Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-06-08 01:42:58 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Feature: implement ticket spinlock

Browse Source 
test config: ./tools/configure.sh -l qemu-armv8a:nsh_smp

Pass ostest

No matter big-endian or little-endian, ticket spinlock only check the
next and the owner is equal or not.

If they are equal, it means there is a task hold the lock or lock is
free.

Signed-off-by: TaiJu Wu <tjwu1217@gmail.com>

Co-authored-by: Xiang Xiao <xiaoxiang781216@gmail.com>
This commit is contained in:
TaiJu Wu
2023-10-05 19:19:08 +00:00
committed by Xiang Xiao
parent 643b9c1abf
commit ffba0d15a5
7 changed files with 119 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/nuttx/spinlock.h
+29 -4
View File
@@ -39,6 +39,24 @@
typedef uint8_t spinlock_t;
#else
#ifdef CONFIG_TICKET_SPINLOCK
union spinlock_u
{
struct
{
uint16_t owner;
uint16_t next;
} tickets;
uint32_t value;
};
typedef union spinlock_u spinlock_t;
# define SP_UNLOCKED (union spinlock_u){{0, 0}}
# define SP_LOCKED (union spinlock_u){{0, 1}}
#else
/* The architecture specific spinlock.h header file must also provide the
* following:
*
@@ -51,6 +69,8 @@ typedef uint8_t spinlock_t;
#include <arch/spinlock.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
@@ -80,7 +100,8 @@ typedef uint8_t spinlock_t;
# define SP_SEV()
#endif
#if defined(CONFIG_SCHED_INSTRUMENTATION_SPINLOCKS) && !defined(__SP_UNLOCK_FUNCTION)
#if !defined(__SP_UNLOCK_FUNCTION) && (defined(CONFIG_TICKET_SPINLOCK) || \
defined(CONFIG_SCHED_INSTRUMENTATION_SPINLOCKS))
# define __SP_UNLOCK_FUNCTION 1
#endif
@@ -199,7 +220,7 @@ void spin_lock_wo_note(FAR volatile spinlock_t *lock);
*
****************************************************************************/
spinlock_t spin_trylock(FAR volatile spinlock_t *lock);
bool spin_trylock(FAR volatile spinlock_t *lock);
/****************************************************************************
* Name: spin_trylock_wo_note
@@ -223,7 +244,7 @@ spinlock_t spin_trylock(FAR volatile spinlock_t *lock);
*
****************************************************************************/
spinlock_t spin_trylock_wo_note(FAR volatile spinlock_t *lock);
bool spin_trylock_wo_note(FAR volatile spinlock_t *lock);
/****************************************************************************
* Name: spin_unlock
@@ -285,7 +306,11 @@ void spin_unlock_wo_note(FAR volatile spinlock_t *lock);
****************************************************************************/
/* bool spin_islocked(FAR spinlock_t lock); */
#define spin_islocked(l) (*(l) == SP_LOCKED)
#ifdef CONFIG_TICKET_SPINLOCK
# define spin_islocked(l) ((*l).tickets.owner != (*l).tickets.next)
#else
# define spin_islocked(l) (*(l) == SP_LOCKED)
#endif
/****************************************************************************
* Name: spin_setbit