File: | mi/mieq.c |
Location: | line 515, column 9 |
Description: | Dereference of null pointer |
1 | /* | |||
2 | * | |||
3 | Copyright 1990, 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 in | |||
12 | all copies or substantial portions of the Software. | |||
13 | ||||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||
15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||
17 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN | |||
18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |||
19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |||
20 | ||||
21 | Except as contained in this notice, the name of The Open Group shall not be | |||
22 | used in advertising or otherwise to promote the sale, use or other dealings | |||
23 | in this Software without prior written authorization from The Open Group. | |||
24 | * | |||
25 | * Author: Keith Packard, MIT X Consortium | |||
26 | */ | |||
27 | ||||
28 | /* | |||
29 | * mieq.c | |||
30 | * | |||
31 | * Machine independent event queue | |||
32 | * | |||
33 | */ | |||
34 | ||||
35 | #if HAVE_DIX_CONFIG_H1 | |||
36 | #include <dix-config.h> | |||
37 | #endif | |||
38 | ||||
39 | #include <X11/X.h> | |||
40 | #include <X11/Xmd.h> | |||
41 | #include <X11/Xproto.h> | |||
42 | #include "misc.h" | |||
43 | #include "windowstr.h" | |||
44 | #include "pixmapstr.h" | |||
45 | #include "inputstr.h" | |||
46 | #include "inpututils.h" | |||
47 | #include "mi.h" | |||
48 | #include "mipointer.h" | |||
49 | #include "scrnintstr.h" | |||
50 | #include <X11/extensions/XI.h> | |||
51 | #include <X11/extensions/XIproto.h> | |||
52 | #include <X11/extensions/geproto.h> | |||
53 | #include "extinit.h" | |||
54 | #include "exglobals.h" | |||
55 | #include "eventstr.h" | |||
56 | ||||
57 | #ifdef DPMSExtension | |||
58 | #include "dpmsproc.h" | |||
59 | #include <X11/extensions/dpmsconst.h> | |||
60 | #endif | |||
61 | ||||
62 | /* Maximum size should be initial size multiplied by a power of 2 */ | |||
63 | #define QUEUE_INITIAL_SIZE512 512 | |||
64 | #define QUEUE_RESERVED_SIZE64 64 | |||
65 | #define QUEUE_MAXIMUM_SIZE4096 4096 | |||
66 | #define QUEUE_DROP_BACKTRACE_FREQUENCY100 100 | |||
67 | #define QUEUE_DROP_BACKTRACE_MAX10 10 | |||
68 | ||||
69 | #define EnqueueScreen(dev)dev->spriteInfo->sprite->pEnqueueScreen dev->spriteInfo->sprite->pEnqueueScreen | |||
70 | #define DequeueScreen(dev)dev->spriteInfo->sprite->pDequeueScreen dev->spriteInfo->sprite->pDequeueScreen | |||
71 | ||||
72 | typedef struct _Event { | |||
73 | InternalEvent *events; | |||
74 | ScreenPtr pScreen; | |||
75 | DeviceIntPtr pDev; /* device this event _originated_ from */ | |||
76 | } EventRec, *EventPtr; | |||
77 | ||||
78 | typedef struct _EventQueue { | |||
79 | HWEventQueueType head, tail; /* long for SetInputCheck */ | |||
80 | CARD32 lastEventTime; /* to avoid time running backwards */ | |||
81 | int lastMotion; /* device ID if last event motion? */ | |||
82 | EventRec *events; /* our queue as an array */ | |||
83 | size_t nevents; /* the number of buckets in our queue */ | |||
84 | size_t dropped; /* counter for number of consecutive dropped events */ | |||
85 | mieqHandler handlers[128]; /* custom event handler */ | |||
86 | } EventQueueRec, *EventQueuePtr; | |||
87 | ||||
88 | static EventQueueRec miEventQueue; | |||
89 | ||||
90 | #ifdef XQUARTZ1 | |||
91 | extern BOOL serverRunning; | |||
92 | extern pthread_mutex_t serverRunningMutex; | |||
93 | extern pthread_cond_t serverRunningCond; | |||
94 | ||||
95 | static inline void | |||
96 | wait_for_server_init(void) | |||
97 | { | |||
98 | /* If the server hasn't finished initializing, wait for it... */ | |||
99 | if (!serverRunning) { | |||
100 | pthread_mutex_lock(&serverRunningMutex); | |||
101 | while (!serverRunning) | |||
102 | pthread_cond_wait(&serverRunningCond, &serverRunningMutex); | |||
103 | pthread_mutex_unlock(&serverRunningMutex); | |||
104 | } | |||
105 | } | |||
106 | #endif | |||
107 | ||||
108 | static size_t | |||
109 | mieqNumEnqueued(EventQueuePtr eventQueue) | |||
110 | { | |||
111 | size_t n_enqueued = 0; | |||
112 | ||||
113 | if (eventQueue->nevents) { | |||
114 | /* % is not well-defined with negative numbers... sigh */ | |||
115 | n_enqueued = eventQueue->tail - eventQueue->head + eventQueue->nevents; | |||
116 | if (n_enqueued >= eventQueue->nevents) | |||
117 | n_enqueued -= eventQueue->nevents; | |||
118 | } | |||
119 | return n_enqueued; | |||
120 | } | |||
121 | ||||
122 | /* Pre-condition: Called with input_lock held */ | |||
123 | static Bool | |||
124 | mieqGrowQueue(EventQueuePtr eventQueue, size_t new_nevents) | |||
125 | { | |||
126 | size_t i, n_enqueued, first_hunk; | |||
127 | EventRec *new_events; | |||
128 | ||||
129 | if (!eventQueue) { | |||
130 | ErrorF("[mi] mieqGrowQueue called with a NULL eventQueue\n"); | |||
131 | return FALSE0; | |||
132 | } | |||
133 | ||||
134 | if (new_nevents <= eventQueue->nevents) | |||
135 | return FALSE0; | |||
136 | ||||
137 | new_events = calloc(new_nevents, sizeof(EventRec)); | |||
138 | if (new_events == NULL((void*)0)) { | |||
139 | ErrorF("[mi] mieqGrowQueue memory allocation error.\n"); | |||
140 | return FALSE0; | |||
141 | } | |||
142 | ||||
143 | n_enqueued = mieqNumEnqueued(eventQueue); | |||
144 | ||||
145 | /* First copy the existing events */ | |||
146 | first_hunk = eventQueue->nevents - eventQueue->head; | |||
147 | memcpy(new_events,__builtin___memcpy_chk (new_events, &eventQueue->events [eventQueue->head], first_hunk * sizeof(EventRec), __builtin_object_size (new_events, 0)) | |||
148 | &eventQueue->events[eventQueue->head],__builtin___memcpy_chk (new_events, &eventQueue->events [eventQueue->head], first_hunk * sizeof(EventRec), __builtin_object_size (new_events, 0)) | |||
149 | first_hunk * sizeof(EventRec))__builtin___memcpy_chk (new_events, &eventQueue->events [eventQueue->head], first_hunk * sizeof(EventRec), __builtin_object_size (new_events, 0)); | |||
150 | memcpy(&new_events[first_hunk],__builtin___memcpy_chk (&new_events[first_hunk], eventQueue ->events, eventQueue->head * sizeof(EventRec), __builtin_object_size (&new_events[first_hunk], 0)) | |||
151 | eventQueue->events, eventQueue->head * sizeof(EventRec))__builtin___memcpy_chk (&new_events[first_hunk], eventQueue ->events, eventQueue->head * sizeof(EventRec), __builtin_object_size (&new_events[first_hunk], 0)); | |||
152 | ||||
153 | /* Initialize the new portion */ | |||
154 | for (i = eventQueue->nevents; i < new_nevents; i++) { | |||
155 | InternalEvent *evlist = InitEventList(1); | |||
156 | ||||
157 | if (!evlist) { | |||
158 | size_t j; | |||
159 | ||||
160 | for (j = 0; j < i; j++) | |||
161 | FreeEventList(new_events[j].events, 1); | |||
162 | free(new_events); | |||
163 | OsReleaseSignals(); | |||
164 | return FALSE0; | |||
165 | } | |||
166 | new_events[i].events = evlist; | |||
167 | } | |||
168 | ||||
169 | /* And update our record */ | |||
170 | eventQueue->tail = n_enqueued; | |||
171 | eventQueue->head = 0; | |||
172 | eventQueue->nevents = new_nevents; | |||
173 | free(eventQueue->events); | |||
174 | eventQueue->events = new_events; | |||
175 | ||||
176 | return TRUE1; | |||
177 | } | |||
178 | ||||
179 | Bool | |||
180 | mieqInit(void) | |||
181 | { | |||
182 | memset(&miEventQueue, 0, sizeof(miEventQueue))__builtin___memset_chk (&miEventQueue, 0, sizeof(miEventQueue ), __builtin_object_size (&miEventQueue, 0)); | |||
183 | miEventQueue.lastEventTime = GetTimeInMillis(); | |||
184 | ||||
185 | input_lock(); | |||
186 | if (!mieqGrowQueue(&miEventQueue, QUEUE_INITIAL_SIZE512)) | |||
187 | FatalError("Could not allocate event queue.\n"); | |||
188 | input_unlock(); | |||
189 | ||||
190 | SetInputCheck(&miEventQueue.head, &miEventQueue.tail); | |||
191 | return TRUE1; | |||
192 | } | |||
193 | ||||
194 | void | |||
195 | mieqFini(void) | |||
196 | { | |||
197 | int i; | |||
198 | ||||
199 | for (i = 0; i < miEventQueue.nevents; i++) { | |||
200 | if (miEventQueue.events[i].events != NULL((void*)0)) { | |||
201 | FreeEventList(miEventQueue.events[i].events, 1); | |||
202 | miEventQueue.events[i].events = NULL((void*)0); | |||
203 | } | |||
204 | } | |||
205 | free(miEventQueue.events); | |||
206 | } | |||
207 | ||||
208 | /* | |||
209 | * Must be reentrant with ProcessInputEvents. Assumption: mieqEnqueue | |||
210 | * will never be interrupted. Must be called with input_lock held | |||
211 | */ | |||
212 | ||||
213 | void | |||
214 | mieqEnqueue(DeviceIntPtr pDev, InternalEvent *e) | |||
215 | { | |||
216 | unsigned int oldtail = miEventQueue.tail; | |||
217 | InternalEvent *evt; | |||
218 | int isMotion = 0; | |||
219 | int evlen; | |||
220 | Time time; | |||
221 | size_t n_enqueued; | |||
222 | ||||
223 | #ifdef XQUARTZ1 | |||
224 | wait_for_server_init(); | |||
225 | #endif | |||
226 | ||||
227 | verify_internal_event(e); | |||
228 | ||||
229 | n_enqueued = mieqNumEnqueued(&miEventQueue); | |||
230 | ||||
231 | /* avoid merging events from different devices */ | |||
232 | if (e->any.type == ET_Motion) | |||
233 | isMotion = pDev->id; | |||
234 | ||||
235 | if (isMotion && isMotion == miEventQueue.lastMotion && | |||
236 | oldtail != miEventQueue.head) { | |||
237 | oldtail = (oldtail - 1) % miEventQueue.nevents; | |||
238 | } | |||
239 | else if (n_enqueued + 1 == miEventQueue.nevents) { | |||
240 | if (!mieqGrowQueue(&miEventQueue, miEventQueue.nevents << 1)) { | |||
241 | /* Toss events which come in late. Usually this means your server's | |||
242 | * stuck in an infinite loop somewhere, but SIGIO is still getting | |||
243 | * handled. | |||
244 | */ | |||
245 | miEventQueue.dropped++; | |||
246 | if (miEventQueue.dropped == 1) { | |||
247 | ErrorFSigSafe("[mi] EQ overflowing. Additional events will be " | |||
248 | "discarded until existing events are processed.\n"); | |||
249 | xorg_backtrace(); | |||
250 | ErrorFSigSafe("[mi] These backtraces from mieqEnqueue may point to " | |||
251 | "a culprit higher up the stack.\n"); | |||
252 | ErrorFSigSafe("[mi] mieq is *NOT* the cause. It is a victim.\n"); | |||
253 | } | |||
254 | else if (miEventQueue.dropped % QUEUE_DROP_BACKTRACE_FREQUENCY100 == 0 && | |||
255 | miEventQueue.dropped / QUEUE_DROP_BACKTRACE_FREQUENCY100 <= | |||
256 | QUEUE_DROP_BACKTRACE_MAX10) { | |||
257 | ErrorFSigSafe("[mi] EQ overflow continuing. %zu events have been " | |||
258 | "dropped.\n", miEventQueue.dropped); | |||
259 | if (miEventQueue.dropped / QUEUE_DROP_BACKTRACE_FREQUENCY100 == | |||
260 | QUEUE_DROP_BACKTRACE_MAX10) { | |||
261 | ErrorFSigSafe("[mi] No further overflow reports will be " | |||
262 | "reported until the clog is cleared.\n"); | |||
263 | } | |||
264 | xorg_backtrace(); | |||
265 | } | |||
266 | return; | |||
267 | } | |||
268 | oldtail = miEventQueue.tail; | |||
269 | } | |||
270 | ||||
271 | evlen = e->any.length; | |||
272 | evt = miEventQueue.events[oldtail].events; | |||
273 | memcpy(evt, e, evlen)__builtin___memcpy_chk (evt, e, evlen, __builtin_object_size ( evt, 0)); | |||
274 | ||||
275 | time = e->any.time; | |||
276 | /* Make sure that event times don't go backwards - this | |||
277 | * is "unnecessary", but very useful. */ | |||
278 | if (time < miEventQueue.lastEventTime && | |||
279 | miEventQueue.lastEventTime - time < 10000) | |||
280 | e->any.time = miEventQueue.lastEventTime; | |||
281 | ||||
282 | miEventQueue.lastEventTime = evt->any.time; | |||
283 | miEventQueue.events[oldtail].pScreen = pDev ? EnqueueScreen(pDev)pDev->spriteInfo->sprite->pEnqueueScreen : NULL((void*)0); | |||
284 | miEventQueue.events[oldtail].pDev = pDev; | |||
285 | ||||
286 | miEventQueue.lastMotion = isMotion; | |||
287 | miEventQueue.tail = (oldtail + 1) % miEventQueue.nevents; | |||
288 | } | |||
289 | ||||
290 | /** | |||
291 | * Changes the screen reference events are being enqueued from. | |||
292 | * Input events are enqueued with a screen reference and dequeued and | |||
293 | * processed with a (potentially different) screen reference. | |||
294 | * This function is called whenever a new event has changed screen but is | |||
295 | * still logically on the previous screen as seen by the client. | |||
296 | * This usually happens whenever the visible cursor moves across screen | |||
297 | * boundaries during event generation, before the same event is processed | |||
298 | * and sent down the wire. | |||
299 | * | |||
300 | * @param pDev The device that triggered a screen change. | |||
301 | * @param pScreen The new screen events are being enqueued for. | |||
302 | * @param set_dequeue_screen If TRUE, pScreen is set as both enqueue screen | |||
303 | * and dequeue screen. | |||
304 | */ | |||
305 | void | |||
306 | mieqSwitchScreen(DeviceIntPtr pDev, ScreenPtr pScreen, Bool set_dequeue_screen) | |||
307 | { | |||
308 | EnqueueScreen(pDev)pDev->spriteInfo->sprite->pEnqueueScreen = pScreen; | |||
309 | if (set_dequeue_screen) | |||
310 | DequeueScreen(pDev)pDev->spriteInfo->sprite->pDequeueScreen = pScreen; | |||
311 | } | |||
312 | ||||
313 | void | |||
314 | mieqSetHandler(int event, mieqHandler handler) | |||
315 | { | |||
316 | if (handler && miEventQueue.handlers[event]) | |||
317 | ErrorF("[mi] mieq: warning: overriding existing handler %p with %p for " | |||
318 | "event %d\n", miEventQueue.handlers[event], handler, event); | |||
319 | ||||
320 | miEventQueue.handlers[event] = handler; | |||
321 | } | |||
322 | ||||
323 | /** | |||
324 | * Change the device id of the given event to the given device's id. | |||
325 | */ | |||
326 | static void | |||
327 | ChangeDeviceID(DeviceIntPtr dev, InternalEvent *event) | |||
328 | { | |||
329 | switch (event->any.type) { | |||
330 | case ET_Motion: | |||
331 | case ET_KeyPress: | |||
332 | case ET_KeyRelease: | |||
333 | case ET_ButtonPress: | |||
334 | case ET_ButtonRelease: | |||
335 | case ET_ProximityIn: | |||
336 | case ET_ProximityOut: | |||
337 | case ET_Hierarchy: | |||
338 | case ET_DeviceChanged: | |||
339 | case ET_TouchBegin: | |||
340 | case ET_TouchUpdate: | |||
341 | case ET_TouchEnd: | |||
342 | event->device_event.deviceid = dev->id; | |||
343 | break; | |||
344 | case ET_TouchOwnership: | |||
345 | event->touch_ownership_event.deviceid = dev->id; | |||
346 | break; | |||
347 | #if XFreeXDGA | |||
348 | case ET_DGAEvent: | |||
349 | break; | |||
350 | #endif | |||
351 | case ET_RawKeyPress: | |||
352 | case ET_RawKeyRelease: | |||
353 | case ET_RawButtonPress: | |||
354 | case ET_RawButtonRelease: | |||
355 | case ET_RawMotion: | |||
356 | case ET_RawTouchBegin: | |||
357 | case ET_RawTouchEnd: | |||
358 | case ET_RawTouchUpdate: | |||
359 | event->raw_event.deviceid = dev->id; | |||
360 | break; | |||
361 | case ET_BarrierHit: | |||
362 | case ET_BarrierLeave: | |||
363 | event->barrier_event.deviceid = dev->id; | |||
364 | break; | |||
365 | default: | |||
366 | ErrorF("[mi] Unknown event type (%d), cannot change id.\n", | |||
367 | event->any.type); | |||
368 | } | |||
369 | } | |||
370 | ||||
371 | static void | |||
372 | FixUpEventForMaster(DeviceIntPtr mdev, DeviceIntPtr sdev, | |||
373 | InternalEvent *original, InternalEvent *master) | |||
374 | { | |||
375 | verify_internal_event(original); | |||
376 | verify_internal_event(master); | |||
377 | /* Ensure chained button mappings, i.e. that the detail field is the | |||
378 | * value of the mapped button on the SD, not the physical button */ | |||
379 | if (original->any.type == ET_ButtonPress || | |||
380 | original->any.type == ET_ButtonRelease) { | |||
381 | int btn = original->device_event.detail.button; | |||
382 | ||||
383 | if (!sdev->button) | |||
384 | return; /* Should never happen */ | |||
385 | ||||
386 | master->device_event.detail.button = sdev->button->map[btn]; | |||
387 | } | |||
388 | } | |||
389 | ||||
390 | /** | |||
391 | * Copy the given event into master. | |||
392 | * @param sdev The slave device the original event comes from | |||
393 | * @param original The event as it came from the EQ | |||
394 | * @param copy The event after being copied | |||
395 | * @return The master device or NULL if the device is a floating slave. | |||
396 | */ | |||
397 | DeviceIntPtr | |||
398 | CopyGetMasterEvent(DeviceIntPtr sdev, | |||
399 | InternalEvent *original, InternalEvent *copy) | |||
400 | { | |||
401 | DeviceIntPtr mdev; | |||
402 | int len = original->any.length; | |||
403 | int type = original->any.type; | |||
404 | int mtype; /* which master type? */ | |||
405 | ||||
406 | verify_internal_event(original); | |||
407 | ||||
408 | /* ET_XQuartz has sdev == NULL */ | |||
409 | if (!sdev || IsMaster(sdev) || IsFloating(sdev)) | |||
410 | return NULL((void*)0); | |||
411 | ||||
412 | #if XFreeXDGA | |||
413 | if (type == ET_DGAEvent) | |||
414 | type = original->dga_event.subtype; | |||
415 | #endif | |||
416 | ||||
417 | switch (type) { | |||
418 | case ET_KeyPress: | |||
419 | case ET_KeyRelease: | |||
420 | mtype = MASTER_KEYBOARD2; | |||
421 | break; | |||
422 | case ET_ButtonPress: | |||
423 | case ET_ButtonRelease: | |||
424 | case ET_Motion: | |||
425 | case ET_ProximityIn: | |||
426 | case ET_ProximityOut: | |||
427 | mtype = MASTER_POINTER1; | |||
428 | break; | |||
429 | default: | |||
430 | mtype = MASTER_ATTACHED4; | |||
431 | break; | |||
432 | } | |||
433 | ||||
434 | mdev = GetMaster(sdev, mtype); | |||
435 | memcpy(copy, original, len)__builtin___memcpy_chk (copy, original, len, __builtin_object_size (copy, 0)); | |||
436 | ChangeDeviceID(mdev, copy); | |||
437 | FixUpEventForMaster(mdev, sdev, original, copy); | |||
438 | ||||
439 | return mdev; | |||
440 | } | |||
441 | ||||
442 | static void | |||
443 | mieqMoveToNewScreen(DeviceIntPtr dev, ScreenPtr screen, DeviceEvent *event) | |||
444 | { | |||
445 | if (dev && screen && screen != DequeueScreen(dev)dev->spriteInfo->sprite->pDequeueScreen) { | |||
446 | int x = 0, y = 0; | |||
447 | ||||
448 | DequeueScreen(dev)dev->spriteInfo->sprite->pDequeueScreen = screen; | |||
449 | x = event->root_x; | |||
450 | y = event->root_y; | |||
451 | NewCurrentScreen(dev, DequeueScreen(dev)dev->spriteInfo->sprite->pDequeueScreen, x, y); | |||
452 | } | |||
453 | } | |||
454 | ||||
455 | /** | |||
456 | * Post the given @event through the device hierarchy, as appropriate. | |||
457 | * Use this function if an event must be posted for a given device during the | |||
458 | * usual event processing cycle. | |||
459 | */ | |||
460 | void | |||
461 | mieqProcessDeviceEvent(DeviceIntPtr dev, InternalEvent *event, ScreenPtr screen) | |||
462 | { | |||
463 | mieqHandler handler; | |||
464 | DeviceIntPtr master; | |||
465 | InternalEvent mevent; /* master event */ | |||
466 | ||||
467 | verify_internal_event(event); | |||
468 | ||||
469 | /* refuse events from disabled devices */ | |||
470 | if (dev && !dev->enabled) | |||
471 | return; | |||
472 | ||||
473 | /* Custom event handler */ | |||
474 | handler = miEventQueue.handlers[event->any.type]; | |||
475 | ||||
476 | switch (event->any.type) { | |||
477 | /* Catch events that include valuator information and check if they | |||
478 | * are changing the screen */ | |||
479 | case ET_Motion: | |||
480 | case ET_KeyPress: | |||
481 | case ET_KeyRelease: | |||
482 | case ET_ButtonPress: | |||
483 | case ET_ButtonRelease: | |||
484 | if (!handler) | |||
485 | mieqMoveToNewScreen(dev, screen, &event->device_event); | |||
486 | break; | |||
487 | case ET_TouchBegin: | |||
488 | case ET_TouchUpdate: | |||
489 | case ET_TouchEnd: | |||
490 | if (!handler && (event->device_event.flags & TOUCH_POINTER_EMULATED(1 << 5))) | |||
491 | mieqMoveToNewScreen(dev, screen, &event->device_event); | |||
492 | break; | |||
493 | default: | |||
494 | break; | |||
495 | } | |||
496 | master = CopyGetMasterEvent(dev, event, &mevent); | |||
497 | ||||
498 | if (master) | |||
499 | master->lastSlave = dev; | |||
500 | ||||
501 | /* If someone's registered a custom event handler, let them | |||
502 | * steal it. */ | |||
503 | if (handler) { | |||
504 | int screenNum = dev && | |||
505 | DequeueScreen(dev)dev->spriteInfo->sprite->pDequeueScreen ? DequeueScreen(dev)dev->spriteInfo->sprite->pDequeueScreen->myNum : (screen ? screen-> | |||
506 | myNum : 0); | |||
507 | handler(screenNum, event, dev); | |||
508 | /* Check for the SD's master in case the device got detached | |||
509 | * during event processing */ | |||
510 | if (master && !IsFloating(dev)) | |||
511 | handler(screenNum, &mevent, master); | |||
512 | } | |||
513 | else { | |||
514 | /* process slave first, then master */ | |||
515 | dev->public.processInputProc(event, dev); | |||
| ||||
516 | ||||
517 | /* Check for the SD's master in case the device got detached | |||
518 | * during event processing */ | |||
519 | if (master && !IsFloating(dev)) | |||
520 | master->public.processInputProc(&mevent, master); | |||
521 | } | |||
522 | } | |||
523 | ||||
524 | /* Call this from ProcessInputEvents(). */ | |||
525 | void | |||
526 | mieqProcessInputEvents(void) | |||
527 | { | |||
528 | EventRec *e = NULL((void*)0); | |||
529 | ScreenPtr screen; | |||
530 | InternalEvent event; | |||
531 | DeviceIntPtr dev = NULL((void*)0), master = NULL((void*)0); | |||
532 | static Bool inProcessInputEvents = FALSE0; | |||
533 | ||||
534 | input_lock(); | |||
535 | ||||
536 | /* | |||
537 | * report an error if mieqProcessInputEvents() is called recursively; | |||
538 | * this can happen, e.g., if something in the mieqProcessDeviceEvent() | |||
539 | * call chain calls UpdateCurrentTime() instead of UpdateCurrentTimeIf() | |||
540 | */ | |||
541 | BUG_WARN_MSG(inProcessInputEvents, "[mi] mieqProcessInputEvents() called recursively.\n")do { if (inProcessInputEvents) { ErrorFSigSafe("BUG: triggered 'if (" "inProcessInputEvents" ")'\n"); ErrorFSigSafe("BUG: %s:%u in %s()\n" , "mieq.c", 541, __func__); if (1) ErrorFSigSafe("[mi] mieqProcessInputEvents() called recursively.\n" ); xorg_backtrace(); } } while(0); | |||
542 | inProcessInputEvents = TRUE1; | |||
543 | ||||
544 | if (miEventQueue.dropped) { | |||
| ||||
545 | ErrorF("[mi] EQ processing has resumed after %lu dropped events.\n", | |||
546 | (unsigned long) miEventQueue.dropped); | |||
547 | ErrorF | |||
548 | ("[mi] This may be caused by a misbehaving driver monopolizing the server's resources.\n"); | |||
549 | miEventQueue.dropped = 0; | |||
550 | } | |||
551 | ||||
552 | while (miEventQueue.head != miEventQueue.tail) { | |||
553 | e = &miEventQueue.events[miEventQueue.head]; | |||
554 | ||||
555 | event = *e->events; | |||
556 | dev = e->pDev; | |||
557 | screen = e->pScreen; | |||
558 | ||||
559 | miEventQueue.head = (miEventQueue.head + 1) % miEventQueue.nevents; | |||
560 | ||||
561 | input_unlock(); | |||
562 | ||||
563 | master = (dev) ? GetMaster(dev, MASTER_ATTACHED4) : NULL((void*)0); | |||
564 | ||||
565 | if (screenIsSaved == SCREEN_SAVER_ON0) | |||
566 | dixSaveScreens(serverClient, SCREEN_SAVER_OFF1, ScreenSaverReset0); | |||
567 | #ifdef DPMSExtension | |||
568 | else if (DPMSPowerLevel != DPMSModeOn) | |||
569 | SetScreenSaverTimer(); | |||
570 | ||||
571 | if (DPMSPowerLevel != DPMSModeOn) | |||
572 | DPMSSet(serverClient, DPMSModeOn); | |||
573 | #endif | |||
574 | ||||
575 | mieqProcessDeviceEvent(dev, &event, screen); | |||
576 | ||||
577 | /* Update the sprite now. Next event may be from different device. */ | |||
578 | if (master && | |||
579 | (event.any.type == ET_Motion || | |||
580 | ((event.any.type == ET_TouchBegin || | |||
581 | event.any.type == ET_TouchUpdate) && | |||
582 | event.device_event.flags & TOUCH_POINTER_EMULATED(1 << 5)))) | |||
583 | miPointerUpdateSprite(dev); | |||
584 | ||||
585 | input_lock(); | |||
586 | } | |||
587 | ||||
588 | inProcessInputEvents = FALSE0; | |||
589 | ||||
590 | input_unlock(); | |||
591 | } |