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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | + | |
| 27 | +/* | |
| 28 | + * The Original Code is HAT. The Initial Developer of the | |
| 29 | + * Original Code is Bill Foote, with contributions from others | |
| 30 | + * at JavaSoft/Sun. | |
| 31 | + */ | |
| 32 | + | |
| 33 | +package com.sun.tools.hat.internal.server; | |
| 34 | + | |
| 35 | +/** | |
| 36 | + * | |
| 37 | + * @author Bill Foote | |
| 38 | + */ | |
| 39 | + | |
| 40 | + | |
| 41 | +import java.net.Socket; | |
| 42 | +import java.net.ServerSocket; | |
| 43 | +import java.net.InetAddress; | |
| 44 | + | |
| 45 | +import java.io.InputStream; | |
| 46 | +import java.io.BufferedInputStream; | |
| 47 | +import java.io.IOException; | |
| 48 | +import java.io.Writer; | |
| 49 | +import java.io.BufferedWriter; | |
| 50 | +import java.io.PrintWriter; | |
| 51 | +import java.io.OutputStream; | |
| 52 | +import java.io.OutputStreamWriter; | |
| 53 | +import java.io.BufferedOutputStream; | |
| 54 | + | |
| 55 | +import com.sun.tools.hat.internal.model.Snapshot; | |
| 56 | +import com.sun.tools.hat.internal.oql.OQLEngine; | |
| 57 | + | |
| 58 | +public class QueryListener implements Runnable { | |
| 59 | + | |
| 60 | + | |
| 61 | + private Snapshot snapshot; | |
| 62 | + private OQLEngine engine; | |
| 63 | + private int port; | |
| 64 | + | |
| 65 | + public QueryListener(int port) { | |
| 66 | + this.port = port; | |
| 67 | + this.snapshot = null; // Client will setModel when it's ready | |
| 68 | + this.engine = null; // created when snapshot is set | |
| 69 | + } | |
| 70 | + | |
| 71 | + public void setModel(Snapshot ss) { | |
| 72 | + this.snapshot = ss; | |
| 73 | + if (OQLEngine.isOQLSupported()) { | |
| 74 | + this.engine = new OQLEngine(ss); | |
| 75 | + } | |
| 76 | + } | |
| 77 | + | |
| 78 | + public void run() { | |
| 79 | + try { | |
| 80 | + waitForRequests(); | |
| 81 | + } catch (IOException ex) { | |
| 82 | + ex.printStackTrace(); | |
| 83 | + System.exit(1); | |
| 84 | + } | |
| 85 | + } | |
| 86 | + | |
| 87 | + private void waitForRequests() throws IOException { | |
| 88 | + ServerSocket ss = new ServerSocket(port); | |
| 89 | + Thread last = null; | |
| 90 | + for (;;) { | |
| 91 | + Socket s = ss.accept(); | |
| 92 | + Thread t = new Thread(new HttpReader(s, snapshot, engine)); | |
| 93 | + if (snapshot == null) { | |
| 94 | + t.setPriority(Thread.NORM_PRIORITY+1); | |
| 95 | + } else { | |
| 96 | + t.setPriority(Thread.NORM_PRIORITY-1); | |
| 97 | + if (last != null) { | |
| 98 | + try { | |
| 99 | + last.setPriority(Thread.NORM_PRIORITY-2); | |
| 100 | + } catch (Throwable ignored) { | |
| 101 | + } | |
| 102 | + // If the thread is no longer alive, we'll get a | |
| 103 | + // NullPointerException | |
| 104 | + } | |
| 105 | + } | |
| 106 | + t.start(); | |
| 107 | + last = t; | |
| 108 | + } | |
| 109 | + } | |
| 110 | + | |
| 111 | +} | |