1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/toolkit/crashreporter/google-breakpad/src/processor/static_range_map.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,106 @@
1.4 +// Copyright (c) 2010, Google Inc.
1.5 +// All rights reserved.
1.6 +//
1.7 +// Redistribution and use in source and binary forms, with or without
1.8 +// modification, are permitted provided that the following conditions are
1.9 +// met:
1.10 +//
1.11 +// * Redistributions of source code must retain the above copyright
1.12 +// notice, this list of conditions and the following disclaimer.
1.13 +// * Redistributions in binary form must reproduce the above
1.14 +// copyright notice, this list of conditions and the following disclaimer
1.15 +// in the documentation and/or other materials provided with the
1.16 +// distribution.
1.17 +// * Neither the name of Google Inc. nor the names of its
1.18 +// contributors may be used to endorse or promote products derived from
1.19 +// this software without specific prior written permission.
1.20 +//
1.21 +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.22 +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.23 +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.24 +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
1.25 +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
1.26 +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
1.27 +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.28 +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.29 +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.30 +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.31 +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.32 +//
1.33 +// static_range_map.h: StaticRangeMap.
1.34 +//
1.35 +// StaticRangeMap is similar as RangeMap. However, StaticRangeMap wraps a
1.36 +// StaticMap instead of std::map, and does not support dynamic operations like
1.37 +// StoreRange(...). StaticRangeMap provides same Retrieve*() interfaces as
1.38 +// RangeMap. Please see range_map.h for more documentation.
1.39 +//
1.40 +// Author: Siyang Xie (lambxsy@google.com)
1.41 +
1.42 +#ifndef PROCESSOR_STATIC_RANGE_MAP_H__
1.43 +#define PROCESSOR_STATIC_RANGE_MAP_H__
1.44 +
1.45 +
1.46 +#include "processor/static_map-inl.h"
1.47 +
1.48 +namespace google_breakpad {
1.49 +
1.50 +// AddressType is basic type, e.g.: integer types, pointers etc
1.51 +// EntryType could be a complex type, so we retrieve its pointer instead.
1.52 +template<typename AddressType, typename EntryType>
1.53 +class StaticRangeMap {
1.54 + public:
1.55 + StaticRangeMap(): map_() { }
1.56 + explicit StaticRangeMap(const char *memory): map_(memory) { }
1.57 +
1.58 + // Locates the range encompassing the supplied address. If there is
1.59 + // no such range, returns false. entry_base and entry_size, if non-NULL,
1.60 + // are set to the base and size of the entry's range.
1.61 + bool RetrieveRange(const AddressType &address, const EntryType *&entry,
1.62 + AddressType *entry_base, AddressType *entry_size) const;
1.63 +
1.64 + // Locates the range encompassing the supplied address, if one exists.
1.65 + // If no range encompasses the supplied address, locates the nearest range
1.66 + // to the supplied address that is lower than the address. Returns false
1.67 + // if no range meets these criteria. entry_base and entry_size, if
1.68 + // non-NULL, are set to the base and size of the entry's range.
1.69 + bool RetrieveNearestRange(const AddressType &address, const EntryType *&entry,
1.70 + AddressType *entry_base, AddressType *entry_size)
1.71 + const;
1.72 +
1.73 + // Treating all ranges as a list ordered by the address spaces that they
1.74 + // occupy, locates the range at the index specified by index. Returns
1.75 + // false if index is larger than the number of ranges stored. entry_base
1.76 + // and entry_size, if non-NULL, are set to the base and size of the entry's
1.77 + // range.
1.78 + //
1.79 + // RetrieveRangeAtIndex is not optimized for speedy operation.
1.80 + bool RetrieveRangeAtIndex(int index, const EntryType *&entry,
1.81 + AddressType *entry_base, AddressType *entry_size)
1.82 + const;
1.83 +
1.84 + // Returns the number of ranges stored in the RangeMap.
1.85 + inline int GetCount() const { return map_.size(); }
1.86 +
1.87 + private:
1.88 + friend class ModuleComparer;
1.89 + class Range {
1.90 + public:
1.91 + AddressType base() const {
1.92 + return *(reinterpret_cast<const AddressType*>(this));
1.93 + }
1.94 + const EntryType* entryptr() const {
1.95 + return reinterpret_cast<const EntryType*>(this + sizeof(AddressType));
1.96 + }
1.97 + };
1.98 +
1.99 + // Convenience types.
1.100 + typedef StaticRangeMap* SelfPtr;
1.101 + typedef StaticMap<AddressType, Range> AddressToRangeMap;
1.102 + typedef typename AddressToRangeMap::const_iterator MapConstIterator;
1.103 +
1.104 + AddressToRangeMap map_;
1.105 +};
1.106 +
1.107 +} // namespace google_breakpad
1.108 +
1.109 +#endif // PROCESSOR_STATIC_RANGE_MAP_H__
