SIGIO interrupts poll

SIGIO interrupts poll

[redsprite]

I'm working on a large software project and two of the developers have coded each other into a corner.

Specifically, one thread catches SIGIO to read from a hardware device over the serial port. A second thread uses poll() to read from some sockets to other computers.

Independently they work, but when put together the thread that catches SIGIO is preventing the socket-reading thread from getting any of its data.

Is there a way to have the SIGIO handler re-throw the signal so the thread using poll() can catch it?

Andrea

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Re: SIGIO interrupts poll

[Glynn Clements]

redsprite wrote:

> I'm working on a large software project and two of the developers have
> coded each other into a corner.
> 
> Specifically, one thread catches SIGIO to read from a hardware device
> over the serial port. A second thread uses poll() to read from some
> sockets to other computers.
> 
> Independently they work, but when put together the thread that catches
> SIGIO is preventing the socket-reading thread from getting any of its
> data.
> 
> Is there a way to have the SIGIO handler re-throw the signal so the
> thread using poll() can catch it?

If you don't need the siginfo_t, you can use pthread_kill() to send a
signal to a specific thread.

-- 
Glynn Clements <glynn.clements@virgin.net>