1 /*****************************************************************************\
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/>.
23 \*****************************************************************************/
25 #ifndef _SPL_CONDVAR_H
26 #define _SPL_CONDVAR_H
28 #include <linux/module.h>
29 #include <linux/wait.h>
31 #include <sys/mutex.h>
34 * The kcondvar_t struct is protected by mutex taken externally before
35 * calling any of the wait/signal funs, and passed into the wait funs.
37 #define CV_MAGIC 0x346545f4
38 #define CV_DESTROY 0x346545f5
42 wait_queue_head_t cv_event
;
43 wait_queue_head_t cv_destroy
;
49 typedef enum { CV_DEFAULT
=0, CV_DRIVER
} kcv_type_t
;
51 extern void __cv_init(kcondvar_t
*cvp
, char *name
, kcv_type_t type
, void *arg
);
52 extern void __cv_destroy(kcondvar_t
*cvp
);
53 extern void __cv_wait(kcondvar_t
*cvp
, kmutex_t
*mp
);
54 extern void __cv_wait_io(kcondvar_t
*cvp
, kmutex_t
*mp
);
55 extern void __cv_wait_interruptible(kcondvar_t
*cvp
, kmutex_t
*mp
);
56 extern clock_t __cv_timedwait(kcondvar_t
*cvp
, kmutex_t
*mp
, clock_t exp_time
);
57 extern clock_t __cv_timedwait_interruptible(kcondvar_t
*cvp
, kmutex_t
*mp
,
59 extern void __cv_signal(kcondvar_t
*cvp
);
60 extern void __cv_broadcast(kcondvar_t
*cvp
);
62 #define cv_init(cvp, name, type, arg) __cv_init(cvp, name, type, arg)
63 #define cv_destroy(cvp) __cv_destroy(cvp)
64 #define cv_wait(cvp, mp) __cv_wait(cvp, mp)
65 #define cv_wait_io(cvp, mp) __cv_wait_io(cvp, mp)
66 #define cv_wait_interruptible(cvp, mp) __cv_wait_interruptible(cvp,mp)
67 #define cv_timedwait(cvp, mp, t) __cv_timedwait(cvp, mp, t)
68 #define cv_timedwait_interruptible(cvp, mp, t) \
69 __cv_timedwait_interruptible(cvp, mp, t)
70 #define cv_signal(cvp) __cv_signal(cvp)
71 #define cv_broadcast(cvp) __cv_broadcast(cvp)
73 #endif /* _SPL_CONDVAR_H */