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call_external for file I/O [message #13223]

Wed, 21 October 1998 00:00

Charlie Solomon
Messages: 10
Registered: September 1998

Junior Member

Hello experts,

Is anyone out there using call_external to read image files into a variable
on the Windows NT platform? I have used a c routine on the Solaris platform
called map_file, which bypasses the standard I/O layer and maps data
directly into/from memory, making data access very fast compared to using
IDL's built in file I/O utils. I did not write map_file, but my
understanding is that it utilizes features in unix which allow this sort of
memory mapping without going through the stdio layer. I would love to get
the same speed on my NT machine. Any ideas?

Thanks,
Charlie Solomon
Raytheon Systems Co., El Segundo

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		call_external for file I/O By: Charlie Solomon on Wed, 21 October 1998 00:00
		Re: call_external for file I/O By: korpela on Tue, 27 October 1998 00:00

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