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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "base/debug/stack_trace.h" | 5 #include "base/debug/stack_trace.h" |
| 6 | 6 |
| 7 #include <windows.h> | 7 #include <windows.h> |
| 8 #include <dbghelp.h> | 8 #include <dbghelp.h> |
| 9 | 9 |
| 10 #include <iostream> | 10 #include <iostream> |
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| 29 // badly with breakpad if breakpad is invoked in a separate thread while | 29 // badly with breakpad if breakpad is invoked in a separate thread while |
| 30 // we are using the Sym* functions. This is because breakpad does now | 30 // we are using the Sym* functions. This is because breakpad does now |
| 31 // share a lock with this function. See this related bug: | 31 // share a lock with this function. See this related bug: |
| 32 // | 32 // |
| 33 // http://code.google.com/p/google-breakpad/issues/detail?id=311 | 33 // http://code.google.com/p/google-breakpad/issues/detail?id=311 |
| 34 // | 34 // |
| 35 // This is a very unlikely edge case, and the current solution is to | 35 // This is a very unlikely edge case, and the current solution is to |
| 36 // just ignore it. | 36 // just ignore it. |
| 37 class SymbolContext { | 37 class SymbolContext { |
| 38 public: | 38 public: |
| 39 static SymbolContext* Get() { | 39 static SymbolContext* GetInstance() { |
| 40 // We use a leaky singleton because code may call this during process | 40 // We use a leaky singleton because code may call this during process |
| 41 // termination. | 41 // termination. |
| 42 return | 42 return |
| 43 Singleton<SymbolContext, LeakySingletonTraits<SymbolContext> >::get(); | 43 Singleton<SymbolContext, LeakySingletonTraits<SymbolContext> >::get(); |
| 44 } | 44 } |
| 45 | 45 |
| 46 // Returns the error code of a failed initialization. | 46 // Returns the error code of a failed initialization. |
| 47 DWORD init_error() const { | 47 DWORD init_error() const { |
| 48 return init_error_; | 48 return init_error_; |
| 49 } | 49 } |
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| 172 count_ < arraysize(trace_)) { | 172 count_ < arraysize(trace_)) { |
| 173 trace_[count_++] = reinterpret_cast<void*>(stack_frame.AddrPC.Offset); | 173 trace_[count_++] = reinterpret_cast<void*>(stack_frame.AddrPC.Offset); |
| 174 } | 174 } |
| 175 } | 175 } |
| 176 | 176 |
| 177 void StackTrace::PrintBacktrace() { | 177 void StackTrace::PrintBacktrace() { |
| 178 OutputToStream(&std::cerr); | 178 OutputToStream(&std::cerr); |
| 179 } | 179 } |
| 180 | 180 |
| 181 void StackTrace::OutputToStream(std::ostream* os) { | 181 void StackTrace::OutputToStream(std::ostream* os) { |
| 182 SymbolContext* context = SymbolContext::Get(); | 182 SymbolContext* context = SymbolContext::GetInstance(); |
| 183 DWORD error = context->init_error(); | 183 DWORD error = context->init_error(); |
| 184 if (error != ERROR_SUCCESS) { | 184 if (error != ERROR_SUCCESS) { |
| 185 (*os) << "Error initializing symbols (" << error | 185 (*os) << "Error initializing symbols (" << error |
| 186 << "). Dumping unresolved backtrace:\n"; | 186 << "). Dumping unresolved backtrace:\n"; |
| 187 for (int i = 0; (i < count_) && os->good(); ++i) { | 187 for (int i = 0; (i < count_) && os->good(); ++i) { |
| 188 (*os) << "\t" << trace_[i] << "\n"; | 188 (*os) << "\t" << trace_[i] << "\n"; |
| 189 } | 189 } |
| 190 } else { | 190 } else { |
| 191 (*os) << "Backtrace:\n"; | 191 (*os) << "Backtrace:\n"; |
| 192 context->OutputTraceToStream(trace_, count_, os); | 192 context->OutputTraceToStream(trace_, count_, os); |
| 193 } | 193 } |
| 194 } | 194 } |
| 195 | 195 |
| 196 } // namespace debug | 196 } // namespace debug |
| 197 } // namespace base | 197 } // namespace base |
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