自旋锁

结构体
struct	aos_spinlock_t

类型定义
typedef long	aos_irqsave_t

函数
void	aos_spin_lock_init (aos_spinlock_t *spinlock)
void	aos_spin_lock (aos_spinlock_t *spinlock)
void	aos_spin_unlock (aos_spinlock_t *spinlock)
aos_irqsave_t	aos_spin_lock_irqsave (aos_spinlock_t *spinlock)
void	aos_spin_unlock_irqrestore (aos_spinlock_t *spinlock, aos_irqsave_t flag)

详细描述

提供AliOS Things系统内核自旋锁功能的基础API.

类型定义说明

aos_irqsave_t

typedef long aos_irqsave_t

在文件 kernel.h 第 183 行定义.

函数说明

aos_spin_lock()

void aos_spin_lock

(

aos_spinlock_t *

spinlock

)

Lock a spinlock.

参数

[in]

spinlock

spinlock object.

aos_spin_lock_init()

void aos_spin_lock_init

(

aos_spinlock_t *

spinlock

)

Init a spinlock.

参数

[in]

spinlock

pointer of spinlock object,spinlock object must be alloced.

aos_spin_lock_irqsave()

aos_irqsave_t aos_spin_lock_irqsave

(

aos_spinlock_t *

spinlock

)

Lock a spinlock in ISR.

参数

[in]

spinlock

spinlock object.

返回

CPSR value.

aos_spin_unlock()

void aos_spin_unlock

(

aos_spinlock_t *

spinlock

)

Unlock a spinlock.

参数

[in]

spinlock

spinlock object.

aos_spin_unlock_irqrestore()

void aos_spin_unlock_irqrestore	(	aos_spinlock_t *	spinlock,
		aos_irqsave_t	flag
	)

Unlock a spinlock in ISR.

参数

[in]	spinlock	spinlock object.
[in]	flag	CPSR value.