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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/processor/basic_code_modules.cc')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/processor/basic_code_modules.cc | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/processor/basic_code_modules.cc b/toolkit/crashreporter/google-breakpad/src/processor/basic_code_modules.cc new file mode 100644 index 000000000..48d971677 --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/processor/basic_code_modules.cc @@ -0,0 +1,155 @@ +// 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 <vector> + +#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 { + +using std::vector; + +BasicCodeModules::BasicCodeModules(const CodeModules *that) + : main_address_(0), map_() { + BPLOG_IF(ERROR, !that) << "BasicCodeModules::BasicCodeModules requires " + "|that|"; + assert(that); + + map_.SetEnableShrinkDown(that->IsModuleShrinkEnabled()); + + const CodeModule *main_module = that->GetMainModule(); + if (main_module) + main_address_ = main_module->base_address(); + + unsigned int count = that->module_count(); + for (unsigned int i = 0; i < count; ++i) { + // 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. + linked_ptr<const CodeModule> module(that->GetModuleAtIndex(i)->Copy()); + if (!map_.StoreRange(module->base_address(), module->size(), module)) { + BPLOG(ERROR) << "Module " << module->code_file() + << " could not be stored"; + } + } + + // Report modules with shrunk ranges. + for (unsigned int i = 0; i < count; ++i) { + linked_ptr<const CodeModule> module(that->GetModuleAtIndex(i)->Copy()); + uint64_t delta = 0; + if (map_.RetrieveRange(module->base_address() + module->size() - 1, + &module, NULL /* base */, &delta, NULL /* size */) && + delta > 0) { + BPLOG(INFO) << "The range for module " << module->code_file() + << " was shrunk down by " << HexString(delta) << " bytes."; + linked_ptr<CodeModule> shrunk_range_module(module->Copy()); + shrunk_range_module->SetShrinkDownDelta(delta); + shrunk_range_modules_.push_back(shrunk_range_module); + } + } + + // TODO(ivanpe): Report modules with conflicting ranges. The list of such + // modules should be copied from |that|. +} + +BasicCodeModules::BasicCodeModules() : main_address_(0), map_() { } + +BasicCodeModules::~BasicCodeModules() { +} + +unsigned int BasicCodeModules::module_count() const { + return map_.GetCount(); +} + +const CodeModule* BasicCodeModules::GetModuleForAddress( + uint64_t address) const { + linked_ptr<const CodeModule> module; + if (!map_.RetrieveRange(address, &module, NULL /* base */, NULL /* delta */, + NULL /* size */)) { + 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 /* base */, + NULL /* delta */, NULL /* size */)) { + 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); +} + +vector<linked_ptr<const CodeModule> > +BasicCodeModules::GetShrunkRangeModules() const { + return shrunk_range_modules_; +} + +bool BasicCodeModules::IsModuleShrinkEnabled() const { + return map_.IsShrinkDownEnabled(); +} + +} // namespace google_breakpad |