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 * 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