Esempi in C++ (Cpp) per XPC_UNPACK_ARG2

Esempio n. 1

static int
xpc_kthread_start(void *args)
{
	short partid = XPC_UNPACK_ARG1(args);
	u16 ch_number = XPC_UNPACK_ARG2(args);
	struct xpc_partition *part = &xpc_partitions[partid];
	struct xpc_channel *ch;
	int n_needed;
	unsigned long irq_flags;

	dev_dbg(xpc_chan, "kthread starting, partid=%d, channel=%d\n",
		partid, ch_number);

	ch = &part->channels[ch_number];

	if (!(ch->flags & XPC_C_DISCONNECTING)) {

		/* let registerer know that connection has been established */

		spin_lock_irqsave(&ch->lock, irq_flags);
		if (!(ch->flags & XPC_C_CONNECTEDCALLOUT)) {
			ch->flags |= XPC_C_CONNECTEDCALLOUT;
			spin_unlock_irqrestore(&ch->lock, irq_flags);

			xpc_connected_callout(ch);

			spin_lock_irqsave(&ch->lock, irq_flags);
			ch->flags |= XPC_C_CONNECTEDCALLOUT_MADE;
			spin_unlock_irqrestore(&ch->lock, irq_flags);

			/*
			 * It is possible that while the callout was being
			 * made that the remote partition sent some messages.
			 * If that is the case, we may need to activate
			 * additional kthreads to help deliver them. We only
			 * need one less than total #of messages to deliver.
			 */
			n_needed = xpc_n_of_deliverable_payloads(ch) - 1;
			if (n_needed > 0 && !(ch->flags & XPC_C_DISCONNECTING))
				xpc_activate_kthreads(ch, n_needed);

		} else {
			spin_unlock_irqrestore(&ch->lock, irq_flags);
		}

		xpc_kthread_waitmsgs(part, ch);
	}

	/* let registerer know that connection is disconnecting */

	spin_lock_irqsave(&ch->lock, irq_flags);
	if ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) &&
	    !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) {
		ch->flags |= XPC_C_DISCONNECTINGCALLOUT;
		spin_unlock_irqrestore(&ch->lock, irq_flags);

		xpc_disconnect_callout(ch, xpDisconnecting);

		spin_lock_irqsave(&ch->lock, irq_flags);
		ch->flags |= XPC_C_DISCONNECTINGCALLOUT_MADE;
	}
	spin_unlock_irqrestore(&ch->lock, irq_flags);

	if (atomic_dec_return(&ch->kthreads_assigned) == 0 &&
	    atomic_dec_return(&part->nchannels_engaged) == 0) {
		xpc_indicate_partition_disengaged(part);
	}

	xpc_msgqueue_deref(ch);

	dev_dbg(xpc_chan, "kthread exiting, partid=%d, channel=%d\n",
		partid, ch_number);

	xpc_part_deref(part);
	return 0;
}

Esempio n. 2

File: xpc_main.c Progetto: romanbb/android_kernel_lge_d851

static int
xpc_kthread_start(void *args)
{
	short partid = XPC_UNPACK_ARG1(args);
	u16 ch_number = XPC_UNPACK_ARG2(args);
	struct xpc_partition *part = &xpc_partitions[partid];
	struct xpc_channel *ch;
	int n_needed;
	unsigned long irq_flags;
	int (*n_of_deliverable_payloads) (struct xpc_channel *) =
		xpc_arch_ops.n_of_deliverable_payloads;

	dev_dbg(xpc_chan, "kthread starting, partid=%d, channel=%d\n",
		partid, ch_number);

	ch = &part->channels[ch_number];

	if (!(ch->flags & XPC_C_DISCONNECTING)) {

		/*                                                          */

		spin_lock_irqsave(&ch->lock, irq_flags);
		if (!(ch->flags & XPC_C_CONNECTEDCALLOUT)) {
			ch->flags |= XPC_C_CONNECTEDCALLOUT;
			spin_unlock_irqrestore(&ch->lock, irq_flags);

			xpc_connected_callout(ch);

			spin_lock_irqsave(&ch->lock, irq_flags);
			ch->flags |= XPC_C_CONNECTEDCALLOUT_MADE;
			spin_unlock_irqrestore(&ch->lock, irq_flags);

			/*
                                                     
                                                        
                                                  
                                                       
                                                       
    */
			n_needed = n_of_deliverable_payloads(ch) - 1;
			if (n_needed > 0 && !(ch->flags & XPC_C_DISCONNECTING))
				xpc_activate_kthreads(ch, n_needed);

		} else {
			spin_unlock_irqrestore(&ch->lock, irq_flags);
		}

		xpc_kthread_waitmsgs(part, ch);
	}

	/*                                                      */

	spin_lock_irqsave(&ch->lock, irq_flags);
	if ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) &&
	    !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) {
		ch->flags |= XPC_C_DISCONNECTINGCALLOUT;
		spin_unlock_irqrestore(&ch->lock, irq_flags);

		xpc_disconnect_callout(ch, xpDisconnecting);

		spin_lock_irqsave(&ch->lock, irq_flags);
		ch->flags |= XPC_C_DISCONNECTINGCALLOUT_MADE;
	}
	spin_unlock_irqrestore(&ch->lock, irq_flags);

	if (atomic_dec_return(&ch->kthreads_assigned) == 0 &&
	    atomic_dec_return(&part->nchannels_engaged) == 0) {
		xpc_arch_ops.indicate_partition_disengaged(part);
	}

	xpc_msgqueue_deref(ch);

	dev_dbg(xpc_chan, "kthread exiting, partid=%d, channel=%d\n",
		partid, ch_number);

	xpc_part_deref(part);
	return 0;
}