Ejemplo n.º 1
0
/*
 * This function is where XPC's kthreads wait for messages to deliver.
 */
static void
xpc_kthread_waitmsgs(struct xpc_partition *part, struct xpc_channel *ch)
{
	do {
		/* deliver messages to their intended recipients */

		while (xpc_n_of_deliverable_payloads(ch) > 0 &&
		       !(ch->flags & XPC_C_DISCONNECTING)) {
			xpc_deliver_payload(ch);
		}

		if (atomic_inc_return(&ch->kthreads_idle) >
		    ch->kthreads_idle_limit) {
			/* too many idle kthreads on this channel */
			atomic_dec(&ch->kthreads_idle);
			break;
		}

		dev_dbg(xpc_chan, "idle kthread calling "
			"wait_event_interruptible_exclusive()\n");

		(void)wait_event_interruptible_exclusive(ch->idle_wq,
				(xpc_n_of_deliverable_payloads(ch) > 0 ||
				 (ch->flags & XPC_C_DISCONNECTING)));

		atomic_dec(&ch->kthreads_idle);

	} while (!(ch->flags & XPC_C_DISCONNECTING));
}
Ejemplo n.º 2
0
static void
xpc_kthread_waitmsgs(struct xpc_partition *part, struct xpc_channel *ch)
{
	int (*n_of_deliverable_payloads) (struct xpc_channel *) =
		xpc_arch_ops.n_of_deliverable_payloads;

	do {
		/*                                               */

		while (n_of_deliverable_payloads(ch) > 0 &&
		       !(ch->flags & XPC_C_DISCONNECTING)) {
			xpc_deliver_payload(ch);
		}

		if (atomic_inc_return(&ch->kthreads_idle) >
		    ch->kthreads_idle_limit) {
			/*                                        */
			atomic_dec(&ch->kthreads_idle);
			break;
		}

		dev_dbg(xpc_chan, "idle kthread calling "
			"wait_event_interruptible_exclusive()\n");

		(void)wait_event_interruptible_exclusive(ch->idle_wq,
				(n_of_deliverable_payloads(ch) > 0 ||
				 (ch->flags & XPC_C_DISCONNECTING)));

		atomic_dec(&ch->kthreads_idle);

	} while (!(ch->flags & XPC_C_DISCONNECTING));
}