1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/*
* $XConsortium: sleepuntil.c,v 1.5 94/04/17 20:32:57 dpw Exp $
* $XFree86: xc/programs/Xserver/Xext/sleepuntil.c,v 3.0 1996/05/06 05:55:34 dawes Exp $
*
Copyright (c) 1992 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.
*
* Author: Keith Packard, MIT X Consortium
*/
/* dixsleep.c - implement millisecond timeouts for X clients */
#include "X.h"
#include "Xmd.h"
#include "misc.h"
#include "windowstr.h"
#include "dixstruct.h"
#include "pixmapstr.h"
#include "scrnintstr.h"
typedef struct _Sertafied {
struct _Sertafied *next;
TimeStamp revive;
ClientPtr pClient;
XID id;
void (*notifyFunc)(
#if NeedNestedPrototypes
ClientPtr /* client */,
pointer /* closure */
#endif
);
pointer closure;
} SertafiedRec, *SertafiedPtr;
static SertafiedPtr pPending;
static RESTYPE SertafiedResType;
static Bool BlockHandlerRegistered;
static int SertafiedGeneration;
static void ClientAwaken(
#if NeedFunctionPrototypes
ClientPtr /* client */,
pointer /* closure */
#endif
);
static int SertafiedDelete(
#if NeedFunctionPrototypes
pointer /* value */,
XID /* id */
#endif
);
static void SertafiedBlockHandler(
#if NeedFunctionPrototypes
pointer /* data */,
OSTimePtr /* wt */,
pointer /* LastSelectMask */
#endif
);
static void SertafiedWakeupHandler(
#if NeedFunctionPrototypes
pointer /* data */,
int /* i */,
pointer /* LastSelectMask */
#endif
);
int
ClientSleepUntil (client, revive, notifyFunc, closure)
ClientPtr client;
TimeStamp *revive;
void (*notifyFunc)();
pointer closure;
{
SertafiedPtr pRequest, pReq, pPrev;
if (SertafiedGeneration != serverGeneration)
{
SertafiedResType = CreateNewResourceType (SertafiedDelete);
if (!SertafiedResType)
return FALSE;
SertafiedGeneration = serverGeneration;
BlockHandlerRegistered = FALSE;
}
pRequest = (SertafiedPtr) xalloc (sizeof (SertafiedRec));
if (!pRequest)
return FALSE;
pRequest->pClient = client;
pRequest->revive = *revive;
pRequest->id = FakeClientID (client->index);
pRequest->closure = closure;
if (!BlockHandlerRegistered)
{
if (!RegisterBlockAndWakeupHandlers (SertafiedBlockHandler,
SertafiedWakeupHandler,
(pointer) 0))
{
xfree (pRequest);
return FALSE;
}
BlockHandlerRegistered = TRUE;
}
pRequest->notifyFunc = 0;
if (!AddResource (pRequest->id, SertafiedResType, (pointer) pRequest))
return FALSE;
if (!notifyFunc)
notifyFunc = ClientAwaken;
pRequest->notifyFunc = notifyFunc;
/* Insert into time-ordered queue, with earliest activation time coming first. */
pPrev = 0;
for (pReq = pPending; pReq; pReq = pReq->next)
{
if (CompareTimeStamps (pReq->revive, *revive) == LATER)
break;
pPrev = pReq;
}
if (pPrev)
pPrev->next = pRequest;
else
pPending = pRequest;
pRequest->next = pReq;
IgnoreClient (client);
return TRUE;
}
static void
ClientAwaken (client, closure)
ClientPtr client;
pointer closure;
{
if (!client->clientGone)
AttendClient (client);
}
static int
SertafiedDelete (value, id)
pointer value;
XID id;
{
SertafiedPtr pRequest = (SertafiedPtr)value;
SertafiedPtr pReq, pPrev;
pPrev = 0;
for (pReq = pPending; pReq; pPrev = pReq, pReq = pReq->next)
if (pReq == pRequest)
{
if (pPrev)
pPrev->next = pReq->next;
else
pPending = pReq->next;
break;
}
if (pRequest->notifyFunc)
(*pRequest->notifyFunc) (pRequest->pClient, pRequest->closure);
xfree (pRequest);
return TRUE;
}
static void
SertafiedBlockHandler (data, wt, LastSelectMask)
pointer data; /* unused */
OSTimePtr wt; /* wait time */
pointer LastSelectMask;
{
SertafiedPtr pReq, pNext;
unsigned long newdelay, olddelay;
TimeStamp now;
if (!pPending)
return;
now.milliseconds = GetTimeInMillis ();
now.months = currentTime.months;
if ((int) (now.milliseconds - currentTime.milliseconds) < 0)
now.months++;
for (pReq = pPending; pReq; pReq = pNext)
{
pNext = pReq->next;
if (CompareTimeStamps (pReq->revive, now) == LATER)
break;
FreeResource (pReq->id, RT_NONE);
/* AttendClient() may have been called via the resource delete
* function so a client may have input to be processed and so
* set delay to 0 to prevent blocking in WaitForSomething().
*/
AdjustWaitForDelay (wt, 0);
}
pReq = pPending;
if (!pReq)
return;
newdelay = pReq->revive.milliseconds - now.milliseconds;
AdjustWaitForDelay (wt, newdelay);
}
static void
SertafiedWakeupHandler (data, i, LastSelectMask)
pointer data;
int i;
pointer LastSelectMask;
{
SertafiedPtr pReq, pNext;
TimeStamp now;
now.milliseconds = GetTimeInMillis ();
now.months = currentTime.months;
if ((int) (now.milliseconds - currentTime.milliseconds) < 0)
now.months++;
for (pReq = pPending; pReq; pReq = pNext)
{
pNext = pReq->next;
if (CompareTimeStamps (pReq->revive, now) == LATER)
break;
FreeResource (pReq->id, RT_NONE);
}
if (!pPending)
{
RemoveBlockAndWakeupHandlers (SertafiedBlockHandler,
SertafiedWakeupHandler,
(pointer) 0);
BlockHandlerRegistered = FALSE;
}
}
|
