64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2015 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_ZRLOCK_H
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#define _SYS_ZRLOCK_H
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#include <sys/zfs_context.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct zrlock {
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kmutex_t zr_mtx;
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volatile int32_t zr_refcount;
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kcondvar_t zr_cv;
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uint16_t zr_pad;
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#ifdef ZFS_DEBUG
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kthread_t *zr_owner;
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const char *zr_caller;
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#endif
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} zrlock_t;
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extern void zrl_init(zrlock_t *);
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extern void zrl_destroy(zrlock_t *);
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#define zrl_add(_z) zrl_add_impl((_z), __func__)
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extern void zrl_add_impl(zrlock_t *, const char *);
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extern void zrl_remove(zrlock_t *);
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extern int zrl_tryenter(zrlock_t *);
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extern void zrl_exit(zrlock_t *);
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extern int zrl_is_zero(zrlock_t *);
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extern int zrl_is_locked(zrlock_t *);
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#ifdef ZFS_DEBUG
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extern kthread_t *zrl_owner(zrlock_t *);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ZRLOCK_H */
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