Experimental Physics and
Industrial Control System

Dirk Zimoch <[email protected]> · Wed, 14 Sep 2011 15:00:53 +0200

Hi all,

I have put the new version 2.5 on our web site

http://epics.web.psi.ch/software/streamdevice/

This version fixes the bugs Ralph had found (and some more similar

problems with 64 bit machines). However it still shows different

behavior on 64 bit machine when negative DBF_LONG values (e.g. ao.RVAL)

are printed with unsigned int formats like %x. The values are then sign

extended to 64 bits. Is this a bug?

It also fixes a bug which can hang up a record in PACT=1 state. Dehong

had reported such a problem.

I have tested this version against asyn 4-8, 4-16 and 4-17 and base

3.13.10, 3.14.8 and 3.14.12 on vxWorks and Linux.

There are some new features compared to version 2.4:

* in "%?..."; with any format converter returns 0/0.0/"" when the input

does not match.

* in "%=..."; with any format allows matching variable values. It does

an _output_ conversion and then matches input against the resulting string.

* "%{...}" now allows value assignment when used with # flag:
"%#{string1=3|string2=-2|string4=0}"

* exec command can have formats:
exec "dbpr %(NAME)s,%i > %(NAME)s.txt";

* redirection %(record)... is equivalent to %(record.VAL)...

* in "\_"; matches any amount of whitespace (incl. none)

* in "%#..."; allows spaces inside strings (%#s) and between sign and

number in inputs (%#f %#d %#i ...)

* in "%-o %-x"; allows reading signed octal or hex values.

* "%T(format)" converts from and to timestamps. Seconds past 1970 or

EPICS time stamps when redirected to TIME filed: %(TIME)T(format)

Please test and report bugs.
Dirk

Ralph Lange wrote:

Hi Dirk,

I discovered two bugs in current StreamDevice.

1. (trivial): StreamBuffer uses the wrong operator delete for arrays.
2. (major): On 64bit archs, the waveform device support corrupts IOC
memory when the record's FTVL is LONG or ULONG, leading to IOC crashes
(segfaults).

Patches are enclosed, the IOC is running happily ever after.

Cheers,
~Ralph

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System