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a09e091a JB |
1 | /* |
2 | ||
3 | Copyright 1991, 1993, 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 | |
12 | in all copies or substantial portions of the Software. | |
13 | ||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
15 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
16 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
17 | IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
18 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
19 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
20 | OTHER DEALINGS IN THE SOFTWARE. | |
21 | ||
22 | Except as contained in this notice, the name of The Open Group shall | |
23 | not be used in advertising or otherwise to promote the sale, use or | |
24 | other dealings in this Software without prior written authorization | |
25 | from The Open Group. | |
26 | ||
27 | Copyright 1991, 1993 by Digital Equipment Corporation, Maynard, Massachusetts, | |
28 | and Olivetti Research Limited, Cambridge, England. | |
29 | ||
30 | All Rights Reserved | |
31 | ||
32 | Permission to use, copy, modify, and distribute this software and its | |
33 | documentation for any purpose and without fee is hereby granted, | |
34 | provided that the above copyright notice appear in all copies and that | |
35 | both that copyright notice and this permission notice appear in | |
36 | supporting documentation, and that the names of Digital or Olivetti | |
37 | not be used in advertising or publicity pertaining to distribution of the | |
38 | software without specific, written prior permission. Digital and Olivetti | |
39 | make no representations about the suitability of this software | |
40 | for any purpose. It is provided "as is" without express or implied warranty. | |
41 | ||
42 | DIGITAL AND OLIVETTI DISCLAIM ALL WARRANTIES WITH REGARD TO THIS | |
43 | SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
44 | FITNESS, IN NO EVENT SHALL THEY BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
45 | CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF | |
46 | USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR | |
47 | OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
48 | PERFORMANCE OF THIS SOFTWARE. | |
49 | ||
50 | */ | |
51 | ||
52 | #ifdef HAVE_DIX_CONFIG_H | |
53 | #include <dix-config.h> | |
54 | #endif | |
55 | ||
56 | #include <string.h> | |
57 | ||
58 | #include <X11/X.h> | |
59 | #include <X11/Xproto.h> | |
60 | #include <X11/Xmd.h> | |
61 | #include "scrnintstr.h" | |
62 | #include "os.h" | |
63 | #include "extnsionst.h" | |
64 | #include "dixstruct.h" | |
65 | #include "pixmapstr.h" | |
66 | #include "resource.h" | |
67 | #include "opaque.h" | |
68 | #include <X11/extensions/syncproto.h> | |
69 | #include "syncsrv.h" | |
70 | #include "syncsdk.h" | |
71 | #include "protocol-versions.h" | |
72 | #include "inputstr.h" | |
73 | ||
74 | #include <stdio.h> | |
75 | #if !defined(WIN32) | |
76 | #include <sys/time.h> | |
77 | #endif | |
78 | ||
79 | #include "extinit.h" | |
80 | ||
81 | /* | |
82 | * Local Global Variables | |
83 | */ | |
84 | static int SyncEventBase; | |
85 | static int SyncErrorBase; | |
86 | static RESTYPE RTCounter = 0; | |
87 | static RESTYPE RTAwait; | |
88 | static RESTYPE RTAlarm; | |
89 | static RESTYPE RTAlarmClient; | |
90 | static RESTYPE RTFence; | |
91 | static struct xorg_list SysCounterList; | |
92 | static int SyncNumInvalidCounterWarnings = 0; | |
93 | ||
94 | #define MAX_INVALID_COUNTER_WARNINGS 5 | |
95 | ||
96 | static const char *WARN_INVALID_COUNTER_COMPARE = | |
97 | "Warning: Non-counter XSync object using Counter-only\n" | |
98 | " comparison. Result will never be true.\n"; | |
99 | ||
100 | static const char *WARN_INVALID_COUNTER_ALARM = | |
101 | "Warning: Non-counter XSync object used in alarm. This is\n" | |
102 | " the result of a programming error in the X server.\n"; | |
103 | ||
104 | #define IsSystemCounter(pCounter) \ | |
105 | (pCounter && (pCounter->sync.client == NULL)) | |
106 | ||
107 | /* these are all the alarm attributes that pertain to the alarm's trigger */ | |
108 | #define XSyncCAAllTrigger \ | |
109 | (XSyncCACounter | XSyncCAValueType | XSyncCAValue | XSyncCATestType) | |
110 | ||
111 | static void SyncComputeBracketValues(SyncCounter *); | |
112 | ||
113 | static void SyncInitServerTime(void); | |
114 | ||
115 | static void SyncInitIdleTime(void); | |
116 | ||
117 | static inline void* | |
118 | SysCounterGetPrivate(SyncCounter *counter) | |
119 | { | |
120 | BUG_WARN(!IsSystemCounter(counter)); | |
121 | ||
122 | return counter->pSysCounterInfo ? counter->pSysCounterInfo->private : NULL; | |
123 | } | |
124 | ||
125 | static Bool | |
126 | SyncCheckWarnIsCounter(const SyncObject * pSync, const char *warning) | |
127 | { | |
128 | if (pSync && (SYNC_COUNTER != pSync->type)) { | |
129 | if (SyncNumInvalidCounterWarnings++ < MAX_INVALID_COUNTER_WARNINGS) { | |
130 | ErrorF("%s", warning); | |
131 | ErrorF(" Counter type: %d\n", pSync->type); | |
132 | } | |
133 | ||
134 | return FALSE; | |
135 | } | |
136 | ||
137 | return TRUE; | |
138 | } | |
139 | ||
140 | /* Each counter maintains a simple linked list of triggers that are | |
141 | * interested in the counter. The two functions below are used to | |
142 | * delete and add triggers on this list. | |
143 | */ | |
144 | void | |
145 | SyncDeleteTriggerFromSyncObject(SyncTrigger * pTrigger) | |
146 | { | |
147 | SyncTriggerList *pCur; | |
148 | SyncTriggerList *pPrev; | |
149 | SyncCounter *pCounter; | |
150 | ||
151 | /* pSync needs to be stored in pTrigger before calling here. */ | |
152 | ||
153 | if (!pTrigger->pSync) | |
154 | return; | |
155 | ||
156 | pPrev = NULL; | |
157 | pCur = pTrigger->pSync->pTriglist; | |
158 | ||
159 | while (pCur) { | |
160 | if (pCur->pTrigger == pTrigger) { | |
161 | if (pPrev) | |
162 | pPrev->next = pCur->next; | |
163 | else | |
164 | pTrigger->pSync->pTriglist = pCur->next; | |
165 | ||
166 | free(pCur); | |
167 | break; | |
168 | } | |
169 | ||
170 | pPrev = pCur; | |
171 | pCur = pCur->next; | |
172 | } | |
173 | ||
174 | if (SYNC_COUNTER == pTrigger->pSync->type) { | |
175 | pCounter = (SyncCounter *) pTrigger->pSync; | |
176 | ||
177 | if (IsSystemCounter(pCounter)) | |
178 | SyncComputeBracketValues(pCounter); | |
179 | } | |
180 | else if (SYNC_FENCE == pTrigger->pSync->type) { | |
181 | SyncFence *pFence = (SyncFence *) pTrigger->pSync; | |
182 | ||
183 | pFence->funcs.DeleteTrigger(pTrigger); | |
184 | } | |
185 | } | |
186 | ||
187 | int | |
188 | SyncAddTriggerToSyncObject(SyncTrigger * pTrigger) | |
189 | { | |
190 | SyncTriggerList *pCur; | |
191 | SyncCounter *pCounter; | |
192 | ||
193 | if (!pTrigger->pSync) | |
194 | return Success; | |
195 | ||
196 | /* don't do anything if it's already there */ | |
197 | for (pCur = pTrigger->pSync->pTriglist; pCur; pCur = pCur->next) { | |
198 | if (pCur->pTrigger == pTrigger) | |
199 | return Success; | |
200 | } | |
201 | ||
202 | if (!(pCur = malloc(sizeof(SyncTriggerList)))) | |
203 | return BadAlloc; | |
204 | ||
205 | pCur->pTrigger = pTrigger; | |
206 | pCur->next = pTrigger->pSync->pTriglist; | |
207 | pTrigger->pSync->pTriglist = pCur; | |
208 | ||
209 | if (SYNC_COUNTER == pTrigger->pSync->type) { | |
210 | pCounter = (SyncCounter *) pTrigger->pSync; | |
211 | ||
212 | if (IsSystemCounter(pCounter)) | |
213 | SyncComputeBracketValues(pCounter); | |
214 | } | |
215 | else if (SYNC_FENCE == pTrigger->pSync->type) { | |
216 | SyncFence *pFence = (SyncFence *) pTrigger->pSync; | |
217 | ||
218 | pFence->funcs.AddTrigger(pTrigger); | |
219 | } | |
220 | ||
221 | return Success; | |
222 | } | |
223 | ||
224 | /* Below are five possible functions that can be plugged into | |
225 | * pTrigger->CheckTrigger for counter sync objects, corresponding to | |
226 | * the four possible test-types, and the one possible function that | |
227 | * can be plugged into pTrigger->CheckTrigger for fence sync objects. | |
228 | * These functions are called after the sync object's state changes | |
229 | * but are also passed the old state so they can inspect both the old | |
230 | * and new values. (PositiveTransition and NegativeTransition need to | |
231 | * see both pieces of information.) These functions return the truth | |
232 | * value of the trigger. | |
233 | * | |
234 | * All of them include the condition pTrigger->pSync == NULL. | |
235 | * This is because the spec says that a trigger with a sync value | |
236 | * of None is always TRUE. | |
237 | */ | |
238 | ||
239 | static Bool | |
240 | SyncCheckTriggerPositiveComparison(SyncTrigger * pTrigger, CARD64 oldval) | |
241 | { | |
242 | SyncCounter *pCounter; | |
243 | ||
244 | /* Non-counter sync objects should never get here because they | |
245 | * never trigger this comparison. */ | |
246 | if (!SyncCheckWarnIsCounter(pTrigger->pSync, WARN_INVALID_COUNTER_COMPARE)) | |
247 | return FALSE; | |
248 | ||
249 | pCounter = (SyncCounter *) pTrigger->pSync; | |
250 | ||
251 | return (pCounter == NULL || | |
252 | XSyncValueGreaterOrEqual(pCounter->value, pTrigger->test_value)); | |
253 | } | |
254 | ||
255 | static Bool | |
256 | SyncCheckTriggerNegativeComparison(SyncTrigger * pTrigger, CARD64 oldval) | |
257 | { | |
258 | SyncCounter *pCounter; | |
259 | ||
260 | /* Non-counter sync objects should never get here because they | |
261 | * never trigger this comparison. */ | |
262 | if (!SyncCheckWarnIsCounter(pTrigger->pSync, WARN_INVALID_COUNTER_COMPARE)) | |
263 | return FALSE; | |
264 | ||
265 | pCounter = (SyncCounter *) pTrigger->pSync; | |
266 | ||
267 | return (pCounter == NULL || | |
268 | XSyncValueLessOrEqual(pCounter->value, pTrigger->test_value)); | |
269 | } | |
270 | ||
271 | static Bool | |
272 | SyncCheckTriggerPositiveTransition(SyncTrigger * pTrigger, CARD64 oldval) | |
273 | { | |
274 | SyncCounter *pCounter; | |
275 | ||
276 | /* Non-counter sync objects should never get here because they | |
277 | * never trigger this comparison. */ | |
278 | if (!SyncCheckWarnIsCounter(pTrigger->pSync, WARN_INVALID_COUNTER_COMPARE)) | |
279 | return FALSE; | |
280 | ||
281 | pCounter = (SyncCounter *) pTrigger->pSync; | |
282 | ||
283 | return (pCounter == NULL || | |
284 | (XSyncValueLessThan(oldval, pTrigger->test_value) && | |
285 | XSyncValueGreaterOrEqual(pCounter->value, pTrigger->test_value))); | |
286 | } | |
287 | ||
288 | static Bool | |
289 | SyncCheckTriggerNegativeTransition(SyncTrigger * pTrigger, CARD64 oldval) | |
290 | { | |
291 | SyncCounter *pCounter; | |
292 | ||
293 | /* Non-counter sync objects should never get here because they | |
294 | * never trigger this comparison. */ | |
295 | if (!SyncCheckWarnIsCounter(pTrigger->pSync, WARN_INVALID_COUNTER_COMPARE)) | |
296 | return FALSE; | |
297 | ||
298 | pCounter = (SyncCounter *) pTrigger->pSync; | |
299 | ||
300 | return (pCounter == NULL || | |
301 | (XSyncValueGreaterThan(oldval, pTrigger->test_value) && | |
302 | XSyncValueLessOrEqual(pCounter->value, pTrigger->test_value))); | |
303 | } | |
304 | ||
305 | static Bool | |
306 | SyncCheckTriggerFence(SyncTrigger * pTrigger, CARD64 unused) | |
307 | { | |
308 | SyncFence *pFence = (SyncFence *) pTrigger->pSync; | |
309 | ||
310 | (void) unused; | |
311 | ||
312 | return (pFence == NULL || pFence->funcs.CheckTriggered(pFence)); | |
313 | } | |
314 | ||
315 | static int | |
316 | SyncInitTrigger(ClientPtr client, SyncTrigger * pTrigger, XID syncObject, | |
317 | RESTYPE resType, Mask changes) | |
318 | { | |
319 | SyncObject *pSync = pTrigger->pSync; | |
320 | SyncCounter *pCounter = NULL; | |
321 | int rc; | |
322 | Bool newSyncObject = FALSE; | |
323 | ||
324 | if (changes & XSyncCACounter) { | |
325 | if (syncObject == None) | |
326 | pSync = NULL; | |
327 | else if (Success != (rc = dixLookupResourceByType((pointer *) &pSync, | |
328 | syncObject, resType, | |
329 | client, | |
330 | DixReadAccess))) { | |
331 | client->errorValue = syncObject; | |
332 | return rc; | |
333 | } | |
334 | if (pSync != pTrigger->pSync) { /* new counter for trigger */ | |
335 | SyncDeleteTriggerFromSyncObject(pTrigger); | |
336 | pTrigger->pSync = pSync; | |
337 | newSyncObject = TRUE; | |
338 | } | |
339 | } | |
340 | ||
341 | /* if system counter, ask it what the current value is */ | |
342 | ||
343 | if (pSync && SYNC_COUNTER == pSync->type) { | |
344 | pCounter = (SyncCounter *) pSync; | |
345 | ||
346 | if (IsSystemCounter(pCounter)) { | |
347 | (*pCounter->pSysCounterInfo->QueryValue) ((pointer) pCounter, | |
348 | &pCounter->value); | |
349 | } | |
350 | } | |
351 | ||
352 | if (changes & XSyncCAValueType) { | |
353 | if (pTrigger->value_type != XSyncRelative && | |
354 | pTrigger->value_type != XSyncAbsolute) { | |
355 | client->errorValue = pTrigger->value_type; | |
356 | return BadValue; | |
357 | } | |
358 | } | |
359 | ||
360 | if (changes & XSyncCATestType) { | |
361 | ||
362 | if (pSync && SYNC_FENCE == pSync->type) { | |
363 | pTrigger->CheckTrigger = SyncCheckTriggerFence; | |
364 | } | |
365 | else { | |
366 | /* select appropriate CheckTrigger function */ | |
367 | ||
368 | switch (pTrigger->test_type) { | |
369 | case XSyncPositiveTransition: | |
370 | pTrigger->CheckTrigger = SyncCheckTriggerPositiveTransition; | |
371 | break; | |
372 | case XSyncNegativeTransition: | |
373 | pTrigger->CheckTrigger = SyncCheckTriggerNegativeTransition; | |
374 | break; | |
375 | case XSyncPositiveComparison: | |
376 | pTrigger->CheckTrigger = SyncCheckTriggerPositiveComparison; | |
377 | break; | |
378 | case XSyncNegativeComparison: | |
379 | pTrigger->CheckTrigger = SyncCheckTriggerNegativeComparison; | |
380 | break; | |
381 | default: | |
382 | client->errorValue = pTrigger->test_type; | |
383 | return BadValue; | |
384 | } | |
385 | } | |
386 | } | |
387 | ||
388 | if (changes & (XSyncCAValueType | XSyncCAValue)) { | |
389 | if (pTrigger->value_type == XSyncAbsolute) | |
390 | pTrigger->test_value = pTrigger->wait_value; | |
391 | else { /* relative */ | |
392 | ||
393 | Bool overflow; | |
394 | ||
395 | if (pCounter == NULL) | |
396 | return BadMatch; | |
397 | ||
398 | XSyncValueAdd(&pTrigger->test_value, pCounter->value, | |
399 | pTrigger->wait_value, &overflow); | |
400 | if (overflow) { | |
401 | client->errorValue = XSyncValueHigh32(pTrigger->wait_value); | |
402 | return BadValue; | |
403 | } | |
404 | } | |
405 | } | |
406 | ||
407 | /* we wait until we're sure there are no errors before registering | |
408 | * a new counter on a trigger | |
409 | */ | |
410 | if (newSyncObject) { | |
411 | if ((rc = SyncAddTriggerToSyncObject(pTrigger)) != Success) | |
412 | return rc; | |
413 | } | |
414 | else if (pCounter && IsSystemCounter(pCounter)) { | |
415 | SyncComputeBracketValues(pCounter); | |
416 | } | |
417 | ||
418 | return Success; | |
419 | } | |
420 | ||
421 | /* AlarmNotify events happen in response to actions taken on an Alarm or | |
422 | * the counter used by the alarm. AlarmNotify may be sent to multiple | |
423 | * clients. The alarm maintains a list of clients interested in events. | |
424 | */ | |
425 | static void | |
426 | SyncSendAlarmNotifyEvents(SyncAlarm * pAlarm) | |
427 | { | |
428 | SyncAlarmClientList *pcl; | |
429 | xSyncAlarmNotifyEvent ane; | |
430 | SyncTrigger *pTrigger = &pAlarm->trigger; | |
431 | SyncCounter *pCounter; | |
432 | ||
433 | if (!SyncCheckWarnIsCounter(pTrigger->pSync, WARN_INVALID_COUNTER_ALARM)) | |
434 | return; | |
435 | ||
436 | pCounter = (SyncCounter *) pTrigger->pSync; | |
437 | ||
438 | UpdateCurrentTime(); | |
439 | ||
440 | ane = (xSyncAlarmNotifyEvent) { | |
441 | .type = SyncEventBase + XSyncAlarmNotify, | |
442 | .kind = XSyncAlarmNotify, | |
443 | .alarm = pAlarm->alarm_id, | |
444 | .alarm_value_hi = XSyncValueHigh32(pTrigger->test_value), | |
445 | .alarm_value_lo = XSyncValueLow32(pTrigger->test_value), | |
446 | .time = currentTime.milliseconds, | |
447 | .state = pAlarm->state | |
448 | }; | |
449 | ||
450 | if (pTrigger->pSync && SYNC_COUNTER == pTrigger->pSync->type) { | |
451 | ane.counter_value_hi = XSyncValueHigh32(pCounter->value); | |
452 | ane.counter_value_lo = XSyncValueLow32(pCounter->value); | |
453 | } | |
454 | else { | |
455 | /* XXX what else can we do if there's no counter? */ | |
456 | ane.counter_value_hi = ane.counter_value_lo = 0; | |
457 | } | |
458 | ||
459 | /* send to owner */ | |
460 | if (pAlarm->events) | |
461 | WriteEventsToClient(pAlarm->client, 1, (xEvent *) &ane); | |
462 | ||
463 | /* send to other interested clients */ | |
464 | for (pcl = pAlarm->pEventClients; pcl; pcl = pcl->next) | |
465 | WriteEventsToClient(pcl->client, 1, (xEvent *) &ane); | |
466 | } | |
467 | ||
468 | /* CounterNotify events only occur in response to an Await. The events | |
469 | * go only to the Awaiting client. | |
470 | */ | |
471 | static void | |
472 | SyncSendCounterNotifyEvents(ClientPtr client, SyncAwait ** ppAwait, | |
473 | int num_events) | |
474 | { | |
475 | xSyncCounterNotifyEvent *pEvents, *pev; | |
476 | int i; | |
477 | ||
478 | if (client->clientGone) | |
479 | return; | |
480 | pev = pEvents = calloc(num_events, sizeof(xSyncCounterNotifyEvent)); | |
481 | if (!pEvents) | |
482 | return; | |
483 | UpdateCurrentTime(); | |
484 | for (i = 0; i < num_events; i++, ppAwait++, pev++) { | |
485 | SyncTrigger *pTrigger = &(*ppAwait)->trigger; | |
486 | ||
487 | pev->type = SyncEventBase + XSyncCounterNotify; | |
488 | pev->kind = XSyncCounterNotify; | |
489 | pev->counter = pTrigger->pSync->id; | |
490 | pev->wait_value_lo = XSyncValueLow32(pTrigger->test_value); | |
491 | pev->wait_value_hi = XSyncValueHigh32(pTrigger->test_value); | |
492 | if (SYNC_COUNTER == pTrigger->pSync->type) { | |
493 | SyncCounter *pCounter = (SyncCounter *) pTrigger->pSync; | |
494 | ||
495 | pev->counter_value_lo = XSyncValueLow32(pCounter->value); | |
496 | pev->counter_value_hi = XSyncValueHigh32(pCounter->value); | |
497 | } | |
498 | else { | |
499 | pev->counter_value_lo = 0; | |
500 | pev->counter_value_hi = 0; | |
501 | } | |
502 | ||
503 | pev->time = currentTime.milliseconds; | |
504 | pev->count = num_events - i - 1; /* events remaining */ | |
505 | pev->destroyed = pTrigger->pSync->beingDestroyed; | |
506 | } | |
507 | /* swapping will be taken care of by this */ | |
508 | WriteEventsToClient(client, num_events, (xEvent *) pEvents); | |
509 | free(pEvents); | |
510 | } | |
511 | ||
512 | /* This function is called when an alarm's counter is destroyed. | |
513 | * It is plugged into pTrigger->CounterDestroyed (for alarm triggers). | |
514 | */ | |
515 | static void | |
516 | SyncAlarmCounterDestroyed(SyncTrigger * pTrigger) | |
517 | { | |
518 | SyncAlarm *pAlarm = (SyncAlarm *) pTrigger; | |
519 | ||
520 | pAlarm->state = XSyncAlarmInactive; | |
521 | SyncSendAlarmNotifyEvents(pAlarm); | |
522 | pTrigger->pSync = NULL; | |
523 | } | |
524 | ||
525 | /* This function is called when an alarm "goes off." | |
526 | * It is plugged into pTrigger->TriggerFired (for alarm triggers). | |
527 | */ | |
528 | static void | |
529 | SyncAlarmTriggerFired(SyncTrigger * pTrigger) | |
530 | { | |
531 | SyncAlarm *pAlarm = (SyncAlarm *) pTrigger; | |
532 | SyncCounter *pCounter; | |
533 | CARD64 new_test_value; | |
534 | ||
535 | if (!SyncCheckWarnIsCounter(pTrigger->pSync, WARN_INVALID_COUNTER_ALARM)) | |
536 | return; | |
537 | ||
538 | pCounter = (SyncCounter *) pTrigger->pSync; | |
539 | ||
540 | /* no need to check alarm unless it's active */ | |
541 | if (pAlarm->state != XSyncAlarmActive) | |
542 | return; | |
543 | ||
544 | /* " if the counter value is None, or if the delta is 0 and | |
545 | * the test-type is PositiveComparison or NegativeComparison, | |
546 | * no change is made to value (test-value) and the alarm | |
547 | * state is changed to Inactive before the event is generated." | |
548 | */ | |
549 | if (pCounter == NULL || (XSyncValueIsZero(pAlarm->delta) | |
550 | && (pAlarm->trigger.test_type == | |
551 | XSyncPositiveComparison || | |
552 | pAlarm->trigger.test_type == | |
553 | XSyncNegativeComparison))) | |
554 | pAlarm->state = XSyncAlarmInactive; | |
555 | ||
556 | new_test_value = pAlarm->trigger.test_value; | |
557 | ||
558 | if (pAlarm->state == XSyncAlarmActive) { | |
559 | Bool overflow; | |
560 | CARD64 oldvalue; | |
561 | SyncTrigger *paTrigger = &pAlarm->trigger; | |
562 | SyncCounter *paCounter; | |
563 | ||
564 | if (!SyncCheckWarnIsCounter(paTrigger->pSync, | |
565 | WARN_INVALID_COUNTER_ALARM)) | |
566 | return; | |
567 | ||
568 | paCounter = (SyncCounter *) pTrigger->pSync; | |
569 | ||
570 | /* "The alarm is updated by repeatedly adding delta to the | |
571 | * value of the trigger and re-initializing it until it | |
572 | * becomes FALSE." | |
573 | */ | |
574 | oldvalue = paTrigger->test_value; | |
575 | ||
576 | /* XXX really should do something smarter here */ | |
577 | ||
578 | do { | |
579 | XSyncValueAdd(&paTrigger->test_value, paTrigger->test_value, | |
580 | pAlarm->delta, &overflow); | |
581 | } while (!overflow && | |
582 | (*paTrigger->CheckTrigger) (paTrigger, paCounter->value)); | |
583 | ||
584 | new_test_value = paTrigger->test_value; | |
585 | paTrigger->test_value = oldvalue; | |
586 | ||
587 | /* "If this update would cause value to fall outside the range | |
588 | * for an INT64...no change is made to value (test-value) and | |
589 | * the alarm state is changed to Inactive before the event is | |
590 | * generated." | |
591 | */ | |
592 | if (overflow) { | |
593 | new_test_value = oldvalue; | |
594 | pAlarm->state = XSyncAlarmInactive; | |
595 | } | |
596 | } | |
597 | /* The AlarmNotify event has to have the "new state of the alarm" | |
598 | * which we can't be sure of until this point. However, it has | |
599 | * to have the "old" trigger test value. That's the reason for | |
600 | * all the newvalue/oldvalue shuffling above. After we send the | |
601 | * events, give the trigger its new test value. | |
602 | */ | |
603 | SyncSendAlarmNotifyEvents(pAlarm); | |
604 | pTrigger->test_value = new_test_value; | |
605 | } | |
606 | ||
607 | /* This function is called when an Await unblocks, either as a result | |
608 | * of the trigger firing OR the counter being destroyed. | |
609 | * It goes into pTrigger->TriggerFired AND pTrigger->CounterDestroyed | |
610 | * (for Await triggers). | |
611 | */ | |
612 | static void | |
613 | SyncAwaitTriggerFired(SyncTrigger * pTrigger) | |
614 | { | |
615 | SyncAwait *pAwait = (SyncAwait *) pTrigger; | |
616 | int numwaits; | |
617 | SyncAwaitUnion *pAwaitUnion; | |
618 | SyncAwait **ppAwait; | |
619 | int num_events = 0; | |
620 | ||
621 | pAwaitUnion = (SyncAwaitUnion *) pAwait->pHeader; | |
622 | numwaits = pAwaitUnion->header.num_waitconditions; | |
623 | ppAwait = malloc(numwaits * sizeof(SyncAwait *)); | |
624 | if (!ppAwait) | |
625 | goto bail; | |
626 | ||
627 | pAwait = &(pAwaitUnion + 1)->await; | |
628 | ||
629 | /* "When a client is unblocked, all the CounterNotify events for | |
630 | * the Await request are generated contiguously. If count is 0 | |
631 | * there are no more events to follow for this request. If | |
632 | * count is n, there are at least n more events to follow." | |
633 | * | |
634 | * Thus, it is best to find all the counters for which events | |
635 | * need to be sent first, so that an accurate count field can | |
636 | * be stored in the events. | |
637 | */ | |
638 | for (; numwaits; numwaits--, pAwait++) { | |
639 | CARD64 diff; | |
640 | Bool overflow, diffgreater, diffequal; | |
641 | ||
642 | /* "A CounterNotify event with the destroyed flag set to TRUE is | |
643 | * always generated if the counter for one of the triggers is | |
644 | * destroyed." | |
645 | */ | |
646 | if (pAwait->trigger.pSync->beingDestroyed) { | |
647 | ppAwait[num_events++] = pAwait; | |
648 | continue; | |
649 | } | |
650 | ||
651 | if (SYNC_COUNTER == pAwait->trigger.pSync->type) { | |
652 | SyncCounter *pCounter = (SyncCounter *) pAwait->trigger.pSync; | |
653 | ||
654 | /* "The difference between the counter and the test value is | |
655 | * calculated by subtracting the test value from the value of | |
656 | * the counter." | |
657 | */ | |
658 | XSyncValueSubtract(&diff, pCounter->value, | |
659 | pAwait->trigger.test_value, &overflow); | |
660 | ||
661 | /* "If the difference lies outside the range for an INT64, an | |
662 | * event is not generated." | |
663 | */ | |
664 | if (overflow) | |
665 | continue; | |
666 | diffgreater = XSyncValueGreaterThan(diff, pAwait->event_threshold); | |
667 | diffequal = XSyncValueEqual(diff, pAwait->event_threshold); | |
668 | ||
669 | /* "If the test-type is PositiveTransition or | |
670 | * PositiveComparison, a CounterNotify event is generated if | |
671 | * the difference is at least event-threshold. If the test-type | |
672 | * is NegativeTransition or NegativeComparison, a CounterNotify | |
673 | * event is generated if the difference is at most | |
674 | * event-threshold." | |
675 | */ | |
676 | ||
677 | if (((pAwait->trigger.test_type == XSyncPositiveComparison || | |
678 | pAwait->trigger.test_type == XSyncPositiveTransition) | |
679 | && (diffgreater || diffequal)) | |
680 | || | |
681 | ((pAwait->trigger.test_type == XSyncNegativeComparison || | |
682 | pAwait->trigger.test_type == XSyncNegativeTransition) | |
683 | && (!diffgreater) /* less or equal */ | |
684 | ) | |
685 | ) { | |
686 | ppAwait[num_events++] = pAwait; | |
687 | } | |
688 | } | |
689 | } | |
690 | if (num_events) | |
691 | SyncSendCounterNotifyEvents(pAwaitUnion->header.client, ppAwait, | |
692 | num_events); | |
693 | free(ppAwait); | |
694 | ||
695 | bail: | |
696 | /* unblock the client */ | |
697 | AttendClient(pAwaitUnion->header.client); | |
698 | /* delete the await */ | |
699 | FreeResource(pAwaitUnion->header.delete_id, RT_NONE); | |
700 | } | |
701 | ||
702 | static CARD64 | |
703 | SyncUpdateCounter(SyncCounter *pCounter, CARD64 newval) | |
704 | { | |
705 | CARD64 oldval = pCounter->value; | |
706 | pCounter->value = newval; | |
707 | return oldval; | |
708 | } | |
709 | ||
710 | /* This function should always be used to change a counter's value so that | |
711 | * any triggers depending on the counter will be checked. | |
712 | */ | |
713 | void | |
714 | SyncChangeCounter(SyncCounter * pCounter, CARD64 newval) | |
715 | { | |
716 | SyncTriggerList *ptl, *pnext; | |
717 | CARD64 oldval; | |
718 | ||
719 | oldval = SyncUpdateCounter(pCounter, newval); | |
720 | ||
721 | /* run through triggers to see if any become true */ | |
722 | for (ptl = pCounter->sync.pTriglist; ptl; ptl = pnext) { | |
723 | pnext = ptl->next; | |
724 | if ((*ptl->pTrigger->CheckTrigger) (ptl->pTrigger, oldval)) | |
725 | (*ptl->pTrigger->TriggerFired) (ptl->pTrigger); | |
726 | } | |
727 | ||
728 | if (IsSystemCounter(pCounter)) { | |
729 | SyncComputeBracketValues(pCounter); | |
730 | } | |
731 | } | |
732 | ||
733 | /* loosely based on dix/events.c/EventSelectForWindow */ | |
734 | static Bool | |
735 | SyncEventSelectForAlarm(SyncAlarm * pAlarm, ClientPtr client, Bool wantevents) | |
736 | { | |
737 | SyncAlarmClientList *pClients; | |
738 | ||
739 | if (client == pAlarm->client) { /* alarm owner */ | |
740 | pAlarm->events = wantevents; | |
741 | return Success; | |
742 | } | |
743 | ||
744 | /* see if the client is already on the list (has events selected) */ | |
745 | ||
746 | for (pClients = pAlarm->pEventClients; pClients; pClients = pClients->next) { | |
747 | if (pClients->client == client) { | |
748 | /* client's presence on the list indicates desire for | |
749 | * events. If the client doesn't want events, remove it | |
750 | * from the list. If the client does want events, do | |
751 | * nothing, since it's already got them. | |
752 | */ | |
753 | if (!wantevents) { | |
754 | FreeResource(pClients->delete_id, RT_NONE); | |
755 | } | |
756 | return Success; | |
757 | } | |
758 | } | |
759 | ||
760 | /* if we get here, this client does not currently have | |
761 | * events selected on the alarm | |
762 | */ | |
763 | ||
764 | if (!wantevents) | |
765 | /* client doesn't want events, and we just discovered that it | |
766 | * doesn't have them, so there's nothing to do. | |
767 | */ | |
768 | return Success; | |
769 | ||
770 | /* add new client to pAlarm->pEventClients */ | |
771 | ||
772 | pClients = malloc(sizeof(SyncAlarmClientList)); | |
773 | if (!pClients) | |
774 | return BadAlloc; | |
775 | ||
776 | /* register it as a resource so it will be cleaned up | |
777 | * if the client dies | |
778 | */ | |
779 | ||
780 | pClients->delete_id = FakeClientID(client->index); | |
781 | ||
782 | /* link it into list after we know all the allocations succeed */ | |
783 | pClients->next = pAlarm->pEventClients; | |
784 | pAlarm->pEventClients = pClients; | |
785 | pClients->client = client; | |
786 | ||
787 | if (!AddResource(pClients->delete_id, RTAlarmClient, pAlarm)) | |
788 | return BadAlloc; | |
789 | ||
790 | return Success; | |
791 | } | |
792 | ||
793 | /* | |
794 | * ** SyncChangeAlarmAttributes ** This is used by CreateAlarm and ChangeAlarm | |
795 | */ | |
796 | static int | |
797 | SyncChangeAlarmAttributes(ClientPtr client, SyncAlarm * pAlarm, Mask mask, | |
798 | CARD32 *values) | |
799 | { | |
800 | int status; | |
801 | XSyncCounter counter; | |
802 | Mask origmask = mask; | |
803 | ||
804 | counter = pAlarm->trigger.pSync ? pAlarm->trigger.pSync->id : None; | |
805 | ||
806 | while (mask) { | |
807 | int index2 = lowbit(mask); | |
808 | ||
809 | mask &= ~index2; | |
810 | switch (index2) { | |
811 | case XSyncCACounter: | |
812 | mask &= ~XSyncCACounter; | |
813 | /* sanity check in SyncInitTrigger */ | |
814 | counter = *values++; | |
815 | break; | |
816 | ||
817 | case XSyncCAValueType: | |
818 | mask &= ~XSyncCAValueType; | |
819 | /* sanity check in SyncInitTrigger */ | |
820 | pAlarm->trigger.value_type = *values++; | |
821 | break; | |
822 | ||
823 | case XSyncCAValue: | |
824 | mask &= ~XSyncCAValue; | |
825 | XSyncIntsToValue(&pAlarm->trigger.wait_value, values[1], values[0]); | |
826 | values += 2; | |
827 | break; | |
828 | ||
829 | case XSyncCATestType: | |
830 | mask &= ~XSyncCATestType; | |
831 | /* sanity check in SyncInitTrigger */ | |
832 | pAlarm->trigger.test_type = *values++; | |
833 | break; | |
834 | ||
835 | case XSyncCADelta: | |
836 | mask &= ~XSyncCADelta; | |
837 | XSyncIntsToValue(&pAlarm->delta, values[1], values[0]); | |
838 | values += 2; | |
839 | break; | |
840 | ||
841 | case XSyncCAEvents: | |
842 | mask &= ~XSyncCAEvents; | |
843 | if ((*values != xTrue) && (*values != xFalse)) { | |
844 | client->errorValue = *values; | |
845 | return BadValue; | |
846 | } | |
847 | status = SyncEventSelectForAlarm(pAlarm, client, | |
848 | (Bool) (*values++)); | |
849 | if (status != Success) | |
850 | return status; | |
851 | break; | |
852 | ||
853 | default: | |
854 | client->errorValue = mask; | |
855 | return BadValue; | |
856 | } | |
857 | } | |
858 | ||
859 | /* "If the test-type is PositiveComparison or PositiveTransition | |
860 | * and delta is less than zero, or if the test-type is | |
861 | * NegativeComparison or NegativeTransition and delta is | |
862 | * greater than zero, a Match error is generated." | |
863 | */ | |
864 | if (origmask & (XSyncCADelta | XSyncCATestType)) { | |
865 | CARD64 zero; | |
866 | ||
867 | XSyncIntToValue(&zero, 0); | |
868 | if ((((pAlarm->trigger.test_type == XSyncPositiveComparison) || | |
869 | (pAlarm->trigger.test_type == XSyncPositiveTransition)) | |
870 | && XSyncValueLessThan(pAlarm->delta, zero)) | |
871 | || | |
872 | (((pAlarm->trigger.test_type == XSyncNegativeComparison) || | |
873 | (pAlarm->trigger.test_type == XSyncNegativeTransition)) | |
874 | && XSyncValueGreaterThan(pAlarm->delta, zero)) | |
875 | ) { | |
876 | return BadMatch; | |
877 | } | |
878 | } | |
879 | ||
880 | /* postpone this until now, when we're sure nothing else can go wrong */ | |
881 | if ((status = SyncInitTrigger(client, &pAlarm->trigger, counter, RTCounter, | |
882 | origmask & XSyncCAAllTrigger)) != Success) | |
883 | return status; | |
884 | ||
885 | /* XXX spec does not really say to do this - needs clarification */ | |
886 | pAlarm->state = XSyncAlarmActive; | |
887 | return Success; | |
888 | } | |
889 | ||
890 | static SyncObject * | |
891 | SyncCreate(ClientPtr client, XID id, unsigned char type) | |
892 | { | |
893 | SyncObject *pSync; | |
894 | ||
895 | switch (type) { | |
896 | case SYNC_COUNTER: | |
897 | pSync = malloc(sizeof(SyncCounter)); | |
898 | break; | |
899 | case SYNC_FENCE: | |
900 | pSync = (SyncObject *) dixAllocateObjectWithPrivates(SyncFence, | |
901 | PRIVATE_SYNC_FENCE); | |
902 | break; | |
903 | default: | |
904 | return NULL; | |
905 | } | |
906 | ||
907 | if (!pSync) | |
908 | return NULL; | |
909 | ||
910 | pSync->client = client; | |
911 | pSync->id = id; | |
912 | pSync->pTriglist = NULL; | |
913 | pSync->beingDestroyed = FALSE; | |
914 | pSync->type = type; | |
915 | ||
916 | return pSync; | |
917 | } | |
918 | ||
919 | int | |
920 | SyncCreateFenceFromFD(ClientPtr client, DrawablePtr pDraw, XID id, int fd, BOOL initially_triggered) | |
921 | { | |
922 | #if HAVE_XSHMFENCE | |
923 | SyncFence *pFence; | |
924 | int status; | |
925 | ||
926 | pFence = (SyncFence *) SyncCreate(client, id, SYNC_FENCE); | |
927 | if (!pFence) | |
928 | return BadAlloc; | |
929 | ||
930 | status = miSyncInitFenceFromFD(pDraw, pFence, fd, initially_triggered); | |
931 | if (status != Success) { | |
932 | dixFreeObjectWithPrivates(pFence, PRIVATE_SYNC_FENCE); | |
933 | return status; | |
934 | } | |
935 | ||
936 | if (!AddResource(id, RTFence, (pointer) pFence)) | |
937 | return BadAlloc; | |
938 | ||
939 | return Success; | |
940 | #else | |
941 | return BadImplementation; | |
942 | #endif | |
943 | } | |
944 | ||
945 | int | |
946 | SyncFDFromFence(ClientPtr client, DrawablePtr pDraw, SyncFence *pFence) | |
947 | { | |
948 | #if HAVE_XSHMFENCE | |
949 | return miSyncFDFromFence(pDraw, pFence); | |
950 | #else | |
951 | return BadImplementation; | |
952 | #endif | |
953 | } | |
954 | ||
955 | static SyncCounter * | |
956 | SyncCreateCounter(ClientPtr client, XSyncCounter id, CARD64 initialvalue) | |
957 | { | |
958 | SyncCounter *pCounter; | |
959 | ||
960 | if (!(pCounter = (SyncCounter *) SyncCreate(client, id, SYNC_COUNTER))) | |
961 | return NULL; | |
962 | ||
963 | pCounter->value = initialvalue; | |
964 | pCounter->pSysCounterInfo = NULL; | |
965 | ||
966 | if (!AddResource(id, RTCounter, (pointer) pCounter)) | |
967 | return NULL; | |
968 | ||
969 | return pCounter; | |
970 | } | |
971 | ||
972 | static int FreeCounter(void *, XID); | |
973 | ||
974 | /* | |
975 | * ***** System Counter utilities | |
976 | */ | |
977 | ||
978 | SyncCounter* | |
979 | SyncCreateSystemCounter(const char *name, | |
980 | CARD64 initial, | |
981 | CARD64 resolution, | |
982 | SyncCounterType counterType, | |
983 | SyncSystemCounterQueryValue QueryValue, | |
984 | SyncSystemCounterBracketValues BracketValues | |
985 | ) | |
986 | { | |
987 | SyncCounter *pCounter; | |
988 | ||
989 | /* this function may be called before SYNC has been initialized, so we | |
990 | * have to make sure RTCounter is created. | |
991 | */ | |
992 | if (RTCounter == 0) { | |
993 | RTCounter = CreateNewResourceType(FreeCounter, "SyncCounter"); | |
994 | if (RTCounter == 0) { | |
995 | return NULL; | |
996 | } | |
997 | xorg_list_init(&SysCounterList); | |
998 | } | |
999 | ||
1000 | pCounter = SyncCreateCounter(NULL, FakeClientID(0), initial); | |
1001 | ||
1002 | if (pCounter) { | |
1003 | SysCounterInfo *psci; | |
1004 | ||
1005 | psci = malloc(sizeof(SysCounterInfo)); | |
1006 | if (!psci) { | |
1007 | FreeResource(pCounter->sync.id, RT_NONE); | |
1008 | return pCounter; | |
1009 | } | |
1010 | pCounter->pSysCounterInfo = psci; | |
1011 | psci->pCounter = pCounter; | |
1012 | psci->name = strdup(name); | |
1013 | psci->resolution = resolution; | |
1014 | psci->counterType = counterType; | |
1015 | psci->QueryValue = QueryValue; | |
1016 | psci->BracketValues = BracketValues; | |
1017 | psci->private = NULL; | |
1018 | XSyncMaxValue(&psci->bracket_greater); | |
1019 | XSyncMinValue(&psci->bracket_less); | |
1020 | xorg_list_add(&psci->entry, &SysCounterList); | |
1021 | } | |
1022 | return pCounter; | |
1023 | } | |
1024 | ||
1025 | void | |
1026 | SyncDestroySystemCounter(pointer pSysCounter) | |
1027 | { | |
1028 | SyncCounter *pCounter = (SyncCounter *) pSysCounter; | |
1029 | ||
1030 | FreeResource(pCounter->sync.id, RT_NONE); | |
1031 | } | |
1032 | ||
1033 | static void | |
1034 | SyncComputeBracketValues(SyncCounter * pCounter) | |
1035 | { | |
1036 | SyncTriggerList *pCur; | |
1037 | SyncTrigger *pTrigger; | |
1038 | SysCounterInfo *psci; | |
1039 | CARD64 *pnewgtval = NULL; | |
1040 | CARD64 *pnewltval = NULL; | |
1041 | SyncCounterType ct; | |
1042 | ||
1043 | if (!pCounter) | |
1044 | return; | |
1045 | ||
1046 | psci = pCounter->pSysCounterInfo; | |
1047 | ct = pCounter->pSysCounterInfo->counterType; | |
1048 | if (ct == XSyncCounterNeverChanges) | |
1049 | return; | |
1050 | ||
1051 | XSyncMaxValue(&psci->bracket_greater); | |
1052 | XSyncMinValue(&psci->bracket_less); | |
1053 | ||
1054 | for (pCur = pCounter->sync.pTriglist; pCur; pCur = pCur->next) { | |
1055 | pTrigger = pCur->pTrigger; | |
1056 | ||
1057 | if (pTrigger->test_type == XSyncPositiveComparison && | |
1058 | ct != XSyncCounterNeverIncreases) { | |
1059 | if (XSyncValueLessThan(pCounter->value, pTrigger->test_value) && | |
1060 | XSyncValueLessThan(pTrigger->test_value, | |
1061 | psci->bracket_greater)) { | |
1062 | psci->bracket_greater = pTrigger->test_value; | |
1063 | pnewgtval = &psci->bracket_greater; | |
1064 | } | |
1065 | else if (XSyncValueGreaterThan(pCounter->value, pTrigger->test_value) && | |
1066 | XSyncValueGreaterThan(pTrigger->test_value, psci->bracket_less)) { | |
1067 | psci->bracket_less = pTrigger->test_value; | |
1068 | pnewltval = &psci->bracket_less; | |
1069 | } | |
1070 | } | |
1071 | else if (pTrigger->test_type == XSyncNegativeComparison && | |
1072 | ct != XSyncCounterNeverDecreases) { | |
1073 | if (XSyncValueGreaterThan(pCounter->value, pTrigger->test_value) && | |
1074 | XSyncValueGreaterThan(pTrigger->test_value, | |
1075 | psci->bracket_less)) { | |
1076 | psci->bracket_less = pTrigger->test_value; | |
1077 | pnewltval = &psci->bracket_less; | |
1078 | } | |
1079 | else if (XSyncValueLessThan(pCounter->value, pTrigger->test_value) && | |
1080 | XSyncValueLessThan(pTrigger->test_value, psci->bracket_greater)) { | |
1081 | psci->bracket_greater = pTrigger->test_value; | |
1082 | pnewgtval = &psci->bracket_greater; | |
1083 | } | |
1084 | } | |
1085 | else if (pTrigger->test_type == XSyncNegativeTransition && | |
1086 | ct != XSyncCounterNeverIncreases) { | |
1087 | if (XSyncValueGreaterOrEqual(pCounter->value, pTrigger->test_value) && | |
1088 | XSyncValueGreaterThan(pTrigger->test_value, psci->bracket_less)) { | |
1089 | /* | |
1090 | * If the value is exactly equal to our threshold, we want one | |
1091 | * more event in the negative direction to ensure we pick up | |
1092 | * when the value is less than this threshold. | |
1093 | */ | |
1094 | psci->bracket_less = pTrigger->test_value; | |
1095 | pnewltval = &psci->bracket_less; | |
1096 | } | |
1097 | else if (XSyncValueLessThan(pCounter->value, pTrigger->test_value) && | |
1098 | XSyncValueLessThan(pTrigger->test_value, psci->bracket_greater)) { | |
1099 | psci->bracket_greater = pTrigger->test_value; | |
1100 | pnewgtval = &psci->bracket_greater; | |
1101 | } | |
1102 | } | |
1103 | else if (pTrigger->test_type == XSyncPositiveTransition && | |
1104 | ct != XSyncCounterNeverDecreases) { | |
1105 | if (XSyncValueLessOrEqual(pCounter->value, pTrigger->test_value) && | |
1106 | XSyncValueLessThan(pTrigger->test_value, psci->bracket_greater)) { | |
1107 | /* | |
1108 | * If the value is exactly equal to our threshold, we | |
1109 | * want one more event in the positive direction to | |
1110 | * ensure we pick up when the value *exceeds* this | |
1111 | * threshold. | |
1112 | */ | |
1113 | psci->bracket_greater = pTrigger->test_value; | |
1114 | pnewgtval = &psci->bracket_greater; | |
1115 | } | |
1116 | else if (XSyncValueGreaterThan(pCounter->value, pTrigger->test_value) && | |
1117 | XSyncValueGreaterThan(pTrigger->test_value, psci->bracket_less)) { | |
1118 | psci->bracket_less = pTrigger->test_value; | |
1119 | pnewltval = &psci->bracket_less; | |
1120 | } | |
1121 | } | |
1122 | } /* end for each trigger */ | |
1123 | ||
1124 | (*psci->BracketValues) ((pointer) pCounter, pnewltval, pnewgtval); | |
1125 | ||
1126 | } | |
1127 | ||
1128 | /* | |
1129 | * ***** Resource delete functions | |
1130 | */ | |
1131 | ||
1132 | /* ARGSUSED */ | |
1133 | static int | |
1134 | FreeAlarm(void *addr, XID id) | |
1135 | { | |
1136 | SyncAlarm *pAlarm = (SyncAlarm *) addr; | |
1137 | ||
1138 | pAlarm->state = XSyncAlarmDestroyed; | |
1139 | ||
1140 | SyncSendAlarmNotifyEvents(pAlarm); | |
1141 | ||
1142 | /* delete event selections */ | |
1143 | ||
1144 | while (pAlarm->pEventClients) | |
1145 | FreeResource(pAlarm->pEventClients->delete_id, RT_NONE); | |
1146 | ||
1147 | SyncDeleteTriggerFromSyncObject(&pAlarm->trigger); | |
1148 | ||
1149 | free(pAlarm); | |
1150 | return Success; | |
1151 | } | |
1152 | ||
1153 | /* | |
1154 | * ** Cleanup after the destruction of a Counter | |
1155 | */ | |
1156 | /* ARGSUSED */ | |
1157 | static int | |
1158 | FreeCounter(void *env, XID id) | |
1159 | { | |
1160 | SyncCounter *pCounter = (SyncCounter *) env; | |
1161 | SyncTriggerList *ptl, *pnext; | |
1162 | ||
1163 | pCounter->sync.beingDestroyed = TRUE; | |
1164 | /* tell all the counter's triggers that the counter has been destroyed */ | |
1165 | for (ptl = pCounter->sync.pTriglist; ptl; ptl = pnext) { | |
1166 | (*ptl->pTrigger->CounterDestroyed) (ptl->pTrigger); | |
1167 | pnext = ptl->next; | |
1168 | free(ptl); /* destroy the trigger list as we go */ | |
1169 | } | |
1170 | if (IsSystemCounter(pCounter)) { | |
1171 | xorg_list_del(&pCounter->pSysCounterInfo->entry); | |
1172 | free(pCounter->pSysCounterInfo->name); | |
1173 | free(pCounter->pSysCounterInfo->private); | |
1174 | free(pCounter->pSysCounterInfo); | |
1175 | } | |
1176 | free(pCounter); | |
1177 | return Success; | |
1178 | } | |
1179 | ||
1180 | /* | |
1181 | * ** Cleanup after Await | |
1182 | */ | |
1183 | /* ARGSUSED */ | |
1184 | static int | |
1185 | FreeAwait(void *addr, XID id) | |
1186 | { | |
1187 | SyncAwaitUnion *pAwaitUnion = (SyncAwaitUnion *) addr; | |
1188 | SyncAwait *pAwait; | |
1189 | int numwaits; | |
1190 | ||
1191 | pAwait = &(pAwaitUnion + 1)->await; /* first await on list */ | |
1192 | ||
1193 | /* remove triggers from counters */ | |
1194 | ||
1195 | for (numwaits = pAwaitUnion->header.num_waitconditions; numwaits; | |
1196 | numwaits--, pAwait++) { | |
1197 | /* If the counter is being destroyed, FreeCounter will delete | |
1198 | * the trigger list itself, so don't do it here. | |
1199 | */ | |
1200 | SyncObject *pSync = pAwait->trigger.pSync; | |
1201 | ||
1202 | if (pSync && !pSync->beingDestroyed) | |
1203 | SyncDeleteTriggerFromSyncObject(&pAwait->trigger); | |
1204 | } | |
1205 | free(pAwaitUnion); | |
1206 | return Success; | |
1207 | } | |
1208 | ||
1209 | /* loosely based on dix/events.c/OtherClientGone */ | |
1210 | static int | |
1211 | FreeAlarmClient(void *value, XID id) | |
1212 | { | |
1213 | SyncAlarm *pAlarm = (SyncAlarm *) value; | |
1214 | SyncAlarmClientList *pCur, *pPrev; | |
1215 | ||
1216 | for (pPrev = NULL, pCur = pAlarm->pEventClients; | |
1217 | pCur; pPrev = pCur, pCur = pCur->next) { | |
1218 | if (pCur->delete_id == id) { | |
1219 | if (pPrev) | |
1220 | pPrev->next = pCur->next; | |
1221 | else | |
1222 | pAlarm->pEventClients = pCur->next; | |
1223 | free(pCur); | |
1224 | return Success; | |
1225 | } | |
1226 | } | |
1227 | FatalError("alarm client not on event list"); | |
1228 | /*NOTREACHED*/} | |
1229 | ||
1230 | /* | |
1231 | * ***** Proc functions | |
1232 | */ | |
1233 | ||
1234 | /* | |
1235 | * ** Initialize the extension | |
1236 | */ | |
1237 | static int | |
1238 | ProcSyncInitialize(ClientPtr client) | |
1239 | { | |
1240 | xSyncInitializeReply rep = { | |
1241 | .type = X_Reply, | |
1242 | .sequenceNumber = client->sequence, | |
1243 | .length = 0, | |
1244 | .majorVersion = SERVER_SYNC_MAJOR_VERSION, | |
1245 | .minorVersion = SERVER_SYNC_MINOR_VERSION, | |
1246 | }; | |
1247 | ||
1248 | REQUEST_SIZE_MATCH(xSyncInitializeReq); | |
1249 | ||
1250 | if (client->swapped) { | |
1251 | swaps(&rep.sequenceNumber); | |
1252 | } | |
1253 | WriteToClient(client, sizeof(rep), &rep); | |
1254 | return Success; | |
1255 | } | |
1256 | ||
1257 | /* | |
1258 | * ** Get list of system counters available through the extension | |
1259 | */ | |
1260 | static int | |
1261 | ProcSyncListSystemCounters(ClientPtr client) | |
1262 | { | |
1263 | xSyncListSystemCountersReply rep = { | |
1264 | .type = X_Reply, | |
1265 | .sequenceNumber = client->sequence, | |
1266 | .nCounters = 0, | |
1267 | }; | |
1268 | SysCounterInfo *psci; | |
1269 | int len = 0; | |
1270 | xSyncSystemCounter *list = NULL, *walklist = NULL; | |
1271 | ||
1272 | REQUEST_SIZE_MATCH(xSyncListSystemCountersReq); | |
1273 | ||
1274 | xorg_list_for_each_entry(psci, &SysCounterList, entry) { | |
1275 | /* pad to 4 byte boundary */ | |
1276 | len += pad_to_int32(sz_xSyncSystemCounter + strlen(psci->name)); | |
1277 | ++rep.nCounters; | |
1278 | } | |
1279 | ||
1280 | if (len) { | |
1281 | walklist = list = malloc(len); | |
1282 | if (!list) | |
1283 | return BadAlloc; | |
1284 | } | |
1285 | ||
1286 | rep.length = bytes_to_int32(len); | |
1287 | ||
1288 | if (client->swapped) { | |
1289 | swaps(&rep.sequenceNumber); | |
1290 | swapl(&rep.length); | |
1291 | swapl(&rep.nCounters); | |
1292 | } | |
1293 | ||
1294 | xorg_list_for_each_entry(psci, &SysCounterList, entry) { | |
1295 | int namelen; | |
1296 | char *pname_in_reply; | |
1297 | ||
1298 | walklist->counter = psci->pCounter->sync.id; | |
1299 | walklist->resolution_hi = XSyncValueHigh32(psci->resolution); | |
1300 | walklist->resolution_lo = XSyncValueLow32(psci->resolution); | |
1301 | namelen = strlen(psci->name); | |
1302 | walklist->name_length = namelen; | |
1303 | ||
1304 | if (client->swapped) { | |
1305 | swapl(&walklist->counter); | |
1306 | swapl(&walklist->resolution_hi); | |
1307 | swapl(&walklist->resolution_lo); | |
1308 | swaps(&walklist->name_length); | |
1309 | } | |
1310 | ||
1311 | pname_in_reply = ((char *) walklist) + sz_xSyncSystemCounter; | |
1312 | strncpy(pname_in_reply, psci->name, namelen); | |
1313 | walklist = (xSyncSystemCounter *) (((char *) walklist) + | |
1314 | pad_to_int32(sz_xSyncSystemCounter + | |
1315 | namelen)); | |
1316 | } | |
1317 | ||
1318 | WriteToClient(client, sizeof(rep), &rep); | |
1319 | if (len) { | |
1320 | WriteToClient(client, len, list); | |
1321 | free(list); | |
1322 | } | |
1323 | ||
1324 | return Success; | |
1325 | } | |
1326 | ||
1327 | /* | |
1328 | * ** Set client Priority | |
1329 | */ | |
1330 | static int | |
1331 | ProcSyncSetPriority(ClientPtr client) | |
1332 | { | |
1333 | REQUEST(xSyncSetPriorityReq); | |
1334 | ClientPtr priorityclient; | |
1335 | int rc; | |
1336 | ||
1337 | REQUEST_SIZE_MATCH(xSyncSetPriorityReq); | |
1338 | ||
1339 | if (stuff->id == None) | |
1340 | priorityclient = client; | |
1341 | else { | |
1342 | rc = dixLookupClient(&priorityclient, stuff->id, client, | |
1343 | DixSetAttrAccess); | |
1344 | if (rc != Success) | |
1345 | return rc; | |
1346 | } | |
1347 | ||
1348 | if (priorityclient->priority != stuff->priority) { | |
1349 | priorityclient->priority = stuff->priority; | |
1350 | ||
1351 | /* The following will force the server back into WaitForSomething | |
1352 | * so that the change in this client's priority is immediately | |
1353 | * reflected. | |
1354 | */ | |
1355 | isItTimeToYield = TRUE; | |
1356 | dispatchException |= DE_PRIORITYCHANGE; | |
1357 | } | |
1358 | return Success; | |
1359 | } | |
1360 | ||
1361 | /* | |
1362 | * ** Get client Priority | |
1363 | */ | |
1364 | static int | |
1365 | ProcSyncGetPriority(ClientPtr client) | |
1366 | { | |
1367 | REQUEST(xSyncGetPriorityReq); | |
1368 | xSyncGetPriorityReply rep; | |
1369 | ClientPtr priorityclient; | |
1370 | int rc; | |
1371 | ||
1372 | REQUEST_SIZE_MATCH(xSyncGetPriorityReq); | |
1373 | ||
1374 | if (stuff->id == None) | |
1375 | priorityclient = client; | |
1376 | else { | |
1377 | rc = dixLookupClient(&priorityclient, stuff->id, client, | |
1378 | DixGetAttrAccess); | |
1379 | if (rc != Success) | |
1380 | return rc; | |
1381 | } | |
1382 | ||
1383 | rep = (xSyncGetPriorityReply) { | |
1384 | .type = X_Reply, | |
1385 | .sequenceNumber = client->sequence, | |
1386 | .length = 0, | |
1387 | .priority = priorityclient->priority | |
1388 | }; | |
1389 | ||
1390 | if (client->swapped) { | |
1391 | swaps(&rep.sequenceNumber); | |
1392 | swapl(&rep.priority); | |
1393 | } | |
1394 | ||
1395 | WriteToClient(client, sizeof(xSyncGetPriorityReply), &rep); | |
1396 | ||
1397 | return Success; | |
1398 | } | |
1399 | ||
1400 | /* | |
1401 | * ** Create a new counter | |
1402 | */ | |
1403 | static int | |
1404 | ProcSyncCreateCounter(ClientPtr client) | |
1405 | { | |
1406 | REQUEST(xSyncCreateCounterReq); | |
1407 | CARD64 initial; | |
1408 | ||
1409 | REQUEST_SIZE_MATCH(xSyncCreateCounterReq); | |
1410 | ||
1411 | LEGAL_NEW_RESOURCE(stuff->cid, client); | |
1412 | ||
1413 | XSyncIntsToValue(&initial, stuff->initial_value_lo, | |
1414 | stuff->initial_value_hi); | |
1415 | if (!SyncCreateCounter(client, stuff->cid, initial)) | |
1416 | return BadAlloc; | |
1417 | ||
1418 | return Success; | |
1419 | } | |
1420 | ||
1421 | /* | |
1422 | * ** Set Counter value | |
1423 | */ | |
1424 | static int | |
1425 | ProcSyncSetCounter(ClientPtr client) | |
1426 | { | |
1427 | REQUEST(xSyncSetCounterReq); | |
1428 | SyncCounter *pCounter; | |
1429 | CARD64 newvalue; | |
1430 | int rc; | |
1431 | ||
1432 | REQUEST_SIZE_MATCH(xSyncSetCounterReq); | |
1433 | ||
1434 | rc = dixLookupResourceByType((pointer *) &pCounter, stuff->cid, RTCounter, | |
1435 | client, DixWriteAccess); | |
1436 | if (rc != Success) | |
1437 | return rc; | |
1438 | ||
1439 | if (IsSystemCounter(pCounter)) { | |
1440 | client->errorValue = stuff->cid; | |
1441 | return BadAccess; | |
1442 | } | |
1443 | ||
1444 | XSyncIntsToValue(&newvalue, stuff->value_lo, stuff->value_hi); | |
1445 | SyncChangeCounter(pCounter, newvalue); | |
1446 | return Success; | |
1447 | } | |
1448 | ||
1449 | /* | |
1450 | * ** Change Counter value | |
1451 | */ | |
1452 | static int | |
1453 | ProcSyncChangeCounter(ClientPtr client) | |
1454 | { | |
1455 | REQUEST(xSyncChangeCounterReq); | |
1456 | SyncCounter *pCounter; | |
1457 | CARD64 newvalue; | |
1458 | Bool overflow; | |
1459 | int rc; | |
1460 | ||
1461 | REQUEST_SIZE_MATCH(xSyncChangeCounterReq); | |
1462 | ||
1463 | rc = dixLookupResourceByType((pointer *) &pCounter, stuff->cid, RTCounter, | |
1464 | client, DixWriteAccess); | |
1465 | if (rc != Success) | |
1466 | return rc; | |
1467 | ||
1468 | if (IsSystemCounter(pCounter)) { | |
1469 | client->errorValue = stuff->cid; | |
1470 | return BadAccess; | |
1471 | } | |
1472 | ||
1473 | XSyncIntsToValue(&newvalue, stuff->value_lo, stuff->value_hi); | |
1474 | XSyncValueAdd(&newvalue, pCounter->value, newvalue, &overflow); | |
1475 | if (overflow) { | |
1476 | /* XXX 64 bit value can't fit in 32 bits; do the best we can */ | |
1477 | client->errorValue = stuff->value_hi; | |
1478 | return BadValue; | |
1479 | } | |
1480 | SyncChangeCounter(pCounter, newvalue); | |
1481 | return Success; | |
1482 | } | |
1483 | ||
1484 | /* | |
1485 | * ** Destroy a counter | |
1486 | */ | |
1487 | static int | |
1488 | ProcSyncDestroyCounter(ClientPtr client) | |
1489 | { | |
1490 | REQUEST(xSyncDestroyCounterReq); | |
1491 | SyncCounter *pCounter; | |
1492 | int rc; | |
1493 | ||
1494 | REQUEST_SIZE_MATCH(xSyncDestroyCounterReq); | |
1495 | ||
1496 | rc = dixLookupResourceByType((pointer *) &pCounter, stuff->counter, | |
1497 | RTCounter, client, DixDestroyAccess); | |
1498 | if (rc != Success) | |
1499 | return rc; | |
1500 | ||
1501 | if (IsSystemCounter(pCounter)) { | |
1502 | client->errorValue = stuff->counter; | |
1503 | return BadAccess; | |
1504 | } | |
1505 | FreeResource(pCounter->sync.id, RT_NONE); | |
1506 | return Success; | |
1507 | } | |
1508 | ||
1509 | static SyncAwaitUnion * | |
1510 | SyncAwaitPrologue(ClientPtr client, int items) | |
1511 | { | |
1512 | SyncAwaitUnion *pAwaitUnion; | |
1513 | ||
1514 | /* all the memory for the entire await list is allocated | |
1515 | * here in one chunk | |
1516 | */ | |
1517 | pAwaitUnion = malloc((items + 1) * sizeof(SyncAwaitUnion)); | |
1518 | if (!pAwaitUnion) | |
1519 | return NULL; | |
1520 | ||
1521 | /* first item is the header, remainder are real wait conditions */ | |
1522 | ||
1523 | pAwaitUnion->header.delete_id = FakeClientID(client->index); | |
1524 | pAwaitUnion->header.client = client; | |
1525 | pAwaitUnion->header.num_waitconditions = 0; | |
1526 | ||
1527 | if (!AddResource(pAwaitUnion->header.delete_id, RTAwait, pAwaitUnion)) | |
1528 | return NULL; | |
1529 | ||
1530 | return pAwaitUnion; | |
1531 | } | |
1532 | ||
1533 | static void | |
1534 | SyncAwaitEpilogue(ClientPtr client, int items, SyncAwaitUnion * pAwaitUnion) | |
1535 | { | |
1536 | SyncAwait *pAwait; | |
1537 | int i; | |
1538 | ||
1539 | IgnoreClient(client); | |
1540 | ||
1541 | /* see if any of the triggers are already true */ | |
1542 | ||
1543 | pAwait = &(pAwaitUnion + 1)->await; /* skip over header */ | |
1544 | for (i = 0; i < items; i++, pAwait++) { | |
1545 | CARD64 value; | |
1546 | ||
1547 | /* don't have to worry about NULL counters because the request | |
1548 | * errors before we get here out if they occur | |
1549 | */ | |
1550 | switch (pAwait->trigger.pSync->type) { | |
1551 | case SYNC_COUNTER: | |
1552 | value = ((SyncCounter *) pAwait->trigger.pSync)->value; | |
1553 | break; | |
1554 | default: | |
1555 | XSyncIntToValue(&value, 0); | |
1556 | } | |
1557 | ||
1558 | if ((*pAwait->trigger.CheckTrigger) (&pAwait->trigger, value)) { | |
1559 | (*pAwait->trigger.TriggerFired) (&pAwait->trigger); | |
1560 | break; /* once is enough */ | |
1561 | } | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | /* | |
1566 | * ** Await | |
1567 | */ | |
1568 | static int | |
1569 | ProcSyncAwait(ClientPtr client) | |
1570 | { | |
1571 | REQUEST(xSyncAwaitReq); | |
1572 | int len, items; | |
1573 | int i; | |
1574 | xSyncWaitCondition *pProtocolWaitConds; | |
1575 | SyncAwaitUnion *pAwaitUnion; | |
1576 | SyncAwait *pAwait; | |
1577 | int status; | |
1578 | ||
1579 | REQUEST_AT_LEAST_SIZE(xSyncAwaitReq); | |
1580 | ||
1581 | len = client->req_len << 2; | |
1582 | len -= sz_xSyncAwaitReq; | |
1583 | items = len / sz_xSyncWaitCondition; | |
1584 | ||
1585 | if (items * sz_xSyncWaitCondition != len) { | |
1586 | return BadLength; | |
1587 | } | |
1588 | if (items == 0) { | |
1589 | client->errorValue = items; /* XXX protocol change */ | |
1590 | return BadValue; | |
1591 | } | |
1592 | ||
1593 | if (!(pAwaitUnion = SyncAwaitPrologue(client, items))) | |
1594 | return BadAlloc; | |
1595 | ||
1596 | /* don't need to do any more memory allocation for this request! */ | |
1597 | ||
1598 | pProtocolWaitConds = (xSyncWaitCondition *) &stuff[1]; | |
1599 | ||
1600 | pAwait = &(pAwaitUnion + 1)->await; /* skip over header */ | |
1601 | for (i = 0; i < items; i++, pProtocolWaitConds++, pAwait++) { | |
1602 | if (pProtocolWaitConds->counter == None) { /* XXX protocol change */ | |
1603 | /* this should take care of removing any triggers created by | |
1604 | * this request that have already been registered on sync objects | |
1605 | */ | |
1606 | FreeResource(pAwaitUnion->header.delete_id, RT_NONE); | |
1607 | client->errorValue = pProtocolWaitConds->counter; | |
1608 | return SyncErrorBase + XSyncBadCounter; | |
1609 | } | |
1610 | ||
1611 | /* sanity checks are in SyncInitTrigger */ | |
1612 | pAwait->trigger.pSync = NULL; | |
1613 | pAwait->trigger.value_type = pProtocolWaitConds->value_type; | |
1614 | XSyncIntsToValue(&pAwait->trigger.wait_value, | |
1615 | pProtocolWaitConds->wait_value_lo, | |
1616 | pProtocolWaitConds->wait_value_hi); | |
1617 | pAwait->trigger.test_type = pProtocolWaitConds->test_type; | |
1618 | ||
1619 | status = SyncInitTrigger(client, &pAwait->trigger, | |
1620 | pProtocolWaitConds->counter, RTCounter, | |
1621 | XSyncCAAllTrigger); | |
1622 | if (status != Success) { | |
1623 | /* this should take care of removing any triggers created by | |
1624 | * this request that have already been registered on sync objects | |
1625 | */ | |
1626 | FreeResource(pAwaitUnion->header.delete_id, RT_NONE); | |
1627 | return status; | |
1628 | } | |
1629 | /* this is not a mistake -- same function works for both cases */ | |
1630 | pAwait->trigger.TriggerFired = SyncAwaitTriggerFired; | |
1631 | pAwait->trigger.CounterDestroyed = SyncAwaitTriggerFired; | |
1632 | XSyncIntsToValue(&pAwait->event_threshold, | |
1633 | pProtocolWaitConds->event_threshold_lo, | |
1634 | pProtocolWaitConds->event_threshold_hi); | |
1635 | pAwait->pHeader = &pAwaitUnion->header; | |
1636 | pAwaitUnion->header.num_waitconditions++; | |
1637 | } | |
1638 | ||
1639 | SyncAwaitEpilogue(client, items, pAwaitUnion); | |
1640 | ||
1641 | return Success; | |
1642 | } | |
1643 | ||
1644 | /* | |
1645 | * ** Query a counter | |
1646 | */ | |
1647 | static int | |
1648 | ProcSyncQueryCounter(ClientPtr client) | |
1649 | { | |
1650 | REQUEST(xSyncQueryCounterReq); | |
1651 | xSyncQueryCounterReply rep; | |
1652 | SyncCounter *pCounter; | |
1653 | int rc; | |
1654 | ||
1655 | REQUEST_SIZE_MATCH(xSyncQueryCounterReq); | |
1656 | ||
1657 | rc = dixLookupResourceByType((pointer *) &pCounter, stuff->counter, | |
1658 | RTCounter, client, DixReadAccess); | |
1659 | if (rc != Success) | |
1660 | return rc; | |
1661 | ||
1662 | /* if system counter, ask it what the current value is */ | |
1663 | if (IsSystemCounter(pCounter)) { | |
1664 | (*pCounter->pSysCounterInfo->QueryValue) ((pointer) pCounter, | |
1665 | &pCounter->value); | |
1666 | } | |
1667 | ||
1668 | rep = (xSyncQueryCounterReply) { | |
1669 | .type = X_Reply, | |
1670 | .sequenceNumber = client->sequence, | |
1671 | .length = 0, | |
1672 | .value_hi = XSyncValueHigh32(pCounter->value), | |
1673 | .value_lo = XSyncValueLow32(pCounter->value) | |
1674 | }; | |
1675 | ||
1676 | if (client->swapped) { | |
1677 | swaps(&rep.sequenceNumber); | |
1678 | swapl(&rep.length); | |
1679 | swapl(&rep.value_hi); | |
1680 | swapl(&rep.value_lo); | |
1681 | } | |
1682 | WriteToClient(client, sizeof(xSyncQueryCounterReply), &rep); | |
1683 | return Success; | |
1684 | } | |
1685 | ||
1686 | /* | |
1687 | * ** Create Alarm | |
1688 | */ | |
1689 | static int | |
1690 | ProcSyncCreateAlarm(ClientPtr client) | |
1691 | { | |
1692 | REQUEST(xSyncCreateAlarmReq); | |
1693 | SyncAlarm *pAlarm; | |
1694 | int status; | |
1695 | unsigned long len, vmask; | |
1696 | SyncTrigger *pTrigger; | |
1697 | ||
1698 | REQUEST_AT_LEAST_SIZE(xSyncCreateAlarmReq); | |
1699 | ||
1700 | LEGAL_NEW_RESOURCE(stuff->id, client); | |
1701 | ||
1702 | vmask = stuff->valueMask; | |
1703 | len = client->req_len - bytes_to_int32(sizeof(xSyncCreateAlarmReq)); | |
1704 | /* the "extra" call to Ones accounts for the presence of 64 bit values */ | |
1705 | if (len != (Ones(vmask) + Ones(vmask & (XSyncCAValue | XSyncCADelta)))) | |
1706 | return BadLength; | |
1707 | ||
1708 | if (!(pAlarm = malloc(sizeof(SyncAlarm)))) { | |
1709 | return BadAlloc; | |
1710 | } | |
1711 | ||
1712 | /* set up defaults */ | |
1713 | ||
1714 | pTrigger = &pAlarm->trigger; | |
1715 | pTrigger->pSync = NULL; | |
1716 | pTrigger->value_type = XSyncAbsolute; | |
1717 | XSyncIntToValue(&pTrigger->wait_value, 0L); | |
1718 | pTrigger->test_type = XSyncPositiveComparison; | |
1719 | pTrigger->TriggerFired = SyncAlarmTriggerFired; | |
1720 | pTrigger->CounterDestroyed = SyncAlarmCounterDestroyed; | |
1721 | status = SyncInitTrigger(client, pTrigger, None, RTCounter, | |
1722 | XSyncCAAllTrigger); | |
1723 | if (status != Success) { | |
1724 | free(pAlarm); | |
1725 | return status; | |
1726 | } | |
1727 | ||
1728 | pAlarm->client = client; | |
1729 | pAlarm->alarm_id = stuff->id; | |
1730 | XSyncIntToValue(&pAlarm->delta, 1L); | |
1731 | pAlarm->events = TRUE; | |
1732 | pAlarm->state = XSyncAlarmInactive; | |
1733 | pAlarm->pEventClients = NULL; | |
1734 | status = SyncChangeAlarmAttributes(client, pAlarm, vmask, | |
1735 | (CARD32 *) &stuff[1]); | |
1736 | if (status != Success) { | |
1737 | free(pAlarm); | |
1738 | return status; | |
1739 | } | |
1740 | ||
1741 | if (!AddResource(stuff->id, RTAlarm, pAlarm)) | |
1742 | return BadAlloc; | |
1743 | ||
1744 | /* see if alarm already triggered. NULL counter will not trigger | |
1745 | * in CreateAlarm and sets alarm state to Inactive. | |
1746 | */ | |
1747 | ||
1748 | if (!pTrigger->pSync) { | |
1749 | pAlarm->state = XSyncAlarmInactive; /* XXX protocol change */ | |
1750 | } | |
1751 | else { | |
1752 | SyncCounter *pCounter; | |
1753 | ||
1754 | if (!SyncCheckWarnIsCounter(pTrigger->pSync, | |
1755 | WARN_INVALID_COUNTER_ALARM)) { | |
1756 | FreeResource(stuff->id, RT_NONE); | |
1757 | return BadAlloc; | |
1758 | } | |
1759 | ||
1760 | pCounter = (SyncCounter *) pTrigger->pSync; | |
1761 | ||
1762 | if ((*pTrigger->CheckTrigger) (pTrigger, pCounter->value)) | |
1763 | (*pTrigger->TriggerFired) (pTrigger); | |
1764 | } | |
1765 | ||
1766 | return Success; | |
1767 | } | |
1768 | ||
1769 | /* | |
1770 | * ** Change Alarm | |
1771 | */ | |
1772 | static int | |
1773 | ProcSyncChangeAlarm(ClientPtr client) | |
1774 | { | |
1775 | REQUEST(xSyncChangeAlarmReq); | |
1776 | SyncAlarm *pAlarm; | |
1777 | SyncCounter *pCounter = NULL; | |
1778 | long vmask; | |
1779 | int len, status; | |
1780 | ||
1781 | REQUEST_AT_LEAST_SIZE(xSyncChangeAlarmReq); | |
1782 | ||
1783 | status = dixLookupResourceByType((pointer *) &pAlarm, stuff->alarm, RTAlarm, | |
1784 | client, DixWriteAccess); | |
1785 | if (status != Success) | |
1786 | return status; | |
1787 | ||
1788 | vmask = stuff->valueMask; | |
1789 | len = client->req_len - bytes_to_int32(sizeof(xSyncChangeAlarmReq)); | |
1790 | /* the "extra" call to Ones accounts for the presence of 64 bit values */ | |
1791 | if (len != (Ones(vmask) + Ones(vmask & (XSyncCAValue | XSyncCADelta)))) | |
1792 | return BadLength; | |
1793 | ||
1794 | if ((status = SyncChangeAlarmAttributes(client, pAlarm, vmask, | |
1795 | (CARD32 *) &stuff[1])) != Success) | |
1796 | return status; | |
1797 | ||
1798 | if (SyncCheckWarnIsCounter(pAlarm->trigger.pSync, | |
1799 | WARN_INVALID_COUNTER_ALARM)) | |
1800 | pCounter = (SyncCounter *) pAlarm->trigger.pSync; | |
1801 | ||
1802 | /* see if alarm already triggered. NULL counter WILL trigger | |
1803 | * in ChangeAlarm. | |
1804 | */ | |
1805 | ||
1806 | if (!pCounter || | |
1807 | (*pAlarm->trigger.CheckTrigger) (&pAlarm->trigger, pCounter->value)) { | |
1808 | (*pAlarm->trigger.TriggerFired) (&pAlarm->trigger); | |
1809 | } | |
1810 | return Success; | |
1811 | } | |
1812 | ||
1813 | static int | |
1814 | ProcSyncQueryAlarm(ClientPtr client) | |
1815 | { | |
1816 | REQUEST(xSyncQueryAlarmReq); | |
1817 | SyncAlarm *pAlarm; | |
1818 | xSyncQueryAlarmReply rep; | |
1819 | SyncTrigger *pTrigger; | |
1820 | int rc; | |
1821 | ||
1822 | REQUEST_SIZE_MATCH(xSyncQueryAlarmReq); | |
1823 | ||
1824 | rc = dixLookupResourceByType((pointer *) &pAlarm, stuff->alarm, RTAlarm, | |
1825 | client, DixReadAccess); | |
1826 | if (rc != Success) | |
1827 | return rc; | |
1828 | ||
1829 | pTrigger = &pAlarm->trigger; | |
1830 | rep = (xSyncQueryAlarmReply) { | |
1831 | .type = X_Reply, | |
1832 | .sequenceNumber = client->sequence, | |
1833 | .length = | |
1834 | bytes_to_int32(sizeof(xSyncQueryAlarmReply) - sizeof(xGenericReply)), | |
1835 | .counter = (pTrigger->pSync) ? pTrigger->pSync->id : None, | |
1836 | ||
1837 | #if 0 /* XXX unclear what to do, depends on whether relative value-types | |
1838 | * are "consumed" immediately and are considered absolute from then | |
1839 | * on. | |
1840 | */ | |
1841 | .value_type = pTrigger->value_type, | |
1842 | .wait_value_hi = XSyncValueHigh32(pTrigger->wait_value), | |
1843 | .wait_value_lo = XSyncValueLow32(pTrigger->wait_value), | |
1844 | #else | |
1845 | .value_type = XSyncAbsolute, | |
1846 | .wait_value_hi = XSyncValueHigh32(pTrigger->test_value), | |
1847 | .wait_value_lo = XSyncValueLow32(pTrigger->test_value), | |
1848 | #endif | |
1849 | ||
1850 | .test_type = pTrigger->test_type, | |
1851 | .delta_hi = XSyncValueHigh32(pAlarm->delta), | |
1852 | .delta_lo = XSyncValueLow32(pAlarm->delta), | |
1853 | .events = pAlarm->events, | |
1854 | .state = pAlarm->state | |
1855 | }; | |
1856 | ||
1857 | if (client->swapped) { | |
1858 | swaps(&rep.sequenceNumber); | |
1859 | swapl(&rep.length); | |
1860 | swapl(&rep.counter); | |
1861 | swapl(&rep.wait_value_hi); | |
1862 | swapl(&rep.wait_value_lo); | |
1863 | swapl(&rep.test_type); | |
1864 | swapl(&rep.delta_hi); | |
1865 | swapl(&rep.delta_lo); | |
1866 | } | |
1867 | ||
1868 | WriteToClient(client, sizeof(xSyncQueryAlarmReply), &rep); | |
1869 | return Success; | |
1870 | } | |
1871 | ||
1872 | static int | |
1873 | ProcSyncDestroyAlarm(ClientPtr client) | |
1874 | { | |
1875 | SyncAlarm *pAlarm; | |
1876 | int rc; | |
1877 | ||
1878 | REQUEST(xSyncDestroyAlarmReq); | |
1879 | ||
1880 | REQUEST_SIZE_MATCH(xSyncDestroyAlarmReq); | |
1881 | ||
1882 | rc = dixLookupResourceByType((pointer *) &pAlarm, stuff->alarm, RTAlarm, | |
1883 | client, DixDestroyAccess); | |
1884 | if (rc != Success) | |
1885 | return rc; | |
1886 | ||
1887 | FreeResource(stuff->alarm, RT_NONE); | |
1888 | return Success; | |
1889 | } | |
1890 | ||
1891 | static int | |
1892 | ProcSyncCreateFence(ClientPtr client) | |
1893 | { | |
1894 | REQUEST(xSyncCreateFenceReq); | |
1895 | DrawablePtr pDraw; | |
1896 | SyncFence *pFence; | |
1897 | int rc; | |
1898 | ||
1899 | REQUEST_SIZE_MATCH(xSyncCreateFenceReq); | |
1900 | ||
1901 | rc = dixLookupDrawable(&pDraw, stuff->d, client, M_ANY, DixGetAttrAccess); | |
1902 | if (rc != Success) | |
1903 | return rc; | |
1904 | ||
1905 | LEGAL_NEW_RESOURCE(stuff->fid, client); | |
1906 | ||
1907 | if (!(pFence = (SyncFence *) SyncCreate(client, stuff->fid, SYNC_FENCE))) | |
1908 | return BadAlloc; | |
1909 | ||
1910 | miSyncInitFence(pDraw->pScreen, pFence, stuff->initially_triggered); | |
1911 | ||
1912 | if (!AddResource(stuff->fid, RTFence, (pointer) pFence)) | |
1913 | return BadAlloc; | |
1914 | ||
1915 | return client->noClientException; | |
1916 | } | |
1917 | ||
1918 | static int | |
1919 | FreeFence(void *obj, XID id) | |
1920 | { | |
1921 | SyncFence *pFence = (SyncFence *) obj; | |
1922 | ||
1923 | miSyncDestroyFence(pFence); | |
1924 | ||
1925 | return Success; | |
1926 | } | |
1927 | ||
1928 | int | |
1929 | SyncVerifyFence(SyncFence ** ppSyncFence, XID fid, ClientPtr client, Mask mode) | |
1930 | { | |
1931 | int rc = dixLookupResourceByType((pointer *) ppSyncFence, fid, RTFence, | |
1932 | client, mode); | |
1933 | ||
1934 | if (rc != Success) | |
1935 | client->errorValue = fid; | |
1936 | ||
1937 | return rc; | |
1938 | } | |
1939 | ||
1940 | static int | |
1941 | ProcSyncTriggerFence(ClientPtr client) | |
1942 | { | |
1943 | REQUEST(xSyncTriggerFenceReq); | |
1944 | SyncFence *pFence; | |
1945 | int rc; | |
1946 | ||
1947 | REQUEST_SIZE_MATCH(xSyncTriggerFenceReq); | |
1948 | ||
1949 | rc = dixLookupResourceByType((pointer *) &pFence, stuff->fid, RTFence, | |
1950 | client, DixWriteAccess); | |
1951 | if (rc != Success) | |
1952 | return rc; | |
1953 | ||
1954 | miSyncTriggerFence(pFence); | |
1955 | ||
1956 | return client->noClientException; | |
1957 | } | |
1958 | ||
1959 | static int | |
1960 | ProcSyncResetFence(ClientPtr client) | |
1961 | { | |
1962 | REQUEST(xSyncResetFenceReq); | |
1963 | SyncFence *pFence; | |
1964 | int rc; | |
1965 | ||
1966 | REQUEST_SIZE_MATCH(xSyncResetFenceReq); | |
1967 | ||
1968 | rc = dixLookupResourceByType((pointer *) &pFence, stuff->fid, RTFence, | |
1969 | client, DixWriteAccess); | |
1970 | if (rc != Success) | |
1971 | return rc; | |
1972 | ||
1973 | if (pFence->funcs.CheckTriggered(pFence) != TRUE) | |
1974 | return BadMatch; | |
1975 | ||
1976 | pFence->funcs.Reset(pFence); | |
1977 | ||
1978 | return client->noClientException; | |
1979 | } | |
1980 | ||
1981 | static int | |
1982 | ProcSyncDestroyFence(ClientPtr client) | |
1983 | { | |
1984 | REQUEST(xSyncDestroyFenceReq); | |
1985 | SyncFence *pFence; | |
1986 | int rc; | |
1987 | ||
1988 | REQUEST_SIZE_MATCH(xSyncDestroyFenceReq); | |
1989 | ||
1990 | rc = dixLookupResourceByType((pointer *) &pFence, stuff->fid, RTFence, | |
1991 | client, DixDestroyAccess); | |
1992 | if (rc != Success) | |
1993 | return rc; | |
1994 | ||
1995 | FreeResource(stuff->fid, RT_NONE); | |
1996 | return client->noClientException; | |
1997 | } | |
1998 | ||
1999 | static int | |
2000 | ProcSyncQueryFence(ClientPtr client) | |
2001 | { | |
2002 | REQUEST(xSyncQueryFenceReq); | |
2003 | xSyncQueryFenceReply rep; | |
2004 | SyncFence *pFence; | |
2005 | int rc; | |
2006 | ||
2007 | REQUEST_SIZE_MATCH(xSyncQueryFenceReq); | |
2008 | ||
2009 | rc = dixLookupResourceByType((pointer *) &pFence, stuff->fid, | |
2010 | RTFence, client, DixReadAccess); | |
2011 | if (rc != Success) | |
2012 | return rc; | |
2013 | ||
2014 | rep = (xSyncQueryFenceReply) { | |
2015 | .type = X_Reply, | |
2016 | .sequenceNumber = client->sequence, | |
2017 | .length = 0, | |
2018 | ||
2019 | .triggered = pFence->funcs.CheckTriggered(pFence) | |
2020 | }; | |
2021 | ||
2022 | if (client->swapped) { | |
2023 | swaps(&rep.sequenceNumber); | |
2024 | swapl(&rep.length); | |
2025 | } | |
2026 | ||
2027 | WriteToClient(client, sizeof(xSyncQueryFenceReply), &rep); | |
2028 | return client->noClientException; | |
2029 | } | |
2030 | ||
2031 | static int | |
2032 | ProcSyncAwaitFence(ClientPtr client) | |
2033 | { | |
2034 | REQUEST(xSyncAwaitFenceReq); | |
2035 | SyncAwaitUnion *pAwaitUnion; | |
2036 | SyncAwait *pAwait; | |
2037 | ||
2038 | /* Use CARD32 rather than XSyncFence because XIDs are hard-coded to | |
2039 | * CARD32 in protocol definitions */ | |
2040 | CARD32 *pProtocolFences; | |
2041 | int status; | |
2042 | int len; | |
2043 | int items; | |
2044 | int i; | |
2045 | ||
2046 | REQUEST_AT_LEAST_SIZE(xSyncAwaitFenceReq); | |
2047 | ||
2048 | len = client->req_len << 2; | |
2049 | len -= sz_xSyncAwaitFenceReq; | |
2050 | items = len / sizeof(CARD32); | |
2051 | ||
2052 | if (items * sizeof(CARD32) != len) { | |
2053 | return BadLength; | |
2054 | } | |
2055 | if (items == 0) { | |
2056 | client->errorValue = items; | |
2057 | return BadValue; | |
2058 | } | |
2059 | ||
2060 | if (!(pAwaitUnion = SyncAwaitPrologue(client, items))) | |
2061 | return BadAlloc; | |
2062 | ||
2063 | /* don't need to do any more memory allocation for this request! */ | |
2064 | ||
2065 | pProtocolFences = (CARD32 *) &stuff[1]; | |
2066 | ||
2067 | pAwait = &(pAwaitUnion + 1)->await; /* skip over header */ | |
2068 | for (i = 0; i < items; i++, pProtocolFences++, pAwait++) { | |
2069 | if (*pProtocolFences == None) { | |
2070 | /* this should take care of removing any triggers created by | |
2071 | * this request that have already been registered on sync objects | |
2072 | */ | |
2073 | FreeResource(pAwaitUnion->header.delete_id, RT_NONE); | |
2074 | client->errorValue = *pProtocolFences; | |
2075 | return SyncErrorBase + XSyncBadFence; | |
2076 | } | |
2077 | ||
2078 | pAwait->trigger.pSync = NULL; | |
2079 | /* Provide acceptable values for these unused fields to | |
2080 | * satisfy SyncInitTrigger's validation logic | |
2081 | */ | |
2082 | pAwait->trigger.value_type = XSyncAbsolute; | |
2083 | XSyncIntToValue(&pAwait->trigger.wait_value, 0); | |
2084 | pAwait->trigger.test_type = 0; | |
2085 | ||
2086 | status = SyncInitTrigger(client, &pAwait->trigger, | |
2087 | *pProtocolFences, RTFence, XSyncCAAllTrigger); | |
2088 | if (status != Success) { | |
2089 | /* this should take care of removing any triggers created by | |
2090 | * this request that have already been registered on sync objects | |
2091 | */ | |
2092 | FreeResource(pAwaitUnion->header.delete_id, RT_NONE); | |
2093 | return status; | |
2094 | } | |
2095 | /* this is not a mistake -- same function works for both cases */ | |
2096 | pAwait->trigger.TriggerFired = SyncAwaitTriggerFired; | |
2097 | pAwait->trigger.CounterDestroyed = SyncAwaitTriggerFired; | |
2098 | /* event_threshold is unused for fence syncs */ | |
2099 | XSyncIntToValue(&pAwait->event_threshold, 0); | |
2100 | pAwait->pHeader = &pAwaitUnion->header; | |
2101 | pAwaitUnion->header.num_waitconditions++; | |
2102 | } | |
2103 | ||
2104 | SyncAwaitEpilogue(client, items, pAwaitUnion); | |
2105 | ||
2106 | return client->noClientException; | |
2107 | } | |
2108 | ||
2109 | /* | |
2110 | * ** Given an extension request, call the appropriate request procedure | |
2111 | */ | |
2112 | static int | |
2113 | ProcSyncDispatch(ClientPtr client) | |
2114 | { | |
2115 | REQUEST(xReq); | |
2116 | ||
2117 | switch (stuff->data) { | |
2118 | case X_SyncInitialize: | |
2119 | return ProcSyncInitialize(client); | |
2120 | case X_SyncListSystemCounters: | |
2121 | return ProcSyncListSystemCounters(client); | |
2122 | case X_SyncCreateCounter: | |
2123 | return ProcSyncCreateCounter(client); | |
2124 | case X_SyncSetCounter: | |
2125 | return ProcSyncSetCounter(client); | |
2126 | case X_SyncChangeCounter: | |
2127 | return ProcSyncChangeCounter(client); | |
2128 | case X_SyncQueryCounter: | |
2129 | return ProcSyncQueryCounter(client); | |
2130 | case X_SyncDestroyCounter: | |
2131 | return ProcSyncDestroyCounter(client); | |
2132 | case X_SyncAwait: | |
2133 | return ProcSyncAwait(client); | |
2134 | case X_SyncCreateAlarm: | |
2135 | return ProcSyncCreateAlarm(client); | |
2136 | case X_SyncChangeAlarm: | |
2137 | return ProcSyncChangeAlarm(client); | |
2138 | case X_SyncQueryAlarm: | |
2139 | return ProcSyncQueryAlarm(client); | |
2140 | case X_SyncDestroyAlarm: | |
2141 | return ProcSyncDestroyAlarm(client); | |
2142 | case X_SyncSetPriority: | |
2143 | return ProcSyncSetPriority(client); | |
2144 | case X_SyncGetPriority: | |
2145 | return ProcSyncGetPriority(client); | |
2146 | case X_SyncCreateFence: | |
2147 | return ProcSyncCreateFence(client); | |
2148 | case X_SyncTriggerFence: | |
2149 | return ProcSyncTriggerFence(client); | |
2150 | case X_SyncResetFence: | |
2151 | return ProcSyncResetFence(client); | |
2152 | case X_SyncDestroyFence: | |
2153 | return ProcSyncDestroyFence(client); | |
2154 | case X_SyncQueryFence: | |
2155 | return ProcSyncQueryFence(client); | |
2156 | case X_SyncAwaitFence: | |
2157 | return ProcSyncAwaitFence(client); | |
2158 | default: | |
2159 | return BadRequest; | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | /* | |
2164 | * Boring Swapping stuff ... | |
2165 | */ | |
2166 | ||
2167 | static int | |
2168 | SProcSyncInitialize(ClientPtr client) | |
2169 | { | |
2170 | REQUEST(xSyncInitializeReq); | |
2171 | swaps(&stuff->length); | |
2172 | REQUEST_SIZE_MATCH(xSyncInitializeReq); | |
2173 | ||
2174 | return ProcSyncInitialize(client); | |
2175 | } | |
2176 | ||
2177 | static int | |
2178 | SProcSyncListSystemCounters(ClientPtr client) | |
2179 | { | |
2180 | REQUEST(xSyncListSystemCountersReq); | |
2181 | swaps(&stuff->length); | |
2182 | REQUEST_SIZE_MATCH(xSyncListSystemCountersReq); | |
2183 | ||
2184 | return ProcSyncListSystemCounters(client); | |
2185 | } | |
2186 | ||
2187 | static int | |
2188 | SProcSyncCreateCounter(ClientPtr client) | |
2189 | { | |
2190 | REQUEST(xSyncCreateCounterReq); | |
2191 | swaps(&stuff->length); | |
2192 | REQUEST_SIZE_MATCH(xSyncCreateCounterReq); | |
2193 | swapl(&stuff->cid); | |
2194 | swapl(&stuff->initial_value_lo); | |
2195 | swapl(&stuff->initial_value_hi); | |
2196 | ||
2197 | return ProcSyncCreateCounter(client); | |
2198 | } | |
2199 | ||
2200 | static int | |
2201 | SProcSyncSetCounter(ClientPtr client) | |
2202 | { | |
2203 | REQUEST(xSyncSetCounterReq); | |
2204 | swaps(&stuff->length); | |
2205 | REQUEST_SIZE_MATCH(xSyncSetCounterReq); | |
2206 | swapl(&stuff->cid); | |
2207 | swapl(&stuff->value_lo); | |
2208 | swapl(&stuff->value_hi); | |
2209 | ||
2210 | return ProcSyncSetCounter(client); | |
2211 | } | |
2212 | ||
2213 | static int | |
2214 | SProcSyncChangeCounter(ClientPtr client) | |
2215 | { | |
2216 | REQUEST(xSyncChangeCounterReq); | |
2217 | swaps(&stuff->length); | |
2218 | REQUEST_SIZE_MATCH(xSyncChangeCounterReq); | |
2219 | swapl(&stuff->cid); | |
2220 | swapl(&stuff->value_lo); | |
2221 | swapl(&stuff->value_hi); | |
2222 | ||
2223 | return ProcSyncChangeCounter(client); | |
2224 | } | |
2225 | ||
2226 | static int | |
2227 | SProcSyncQueryCounter(ClientPtr client) | |
2228 | { | |
2229 | REQUEST(xSyncQueryCounterReq); | |
2230 | swaps(&stuff->length); | |
2231 | REQUEST_SIZE_MATCH(xSyncQueryCounterReq); | |
2232 | swapl(&stuff->counter); | |
2233 | ||
2234 | return ProcSyncQueryCounter(client); | |
2235 | } | |
2236 | ||
2237 | static int | |
2238 | SProcSyncDestroyCounter(ClientPtr client) | |
2239 | { | |
2240 | REQUEST(xSyncDestroyCounterReq); | |
2241 | swaps(&stuff->length); | |
2242 | REQUEST_SIZE_MATCH(xSyncDestroyCounterReq); | |
2243 | swapl(&stuff->counter); | |
2244 | ||
2245 | return ProcSyncDestroyCounter(client); | |
2246 | } | |
2247 | ||
2248 | static int | |
2249 | SProcSyncAwait(ClientPtr client) | |
2250 | { | |
2251 | REQUEST(xSyncAwaitReq); | |
2252 | swaps(&stuff->length); | |
2253 | REQUEST_AT_LEAST_SIZE(xSyncAwaitReq); | |
2254 | SwapRestL(stuff); | |
2255 | ||
2256 | return ProcSyncAwait(client); | |
2257 | } | |
2258 | ||
2259 | static int | |
2260 | SProcSyncCreateAlarm(ClientPtr client) | |
2261 | { | |
2262 | REQUEST(xSyncCreateAlarmReq); | |
2263 | swaps(&stuff->length); | |
2264 | REQUEST_AT_LEAST_SIZE(xSyncCreateAlarmReq); | |
2265 | swapl(&stuff->id); | |
2266 | swapl(&stuff->valueMask); | |
2267 | SwapRestL(stuff); | |
2268 | ||
2269 | return ProcSyncCreateAlarm(client); | |
2270 | } | |
2271 | ||
2272 | static int | |
2273 | SProcSyncChangeAlarm(ClientPtr client) | |
2274 | { | |
2275 | REQUEST(xSyncChangeAlarmReq); | |
2276 | swaps(&stuff->length); | |
2277 | REQUEST_AT_LEAST_SIZE(xSyncChangeAlarmReq); | |
2278 | swapl(&stuff->alarm); | |
2279 | swapl(&stuff->valueMask); | |
2280 | SwapRestL(stuff); | |
2281 | return ProcSyncChangeAlarm(client); | |
2282 | } | |
2283 | ||
2284 | static int | |
2285 | SProcSyncQueryAlarm(ClientPtr client) | |
2286 | { | |
2287 | REQUEST(xSyncQueryAlarmReq); | |
2288 | swaps(&stuff->length); | |
2289 | REQUEST_SIZE_MATCH(xSyncQueryAlarmReq); | |
2290 | swapl(&stuff->alarm); | |
2291 | ||
2292 | return ProcSyncQueryAlarm(client); | |
2293 | } | |
2294 | ||
2295 | static int | |
2296 | SProcSyncDestroyAlarm(ClientPtr client) | |
2297 | { | |
2298 | REQUEST(xSyncDestroyAlarmReq); | |
2299 | swaps(&stuff->length); | |
2300 | REQUEST_SIZE_MATCH(xSyncDestroyAlarmReq); | |
2301 | swapl(&stuff->alarm); | |
2302 | ||
2303 | return ProcSyncDestroyAlarm(client); | |
2304 | } | |
2305 | ||
2306 | static int | |
2307 | SProcSyncSetPriority(ClientPtr client) | |
2308 | { | |
2309 | REQUEST(xSyncSetPriorityReq); | |
2310 | swaps(&stuff->length); | |
2311 | REQUEST_SIZE_MATCH(xSyncSetPriorityReq); | |
2312 | swapl(&stuff->id); | |
2313 | swapl(&stuff->priority); | |
2314 | ||
2315 | return ProcSyncSetPriority(client); | |
2316 | } | |
2317 | ||
2318 | static int | |
2319 | SProcSyncGetPriority(ClientPtr client) | |
2320 | { | |
2321 | REQUEST(xSyncGetPriorityReq); | |
2322 | swaps(&stuff->length); | |
2323 | REQUEST_SIZE_MATCH(xSyncGetPriorityReq); | |
2324 | swapl(&stuff->id); | |
2325 | ||
2326 | return ProcSyncGetPriority(client); | |
2327 | } | |
2328 | ||
2329 | static int | |
2330 | SProcSyncCreateFence(ClientPtr client) | |
2331 | { | |
2332 | REQUEST(xSyncCreateFenceReq); | |
2333 | swaps(&stuff->length); | |
2334 | REQUEST_SIZE_MATCH(xSyncCreateFenceReq); | |
2335 | swapl(&stuff->fid); | |
2336 | ||
2337 | return ProcSyncCreateFence(client); | |
2338 | } | |
2339 | ||
2340 | static int | |
2341 | SProcSyncTriggerFence(ClientPtr client) | |
2342 | { | |
2343 | REQUEST(xSyncTriggerFenceReq); | |
2344 | swaps(&stuff->length); | |
2345 | REQUEST_SIZE_MATCH(xSyncTriggerFenceReq); | |
2346 | swapl(&stuff->fid); | |
2347 | ||
2348 | return ProcSyncTriggerFence(client); | |
2349 | } | |
2350 | ||
2351 | static int | |
2352 | SProcSyncResetFence(ClientPtr client) | |
2353 | { | |
2354 | REQUEST(xSyncResetFenceReq); | |
2355 | swaps(&stuff->length); | |
2356 | REQUEST_SIZE_MATCH(xSyncResetFenceReq); | |
2357 | swapl(&stuff->fid); | |
2358 | ||
2359 | return ProcSyncResetFence(client); | |
2360 | } | |
2361 | ||
2362 | static int | |
2363 | SProcSyncDestroyFence(ClientPtr client) | |
2364 | { | |
2365 | REQUEST(xSyncDestroyFenceReq); | |
2366 | swaps(&stuff->length); | |
2367 | REQUEST_SIZE_MATCH(xSyncDestroyFenceReq); | |
2368 | swapl(&stuff->fid); | |
2369 | ||
2370 | return ProcSyncDestroyFence(client); | |
2371 | } | |
2372 | ||
2373 | static int | |
2374 | SProcSyncQueryFence(ClientPtr client) | |
2375 | { | |
2376 | REQUEST(xSyncQueryFenceReq); | |
2377 | swaps(&stuff->length); | |
2378 | REQUEST_SIZE_MATCH(xSyncQueryFenceReq); | |
2379 | swapl(&stuff->fid); | |
2380 | ||
2381 | return ProcSyncQueryFence(client); | |
2382 | } | |
2383 | ||
2384 | static int | |
2385 | SProcSyncAwaitFence(ClientPtr client) | |
2386 | { | |
2387 | REQUEST(xSyncAwaitFenceReq); | |
2388 | swaps(&stuff->length); | |
2389 | REQUEST_AT_LEAST_SIZE(xSyncAwaitFenceReq); | |
2390 | SwapRestL(stuff); | |
2391 | ||
2392 | return ProcSyncAwaitFence(client); | |
2393 | } | |
2394 | ||
2395 | static int | |
2396 | SProcSyncDispatch(ClientPtr client) | |
2397 | { | |
2398 | REQUEST(xReq); | |
2399 | ||
2400 | switch (stuff->data) { | |
2401 | case X_SyncInitialize: | |
2402 | return SProcSyncInitialize(client); | |
2403 | case X_SyncListSystemCounters: | |
2404 | return SProcSyncListSystemCounters(client); | |
2405 | case X_SyncCreateCounter: | |
2406 | return SProcSyncCreateCounter(client); | |
2407 | case X_SyncSetCounter: | |
2408 | return SProcSyncSetCounter(client); | |
2409 | case X_SyncChangeCounter: | |
2410 | return SProcSyncChangeCounter(client); | |
2411 | case X_SyncQueryCounter: | |
2412 | return SProcSyncQueryCounter(client); | |
2413 | case X_SyncDestroyCounter: | |
2414 | return SProcSyncDestroyCounter(client); | |
2415 | case X_SyncAwait: | |
2416 | return SProcSyncAwait(client); | |
2417 | case X_SyncCreateAlarm: | |
2418 | return SProcSyncCreateAlarm(client); | |
2419 | case X_SyncChangeAlarm: | |
2420 | return SProcSyncChangeAlarm(client); | |
2421 | case X_SyncQueryAlarm: | |
2422 | return SProcSyncQueryAlarm(client); | |
2423 | case X_SyncDestroyAlarm: | |
2424 | return SProcSyncDestroyAlarm(client); | |
2425 | case X_SyncSetPriority: | |
2426 | return SProcSyncSetPriority(client); | |
2427 | case X_SyncGetPriority: | |
2428 | return SProcSyncGetPriority(client); | |
2429 | case X_SyncCreateFence: | |
2430 | return SProcSyncCreateFence(client); | |
2431 | case X_SyncTriggerFence: | |
2432 | return SProcSyncTriggerFence(client); | |
2433 | case X_SyncResetFence: | |
2434 | return SProcSyncResetFence(client); | |
2435 | case X_SyncDestroyFence: | |
2436 | return SProcSyncDestroyFence(client); | |
2437 | case X_SyncQueryFence: | |
2438 | return SProcSyncQueryFence(client); | |
2439 | case X_SyncAwaitFence: | |
2440 | return SProcSyncAwaitFence(client); | |
2441 | default: | |
2442 | return BadRequest; | |
2443 | } | |
2444 | } | |
2445 | ||
2446 | /* | |
2447 | * Event Swapping | |
2448 | */ | |
2449 | ||
2450 | static void | |
2451 | SCounterNotifyEvent(xSyncCounterNotifyEvent * from, | |
2452 | xSyncCounterNotifyEvent * to) | |
2453 | { | |
2454 | to->type = from->type; | |
2455 | to->kind = from->kind; | |
2456 | cpswaps(from->sequenceNumber, to->sequenceNumber); | |
2457 | cpswapl(from->counter, to->counter); | |
2458 | cpswapl(from->wait_value_lo, to->wait_value_lo); | |
2459 | cpswapl(from->wait_value_hi, to->wait_value_hi); | |
2460 | cpswapl(from->counter_value_lo, to->counter_value_lo); | |
2461 | cpswapl(from->counter_value_hi, to->counter_value_hi); | |
2462 | cpswapl(from->time, to->time); | |
2463 | cpswaps(from->count, to->count); | |
2464 | to->destroyed = from->destroyed; | |
2465 | } | |
2466 | ||
2467 | static void | |
2468 | SAlarmNotifyEvent(xSyncAlarmNotifyEvent * from, xSyncAlarmNotifyEvent * to) | |
2469 | { | |
2470 | to->type = from->type; | |
2471 | to->kind = from->kind; | |
2472 | cpswaps(from->sequenceNumber, to->sequenceNumber); | |
2473 | cpswapl(from->alarm, to->alarm); | |
2474 | cpswapl(from->counter_value_lo, to->counter_value_lo); | |
2475 | cpswapl(from->counter_value_hi, to->counter_value_hi); | |
2476 | cpswapl(from->alarm_value_lo, to->alarm_value_lo); | |
2477 | cpswapl(from->alarm_value_hi, to->alarm_value_hi); | |
2478 | cpswapl(from->time, to->time); | |
2479 | to->state = from->state; | |
2480 | } | |
2481 | ||
2482 | /* | |
2483 | * ** Close everything down. ** This is fairly simple for now. | |
2484 | */ | |
2485 | /* ARGSUSED */ | |
2486 | static void | |
2487 | SyncResetProc(ExtensionEntry * extEntry) | |
2488 | { | |
2489 | RTCounter = 0; | |
2490 | } | |
2491 | ||
2492 | /* | |
2493 | * ** Initialise the extension. | |
2494 | */ | |
2495 | void | |
2496 | SyncExtensionInit(void) | |
2497 | { | |
2498 | ExtensionEntry *extEntry; | |
2499 | int s; | |
2500 | ||
2501 | for (s = 0; s < screenInfo.numScreens; s++) | |
2502 | miSyncSetup(screenInfo.screens[s]); | |
2503 | ||
2504 | if (RTCounter == 0) { | |
2505 | RTCounter = CreateNewResourceType(FreeCounter, "SyncCounter"); | |
2506 | xorg_list_init(&SysCounterList); | |
2507 | } | |
2508 | RTAlarm = CreateNewResourceType(FreeAlarm, "SyncAlarm"); | |
2509 | RTAwait = CreateNewResourceType(FreeAwait, "SyncAwait"); | |
2510 | RTFence = CreateNewResourceType(FreeFence, "SyncFence"); | |
2511 | if (RTAwait) | |
2512 | RTAwait |= RC_NEVERRETAIN; | |
2513 | RTAlarmClient = CreateNewResourceType(FreeAlarmClient, "SyncAlarmClient"); | |
2514 | if (RTAlarmClient) | |
2515 | RTAlarmClient |= RC_NEVERRETAIN; | |
2516 | ||
2517 | if (RTCounter == 0 || RTAwait == 0 || RTAlarm == 0 || | |
2518 | RTAlarmClient == 0 || | |
2519 | (extEntry = AddExtension(SYNC_NAME, | |
2520 | XSyncNumberEvents, XSyncNumberErrors, | |
2521 | ProcSyncDispatch, SProcSyncDispatch, | |
2522 | SyncResetProc, StandardMinorOpcode)) == NULL) { | |
2523 | ErrorF("Sync Extension %d.%d failed to Initialise\n", | |
2524 | SYNC_MAJOR_VERSION, SYNC_MINOR_VERSION); | |
2525 | return; | |
2526 | } | |
2527 | ||
2528 | SyncEventBase = extEntry->eventBase; | |
2529 | SyncErrorBase = extEntry->errorBase; | |
2530 | EventSwapVector[SyncEventBase + XSyncCounterNotify] = | |
2531 | (EventSwapPtr) SCounterNotifyEvent; | |
2532 | EventSwapVector[SyncEventBase + XSyncAlarmNotify] = | |
2533 | (EventSwapPtr) SAlarmNotifyEvent; | |
2534 | ||
2535 | SetResourceTypeErrorValue(RTCounter, SyncErrorBase + XSyncBadCounter); | |
2536 | SetResourceTypeErrorValue(RTAlarm, SyncErrorBase + XSyncBadAlarm); | |
2537 | SetResourceTypeErrorValue(RTFence, SyncErrorBase + XSyncBadFence); | |
2538 | ||
2539 | /* | |
2540 | * Although SERVERTIME is implemented by the OS layer, we initialise it | |
2541 | * here because doing it in OsInit() is too early. The resource database | |
2542 | * is not initialised when OsInit() is called. This is just about OK | |
2543 | * because there is always a servertime counter. | |
2544 | */ | |
2545 | SyncInitServerTime(); | |
2546 | SyncInitIdleTime(); | |
2547 | ||
2548 | #ifdef DEBUG | |
2549 | fprintf(stderr, "Sync Extension %d.%d\n", | |
2550 | SYNC_MAJOR_VERSION, SYNC_MINOR_VERSION); | |
2551 | #endif | |
2552 | } | |
2553 | ||
2554 | /* | |
2555 | * ***** SERVERTIME implementation - should go in its own file in OS directory? | |
2556 | */ | |
2557 | ||
2558 | static pointer ServertimeCounter; | |
2559 | static XSyncValue Now; | |
2560 | static XSyncValue *pnext_time; | |
2561 | ||
2562 | #define GetTime()\ | |
2563 | {\ | |
2564 | unsigned long millis = GetTimeInMillis();\ | |
2565 | unsigned long maxis = XSyncValueHigh32(Now);\ | |
2566 | if (millis < XSyncValueLow32(Now)) maxis++;\ | |
2567 | XSyncIntsToValue(&Now, millis, maxis);\ | |
2568 | } | |
2569 | ||
2570 | /* | |
2571 | *** Server Block Handler | |
2572 | *** code inspired by multibuffer extension (now deprecated) | |
2573 | */ | |
2574 | /*ARGSUSED*/ static void | |
2575 | ServertimeBlockHandler(void *env, struct timeval **wt, void *LastSelectMask) | |
2576 | { | |
2577 | XSyncValue delay; | |
2578 | unsigned long timeout; | |
2579 | ||
2580 | if (pnext_time) { | |
2581 | GetTime(); | |
2582 | ||
2583 | if (XSyncValueGreaterOrEqual(Now, *pnext_time)) { | |
2584 | timeout = 0; | |
2585 | } | |
2586 | else { | |
2587 | Bool overflow; | |
2588 | ||
2589 | XSyncValueSubtract(&delay, *pnext_time, Now, &overflow); | |
2590 | (void) overflow; | |
2591 | timeout = XSyncValueLow32(delay); | |
2592 | } | |
2593 | AdjustWaitForDelay(wt, timeout); /* os/utils.c */ | |
2594 | } | |
2595 | } | |
2596 | ||
2597 | /* | |
2598 | *** Wakeup Handler | |
2599 | */ | |
2600 | /*ARGSUSED*/ static void | |
2601 | ServertimeWakeupHandler(void *env, int rc, void *LastSelectMask) | |
2602 | { | |
2603 | if (pnext_time) { | |
2604 | GetTime(); | |
2605 | ||
2606 | if (XSyncValueGreaterOrEqual(Now, *pnext_time)) { | |
2607 | SyncChangeCounter(ServertimeCounter, Now); | |
2608 | } | |
2609 | } | |
2610 | } | |
2611 | ||
2612 | static void | |
2613 | ServertimeQueryValue(void *pCounter, CARD64 * pValue_return) | |
2614 | { | |
2615 | GetTime(); | |
2616 | *pValue_return = Now; | |
2617 | } | |
2618 | ||
2619 | static void | |
2620 | ServertimeBracketValues(void *pCounter, CARD64 * pbracket_less, | |
2621 | CARD64 * pbracket_greater) | |
2622 | { | |
2623 | if (!pnext_time && pbracket_greater) { | |
2624 | RegisterBlockAndWakeupHandlers(ServertimeBlockHandler, | |
2625 | ServertimeWakeupHandler, NULL); | |
2626 | } | |
2627 | else if (pnext_time && !pbracket_greater) { | |
2628 | RemoveBlockAndWakeupHandlers(ServertimeBlockHandler, | |
2629 | ServertimeWakeupHandler, NULL); | |
2630 | } | |
2631 | pnext_time = pbracket_greater; | |
2632 | } | |
2633 | ||
2634 | static void | |
2635 | SyncInitServerTime(void) | |
2636 | { | |
2637 | CARD64 resolution; | |
2638 | ||
2639 | XSyncIntsToValue(&Now, GetTimeInMillis(), 0); | |
2640 | XSyncIntToValue(&resolution, 4); | |
2641 | ServertimeCounter = SyncCreateSystemCounter("SERVERTIME", Now, resolution, | |
2642 | XSyncCounterNeverDecreases, | |
2643 | ServertimeQueryValue, | |
2644 | ServertimeBracketValues); | |
2645 | pnext_time = NULL; | |
2646 | } | |
2647 | ||
2648 | /* | |
2649 | * IDLETIME implementation | |
2650 | */ | |
2651 | ||
2652 | typedef struct { | |
2653 | XSyncValue *value_less; | |
2654 | XSyncValue *value_greater; | |
2655 | int deviceid; | |
2656 | } IdleCounterPriv; | |
2657 | ||
2658 | static void | |
2659 | IdleTimeQueryValue(pointer pCounter, CARD64 * pValue_return) | |
2660 | { | |
2661 | int deviceid; | |
2662 | CARD32 idle; | |
2663 | ||
2664 | if (pCounter) { | |
2665 | SyncCounter *counter = pCounter; | |
2666 | IdleCounterPriv *priv = SysCounterGetPrivate(counter); | |
2667 | deviceid = priv->deviceid; | |
2668 | } | |
2669 | else | |
2670 | deviceid = XIAllDevices; | |
2671 | idle = GetTimeInMillis() - LastEventTime(deviceid).milliseconds; | |
2672 | XSyncIntsToValue(pValue_return, idle, 0); | |
2673 | } | |
2674 | ||
2675 | static void | |
2676 | IdleTimeBlockHandler(pointer pCounter, struct timeval **wt, pointer LastSelectMask) | |
2677 | { | |
2678 | SyncCounter *counter = pCounter; | |
2679 | IdleCounterPriv *priv = SysCounterGetPrivate(counter); | |
2680 | XSyncValue *less = priv->value_less, | |
2681 | *greater = priv->value_greater; | |
2682 | XSyncValue idle, old_idle; | |
2683 | SyncTriggerList *list = counter->sync.pTriglist; | |
2684 | SyncTrigger *trig; | |
2685 | ||
2686 | if (!less && !greater) | |
2687 | return; | |
2688 | ||
2689 | old_idle = counter->value; | |
2690 | IdleTimeQueryValue(counter, &idle); | |
2691 | counter->value = idle; /* push, so CheckTrigger works */ | |
2692 | ||
2693 | /** | |
2694 | * There's an indefinite amount of time between ProcessInputEvents() | |
2695 | * where the idle time is reset and the time we actually get here. idle | |
2696 | * may be past the lower bracket if we dawdled with the events, so | |
2697 | * check for whether we did reset and bomb out of select immediately. | |
2698 | */ | |
2699 | if (less && XSyncValueGreaterThan(idle, *less) && | |
2700 | LastEventTimeWasReset(priv->deviceid)) { | |
2701 | AdjustWaitForDelay(wt, 0); | |
2702 | } else if (less && XSyncValueLessOrEqual(idle, *less)) { | |
2703 | /* | |
2704 | * We've been idle for less than the threshold value, and someone | |
2705 | * wants to know about that, but now we need to know whether they | |
2706 | * want level or edge trigger. Check the trigger list against the | |
2707 | * current idle time, and if any succeed, bomb out of select() | |
2708 | * immediately so we can reschedule. | |
2709 | */ | |
2710 | ||
2711 | for (list = counter->sync.pTriglist; list; list = list->next) { | |
2712 | trig = list->pTrigger; | |
2713 | if (trig->CheckTrigger(trig, old_idle)) { | |
2714 | AdjustWaitForDelay(wt, 0); | |
2715 | break; | |
2716 | } | |
2717 | } | |
2718 | /* | |
2719 | * We've been called exactly on the idle time, but we have a | |
2720 | * NegativeTransition trigger which requires a transition from an | |
2721 | * idle time greater than this. Schedule a wakeup for the next | |
2722 | * millisecond so we won't miss a transition. | |
2723 | */ | |
2724 | if (XSyncValueEqual(idle, *less)) | |
2725 | AdjustWaitForDelay(wt, 1); | |
2726 | } | |
2727 | else if (greater) { | |
2728 | /* | |
2729 | * There's a threshold in the positive direction. If we've been | |
2730 | * idle less than it, schedule a wakeup for sometime in the future. | |
2731 | * If we've been idle more than it, and someone wants to know about | |
2732 | * that level-triggered, schedule an immediate wakeup. | |
2733 | */ | |
2734 | ||
2735 | if (XSyncValueLessThan(idle, *greater)) { | |
2736 | XSyncValue value; | |
2737 | Bool overflow; | |
2738 | ||
2739 | XSyncValueSubtract(&value, *greater, idle, &overflow); | |
2740 | AdjustWaitForDelay(wt, XSyncValueLow32(value)); | |
2741 | } | |
2742 | else { | |
2743 | for (list = counter->sync.pTriglist; list; | |
2744 | list = list->next) { | |
2745 | trig = list->pTrigger; | |
2746 | if (trig->CheckTrigger(trig, old_idle)) { | |
2747 | AdjustWaitForDelay(wt, 0); | |
2748 | break; | |
2749 | } | |
2750 | } | |
2751 | } | |
2752 | } | |
2753 | ||
2754 | counter->value = old_idle; /* pop */ | |
2755 | } | |
2756 | ||
2757 | static void | |
2758 | IdleTimeCheckBrackets(SyncCounter *counter, XSyncValue idle, XSyncValue *less, XSyncValue *greater) | |
2759 | { | |
2760 | if ((greater && XSyncValueGreaterOrEqual(idle, *greater)) || | |
2761 | (less && XSyncValueLessOrEqual(idle, *less))) { | |
2762 | SyncChangeCounter(counter, idle); | |
2763 | } | |
2764 | else | |
2765 | SyncUpdateCounter(counter, idle); | |
2766 | } | |
2767 | ||
2768 | static void | |
2769 | IdleTimeWakeupHandler(pointer pCounter, int rc, pointer LastSelectMask) | |
2770 | { | |
2771 | SyncCounter *counter = pCounter; | |
2772 | IdleCounterPriv *priv = SysCounterGetPrivate(counter); | |
2773 | XSyncValue *less = priv->value_less, | |
2774 | *greater = priv->value_greater; | |
2775 | XSyncValue idle; | |
2776 | ||
2777 | if (!less && !greater) | |
2778 | return; | |
2779 | ||
2780 | IdleTimeQueryValue(pCounter, &idle); | |
2781 | ||
2782 | /* | |
2783 | There is no guarantee for the WakeupHandler to be called within a specific | |
2784 | timeframe. Idletime may go to 0, but by the time we get here, it may be | |
2785 | non-zero and alarms for a pos. transition on 0 won't get triggered. | |
2786 | https://bugs.freedesktop.org/show_bug.cgi?id=70476 | |
2787 | */ | |
2788 | if (LastEventTimeWasReset(priv->deviceid)) { | |
2789 | LastEventTimeToggleResetFlag(priv->deviceid, FALSE); | |
2790 | if (!XSyncValueIsZero(idle)) { | |
2791 | XSyncValue zero; | |
2792 | XSyncIntsToValue(&zero, 0, 0); | |
2793 | IdleTimeCheckBrackets(counter, zero, less, greater); | |
2794 | less = priv->value_less; | |
2795 | greater = priv->value_greater; | |
2796 | } | |
2797 | } | |
2798 | ||
2799 | IdleTimeCheckBrackets(counter, idle, less, greater); | |
2800 | } | |
2801 | ||
2802 | static void | |
2803 | IdleTimeBracketValues(pointer pCounter, CARD64 * pbracket_less, | |
2804 | CARD64 * pbracket_greater) | |
2805 | { | |
2806 | SyncCounter *counter = pCounter; | |
2807 | IdleCounterPriv *priv = SysCounterGetPrivate(counter); | |
2808 | XSyncValue *less = priv->value_less, | |
2809 | *greater = priv->value_greater; | |
2810 | Bool registered = (less || greater); | |
2811 | ||
2812 | if (registered && !pbracket_less && !pbracket_greater) { | |
2813 | RemoveBlockAndWakeupHandlers(IdleTimeBlockHandler, | |
2814 | IdleTimeWakeupHandler, pCounter); | |
2815 | } | |
2816 | else if (!registered && (pbracket_less || pbracket_greater)) { | |
2817 | /* Reset flag must be zero so we don't force a idle timer reset on | |
2818 | the first wakeup */ | |
2819 | LastEventTimeToggleResetAll(FALSE); | |
2820 | RegisterBlockAndWakeupHandlers(IdleTimeBlockHandler, | |
2821 | IdleTimeWakeupHandler, pCounter); | |
2822 | } | |
2823 | ||
2824 | priv->value_greater = pbracket_greater; | |
2825 | priv->value_less = pbracket_less; | |
2826 | } | |
2827 | ||
2828 | static SyncCounter* | |
2829 | init_system_idle_counter(const char *name, int deviceid) | |
2830 | { | |
2831 | CARD64 resolution; | |
2832 | XSyncValue idle; | |
2833 | SyncCounter *idle_time_counter; | |
2834 | ||
2835 | IdleTimeQueryValue(NULL, &idle); | |
2836 | XSyncIntToValue(&resolution, 4); | |
2837 | ||
2838 | idle_time_counter = SyncCreateSystemCounter(name, idle, resolution, | |
2839 | XSyncCounterUnrestricted, | |
2840 | IdleTimeQueryValue, | |
2841 | IdleTimeBracketValues); | |
2842 | ||
2843 | if (idle_time_counter != NULL) { | |
2844 | IdleCounterPriv *priv = malloc(sizeof(IdleCounterPriv)); | |
2845 | ||
2846 | priv->value_less = priv->value_greater = NULL; | |
2847 | priv->deviceid = deviceid; | |
2848 | ||
2849 | idle_time_counter->pSysCounterInfo->private = priv; | |
2850 | } | |
2851 | ||
2852 | return idle_time_counter; | |
2853 | } | |
2854 | ||
2855 | static void | |
2856 | SyncInitIdleTime(void) | |
2857 | { | |
2858 | init_system_idle_counter("IDLETIME", XIAllDevices); | |
2859 | } | |
2860 | ||
2861 | SyncCounter* | |
2862 | SyncInitDeviceIdleTime(DeviceIntPtr dev) | |
2863 | { | |
2864 | char timer_name[64]; | |
2865 | sprintf(timer_name, "DEVICEIDLETIME %d", dev->id); | |
2866 | ||
2867 | return init_system_idle_counter(timer_name, dev->id); | |
2868 | } | |
2869 | ||
2870 | void SyncRemoveDeviceIdleTime(SyncCounter *counter) | |
2871 | { | |
2872 | /* FreeAllResources() frees all system counters before the devices are | |
2873 | shut down, check if there are any left before freeing the device's | |
2874 | counter */ | |
2875 | if (counter && !xorg_list_is_empty(&SysCounterList)) | |
2876 | xorg_list_del(&counter->pSysCounterInfo->entry); | |
2877 | } |