/* $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*/