rte_ticketlock.h File Reference

#include <rte_common.h>
#include <rte_lcore.h>
#include <rte_pause.h>
#include <rte_stdatomic.h>

Go to the source code of this file.

Data Structures
union	rte_ticketlock_t

Macros
#define	RTE_TICKETLOCK_INITIALIZER   { 0 }
#define	TICKET_LOCK_INVALID_ID   -1
#define	RTE_TICKETLOCK_RECURSIVE_INITIALIZER

Functions
static void	rte_ticketlock_init (rte_ticketlock_t *tl)
static void	rte_ticketlock_lock (rte_ticketlock_t *tl)
static void	rte_ticketlock_unlock (rte_ticketlock_t *tl)
static int	rte_ticketlock_trylock (rte_ticketlock_t *tl)
static int	rte_ticketlock_is_locked (rte_ticketlock_t *tl)
static void	rte_ticketlock_recursive_init (rte_ticketlock_recursive_t *tlr)
static void	rte_ticketlock_recursive_lock (rte_ticketlock_recursive_t *tlr)
static void	rte_ticketlock_recursive_unlock (rte_ticketlock_recursive_t *tlr)
static int	rte_ticketlock_recursive_trylock (rte_ticketlock_recursive_t *tlr)

Detailed Description

RTE ticket locks

This file defines an API for ticket locks, which give each waiting thread a ticket and take the lock one by one, first come, first serviced.

All locks must be initialised before use, and only initialised once.

Definition in file rte_ticketlock.h.

Macro Definition Documentation

RTE_TICKETLOCK_INITIALIZER

#define RTE_TICKETLOCK_INITIALIZER   { 0 }

A static ticketlock initializer.

Definition at line 43 of file rte_ticketlock.h.

TICKET_LOCK_INVALID_ID

#define TICKET_LOCK_INVALID_ID   -1

The rte_ticketlock_recursive_t type.

Definition at line 128 of file rte_ticketlock.h.

RTE_TICKETLOCK_RECURSIVE_INITIALIZER

#define RTE_TICKETLOCK_RECURSIVE_INITIALIZER

Value:

{RTE_TICKETLOCK_INITIALIZER, \
                          TICKET_LOCK_INVALID_ID, 0}

A static recursive ticketlock initializer.

Definition at line 139 of file rte_ticketlock.h.

Function Documentation

rte_ticketlock_init()

static void rte_ticketlock_init ( rte_ticketlock_t *  tl )

inlinestatic

Initialize the ticketlock to an unlocked state.

Parameters

tl	A pointer to the ticketlock.

Definition at line 52 of file rte_ticketlock.h.

rte_ticketlock_lock()

static void rte_ticketlock_lock ( rte_ticketlock_t *  tl )

inlinestatic

Take the ticketlock.

Parameters

tl	A pointer to the ticketlock.

Definition at line 64 of file rte_ticketlock.h.

rte_ticketlock_unlock()

static void rte_ticketlock_unlock ( rte_ticketlock_t *  tl )

inlinestatic

Release the ticketlock.

Parameters

tl	A pointer to the ticketlock.

Definition at line 78 of file rte_ticketlock.h.

rte_ticketlock_trylock()

static int rte_ticketlock_trylock ( rte_ticketlock_t *  tl )

inlinestatic

Try to take the lock.

Parameters

tl	A pointer to the ticketlock.

Returns

1 if the lock is successfully taken; 0 otherwise.

Definition at line 93 of file rte_ticketlock.h.

rte_ticketlock_is_locked()

static int rte_ticketlock_is_locked ( rte_ticketlock_t *  tl )

inlinestatic

Test if the lock is taken.

Parameters

tl	A pointer to the ticketlock.

Returns

1 if the lock is currently taken; 0 otherwise.

Definition at line 118 of file rte_ticketlock.h.

rte_ticketlock_recursive_init()

static void rte_ticketlock_recursive_init ( rte_ticketlock_recursive_t *  tlr )

inlinestatic

Initialize the recursive ticketlock to an unlocked state.

Parameters

tlr	A pointer to the recursive ticketlock.

Definition at line 149 of file rte_ticketlock.h.

rte_ticketlock_recursive_lock()

static void rte_ticketlock_recursive_lock ( rte_ticketlock_recursive_t *  tlr )

inlinestatic

Take the recursive ticketlock.

Parameters

tlr	A pointer to the recursive ticketlock.

Definition at line 163 of file rte_ticketlock.h.

rte_ticketlock_recursive_unlock()

static void rte_ticketlock_recursive_unlock ( rte_ticketlock_recursive_t *  tlr )

inlinestatic

Release the recursive ticketlock.

Parameters

tlr	A pointer to the recursive ticketlock.

Definition at line 181 of file rte_ticketlock.h.

rte_ticketlock_recursive_trylock()

static int rte_ticketlock_recursive_trylock ( rte_ticketlock_recursive_t *  tlr )

inlinestatic

Try to take the recursive lock.

Parameters

tlr	A pointer to the recursive ticketlock.

Returns

1 if the lock is successfully taken; 0 otherwise.

Definition at line 199 of file rte_ticketlock.h.