Re: R3.12 Environment Parameter system

[lewis@csg.lbl.gov (Steve Lewis)]

I agree with Andrew Johnson that things could be neater.  As of Beta8,
near as I can make out definitions appear in 3 places (which are
slightly moved from Beta1) and where some over-rides occur--in some
cases in code, not headers-- (such as EPICS_IOC_LOG_PORT) in addition
to the intended overrides in resource.def and setenv.


Sorry for the width in the table below; right-most column over-rides.

Parameter		envDefs.h	epicsEnvParams.h	envSubr.c
--------		---------	----------------	---------
EPICS_TS_MIN_VALUE			360
EPICS_IOC_LOG_VALUE			164.54.8.167
EPICS_IOC_FILE_VALUE			1000000
EPICS_IOC_LOG_FILE_TXT			/home/phebos.../iocLog.text

EPICS_TS_MIN_WEST						EPICS_TS_MIN_VALUE
EPICS_CMD_PROTO_PORT
EPICS_AR_PORT							7002
EPICS_IOC_LOG_PORT	6500					7004
EPICS_IOC_LOG_INET						EPICS_IOC_LOG_VALUE
EPICS_IOC_LOG_FILE_LIMIT 1000000				EPICS_IOC_FILE_VALUE
EPICS_IOC_LOG_FILE_NAME	./iocLog.text				EPICS_IOC_LOG_FILE_TXT
EPICS_CA_ADDR_LIST
EPICS_CA_CONN_TMO	30.0
EPICS_CA_BEACON_PERIOD	15.0
EPICS_CA_AUTO_ADDR_LIST	YES
EPICS_CA_REPEATER_PORT	5065
EPICS_CA_SERVER_PORT	5064

Found "epicsPrtEnvParams()" quite handy!  We have exercised the
EPICS_CA_ADDR_LIST to work across a routing Sun, and with
EPICS_CA_CONN_TMO and EPICS_CA_BEACON_PERIOD set very short I can
get snappy response!

I do thing a few changes in defaults would be more site-neutral:
EPICS_TS_MIN_VALUE		0		GMT
EPICS_IOC_LOG_VALUE		127.0.0.1	Loopback
EPICS_IOC_LOG_FILE_TXT		./iocLog.text	as booted

	Steve Lewis, Leader			SALewis@LBL.gov
	Computer Systems Group 			Mail Stop 46A-1123
	Lawrence Berkeley Laboratory		Tel: 510/486-7702
	Berkeley, CA 94720			Fax: 510/486-5936