Re: C/C++ File Locking

[Charles Wilt <charles.wilt@xxxxxxxxx>]

Well that's my something new learned today.

Thanks Elvis.

Charles

On Mon, Feb 2, 2009 at 11:32 AM, Elvis Budimlic
<ebudimlic@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> If IFS stream file, check out open() function's O_SHARE_NONE flag.
> If native (library) file system, check out ALCOBJ command.
>
> Hth, Elvis
>
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>
> -----Original Message-----
> Subject: [C400-L] C/C++ File Locking
>
> I am new to the iSeries but not C/C++.  I am porting a program that runs
> on multiple platforms.  This program may have several instances running
> concurrently but each program shares on data file.  My issue is what
> function do I use to lock the file so that other apps can not read/write
> this file while it is being locked by another process.  On windows I
> used CreateFile() and on UNIX I used Flock().  I am looking for
> something similar or that will at least produce the same results.  I
> have attempted modifying the share permissions in the CL but this locks
> the file for the entire run of the program and not only when this file
> is open.
>
>
> Thanks,
>
> Edgar Gillock
> ed_gillock@xxxxxx
>
>
>
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