On Mon, Dec 14, 2009 at 02:45:38PM -0500, Stephen Sinclair wrote: > I didn't read the others, but I looked at this one and I think it's > important to point out some problems with it. He is claiming that you > cannot increment an integer atomically, which is true, but this > doesn't mean that the reads and writes, by themselves, are not atomic > operations.
True. OTOH having devoted cq. wasted part of my life programming SPARC machines I can confirm Paul Davis' comment on those: sig_atomic_t on these machines was 24 bits. But I *never* understood how on earth they managed to create this anomaly on what was after all a full 32-bit architecture. A simple pattern I use to avoid the incr/decr problem is to use two variables, each one of them being modified (incremented) by only one thread. Instead of testing for zero test for equality. Ciao, -- FA _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
