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      1 /*	$NetBSD: workqueue.h,v 1.12 2022/10/23 08:38:21 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2002, 2005 YAMAMOTO Takashi,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _SYS_WORKQUEUE_H_
     30 #define	_SYS_WORKQUEUE_H_
     31 
     32 #include <sys/types.h>
     33 
     34 struct cpu_info;
     35 
     36 /*
     37  * a simple "do it in thread context" framework.
     38  *
     39  * this framework is designed to make struct work small as
     40  * far as possible, so that it can be embedded into other structures
     41  * without too much cost.
     42  */
     43 
     44 struct work {
     45 	void *wk_dummy;
     46 };
     47 
     48 struct workqueue;
     49 
     50 #define	WQ_MPSAFE	0x01
     51 #define	WQ_PERCPU	0x02
     52 #define	WQ_FPU		0x04
     53 
     54 int workqueue_create(struct workqueue **, const char *,
     55     void (*)(struct work *, void *), void *, pri_t, int, int);
     56 void workqueue_destroy(struct workqueue *);
     57 void workqueue_wait(struct workqueue *, struct work *);
     58 
     59 void workqueue_enqueue(struct workqueue *, struct work *, struct cpu_info *);
     60 
     61 #endif /* _SYS_WORKQUEUE_H_ */
     62