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/*************************************************
*
* = PACKAGE
* ACE.OS
*
* = FILENAME
* ACE.java
*
*@author Prashant Jain
*
*************************************************/
package ACE.OS;
/**
* <hr>
* <h2>SYNOPSIS</h2>
* <blockquote>Constants, utility "functions", etc.</blockquote>
*
* <h2>DESCRIPTION</h2>
*<blockquote>
* Defines default constants for ACE. Many of these are used for the
* ACE tests and applications. You may want to change some of these to
* correspond to your environment. Also, routines for error handling,
* debugging and bit manipulation are included.
*</blockquote>
*
* <h2>NOTES</h2>
*<blockquote>
* This class is non-instantiable, and intended only to provide a constrained
* namespace.
*</blockquote>
*/
public abstract class ACE
{
/**
* Default port on which a server listens for connections.
*/
public static final int DEFAULT_SERVER_PORT = 10002;
/**
* Default name to use for a thread group.
*/
public static final String DEFAULT_THREAD_GROUP_NAME = "ace_thread_group";
/**
* Disable debugging. Once debugging is disabled, all ACE.DEBUG
* statements would be ignored.
*/
public static final void disableDebugging ()
{
ACE.debug_ = false;
}
/**
* Enable debugging. Once debugging is enabled, all ACE.DEBUG
* statements get printed.
*/
public static final void enableDebugging ()
{
ACE.debug_ = true;
}
/**
* Print the string representation of Java Exception.
*@param e Java exception
*/
public static final void ERROR (Exception e)
{
System.err.println (e);
}
/**
* Print the string being passed in.
*@param s a Java String
*/
public static final void ERROR (String s)
{
System.err.println (s);
}
/**
* Print the string being passed in.
*@param s A Java String
*@return Error value passed in
*/
public static final int ERROR_RETURN (String s, int errorVal)
{
System.err.println (s);
return errorVal;
}
/**
* Print the string being passed in. Note the behavior will vary
* depending upon whether debugging is enabled or disabled.
*@param s a Java String
*/
public static final void DEBUG (String s)
{
if (ACE.debug_)
System.out.println (s);
}
/**
* Flush out any data that may be buffered.
*/
public static final void FLUSH ()
{
System.out.flush ();
}
/**
* Set the bits of WORD using BITS as the mask.
*@param WORD the bits to be set.
*@param BITS the mask to use.
*@return The value obtained after setting the bits.
*/
public static final long SET_BITS (long WORD, long BITS)
{
return WORD | BITS;
}
/**
* Clear the bits of WORD using BITS as the mask.
*@param WORD the bits to clear.
*@param BITS the mask to use.
*@return The value obtained after clearing the bits.
*/
public static final long CLR_BITS (long WORD, long BITS)
{
return WORD & ~BITS;
}
/**
* Check if bits are enabled in WORD.
*@param WORD the bits to check.
*@param BIT the bit to check to see if it is enabled or not.
*@return true if bit is enabled, false otherwise.
*/
public static final boolean BIT_ENABLED (long WORD, long BIT)
{
return (WORD & BIT) != 0;
}
/**
* Check if bits are disabled in WORD.
*@param WORD the bits to check.
*@param BIT the bit to check to see if it is disabled or not.
*@return true if bit is disabled, false otherwise.
*/
public static final boolean BIT_DISABLED (long WORD, long BIT)
{
return (WORD & BIT) == 0;
}
// Debug flag (turn debugging on/off)
private static boolean debug_ = true;
// Default private constructor to avoid instantiation
private ACE ()
{
}
}
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