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aeffe1056f
R=mark at https://breakpad.appspot.com/535002/ git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1121 4c0a9323-5329-0410-9bdc-e9ce6186880e
93 lines
3.8 KiB
C++
93 lines
3.8 KiB
C++
// Copyright (c) 2010, 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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// static_contained_range_map-inl.h: Hierarchically-organized range map,
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// i.e., StaticContainedRangeMap implementation.
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//
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// See static_contained_range_map.h for documentation.
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//
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// Author: Siyang Xie (lambxsy@google.com)
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#ifndef PROCESSOR_STATIC_CONTAINED_RANGE_MAP_INL_H__
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#define PROCESSOR_STATIC_CONTAINED_RANGE_MAP_INL_H__
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#include "processor/static_contained_range_map.h"
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#include "processor/logging.h"
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namespace google_breakpad {
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template<typename AddressType, typename EntryType>
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StaticContainedRangeMap<AddressType, EntryType>::StaticContainedRangeMap(
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const char *base)
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: base_(*(reinterpret_cast<const AddressType*>(base))),
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entry_size_(*(reinterpret_cast<const uint32_t*>(base + sizeof(base_)))),
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entry_ptr_(reinterpret_cast<const EntryType *>(
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base + sizeof(base_) + sizeof(entry_size_))),
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map_(base + sizeof(base_) + sizeof(entry_size_) + entry_size_) {
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if (entry_size_ == 0)
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entry_ptr_ = NULL;
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}
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template<typename AddressType, typename EntryType>
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bool StaticContainedRangeMap<AddressType, EntryType>::RetrieveRange(
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const AddressType &address, const EntryType *&entry) const {
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// Get an iterator to the child range whose high address is equal to or
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// greater than the supplied address. If the supplied address is higher
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// than all of the high addresses in the range, then this range does not
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// contain a child at address, so return false. If the supplied address
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// is lower than the base address of the child range, then it is not within
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// the child range, so return false.
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MapConstIterator iterator = map_.lower_bound(address);
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if (iterator == map_.end())
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return false;
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const char *memory_child =
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reinterpret_cast<const char*>(iterator.GetValuePtr());
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StaticContainedRangeMap child_map(memory_child);
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if (address < child_map.base_)
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return false;
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// The child in iterator->second contains the specified address. Find out
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// if it has a more-specific descendant that also contains it. If it does,
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// it will set |entry| appropriately. If not, set |entry| to the child.
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if (!child_map.RetrieveRange(address, entry))
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entry = child_map.entry_ptr_;
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return true;
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}
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} // namespace google_breakpad
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#endif // PROCESSOR_STATIC_CONTAINED_RANGE_MAP_INL_H__
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