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
|
/*
* Copyright © 2013 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS 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.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "scrnintstr.h"
#include "misync.h"
#include "misyncstr.h"
#include "misyncshm.h"
#include "misyncfd.h"
#include "pixmapstr.h"
#include <sys/mman.h>
#include <unistd.h>
#include <X11/xshmfence.h>
static DevPrivateKeyRec syncShmFencePrivateKey;
typedef struct _SyncShmFencePrivate {
int32_t *fence;
int fd;
} SyncShmFencePrivateRec, *SyncShmFencePrivatePtr;
#define SYNC_FENCE_PRIV(pFence) \
(SyncShmFencePrivatePtr) dixLookupPrivate(&pFence->devPrivates, &syncShmFencePrivateKey)
static void
miSyncShmFenceSetTriggered(SyncFence * pFence)
{
SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
if (pPriv->fence)
xshmfence_trigger(pPriv->fence);
miSyncFenceSetTriggered(pFence);
}
static void
miSyncShmFenceReset(SyncFence * pFence)
{
SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
if (pPriv->fence)
xshmfence_reset(pPriv->fence);
miSyncFenceReset(pFence);
}
static Bool
miSyncShmFenceCheckTriggered(SyncFence * pFence)
{
SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
if (pPriv->fence)
return xshmfence_query(pPriv->fence);
else
return miSyncFenceCheckTriggered(pFence);
}
static void
miSyncShmFenceAddTrigger(SyncTrigger * pTrigger)
{
miSyncFenceAddTrigger(pTrigger);
}
static void
miSyncShmFenceDeleteTrigger(SyncTrigger * pTrigger)
{
miSyncFenceDeleteTrigger(pTrigger);
}
static const SyncFenceFuncsRec miSyncShmFenceFuncs = {
&miSyncShmFenceSetTriggered,
&miSyncShmFenceReset,
&miSyncShmFenceCheckTriggered,
&miSyncShmFenceAddTrigger,
&miSyncShmFenceDeleteTrigger
};
static void
miSyncShmScreenCreateFence(ScreenPtr pScreen, SyncFence * pFence,
Bool initially_triggered)
{
SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
pPriv->fence = NULL;
miSyncScreenCreateFence(pScreen, pFence, initially_triggered);
pFence->funcs = miSyncShmFenceFuncs;
}
static void
miSyncShmScreenDestroyFence(ScreenPtr pScreen, SyncFence * pFence)
{
SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
if (pPriv->fence) {
xshmfence_trigger(pPriv->fence);
xshmfence_unmap_shm(pPriv->fence);
close(pPriv->fd);
}
miSyncScreenDestroyFence(pScreen, pFence);
}
static int
miSyncShmCreateFenceFromFd(ScreenPtr pScreen, SyncFence *pFence, int fd, Bool initially_triggered)
{
SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
miSyncInitFence(pScreen, pFence, initially_triggered);
pPriv->fence = xshmfence_map_shm(fd);
if (pPriv->fence) {
pPriv->fd = fd;
return Success;
}
else
close(fd);
return BadValue;
}
static int
miSyncShmGetFenceFd(ScreenPtr pScreen, SyncFence *pFence)
{
SyncShmFencePrivatePtr pPriv = SYNC_FENCE_PRIV(pFence);
if (!pPriv->fence) {
pPriv->fd = xshmfence_alloc_shm();
if (pPriv->fd < 0)
return -1;
pPriv->fence = xshmfence_map_shm(pPriv->fd);
if (!pPriv->fence) {
close (pPriv->fd);
return -1;
}
}
return pPriv->fd;
}
static const SyncFdScreenFuncsRec miSyncShmScreenFuncs = {
.version = SYNC_FD_SCREEN_FUNCS_VERSION,
.CreateFenceFromFd = miSyncShmCreateFenceFromFd,
.GetFenceFd = miSyncShmGetFenceFd
};
_X_EXPORT Bool miSyncShmScreenInit(ScreenPtr pScreen)
{
SyncScreenFuncsPtr funcs;
if (!miSyncFdScreenInit(pScreen, &miSyncShmScreenFuncs))
return FALSE;
if (!dixPrivateKeyRegistered(&syncShmFencePrivateKey)) {
if (!dixRegisterPrivateKey(&syncShmFencePrivateKey, PRIVATE_SYNC_FENCE,
sizeof(SyncShmFencePrivateRec)))
return FALSE;
}
funcs = miSyncGetScreenFuncs(pScreen);
funcs->CreateFence = miSyncShmScreenCreateFence;
funcs->DestroyFence = miSyncShmScreenDestroyFence;
return TRUE;
}
|
