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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 // crash_report.cc : Implementation crash reporting. | |
6 #include "chrome_frame/crash_reporting/crash_report.h" | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "base/synchronization/lock.h" | |
10 #include "breakpad/src/client/windows/handler/exception_handler.h" | |
11 #include "chrome_frame/crash_reporting/crash_metrics.h" | |
12 | |
13 // TODO(joshia): factor out common code with chrome used for crash reporting | |
14 const wchar_t kGoogleUpdatePipeName[] = L"\\\\.\\pipe\\GoogleCrashServices\\"; | |
15 | |
16 // This lock protects against concurrent access to g_breakpad. | |
17 static base::Lock g_breakpad_lock; | |
18 static google_breakpad::ExceptionHandler* g_breakpad = NULL; | |
19 | |
20 // These minidump flag combinations have been tested safe against the | |
21 // DbgHelp.dll version that ships with Windows XP SP2. | |
22 const MINIDUMP_TYPE kSmallDumpType = static_cast<MINIDUMP_TYPE>( | |
23 MiniDumpWithProcessThreadData | // Get PEB and TEB. | |
24 MiniDumpWithUnloadedModules); // Get unloaded modules when available. | |
25 | |
26 const MINIDUMP_TYPE kLargerDumpType = static_cast<MINIDUMP_TYPE>( | |
27 MiniDumpWithProcessThreadData | // Get PEB and TEB. | |
28 MiniDumpWithUnloadedModules | // Get unloaded modules when available. | |
29 MiniDumpWithIndirectlyReferencedMemory); // Get memory referenced by stack. | |
30 | |
31 // Large dump with all process memory. | |
32 const MINIDUMP_TYPE kFullDumpType = static_cast<MINIDUMP_TYPE>( | |
33 MiniDumpWithFullMemory | // Full memory from process. | |
34 MiniDumpWithProcessThreadData | // Get PEB and TEB. | |
35 MiniDumpWithHandleData | // Get all handle information. | |
36 MiniDumpWithUnloadedModules); // Get unloaded modules when available. | |
37 | |
38 #pragma code_seg(push, ".text$va") | |
39 static void veh_segment_start() {} | |
40 #pragma code_seg(pop) | |
41 | |
42 #pragma code_seg(push, ".text$vz") | |
43 static void veh_segment_end() {} | |
44 #pragma code_seg(pop) | |
45 | |
46 // Place code in .text$veh_m. | |
47 #pragma code_seg(push, ".text$vm") | |
48 #include "chrome_frame/crash_reporting/vectored_handler-impl.h" | |
49 | |
50 class CrashHandler { | |
51 public: | |
52 CrashHandler() : veh_id_(NULL), handler_(&crash_api_) {} | |
53 | |
54 // Note that breakpad_lock is used to protect accesses to breakpad and must | |
55 // be held when Init() is called. | |
56 bool Init(google_breakpad::ExceptionHandler* breakpad, | |
57 base::Lock* breakpad_lock); | |
58 | |
59 void Shutdown(); | |
60 private: | |
61 VectoredHandlerT<CrashHandlerTraits> handler_; | |
62 CrashHandlerTraits crash_api_; | |
63 void* veh_id_; | |
64 | |
65 static LONG WINAPI VectoredHandlerEntryPoint(EXCEPTION_POINTERS* exptrs); | |
66 }; | |
67 | |
68 static CrashHandler g_crash_handler; | |
69 | |
70 // Turn off FPO optimization, so ::RtlCaptureStackBackTrace returns sane result. | |
71 #pragma optimize("y", off) | |
72 LONG WINAPI CrashHandler::VectoredHandlerEntryPoint( | |
73 EXCEPTION_POINTERS* exptrs) { | |
74 return g_crash_handler.handler_.Handler(exptrs); | |
75 } | |
76 #pragma optimize("y", on) | |
77 | |
78 #pragma code_seg(pop) | |
79 | |
80 bool CrashHandler::Init(google_breakpad::ExceptionHandler* breakpad, | |
81 base::Lock* breakpad_lock) { | |
82 DCHECK(breakpad); | |
83 DCHECK(breakpad_lock); | |
84 breakpad_lock->AssertAcquired(); | |
85 | |
86 if (veh_id_) | |
87 return true; | |
88 | |
89 crash_api_.Init(&veh_segment_start, &veh_segment_end, | |
90 &WriteMinidumpForException); | |
91 | |
92 void* id = ::AddVectoredExceptionHandler(FALSE, &VectoredHandlerEntryPoint); | |
93 if (id != NULL) { | |
94 veh_id_ = id; | |
95 return true; | |
96 } else { | |
97 crash_api_.Shutdown(); | |
98 return false; | |
99 } | |
100 } | |
101 | |
102 void CrashHandler::Shutdown() { | |
103 if (veh_id_) { | |
104 ::RemoveVectoredExceptionHandler(veh_id_); | |
105 veh_id_ = NULL; | |
106 } | |
107 | |
108 crash_api_.Shutdown(); | |
109 } | |
110 | |
111 std::wstring GetCrashServerPipeName(const std::wstring& user_sid) { | |
112 std::wstring pipe_name = kGoogleUpdatePipeName; | |
113 pipe_name += user_sid; | |
114 return pipe_name; | |
115 } | |
116 | |
117 bool InitializeVectoredCrashReportingWithPipeName( | |
118 bool full_dump, | |
119 const wchar_t* pipe_name, | |
120 const std::wstring& dump_path, | |
121 google_breakpad::CustomClientInfo* client_info) { | |
122 base::AutoLock lock(g_breakpad_lock); | |
123 if (g_breakpad) | |
124 return true; | |
125 | |
126 if (dump_path.empty()) { | |
127 return false; | |
128 } | |
129 | |
130 // TODO(siggi): Consider switching to kSmallerDumpType post-beta. | |
131 MINIDUMP_TYPE dump_type = full_dump ? kFullDumpType : kLargerDumpType; | |
132 g_breakpad = new google_breakpad::ExceptionHandler( | |
133 dump_path, NULL, NULL, NULL, | |
134 google_breakpad::ExceptionHandler::HANDLER_INVALID_PARAMETER | | |
135 google_breakpad::ExceptionHandler::HANDLER_PURECALL, dump_type, | |
136 pipe_name, client_info); | |
137 | |
138 if (!g_breakpad) | |
139 return false; | |
140 | |
141 if (!g_crash_handler.Init(g_breakpad, &g_breakpad_lock)) { | |
142 delete g_breakpad; | |
143 g_breakpad = NULL; | |
144 return false; | |
145 } | |
146 | |
147 return true; | |
148 } | |
149 | |
150 bool InitializeVectoredCrashReporting( | |
151 bool full_dump, | |
152 const wchar_t* user_sid, | |
153 const std::wstring& dump_path, | |
154 google_breakpad::CustomClientInfo* client_info) { | |
155 DCHECK(user_sid); | |
156 DCHECK(client_info); | |
157 | |
158 std::wstring pipe_name = GetCrashServerPipeName(user_sid); | |
159 | |
160 return InitializeVectoredCrashReportingWithPipeName(full_dump, | |
161 pipe_name.c_str(), | |
162 dump_path, | |
163 client_info); | |
164 } | |
165 | |
166 bool ShutdownVectoredCrashReporting() { | |
167 g_crash_handler.Shutdown(); | |
168 base::AutoLock lock(g_breakpad_lock); | |
169 delete g_breakpad; | |
170 g_breakpad = NULL; | |
171 return true; | |
172 } | |
173 | |
174 bool WriteMinidumpForException(EXCEPTION_POINTERS* p) { | |
175 base::AutoLock lock(g_breakpad_lock); | |
176 CrashMetricsReporter::GetInstance()->IncrementMetric( | |
177 CrashMetricsReporter::CRASH_COUNT); | |
178 bool success = false; | |
179 if (g_breakpad) { | |
180 success = g_breakpad->WriteMinidumpForException(p); | |
181 } | |
182 return success; | |
183 } | |
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