Re: Files larger than 2.9 gigs
Re: Files larger than 2.9 gigs
- Subject: Re: Files larger than 2.9 gigs
- From: <email@hidden>
- Date: Wed, 21 Dec 2005 16:17:12 -0500
- Bounce-to: <email@hidden>
So basically I was on the right track. That makes me feel a little less
thick.
I'd just prefer to actually write the code for this instead of writing a
gui. besides if some one could point out the mistake in the code I've
posted to the list I might be able to get this working.
mark
On 12/21/2005, "Markus Hitter" <email@hidden> wrote:
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Am 21.12.2005 um 20:35 schrieb <email@hidden>
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<email@hidden>:
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> I'm not real good with files in plain C so the information I've
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> found on pwrite is not very helpful. does any one have a link to some
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> example code using pwrite?
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No idea why the group here uniquely recommends the uncommon pwrite()
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while there's write() and fwrite() as well. Any basic C textbook
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should show you a valid fopen(); fread()/fwrite(); fclose() sequence,
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but a already recommended shell command system("cat f1 f2 f3 > fx");
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is very likely faster and runs in a separate thread/task already.
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For the progress bar, you can check the size of the resulting file
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periodically. Not too often or performance will suffer.
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If you want to learn about high performance file I/O, look up the
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"cat" command's source in one of the various open source Unices
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(OpenDarwin is down right now).
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Markus
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Dipl. Ing. Markus Hitter
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http://www.jump-ing.de
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