| Function report | 
| Source Code: ipc\sem.c | Create Date:2022-07-28 16:43:53 | 
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick | 
| home page | Tree | 
| Annotation kernel can get tool activity | Download SCCT | Chinese | 
Name:heck_restart(sma, q)*@sma: semaphore array*@q: the operation that just completed* update_queue is O(N^2) when it restarts scanning the whole queue of* waiting operations. Therefore this function checks if the restart is* really necessary
Proto:static inline int check_restart(struct sem_array *sma, struct sem_queue *q)
Type:int
Parameter:
| Type | Parameter | Name | 
|---|---|---|
| struct sem_array * | sma | |
| struct sem_queue * | q | 
| 800 | If Not list_empty - tests whether a list is empty*@head: the list to test. Then Return 1 | 
| 804 | If umber of operations > 1 Then Return 1 | 
| 818 | Return 0 | 
| Name | Describe | 
|---|---|
| update_queue | pdate_queue - look for tasks that can be completed.*@sma: semaphore array.*@semnum: semaphore that was modified.*@wake_q: lockless wake-queue head.* update_queue must be called after a semaphore in a semaphore array* was modified | 
| Source code conversion tool public plug-in interface | X | 
|---|---|
| Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |