readers_active

函数名称：Return true if the modular sum of the sem->read_count per-CPU variable is* zero. If this sum is zero, then it is stable due to the fact that if any* newly arriving readers increment a given counter, they will immediately* decrement that same counter.

函数原型：static bool readers_active_check(struct percpu_rw_semaphore *sem)

返回类型：bool

参数：

类型	参数	名称
struct percpu_rw_semaphore *	sem

130

如果per_cpu_sum( * read_count)不等于0则返回:false

138

smp_mb()

140

返回:true

**调用者**
名称	描述
percpu_down_write

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