EPICS Base

explain EPICS exit issues in CA ref manual

Bug #541192 reported by Jeff Hill
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
EPICS Base
Fix Released
Wishlist
Andrew Johnson
EPICS Base 3.14.10

Bug Description

A CA client application that calls epicsExit *must* install an EPICS exit handler that calls ca_context_destroy only *after* calling ca_create_context(). This will guarantee that the EPICS exit handlers get called in the correct order. Perhaps on vxWorks (and on RTEMS)the soft reboot issues may be compelling. A CA client application that runs on these OS may need to have an EPICS exit handler that call ca_context_destroy().

Additional information:
Somewhat related to #161

Original Mantis Bug: mantis-127
    http://www.aps.anl.gov/epics/mantis/view_bug_page.php?f_id=127

Tags: ca 3.14
Revision history for this message
Jeff Hill (johill-lanl) wrote :

A program running in an IOC context must delete all of its channels prior to calling ca_context_destroy. Otherwise, database scan tasks will continue to post monitors into a non-existent event queue. That will cause a crash.

Revision history for this message
Andrew Johnson (anj) wrote :

Fixed for R3.14.10.

Revision history for this message
Andrew Johnson (anj) wrote :

R3.14.10 released.

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