feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/com/sun/jndi/ldap/pool/ConnectionsWeakRef.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2003, 2011, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.jndi.ldap.pool;
+
+import java.lang.ref.WeakReference;
+import java.lang.ref.ReferenceQueue;
+
+/*
+ * This class defines a WeakReference to the ConnectionRef (the referent).
+ *
+ * The ConnectionRef enables to break the reference
+ * cycle between Connection, LdapClient, Connections and ConnectionDesc,
+ * shown in the figure below.
+ *
+ *        -------> Connections -----> ConnectionDesc
+ *        |              ^                  |
+ *        |              |                  |
+ *        |              |                  |
+ * ConnectionsRef    LdapClient <------------
+ *        ^              |   ^
+ *        :              |   |
+ *        :              v   |
+ * ConnectionsWeakRef  Connection
+ *
+ * The ConnectionsRef is for cleaning up the resources held by the
+ * Connection thread by making them available to the GC. The pool
+ * uses ConnectionRef to hold the pooled resources.
+ *
+ * This class in turn holds a WeakReference with a ReferenceQueue to the
+ * ConnectionRef to track when the ConnectionRef becomes ready
+ * for getting GC'ed. It extends from WeakReference in order to hold a
+ * reference to Connections used for closing (which in turn terminates
+ * the Connection thread) it by monitoring the ReferenceQueue.
+ */
+class ConnectionsWeakRef extends WeakReference<ConnectionsRef> {
+
+    private final Connections conns;
+
+    ConnectionsWeakRef (ConnectionsRef connsRef,
+                        ReferenceQueue<? super ConnectionsRef> queue) {
+        super(connsRef, queue);
+        this.conns = connsRef.getConnections();
+    }
+
+    Connections getConnections() {
+        return conns;
+    }
+}