apply low latency patch

Author: neophob

src/SerialImp.c

@@ -4065,10 +4065,11 @@ void report_serial_events( struct event_info_struct *eis )
 /*
 			report(".");
 */
-			usleep(20000);
+			//low latency patch here, sleep was 20000
+			usleep(1000);
 #if !defined(__sun__)
 	/* FIXME: No time to test on all OS's for production */
-			usleep(20000);
+			usleep(1000);
 #endif /* !__sun__ */
 			return;
 		}
@@ -4081,7 +4082,7 @@ void report_serial_events( struct event_info_struct *eis )
 #if !defined(__sun__)
 #endif /* !__sun__ */
 		}
-		usleep(20000);
+		usleep(1000);
 	}
 }
 
@@ -4292,7 +4293,7 @@ RXTXVersion.nativeGetVersion
 JNIEXPORT jstring JNICALL RXTXVersion(nativeGetVersion) (JNIEnv *env,
 	jclass jclazz )
 {
-	return (*env)->NewStringUTF( env, "RXTX-2.2" );
+	return (*env)->NewStringUTF( env, "RXTX-2.2 http://PixelInvaders.ch low latency edition" );
 }
 
 /*----------------------------------------------------------

src/gnu/io/RXTXPort.java

@@ -892,7 +892,7 @@ protected void waitForTheNativeCodeSilly()
 		while( MonitorThreadLock )
 		{
 			try {
-				Thread.sleep(5);
+				Thread.sleep(1);
 			} catch( Exception e ) {}
 		}
 	}

src/gnu/io/RXTXVersion.java

@@ -76,7 +76,7 @@ public class RXTXVersion
 
 	static {
 		RXTXVersion.loadLibrary( "rxtxSerial" );
-		Version = "RXTX-2.2";
+		Version = "RXTX-2.2 http://PixelInvaders.ch low latency edition";
 	}
 	/**
 	*  static method to return the current version of RXTX

src/termios.c

@@ -3207,7 +3207,7 @@ int  serial_select( int  n,  fd_set  *readfds,  fd_set  *writefds,
 	}
 end:
 	/*  You may want to chop this out for lower latency */
-	usleep(1000);
+//	usleep(1000);
 	LEAVE( "serial_select" );
 	return( 1 );
 timeout: