1 /* 2 ** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved. 3 ** Distributed under the terms of the NewOS License. 4 */ 5 #ifndef KERNEL_SEM_H 6 #define KERNEL_SEM_H 7 8 #include <OS.h> 9 #include <thread.h> 10 11 12 struct kernel_args; 13 14 15 /* user calls */ 16 sem_id user_create_sem(int32 count, const char *name); 17 status_t user_delete_sem(sem_id id); 18 status_t user_delete_sem_etc(sem_id id, status_t return_code, bool interrupted); 19 status_t user_acquire_sem(sem_id id); 20 status_t user_acquire_sem_etc(sem_id id, int32 count, uint32 flags, bigtime_t timeout); 21 status_t user_release_sem(sem_id id); 22 status_t user_release_sem_etc(sem_id id, int32 count, uint32 flags); 23 status_t user_get_sem_count(sem_id id, int32* thread_count); 24 status_t user_get_sem_info(sem_id, struct sem_info *, size_t); 25 status_t user_get_next_sem_info(team_id, int32 *, struct sem_info *, size_t); 26 status_t user_set_sem_owner(sem_id id, team_id team); 27 28 /* kernel calls */ 29 extern sem_id create_sem_etc(int32 count, const char *name, team_id owner); 30 extern status_t sem_init(struct kernel_args *ka); 31 extern int sem_delete_owned_sems(team_id owner); 32 extern status_t sem_interrupt_thread(struct thread *t); 33 34 #endif /* KERNEL_SEM_H */ 35