How to set a breakpoint on _NSLockError ()

Question

I am trying to debug multiple threads.

 *** -[NSLock lock]: deadlock (<NSLock: 0xc388ab0> '(null)')
 *** Break on _NSLockError() to debug.

How can I debug this?

+2

Sheehan alam Apr 28 10 at 18:10

1 answer

kennytm · Accepted Answer · 2010-04-28T18:32:17+0000

If you are using the Xcode debugger (which uses gdb under the hood), pause the application and in the console enter:

b _NSLockError

The debugger will then stop the application when _NSLockError occurs, and you can check the backtrace.