link DependencyData structs together

Cache generation needs a way of quickly iterating over the unique potion
of the dependencies to be able to share them. By linking them together
we can reduce the speed penality (~ 80%) with only a small reduction in
saved size (~ 20%).

Git-Dch: Ignore

1 files changed, 3 insertions, 2 deletions

diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index 82c5d082b..4173326ca 100644
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -318,11 +318,12 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 	   map_pointer_t &DependencyData;
 	   map_pointer_t &NextRevDepends;
 	   map_pointer_t &NextDepends;
+	   map_pointer_t &NextData;
 	   DependencyProxy const * operator->() const { return this; }
 	   DependencyProxy * operator->() { return this; }
 	};
-	inline DependencyProxy operator->() const {return { S2->Version, S2->Package, S->ID, S2->Type, S2->CompareOp, S->ParentVer, S->DependencyData, S->NextRevDepends, S->NextDepends };}
-	inline DependencyProxy operator->() {return { S2->Version, S2->Package, S->ID, S2->Type, S2->CompareOp, S->ParentVer, S->DependencyData, S->NextRevDepends, S->NextDepends };}
+	inline DependencyProxy operator->() const {return { S2->Version, S2->Package, S->ID, S2->Type, S2->CompareOp, S->ParentVer, S->DependencyData, S->NextRevDepends, S->NextDepends, S2->NextData };}
+	inline DependencyProxy operator->() {return { S2->Version, S2->Package, S->ID, S2->Type, S2->CompareOp, S->ParentVer, S->DependencyData, S->NextRevDepends, S->NextDepends, S2->NextData };}
 	void ReMap(void const * const oldMap, void const * const newMap)
 	{
 		Iterator<Dependency, DepIterator>::ReMap(oldMap, newMap);