[Rxtx] port in use exception

[Andre-John Mas]

Hi,

Wasn't this sorted in the trunk build, which is to be released as
rxtx-2.0-8? If remember rightly it was to do with the fact the
MacOS X used IOKit instead of lock files. Also the folder that
lock files would be stored in on MacOS X doesn't exist by default,
so confusing the RXTX.

Andre

> 
> From: Trent Jarvi <tjarvi at qbang.org>
> Date: 2006/09/25 Mon AM 02:14:35 EDT
> To: RXTX Developers and Users <rxtx at qbang.org>
> Subject: Re: [Rxtx] port in use exception
> 
> On Sun, 24 Sep 2006, Dr. Douglas Lyon wrote:
> 
> > Hi All,
> > For the longest time, I was using RXTX to dial the phone.
> > Recently, I switched to the PortIO device (USB to Serial converter).
> >
> > If I quit from the application and restart, I get an exception, as seen
> > below, on the Mac. However, trying again seems to work fine.
> > As long as the application remains open, everything works well.
> >
> > I do close the port when I am done.
> > Hmm. I am using a odd-ball version of RXTX, as you can see.
> > This could be the culprit. Any ideas?
> > Thanks!
> >  - Doug
> >
> > Native lib Version = R-testing-XTX-2.1-7pre20noLock
> > Java lib Version   = R-testing-XTX-2.1-7pre20noLock
> > trying to open:/dev/tty.usbserial
> > gnu.io.PortInUseException: Unknown Application
> > 	at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:335)
> > 	at serialPort.Utils.init(Utils.java:62)
> > 	at serialPort.Utils.<init>(Utils.java:37)
> > 	at serialPort.Utils.getSerialPortUtils(Utils.java:101)
> > 	at gui.touchtone.DialUtils.doModemDial(DialUtils.java:70)
> > 	at addbk.JAddressBook.ViewPanel.dial(ViewPanel.java:141)
> > 	at addbk.JAddressBook.ViewPanel.access$300(ViewPanel.java:20)
> > 	at addbk.JAddressBook.ViewPanel$11.run(ViewPanel.java:127)
> > 	at gui.run.RunButton.actionPerformed(RunButton.java:45)
> > 	at
> > javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1882)
> > 	at
> > javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2202)
> > 	at
> > javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
> > 	at
> > javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
> > 	at
> > javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
> > 	at
> > java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
> > 	at java.awt.Component.processMouseEvent(Component.java:5554)
> > 	at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
> > 	at java.awt.Component.processEvent(Component.java:5319)
> > 	at java.awt.Container.processEvent(Container.java:2010)
> > 	at java.awt.Component.dispatchEventImpl(Component.java:4021)
> > 	at java.awt.Container.dispatchEventImpl(Container.java:2068)
> > 	at java.awt.Component.dispatchEvent(Component.java:3869)
> > 	at
> > java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4256)
> > 	at
> > java.awt.LightweightDispatcher.processMouseEvent(Container.java:3936)
> > 	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3866)
> > 	at java.awt.Container.dispatchEventImpl(Container.java:2054)
> > 	at java.awt.Window.dispatchEventImpl(Window.java:1774)
> > 	at java.awt.Component.dispatchEvent(Component.java:3869)
> > 	at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
> > 	at
> > java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
> > 	at
> > java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
> > 	at
> > java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
> > 	at
> > java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
> > 	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
> 
> 
> hehe.. I remember making that oddball version for you :)  Its not very 
> different from like releases at the time.
> 
> Perhaps you are trying to open the port before the kernel is ready?  Are 
> you opening right after closing?  The more recent versions of rxtx may 
> close the port faster which could make a difference depending how you are 
> using threads.
> 
> --
> Trent Jarvi
> tjarvi at qbang.org
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