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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 */