8300184: Optimize ResourceHashtableBase::iterate_all using _number_of_entries

Reviewed-by: dholmes, rehn

Author: Xin Liu

src/hotspot/share/utilities/resourceHash.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -228,12 +228,15 @@ class ResourceHashtableBase : public STORAGE {
   void iterate(Function function) const { // lambda enabled API
     Node* const* bucket = table();
     const unsigned sz = table_size();
-    while (bucket < bucket_at(sz)) {
+    int cnt = _number_of_entries;
+
+    while (cnt > 0 && bucket < bucket_at(sz)) {
       Node* node = *bucket;
       while (node != NULL) {
         bool cont = function(node->_key, node->_value);
         if (!cont) { return; }
         node = node->_next;
+        --cnt;
       }
       ++bucket;
     }