Change sendfile() to use the new m_ext callback scheme for cleaning up after
[dragonfly.git] / sys / sys / upcall.h
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a722be49 1/*
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2 * Copyright (c) 2003,2004 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
6 *
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7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
8c10bfcf 10 *
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11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
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14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
a722be49 32 * SUCH DAMAGE.
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33 *
34 * $DragonFly: src/sys/sys/upcall.h,v 1.8 2004/07/16 05:51:57 dillon Exp $
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35 */
36
37#ifndef _SYS_UPCALL_H_
38#define _SYS_UPCALL_H_
39
40typedef void (*upcall_func_t)(void *);
41
42struct upcall {
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43 int upc_magic;
44 int upc_critoff; /* offset of crit_count in uthread */
45 int upc_pending; /* must follow crit_count */
ee5fb477 46 struct thread *upc_uthread; /* pointer to user thread (opaque) */
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47};
48
49#define UPCALL_MAGIC 0x55504331
50#define UPCALL_MAXCOUNT 32
51
52#define UPC_CONTROL_DISPATCH 1
53#define UPC_CONTROL_NEXT 2
54#define UPC_CONTROL_DELETE 3
55#define UPC_CONTROL_POLL 4
56#define UPC_CONTROL_POLLANDCLEAR 5
fe8c5e17 57#define UPC_CONTROL_WAIT 6
a722be49 58
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59#define UPC_CRITADD 32 /* NOTE! same as TDPRI_CRIT */
60
a722be49 61#if defined(_KERNEL)
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62/*
63 * Kernel protoypes
64 */
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65
66struct vmspace;
67
68void upc_release(struct vmspace *vm, struct proc *p);
69void postupcall(struct proc *p);
70
71#else
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72/*
73 * Userland prototypes
74 */
a722be49 75int upc_register(struct upcall *, upcall_func_t, upcall_func_t, void *);
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76int upc_control(int, int, void *);
77void upc_callused_wrapper(void *);
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78
79#endif
80
81#endif
82