xref: /illumos-gate/usr/src/uts/common/fs/zfs/sys/zthr.h (revision b66926aad422ad350796a2770d6b2d328a63b92c)
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 /*
18  * Copyright (c) 2017 by Delphix. All rights reserved.
19  */
20 
21 #ifndef _SYS_ZTHR_H
22 #define	_SYS_ZTHR_H
23 
24 typedef struct zthr zthr_t;
25 typedef int (zthr_func_t)(void *, zthr_t *);
26 typedef boolean_t (zthr_checkfunc_t)(void *, zthr_t *);
27 
28 struct zthr {
29 	kthread_t	*zthr_thread;
30 	kmutex_t	zthr_lock;
31 	kcondvar_t	zthr_cv;
32 	boolean_t	zthr_cancel;
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 void zthr_exit(zthr_t *t, int rc);
43 extern void zthr_destroy(zthr_t *t);
44 
45 extern void zthr_wakeup(zthr_t *t);
46 extern int zthr_cancel(zthr_t *t);
47 extern void zthr_resume(zthr_t *t);
48 
49 extern boolean_t zthr_iscancelled(zthr_t *t);
50 extern boolean_t zthr_isrunning(zthr_t *t);
51 
52 #endif /* _SYS_ZTHR_H */
53