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
60 struct workqueue_struct;
61
62 struct 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
77 struct 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
84 static inline struct delayed_work *
to_delayed_work(struct work_struct * work)85 to_delayed_work(struct work_struct *work)
86 {
87 return container_of(work, struct delayed_work, work);
88 }
89
90 extern struct workqueue_struct *system_wq;
91
92 int linux_workqueue_init(void);
93 void linux_workqueue_fini(void);
94
95 #define create_singlethread_workqueue(name) \
96 alloc_ordered_workqueue((name), 0)
97
98 struct workqueue_struct *
99 alloc_ordered_workqueue(const char *, int);
100 void destroy_workqueue(struct workqueue_struct *);
101 void flush_workqueue(struct workqueue_struct *);
102 void flush_scheduled_work(void);
103
104 void INIT_WORK(struct work_struct *, void (*)(struct work_struct *));
105 bool schedule_work(struct work_struct *);
106 bool queue_work(struct workqueue_struct *, struct work_struct *);
107 bool cancel_work_sync(struct work_struct *);
108 void flush_work(struct work_struct *);
109
110 void INIT_DELAYED_WORK(struct delayed_work *,
111 void (*)(struct work_struct *));
112 bool schedule_delayed_work(struct delayed_work *, unsigned long);
113 bool queue_delayed_work(struct workqueue_struct *, struct delayed_work *,
114 unsigned long ticks);
115 bool mod_delayed_work(struct workqueue_struct *, struct delayed_work *,
116 unsigned long ticks);
117 bool cancel_delayed_work(struct delayed_work *);
118 bool cancel_delayed_work_sync(struct delayed_work *);
119
120 #endif /* _LINUX_WORKQUEUE_H_ */
121