4 #include <linux/atomic.h>
5 #include <linux/rcupdate.h>
6 #include <linux/cache.h>
7 #include <uapi/linux/sem.h>
11 /* One sem_array data structure for each set of semaphores in the system. */
13 struct kern_ipc_perm sem_perm; /* permissions .. see ipc.h */
14 time_t sem_ctime; /* last change time */
15 struct sem *sem_base; /* ptr to first semaphore in array */
16 struct list_head pending_alter; /* pending operations */
17 /* that alter the array */
18 struct list_head pending_const; /* pending complex operations */
19 /* that do not alter semvals */
20 struct list_head list_id; /* undo requests on this array */
21 int sem_nsems; /* no. of semaphores in array */
22 int complex_count; /* pending complex operations */
23 unsigned int use_global_lock;/* >0: global lock required */
29 struct sem_undo_list *undo_list;
32 extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
33 extern void exit_sem(struct task_struct *tsk);
41 static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
46 static inline void exit_sem(struct task_struct *tsk)
52 #endif /* _LINUX_SEM_H */