Add static version of map wrappers and corresponding serializers.

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@714 4c0a9323-5329-0410-9bdc-e9ce6186880e
2026-01-05 14:08:20 +01:00 · 2010-10-15 20:36:31 +00:00 · 2010-10-15 20:36:31 +00:00 · 08730fc9a6
commit 08730fc9a6
parent 361f24eac7
21 changed files with 3205 additions and 46 deletions
--- a/src/processor/static_contained_range_map-inl.h
+++ b/src/processor/static_contained_range_map-inl.h
@ -0,0 +1,93 @@
+// 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__