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

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

@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2002, 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;
+
+/**
+ * Represents a description of PooledConnection in Connections.
+ * Contains a PooledConnection, its state (busy, idle, expired), and idle time.
+ *
+ * Any access or update to a descriptor's state is synchronized.
+ *
+ * @author Rosanna Lee
+ */
+final class ConnectionDesc {
+    private final static boolean debug = Pool.debug;
+
+    // Package private because used by Pool.showStats()
+    static final byte BUSY = (byte)0;
+    static final byte IDLE = (byte)1;
+    static final byte EXPIRED = (byte)2;
+
+    final private PooledConnection conn;
+
+    private byte state = IDLE;  // initial state
+    private long idleSince;
+    private long useCount = 0;  // for stats & debugging only
+
+    ConnectionDesc(PooledConnection conn) {
+        this.conn = conn;
+    }
+
+    ConnectionDesc(PooledConnection conn, boolean use) {
+        this.conn = conn;
+        if (use) {
+            state = BUSY;
+            ++useCount;
+        }
+    }
+
+    /**
+     * Two desc are equal if their PooledConnections are the same.
+     * This is useful when searching for a ConnectionDesc using only its
+     * PooledConnection.
+     */
+    public boolean equals(Object obj) {
+        return obj != null
+            && obj instanceof ConnectionDesc
+            && ((ConnectionDesc)obj).conn == conn;
+    }
+
+    /**
+     * Hashcode is that of PooledConnection to facilitate
+     * searching for a ConnectionDesc using only its PooledConnection.
+     */
+    public int hashCode() {
+        return conn.hashCode();
+    }
+
+    /**
+     * Changes the state of a ConnectionDesc from BUSY to IDLE and
+     * records the current time so that we will know how long it has been idle.
+     * @return true if state change occurred.
+     */
+    synchronized boolean release() {
+        d("release()");
+        if (state == BUSY) {
+            state = IDLE;
+
+            idleSince = System.currentTimeMillis();
+            return true;  // Connection released, ready for reuse
+        } else {
+            return false; // Connection wasn't busy to begin with
+        }
+    }
+
+    /**
+     * If ConnectionDesc is IDLE, change its state to BUSY and return
+     * its connection.
+     *
+     * @return ConnectionDesc's PooledConnection if it was idle; null otherwise.
+     */
+    synchronized PooledConnection tryUse() {
+        d("tryUse()");
+
+        if (state == IDLE) {
+            state = BUSY;
+            ++useCount;
+            return conn;
+        }
+
+        return null;
+    }
+
+    /**
+     * If ConnectionDesc is IDLE and has expired, close the corresponding
+     * PooledConnection.
+     *
+     * @param threshold a connection that has been idle before this time
+     *     have expired.
+     *
+     * @return true if entry is idle and has expired; false otherwise.
+     */
+    synchronized boolean expire(long threshold) {
+        if (state == IDLE && idleSince < threshold) {
+
+            d("expire(): expired");
+
+            state = EXPIRED;
+            conn.closeConnection();  // Close real connection
+
+            return true;  // Expiration successful
+        } else {
+            d("expire(): not expired");
+            return false; // Expiration did not occur
+        }
+    }
+
+    public String toString() {
+        return conn.toString() + " " +
+            (state == BUSY ? "busy" : (state == IDLE ? "idle" : "expired"));
+    }
+
+    // Used by Pool.showStats()
+    int getState() {
+        return state;
+    }
+
+    // Used by Pool.showStats()
+    long getUseCount() {
+        return useCount;
+    }
+
+    private void d(String msg) {
+        if (debug) {
+            System.err.println("ConnectionDesc." + msg + " " + toString());
+        }
+    }
+}