diff options
Diffstat (limited to 'src/processor')
| -rw-r--r-- | src/processor/stack_frame_symbolizer.cc | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/processor/stack_frame_symbolizer.cc b/src/processor/stack_frame_symbolizer.cc new file mode 100644 index 00000000..a4e26512 --- /dev/null +++ b/src/processor/stack_frame_symbolizer.cc @@ -0,0 +1,128 @@ +// Copyright (c) 2012 Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Implementation of StackFrameSymbolizer, which encapsulates the logic of how +// SourceLineResolverInterface interacts with SymbolSupplier to fill source +// line information in a stack frame, and also looks up WindowsFrameInfo or +// CFIFrameInfo for a stack frame. + +#include "google_breakpad/processor/stack_frame_symbolizer.h" + +#include <assert.h> + +#include "google_breakpad/processor/code_module.h" +#include "google_breakpad/processor/code_modules.h" +#include "google_breakpad/processor/source_line_resolver_interface.h" +#include "google_breakpad/processor/stack_frame.h" +#include "google_breakpad/processor/symbol_supplier.h" +#include "google_breakpad/processor/system_info.h" +#include "processor/linked_ptr.h" +#include "processor/logging.h" +#include "processor/scoped_ptr.h" + +namespace google_breakpad { + +StackFrameSymbolizer::StackFrameSymbolizer( + SymbolSupplier* supplier, + SourceLineResolverInterface* resolver) : supplier_(supplier), + resolver_(resolver) { } + +StackFrameSymbolizer::SymbolizerResult StackFrameSymbolizer::FillSourceLineInfo( + const CodeModules* modules, + const SystemInfo* system_info, + StackFrame* frame) { + assert(frame); + + if (!modules) return ERROR; + const CodeModule* module = modules->GetModuleForAddress(frame->instruction); + if (!module) return ERROR; + frame->module = module; + + if (!resolver_) return ERROR; // no resolver. + // If module is known to have missing symbol file, return. + if (no_symbol_modules_.find(module->code_file()) != + no_symbol_modules_.end()) { + return ERROR; + } + + // If module is already loaded, go ahead to fill source line info and return. + if (resolver_->HasModule(frame->module)) { + resolver_->FillSourceLineInfo(frame); + return NO_ERROR; + } + + // Module needs to fetch symbol file. First check to see if supplier exists. + if (!supplier_) { + return ERROR; + } + + // Start fetching symbol from supplier. + string symbol_file; + char* symbol_data = NULL; + SymbolSupplier::SymbolResult symbol_result = supplier_->GetCStringSymbolData( + module, system_info, &symbol_file, &symbol_data); + + switch (symbol_result) { + case SymbolSupplier::FOUND: { + bool load_success = resolver_->LoadModuleUsingMemoryBuffer(frame->module, + symbol_data); + if (resolver_->ShouldDeleteMemoryBufferAfterLoadModule()) { + supplier_->FreeSymbolData(module); + } + + if (load_success) { + resolver_->FillSourceLineInfo(frame); + return NO_ERROR; + } else { + BPLOG(ERROR) << "Failed to load symbol file in resolver."; + no_symbol_modules_.insert(module->code_file()); + return ERROR; + } + } + + case SymbolSupplier::NOT_FOUND: + no_symbol_modules_.insert(module->code_file()); + return ERROR; + + case SymbolSupplier::INTERRUPT: + return INTERRUPT; + } +} + +WindowsFrameInfo* StackFrameSymbolizer::FindWindowsFrameInfo( + const StackFrame* frame) { + return resolver_ ? resolver_->FindWindowsFrameInfo(frame) : NULL; +} + +CFIFrameInfo* StackFrameSymbolizer::FindCFIFrameInfo( + const StackFrame* frame) { + return resolver_ ? resolver_->FindCFIFrameInfo(frame) : NULL; +} + +} // namespace google_breakpad |