001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: *
023: * Free Software Foundation, Inc.
024: * 59 Temple Place, Suite 330
025: * Boston, MA 02111-1307 USA
026: *
027: * @author Scott Ferguson
028: */
029:
030: package com.caucho.iiop.orb;
031:
032: import com.caucho.util.*;
033: import com.caucho.vfs.*;
034:
035: import java.util.*;
036: import java.util.logging.Logger;
037: import java.io.IOException;
038:
039: public class IiopSocketPool {
040: private String _host;
041: private int _port;
042:
043: private Path _path;
044:
045: private ReadWritePair _pair;
046: private long _lastFreeTime;
047:
048: private long _maxIdleTime = 10000L;
049:
050: public IiopSocketPool(String host, int port) {
051: _host = host;
052: _port = port;
053: HashMap<String, Object> props = new HashMap<String, Object>();
054: props.put("timeout", new Long(600000));
055: _path = Vfs.lookup("tcp://" + host + ":" + port, props);
056: }
057:
058: public ReadWritePair open() throws IOException {
059: synchronized (this ) {
060: long now = Alarm.getCurrentTime();
061:
062: ReadWritePair pair = _pair;
063: _pair = null;
064:
065: if (pair != null && now < _lastFreeTime + _maxIdleTime) {
066: return pair;
067: } else if (pair != null) {
068: closePair(pair);
069: }
070: }
071:
072: return _path.openReadWrite();
073: }
074:
075: public void free(ReadWritePair pair) {
076: ReadWritePair closePair = null;
077:
078: synchronized (this ) {
079: closePair = _pair;
080: _pair = pair;
081:
082: _lastFreeTime = Alarm.getCurrentTime();
083: }
084:
085: if (closePair != null)
086: closePair(closePair);
087: }
088:
089: private static void closePair(ReadWritePair pair) {
090: pair.getReadStream().close();
091:
092: try {
093: pair.getWriteStream().close();
094: } catch (IOException e) {
095: }
096: }
097:
098: public String toString() {
099: return "IiopSocketPool[" + _host + ", " + _port + "]";
100: }
101: }
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