xref: /illumos-gate/usr/src/uts/common/fs/zfs/sys/zthr.h (revision 8dfe5547fbf0979fc1065a8b6fddc1e940a7cf4f)
1 /*
2  * CDDL HEADER START
3  *
4  * This file and its contents are supplied under the terms of the
5  * Common Development and Distribution License ("CDDL"), version 1.0.
6  * You may only use this file in accordance with the terms of version
7  * 1.0 of the CDDL.
8  *
9  * A full copy of the text of the CDDL should have accompanied this
10  * source. A copy of the CDDL is also available via the Internet at
11  * http://www.illumos.org/license/CDDL.
12  *
13  * CDDL HEADER END
14  */
15 
16 /*
17  * Copyright (c) 2017 by Delphix. All rights reserved.
18  */
19 
20 #ifndef _SYS_ZTHR_H
21 #define	_SYS_ZTHR_H
22 
23 typedef struct zthr zthr_t;
24 typedef int (zthr_func_t)(void *, zthr_t *);
25 typedef boolean_t (zthr_checkfunc_t)(void *, zthr_t *);
26 
27 struct zthr {
28 	kthread_t	*zthr_thread;
29 	kmutex_t	zthr_lock;
30 	kcondvar_t	zthr_cv;
31 	boolean_t	zthr_cancel;
32 	hrtime_t	zthr_wait_time;
33 
34 	zthr_checkfunc_t	*zthr_checkfunc;
35 	zthr_func_t	*zthr_func;
36 	void		*zthr_arg;
37 	int		zthr_rc;
38 };
39 
40 extern zthr_t *zthr_create(zthr_checkfunc_t checkfunc,
41     zthr_func_t *func, void *arg);
42 extern zthr_t *zthr_create_timer(zthr_checkfunc_t *checkfunc,
43     zthr_func_t *func, void *arg, hrtime_t nano_wait);
44 
45 extern void zthr_exit(zthr_t *t, int rc);
46 extern void zthr_destroy(zthr_t *t);
47 
48 extern void zthr_wakeup(zthr_t *t);
49 extern int zthr_cancel(zthr_t *t);
50 extern void zthr_resume(zthr_t *t);
51 
52 extern boolean_t zthr_iscancelled(zthr_t *t);
53 extern boolean_t zthr_isrunning(zthr_t *t);
54 
55 #endif /* _SYS_ZTHR_H */
56