The Tor Browser / file comparison
comparison: toolkit/crashreporter/google-breakpad/src/processor/stack_frame_symbolizer.cc
toolkit/crashreporter/google-breakpad/src/processor/stack_frame_symbolizer.cc
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:1be7c38f57d7 |
|---|---|
| 1 // Copyright (c) 2012 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 // Implementation of StackFrameSymbolizer, which encapsulates the logic of how | |
| 31 // SourceLineResolverInterface interacts with SymbolSupplier to fill source | |
| 32 // line information in a stack frame, and also looks up WindowsFrameInfo or | |
| 33 // CFIFrameInfo for a stack frame. | |
| 34 | |
| 35 #include "google_breakpad/processor/stack_frame_symbolizer.h" | |
| 36 | |
| 37 #include <assert.h> | |
| 38 | |
| 39 #include "common/scoped_ptr.h" | |
| 40 #include "google_breakpad/processor/code_module.h" | |
| 41 #include "google_breakpad/processor/code_modules.h" | |
| 42 #include "google_breakpad/processor/source_line_resolver_interface.h" | |
| 43 #include "google_breakpad/processor/stack_frame.h" | |
| 44 #include "google_breakpad/processor/symbol_supplier.h" | |
| 45 #include "google_breakpad/processor/system_info.h" | |
| 46 #include "processor/linked_ptr.h" | |
| 47 #include "common/logging.h" | |
| 48 | |
| 49 namespace google_breakpad { | |
| 50 | |
| 51 StackFrameSymbolizer::StackFrameSymbolizer( | |
| 52 SymbolSupplier* supplier, | |
| 53 SourceLineResolverInterface* resolver) : supplier_(supplier), | |
| 54 resolver_(resolver) { } | |
| 55 | |
| 56 StackFrameSymbolizer::SymbolizerResult StackFrameSymbolizer::FillSourceLineInfo( | |
| 57 const CodeModules* modules, | |
| 58 const SystemInfo* system_info, | |
| 59 StackFrame* frame) { | |
| 60 assert(frame); | |
| 61 | |
| 62 if (!modules) return kError; | |
| 63 const CodeModule* module = modules->GetModuleForAddress(frame->instruction); | |
| 64 if (!module) return kError; | |
| 65 frame->module = module; | |
| 66 | |
| 67 if (!resolver_) return kError; // no resolver. | |
| 68 // If module is known to have missing symbol file, return. | |
| 69 if (no_symbol_modules_.find(module->code_file()) != | |
| 70 no_symbol_modules_.end()) { | |
| 71 return kError; | |
| 72 } | |
| 73 | |
| 74 // If module is already loaded, go ahead to fill source line info and return. | |
| 75 if (resolver_->HasModule(frame->module)) { | |
| 76 resolver_->FillSourceLineInfo(frame); | |
| 77 return kNoError; | |
| 78 } | |
| 79 | |
| 80 // Module needs to fetch symbol file. First check to see if supplier exists. | |
| 81 if (!supplier_) { | |
| 82 return kError; | |
| 83 } | |
| 84 | |
| 85 // Start fetching symbol from supplier. | |
| 86 string symbol_file; | |
| 87 char* symbol_data = NULL; | |
| 88 SymbolSupplier::SymbolResult symbol_result = supplier_->GetCStringSymbolData( | |
| 89 module, system_info, &symbol_file, &symbol_data); | |
| 90 | |
| 91 switch (symbol_result) { | |
| 92 case SymbolSupplier::FOUND: { | |
| 93 bool load_success = resolver_->LoadModuleUsingMemoryBuffer(frame->module, | |
| 94 symbol_data); | |
| 95 if (resolver_->ShouldDeleteMemoryBufferAfterLoadModule()) { | |
| 96 supplier_->FreeSymbolData(module); | |
| 97 } | |
| 98 | |
| 99 if (load_success) { | |
| 100 resolver_->FillSourceLineInfo(frame); | |
| 101 return kNoError; | |
| 102 } else { | |
| 103 BPLOG(ERROR) << "Failed to load symbol file in resolver."; | |
| 104 no_symbol_modules_.insert(module->code_file()); | |
| 105 return kError; | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 case SymbolSupplier::NOT_FOUND: | |
| 110 no_symbol_modules_.insert(module->code_file()); | |
| 111 return kError; | |
| 112 | |
| 113 case SymbolSupplier::INTERRUPT: | |
| 114 return kInterrupt; | |
| 115 | |
| 116 default: | |
| 117 BPLOG(ERROR) << "Unknown SymbolResult enum: " << symbol_result; | |
| 118 return kError; | |
| 119 } | |
| 120 return kError; | |
| 121 } | |
| 122 | |
| 123 WindowsFrameInfo* StackFrameSymbolizer::FindWindowsFrameInfo( | |
| 124 const StackFrame* frame) { | |
| 125 return resolver_ ? resolver_->FindWindowsFrameInfo(frame) : NULL; | |
| 126 } | |
| 127 | |
| 128 CFIFrameInfo* StackFrameSymbolizer::FindCFIFrameInfo( | |
| 129 const StackFrame* frame) { | |
| 130 return resolver_ ? resolver_->FindCFIFrameInfo(frame) : NULL; | |
| 131 } | |
| 132 | |
| 133 } // namespace google_breakpad |
