Re: File access questions

On Nov 16, 2011, at 10:49 AM, Kyle Sluder wrote:

> On Wed, Nov 16, 2011 at 9:36 AM, Nathan Sims
> <[email protected]> wrote:
>> The integrity of the data being written/read (from one update to the =
next)
>> isn't critical (representing very small changes in temperature), so =
flock()
>> looks like it should be sufficient if all processes cooperate.
>=20
> In that case, why use a file at all? It sounds like you've got one
> daemon that reports the temperature and N clients on the same machine
> that poll for the temperature. Would another IPC mechanism be more
> appropriate, like perhaps a Unix domain socket?

Wow, I didn't know about Unix domain sockets, but this seems to be a =
perfect fit. I can make the Cocoa process into a mini UDP server on a =
known sun_path, and the C processes can get the temp data from it by =
sending a request to the same sun_path and reading the response packet, =
all without connecting. That should be a little more elegant than using =
files.

Thanks!