| Title: | Alpha Developer Support |
| Notice: | [email protected], 800-332-4786 |
| Moderator: | HYDRA::SYSTEM |
| Created: | Mon Jun 06 1994 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3722 |
| Total number of notes: | 11359 |
Company Name : Control Data France - Point 21247
Contact Name : Patrick Prud'homme
Phone : (33) 1 41 37 80 24
Fax : (33) 1 41 37 81 64
Email : [email protected]
Date/Time in : 28-FEB-1997 12:49:06
Entered by : Nick Hudson
SPE center : REO
Category : unix
OS Version : 4.0
System H/W :
Brief Description of Problem:
-----------------------------
From: ESSB::ESSB::MRGATE::"ILO::ESSC::bsanting" 28-FEB-1997 11:00:21.92
To: RDGENG::ASAP
CC:
Subj: 21247 Control Data France
From: NAME: ESCTECH@ILO
TEL: (822-)6704
ADDR: ILO <bsanting@ESSC@ILO>
To: ASAP@RDGENG@MRGATE
Hello -
POINT Log Number 21247
Company Name Control Data France
Engineers name Patrick Prud'homme
Telephone Number tel : (33) 1 41 37 80 24
Fax Number fax : (33) 1 41 37 81 64
E-mail Address [email protected]
Operating System, Version DIGITAL Unix 4.0
Platform Alpha
Problem Statement
We have a very important problem ,trying to make our product working.
Our product is an archiving solution and we need to communicate
data read or written from a daemon to user environement.
In order to do that we use a share memory beetween the daemon
and the user .
It seems that doing any I/O : reading / writing from a DAT for example
to a shared memory crash the system.
We are running digital unix version 4.
Do you know this problem ? do you have a fix or a work around ?
Thanks for your help.
QED Qualitas Est Demonstrandum
==============================
Ben Santing, Technical Consultant Phone: DTN 822 4330
European Customer Service Centre Phone: DTN 822 4269
Digital Equipment International B.V. FAX: DTN 822 4445
In replying, please use [email protected]
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3246.1 | RDGENG::WOOD_J | [email protected] | Wed Mar 12 1997 08:45 | 25 | |
Date: 12-MAR-1997 13:44:42.64 From: DEC:.REO.REOVTX::WOOD_J "[email protected]" Subj: Re: Digital ASAP #21247: shared memory on D/UNIX v4 To: SMTP%"[email protected]" Patrick, I have not found any mention of bugs in Digital UNIX v4 re. mapping shared memory. I have been unable to reproduce your problem using your example program. I did notice that you example program does a number of write() calls to the shared-memory descriptor. This is not strictly legal; although when I amended the code to check the status return I didn't actually get an error back. You should use ftruncate() to set the size of the shared-memory object. I suggest you change your program and see if the problem persists. Regards, John Wood | |||||
| 3246.2 | RDGENG::WOOD_J | [email protected] | Fri Mar 14 1997 02:56 | 10 | |
Date: 13-MAR-1997 04:55:42.28 From: SMTP%"[email protected]" Subj: Re: Digital ASAP #21247: shared memory on D/UNIX v4 To: [email protected] ([email protected]) We are going to make the change you request , unfortunatly the test will be done only friday, i will let you know as soon as possible. Thanks for your help. Regards. Patrick. | |||||
| 3246.3 | closed | RDGENG::WOOD_J | [email protected] | Wed Apr 30 1997 05:31 | 28 |
John, This problem has been solved by a DEC patch. Sorry for the delay, I was off for a while Patrick. At 10:21 26/03/1997 GMT, [email protected] wrote: >Patrick, > >I've not heard anything from you since March 13: > >>We are going to make the change you request , unfortunatly the test will >>be done only friday, i will let you know as soon as possible. > >Can I close this call? > > John > ____________________________________________________________ / Patrick Prud'homme email: [email protected] / / Storage Group tel : (33) 1 41 37 80 24 / / fax : (33) 1 41 37 81 64 / / / / Control Data France tel : (33) 1 41 37 80 00 / / "LE CAPITOLE" / / 55 Av des Champs Pierreux / / 92012 Nanterre CEDEX / / France / /___________________________________________________________/ | |||||