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--- src/gnu/io/CommPortEnumerator.java.orig 2007-04-26 05:26:05 UTC
+++ src/gnu/io/CommPortEnumerator.java
@@ -69,50 +69,79 @@ import java.util.Enumeration;
class CommPortEnumerator implements Enumeration
{
private CommPortIdentifier index;
- private final static boolean debug = false;
+ private final static boolean debug = "true".equals( System.getProperty( "gnu.io.rxtx.DEBUG" ) );
static
{
- if (debug)
- System.out.println("CommPortEnumerator:{}");
+ if (debug) System.out.println("CommPortEnumerator:Static{}");
}
CommPortEnumerator()
{
}
-/*------------------------------------------------------------------------------
- nextElement()
- accept:
- perform:
- return:
- exceptions:
- comments:
-------------------------------------------------------------------------------*/
+
public Object nextElement()
{
- if(debug) System.out.println("CommPortEnumerator:nextElement()");
+ if (debug) System.out.println("CommPortEnumerator:nextElement()");
+
synchronized (CommPortIdentifier.Sync)
{
- if(index != null) index = index.next;
- else index=CommPortIdentifier.CommPortIndex;
+ if(index != null)
+ {
+ index = index.next;
+ }
+ else
+ {
+ index=CommPortIdentifier.CommPortIndex;
+ }
+ if (debug) System.out.println(" CommPortEnumerator:nextElement(" + index + ")");
return(index);
}
}
-/*------------------------------------------------------------------------------
- hasMoreElements()
- accept:
- perform:
- return:
- exceptions:
- comments:
-------------------------------------------------------------------------------*/
+
public boolean hasMoreElements()
{
- if(debug) System.out.println("CommPortEnumerator:hasMoreElements() " + CommPortIdentifier.CommPortIndex == null ? false : true );
+ if (debug) System.out.println("CommPortEnumerator:hasMoreElements()");
+
+ if (CommPortIdentifier.CommPortIndex == null)
+ {
+ if (debug) System.out.println(" ComPortIndex is null...");
+ }
+ else
+ {
+ if (debug) System.out.println(" ComPortIndex is not null...");
+ }
+
synchronized (CommPortIdentifier.Sync)
{
- if(index != null) return index.next == null ? false : true;
- else return CommPortIdentifier.CommPortIndex == null ?
- false : true;
+ if (debug) System.out.println(" Syncronised");
+ if(index != null)
+ {
+ if (debug) System.out.println(" Valid index");
+ if (index.next == null)
+ {
+ if (debug) System.out.println("CommPortEnumerator:hasMoreElements: Exit(Next index is null - false)");
+ return false;
+ }
+ else
+ {
+ if (debug) System.out.println("CommPortEnumerator:hasMoreElements: Exit(Next index is not null - true)");
+ return true;
+ }
+ }
+ else
+ {
+ if (debug) System.out.println(" Index is not valid");
+ if (CommPortIdentifier.CommPortIndex == null)
+ {
+ if (debug) System.out.println("CommPortEnumerator:hasMoreElements: Exit(CommPortIdentifier.CommPortIndex is null - false)");
+ return false;
+ }
+ else
+ {
+ if (debug) System.out.println("CommPortEnumerator:hasMoreElements: Exit(CommPortIdentifier.CommPortIndex is not null - true)");
+ return true;
+ }
+ }
}
}
}
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