The Tor Browser: comparison toolkit/crashreporter/google-breakpad/src/processor/module

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+:604b9bceb737
+// Copyright (c) 2010, 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.
+//
+// module_serializer.cc: ModuleSerializer implementation.
+//
+// See module_serializer.h for documentation.
+//
+// Author: Siyang Xie (lambxsy@google.com)
+#include "processor/module_serializer.h"
+#include <map>
+#include <string>
+#include "processor/basic_code_module.h"
+#include "processor/logging.h"
+namespace google_breakpad {
+// Definition of static member variable in SimplerSerializer<Funcion>, which
+// is declared in file "simple_serializer-inl.h"
+RangeMapSerializer< MemAddr, linked_ptr<BasicSourceLineResolver::Line> >
+SimpleSerializer<BasicSourceLineResolver::Function>::range_map_serializer_;
+size_t ModuleSerializer::SizeOf(const BasicSourceLineResolver::Module &module) {
+size_t total_size_alloc_ = 0;
+// Compute memory size for each map component in Module class.
+int map_index = 0;
+map_sizes_[map_index++] = files_serializer_.SizeOf(module.files_);
+map_sizes_[map_index++] = functions_serializer_.SizeOf(module.functions_);
+map_sizes_[map_index++] = pubsym_serializer_.SizeOf(module.public_symbols_);
+for (int i = 0; i < WindowsFrameInfo::STACK_INFO_LAST; ++i)
+map_sizes_[map_index++] =
+wfi_serializer_.SizeOf(&(module.windows_frame_info_[i]));
+map_sizes_[map_index++] = cfi_init_rules_serializer_.SizeOf(
+module.cfi_initial_rules_);
+map_sizes_[map_index++] = cfi_delta_rules_serializer_.SizeOf(
+module.cfi_delta_rules_);
+// Header size.
+total_size_alloc_ = kNumberMaps_ * sizeof(uint32_t);
+for (int i = 0; i < kNumberMaps_; ++i)
+total_size_alloc_ += map_sizes_[i];
+// Extra one byte for null terminator for C-string copy safety.
+++total_size_alloc_;
+return total_size_alloc_;
+}
+char *ModuleSerializer::Write(const BasicSourceLineResolver::Module &module,
+char *dest) {
+// Write header.
+memcpy(dest, map_sizes_, kNumberMaps_ * sizeof(uint32_t));
+dest += kNumberMaps_ * sizeof(uint32_t);
+// Write each map.
+dest = files_serializer_.Write(module.files_, dest);
+dest = functions_serializer_.Write(module.functions_, dest);
+dest = pubsym_serializer_.Write(module.public_symbols_, dest);
+for (int i = 0; i < WindowsFrameInfo::STACK_INFO_LAST; ++i)
+dest = wfi_serializer_.Write(&(module.windows_frame_info_[i]), dest);
+dest = cfi_init_rules_serializer_.Write(module.cfi_initial_rules_, dest);
+dest = cfi_delta_rules_serializer_.Write(module.cfi_delta_rules_, dest);
+// Write a null terminator.
+dest = SimpleSerializer<char>::Write(0, dest);
+return dest;
+}
+char* ModuleSerializer::Serialize(
+const BasicSourceLineResolver::Module &module, unsigned int *size) {
+// Compute size of memory to allocate.
+unsigned int size_to_alloc = SizeOf(module);
+// Allocate memory for serialized data.
+char *serialized_data = new char[size_to_alloc];
+if (!serialized_data) {
+BPLOG(ERROR) << "ModuleSerializer: memory allocation failed, "
+<< "size to alloc: " << size_to_alloc;
+if (size) *size = 0;
+return NULL;
+}
+// Write serialized data to allocated memory chunk.
+char *end_address = Write(module, serialized_data);
+// Verify the allocated memory size is equal to the size of data been written.
+unsigned int size_written =
+static_cast<unsigned int>(end_address - serialized_data);
+if (size_to_alloc != size_written) {
+BPLOG(ERROR) << "size_to_alloc differs from size_written: "
+<< size_to_alloc << " vs " << size_written;
+}
+// Set size and return the start address of memory chunk.
+if (size)
+*size = size_to_alloc;
+return serialized_data;
+}
+bool ModuleSerializer::SerializeModuleAndLoadIntoFastResolver(
+const BasicSourceLineResolver::ModuleMap::const_iterator &iter,
+FastSourceLineResolver *fast_resolver) {
+BPLOG(INFO) << "Converting symbol " << iter->first.c_str();
+// Cast SourceLineResolverBase::Module* to BasicSourceLineResolver::Module*.
+BasicSourceLineResolver::Module* basic_module =
+dynamic_cast<BasicSourceLineResolver::Module*>(iter->second);
+unsigned int size = 0;
+scoped_array<char> symbol_data(Serialize(*basic_module, &size));
+if (!symbol_data.get()) {
+BPLOG(ERROR) << "Serialization failed for module: " << basic_module->name_;
+return false;
+}
+BPLOG(INFO) << "Serialized Symbol Size " << size;
+// Copy the data into string.
+// Must pass string to LoadModuleUsingMapBuffer(), instead of passing char* to
+// LoadModuleUsingMemoryBuffer(), becaused of data ownership/lifetime issue.
+string symbol_data_string(symbol_data.get(), size);
+symbol_data.reset();
+scoped_ptr<CodeModule> code_module(
+new BasicCodeModule(0, 0, iter->first, "", "", "", ""));
+return fast_resolver->LoadModuleUsingMapBuffer(code_module.get(),
+symbol_data_string);
+}
+void ModuleSerializer::ConvertAllModules(
+const BasicSourceLineResolver *basic_resolver,
+FastSourceLineResolver *fast_resolver) {
+// Check for NULL pointer.
+if (!basic_resolver || !fast_resolver)
+return;
+// Traverse module list in basic resolver.
+BasicSourceLineResolver::ModuleMap::const_iterator iter;
+iter = basic_resolver->modules_->begin();
+for (; iter != basic_resolver->modules_->end(); ++iter)
+SerializeModuleAndLoadIntoFastResolver(iter, fast_resolver);
+}
+bool ModuleSerializer::ConvertOneModule(
+const string &moduleid,
+const BasicSourceLineResolver *basic_resolver,
+FastSourceLineResolver *fast_resolver) {
+// Check for NULL pointer.
+if (!basic_resolver || !fast_resolver)
+return false;
+BasicSourceLineResolver::ModuleMap::const_iterator iter;
+iter = basic_resolver->modules_->find(moduleid);
+if (iter == basic_resolver->modules_->end())
+return false;
+return SerializeModuleAndLoadIntoFastResolver(iter, fast_resolver);
+}
+char* ModuleSerializer::SerializeSymbolFileData(
+const string &symbol_data, unsigned int *size) {
+scoped_ptr<BasicSourceLineResolver::Module> module(
+new BasicSourceLineResolver::Module("no name"));
+scoped_array<char> buffer(new char[symbol_data.size() + 1]);
+strcpy(buffer.get(), symbol_data.c_str());
+if (!module->LoadMapFromMemory(buffer.get())) {
+return NULL;
+}
+buffer.reset(NULL);
+return Serialize(*(module.get()), size);
+}
+}  // namespace google_breakpad

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comparison: toolkit/crashreporter/google-breakpad/src/processor/module_serializer.cc

toolkit/crashreporter/google-breakpad/src/processor/module_serializer.cc