Re: Asynchronously writing to a file?
Re: Asynchronously writing to a file?
- Subject: Re: Asynchronously writing to a file?
- From: Dan Bernstein <cocoa-dev%email@hidden>
- Date: Thu, 13 Mar 2003 16:40:21 +0200
Thanks.
Actually, I already have writing in a dedicated thread. I have a pool
of buffers which one thread fills up and another thread writes and
returns to the pool.
The problem is that I the number of buffers is fixed. When another
process on the system uses the disk I'm writing to heavily, sometimes
the writing thread blocks for too long and I run out of buffers.
I thought maybe instead of rewriting my code to dynamically allocate
additional buffers (which could be just as bad and just as blocking, if
the allocation requires a pageout and the VM lives on that same disk) I
should let the OS take care of it (using its own clever buffer
allocation techniques).
-- Dan
On Thursday, March 13, 2003, at 04:01 PM, Robert Cerny wrote:
Hi,
the best way would be to stand another thread to write the file. I
would recommend the create a copy of your document in memory (to
prevent file corruption in case of user changes while saving it) and
write it.
Robert
On Thursday, Mar 13, 2003, at 13:21 Europe/Prague, Dan Bernstein wrote:
Hi all,
I have an NSFileHandle I'd like to write to asynchronously (i.e.
without blocking). What's the... simplest way to do this?
TIA,
-- Dan
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