Bug 668013 - Add nsHTMLStyleSheet::SizeOf(). r=bz

layout/style/nsHTMLStyleSheet.cpp

@@ -528,6 +528,43 @@ nsHTMLStyleSheet::List(FILE* out, PRInt32 aIndent) const
 }
 #endif
 
+static
+PLDHashOperator
+GetHashEntryAttributesSize(PLDHashTable* aTable, PLDHashEntryHdr* aEntry,
+                           PRUint32 number, void* aArg)
+{
+  NS_PRECONDITION(aEntry, "The entry should not be null!");
+  NS_PRECONDITION(aArg, "The passed argument should not be null!");
+
+  MappedAttrTableEntry* entry = static_cast<MappedAttrTableEntry*>(aEntry);
+  PRInt64 size = *static_cast<PRInt64*>(aArg);
+
+  NS_ASSERTION(entry->mAttributes, "entry->mAttributes should not be null!");
+  size += sizeof(*entry->mAttributes);
+
+  return PL_DHASH_NEXT;
+}
+
+PRInt64
+nsHTMLStyleSheet::SizeOf() const
+{
+  PRInt64 size = sizeof(*this);
+
+  size += mLinkRule ? sizeof(*mLinkRule.get()) : 0;
+  size += mVisitedRule ? sizeof(*mVisitedRule.get()) : 0;
+  size += mActiveRule ? sizeof(*mActiveRule.get()) : 0;
+  size += mTableQuirkColorRule ? sizeof(*mTableQuirkColorRule.get()) : 0;
+  size += mTableTHRule ? sizeof(*mTableTHRule.get()) : 0;
+
+  if (mMappedAttrTable.ops) {
+    size += PL_DHASH_TABLE_SIZE(&mMappedAttrTable) * sizeof(MappedAttrTableEntry);
+    PL_DHashTableEnumerate(const_cast<PLDHashTable*>(&mMappedAttrTable),
+                           GetHashEntryAttributesSize, &size);
+  }
+
+  return size;
+}
+
 // XXX For convenience and backwards compatibility
 nsresult
 NS_NewHTMLStyleSheet(nsHTMLStyleSheet** aInstancePtrResult, nsIURI* aURL, 
@@ -567,3 +604,4 @@ NS_NewHTMLStyleSheet(nsHTMLStyleSheet** aInstancePtrResult)
   *aInstancePtrResult = it; // NS_ADDREF above, or set to null by NS_RELEASE
   return rv;
 }
+