函数逻辑报告

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v5.5.9

Brick Technologies Co., Ltd

Source Code:ipc\sem.c Create Date:2022-07-27 18:19:09
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：wake_const_ops - wake up non-alter tasks*@sma: semaphore array.*@semnum: semaphore that was modified.*@wake_q: lockless wake-queue head.* wake_const_ops must be called after a semaphore in a semaphore array* was set to 0

函数原型：static int wake_const_ops(struct sem_array *sma, int semnum, struct wake_q_head *wake_q)

返回类型：int

参数：

类型参数名称
struct sem_array *sma
intsemnum
struct wake_q_head *wake_q
840  semop_completed等于0
842  如果semnum恒等于负1则pending_list等于pending complex operations
844  否则pending_list等于pending single-sop operations
848  error等于perform_atomic_semop(sma, q)
850  如果error大于0则继续下一循环
853  unlink_queue(sma, q)
855  wake_up_sem_queue_prepare(q, error, wake_q)
856  如果error恒等于0则semop_completed等于1
860  返回:semop_completed
调用者
名称描述
do_smart_wakeup_zerodo_smart_wakeup_zero - wakeup all wait for zero tasks*@sma: semaphore array*@sops: operations that were performed*@nsops: number of operations*@wake_q: lockless wake-queue head* Checks all required queue for wait-for-zero operations, based