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[feisty_meow.git] / kona / src / org / gffs / cache / TimeoutList.java

diff --git a/kona/src/org/gffs/cache/TimeoutList.java b/kona/src/org/gffs/cache/TimeoutList.java
new file mode 100644 (file)
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+++ b/kona/src/org/gffs/cache/TimeoutList.java
@@ -0,0 +1,56 @@
+package org.gffs.cache;
+
+/*
+ * Copyright 2006 University of Virginia
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may
+ * obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
+ * and limitations under the License.
+ */
+
+class TimeoutList<KeyType, DataType> extends CacheList<KeyType, DataType>
+{
+       public TimeoutList()
+       {
+               super(RoleBasedCacheNode.ROLE_TIMEOUT);
+       }
+
+       @Override
+       public void insert(RoleBasedCacheNode<KeyType, DataType> node)
+       {
+               // We'll start at the end because most likely we're adding to the end
+               if (_tail == null) {
+                       // The list is empty
+                       _head = _tail = node;
+                       return;
+               }
+
+               RoleBasedCacheNode<KeyType, DataType> tmp;
+               for (tmp = _tail; tmp != null; tmp = tmp.getPrevious(_myRole)) {
+                       if (tmp.getInvalidationDate().compareTo(node.getInvalidationDate()) <= 0) {
+                               // current node invalidates before me, so I should go after him
+                               node.setPrevious(_myRole, tmp);
+                               node.setNext(_myRole, tmp.getNext(_myRole));
+                               tmp.setNext(_myRole, node);
+                               if (node.getNext(_myRole) == null) {
+                                       // Adding to the tail
+                                       _tail = node;
+                               } else {
+                                       node.getNext(_myRole).setPrevious(_myRole, node);
+                               }
+
+                               return;
+                       }
+               }
+
+               // We add to the head of the list
+               node.setNext(_myRole, _head);
+               _head.setPrevious(_myRole, node);
+               _head = node;
+       }
+}
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