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// 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.h: ModuleSerializer serializes a loaded symbol,
// i.e., a loaded BasicSouceLineResolver::Module instance, into a memory
// chunk of data. The serialized data can be read and loaded by
// FastSourceLineResolver without CPU & memory-intensive parsing.
//
// Author: Siyang Xie (lambxsy@google.com)
#ifndef PROCESSOR_MODULE_SERIALIZER_H__
#define PROCESSOR_MODULE_SERIALIZER_H__
#include <map>
#include <string>
#include "google_breakpad/processor/basic_source_line_resolver.h"
#include "google_breakpad/processor/fast_source_line_resolver.h"
#include "processor/basic_source_line_resolver_types.h"
#include "processor/fast_source_line_resolver_types.h"
#include "processor/linked_ptr.h"
#include "processor/map_serializers-inl.h"
#include "processor/simple_serializer-inl.h"
#include "processor/windows_frame_info.h"
namespace google_breakpad {
// ModuleSerializer serializes a loaded BasicSourceLineResolver::Module into a
// chunk of memory data. ModuleSerializer also provides interface to compute
// memory size of the serialized data, write serialized data directly into
// memory, convert ASCII format symbol data into serialized binary data, and
// convert loaded BasicSourceLineResolver::Module into
// FastSourceLineResolver::Module.
class ModuleSerializer {
public:
// Compute the size of memory required to serialize a module. Return the
// total size needed for serialization.
size_t SizeOf(const BasicSourceLineResolver::Module &module);
// Write a module into an allocated memory chunk with required size.
// Return the "end" of data, i.e., the address after the final byte of data.
char* Write(const BasicSourceLineResolver::Module &module, char *dest);
// Serializes a loaded Module object into a chunk of memory data and returns
// the address of memory chunk. If size != NULL, *size is set to the memory
// size allocated for the serialized data.
// Caller takes the ownership of the memory chunk (allocated on heap), and
// owner should call delete [] to free the memory after use.
char* Serialize(const BasicSourceLineResolver::Module &module,
unsigned int *size = NULL);
// Given the string format symbol_data, produces a chunk of serialized data.
// Caller takes ownership of the serialized data (on heap), and owner should
// call delete [] to free the memory after use.
char* SerializeSymbolFileData(const string &symbol_data,
unsigned int *size = NULL);
// Serializes one loaded module with given moduleid in the basic source line
// resolver, and loads the serialized data into the fast source line resolver.
// Return false if the basic source line doesn't have a module with the given
// moduleid.
bool ConvertOneModule(const string &moduleid,
const BasicSourceLineResolver *basic_resolver,
FastSourceLineResolver *fast_resolver);
// Serializes all the loaded modules in a basic source line resolver, and
// loads the serialized data into a fast source line resolver.
void ConvertAllModules(const BasicSourceLineResolver *basic_resolver,
FastSourceLineResolver *fast_resolver);
private:
// Convenient type names.
typedef BasicSourceLineResolver::Line Line;
typedef BasicSourceLineResolver::Function Function;
typedef BasicSourceLineResolver::PublicSymbol PublicSymbol;
// Internal implementation for ConvertOneModule and ConvertAllModules methods.
bool SerializeModuleAndLoadIntoFastResolver(
const BasicSourceLineResolver::ModuleMap::const_iterator &iter,
FastSourceLineResolver *fast_resolver);
// Number of Maps that Module class contains.
static const int32_t kNumberMaps_ =
FastSourceLineResolver::Module::kNumberMaps_;
// Memory sizes required to serialize map components in Module.
u_int32_t map_sizes_[kNumberMaps_];
// Serializers for each individual map component in Module class.
StdMapSerializer<int, string> files_serializer_;
RangeMapSerializer<MemAddr, linked_ptr<Function> > functions_serializer_;
AddressMapSerializer<MemAddr, linked_ptr<PublicSymbol> > pubsym_serializer_;
ContainedRangeMapSerializer<MemAddr,
linked_ptr<WindowsFrameInfo> > wfi_serializer_;
RangeMapSerializer<MemAddr, string> cfi_init_rules_serializer_;
StdMapSerializer<MemAddr, string> cfi_delta_rules_serializer_;
};
} // namespace google_breakpad
#endif // PROCESSOR_MODULE_SERIALIZER_H__
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