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Date: Sun, 10 Apr 2005 17:13:28 -0600
From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Subject: Re: DJGPP v2.04 Bugs - suggested patch
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On Sun, 10 Apr 2005 22:09:08 +0300, Eli Zaretskii <eliz AT gnu DOT org>
wrote:

>> Date: Sun, 10 Apr 2005 11:30:46 -0600
>> From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
>> 
>> Last buffer isn't written at all: you might want to try adding
>> fflush() every 1000 bytes from 4 294 950 000, every 100 bytes from 
>> 4 294 960 000, and maybe every 10 bytes from 4 294 963 200, as you may
>> only get up to 4GB-4KB == 4 294 963 200 written, but may get to 4GB-6
>> == 4 294 967 290 (limit due to writing 10 bytes a time), and might
>> have to write and fflush a byte at a time to get further than that. 
>
>Isn't it easier to install a SIGINT signal handler, which will fflush
>the stream and exit?

The issue is the amount of data in the library buffer to be flushed to
the OS: once there's too much in the buffer, the write will not
complete and you'll get an error; so you have to reduce the write
granularity near the end, if you don't want to take all day doing 4GB
of small writes to determine the limit. 

-- 
Thanks. Take care, Brian Inglis 	Calgary, Alberta, Canada

Brian DOT Inglis AT CSi DOT com 	(Brian[dot]Inglis{at}SystematicSW[dot]ab[dot]ca)
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