MPSC Lockfree Queue API

Multiple Producer Single Consumer (MPSC) Lockfree Queue API. More...

Files
file	mpsc_lockfree.h
	A wait-free intrusive multi producer single consumer (MPSC) queue using a singly linked list.

Data Structures
struct	mpsc_node
	Queue member. More...
struct	mpsc
	MPSC Queue. More...

Macros
#define	mpsc_ptr_get(ptr)   ptr
#define	mpsc_ptr_set(ptr, val)   ptr = val
#define	mpsc_ptr_set_get(ptr, val)
#define	MPSC_INIT(symbol)
	Static initializer for a mpsc queue.

Typedefs
typedef struct mpsc_node *	mpsc_ptr_t

Functions
static void	mpsc_init (struct mpsc *q)
	Initialize queue.
static ALWAYS_INLINE void	mpsc_push (struct mpsc *q, struct mpsc_node *n)
	Push a node.
static struct mpsc_node *	mpsc_pop (struct mpsc *q)
	Pop a node off of the list.

Detailed Description

Multiple Producer Single Consumer (MPSC) Lockfree Queue API.

Macro Definition Documentation

MPSC_INIT

#define MPSC_INIT

(

symbol

)

#include <include/zephyr/sys/mpsc_lockfree.h>

Value:

        {                                                                                          \
                .head = (struct mpsc_node *)&symbol.stub,                                          \
                .tail = (struct mpsc_node *)&symbol.stub,                                          \
                .stub = {                                                                          \
                        .next = NULL,                                                              \
                },                                                                                 \
        }

Static initializer for a mpsc queue.

Since the queue is

Parameters

symbol

name of the queue

mpsc_ptr_get

#define mpsc_ptr_get

(

ptr

)

ptr

#include <include/zephyr/sys/mpsc_lockfree.h>

mpsc_ptr_set

#define mpsc_ptr_set	(		ptr,
			val
	)		ptr = val

#include <include/zephyr/sys/mpsc_lockfree.h>

mpsc_ptr_set_get

#define mpsc_ptr_set_get	(		ptr,
			val
	)

#include <include/zephyr/sys/mpsc_lockfree.h>

Value:

        ({                                                                                         \
                mpsc_ptr_t tmp = ptr;                                                              \
                ptr = val;                                                                         \
                tmp;                                                                               \
        })

Typedef Documentation

mpsc_ptr_t

typedef struct mpsc_node* mpsc_ptr_t

#include <include/zephyr/sys/mpsc_lockfree.h>

Function Documentation

mpsc_init()

static void mpsc_init ( struct mpsc *  q )

inlinestatic

#include <include/zephyr/sys/mpsc_lockfree.h>

Initialize queue.

Parameters

q	Queue to initialize or reset

mpsc_pop()

static struct mpsc_node * mpsc_pop ( struct mpsc *  q )

inlinestatic

#include <include/zephyr/sys/mpsc_lockfree.h>

Pop a node off of the list.

Return values

NULL	When no node is available
node	When node is available

mpsc_push()

static ALWAYS_INLINE void mpsc_push ( struct mpsc *  q, struct mpsc_node *  n  )

static

#include <include/zephyr/sys/mpsc_lockfree.h>

Push a node.

Parameters

q	Queue to push the node to
n	Node to push into the queue