/*
*
*
* Copyright 1990-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program 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.
*
* This program 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 at /legal/license.txt).
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package java.lang;
/**
* Every Java application has a single instance of class
* <code>Runtime</code> that allows the application to interface with
* the environment in which the application is running. The current
* runtime can be obtained from the <code>getRuntime</code> method.
* <p>
* An application cannot create its own instance of this class.
*
* @version 12/17/01 (CLDC 1.1)
* @see java.lang.Runtime#getRuntime()
* @since JDK1.0, CLDC 1.0
*/
public class Runtime {
private static Runtime currentRuntime = new Runtime();
/**
* Returns the runtime object associated with the current Java application.
* Most of the methods of class <code>Runtime</code> are instance
* methods and must be invoked with respect to the current runtime object.
*
* @return the <code>Runtime</code> object associated with the current
* Java application.
*/
public static Runtime getRuntime() {
return currentRuntime;
}
/** Don't let anyone else instantiate this class */
private Runtime() {}
/* Helper for exit
*/
// private native void exitInternal(int status);
/**
* Terminates the currently running Java application. This
* method never returns normally.
* <p>
* The argument serves as a status code; by convention, a nonzero
* status code indicates abnormal termination.
*
* @param status exit status.
* @since JDK1.0
*/
// public void exit(int status) {
// exitInternal(status);
// }
public void exit(int status)
{
com.jopdesign.sys.Startup.exit();
}
/**
* Returns the amount of free memory in the system. Calling the
* <code>gc</code> method may result in increasing the value returned
* by <code>freeMemory.</code>
*
* @return an approximation to the total amount of memory currently
* available for future allocated objects, measured in bytes.
*/
// public native long freeMemory();
public long freeMemory()
{
return com.jopdesign.sys.GC.freeMemory();
}
/**
* Returns the total amount of memory in the Java Virtual Machine.
* The value returned by this method may vary over time, depending on
* the host environment.
* <p>
* Note that the amount of memory required to hold an object of any
* given type may be implementation-dependent.
*
* @return the total amount of memory currently available for current
* and future objects, measured in bytes.
*/
// public native long totalMemory();
public long totalMemory()
{
return com.jopdesign.sys.GC.totalMemory();
}
/**
* Runs the garbage collector.
* Calling this method suggests that the Java Virtual Machine expend
* effort toward recycling unused objects in order to make the memory
* they currently occupy available for quick reuse. When control
* returns from the method call, the Java Virtual Machine has made
* its best effort to recycle all discarded objects.
* <p>
* The name <code>gc</code> stands for "garbage
* collector". The Java Virtual Machine performs this recycling
* process automatically as needed even if the
* <code>gc</code> method is not invoked explicitly.
* <p>
* The method {@link System#gc()} is the conventional and convenient
* means of invoking this method.
*/
// public native void gc();
public void gc()
{
System.gc();
}
}