refcount_dec_and_lock

函数名称：_dec_and_lock_irqsave - return holding spinlock with disabled* interrupts if able to decrement refcount to 0*@r: the refcount*@lock: the spinlock to be locked*@flags: saved IRQ-flags if the is acquired* Same as refcount_dec_and_lock() above except that

函数原型：bool refcount_dec_and_lock_irqsave(refcount_t *r, spinlock_t *lock, unsigned long *flags)

返回类型：bool

参数：

类型	参数	名称
refcount_t *	r
spinlock_t *	lock
unsigned long *	flags

175

如果_dec_not_one - decrement a refcount if it is not 1*@r: the refcount* No atomic_t counterpart, it decrements unless the value is 1, in which case* it will return false则返回:false

178

spin_lock_irqsave(lock, * flags)

179

如果非_dec_and_test - decrement a refcount and test if it is 0*@r: the refcount* Similar to atomic_dec_and_test(), it will WARN on underflow and fail to* decrement when saturated at REFCOUNT_SATURATED则

180

spin_unlock_irqrestore(lock, * flags)

181

返回:false

184

返回:true

**调用者**
名称	描述
free_uid

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