/thirdparty/breakpad/processor/basic_code_modules.cc
http://github.com/tomahawk-player/tomahawk · C++ · 123 lines · 63 code · 18 blank · 42 comment · 5 complexity · 380734171a7b46d57804c8a53a52a06a MD5 · raw file
- // Copyright (c) 2006, 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.
- // basic_code_modules.cc: Contains all of the CodeModule objects that
- // were loaded into a single process.
- //
- // See basic_code_modules.h for documentation.
- //
- // Author: Mark Mentovai
- #include "processor/basic_code_modules.h"
- #include <assert.h>
- #include "google_breakpad/processor/code_module.h"
- #include "processor/linked_ptr.h"
- #include "processor/logging.h"
- #include "processor/range_map-inl.h"
- namespace google_breakpad {
- BasicCodeModules::BasicCodeModules(const CodeModules *that)
- : main_address_(0),
- map_(new RangeMap<u_int64_t, linked_ptr<const CodeModule> >()) {
- BPLOG_IF(ERROR, !that) << "BasicCodeModules::BasicCodeModules requires "
- "|that|";
- assert(that);
- const CodeModule *main_module = that->GetMainModule();
- if (main_module)
- main_address_ = main_module->base_address();
- unsigned int count = that->module_count();
- for (unsigned int module_sequence = 0;
- module_sequence < count;
- ++module_sequence) {
- // Make a copy of the module and insert it into the map. Use
- // GetModuleAtIndex because ordering is unimportant when slurping the
- // entire list, and GetModuleAtIndex may be faster than
- // GetModuleAtSequence.
- const CodeModule *module = that->GetModuleAtIndex(module_sequence)->Copy();
- if (!map_->StoreRange(module->base_address(), module->size(),
- linked_ptr<const CodeModule>(module))) {
- BPLOG(ERROR) << "Module " << module->code_file() <<
- " could not be stored";
- }
- }
- }
- BasicCodeModules::~BasicCodeModules() {
- delete map_;
- }
- unsigned int BasicCodeModules::module_count() const {
- return map_->GetCount();
- }
- const CodeModule* BasicCodeModules::GetModuleForAddress(
- u_int64_t address) const {
- linked_ptr<const CodeModule> module;
- if (!map_->RetrieveRange(address, &module, NULL, NULL)) {
- BPLOG(INFO) << "No module at " << HexString(address);
- return NULL;
- }
- return module.get();
- }
- const CodeModule* BasicCodeModules::GetMainModule() const {
- return GetModuleForAddress(main_address_);
- }
- const CodeModule* BasicCodeModules::GetModuleAtSequence(
- unsigned int sequence) const {
- linked_ptr<const CodeModule> module;
- if (!map_->RetrieveRangeAtIndex(sequence, &module, NULL, NULL)) {
- BPLOG(ERROR) << "RetrieveRangeAtIndex failed for sequence " << sequence;
- return NULL;
- }
- return module.get();
- }
- const CodeModule* BasicCodeModules::GetModuleAtIndex(
- unsigned int index) const {
- // This class stores everything in a RangeMap, without any more-efficient
- // way to walk the list of CodeModule objects. Implement GetModuleAtIndex
- // using GetModuleAtSequence, which meets all of the requirements, and
- // in addition, guarantees ordering.
- return GetModuleAtSequence(index);
- }
- const CodeModules* BasicCodeModules::Copy() const {
- return new BasicCodeModules(this);
- }
- } // namespace google_breakpad