/thirdparty/breakpad/processor/static_contained_range_map-inl.h
http://github.com/tomahawk-player/tomahawk · C Header · 92 lines · 33 code · 16 blank · 43 comment · 6 complexity · b32980ab49ec5a17d7e030a5ae65a07e MD5 · raw file
- // 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.
- // static_contained_range_map-inl.h: Hierarchically-organized range map,
- // i.e., StaticContainedRangeMap implementation.
- //
- // See static_contained_range_map.h for documentation.
- //
- // Author: Siyang Xie (lambxsy@google.com)
- #ifndef PROCESSOR_STATIC_CONTAINED_RANGE_MAP_INL_H__
- #define PROCESSOR_STATIC_CONTAINED_RANGE_MAP_INL_H__
- #include "processor/static_contained_range_map.h"
- #include "processor/logging.h"
- namespace google_breakpad {
- template<typename AddressType, typename EntryType>
- StaticContainedRangeMap<AddressType, EntryType>::StaticContainedRangeMap(
- const char *base)
- : base_(*(reinterpret_cast<const AddressType*>(base))),
- entry_size_(*(reinterpret_cast<const u_int32_t*>(base + sizeof(base_)))),
- entry_ptr_(reinterpret_cast<const EntryType *>(
- base + sizeof(base_) + sizeof(entry_size_))),
- map_(base + sizeof(base_) + sizeof(entry_size_) + entry_size_) {
- if (entry_size_ == 0)
- entry_ptr_ = NULL;
- }
- template<typename AddressType, typename EntryType>
- bool StaticContainedRangeMap<AddressType, EntryType>::RetrieveRange(
- const AddressType &address, const EntryType *&entry) const {
- // Get an iterator to the child range whose high address is equal to or
- // greater than the supplied address. If the supplied address is higher
- // than all of the high addresses in the range, then this range does not
- // contain a child at address, so return false. If the supplied address
- // is lower than the base address of the child range, then it is not within
- // the child range, so return false.
- MapConstIterator iterator = map_.lower_bound(address);
- if (iterator == map_.end())
- return false;
- const char *memory_child =
- reinterpret_cast<const char*>(iterator.GetValuePtr());
- StaticContainedRangeMap child_map(memory_child);
- if (address < child_map.base_)
- return false;
- // The child in iterator->second contains the specified address. Find out
- // if it has a more-specific descendant that also contains it. If it does,
- // it will set |entry| appropriately. If not, set |entry| to the child.
- if (!child_map.RetrieveRange(address, entry))
- entry = child_map.entry_ptr_;
- return true;
- }
- } // namespace google_breakpad
- #endif // PROCESSOR_STATIC_CONTAINED_RANGE_MAP_INL_H__