1/*
2
3Copyright 1991, 1993, 1994, 1998 The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25*/
26
27/***********************************************************
28Copyright 1991,1993 by Digital Equipment Corporation, Maynard, Massachusetts,
29and Olivetti Research Limited, Cambridge, England.
30
31 All Rights Reserved
32
33Permission to use, copy, modify, and distribute this software and its
34documentation for any purpose and without fee is hereby granted,
35provided that the above copyright notice appear in all copies and that
36both that copyright notice and this permission notice appear in
37supporting documentation, and that the names of Digital or Olivetti
38not be used in advertising or publicity pertaining to distribution of the
39software without specific, written prior permission.
40
41DIGITAL AND OLIVETTI DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
42SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
43FITNESS, IN NO EVENT SHALL THEY BE LIABLE FOR ANY SPECIAL, INDIRECT OR
44CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
45USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
46OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
47PERFORMANCE OF THIS SOFTWARE.
48
49******************************************************************/
50
51#ifndef _SYNCCONST_H_
52#define _SYNCCONST_H_
53
54#define SYNC_NAME "SYNC"
55
56#define SYNC_MAJOR_VERSION 3
57#define SYNC_MINOR_VERSION 1
58
59
60#define XSyncCounterNotify 0
61#define XSyncAlarmNotify 1
62#define XSyncAlarmNotifyMask (1L << XSyncAlarmNotify)
63
64#define XSyncNumberEvents 2L
65
66#define XSyncBadCounter 0L
67#define XSyncBadAlarm 1L
68#define XSyncBadFence 2L
69#define XSyncNumberErrors (XSyncBadFence + 1)
70
71/*
72 * Flags for Alarm Attributes
73 */
74#define XSyncCACounter (1L<<0)
75#define XSyncCAValueType (1L<<1)
76#define XSyncCAValue (1L<<2)
77#define XSyncCATestType (1L<<3)
78#define XSyncCADelta (1L<<4)
79#define XSyncCAEvents (1L<<5)
80
81/* The _XSync macros below are for library internal use only. They exist
82 * so that if we have to make a fix, we can change it in this one place
83 * and have both the macro and function variants inherit the fix.
84 */
85
86#define _XSyncIntToValue(pv, i) ((pv)->hi=((i<0)?~0:0),(pv)->lo=(i))
87#define _XSyncIntsToValue(pv, l, h) ((pv)->lo = (l), (pv)->hi = (h))
88#define _XSyncValueGreaterThan(a, b)\
89 ((a).hi>(b).hi || ((a).hi==(b).hi && (a).lo>(b).lo))
90#define _XSyncValueLessThan(a, b)\
91 ((a).hi<(b).hi || ((a).hi==(b).hi && (a).lo<(b).lo))
92#define _XSyncValueGreaterOrEqual(a, b)\
93 ((a).hi>(b).hi || ((a).hi==(b).hi && (a).lo>=(b).lo))
94#define _XSyncValueLessOrEqual(a, b)\
95 ((a).hi<(b).hi || ((a).hi==(b).hi && (a).lo<=(b).lo))
96#define _XSyncValueEqual(a, b) ((a).lo==(b).lo && (a).hi==(b).hi)
97#define _XSyncValueIsNegative(v) (((v).hi & 0x80000000) ? 1 : 0)
98#define _XSyncValueIsZero(a) ((a).lo==0 && (a).hi==0)
99#define _XSyncValueIsPositive(v) (((v).hi & 0x80000000) ? 0 : 1)
100#define _XSyncValueLow32(v) ((v).lo)
101#define _XSyncValueHigh32(v) ((v).hi)
102#define _XSyncValueAdd(presult,a,b,poverflow) {\
103 int t = (a).lo;\
104 Bool signa = XSyncValueIsNegative(a);\
105 Bool signb = XSyncValueIsNegative(b);\
106 ((presult)->lo = (a).lo + (b).lo);\
107 ((presult)->hi = (a).hi + (b).hi);\
108 if (t>(presult)->lo) (presult)->hi++;\
109 *poverflow = ((signa == signb) && !(signa == XSyncValueIsNegative(*presult)));\
110 }
111#define _XSyncValueSubtract(presult,a,b,poverflow) {\
112 int t = (a).lo;\
113 Bool signa = XSyncValueIsNegative(a);\
114 Bool signb = XSyncValueIsNegative(b);\
115 ((presult)->lo = (a).lo - (b).lo);\
116 ((presult)->hi = (a).hi - (b).hi);\
117 if (t<(presult)->lo) (presult)->hi--;\
118 *poverflow = ((signa == signb) && !(signa == XSyncValueIsNegative(*presult)));\
119 }
120#define _XSyncMaxValue(pv) ((pv)->hi = 0x7fffffff, (pv)->lo = 0xffffffff)
121#define _XSyncMinValue(pv) ((pv)->hi = 0x80000000, (pv)->lo = 0)
122
123/*
124 * These are the publicly usable macros. If you want the function version
125 * of one of these, just #undef the macro to uncover the function.
126 * (This is the same convention that the ANSI C library uses.)
127 */
128
129#define XSyncIntToValue(pv, i) _XSyncIntToValue(pv, i)
130#define XSyncIntsToValue(pv, l, h) _XSyncIntsToValue(pv, l, h)
131#define XSyncValueGreaterThan(a, b) _XSyncValueGreaterThan(a, b)
132#define XSyncValueLessThan(a, b) _XSyncValueLessThan(a, b)
133#define XSyncValueGreaterOrEqual(a, b) _XSyncValueGreaterOrEqual(a, b)
134#define XSyncValueLessOrEqual(a, b) _XSyncValueLessOrEqual(a, b)
135#define XSyncValueEqual(a, b) _XSyncValueEqual(a, b)
136#define XSyncValueIsNegative(v) _XSyncValueIsNegative(v)
137#define XSyncValueIsZero(a) _XSyncValueIsZero(a)
138#define XSyncValueIsPositive(v) _XSyncValueIsPositive(v)
139#define XSyncValueLow32(v) _XSyncValueLow32(v)
140#define XSyncValueHigh32(v) _XSyncValueHigh32(v)
141#define XSyncValueAdd(presult,a,b,poverflow) _XSyncValueAdd(presult,a,b,poverflow)
142#define XSyncValueSubtract(presult,a,b,poverflow) _XSyncValueSubtract(presult,a,b,poverflow)
143#define XSyncMaxValue(pv) _XSyncMaxValue(pv)
144#define XSyncMinValue(pv) _XSyncMinValue(pv)
145
146/*
147 * Constants for the value_type argument of various requests
148 */
149typedef enum {
150 XSyncAbsolute,
151 XSyncRelative
152} XSyncValueType;
153
154/*
155 * Alarm Test types
156 */
157typedef enum {
158 XSyncPositiveTransition,
159 XSyncNegativeTransition,
160 XSyncPositiveComparison,
161 XSyncNegativeComparison
162} XSyncTestType;
163
164/*
165 * Alarm state constants
166 */
167typedef enum {
168 XSyncAlarmActive,
169 XSyncAlarmInactive,
170 XSyncAlarmDestroyed
171} XSyncAlarmState;
172
173
174typedef XID XSyncCounter;
175typedef XID XSyncAlarm;
176typedef XID XSyncFence;
177typedef struct _XSyncValue {
178 int hi;
179 unsigned int lo;
180} XSyncValue;
181#endif /* _SYNCCONST_H_ */
182

source code of include/X11/extensions/syncconst.h