syscall_support.h"
  39
  40 static bool DumpCallback(const google_breakpad::MinidumpDescriptor& descriptor,
  41                          void* context, bool success) {
  42   if (!success) {
  43     static const char msg[] = "Failed to write minidump\n";
  44     sys_write(2, msg, sizeof(msg) - 1);
  45     return false;
  46   }
  47
  48   static const char msg[] = "Wrote minidump: ";
  49   sys_write(2, msg, sizeof(msg) - 1);
  50   sys_write(2, descriptor.path(), strlen(descriptor.path()));
  51   sys_write(2, "\n", 1);
  52
  53   return true;
  54 }
  55
  56 static void DoSomethingWhichCrashes() {
  57   int local_var = 1;
  58   *reinterpret_cast<volatile char*>(NULL) = 1;
  59 }
  60
  61 int main() {
  62   google_breakpad::MinidumpDescriptor minidump(".");
  63   google_breakpad::ExceptionHandler breakpad(minidump, NULL, DumpCallback, NULL,
  64                                              true, -1);
  65   DoSomethingWhichCrashes();
  66   return 0;
  67 }