1 /* 2 * Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 * 5 * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved. 6 * Distributed under the terms of the NewOS License. 7 */ 8 #ifndef KERNEL_SEM_H 9 #define KERNEL_SEM_H 10 11 12 #include <OS.h> 13 #include <thread.h> 14 15 16 struct kernel_args; 17 struct select_info; 18 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 extern status_t haiku_sem_init(struct kernel_args *args); 25 extern void sem_delete_owned_sems(Team* team); 26 extern int32 sem_used_sems(void); 27 extern int32 sem_max_sems(void); 28 29 extern status_t select_sem(int32 object, struct select_info *info, bool kernel); 30 extern status_t deselect_sem(int32 object, struct select_info *info, 31 bool kernel); 32 33 extern sem_id create_sem_etc(int32 count, const char *name, team_id owner); 34 35 extern const char* sem_get_name_unsafe(sem_id id); 36 37 /* user calls */ 38 sem_id _user_create_sem(int32 count, const char *name); 39 status_t _user_delete_sem(sem_id id); 40 status_t _user_acquire_sem(sem_id id); 41 status_t _user_acquire_sem_etc(sem_id id, int32 count, uint32 flags, bigtime_t timeout); 42 status_t _user_switch_sem(sem_id releaseSem, sem_id id); 43 status_t _user_switch_sem_etc(sem_id releaseSem, sem_id id, int32 count, uint32 flags, bigtime_t timeout); 44 status_t _user_release_sem(sem_id id); 45 status_t _user_release_sem_etc(sem_id id, int32 count, uint32 flags); 46 status_t _user_get_sem_count(sem_id id, int32* thread_count); 47 status_t _user_get_sem_info(sem_id, struct sem_info *, size_t); 48 status_t _user_get_next_sem_info(team_id, int32 *, struct sem_info *, size_t); 49 status_t _user_set_sem_owner(sem_id id, team_id team); 50 51 #ifdef __cplusplus 52 } 53 #endif 54 55 #endif /* KERNEL_SEM_H */ 56