down_interruptible

函数名称：down_interruptible - acquire the semaphore unless interrupted*@sem: the semaphore to be acquired* Attempts to acquire the semaphore. If no more tasks are allowed to* acquire the semaphore, calling this function will put the task to sleep.

函数原型：int down_interruptible(struct semaphore *sem)

返回类型：int

参数：

类型	参数	名称
struct semaphore *	sem

result等于0

raw_spin_lock_irqsave( & lock, flags)

如果此条件成立可能性大(为编译器优化)(count > 0)则count自减

否则result等于__down_interruptible(sem)

raw_spin_unlock_irqrestore( & lock, flags)

返回:result

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告