[not part of build] Added simple enumeration mechanism to nsCacheEntryHashtable.

netwerk/cache/src/nsCacheEntry.cpp

@@ -389,6 +389,24 @@ nsCacheEntryHashTable::RemoveEntry( nsCacheEntry *cacheEntry)
 }
 
 
+void
+nsCacheEntryHashTable::VisitEntries( nsCacheEntryHashTable::Visitor *visitor)
+{
+    PL_DHashTableEnumerate(&table, VisitEntry, visitor);
+}
+
+
+PLDHashOperator
+nsCacheEntryHashTable::VisitEntry(PLDHashTable *table,
+                                  PLDHashEntryHdr *hashEntry,
+                                  PRUint32 number,
+                                  void *arg)
+{
+    nsCacheEntry *cacheEntry = ((nsCacheEntryHashTableEntry *)hashEntry)->cacheEntry;
+    nsCacheEntryHashTable::Visitor *visitor = (nsCacheEntryHashTable::Visitor*) arg;
+    return (visitor->VisitEntry(cacheEntry) ? PL_DHASH_NEXT : PL_DHASH_STOP);
+}
+
 /**
  *  hash table operation callback functions
  */

netwerk/cache/src/nsCacheEntry.h

@@ -201,8 +201,15 @@ public:
     nsCacheEntry *GetEntry( const nsCString * key);
     nsresult      AddEntry( nsCacheEntry *entry);
     void          RemoveEntry( nsCacheEntry *entry);
+    
     // XXX enumerate entries?
-
+    class Visitor {
+    public:
+        virtual PRBool VisitEntry( nsCacheEntry *entry) = 0;
+    };
+    
+    void          VisitEntries( Visitor *visitor);
+    
 private:
 
     // PLDHashTable operation callbacks
@@ -227,7 +234,12 @@ private:
                                            PLDHashEntryHdr * hdr,
                                            PRUint32          number,
                                            void *            arg);
-
+    static
+    PLDHashOperator       VisitEntry(PLDHashTable *         table,
+                                     PLDHashEntryHdr *      hdr,
+                                     PRUint32               number,
+                                     void *                 arg);
+                                     
     // member variables
     static PLDHashTableOps ops;
     PLDHashTable           table;