projects / mirror_spl.git / blame
| Commit | Line | Data |
|---|---|---|
| 715f6251 | 1 | /* |
| 2 | * This file is part of the SPL: Solaris Porting Layer. | |
| 3 | * | |
| 4 | * Copyright (c) 2008 Lawrence Livermore National Security, LLC. | |
| 5 | * Produced at Lawrence Livermore National Laboratory | |
| 6 | * Written by: | |
| 7 | * Brian Behlendorf <behlendorf1@llnl.gov>, | |
| 8 | * Herb Wartens <wartens2@llnl.gov>, | |
| 9 | * Jim Garlick <garlick@llnl.gov> | |
| 10 | * UCRL-CODE-235197 | |
| 11 | * | |
| 12 | * This is free software; you can redistribute it and/or modify it | |
| 13 | * under the terms of the GNU General Public License as published by | |
| 14 | * the Free Software Foundation; either version 2 of the License, or | |
| 15 | * (at your option) any later version. | |
| 16 | * | |
| 17 | * This is distributed in the hope that it will be useful, but WITHOUT | |
| 18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 20 | * for more details. | |
| 21 | * | |
| 22 | * You should have received a copy of the GNU General Public License along | |
| 23 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 24 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 25 | */ | |
| 26 | ||
| 09b414e8 | 27 | #ifndef _SPL_CONDVAR_H |
| 28 | #define _SPL_CONDVAR_H | |
| f1ca4da6 | 29 | |
| 30 | #ifdef __cplusplus | |
| 31 | extern "C" { | |
| 32 | #endif | |
| 33 | ||
| f1b59d26 | 34 | #include <linux/module.h> |
| f1ca4da6 | 35 | #include <linux/wait.h> |
| 4d54fdee | 36 | #include <sys/kmem.h> |
| 4efd4118 | 37 | #include <sys/mutex.h> |
| f1ca4da6 | 38 | |
| 39 | /* The kcondvar_t struct is protected by mutex taken externally before | |
| 40 | * calling any of the wait/signal funs, and passed into the wait funs. | |
| 41 | */ | |
| 42 | #define CV_MAGIC 0x346545f4 | |
| 43 | #define CV_POISON 0x95 | |
| 44 | ||
| 45 | typedef struct { | |
| 46 | int cv_magic; | |
| 47 | char *cv_name; | |
| 4efd4118 | 48 | int cv_name_size; |
| f1ca4da6 | 49 | wait_queue_head_t cv_event; |
| 50 | atomic_t cv_waiters; | |
| 4efd4118 | 51 | kmutex_t *cv_mutex; |
| 12ea9230 | 52 | spinlock_t cv_lock; |
| f1ca4da6 | 53 | } kcondvar_t; |
| 54 | ||
| 55 | typedef enum { CV_DEFAULT=0, CV_DRIVER } kcv_type_t; | |
| 56 | ||
| 4efd4118 | 57 | extern void __cv_init(kcondvar_t *cvp, char *name, kcv_type_t type, void *arg); |
| 58 | extern void __cv_destroy(kcondvar_t *cvp); | |
| 59 | extern void __cv_wait(kcondvar_t *cvp, kmutex_t *mp); | |
| f752b46e BB |
60 | extern void __cv_wait_interruptible(kcondvar_t *cvp, kmutex_t *mp); |
| 61 | extern clock_t __cv_timedwait(kcondvar_t *cvp, kmutex_t *mp, clock_t exp_time); | |
| 4efd4118 | 62 | extern void __cv_signal(kcondvar_t *cvp); |
| 63 | extern void __cv_broadcast(kcondvar_t *cvp); | |
| 64 | ||
| 65 | #define cv_init(cvp, name, type, arg) \ | |
| 66 | ({ \ | |
| 67 | if ((name) == NULL) \ | |
| 68 | __cv_init(cvp, #cvp, type, arg); \ | |
| 69 | else \ | |
| 70 | __cv_init(cvp, name, type, arg); \ | |
| 71 | }) | |
| 72 | #define cv_destroy(cvp) __cv_destroy(cvp) | |
| 73 | #define cv_wait(cvp, mp) __cv_wait(cvp, mp) | |
| f752b46e | 74 | #define cv_wait_interruptible(cvp, mp) __cv_wait_interruptible(cvp, mp) |
| 4efd4118 | 75 | #define cv_timedwait(cvp, mp, t) __cv_timedwait(cvp, mp, t) |
| 76 | #define cv_signal(cvp) __cv_signal(cvp) | |
| 77 | #define cv_broadcast(cvp) __cv_broadcast(cvp) | |
| f1ca4da6 | 78 | |
| 09b414e8 | 79 | #endif /* _SPL_CONDVAR_H */ |