"Johnson, Alex P" wrote:
Alex,
Ok, I have used that info, now I need to know if a remote draw
application has been used on a workstation.
Is there a file somewhere that flags this?
I have written a C program which produces something like the following
output.
B 2GA312 Operator 2GA312:0 1441 root 2000/11/14 15:10:47
B 2WPD01 Operator 2GA312:1 1465 root 2000/11/14 15:10:57
V 2WPD02 View_Only Available
V 2WPD02 View_Only Available
I would now like to flag AW/WPs with an remote draw availability.
When I am happy with the program I will release the code.
I am hoping to use it to make a script that gets a DM from a list of
WPs.
Also a TCL/TK GUI or similar that shows current usage from the list of
WPs.
Darryl
>
> Darryl,
>
> My crack staff of investigators has determined how the Usage display if
> filled. Enjoy.
>
> Regards,
>
> Alex Johnson
> 10707 Haddington
> Houston, TX 77063
> 713.722.2859(v)
> 713.722.2700(sb)
> 713.932.0222(f)
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>
> How DM Usage Display Works
>
> There is no Object Manager variable that can give you the information
> contained in the Usage display. This information is "figured out" by
> FoxView and Display Manager. Here's how they do it:
>
> 1. The names of all the configured FVs or DMs on the workstation can be
> found in the ASCII file
> /usr/fox/wp/data/dmnames.
>
> 2. Each time a FV or DM starts up, it creates a file in /tmp, named
> /tmp/_dm<DMNAME>. For example,
> a FV/DM named DM0001 creates the file /tmp/_dmDM0001. The FV or DM then
> locks the file.
> (A "lock" on a file is just an informational lock. It does not prevent
> other applications from reading or
> writing into the file. However, other applications can check the lock
> status on the file.)
>
> 3. The /tmp/_dm... is an ASCII file containing the following information:
> CLASS DMNAME DMtype Xterm HEAD
> where
> CLASS is a single character indicating the DM class of the FV/DM and
> will be one of the following
> values: 'B', 'O', 'E', 'V', 'R', '-'
> DMNAME is the 6 character name of the FV/DM
> DMtype is the 14 character type, i.e. "Operator", "AuxilaryOper", etc.
> Xterm is the 10 character name of the station where the FV/DM is being
> viewed.
> HEAD is a single character indicating the screen head where the FV/DM is
> being viewed, i.e. '0' or '1'
>
> 4. When the Usage display is called in, FV/DM determine the list of all
> possible DMnames on the
> workstation, from the file /usr/fox/wp/data/dmnames. FV/DM then checks
> to see if a corresponding
> file (/tmp/_dm<DMNAME>) exists for the FV/DM. If the file exists, and
> it's locked, FV/DM read the
> contents of the file to extract the information required for the Usage
> display. If the file is not locked,
> this indicates the FV/DM are not currently running. FV/DM determines
> the contents of the text line
> on the Usage display from workstation configuration information.
>
> 5. FV/DM then create a binary "blocked text" file
> /usr/fox/wp/data/<LBUG>/<DMNAME>/viewdm.readfile
> which contains all the information for all the FV/DMs configured for the
> workstation. This file is I
> fixed record format, and is read into the Usage display using "readfile"
> configurations.
>
> 6. When a FV/DM exits, the lock is automatically removed from the file file
> in /tmp.
>
> The file /usr/fox/wp/data/<LBUG>/<DMNAME>/viewdm.readfile can also be
> created by sending a FV/DM the command "viewdm", i.e.
>
> pref -<DMNAME> dmcmd viewdm
>
> Note: this viewdm file is NOT really ASCII. The file contains a binary
> header section, followed by the ASCII information required for the Usage
> display. However, it does contain the ASCII for each line the Usage
> display.
>
> -----Original Message-----
> From: Darryl Bond [SMTP:[EMAIL PROTECTED]]
> Sent: Monday, December 04, 2000 6:12 PM
> To: 'Foxboro DCS Mail List'
> Subject: Finding Available display managers
>
> Hi All,
> Has anyone discovered a way of querying the information on the
> DM_Usage
> screen without a display manager?
>
> The DM_Usage display gets the data for the XTerm name from
> somewhere, I
> assume an OM variable but it doesn't show on the display when using
> select point.
>
> What I want to do is provide an interface to users which show the
> available display managers on the total system then allow them to
> select
> one. A method of querying the used display managers for location
> would
> also be required.
>
> I have a script which goes to each WP/AW and sorts the process list
> to
> find the location of the display managers used (The DISPLAY variable
> is
> shown on the process list with my startup script). This is very slow
> and
> ugly.
>
> --
> Darryl Bond
>
>
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