[xmlvm-users] Exception occurs when an alternate thread finishes

[Steven A. <ste...@gm...>]

Hi,

 I am getting an error when my a function in another thread finishes. Here is the message that appears in the log window.

 2011-07-01 11:29:40.230 ThreadingTest[12323:7703] *** Terminating app due to uncaught exception 'MyIllegalMonitorStateException', reason: '(null)'
 *** Call stack at first throw:
 (
 0 CoreFoundation 0x019995a9 __exceptionPreprocess + 185
 1 libobjc.A.dylib 0x01aed313 objc_exception_throw + 44
 2 TetradProductList 0x0002a31e -[NSObject(cat_MyObject) checkSynchronized] + 301
 3 TetradProductList 0x0002b034 -[NSObject(cat_MyObject) notifyAllx] + 37
 4 TetradProductList 0x0002e119 -[MyThread threadCallback:] + 262
 5 Foundation 0x000f4cf4 -[NSThread main] + 81
 6 Foundation 0x000f4c80 __NSThread__main__ + 1387
 7 libSystem.B.dylib 0x983c4819 _pthread_start + 345
 8 libSystem.B.dylib 0x983c469e thread_start + 34
 )
 terminate called after throwing an instance of 'MyIllegalMonitorStateException'


 I recall a previous post where Paul said he had done some work on some of the threading functions (sleep(), wait() etc.)
 Is there anything I should be doing at the end of the function to remove the thread?


 @Override
 public void viewDidLoad() {
 super.viewDidLoad();
 ShowSynchronizeAlert();
 }

 public void ShowSynchronizeAlert(){

 try
 {
 UIAlertView av = new UIAlertView("Attention", "Do you want to synchronize?",
 new UIAlertViewDelegate() {

 @Override
 public void clickedButtonAtIndex(UIAlertView uiav, int i) {
 switch(i)
 {
 case 0:
 try
 {
 Thread t = new Thread(new Runnable() {
 public void run() {
 try
 {
 Synchronize();
 }
 catch(Exception e)
 {
 Logging.Error(e);
 }
 }
 });
 t.start();
 }
 catch(Exception e)
 {
 Logging.Error(e);
 }
 break;
 case 1:
 // Do nothing
 break;
 }
 }
 }, "OK");
 av.addButtonWithTitle("No");
 av.show();
 }
 catch(Exception e)
 {
 Logging.Error(e);
 }
 }