Experimental Physics and Industrial Control System
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Subject: |
Problems with database breakpoint routines. |
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From: |
"Rees, NP \(Nick\)" <[email protected]> |
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To: |
"EPICS tech-talk" <[email protected]> |
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Date: |
Thu, 14 Dec 2006 11:49:16 -0000 |
I have just tried to use the database breakpoint routines (i.e. using
the code in the file dbBkpt.c). The documentation isn't clear on this,
but much of the library initialization takes place in the dbb routine,
including the all important creation of the bkpt_stack_sem semaphore.
The first thing some of the other routines in the library (dbc, dbs) do
is a epicsMutexMustLock on bkpt_stack_sem, with a consequence that (on
linux) the IOC SEGV's all over the place. Not what is intended.
Either the initialization should be moved to iocInit, or a check should
be done for a NULL pointer semaphore, or both. I would implement it if
someone tells me exactly what is the best thing to do, but maybe the
person who knows what to do should do it...
Cheers,
Nick Rees
Principal Software Engineer Phone: +44 (0)1235-778430
Diamond Light Source Fax: +44 (0)1235-446713
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