2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3 * Copyright (C) 2007 The Regents of the University of California.
4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
5 * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
8 * This file is part of the SPL, Solaris Porting Layer.
9 * For details, see <http://zfsonlinux.org/>.
11 * The SPL is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
16 * The SPL is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 * You should have received a copy of the GNU General Public License along
22 * with the SPL. If not, see <http://www.gnu.org/licenses/>.
25 #ifndef _SPL_CONDVAR_H
26 #define _SPL_CONDVAR_H
28 #include <linux/module.h>
30 #include <sys/mutex.h>
31 #include <sys/callo.h>
36 * The kcondvar_t struct is protected by mutex taken externally before
37 * calling any of the wait/signal funs, and passed into the wait funs.
39 #define CV_MAGIC 0x346545f4
40 #define CV_DESTROY 0x346545f5
44 spl_wait_queue_head_t cv_event;
45 spl_wait_queue_head_t cv_destroy;
51 typedef enum { CV_DEFAULT = 0, CV_DRIVER } kcv_type_t;
53 extern void __cv_init(kcondvar_t *, char *, kcv_type_t, void *);
54 extern void __cv_destroy(kcondvar_t *);
55 extern void __cv_wait(kcondvar_t *, kmutex_t *);
56 extern void __cv_wait_io(kcondvar_t *, kmutex_t *);
57 extern int __cv_wait_io_sig(kcondvar_t *, kmutex_t *);
58 extern int __cv_wait_sig(kcondvar_t *, kmutex_t *);
59 extern clock_t __cv_timedwait(kcondvar_t *, kmutex_t *, clock_t);
60 extern clock_t __cv_timedwait_io(kcondvar_t *, kmutex_t *, clock_t);
61 extern clock_t __cv_timedwait_sig(kcondvar_t *, kmutex_t *, clock_t);
62 extern clock_t cv_timedwait_hires(kcondvar_t *, kmutex_t *, hrtime_t,
63 hrtime_t res, int flag);
64 extern clock_t cv_timedwait_sig_hires(kcondvar_t *, kmutex_t *, hrtime_t,
65 hrtime_t res, int flag);
66 extern void __cv_signal(kcondvar_t *);
67 extern void __cv_broadcast(kcondvar_t *c);
69 #define cv_init(cvp, name, type, arg) __cv_init(cvp, name, type, arg)
70 #define cv_destroy(cvp) __cv_destroy(cvp)
71 #define cv_wait(cvp, mp) __cv_wait(cvp, mp)
72 #define cv_wait_io(cvp, mp) __cv_wait_io(cvp, mp)
73 #define cv_wait_io_sig(cvp, mp) __cv_wait_io_sig(cvp, mp)
74 #define cv_wait_sig(cvp, mp) __cv_wait_sig(cvp, mp)
75 #define cv_wait_interruptible(cvp, mp) cv_wait_sig(cvp, mp)
76 #define cv_timedwait(cvp, mp, t) __cv_timedwait(cvp, mp, t)
77 #define cv_timedwait_io(cvp, mp, t) __cv_timedwait_io(cvp, mp, t)
78 #define cv_timedwait_sig(cvp, mp, t) __cv_timedwait_sig(cvp, mp, t)
79 #define cv_timedwait_interruptible(cvp, mp, t) cv_timedwait_sig(cvp, mp, t)
80 #define cv_signal(cvp) __cv_signal(cvp)
81 #define cv_broadcast(cvp) __cv_broadcast(cvp)
83 #endif /* _SPL_CONDVAR_H */