xorg-server-1.4/include/misc.h

   1 /***********************************************************
   2
   3 Copyright 1987, 1998  The Open Group
   4
   5 Permission to use, copy, modify, distribute, and sell this software and its
   6 documentation for any purpose is hereby granted without fee, provided that
   7 the above copyright notice appear in all copies and that both that
   8 copyright notice and this permission notice appear in supporting
   9 documentation.
  10
  11 The above copyright notice and this permission notice shall be included in
  12 all copies or substantial portions of the Software.
  13
  14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20
  21 Except as contained in this notice, the name of The Open Group shall not be
  22 used in advertising or otherwise to promote the sale, use or other dealings
  23 in this Software without prior written authorization from The Open Group.
  24
  25
  26 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
  27
  28                         All Rights Reserved
  29
  30 Permission to use, copy, modify, and distribute this software and its
  31 documentation for any purpose and without fee is hereby granted,
  32 provided that the above copyright notice appear in all copies and that
  33 both that copyright notice and this permission notice appear in
  34 supporting documentation, and that the name of Digital not be
  35 used in advertising or publicity pertaining to distribution of the
  36 software without specific, written prior permission.
  37
  38 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  39 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  40 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  41 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  42 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  43 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  44 SOFTWARE.
  45
  46 Copyright 1992, 1993 Data General Corporation;
  47 Copyright 1992, 1993 OMRON Corporation
  48
  49 Permission to use, copy, modify, distribute, and sell this software and its
  50 documentation for any purpose is hereby granted without fee, provided that the
  51 above copyright notice appear in all copies and that both that copyright
  52 notice and this permission notice appear in supporting documentation, and that
  53 neither the name OMRON or DATA GENERAL be used in advertising or publicity
  54 pertaining to distribution of the software without specific, written prior
  55 permission of the party whose name is to be used.  Neither OMRON or
  56 DATA GENERAL make any representation about the suitability of this software
  57 for any purpose.  It is provided "as is" without express or implied warranty.
  58
  59 OMRON AND DATA GENERAL EACH DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  60 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
  61 IN NO EVENT SHALL OMRON OR DATA GENERAL BE LIABLE FOR ANY SPECIAL, INDIRECT
  62 OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  63 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  64 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  65 OF THIS SOFTWARE.
  66
  67 ******************************************************************/
  68 #ifndef MISC_H
  69 #define MISC_H 1
  70 /*
  71  *  X internal definitions
  72  *
  73  */
  74
  75 extern unsigned long globalSerialNumber;
  76 extern unsigned long serverGeneration;
  77
  78 #include <X11/Xosdefs.h>
  79 #include <X11/Xfuncproto.h>
  80 #include <X11/Xmd.h>
  81 #include <X11/X.h>
  82 #include <X11/Xdefs.h>
  83
  84 #include <stddef.h>
  85
  86 #ifndef MAXSCREENS
  87 #define MAXSCREENS      16
  88 #endif
  89 #define MAXCLIENTS      256
  90 #define MAXDITS         1
  91 #define MAXEXTENSIONS   128
  92 #define MAXFORMATS      8
  93 #define MAXVISUALS_PER_SCREEN 50
  94
  95 typedef unsigned long PIXEL;
  96 typedef unsigned long ATOM;
  97
  98
  99 #ifndef TRUE
 100 #define TRUE 1
 101 #define FALSE 0
 102 #endif
 103
 104 #ifndef _XTYPEDEF_CALLBACKLISTPTR
 105 typedef struct _CallbackList *CallbackListPtr; /* also in dix.h */
 106 #define _XTYPEDEF_CALLBACKLISTPTR
 107 #endif
 108
 109 typedef struct _xReq *xReqPtr;
 110
 111 #include "os.h"         /* for ALLOCATE_LOCAL and DEALLOCATE_LOCAL */
 112 #include <X11/Xfuncs.h> /* for bcopy, bzero, and bcmp */
 113
 114 #define NullBox ((BoxPtr)0)
 115 #define MILLI_PER_MIN (1000 * 60)
 116 #define MILLI_PER_SECOND (1000)
 117
 118     /* this next is used with None and ParentRelative to tell
 119        PaintWin() what to use to paint the background. Also used
 120        in the macro IS_VALID_PIXMAP */
 121
 122 #define USE_BACKGROUND_PIXEL 3
 123 #define USE_BORDER_PIXEL 3
 124
 125
 126 /* byte swap a 32-bit literal */
 127 #define lswapl(x) ((((x) & 0xff) << 24) |\
 128                    (((x) & 0xff00) << 8) |\
 129                    (((x) & 0xff0000) >> 8) |\
 130                    (((x) >> 24) & 0xff))
 131
 132 /* byte swap a short literal */
 133 #define lswaps(x) ((((x) & 0xff) << 8) | (((x) >> 8) & 0xff))
 134
 135 #undef min
 136 #undef max
 137
 138 #define min(a, b) (((a) < (b)) ? (a) : (b))
 139 #define max(a, b) (((a) > (b)) ? (a) : (b))
 140 /* abs() is a function, not a macro; include the file declaring
 141  * it in case we haven't done that yet.
 142  */
 143 #include <stdlib.h>
 144 #ifndef Fabs
 145 #define Fabs(a) ((a) > 0.0 ? (a) : -(a))        /* floating absolute value */
 146 #endif
 147 #define sign(x) ((x) < 0 ? -1 : ((x) > 0 ? 1 : 0))
 148 /* this assumes b > 0 */
 149 #define modulus(a, b, d)    if (((d) = (a) % (b)) < 0) (d) += (b)
 150 /*
 151  * return the least significant bit in x which is set
 152  *
 153  * This works on 1's complement and 2's complement machines.
 154  * If you care about the extra instruction on 2's complement
 155  * machines, change to ((x) & (-(x)))
 156  */
 157 #define lowbit(x) ((x) & (~(x) + 1))
 158
 159 /* XXX Not for modules */
 160 #include <limits.h>
 161 #if !defined(MAXSHORT) || !defined(MINSHORT) || \
 162     !defined(MAXINT) || !defined(MININT)
 163 /*
 164  * Some implementations #define these through <math.h>, so preclude
 165  * #include'ing it later.
 166  */
 167
 168 #include <math.h>
 169 #undef MAXSHORT
 170 #define MAXSHORT SHRT_MAX
 171 #undef MINSHORT
 172 #define MINSHORT SHRT_MIN
 173 #undef MAXINT
 174 #define MAXINT INT_MAX
 175 #undef MININT
 176 #define MININT INT_MIN
 177
 178 #include <assert.h>
 179 #include <ctype.h>
 180 #include <stdio.h>     /* for fopen, etc... */
 181
 182 #endif
 183
 184 /* some macros to help swap requests, replies, and events */
 185
 186 #define LengthRestB(stuff) \
 187     ((client->req_len << 2) - sizeof(*stuff))
 188
 189 #define LengthRestS(stuff) \
 190     ((client->req_len << 1) - (sizeof(*stuff) >> 1))
 191
 192 #define LengthRestL(stuff) \
 193     (client->req_len - (sizeof(*stuff) >> 2))
 194
 195 #define SwapRestS(stuff) \
 196     SwapShorts((short *)(stuff + 1), LengthRestS(stuff))
 197
 198 #define SwapRestL(stuff) \
 199     SwapLongs((CARD32 *)(stuff + 1), LengthRestL(stuff))
 200
 201 /* byte swap a 32-bit value */
 202 #define swapl(x, n) { \
 203                  n = ((char *) (x))[0];\
 204                  ((char *) (x))[0] = ((char *) (x))[3];\
 205                  ((char *) (x))[3] = n;\
 206                  n = ((char *) (x))[1];\
 207                  ((char *) (x))[1] = ((char *) (x))[2];\
 208                  ((char *) (x))[2] = n; }
 209
 210 /* byte swap a short */
 211 #define swaps(x, n) { \
 212                  n = ((char *) (x))[0];\
 213                  ((char *) (x))[0] = ((char *) (x))[1];\
 214                  ((char *) (x))[1] = n; }
 215
 216 /* copy 32-bit value from src to dst byteswapping on the way */
 217 #define cpswapl(src, dst) { \
 218                  ((char *)&(dst))[0] = ((char *) &(src))[3];\
 219                  ((char *)&(dst))[1] = ((char *) &(src))[2];\
 220                  ((char *)&(dst))[2] = ((char *) &(src))[1];\
 221                  ((char *)&(dst))[3] = ((char *) &(src))[0]; }
 222
 223 /* copy short from src to dst byteswapping on the way */
 224 #define cpswaps(src, dst) { \
 225                  ((char *) &(dst))[0] = ((char *) &(src))[1];\
 226                  ((char *) &(dst))[1] = ((char *) &(src))[0]; }
 227
 228 extern void SwapLongs(
 229     CARD32 *list,
 230     unsigned long count);
 231
 232 extern void SwapShorts(
 233     short *list,
 234     unsigned long count);
 235
 236 extern void MakePredeclaredAtoms(void);
 237
 238 extern int Ones(
 239     unsigned long /*mask*/);
 240
 241 typedef struct _xPoint *DDXPointPtr;
 242 typedef struct pixman_box16 *BoxPtr;
 243 typedef struct _xEvent *xEventPtr;
 244 typedef struct _xRectangle *xRectanglePtr;
 245 typedef struct _GrabRec *GrabPtr;
 246
 247 /*  typedefs from other places - duplicated here to minimize the amount
 248  *  of unnecessary junk that one would normally have to include to get
 249  *  these symbols defined
 250  */
 251
 252 #ifndef _XTYPEDEF_CHARINFOPTR
 253 typedef struct _CharInfo *CharInfoPtr; /* also in fonts/include/font.h */
 254 #define _XTYPEDEF_CHARINFOPTR
 255 #endif
 256
 257 #endif /* MISC_H */