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

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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.
+//
+// map_serializers.h: defines templates for serializing std::map and its
+// wrappers: AddressMap, RangeMap, and ContainedRangeMap.
+//
+// Author: Siyang Xie (lambxsy@google.com)
+#ifndef PROCESSOR_MAP_SERIALIZERS_H__
+#define PROCESSOR_MAP_SERIALIZERS_H__
+#include <map>
+#include <string>
+#include "processor/simple_serializer.h"
+#include "processor/address_map-inl.h"
+#include "processor/range_map-inl.h"
+#include "processor/contained_range_map-inl.h"
+namespace google_breakpad {
+// StdMapSerializer allocates memory and serializes an std::map instance into a
+// chunk of memory data.
+template<typename Key, typename Value>
+class StdMapSerializer {
+public:
+// Calculate the memory size of serialized data.
+size_t SizeOf(const std::map<Key, Value> &m) const;
+// Writes the serialized data to memory with start address = dest,
+// and returns the "end" of data, i.e., return the address follow the final
+// byte of data.
+// NOTE: caller has to allocate enough memory before invoke Write() method.
+char* Write(const std::map<Key, Value> &m, char* dest) const;
+// Serializes a std::map object into a chunk of memory data with format
+// described in "StaticMap.h" comment.
+// Returns a pointer to the serialized data.  If size != NULL, *size is set
+// to the size of serialized data, i.e., SizeOf(m).
+// Caller has the ownership of memory allocated as "new char[]".
+char* Serialize(const std::map<Key, Value> &m, unsigned int *size) const;
+private:
+SimpleSerializer<Key> key_serializer_;
+SimpleSerializer<Value> value_serializer_;
+};
+// AddressMapSerializer allocates memory and serializes an AddressMap into a
+// chunk of memory data.
+template<typename Addr, typename Entry>
+class AddressMapSerializer {
+public:
+// Calculate the memory size of serialized data.
+size_t SizeOf(const AddressMap<Addr, Entry> &m) const {
+return std_map_serializer_.SizeOf(m.map_);
+}
+// Write the serialized data to specified memory location.  Return the "end"
+// of data, i.e., return the address after the final byte of data.
+// NOTE: caller has to allocate enough memory before invoke Write() method.
+char* Write(const AddressMap<Addr, Entry> &m, char *dest) const {
+return std_map_serializer_.Write(m.map_, dest);
+}
+// Serializes an AddressMap object into a chunk of memory data.
+// Returns a pointer to the serialized data.  If size != NULL, *size is set
+// to the size of serialized data, i.e., SizeOf(m).
+// Caller has the ownership of memory allocated as "new char[]".
+char* Serialize(const AddressMap<Addr, Entry> &m, unsigned int *size) const {
+return std_map_serializer_.Serialize(m.map_, size);
+}
+private:
+// AddressMapSerializer is a simple wrapper of StdMapSerializer, just as
+// AddressMap is a simple wrapper of std::map.
+StdMapSerializer<Addr, Entry> std_map_serializer_;
+};
+// RangeMapSerializer allocates memory and serializes a RangeMap instance into a
+// chunk of memory data.
+template<typename Address, typename Entry>
+class RangeMapSerializer {
+public:
+// Calculate the memory size of serialized data.
+size_t SizeOf(const RangeMap<Address, Entry> &m) const;
+// Write the serialized data to specified memory location.  Return the "end"
+// of data, i.e., return the address after the final byte of data.
+// NOTE: caller has to allocate enough memory before invoke Write() method.
+char* Write(const RangeMap<Address, Entry> &m, char* dest) const;
+// Serializes a RangeMap object into a chunk of memory data.
+// Returns a pointer to the serialized data.  If size != NULL, *size is set
+// to the size of serialized data, i.e., SizeOf(m).
+// Caller has the ownership of memory allocated as "new char[]".
+char* Serialize(const RangeMap<Address, Entry> &m, unsigned int *size) const;
+private:
+// Convenient type name for Range.
+typedef typename RangeMap<Address, Entry>::Range Range;
+// Serializer for RangeMap's key and Range::base_.
+SimpleSerializer<Address> address_serializer_;
+// Serializer for RangeMap::Range::entry_.
+SimpleSerializer<Entry> entry_serializer_;
+};
+// ContainedRangeMapSerializer allocates memory and serializes a
+// ContainedRangeMap instance into a chunk of memory data.
+template<class AddrType, class EntryType>
+class ContainedRangeMapSerializer {
+public:
+// Calculate the memory size of serialized data.
+size_t SizeOf(const ContainedRangeMap<AddrType, EntryType> *m) const;
+// Write the serialized data to specified memory location.  Return the "end"
+// of data, i.e., return the address after the final byte of data.
+// NOTE: caller has to allocate enough memory before invoke Write() method.
+char* Write(const ContainedRangeMap<AddrType, EntryType> *m,
+char* dest) const;
+// Serializes a ContainedRangeMap object into a chunk of memory data.
+// Returns a pointer to the serialized data.  If size != NULL, *size is set
+// to the size of serialized data, i.e., SizeOf(m).
+// Caller has the ownership of memory allocated as "new char[]".
+char* Serialize(const ContainedRangeMap<AddrType, EntryType> *m,
+unsigned int *size) const;
+private:
+// Convenient type name for the underlying map type.
+typedef std::map<AddrType, ContainedRangeMap<AddrType, EntryType>*> Map;
+// Serializer for addresses and entries stored in ContainedRangeMap.
+SimpleSerializer<AddrType> addr_serializer_;
+SimpleSerializer<EntryType> entry_serializer_;
+};
+}  // namespace google_breakpad
+#endif  // PROCESSOR_MAP_SERIALIZERS_H__

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toolkit/crashreporter/google-breakpad/src/processor/map_serializers.h