toolkit/crashreporter/google-breakpad/src/processor/static_range_map.h@6474c204b198 (annotated)
toolkit/crashreporter/google-breakpad/src/processor/static_range_map.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2010, Google Inc. |
| michael@0 | 2 | // All rights reserved. |
| michael@0 | 3 | // |
| michael@0 | 4 | // Redistribution and use in source and binary forms, with or without |
| michael@0 | 5 | // modification, are permitted provided that the following conditions are |
| michael@0 | 6 | // met: |
| michael@0 | 7 | // |
| michael@0 | 8 | // * Redistributions of source code must retain the above copyright |
| michael@0 | 9 | // notice, this list of conditions and the following disclaimer. |
| michael@0 | 10 | // * Redistributions in binary form must reproduce the above |
| michael@0 | 11 | // copyright notice, this list of conditions and the following disclaimer |
| michael@0 | 12 | // in the documentation and/or other materials provided with the |
| michael@0 | 13 | // distribution. |
| michael@0 | 14 | // * Neither the name of Google Inc. nor the names of its |
| michael@0 | 15 | // contributors may be used to endorse or promote products derived from |
| michael@0 | 16 | // this software without specific prior written permission. |
| michael@0 | 17 | // |
| michael@0 | 18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| michael@0 | 19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| michael@0 | 20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| michael@0 | 21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| michael@0 | 22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| michael@0 | 23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| michael@0 | 24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| michael@0 | 25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| michael@0 | 26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| michael@0 | 27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| michael@0 | 28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 29 | // |
| michael@0 | 30 | // static_range_map.h: StaticRangeMap. |
| michael@0 | 31 | // |
| michael@0 | 32 | // StaticRangeMap is similar as RangeMap. However, StaticRangeMap wraps a |
| michael@0 | 33 | // StaticMap instead of std::map, and does not support dynamic operations like |
| michael@0 | 34 | // StoreRange(...). StaticRangeMap provides same Retrieve*() interfaces as |
| michael@0 | 35 | // RangeMap. Please see range_map.h for more documentation. |
| michael@0 | 36 | // |
| michael@0 | 37 | // Author: Siyang Xie (lambxsy@google.com) |
| michael@0 | 38 | |
| michael@0 | 39 | #ifndef PROCESSOR_STATIC_RANGE_MAP_H__ |
| michael@0 | 40 | #define PROCESSOR_STATIC_RANGE_MAP_H__ |
| michael@0 | 41 | |
| michael@0 | 42 | |
| michael@0 | 43 | #include "processor/static_map-inl.h" |
| michael@0 | 44 | |
| michael@0 | 45 | namespace google_breakpad { |
| michael@0 | 46 | |
| michael@0 | 47 | // AddressType is basic type, e.g.: integer types, pointers etc |
| michael@0 | 48 | // EntryType could be a complex type, so we retrieve its pointer instead. |
| michael@0 | 49 | template<typename AddressType, typename EntryType> |
| michael@0 | 50 | class StaticRangeMap { |
| michael@0 | 51 | public: |
| michael@0 | 52 | StaticRangeMap(): map_() { } |
| michael@0 | 53 | explicit StaticRangeMap(const char *memory): map_(memory) { } |
| michael@0 | 54 | |
| michael@0 | 55 | // Locates the range encompassing the supplied address. If there is |
| michael@0 | 56 | // no such range, returns false. entry_base and entry_size, if non-NULL, |
| michael@0 | 57 | // are set to the base and size of the entry's range. |
| michael@0 | 58 | bool RetrieveRange(const AddressType &address, const EntryType *&entry, |
| michael@0 | 59 | AddressType *entry_base, AddressType *entry_size) const; |
| michael@0 | 60 | |
| michael@0 | 61 | // Locates the range encompassing the supplied address, if one exists. |
| michael@0 | 62 | // If no range encompasses the supplied address, locates the nearest range |
| michael@0 | 63 | // to the supplied address that is lower than the address. Returns false |
| michael@0 | 64 | // if no range meets these criteria. entry_base and entry_size, if |
| michael@0 | 65 | // non-NULL, are set to the base and size of the entry's range. |
| michael@0 | 66 | bool RetrieveNearestRange(const AddressType &address, const EntryType *&entry, |
| michael@0 | 67 | AddressType *entry_base, AddressType *entry_size) |
| michael@0 | 68 | const; |
| michael@0 | 69 | |
| michael@0 | 70 | // Treating all ranges as a list ordered by the address spaces that they |
| michael@0 | 71 | // occupy, locates the range at the index specified by index. Returns |
| michael@0 | 72 | // false if index is larger than the number of ranges stored. entry_base |
| michael@0 | 73 | // and entry_size, if non-NULL, are set to the base and size of the entry's |
| michael@0 | 74 | // range. |
| michael@0 | 75 | // |
| michael@0 | 76 | // RetrieveRangeAtIndex is not optimized for speedy operation. |
| michael@0 | 77 | bool RetrieveRangeAtIndex(int index, const EntryType *&entry, |
| michael@0 | 78 | AddressType *entry_base, AddressType *entry_size) |
| michael@0 | 79 | const; |
| michael@0 | 80 | |
| michael@0 | 81 | // Returns the number of ranges stored in the RangeMap. |
| michael@0 | 82 | inline int GetCount() const { return map_.size(); } |
| michael@0 | 83 | |
| michael@0 | 84 | private: |
| michael@0 | 85 | friend class ModuleComparer; |
| michael@0 | 86 | class Range { |
| michael@0 | 87 | public: |
| michael@0 | 88 | AddressType base() const { |
| michael@0 | 89 | return *(reinterpret_cast<const AddressType*>(this)); |
| michael@0 | 90 | } |
| michael@0 | 91 | const EntryType* entryptr() const { |
| michael@0 | 92 | return reinterpret_cast<const EntryType*>(this + sizeof(AddressType)); |
| michael@0 | 93 | } |
| michael@0 | 94 | }; |
| michael@0 | 95 | |
| michael@0 | 96 | // Convenience types. |
| michael@0 | 97 | typedef StaticRangeMap* SelfPtr; |
| michael@0 | 98 | typedef StaticMap<AddressType, Range> AddressToRangeMap; |
| michael@0 | 99 | typedef typename AddressToRangeMap::const_iterator MapConstIterator; |
| michael@0 | 100 | |
| michael@0 | 101 | AddressToRangeMap map_; |
| michael@0 | 102 | }; |
| michael@0 | 103 | |
| michael@0 | 104 | } // namespace google_breakpad |
| michael@0 | 105 | |
| michael@0 | 106 | #endif // PROCESSOR_STATIC_RANGE_MAP_H__ |
