#include <rte_ring_hts_c11_mem.h>

Functions
static __rte_experimental __rte_always_inline unsigned int	rte_ring_mp_hts_enqueue_bulk_elem (struct rte_ring r, const void obj_table, unsigned int esize, unsigned int n, unsigned int *free_space)

static __rte_experimental __rte_always_inline unsigned int	rte_ring_mc_hts_dequeue_bulk_elem (struct rte_ring r, void obj_table, unsigned int esize, unsigned int n, unsigned int *available)

static __rte_experimental __rte_always_inline unsigned	rte_ring_mp_hts_enqueue_burst_elem (struct rte_ring r, const void obj_table, unsigned int esize, unsigned int n, unsigned int *free_space)

static __rte_experimental __rte_always_inline unsigned	rte_ring_mc_hts_dequeue_burst_elem (struct rte_ring r, void obj_table, unsigned int esize, unsigned int n, unsigned int *available)

static __rte_experimental __rte_always_inline unsigned int	rte_ring_mp_hts_enqueue_bulk (struct rte_ring r, void const obj_table, unsigned int n, unsigned int free_space)

static __rte_experimental __rte_always_inline unsigned int	rte_ring_mc_hts_dequeue_bulk (struct rte_ring r, void obj_table, unsigned int n, unsigned int available)

static __rte_experimental __rte_always_inline unsigned	rte_ring_mp_hts_enqueue_burst (struct rte_ring r, void const obj_table, unsigned int n, unsigned int free_space)

static __rte_experimental __rte_always_inline unsigned	rte_ring_mc_hts_dequeue_burst (struct rte_ring r, void obj_table, unsigned int n, unsigned int available)

Detailed Description

EXPERIMENTAL: this API may change without prior notice It is not recommended to include this file directly. Please include <rte_ring.h> instead.

Contains functions for serialized, aka Head-Tail Sync (HTS) ring mode. In that mode enqueue/dequeue operation is fully serialized: at any given moment only one enqueue/dequeue operation can proceed. This is achieved by allowing a thread to proceed with changing head.value only when head.value == tail.value. Both head and tail values are updated atomically (as one 64-bit value). To achieve that 64-bit CAS is used by head update routine.

Definition in file rte_ring_hts.h.

Function Documentation

static __rte_experimental __rte_always_inline unsigned int rte_ring_mp_hts_enqueue_bulk_elem	(	struct rte_ring *	r,
		const void *	obj_table,
		unsigned int	esize,
		unsigned int	n,
		unsigned int *	free_space
	)

static

Enqueue several objects on the HTS ring (multi-producers safe).

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of objects.
esize	The size of ring element, in bytes. It must be a multiple of 4. This must be the same value used while creating the ring. Otherwise the results are undefined.
n	The number of objects to add in the ring from the obj_table.
free_space	if non-NULL, returns the amount of space in the ring after the enqueue operation has finished.

Returns: The number of objects enqueued, either 0 or n

Definition at line 137 of file rte_ring_hts.h.

static __rte_experimental __rte_always_inline unsigned int rte_ring_mc_hts_dequeue_bulk_elem	(	struct rte_ring *	r,
		void *	obj_table,
		unsigned int	esize,
		unsigned int	n,
		unsigned int *	available
	)

static

Dequeue several objects from an HTS ring (multi-consumers safe).

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of objects that will be filled.
esize	The size of ring element, in bytes. It must be a multiple of 4. This must be the same value used while creating the ring. Otherwise the results are undefined.
n	The number of objects to dequeue from the ring to the obj_table.
available	If non-NULL, returns the number of remaining ring entries after the dequeue has finished.

Returns: The number of objects dequeued, either 0 or n

Definition at line 165 of file rte_ring_hts.h.

static __rte_experimental __rte_always_inline unsigned rte_ring_mp_hts_enqueue_burst_elem	(	struct rte_ring *	r,
		const void *	obj_table,
		unsigned int	esize,
		unsigned int	n,
		unsigned int *	free_space
	)

static

Enqueue several objects on the HTS ring (multi-producers safe).

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of objects.
esize	The size of ring element, in bytes. It must be a multiple of 4. This must be the same value used while creating the ring. Otherwise the results are undefined.
n	The number of objects to add in the ring from the obj_table.
free_space	if non-NULL, returns the amount of space in the ring after the enqueue operation has finished.

Returns

n: Actual number of objects enqueued.

Definition at line 193 of file rte_ring_hts.h.

static __rte_experimental __rte_always_inline unsigned rte_ring_mc_hts_dequeue_burst_elem	(	struct rte_ring *	r,
		void *	obj_table,
		unsigned int	esize,
		unsigned int	n,
		unsigned int *	available
	)

static

Dequeue several objects from an HTS ring (multi-consumers safe). When the requested objects are more than the available objects, only dequeue the actual number of objects.

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of objects that will be filled.
esize	The size of ring element, in bytes. It must be a multiple of 4. This must be the same value used while creating the ring. Otherwise the results are undefined.
n	The number of objects to dequeue from the ring to the obj_table.
available	If non-NULL, returns the number of remaining ring entries after the dequeue has finished.

Returns

n: Actual number of objects dequeued, 0 if ring is empty

Definition at line 223 of file rte_ring_hts.h.

static __rte_experimental __rte_always_inline unsigned int rte_ring_mp_hts_enqueue_bulk	(	struct rte_ring *	r,
		void const	obj_table,
		unsigned int	n,
		unsigned int *	free_space
	)

static

Enqueue several objects on the HTS ring (multi-producers safe).

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of void * pointers (objects).
n	The number of objects to add in the ring from the obj_table.
free_space	if non-NULL, returns the amount of space in the ring after the enqueue operation has finished.

Returns: The number of objects enqueued, either 0 or n

Definition at line 247 of file rte_ring_hts.h.

static __rte_experimental __rte_always_inline unsigned int rte_ring_mc_hts_dequeue_bulk	(	struct rte_ring *	r,
		void **	obj_table,
		unsigned int	n,
		unsigned int *	available
	)

static

Dequeue several objects from an HTS ring (multi-consumers safe).

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of void * pointers (objects) that will be filled.
n	The number of objects to dequeue from the ring to the obj_table.
available	If non-NULL, returns the number of remaining ring entries after the dequeue has finished.

Returns: The number of objects dequeued, either 0 or n

Definition at line 271 of file rte_ring_hts.h.

static __rte_experimental __rte_always_inline unsigned rte_ring_mp_hts_enqueue_burst	(	struct rte_ring *	r,
		void const	obj_table,
		unsigned int	n,
		unsigned int *	free_space
	)

static

Enqueue several objects on the HTS ring (multi-producers safe).

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of void * pointers (objects).
n	The number of objects to add in the ring from the obj_table.
free_space	if non-NULL, returns the amount of space in the ring after the enqueue operation has finished.

Returns

n: Actual number of objects enqueued.

Definition at line 295 of file rte_ring_hts.h.

static __rte_experimental __rte_always_inline unsigned rte_ring_mc_hts_dequeue_burst	(	struct rte_ring *	r,
		void **	obj_table,
		unsigned int	n,
		unsigned int *	available
	)

static

Dequeue several objects from an HTS ring (multi-consumers safe). When the requested objects are more than the available objects, only dequeue the actual number of objects.

Parameters

r	A pointer to the ring structure.
obj_table	A pointer to a table of void * pointers (objects) that will be filled.
n	The number of objects to dequeue from the ring to the obj_table.
available	If non-NULL, returns the number of remaining ring entries after the dequeue has finished.

Returns

n: Actual number of objects dequeued, 0 if ring is empty

Definition at line 321 of file rte_ring_hts.h.

Functions

Detailed Description

Function Documentation