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Annotation of prex-old/sys/include/ipc.h, Revision 1.1

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 */
        !            40:        struct list     name_link;      /* list for name hash table */
        !            41:        struct list     task_link;      /* link all objects in same task */
        !            42:        task_t          owner;          /* owner task of this object */
        !            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: extern void     object_dump(void);
        !            63:
        !            64: extern int      msg_send(object_t, void *, size_t);
        !            65: extern int      msg_receive(object_t, void *, size_t);
        !            66: extern int      msg_reply(object_t, void *, size_t);
        !            67: extern void     msg_cleanup(struct thread *);
        !            68: extern void     msg_cancel(struct object *);
        !            69: extern void     msg_init(void);
        !            70:
        !            71: #endif /* !_IPC_H */