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1: /* ThreadPolicyValue.java -- 2: Copyright (C) 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package org.omg.PortableServer; 40: 41: import org.omg.CORBA.BAD_OPERATION; 42: import org.omg.CORBA.portable.IDLEntity; 43: 44: import java.io.Serializable; 45: 46: /** 47: * Defines the possible values for the POA thread policy. 48: * 49: * This enumeration can obtain the following values: 50: * <ul> 51: * <li>ORB_CTRL_MODEL Each object in POA has a separate serving thread 52: * and a separate server socket, listening on the objects individual 53: * port. Additionally, when the request is accepted, it is also 54: * served in a separate thread, so several requests to the same 55: * object can be processed in parallel. The servant can always get 56: * the Id and POA of the object it is currently serving by 57: * invoking {@link Servant#_object_id()} and {@link Servant#_poa}. 58: * These two methods use thread to data map and must work correctly 59: * even then the servant code is executed in several parallel threads. 60: * </li> 61: * <li>SINGLE_THREAD_MODEL All objects in POA share the same server 62: * socket and are served in the same thread. This model is applicable 63: * when the number of objects is greater than the number of threads 64: * and (or) ports, supported by the system.</li> 65: * </ul> 66: * OMG also defines a MAIN_THREAD_MODEL, currently not supported by 67: * the java API. 68: * 69: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 70: */ 71: public class ThreadPolicyValue 72: implements Serializable, IDLEntity 73: { 74: /** 75: * Use serialVersionUID (v1.4) for interoperability. 76: */ 77: private static final long serialVersionUID = -8874988828297141512L; 78: 79: /** 80: * The value field for the current instance. 81: */ 82: private final int _value; 83: 84: /** 85: * The possible value of this enumeration (ORB_CTRL_MODEL). 86: */ 87: public static final int _ORB_CTRL_MODEL = 0; 88: 89: /** 90: * An instance of ThreadPolicyValue, initialized to ORB_CTRL_MODEL. 91: */ 92: public static final ThreadPolicyValue ORB_CTRL_MODEL = 93: new ThreadPolicyValue(_ORB_CTRL_MODEL); 94: 95: /** 96: * The possible value of this enumeration (SINGLE_THREAD_MODEL). 97: */ 98: public static final int _SINGLE_THREAD_MODEL = 1; 99: 100: /** 101: * An instance of ThreadPolicyValue, initialized to SINGLE_THREAD_MODEL. 102: */ 103: public static final ThreadPolicyValue SINGLE_THREAD_MODEL = 104: new ThreadPolicyValue(_SINGLE_THREAD_MODEL); 105: 106: /** 107: * The private array that maps integer codes to the enumeration 108: * values. 109: */ 110: private static final ThreadPolicyValue[] enume = 111: new ThreadPolicyValue[] { ORB_CTRL_MODEL, SINGLE_THREAD_MODEL }; 112: 113: /** 114: * The private array of state names. 115: */ 116: private static final String[] state_names = 117: new String[] { "ORB_CTRL_MODEL", "SINGLE_THREAD_MODEL" }; 118: 119: /** 120: * Normally, no new instances are required, so the constructor is protected. 121: */ 122: protected ThreadPolicyValue(int a_value) 123: { 124: _value = a_value; 125: } 126: 127: /** 128: * Returns the ThreadPolicyValue, matching the given integer constant. 129: * 130: * @param code one of _ORB_CTRL_MODEL, _SINGLE_THREAD_MODEL. 131: * @return one of ORB_CTRL_MODEL, SINGLE_THREAD_MODEL. 132: * @throws BAD_PARAM if the parameter is not one of the valid values. 133: */ 134: public static ThreadPolicyValue from_int(int code) 135: { 136: try 137: { 138: return enume [ code ]; 139: } 140: catch (ArrayIndexOutOfBoundsException ex) 141: { 142: throw new BAD_OPERATION("Invalid enumeration code " + code); 143: } 144: } 145: 146: /** 147: * Returns a short string representation. 148: * @return the name of the current enumeration value. 149: */ 150: public String toString() 151: { 152: return state_names [ _value ]; 153: } 154: 155: /** 156: * Returns the integer code of the enumeration value. 157: * @return one of ORB_CTRL_MODEL, SINGLE_THREAD_MODEL. 158: */ 159: public int value() 160: { 161: return _value; 162: }
GNU Classpath (0.18) |