diff options
Diffstat (limited to 'sys/contrib/openzfs/lib/libspl/include/sys/mutex.h')
| -rw-r--r-- | sys/contrib/openzfs/lib/libspl/include/sys/mutex.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/lib/libspl/include/sys/mutex.h b/sys/contrib/openzfs/lib/libspl/include/sys/mutex.h new file mode 100644 index 000000000000..1da0e632d60f --- /dev/null +++ b/sys/contrib/openzfs/lib/libspl/include/sys/mutex.h @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: CDDL-1.0 +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or https://opensource.org/licenses/CDDL-1.0. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + * Copyright (c) 2012, 2018 by Delphix. All rights reserved. + * Copyright (c) 2012, Joyent, Inc. All rights reserved. + */ + +#ifndef _SYS_MUTEX_H +#define _SYS_MUTEX_H + +#include <pthread.h> + +/* + * Mutexes + */ +typedef struct kmutex { + pthread_mutex_t m_lock; + pthread_t m_owner; +} kmutex_t; + +#define MUTEX_DEFAULT 0 +#define MUTEX_NOLOCKDEP MUTEX_DEFAULT +#define MUTEX_HELD(mp) pthread_equal((mp)->m_owner, pthread_self()) +#define MUTEX_NOT_HELD(mp) !MUTEX_HELD(mp) + +extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie); +extern void mutex_destroy(kmutex_t *mp); +extern void mutex_enter(kmutex_t *mp); +extern int mutex_enter_check_return(kmutex_t *mp); +extern void mutex_exit(kmutex_t *mp); +extern int mutex_tryenter(kmutex_t *mp); + +#define NESTED_SINGLE 1 +#define mutex_enter_nested(mp, class) mutex_enter(mp) +#define mutex_enter_interruptible(mp) mutex_enter_check_return(mp) + +#endif /* _SYS_MUTEX_H */ |