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<== Date ==> <== Thread ==>
Subject: Thread model for EPICS on ARM CPU
From: Rod Nussbaumer <[email protected]>
To: epics Techtalk <[email protected]>
Date: Tue, 06 Jul 2010 12:04:01 -0700
Hi all.

I'm trying to get EPICS running on an ARM CPU. So far I've got a build of EPICS (3.14.10 & 3.14.11) against a glibc 2.3.6 and Linux 2.6.21, where the only thread model supported is linuxthreads (not POSIX/nptl). When I run an IOC, the iocShell crashes (segfault), although the rest of the IOC (asyn device support), and record processing seem to stay running. Is this a reason to suspect the tread model?
I see in the EPICS build commandline, the switch '-D_POSIX_THREADS'. Does this mean a strict POSIX thread model is required?

The iocShell crashes right after iocInit. Running under gdb, I set a breakpoint on iocInit. I see:


(gdb) step
Single stepping until exit from function iocshBody,
which has no line number information.
epics>
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 114696 (LWP 4439)]
0x0006be60 in ca_flush_io ()

Thanks for reading.

Rod Nussbaumer
ISAC Controls, TRIUMF
Vancouver, Canada
Replies:
Re: Thread model for EPICS on ARM CPU Eric Norum
RE: Thread model for EPICS on ARM CPU Hinko Kocevar
Re: Thread model for EPICS on ARM CPU Michael Abbott
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