[Info-vax] Ken Coar's OpenVMS Lock utility sources are available on Sourceforge.

[Simon Clubley]

On 2020-11-06, Dave Froble <davef at tsoft-inc.com> wrote:
> On 11/6/2020 5:21 AM, Jon Pinkley wrote:
>> On Friday, November 6, 2020 at 12:34:30 AM UTC-5, Dave Froble wrote:
>>> On 11/6/2020 12:32 AM, Jon Pinkley wrote:
>>>> On Thursday, November 5, 2020 at 3:03:03 AM UTC-5, Jon Pinkley wrote:
>>>>> In 1998, Ken Coar submitted the LOCK utility to the DECUS VAXSIG tape.
>>>>
>>>> That was a typo.  It was on the VAX86C and VAX87A tapes.  1998 is when I built the version I am running now.
>>>>
>>>
>>> What does this utility do?
>>
>> The LOCK utility is nothing more than a DCL interface to the distributed lock manager system services SYS$ENQ and SYS$DEQ.
>
> Thanks, that is what I was looking for.
>
> I'm rather familiar with the DLM, using it from within programs.  Never 
> thought of using it from DCL.
>

There are a good number of ideas in Unix which can be used to improve
VMS, but the ability to use the DLM to notify everyone else that some
activity or program is running is a far better approach than having to
use lock files to indicate that.

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.