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81 lines
3.1 KiB
81 lines
3.1 KiB
14 years ago
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// Copyright (c) 2006, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// address_map.h: Address maps.
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//
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// An address map contains a set of objects keyed by address. Objects are
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// retrieved from the map by returning the object with the highest key less
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// than or equal to the lookup key.
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//
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// Author: Mark Mentovai
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#ifndef PROCESSOR_ADDRESS_MAP_H__
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#define PROCESSOR_ADDRESS_MAP_H__
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#include <map>
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namespace google_breakpad {
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template<typename AddressType, typename EntryType>
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class AddressMap {
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public:
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AddressMap() : map_() {}
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// Inserts an entry into the map. Returns false without storing the entry
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// if an entry is already stored in the map at the same address as specified
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// by the address argument.
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bool Store(const AddressType &address, const EntryType &entry);
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// Locates the entry stored at the highest address less than or equal to
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// the address argument. If there is no such range, returns false. The
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// entry is returned in entry, which is a required argument. If
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// entry_address is not NULL, it will be set to the address that the entry
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// was stored at.
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bool Retrieve(const AddressType &address,
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EntryType *entry, AddressType *entry_address) const;
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// Empties the address map, restoring it to the same state as when it was
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// initially created.
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void Clear();
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private:
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// Convenience types.
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typedef std::map<AddressType, EntryType> AddressToEntryMap;
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typedef typename AddressToEntryMap::const_iterator MapConstIterator;
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typedef typename AddressToEntryMap::value_type MapValue;
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// Maps the address of each entry to an EntryType.
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AddressToEntryMap map_;
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};
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} // namespace google_breakpad
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#endif // PROCESSOR_ADDRESS_MAP_H__
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