[Info-vax] Porting logical name applications to Unix

[VAXman- at SendSpamHere.ORG]

In article <00A923F6.23C7AB20 at SSRL.SLAC.STANFORD.EDU>, winston at SSRL.SLAC.STANFORD.EDU (Alan Winston - SSRL Central Computing) writes:
>In article <ceznAdBoufxH at eisner.encompasserve.org>, koehler at eisner.nospam.encompasserve.org (Bob Koehler) writes:
>>In article <00A923BB.4839ED4B at SSRL.SLAC.STANFORD.EDU>, winston at SSRL.SLAC.STANFORD.EDU (Alan Winston - SSRL Central Computing) writes:
>>> 
>>> They *can*, but in fact (on VMS, even) whether your C program will immediately
>>> start acting on the updated translation depends on the setting of a C 
>>> runtime logical name.  (We got better performance from Apache when we had it
>>> cache the translation rather than retranslating hundreds of thousands of
>>> times).
>>
>>   What runtime logical name?  Unless the C RTL is going out of its way
>>   to complicate things logical name translation for file opens are
>>   done by RMS.
>>
>
>DECC$ENABLE_GETENV_CACHE 
>
>
>I wasn't talking about file name translation in particular, but logical names
>in general.  But in the case of long-running C programs (probably the only case
>you might want to enable a GETENV_CACHE, they'll typically open their files at
>the beginning, which means you can change the logical name variable all you
>want after the file is open in  your long-running program, but it's still going
>to have the old file open.

Do you set this system-wide (DEFINE/SYSTEM) or only for Apache (DEFINE/JOB)?

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