On Thu, May 06, 2004 at 09:49:31PM -0400, Paul Davis wrote: > at the risk of endlessly repeating myself,
If you're being asked this frequently, I'd recommend adding some notes to the documentation, recommending using poll() and not SND_PCM_ASYNC, and offering a brief explanation like this one. > SIGIO is basically > useless. your handler executes in signal-handling context, and can do > very, very little. not even all system calls are legal in this context. > SIGIO is basically a "poor man's thread system", and not much more. Practical use aside, isn't that common conditions for a sound callback (which under some architectures, as I understand it, are called from an interrupt)? By the way, do you have a reference to system calls which are not legal from a signal handler in Linux? I've never seen things not work in a signal handler, even when writing a crash handler that forks a child (to output crash info in a clean environment) and at one point even did some ptracing of other threads, all from a SIGSEGV handler. -- Glenn Maynard ------------------------------------------------------- This SF.Net email is sponsored by Sleepycat Software Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO. http://www.sleepycat.com/telcomwpreg.php?From=osdnemail3 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
