org.eclipse.linuxtools.lttng.jni/src/org/eclipse/linuxtools/lttng/jni/common/Jni_C_Constant.java

   1 package org.eclipse.linuxtools.lttng.jni.common;
   2 /*******************************************************************************
   3  * Copyright (c) 2009 Ericsson
   4  *
   5  * All rights reserved. This program and the accompanying materials are
   6  * made available under the terms of the Eclipse Public License v1.0 which
   7  * accompanies this distribution, and is available at
   8  * http://www.eclipse.org/legal/epl-v10.html
   9  *
  10  * Contributors:
  11  *   William Bourque (wbourque@gmail.com) - Initial API and implementation
  12  *******************************************************************************/
  13
  14 /**
  15  * <b><u>Jni_C_Common</u></b>
  16  * <p>
  17  * Common constants and methods that should be shared between JNI objects.<p>
  18  *
  19  * This class is abstract and is intended to be extended by LTTng modules that need the constants.
  20  */
  21 public abstract class Jni_C_Constant {
  22
  23     // Needed for native types
  24     public static final int NULL = 0;
  25
  26     // C errno correspondance. Used to interpret LTT return value
  27     public static final int EOK    =  0;
  28     public static final int EPERM  =  1;
  29     public static final int ERANGE = 34;
  30
  31     // Timestamps are in nanoseconds, this const ease up the math
  32     public static final long NANO = 1000000000;
  33
  34     /**
  35      * Default constructor
  36      */
  37     public Jni_C_Constant() {
  38     }
  39
  40     /**
  41      * "Alternate" .toString()<p>
  42      *
  43      * Simulates the way Java Object implements "toString()"
  44      *
  45      * @return The Java hashed UID of the object (i.e. : NAME@HASH)
  46      */
  47     @SuppressWarnings("nls")
  48     public String getReferenceToString() {
  49         return this.getClass().getName() + "@" + Integer.toHexString(this.hashCode());
  50     }
  51 }