site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Jan 28, 2005, at 11:44 AM, Parav Pandit wrote:
Hi, Please grant me to ask this silly question.
I am creating one thread using IOCreateThread(). I want to do syncronization between this thread and my interrupt handler, which is in the workloop thread.
Currently I create one semaphore using semaphore_create(current_task()) in the start().
Sounds like you have two kernel only threads. If this is the case, you will get undefined behavior from using current_task(), since you are tying the semaphore to a (possibly) transient task. When the task disappears (or gets a signal) the semaphore will make it's way back out to userland and disappear with it. If you are dealing with strictly kernel threads, use the kernel global kernel_task to create the sem. tied to the kernel. HTH. Brian Bergstrand <http://www.bergstrand.org/brian/>, AIM: triryche206 PGP Key: <http://www.bergstrand.org/brian/misc/public_key.txt> MCSE - Must Consult Someone Experienced As of 01:29:00 PM, iTunes is playing "Guilt On Skin" from "The Dying Daylights" by "Charon" -----BEGIN PGP SIGNATURE----- Version: PGP 8.1 iQA/AwUBQfqFzHnR2Fu2x7aiEQKoJgCfSJrVKnVmjU20JhLm9XvbxbnZAv8AoP2X nKwJijjcOy99p3m1nhO5MHbN =jy+U -----END PGP SIGNATURE----- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com