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Re: SPAWN [message #8670 is a reply to message #7751]

Wed, 09 April 1997 00:00

Nobuyuki Tasaka
Messages: 2
Registered: April 1997

Junior Member

Hi Tim,

Tim Patterson wrote:
>
> Hi Nobu,
>
> If you have database retrieval routines already in C,
> have you thought about using CALL_EXTERNAL to link
> the C routines directly into your IDL code and save you
> having to use SPAWNs which will likely be slower.
>
> There's a lot of examples out there for calling up C from
> IDL and it's now a relatively simple thing to set up on
> most platforms.
>
> Tim

Thanks for your recommendation.

CALL_EXTERNAL (and LINKIMAGE also) is useful to link C routines
but needs to change codes to be portable to other systems, say,
from SunOS 4.1.3 to Solaris 2.5 or SGI etc. SPAWN is slow for
parsing data but there is no fear of this kind of problem.

In my case, I'm transferring the main portion of data to memory
map file by C routine, and this file is readable as a normal file
for any other applications.

My concern is how to use SPAWN for parsing list and errors from
that C routine to IDL, data size of which are not so large.

Please let me know your opinion.

Nobu

---------------------------------
Nobuyuki Tasaka
GE Medical Systems
3200 N Grandview Blvd,
Waukesha, WI 53188
(Phone) 414-521-6577
(E-mail) tasaka@mr.med.ge.com
---------------------------------

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[Message index]

		SPAWN and reading from a socket? By: alpha on Thu, 16 January 1997 00:00
		Re: SPAWN and reading from a socket? By: alpha on Fri, 17 January 1997 00:00
		Re: SPAWN and reading from a socket? By: plugge on Fri, 17 January 1997 00:00
		Re: SPAWN By: Tim Patterson on Wed, 09 April 1997 00:00
		Re: SPAWN By: thompson on Wed, 09 April 1997 00:00
		Re: SPAWN By: Nobuyuki Tasaka on Wed, 09 April 1997 00:00
		Re: SPAWN By: Tim Patterson on Tue, 08 April 1997 00:00

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