Merge remote-tracking branch 'origin/master'
[unleashed/lotheac.git] / usr / src / lib / libzfs / common / libzfs_taskq.h
blob7ac045738c367ecce08ac3db91e484ebc2e194ce
1 /*
2 * CDDL HEADER START
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
19 * CDDL HEADER END
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 * Copyright (c) 2012, 2017 by Delphix. All rights reserved.
25 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
28 #ifndef _ZFS_TASKQ_H
29 #define _ZFS_TASKQ_H
31 #include <stdint.h>
32 #include <umem.h>
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
38 typedef struct zfs_taskq zfs_taskq_t;
39 typedef uintptr_t zfs_taskqid_t;
40 typedef void (ztask_func_t)(void *);
42 #define ZFS_TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
44 #define ZFS_TASKQ_PREPOPULATE 0x0001
46 #define ZFS_TQ_SLEEP UMEM_NOFAIL /* Can block for memory */
47 #define ZFS_TQ_NOSLEEP UMEM_DEFAULT /* cannot block for memory; may fail */
48 #define ZFS_TQ_FRONT 0x08 /* Queue in front */
50 extern zfs_taskq_t *zfs_taskq_create(const char *, int, pri_t, int,
51 int, uint_t);
52 extern void zfs_taskq_destroy(zfs_taskq_t *);
54 extern zfs_taskqid_t zfs_taskq_dispatch(zfs_taskq_t *, ztask_func_t,
55 void *, uint_t);
57 extern void zfs_taskq_wait(zfs_taskq_t *);
59 #ifdef __cplusplus
61 #endif
63 #endif /* _ZFS_TASKQ_H */