| 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 | } |