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Conference bulova::decw_jan-89_to_nov-90

Title:	DECWINDOWS 26-JAN-89 to 29-NOV-90
Notice:	See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit
Moderator:	STAR::VATNE

Created:	Mon Oct 30 1989
Last Modified:	Mon Dec 31 1990
Last Successful Update:	Fri Jun 06 1997
Number of topics:	3726
Total number of notes:	19516

1427.0. "DECW$TRANSPORT_LOCAL.EXE ???" by HOTSHT::HABERLAND () Tue Sep 12 1989 18:26

Hello,

I have a customer who is interested into what calls DECW$TRANSPORT_LOCAL.EXE 
and why is it called twice.

If you do an

 analyze/system

 show summary (select an application, such as session manager)

 show process/chan/index=xx (xx is the index number)

after looking at this, it calls DECW$TRANSPORT_LOCAL.EXE twice.
The question is what calls it and why?
Any information would be greatly appreciated.

Thanks,
     Dave Haberland
     SWS/E Graphics Support

T.R	Title	User	Personal Name	Date	Lines
1427.1	Minor bug	STAR::VATNE	Peter Vatne, VMS Development	`Tue Sep 12 1989 19:57`	7
	There is a minor bug in DECwindows V1 that causes transport images to be opened twice. It has no significant effect on performance, however. This has been fixed in DECwindows V2 (now in field test with VMS V5.3). DECW$TRANSPORT_LOCAL is the transport for transferring X protocol requests and replies between the server and client processes using shared memory.
1427.2	Thanks	HOTSHT::HABERLAND		`Wed Sep 13 1989 14:52`	5
	Thanks for the info. The customer will be very greatful, especially since he thought it was him.
1427.3	Who calls DECW$TRANSPORT_LOCAL.EXE	HOTSHT::HABERLAND		`Fri Sep 15 1989 16:23`	11
	What Peter said in .1 makes since. What the customer is using DECwindows and a third party GKS. So he is getting multiple copies of DECW$TRANSPORT_LOCAL.EXE. Does anyone know what particulary calls DECW$TRANSPORT_LOCAL.EXE and under what circumstances does it happen? I know what it does, but what calls it and when. Thanks, Dave
1427.4	More details	STAR::VATNE	Peter Vatne, VMS Development	`Fri Sep 15 1989 17:17`	18
	Actually, the customer is not getting multiple copies of DECW$TRANSPORT_LOCAL.EXE The customer is getting the file DECW$TRANSPORT_LOCAL.EXE opened twice, which is not the same thing. It doesn't matter what third party software the customer is using, how many connections he opens, or anything. Xlib calls routines in DECW$TRANSPORT_COMMON, which in turn calls routines in DECW$TRANSPORT_LOCAL. The server also calls routines in DECW$TRANSPORT_COMMON which calls routines in DECW$TRANSPORT_LOCAL. The bug is that when DECW$TRANSPORT_COMMON goes to find DECW$TRANSPORT_LOCAL, it opens the file twice. However, it loads only one copy into memory. The amount of memory used to keep the file open twice is not very great, which is why I said that this bug has no significant performance impact.
1427.5	One more try	HOTSHT::HABERLAND		`Mon Sep 25 1989 17:16`	14
	.4 > Xlib calls routines in DECW$TRANSPORT_COMMON, which in turn > calls routines in DECW$TRANSPORT_LOCAL. What Xlib calls, calls DECW$TRANSPORT_COMMON. The customers problem is acting wierd. It is opening up DECW$TRANSPORT_LOCAL multiple times (more than 2), usually 3 - 4 times. Thanks, Dave
1427.6	Please post ANALYZE/SYSTEM output...	STAR::VATNE	Peter Vatne, VMS Development	`Mon Sep 25 1989 18:15`	6
	Please post the results of a SHOW PROCESS/CHANNELS command. By the way, is this problem posing any real problems for the customer? Or are they just curious? If this is causing them real trouble, you ought to pursue this through regular support channels...