/* $Id: osdep.h,v 1.1.1.1 90/11/28 16:44:33 altenhof Exp $ */

/*
 * Copyright (C) 1990 by Digital Equipment Corporation.
 * 
 * Author: Michael P. Altenhofen, CEC Karlsruhe e-mail:
 * Altenhofen@kampus.enet.dec.com
 * 
 * This file ist part of Shared X
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation without fee is hereby granted, but only for non-profit  use
 * and distribution,  and provided  that the copyright notice and this notice
 * is preserved on all copies.
 * 
 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
 * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */

#ifndef _OSDEP_H_
#define _OSDEP_H_
#include <sys/param.h>

#ifndef NOFILE			/* should be done in sys/param.h , but ... */
#define NOFILE 64
#endif

#ifndef NULL
#define NULL 0
#endif

#define BUFSIZE 4096
#define BUFWATERMARK 8192
#define MAXBUFSIZE (1 << 18)
#if ( NOFILE <= 128)
#define MAXSOCKS (NOFILE - 1)
#else
#define MAXSOCKS 128
#endif
#define mskcnt ((MAXSOCKS + 31) / 32)	/* size of bit array */

#if (mskcnt==1)
#define BITMASK(i) (1 << (i))
#define MASKIDX(i) 0
#endif
#if (mskcnt>1)
#define BITMASK(i) (1 << ((i) & 31))
#define MASKIDX(i) ((i) >> 5)
#endif

#define MASKWORD(buf, i) buf[MASKIDX(i)]
#define BITSET(buf, i) MASKWORD(buf, i) |= BITMASK(i)
#define BITCLEAR(buf, i) MASKWORD(buf, i) &= ~BITMASK(i)
#define GETBIT(buf, i) (MASKWORD(buf, i) & BITMASK(i))

#if (mskcnt==1)
#define COPYBITS(src, dst) dst[0] = src[0]
#define CLEARBITS(buf) buf[0] = 0
#define MASKANDSETBITS(dst, b1, b2) dst[0] = (b1[0] & b2[0])
#define ORBITS(dst, b1, b2) dst[0] = (b1[0] | b2[0])
#define UNSETBITS(dst, b1) (dst[0] &= ~b1[0])
#define ANYSET(src) (src[0])
#endif
#if (mskcnt==2)
#define COPYBITS(src, dst) dst[0] = src[0]; dst[1] = src[1]
#define CLEARBITS(buf) buf[0] = 0; buf[1] = 0
#define MASKANDSETBITS(dst, b1, b2)  \
		      dst[0] = (b1[0] & b2[0]);\
		      dst[1] = (b1[1] & b2[1])
#define ORBITS(dst, b1, b2)  \
		      dst[0] = (b1[0] | b2[0]);\
		      dst[1] = (b1[1] | b2[1])
#define UNSETBITS(dst, b1) \
                      dst[0] &= ~b1[0]; \
                      dst[1] &= ~b1[1]
#define ANYSET(src) (src[0] || src[1])
#endif
#if (mskcnt==3)
#define COPYBITS(src, dst) dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2];
#define CLEARBITS(buf) buf[0] = 0; buf[1] = 0; buf[2] = 0
#define MASKANDSETBITS(dst, b1, b2)  \
		      dst[0] = (b1[0] & b2[0]);\
		      dst[1] = (b1[1] & b2[1]);\
		      dst[2] = (b1[2] & b2[2])
#define ORBITS(dst, b1, b2)  \
		      dst[0] = (b1[0] | b2[0]);\
		      dst[1] = (b1[1] | b2[1]);\
		      dst[2] = (b1[2] | b2[2])
#define UNSETBITS(dst, b1) \
                      dst[0] &= ~b1[0]; \
                      dst[1] &= ~b1[1]; \
                      dst[2] &= ~b1[2]
#define ANYSET(src) (src[0] || src[1] || src[2])
#endif
#if (mskcnt==4)
#define COPYBITS(src, dst) dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2];\
		      dst[3] = src[3]
#define CLEARBITS(buf) buf[0] = 0; buf[1] = 0; buf[2] = 0; buf[3] = 0
#define MASKANDSETBITS(dst, b1, b2)  \
                      dst[0] = (b1[0] & b2[0]);\
                      dst[1] = (b1[1] & b2[1]);\
                      dst[2] = (b1[2] & b2[2]);\
                      dst[3] = (b1[3] & b2[3])
#define ORBITS(dst, b1, b2)  \
                      dst[0] = (b1[0] | b2[0]);\
                      dst[1] = (b1[1] | b2[1]);\
                      dst[2] = (b1[2] | b2[2]);\
                      dst[3] = (b1[3] | b2[3])
#define UNSETBITS(dst, b1) \
                      dst[0] &= ~b1[0]; \
                      dst[1] &= ~b1[1]; \
                      dst[2] &= ~b1[2]; \
                      dst[3] &= ~b1[3]
#define ANYSET(src) (src[0] || src[1] || src[2] || src[3])
#endif

#if (mskcnt>4)
#define COPYBITS(src, dst) bcopy((caddr_t) src, (caddr_t) dst,\
				 mskcnt*sizeof(long))
#define CLEARBITS(buf) bzero((caddr_t) buf, mskcnt*sizeof(long))
#define MASKANDSETBITS(dst, b1, b2)  \
		      { int cri;			\
			for (cri=0; cri<mskcnt; cri++)	\
		          dst[cri] = (b1[cri] & b2[cri]) }
#define ORBITS(dst, b1, b2)  \
		      { int cri;			\
		      for (cri=0; cri<mskcnt; cri++)	\
		          dst[cri] = (b1[cri] | b2[cri]) }
#define UNSETBITS(dst, b1) \
		      { int cri;			\
		      for (cri=0; cri<mskcnt; cri++)	\
		          dst[cri] &= ~b1[cri];  }

/*
 * If mskcnt>4, then ANYSET is a routine defined in WaitFor.c.
 * 
 * #define ANYSET(src) (src[0] || src[1] || src[2] || src[3] || src[4] ...)
 */
#endif

typedef struct _connectionInput {
  int used;			/* is this client connected */
  char *buffer;			/* contains current client input */
  char *bufptr;			/* pointer to current start of data */
  int bufcnt;			/* count of bytes in buffer */
  int lenLastReq;
  int size;
} ConnectionInput;

typedef struct _osComm {
  int fd;
  unsigned char *buf;
  int bufsize;
  int count;
} OsCommRec, *OsCommPtr;

void _Notice ();

#endif				/* -- #ifndef _OSDEP_H_ -- */