From:	MERC::"uunet!CRVAX.SRI.COM!RELAY-INFO-VAX" 28-DEC-1992 21:55 28-DEC-1992 21:55:00.00
To:	info-vax@sri.com
CC:	
Subj:	Re: VAX c

On Dec 25,  3:08am, Ehud Gavron 602-570-2000 x. 2546 wrote:
> Subject: Re: VAX c
>In article <1992Dec24.173709.16437@mailer.cc.fsu.edu>, cliff@evax9.eng.fsu.edu writes...
># 
>#Is there a way to get VAX C to flush the VMS file buffers? 
># 
>#I've got a program that reads data in for the tta2: port and then writes it to 
>#a file. The problem is that the data doesn't get written to the file until the 
>#buffer is full, and that may not happen but once every day or two.  
>
>	fflush(stream)
>
>	example:
>	fflush(stdout);
>

	You may also want to force RMS to flush its buffers. Use
		fsync(file-number)
	to do this. You can use the fileno() macro to get the
	file-number from a FILE structure.

	The last time I checked, fsync() was still undocumented,
	but it's been around for years, and hasn't changed, so
	it's probably safe enough to use.

Louis
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      / Louis Dunne                          /                                /
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