Annotation of prex-old/sys/include/ipc.h, Revision 1.1.1.1.2.1
1.1 nbrk 1: /*-
2: * Copyright (c) 2005, Kohsuke Ohtani
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #ifndef _IPC_H
31: #define _IPC_H
32:
33: #include <queue.h>
34:
35: struct thread;
36:
37: struct object {
38: int magic; /* magic number */
39: char name[MAXOBJNAME]; /* object name */
1.1.1.1.2.1! nbrk 40: struct list hash_link; /* link for object hash table */
! 41: struct list task_link; /* link in same task */
! 42: task_t owner; /* creater of this object */
1.1 nbrk 43: struct queue sendq; /* queue for sender threads */
44: struct queue recvq; /* queue for receiver threads */
45: };
46:
47: #define object_valid(obj) (kern_area(obj) && ((obj)->magic == OBJECT_MAGIC))
48:
49: /*
50: * Message header
51: */
52: struct msg_header {
53: task_t task; /* id of a sender task */
54: int code; /* message code */
55: int status; /* return status */
56: };
57:
58: extern int object_create(const char *, object_t *);
59: extern int object_lookup(const char *, object_t *);
60: extern int object_destroy(object_t);
61: extern void object_init(void);
62:
63: extern int msg_send(object_t, void *, size_t);
64: extern int msg_receive(object_t, void *, size_t);
65: extern int msg_reply(object_t, void *, size_t);
66: extern void msg_cleanup(struct thread *);
67: extern void msg_cancel(struct object *);
68: extern void msg_init(void);
69:
70: #endif /* !_IPC_H */
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