crash_generation_client.cc revision 14889c340ffe6edeb362232318a8723a96b43a22 
1// Copyright (c) 2010 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
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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
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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
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25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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29
30#include "client/mac/crash_generation/crash_generation_client.h"
31
32#include "client/mac/crash_generation/crash_generation_server.h"
33#include "common/mac/MachIPC.h"
34
35namespace google_breakpad {
36
37bool CrashGenerationClient::RequestDumpForException(
38    int exception_type,
39    int exception_code,
40    int exception_subcode,
41    mach_port_t crashing_thread) {
42  // The server will send a message to this port indicating that it
43  // has finished its work.
44  ReceivePort acknowledge_port;
45
46  MachSendMessage message(kDumpRequestMessage);
47  message.AddDescriptor(mach_task_self());            // this task
48  message.AddDescriptor(crashing_thread);             // crashing thread
49  message.AddDescriptor(mach_thread_self());          // handler thread
50  message.AddDescriptor(acknowledge_port.GetPort());  // message receive port
51
52  ExceptionInfo info;
53  info.exception_type = exception_type;
54  info.exception_code = exception_code;
55  info.exception_subcode = exception_subcode;
56  message.SetData(&info, sizeof(info));
57
58  const mach_msg_timeout_t kSendTimeoutMs = 2 * 1000;
59  kern_return_t result = sender_.SendMessage(message, kSendTimeoutMs);
60  if (result != KERN_SUCCESS)
61    return false;
62
63  // Give the server slightly longer to reply since it has to
64  // inspect this task and write the minidump.
65  const mach_msg_timeout_t kReceiveTimeoutMs = 5 * 1000;
66  MachReceiveMessage acknowledge_message;
67  result = acknowledge_port.WaitForMessage(&acknowledge_message,
68					   kReceiveTimeoutMs);
69
70  return result == KERN_SUCCESS;
71}
72
73}  // namespace google_breakpad
74