1// Copyright (c) 2014, 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// microdump_processor.cc: A microdump processor.
31//
32// See microdump_processor.h for documentation.
33
34#include "google_breakpad/processor/microdump_processor.h"
35
36#include <assert.h>
37
38#include <string>
39
40#include "common/using_std_string.h"
41#include "google_breakpad/processor/call_stack.h"
42#include "google_breakpad/processor/microdump.h"
43#include "google_breakpad/processor/process_state.h"
44#include "google_breakpad/processor/stackwalker.h"
45#include "google_breakpad/processor/stack_frame_symbolizer.h"
46#include "processor/logging.h"
47
48namespace google_breakpad {
49
50MicrodumpProcessor::MicrodumpProcessor(StackFrameSymbolizer* frame_symbolizer)
51    : frame_symbolizer_(frame_symbolizer) {
52  assert(frame_symbolizer);
53}
54
55MicrodumpProcessor::~MicrodumpProcessor() {}
56
57ProcessResult MicrodumpProcessor::Process(const string &microdump_contents,
58                                          ProcessState* process_state) {
59  assert(process_state);
60
61  process_state->Clear();
62
63  if (microdump_contents.empty()) {
64    BPLOG(ERROR) << "Microdump is empty.";
65    return PROCESS_ERROR_MINIDUMP_NOT_FOUND;
66  }
67
68  Microdump microdump(microdump_contents);
69  process_state->modules_ = microdump.GetModules()->Copy();
70  scoped_ptr<Stackwalker> stackwalker(
71      Stackwalker::StackwalkerForCPU(
72                            &process_state->system_info_,
73                            microdump.GetContext(),
74                            microdump.GetMemory(),
75                            process_state->modules_,
76                            frame_symbolizer_));
77
78  scoped_ptr<CallStack> stack(new CallStack());
79  if (stackwalker.get()) {
80    if (!stackwalker->Walk(stack.get(),
81                           &process_state->modules_without_symbols_,
82                           &process_state->modules_with_corrupt_symbols_)) {
83      BPLOG(INFO) << "Processing was interrupted.";
84      return PROCESS_SYMBOL_SUPPLIER_INTERRUPTED;
85    }
86  } else {
87    BPLOG(ERROR) << "No stackwalker found for microdump.";
88    return PROCESS_ERROR_NO_THREAD_LIST;
89  }
90
91  process_state->threads_.push_back(stack.release());
92  process_state->thread_memory_regions_.push_back(microdump.GetMemory());
93  process_state->crashed_ = true;
94  process_state->requesting_thread_ = 0;
95  process_state->system_info_ = *microdump.GetSystemInfo();
96
97  return PROCESS_OK;
98}
99
100}  // namespace google_breakpad
101