Experimental Physics and
Industrial Control System

I re-read chapter 15 of App. Dev. Guide. 
1. server (IOC or soft IOC) uses new db access. CA uses old db access.
It is not well for one program (as Epics would like to be) but it isn't
deadly. Ok, I will split my code.
2. DB link uses CA too (if PV is placed in another server). But it is
like that db CA (chapter 15.8) hasn't monitor access. Am I right? From
another side from FRW, INP, OUT and other link field I don't feel
monitor usage too.

Andrei.

-----Original Message-----
From: Jeff Hill [mailto:[email protected]] 
Sent: Friday, October 08, 2004 8:19 PM
To: Liyu, Andrei; [email protected]
Subject: RE: double defenition in Epics


Liyu,

You are mixing the old and new database access interfaces in the same
program which isn't a good idea. That is, don't include db_access.h and
dbFldTypes.h into the same source code.

Jeff

> -----Original Message-----
> From: Liyu, Andrei [mailto:[email protected]]
> Sent: Friday, October 08, 2004 2:38 PM
> To: [email protected]
> Subject: double defenition in Epics
> 
> Hi,
> 	I decide to write Epics server that will take PV from another
> Epics server and use CA directly. And I see
> ==============
> C:\Epics\include\db_access.h(82) : warning C4005: 'DBR_SHORT' : macro
> redefinition
>         C:\Epics\include\dbFldTypes.h(75) : see previous definition of
> 'DBR_SHORT'
> C:\Epics\include\db_access.h(110) : warning C4005: 'DBR_GR_LONG' :
macro
> redefinition
>         C:\Epics\include\dbAccessDefs.h(44) : see previous definition
of
> 'DBR_GR_LONG'
> C:\Epics\include\db_access.h(111) : warning C4005: 'DBR_GR_DOUBLE' :
> macro redefinition
>         C:\Epics\include\dbAccessDefs.h(45) : see previous definition
of
> 'DBR_GR_DOUBLE'
> C:\Epics\include\db_access.h(118) : warning C4005: 'DBR_CTRL_LONG' :
> macro redefinition
>         C:\Epics\include\dbAccessDefs.h(46) : see previous definition
of
> 'DBR_CTRL_LONG'
> C:\Epics\include\db_access.h(119) : warning C4005: 'DBR_CTRL_DOUBLE' :
> macro redefinition
>         C:\Epics\include\dbAccessDefs.h(47) : see previous definition
of
> 'DBR_CTRL_DOUBLE'
> C:\Epics\include\db_access.h(120) : warning C4005: 'DBR_PUT_ACKT' :
> macro redefinition
>         C:\Epics\include\dbFldTypes.h(82) : see previous definition of
> 'DBR_PUT_ACKT'
> C:\Epics\include\db_access.h(121) : warning C4005: 'DBR_PUT_ACKS' :
> macro redefinition
>         C:\Epics\include\dbFldTypes.h(83) : see previous definition of
> 'DBR_PUT_ACKS'
> C:\Epics\include\db_access.h(125) : warning C4005: 'VALID_DB_REQ' :
> macro redefinition
>         C:\Epics\include\dbFldTypes.h(85) : see previous definition of
> 'VALID_DB_REQ'
> C:\Epics\include\db_access.h(126) : warning C4005: 'INVALID_DB_REQ' :
> macro redefinition
>         C:\Epics\include\dbFldTypes.h(86) : see previous definition of
> 'INVALID_DB_REQ'
> ===============
> 
> Have anybody comments?
> 
> Thank you - Andrei.

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