Experimental Physics and Industrial Control System
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On Aug 31, 2006, at 5:37 PM, Eric Bjorklund wrote:
Greetings all.
A number of my drivers (and others as well) call the vxWorks
routine "rebootHookAdd" -- mostly to install rundown routines that
will disable the card's interrupts in the event of a soft reboot.
Since I seem to be into portability these days, it would be nice to
have an OSI equivalent function.
epicsAtExit seems to be the logical candidate, and there is even a
hook in the vxWorks part of libCom/osi/os (atReboot.cpp) that will
invoke epicsExitCallAtExits() during a soft reboot. The catch,
however, is that you need to have (as I understand it) a routine
called "sysAtReboot" built into your BSP for the exit handler to be
called on a soft reboot. sysAtReboot (again, as I understand it)
is an APS BSP extension that solves the problem of rebootHooks not
invoking its exit handlers in the correct order.
So, with the above history out of the way (and feel free to comment
on the authenticity of the above), my (perhaps) naive questions are:
1. How does RTEMS solve the soft reboot handler problem (I don't
see any similar hook in libCom/osi/os/RTEMS)?
The RTEMS EPICS startup code calls epicsExit when the interactive
iocsh completes and the call to main() returns. Have a look at the
last few lines of src/RTEMS/base/rtems_init.c.
--
Eric Norum <[email protected]>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793
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ANJ, 02 Sep 2010 |
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