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a09e091a JB |
1 | /* |
2 | * Copyright © 2010 NVIDIA Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | #ifdef HAVE_DIX_CONFIG_H | |
25 | #include <dix-config.h> | |
26 | #endif | |
27 | ||
28 | #include "scrnintstr.h" | |
29 | #include "misync.h" | |
30 | #include "misyncstr.h" | |
31 | ||
32 | DevPrivateKeyRec miSyncScreenPrivateKey; | |
33 | ||
34 | /* Default implementations of the sync screen functions */ | |
35 | void | |
36 | miSyncScreenCreateFence(ScreenPtr pScreen, SyncFence * pFence, | |
37 | Bool initially_triggered) | |
38 | { | |
39 | (void) pScreen; | |
40 | ||
41 | pFence->triggered = initially_triggered; | |
42 | } | |
43 | ||
44 | void | |
45 | miSyncScreenDestroyFence(ScreenPtr pScreen, SyncFence * pFence) | |
46 | { | |
47 | (void) pScreen; | |
48 | (void) pFence; | |
49 | } | |
50 | ||
51 | /* Default implementations of the per-object functions */ | |
52 | void | |
53 | miSyncFenceSetTriggered(SyncFence * pFence) | |
54 | { | |
55 | pFence->triggered = TRUE; | |
56 | } | |
57 | ||
58 | void | |
59 | miSyncFenceReset(SyncFence * pFence) | |
60 | { | |
61 | pFence->triggered = FALSE; | |
62 | } | |
63 | ||
64 | Bool | |
65 | miSyncFenceCheckTriggered(SyncFence * pFence) | |
66 | { | |
67 | return pFence->triggered; | |
68 | } | |
69 | ||
70 | void | |
71 | miSyncFenceAddTrigger(SyncTrigger * pTrigger) | |
72 | { | |
73 | (void) pTrigger; | |
74 | ||
75 | return; | |
76 | } | |
77 | ||
78 | void | |
79 | miSyncFenceDeleteTrigger(SyncTrigger * pTrigger) | |
80 | { | |
81 | (void) pTrigger; | |
82 | ||
83 | return; | |
84 | } | |
85 | ||
86 | /* Machine independent portion of the fence sync object implementation */ | |
87 | void | |
88 | miSyncInitFence(ScreenPtr pScreen, SyncFence * pFence, Bool initially_triggered) | |
89 | { | |
90 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); | |
91 | ||
92 | static const SyncFenceFuncsRec miSyncFenceFuncs = { | |
93 | &miSyncFenceSetTriggered, | |
94 | &miSyncFenceReset, | |
95 | &miSyncFenceCheckTriggered, | |
96 | &miSyncFenceAddTrigger, | |
97 | &miSyncFenceDeleteTrigger | |
98 | }; | |
99 | ||
100 | pFence->pScreen = pScreen; | |
101 | pFence->funcs = miSyncFenceFuncs; | |
102 | ||
103 | pScreenPriv->funcs.CreateFence(pScreen, pFence, initially_triggered); | |
104 | } | |
105 | ||
106 | void | |
107 | miSyncDestroyFence(SyncFence * pFence) | |
108 | { | |
109 | ScreenPtr pScreen = pFence->pScreen; | |
110 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); | |
111 | SyncTriggerList *ptl, *pNext; | |
112 | ||
113 | pFence->sync.beingDestroyed = TRUE; | |
114 | /* tell all the fence's triggers that the counter has been destroyed */ | |
115 | for (ptl = pFence->sync.pTriglist; ptl; ptl = pNext) { | |
116 | (*ptl->pTrigger->CounterDestroyed) (ptl->pTrigger); | |
117 | pNext = ptl->next; | |
118 | free(ptl); /* destroy the trigger list as we go */ | |
119 | } | |
120 | ||
121 | pScreenPriv->funcs.DestroyFence(pScreen, pFence); | |
122 | ||
123 | dixFreeObjectWithPrivates(pFence, PRIVATE_SYNC_FENCE); | |
124 | } | |
125 | ||
126 | void | |
127 | miSyncTriggerFence(SyncFence * pFence) | |
128 | { | |
129 | SyncTriggerList *ptl, *pNext; | |
130 | CARD64 unused; | |
131 | ||
132 | pFence->funcs.SetTriggered(pFence); | |
133 | ||
134 | XSyncIntToValue(&unused, 0L); | |
135 | ||
136 | /* run through triggers to see if any fired */ | |
137 | for (ptl = pFence->sync.pTriglist; ptl; ptl = pNext) { | |
138 | pNext = ptl->next; | |
139 | if ((*ptl->pTrigger->CheckTrigger) (ptl->pTrigger, unused)) | |
140 | (*ptl->pTrigger->TriggerFired) (ptl->pTrigger); | |
141 | } | |
142 | } | |
143 | ||
144 | SyncScreenFuncsPtr | |
145 | miSyncGetScreenFuncs(ScreenPtr pScreen) | |
146 | { | |
147 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); | |
148 | ||
149 | return &pScreenPriv->funcs; | |
150 | } | |
151 | ||
152 | static Bool | |
153 | SyncCloseScreen(ScreenPtr pScreen) | |
154 | { | |
155 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); | |
156 | ||
157 | pScreen->CloseScreen = pScreenPriv->CloseScreen; | |
158 | ||
159 | return (*pScreen->CloseScreen) (pScreen); | |
160 | } | |
161 | ||
162 | Bool | |
163 | miSyncSetup(ScreenPtr pScreen) | |
164 | { | |
165 | SyncScreenPrivPtr pScreenPriv; | |
166 | ||
167 | static const SyncScreenFuncsRec miSyncScreenFuncs = { | |
168 | &miSyncScreenCreateFence, | |
169 | &miSyncScreenDestroyFence | |
170 | }; | |
171 | ||
172 | if (!dixPrivateKeyRegistered(&miSyncScreenPrivateKey)) { | |
173 | if (!dixRegisterPrivateKey(&miSyncScreenPrivateKey, PRIVATE_SCREEN, | |
174 | sizeof(SyncScreenPrivRec))) | |
175 | return FALSE; | |
176 | } | |
177 | ||
178 | pScreenPriv = SYNC_SCREEN_PRIV(pScreen); | |
179 | ||
180 | if (!pScreenPriv->funcs.CreateFence) { | |
181 | pScreenPriv->funcs = miSyncScreenFuncs; | |
182 | ||
183 | /* Wrap CloseScreen to clean up */ | |
184 | pScreenPriv->CloseScreen = pScreen->CloseScreen; | |
185 | pScreen->CloseScreen = SyncCloseScreen; | |
186 | } | |
187 | ||
188 | return TRUE; | |
189 | } |