Hi,
Thanks to both you for your help. I see my concern was unnecessary,
as I am indeed using separate file descriptors for the threads.
Thanks!
~ Roger
On Thu, Jul 31, 2008 at 1:47 PM, Jens Alfke <email@hidden> wrote:
>
> On 29 Jul '08, at 11:06 PM, Roger Herikstad wrote:
>
> I have a cocoa program that will read these index files and
> fetch the appropriate data from the big file, plot it and store as an
> image. I would like to run these print operations in parallel, but I'm
> concerned that a conflict will arise if two threads are reading into
> the same file.
>
> As long as each thread opens its own file descriptor, you'll be fine. Each
> descriptor has its own cursor. The thing you shouldn't do is share a
> single file descriptor between threads (unless you use the pread/pwrite API,
> which is stateless.)
> —Jens
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