+++ /dev/null
-/* $XConsortium: Xpoll.h /main/6 1996/12/02 10:25:52 lehors $ */
-
-/*
-
-Copyright (c) 1994 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium shall
-not be used in advertising or otherwise to promote the sale, use or
-other dealings in this Software without prior written authorization
-from the X Consortium.
-
-*/
-
-#ifndef _XPOLL_H_
-#define _XPOLL_H_
-
-#ifndef WIN32
-
-#ifndef USE_POLL
-
-#include <X11/Xos.h>
-#if (defined(SVR4) || defined(CRAY) || defined(AIXV3)) && !defined(FD_SETSIZE)
-#include <sys/select.h>
-#ifdef luna
-#include <sysent.h>
-#endif
-#endif
-/* AIX 4.2 fubar-ed <sys/select.h>, so go to heroic measures to get it */
-#if defined(AIXV4) && !defined(NFDBITS)
-#include <sys/select.h>
-#endif
-#include <X11/Xmd.h>
-#ifdef CSRG_BASED
-#include <sys/param.h>
-# if BSD < 199103
-typedef long fd_mask;
-# endif
-#endif
-
-#define XFD_SETSIZE 256
-#ifndef FD_SETSIZE
-#define FD_SETSIZE XFD_SETSIZE
-#endif
-
-#ifndef NBBY
-#define NBBY 8 /* number of bits in a byte */
-#endif
-
-#ifndef NFDBITS
-#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
-#endif
-
-#ifndef howmany
-#define howmany(x,y) (((x)+((y)-1))/(y))
-#endif
-
-#ifdef BSD
-# if BSD < 198911 /* 198911 == OSF/1, 199103 == CSRG_BASED */
-# ifndef luna /* and even though on LUNA BSD == 43, it has it */
-typedef struct fd_set {
- fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
-} fd_set;
-# endif
-# endif
-#endif
-
-#ifdef hpux /* and perhaps old BSD ??? */
-#define Select(n,r,w,e,t) select(n,(int*)r,(int*)w,(int*)e,(struct timeval*)t)
-#else
-#define Select(n,r,w,e,t) select(n,(fd_set*)r,(fd_set*)w,(fd_set*)e,(struct timeval*)t)
-#endif
-
-#ifndef FD_SET
-#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
-#endif
-#ifndef FD_CLR
-#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
-#endif
-#ifndef FD_ISSET
-#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
-#endif
-#ifndef FD_ZERO
-#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p)))
-#endif
-
-/*
- * The following macros are used by the servers only. There is an
- * explicit assumption that the bit array in the fd_set is at least
- * 256 bits long (8 32-bit words). This is true on most modern POSIX
- * systems. Note that this is merely an optimization for the servers
- * based on assumptions about the way that file descripters are
- * allocated on POSIX systems.
- *
- * When porting X to new systems it is important to adjust these
- * macros if the system has fewer than 256 bits in the fd_set bit
- * array.
- */
-#define XFD_ANYSET(p) \
- ((p)->fds_bits[0] || (p)->fds_bits[1] || \
- (p)->fds_bits[2] || (p)->fds_bits[3] || \
- (p)->fds_bits[4] || (p)->fds_bits[5] || \
- (p)->fds_bits[6] || (p)->fds_bits[7])
-
-#define XFD_COPYSET(src,dst) \
- (dst)->fds_bits[0] = (src)->fds_bits[0]; \
- (dst)->fds_bits[1] = (src)->fds_bits[1]; \
- (dst)->fds_bits[2] = (src)->fds_bits[2]; \
- (dst)->fds_bits[3] = (src)->fds_bits[3]; \
- (dst)->fds_bits[4] = (src)->fds_bits[4]; \
- (dst)->fds_bits[5] = (src)->fds_bits[5]; \
- (dst)->fds_bits[6] = (src)->fds_bits[6]; \
- (dst)->fds_bits[7] = (src)->fds_bits[7];
-
-#define XFD_ANDSET(dst,b1,b2) \
- (dst)->fds_bits[0] = ((b1)->fds_bits[0] & (b2)->fds_bits[0]); \
- (dst)->fds_bits[1] = ((b1)->fds_bits[1] & (b2)->fds_bits[1]); \
- (dst)->fds_bits[2] = ((b1)->fds_bits[2] & (b2)->fds_bits[2]); \
- (dst)->fds_bits[3] = ((b1)->fds_bits[3] & (b2)->fds_bits[3]); \
- (dst)->fds_bits[4] = ((b1)->fds_bits[4] & (b2)->fds_bits[4]); \
- (dst)->fds_bits[5] = ((b1)->fds_bits[5] & (b2)->fds_bits[5]); \
- (dst)->fds_bits[6] = ((b1)->fds_bits[6] & (b2)->fds_bits[6]); \
- (dst)->fds_bits[7] = ((b1)->fds_bits[7] & (b2)->fds_bits[7]);
-
-#define XFD_ORSET(dst,b1,b2) \
- (dst)->fds_bits[0] = ((b1)->fds_bits[0] | (b2)->fds_bits[0]); \
- (dst)->fds_bits[1] = ((b1)->fds_bits[1] | (b2)->fds_bits[1]); \
- (dst)->fds_bits[2] = ((b1)->fds_bits[2] | (b2)->fds_bits[2]); \
- (dst)->fds_bits[3] = ((b1)->fds_bits[3] | (b2)->fds_bits[3]); \
- (dst)->fds_bits[4] = ((b1)->fds_bits[4] | (b2)->fds_bits[4]); \
- (dst)->fds_bits[5] = ((b1)->fds_bits[5] | (b2)->fds_bits[5]); \
- (dst)->fds_bits[6] = ((b1)->fds_bits[6] | (b2)->fds_bits[6]); \
- (dst)->fds_bits[7] = ((b1)->fds_bits[7] | (b2)->fds_bits[7]);
-
-#define XFD_UNSET(dst,b1) \
- (dst)->fds_bits[0] &= ~((b1)->fds_bits[0]); \
- (dst)->fds_bits[1] &= ~((b1)->fds_bits[1]); \
- (dst)->fds_bits[2] &= ~((b1)->fds_bits[2]); \
- (dst)->fds_bits[3] &= ~((b1)->fds_bits[3]); \
- (dst)->fds_bits[4] &= ~((b1)->fds_bits[4]); \
- (dst)->fds_bits[5] &= ~((b1)->fds_bits[5]); \
- (dst)->fds_bits[6] &= ~((b1)->fds_bits[6]); \
- (dst)->fds_bits[7] &= ~((b1)->fds_bits[7]);
-
-#else /* USE_POLL */
-#include <sys/poll.h>
-#endif /* USE_POLL */
-
-#else /* WIN32 */
-
-#define XFD_SETSIZE 256
-#ifndef FD_SETSIZE
-#define FD_SETSIZE XFD_SETSIZE
-#endif
-#include <X11/Xwinsock.h>
-
-#define Select(n,r,w,e,t) select(0,(fd_set*)r,(fd_set*)w,(fd_set*)e,(struct timeval*)t)
-
-#define XFD_SETCOUNT(p) (((fd_set FAR *)(p))->fd_count)
-#define XFD_FD(p,i) (((fd_set FAR *)(p))->fd_array[i])
-#define XFD_ANYSET(p) XFD_SETCOUNT(p)
-
-#define XFD_COPYSET(src,dst) { \
- u_int __i; \
- FD_ZERO(dst); \
- for (__i = 0; __i < XFD_SETCOUNT(src) ; __i++) { \
- XFD_FD(dst,__i) = XFD_FD(src,__i); \
- } \
- XFD_SETCOUNT(dst) = XFD_SETCOUNT(src); \
-}
-
-#define XFD_ANDSET(dst,b1,b2) { \
- u_int __i; \
- FD_ZERO(dst); \
- for (__i = 0; __i < XFD_SETCOUNT(b1) ; __i++) { \
- if (FD_ISSET(XFD_FD(b1,__i), b2)) \
- FD_SET(XFD_FD(b1,__i), dst); \
- } \
-}
-
-#define XFD_ORSET(dst,b1,b2) { \
- u_int __i; \
- XFD_COPYSET(b1,dst); \
- for (__i = 0; __i < XFD_SETCOUNT(b2) ; __i++) { \
- if (!FD_ISSET(XFD_FD(b2,__i), dst)) \
- FD_SET(XFD_FD(b2,__i), dst); \
- } \
-}
-
-/* this one is really sub-optimal */
-#define XFD_UNSET(dst,b1) { \
- u_int __i; \
- for (__i = 0; __i < XFD_SETCOUNT(b1) ; __i++) { \
- FD_CLR(XFD_FD(b1,__i), dst); \
- } \
-}
-
-/* we have to pay the price of having an array here, unlike with bitmasks
- calling twice FD_SET with the same fd is not transparent, so be careful */
-#undef FD_SET
-#define FD_SET(fd,set) do { \
- if (XFD_SETCOUNT(set) < FD_SETSIZE && !FD_ISSET(fd,set)) \
- XFD_FD(set,XFD_SETCOUNT(set)++)=(fd); \
-} while(0)
-
-#define getdtablesize() FD_SETSIZE
-
-#endif /* WIN32 */
-
-#endif /* _XPOLL_H_ */
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