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f6188ddd | 1 | /* |
716154c5 BB |
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>. | |
715f6251 | 6 | * UCRL-CODE-235197 |
7 | * | |
716154c5 | 8 | * This file is part of the SPL, Solaris Porting Layer. |
3d6af2dd | 9 | * For details, see <http://zfsonlinux.org/>. |
716154c5 BB |
10 | * |
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. | |
715f6251 | 15 | * |
716154c5 | 16 | * The SPL is distributed in the hope that it will be useful, but WITHOUT |
715f6251 | 17 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
19 | * for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
716154c5 | 22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
f6188ddd | 23 | */ |
715f6251 | 24 | |
09b414e8 | 25 | #ifndef _SPL_CONDVAR_H |
f6188ddd | 26 | #define _SPL_CONDVAR_H |
f1ca4da6 | 27 | |
f1b59d26 | 28 | #include <linux/module.h> |
f1ca4da6 | 29 | #include <linux/wait.h> |
33a20369 | 30 | #include <linux/delay_compat.h> |
4d54fdee | 31 | #include <sys/kmem.h> |
4efd4118 | 32 | #include <sys/mutex.h> |
33a20369 | 33 | #include <sys/callo.h> |
f1ca4da6 | 34 | |
716154c5 BB |
35 | /* |
36 | * The kcondvar_t struct is protected by mutex taken externally before | |
f1ca4da6 | 37 | * calling any of the wait/signal funs, and passed into the wait funs. |
38 | */ | |
f6188ddd AX |
39 | #define CV_MAGIC 0x346545f4 |
40 | #define CV_DESTROY 0x346545f5 | |
f1ca4da6 | 41 | |
42 | typedef struct { | |
43 | int cv_magic; | |
f1ca4da6 | 44 | wait_queue_head_t cv_event; |
d599e4fa | 45 | wait_queue_head_t cv_destroy; |
d2733258 | 46 | atomic_t cv_refs; |
f1ca4da6 | 47 | atomic_t cv_waiters; |
4efd4118 | 48 | kmutex_t *cv_mutex; |
f1ca4da6 | 49 | } kcondvar_t; |
50 | ||
f6188ddd | 51 | typedef enum { CV_DEFAULT = 0, CV_DRIVER } kcv_type_t; |
f1ca4da6 | 52 | |
f6188ddd AX |
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 void __cv_wait_sig(kcondvar_t *, kmutex_t *); | |
58 | extern clock_t __cv_timedwait(kcondvar_t *, kmutex_t *, clock_t); | |
59 | extern clock_t __cv_timedwait_sig(kcondvar_t *, kmutex_t *, clock_t); | |
60 | extern clock_t cv_timedwait_hires(kcondvar_t *, kmutex_t *, hrtime_t, | |
61 | hrtime_t res, int flag); | |
62 | extern void __cv_signal(kcondvar_t *); | |
63 | extern void __cv_broadcast(kcondvar_t *c); | |
4efd4118 | 64 | |
f6188ddd AX |
65 | #define cv_init(cvp, name, type, arg) __cv_init(cvp, name, type, arg) |
66 | #define cv_destroy(cvp) __cv_destroy(cvp) | |
67 | #define cv_wait(cvp, mp) __cv_wait(cvp, mp) | |
68 | #define cv_wait_io(cvp, mp) __cv_wait_io(cvp, mp) | |
69 | #define cv_wait_sig(cvp, mp) __cv_wait_sig(cvp, mp) | |
70 | #define cv_wait_interruptible(cvp, mp) cv_wait_sig(cvp, mp) | |
71 | #define cv_timedwait(cvp, mp, t) __cv_timedwait(cvp, mp, t) | |
72 | #define cv_timedwait_sig(cvp, mp, t) __cv_timedwait_sig(cvp, mp, t) | |
73 | #define cv_timedwait_interruptible(cvp, mp, t) cv_timedwait_sig(cvp, mp, t) | |
74 | #define cv_signal(cvp) __cv_signal(cvp) | |
75 | #define cv_broadcast(cvp) __cv_broadcast(cvp) | |
f1ca4da6 | 76 | |
09b414e8 | 77 | #endif /* _SPL_CONDVAR_H */ |