LOS_QueueCreate

LOS_QueueCreate

Queue

UINT32 LOS_QueueCreate	(	CHAR *	pcQueueName,
		UINT16	usLen,
		UINT32 *	puwQueueID,
		UINT32	uwFlags,
		UINT16	usMaxMsgSize
	)

Create a message queue.

Description:: This API is used to create a message queue.

注意:

Threre are LOSCFG_BASE_IPC_QUEUE_LIMIT queues available, change it's value when necessory.

参数:

	参数名称	描述
	pcQueueName	[IN] Message queue name. Reserved parameter, not used for now.
	usLen	[IN] Queue length. The value range is [1,0xffff].
	puwQueueID	[OUT] ID of the queue control structure that is successfully created.
	uwFlags	[IN] Queue mode. Reserved parameter, not used for now.
	usMaxMsgSize	[IN] Node size. The value range is [1,0xffff-4].

返回值:

	返回值	描述
	LOS_OK	The message queue is successfully created.
	LOS_ERRNO_QUEUE_CB_UNAVAILABLE	The upper limit of the number of created queues is exceeded.
	LOS_ERRNO_QUEUE_CREATE_NO_MEMORY	Insufficient memory for queue creation.
	LOS_ERRNO_QUEUE_CREAT_PTR_NULL	Null pointer, puwQueueID is NULL.
	LOS_ERRNO_QUEUE_PARA_ISZERO	The queue length or message node size passed in during queue creation is 0.
	LOS_ERRNO_QUEUE_SIZE_TOO_BIG	The parameter usMaxMsgSize is larger than 0xffff - 4.

Dependency:

los_queue.h: the header file that contains the API declaration.

参见:: LOS_QueueDelete

自从:: Huawei LiteOS V100R001C00