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- /* $Id: share.h,v 1.3 2002/06/21 15:53:32 dijkstra Exp $ */
- /*
- * Copyright (c) 2001-2002 Willem Dijkstra
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- */
- /* TODO:
- * Dynamically allocate buffer size
- * Check wether one buffer suffices, do some performance tests
- */
- #ifndef _MONMUX_SHARE_H
- #define _MONMUX_SHARE_H
- #include "data.h"
- /* Share contains all routines needed for the ipc between monmuxes */
- #define SEM_WAIT 0 /* wait semaphore */
- #define SEM_READ 1 /* have read semaphore */
- #define SEM_TOTAL 2
- struct sharedregion {
- long seqnr;
- long reglen; /* size of buffer */
- long ctlen; /* amount of content in buffer, assert(< size) */
- long data;
- };
- /* prototypes */
- __BEGIN_DECLS
- void master_forbidread();
- void master_permitread();
- long shared_getlen();
- long shared_getmaxlen();
- long *shared_getmem();
- void initshare();
- void shared_setlen(long);
- void spawn_client(int);
- __END_DECLS
- #endif /*_MONMUX_SHARE_H*/
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