Queue RPC queue_server

This is a userspace implementation of queues that can be used across processes. More...

Data Structures
struct	QueueInterface
	Queue object interface. More...
struct	QueueObject
struct	QueueServiceInterface
	Queue Service interface. More...
struct	QueueService
	Queue Server internals. More...

Macros
#define	QUEUES_ALLOCATED   4

Typedefs
typedef uint8_t	queue_id_t

Variables
struct QueueService *	queue_server
	Queue server instance for RPC calls.

Detailed Description

This is a userspace implementation of queues that can be used across processes.

CMRX does not offer queues as a standard syscall, unlike other RTOSes.

If an application wants to use queues, it needs to include the queue server in the build. This is done by calling:

target_add_applications(<firmware> queue_server)

into CMakeLists.txt.

This will include the queue server and enable services described in this document.

Queue server behaves as a pretty standard remote procedure call server. You need a server instance in order to be able to work with queues. Queue server always creates one publicly available instance.

Application can call queue service to create a new queue such as:

rpc_call(queue_server, create, ...)

This will create new queue which can be used to call methods like send and receive.

Macro Definition Documentation

QUEUES_ALLOCATED

#define QUEUES_ALLOCATED   4

Typedef Documentation

queue_id_t

typedef uint8_t queue_id_t

Variable Documentation

queue_server

struct QueueService* queue_server

extern

Queue server instance for RPC calls.

This is publicly available instance of queue server. You can use it to call rpc_call() using interface defined in QueueServiceInterface.