1/* $NetBSD: workqueue.h,v 1.1 2016/02/24 22:04:15 skrll Exp $ */
2
3/*-
4 * Copyright (c) 2013 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Taylor R. Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _LINUX_WORKQUEUE_H_
33#define _LINUX_WORKQUEUE_H_
34
35#include <sys/types.h>
36#include <sys/callout.h>
37#include <sys/queue.h>
38#include <sys/workqueue.h>
39
40#include <linux/kernel.h>
41
42#define INIT_DELAYED_WORK linux_INIT_DELAYED_WORK
43#define INIT_WORK linux_INIT_WORK
44#define alloc_ordered_workqueue linux_alloc_ordered_workqueue
45#define cancel_delayed_work linux_cancel_delayed_work
46#define cancel_delayed_work_sync linux_cancel_delayed_work_sync
47#define cancel_work linux_cancel_work
48#define cancel_work_sync linux_cancel_work_sync
49#define destroy_workqueue linux_destroy_workqueue
50#define flush_work linux_flush_work
51#define flush_workqueue linux_flush_workqueue
52#define queue_delayed_work linux_queue_delayed_work
53#define mod_delayed_work linux_mod_delayed_work
54#define queue_work linux_queue_work
55#define schedule_delayed_work linux_schedule_delayed_work
56#define schedule_work linux_schedule_work
57#define system_wq linux_system_wq
58#define to_delayed_work linux_to_delayed_work
59
60struct workqueue_struct;
61
62struct work_struct {
63 struct work w_wk;
64 __cpu_simple_lock_t w_lock; /* XXX */
65 enum {
66 WORK_IDLE,
67 WORK_DELAYED,
68 WORK_PENDING,
69 WORK_INVOKED,
70 WORK_CANCELLED,
71 WORK_DELAYED_CANCELLED,
72 } w_state;
73 struct workqueue_struct *w_wq;
74 void (*w_fn)(struct work_struct *);
75};
76
77struct delayed_work {
78 /* Not dw_work; name must match Linux. */
79 struct work_struct work;
80 struct callout dw_callout;
81 TAILQ_ENTRY(delayed_work) dw_entry;
82};
83
84static inline struct delayed_work *
85to_delayed_work(struct work_struct *work)
86{
87 return container_of(work, struct delayed_work, work);
88}
89
90extern struct workqueue_struct *system_wq;
91
92int linux_workqueue_init(void);
93void linux_workqueue_fini(void);
94
95#define create_singlethread_workqueue(name) \
96 alloc_ordered_workqueue((name), 0)
97
98struct workqueue_struct *
99 alloc_ordered_workqueue(const char *, int);
100void destroy_workqueue(struct workqueue_struct *);
101void flush_workqueue(struct workqueue_struct *);
102void flush_scheduled_work(void);
103
104void INIT_WORK(struct work_struct *, void (*)(struct work_struct *));
105bool schedule_work(struct work_struct *);
106bool queue_work(struct workqueue_struct *, struct work_struct *);
107bool cancel_work_sync(struct work_struct *);
108void flush_work(struct work_struct *);
109
110void INIT_DELAYED_WORK(struct delayed_work *,
111 void (*)(struct work_struct *));
112bool schedule_delayed_work(struct delayed_work *, unsigned long);
113bool queue_delayed_work(struct workqueue_struct *, struct delayed_work *,
114 unsigned long ticks);
115bool mod_delayed_work(struct workqueue_struct *, struct delayed_work *,
116 unsigned long ticks);
117bool cancel_delayed_work(struct delayed_work *);
118bool cancel_delayed_work_sync(struct delayed_work *);
119
120#endif /* _LINUX_WORKQUEUE_H_ */
121