Module API (#32). r=waylonis, bryner

 - Introduces a standard API for dealing with modules.  MinidumpModule
   is now a concrete implementation of this API.  Code may interact with
   single modules using the CodeModule interface, and collections of
   modules using its container, the CodeModules interface.
 - CodeModule is used directly by SymbolSupplier implementations and
   SourceLineResolver.  Reliance on the specific implementation in
   MinidumpModule has been eliminated.
 - Module lists are now added to ProcessState objects.  Module references
   in each stack frame are now pointers to objects in these module lists.
 - The sample minidump_stackwalk tool prints the module list after printing
   all threads' stacks.

http://groups.google.com/group/airbag-dev/browse_frm/thread/a9c0550edde54cf8


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@74 4c0a9323-5329-0410-9bdc-e9ce6186880e

1 files changed, 29 insertions, 0 deletions

diff --git a/src/processor/range_map-inl.h b/src/processor/range_map-inl.h
index 74ce8513..2ead2e65 100644
--- a/src/processor/range_map-inl.h
+++ b/src/processor/range_map-inl.h
@@ -142,6 +142,35 @@ bool RangeMap<AddressType, EntryType>::RetrieveNearestRange(
 
 
 template<typename AddressType, typename EntryType>
+bool RangeMap<AddressType, EntryType>::RetrieveRangeAtIndex(
+    int index, EntryType *entry,
+    AddressType *entry_base, AddressType *entry_size) const {
+  if (!entry || index >= GetCount())
+    return false;
+
+  // Walk through the map.  Although it's ordered, it's not a vector, so it
+  // can't be addressed directly by index.
+  MapConstIterator iterator = map_.begin();
+  for (int this_index = 0; this_index < index; ++this_index)
+    ++iterator;
+
+  *entry = iterator->second.entry();
+  if (entry_base)
+    *entry_base = iterator->first;
+  if (entry_size)
+    *entry_size = iterator->first - iterator->second.base() + 1;
+
+  return true;
+}
+
+
+template<typename AddressType, typename EntryType>
+int RangeMap<AddressType, EntryType>::GetCount() const {
+  return map_.size();
+}
+
+
+template<typename AddressType, typename EntryType>
 void RangeMap<AddressType, EntryType>::Clear() {
   map_.clear();
 }