示例#1
0
/************************************************************************
*	Function :	freeSubscriptionList
*
*	Parameters :
*		subscription * head ;	head of the subscription list
*
*	Description :	Free's memory allocated for all the subscriptions 
*		in the service table. 
*
*	Return : void ;
*
*	Note :
************************************************************************/
void
freeSubscriptionList( subscription * head )
{
    subscription *next = NULL;

    while( head ) {
        next = head->next;
        freeSubscription( head );
        free( head );
        head = next;
    }
}
示例#2
0
/*!
 * \brief Thread job to Notify a control point.
 *
 * It validates the subscription and copies the subscription. Also make sure
 * that events are sent in order.
 *
 * \note calls the genaNotify to do the actual work.
 */
static void genaNotifyThread(
	/*! [in] notify thread structure containing all the headers and property set info. */
	void *input)
{
	subscription *sub;
	service_info *service;
	subscription sub_copy;
	notify_thread_struct *in = (notify_thread_struct *) input;
	int return_code;
	struct Handle_Info *handle_info;

	/* This should be a HandleLock and not a HandleReadLock otherwise if there
	 * is a lot of notifications, then multiple threads will acquire a read
	 * lock and the thread which sends the notification will be blocked forever
	 * on the HandleLock at the end of this function. */
	/*HandleReadLock(); */
	HandleLock();
	/* validate context */

	if (GetHandleInfo(in->device_handle, &handle_info) != HND_DEVICE) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}

	if (!(service = FindServiceId(&handle_info->ServiceTable, in->servId, in->UDN)) ||
	    !service->active ||
	    !(sub = GetSubscriptionSID(in->sid, service)) ||
	    copy_subscription(sub, &sub_copy) != HTTP_SUCCESS) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}

	HandleUnlock();

	/* send the notify */
	return_code = genaNotify(in->headers, in->propertySet, &sub_copy);
	freeSubscription(&sub_copy);
	HandleLock();
	if (GetHandleInfo(in->device_handle, &handle_info) != HND_DEVICE) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}
	/* validate context */
	if (!(service = FindServiceId(&handle_info->ServiceTable, in->servId, in->UDN)) ||
	    !service->active ||
	    !(sub = GetSubscriptionSID(in->sid, service))) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}
	sub->ToSendEventKey++;
	if (sub->ToSendEventKey < 0)
		/* wrap to 1 for overflow */
		sub->ToSendEventKey = 1;

	/* Remove head of event queue. Possibly activate next */
	{
		ListNode *node = ListHead(&sub->outgoing);
		if (node)
			ListDelNode(&sub->outgoing, node, 1);
		if (ListSize(&sub->outgoing) > 0) {
			ThreadPoolJob *job;
			ListNode *node = ListHead(&sub->outgoing);
			job = (ThreadPoolJob*)node->item;
			/* The new head of queue should not have already been
			   added to the pool, else something is very wrong */
			assert(job->jobId != STALE_JOBID);

			ThreadPoolAdd(&gSendThreadPool, job, NULL);
			job->jobId = STALE_JOBID;
		}
	}

	if (return_code == GENA_E_NOTIFY_UNACCEPTED_REMOVE_SUB)
		RemoveSubscriptionSID(in->sid, service);
	free_notify_struct(in);

	HandleUnlock();
}
示例#3
0
/*!
 * \brief Thread job to Notify a control point.
 *
 * It validates the subscription and copies the subscription. Also make sure
 * that events are sent in order.
 *
 * \note calls the genaNotify to do the actual work.
 */
static void genaNotifyThread(
	/*! [in] notify thread structure containing all the headers and property set info. */
	void *input)
{
	subscription *sub;
	service_info *service;
	subscription sub_copy;
	notify_thread_struct *in = (notify_thread_struct *) input;
	int return_code;
	struct Handle_Info *handle_info;
	ThreadPoolJob job;

	memset(&job, 0, sizeof(job));

	/* This should be a HandleLock and not a HandleReadLock otherwise if there
	 * is a lot of notifications, then multiple threads will acquire a read
	 * lock and the thread which sends the notification will be blocked forever
	 * on the HandleLock at the end of this function. */
	/*HandleReadLock(); */
	HandleLock();
	/* validate context */

	if (GetHandleInfo(in->device_handle, &handle_info) != HND_DEVICE) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}

	if (!(service = FindServiceId(&handle_info->ServiceTable, in->servId, in->UDN)) ||
	    !service->active ||
	    !(sub = GetSubscriptionSID(in->sid, service)) ||
	    copy_subscription(sub, &sub_copy) != HTTP_SUCCESS) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}
#ifdef UPNP_ENABLE_NOTIFICATION_REORDERING
	/*If the event is out of order push it back to the job queue */
	if (in->eventKey != sub->ToSendEventKey) {
		TPJobInit(&job, (start_routine) genaNotifyThread, input);
		TPJobSetFreeFunction(&job, (free_function) free_notify_struct);
		TPJobSetPriority(&job, MED_PRIORITY);
		/* Sleep a little before creating another thread otherwise if there is
		 * a lot of notifications to send, the device will take 100% of the CPU
		 * to create threads and push them back to the job queue. */
		imillisleep(1);
		ThreadPoolAdd(&gSendThreadPool, &job, NULL);
		freeSubscription(&sub_copy);
		HandleUnlock();
		return;
	}
#endif

	HandleUnlock();

	/* send the notify */
	return_code = genaNotify(in->headers, in->propertySet, &sub_copy);
	freeSubscription(&sub_copy);
	HandleLock();
	if (GetHandleInfo(in->device_handle, &handle_info) != HND_DEVICE) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}
	/* validate context */
	if (!(service = FindServiceId(&handle_info->ServiceTable, in->servId, in->UDN)) ||
	    !service->active ||
	    !(sub = GetSubscriptionSID(in->sid, service))) {
		free_notify_struct(in);
		HandleUnlock();
		return;
	}
	sub->ToSendEventKey++;
	if (sub->ToSendEventKey < 0)
		/* wrap to 1 for overflow */
		sub->ToSendEventKey = 1;
	if (return_code == GENA_E_NOTIFY_UNACCEPTED_REMOVE_SUB)
		RemoveSubscriptionSID(in->sid, service);
	free_notify_struct(in);

	HandleUnlock();
}