refcount_add_not

函数名称：_add_not_zero - add a value to a refcount unless it is 0*@i: the value to add to the refcount*@r: the refcount* Will saturate at REFCOUNT_SATURATED and WARN.* Provides no memory ordering, it is assumed the caller has guaranteed the

函数原型：static inline __must_check bool refcount_add_not_zero(int i, refcount_t *r)

返回类型：bool

参数：

类型	参数	名称
int	i
refcount_t *	r

157

old等于_read - get a refcount's value*@r: the refcount* Return: the refcount's value

159

循环

160

如果非old则退出

162

当非atomic_try_cmpxchg_relaxed( & refs, & old, old + i)循环

164

如果此条件成立可能性小(为编译器优化)(old < 0 || old + i < 0)则refcount_warn_saturate(r, REFCOUNT_ADD_NOT_ZERO_OVF)

167

返回:old

**调用者**
名称	描述
refcount_inc_not_zero	_inc_not_zero - increment a refcount unless it is 0@r: the refcount to increment Similar to atomic_inc_not_zero(), but will saturate at REFCOUNT_SATURATED* and WARN.* Provides no memory ordering, it is assumed the caller has guaranteed the

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