Exemplos de xpc_channel_mgr em C++ (Cpp)

Exemplo n.º 1

Arquivo: xpc_main.c Projeto: 274914765/C

/*
 * When XPC HB determines that a partition has come up, it will create a new
 * kthread and that kthread will call this function to attempt to set up the
 * basic infrastructure used for Cross Partition Communication with the newly
 * upped partition.
 *
 * The kthread that was created by XPC HB and which setup the XPC
 * infrastructure will remain assigned to the partition until the partition
 * goes down. At which time the kthread will teardown the XPC infrastructure
 * and then exit.
 *
 * XPC HB will put the remote partition's XPC per partition specific variables
 * physical address into xpc_partitions[partid].remote_vars_part_pa prior to
 * calling xpc_partition_up().
 */
static void
xpc_partition_up(struct xpc_partition *part)
{
    DBUG_ON(part->channels != NULL);

    dev_dbg(xpc_chan, "activating partition %d\n", XPC_PARTID(part));

    if (xpc_setup_infrastructure(part) != xpSuccess)
        return;

    /*
     * The kthread that XPC HB called us with will become the
     * channel manager for this partition. It will not return
     * back to XPC HB until the partition's XPC infrastructure
     * has been dismantled.
     */

    (void)xpc_part_ref(part);    /* this will always succeed */

    if (xpc_make_first_contact(part) == xpSuccess)
        xpc_channel_mgr(part);

    xpc_part_deref(part);

    xpc_teardown_infrastructure(part);
}

Exemplo n.º 2

/*
 * When XPC HB determines that a partition has come up, it will create a new
 * kthread and that kthread will call this function to attempt to set up the
 * basic infrastructure used for Cross Partition Communication with the newly
 * upped partition.
 *
 * The kthread that was created by XPC HB and which setup the XPC
 * infrastructure will remain assigned to the partition becoming the channel
 * manager for that partition until the partition is deactivating, at which
 * time the kthread will teardown the XPC infrastructure and then exit.
 */
static int
xpc_activating(void *__partid)
{
	short partid = (u64)__partid;
	struct xpc_partition *part = &xpc_partitions[partid];
	unsigned long irq_flags;

	DBUG_ON(partid < 0 || partid >= xp_max_npartitions);

	spin_lock_irqsave(&part->act_lock, irq_flags);

	if (part->act_state == XPC_P_AS_DEACTIVATING) {
		part->act_state = XPC_P_AS_INACTIVE;
		spin_unlock_irqrestore(&part->act_lock, irq_flags);
		part->remote_rp_pa = 0;
		return 0;
	}

	/* indicate the thread is activating */
	DBUG_ON(part->act_state != XPC_P_AS_ACTIVATION_REQ);
	part->act_state = XPC_P_AS_ACTIVATING;

	XPC_SET_REASON(part, 0, 0);
	spin_unlock_irqrestore(&part->act_lock, irq_flags);

	dev_dbg(xpc_part, "activating partition %d\n", partid);

	xpc_allow_hb(partid);

	if (xpc_setup_ch_structures(part) == xpSuccess) {
		(void)xpc_part_ref(part);	/* this will always succeed */

		if (xpc_make_first_contact(part) == xpSuccess) {
			xpc_mark_partition_active(part);
			xpc_channel_mgr(part);
			/* won't return until partition is deactivating */
		}

		xpc_part_deref(part);
		xpc_teardown_ch_structures(part);
	}

	xpc_disallow_hb(partid);
	xpc_mark_partition_inactive(part);

	if (part->reason == xpReactivating) {
		/* interrupting ourselves results in activating partition */
		xpc_request_partition_reactivation(part);
	}

	return 0;
}