1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
7 |
|
8 |
|
9 |
|
10 | 'use strict';
|
11 |
|
12 | (function (global, factory) {
|
13 | typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
|
14 | typeof define === 'function' && define.amd ? define(['exports'], factory) :
|
15 | (factory((global.SchedulerMock = {})));
|
16 | }(this, (function (exports) { 'use strict';
|
17 |
|
18 | var enableSchedulerDebugging = false;
|
19 |
|
20 | var enableProfiling = true;
|
21 |
|
22 | var currentTime = 0;
|
23 | var scheduledCallback = null;
|
24 | var scheduledTimeout = null;
|
25 | var timeoutTime = -1;
|
26 | var yieldedValues = null;
|
27 | var expectedNumberOfYields = -1;
|
28 | var didStop = false;
|
29 | var isFlushing = false;
|
30 | var needsPaint = false;
|
31 | var shouldYieldForPaint = false;
|
32 | function requestHostCallback(callback) {
|
33 | scheduledCallback = callback;
|
34 | }
|
35 |
|
36 | function requestHostTimeout(callback, ms) {
|
37 | scheduledTimeout = callback;
|
38 | timeoutTime = currentTime + ms;
|
39 | }
|
40 | function cancelHostTimeout() {
|
41 | scheduledTimeout = null;
|
42 | timeoutTime = -1;
|
43 | }
|
44 | function shouldYieldToHost() {
|
45 | if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
|
46 |
|
47 | didStop = true;
|
48 | return true;
|
49 | }
|
50 |
|
51 | return false;
|
52 | }
|
53 | function getCurrentTime() {
|
54 | return currentTime;
|
55 | }
|
56 | function forceFrameRate() {
|
57 | }
|
58 |
|
59 |
|
60 | function unstable_flushNumberOfYields(count) {
|
61 | if (isFlushing) {
|
62 | throw new Error('Already flushing work.');
|
63 | }
|
64 |
|
65 | if (scheduledCallback !== null) {
|
66 | var cb = scheduledCallback;
|
67 | expectedNumberOfYields = count;
|
68 | isFlushing = true;
|
69 |
|
70 | try {
|
71 | var hasMoreWork = true;
|
72 |
|
73 | do {
|
74 | hasMoreWork = cb(true, currentTime);
|
75 | } while (hasMoreWork && !didStop);
|
76 |
|
77 | if (!hasMoreWork) {
|
78 | scheduledCallback = null;
|
79 | }
|
80 | } finally {
|
81 | expectedNumberOfYields = -1;
|
82 | didStop = false;
|
83 | isFlushing = false;
|
84 | }
|
85 | }
|
86 | }
|
87 | function unstable_flushUntilNextPaint() {
|
88 | if (isFlushing) {
|
89 | throw new Error('Already flushing work.');
|
90 | }
|
91 |
|
92 | if (scheduledCallback !== null) {
|
93 | var cb = scheduledCallback;
|
94 | shouldYieldForPaint = true;
|
95 | needsPaint = false;
|
96 | isFlushing = true;
|
97 |
|
98 | try {
|
99 | var hasMoreWork = true;
|
100 |
|
101 | do {
|
102 | hasMoreWork = cb(true, currentTime);
|
103 | } while (hasMoreWork && !didStop);
|
104 |
|
105 | if (!hasMoreWork) {
|
106 | scheduledCallback = null;
|
107 | }
|
108 | } finally {
|
109 | shouldYieldForPaint = false;
|
110 | didStop = false;
|
111 | isFlushing = false;
|
112 | }
|
113 | }
|
114 | }
|
115 | function unstable_flushExpired() {
|
116 | if (isFlushing) {
|
117 | throw new Error('Already flushing work.');
|
118 | }
|
119 |
|
120 | if (scheduledCallback !== null) {
|
121 | isFlushing = true;
|
122 |
|
123 | try {
|
124 | var hasMoreWork = scheduledCallback(false, currentTime);
|
125 |
|
126 | if (!hasMoreWork) {
|
127 | scheduledCallback = null;
|
128 | }
|
129 | } finally {
|
130 | isFlushing = false;
|
131 | }
|
132 | }
|
133 | }
|
134 | function unstable_flushAllWithoutAsserting() {
|
135 |
|
136 | if (isFlushing) {
|
137 | throw new Error('Already flushing work.');
|
138 | }
|
139 |
|
140 | if (scheduledCallback !== null) {
|
141 | var cb = scheduledCallback;
|
142 | isFlushing = true;
|
143 |
|
144 | try {
|
145 | var hasMoreWork = true;
|
146 |
|
147 | do {
|
148 | hasMoreWork = cb(true, currentTime);
|
149 | } while (hasMoreWork);
|
150 |
|
151 | if (!hasMoreWork) {
|
152 | scheduledCallback = null;
|
153 | }
|
154 |
|
155 | return true;
|
156 | } finally {
|
157 | isFlushing = false;
|
158 | }
|
159 | } else {
|
160 | return false;
|
161 | }
|
162 | }
|
163 | function unstable_clearYields() {
|
164 | if (yieldedValues === null) {
|
165 | return [];
|
166 | }
|
167 |
|
168 | var values = yieldedValues;
|
169 | yieldedValues = null;
|
170 | return values;
|
171 | }
|
172 | function unstable_flushAll() {
|
173 | if (yieldedValues !== null) {
|
174 | throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
|
175 | }
|
176 |
|
177 | unstable_flushAllWithoutAsserting();
|
178 |
|
179 | if (yieldedValues !== null) {
|
180 | throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
|
181 | }
|
182 | }
|
183 | function unstable_yieldValue(value) {
|
184 | if (yieldedValues === null) {
|
185 | yieldedValues = [value];
|
186 | } else {
|
187 | yieldedValues.push(value);
|
188 | }
|
189 | }
|
190 | function unstable_advanceTime(ms) {
|
191 | currentTime += ms;
|
192 |
|
193 | if (!isFlushing) {
|
194 | if (scheduledTimeout !== null && timeoutTime <= currentTime) {
|
195 | scheduledTimeout(currentTime);
|
196 | timeoutTime = -1;
|
197 | scheduledTimeout = null;
|
198 | }
|
199 |
|
200 | unstable_flushExpired();
|
201 | }
|
202 | }
|
203 | function requestPaint() {
|
204 | needsPaint = true;
|
205 | }
|
206 |
|
207 | function push(heap, node) {
|
208 | var index = heap.length;
|
209 | heap.push(node);
|
210 | siftUp(heap, node, index);
|
211 | }
|
212 | function peek(heap) {
|
213 | var first = heap[0];
|
214 | return first === undefined ? null : first;
|
215 | }
|
216 | function pop(heap) {
|
217 | var first = heap[0];
|
218 |
|
219 | if (first !== undefined) {
|
220 | var last = heap.pop();
|
221 |
|
222 | if (last !== first) {
|
223 | heap[0] = last;
|
224 | siftDown(heap, last, 0);
|
225 | }
|
226 |
|
227 | return first;
|
228 | } else {
|
229 | return null;
|
230 | }
|
231 | }
|
232 |
|
233 | function siftUp(heap, node, i) {
|
234 | var index = i;
|
235 |
|
236 | while (true) {
|
237 | var parentIndex = Math.floor((index - 1) / 2);
|
238 | var parent = heap[parentIndex];
|
239 |
|
240 | if (parent !== undefined && compare(parent, node) > 0) {
|
241 |
|
242 | heap[parentIndex] = node;
|
243 | heap[index] = parent;
|
244 | index = parentIndex;
|
245 | } else {
|
246 |
|
247 | return;
|
248 | }
|
249 | }
|
250 | }
|
251 |
|
252 | function siftDown(heap, node, i) {
|
253 | var index = i;
|
254 | var length = heap.length;
|
255 |
|
256 | while (index < length) {
|
257 | var leftIndex = (index + 1) * 2 - 1;
|
258 | var left = heap[leftIndex];
|
259 | var rightIndex = leftIndex + 1;
|
260 | var right = heap[rightIndex];
|
261 |
|
262 | if (left !== undefined && compare(left, node) < 0) {
|
263 | if (right !== undefined && compare(right, left) < 0) {
|
264 | heap[index] = right;
|
265 | heap[rightIndex] = node;
|
266 | index = rightIndex;
|
267 | } else {
|
268 | heap[index] = left;
|
269 | heap[leftIndex] = node;
|
270 | index = leftIndex;
|
271 | }
|
272 | } else if (right !== undefined && compare(right, node) < 0) {
|
273 | heap[index] = right;
|
274 | heap[rightIndex] = node;
|
275 | index = rightIndex;
|
276 | } else {
|
277 |
|
278 | return;
|
279 | }
|
280 | }
|
281 | }
|
282 |
|
283 | function compare(a, b) {
|
284 |
|
285 | var diff = a.sortIndex - b.sortIndex;
|
286 | return diff !== 0 ? diff : a.id - b.id;
|
287 | }
|
288 |
|
289 |
|
290 | var NoPriority = 0;
|
291 | var ImmediatePriority = 1;
|
292 | var UserBlockingPriority = 2;
|
293 | var NormalPriority = 3;
|
294 | var LowPriority = 4;
|
295 | var IdlePriority = 5;
|
296 |
|
297 | var runIdCounter = 0;
|
298 | var mainThreadIdCounter = 0;
|
299 | var profilingStateSize = 4;
|
300 | var sharedProfilingBuffer = enableProfiling ?
|
301 | typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) :
|
302 | typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null
|
303 | : null;
|
304 | var profilingState = enableProfiling && sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : [];
|
305 |
|
306 | var PRIORITY = 0;
|
307 | var CURRENT_TASK_ID = 1;
|
308 | var CURRENT_RUN_ID = 2;
|
309 | var QUEUE_SIZE = 3;
|
310 |
|
311 | if (enableProfiling) {
|
312 | profilingState[PRIORITY] = NoPriority;
|
313 |
|
314 |
|
315 | profilingState[QUEUE_SIZE] = 0;
|
316 | profilingState[CURRENT_TASK_ID] = 0;
|
317 | }
|
318 |
|
319 |
|
320 | var INITIAL_EVENT_LOG_SIZE = 131072;
|
321 | var MAX_EVENT_LOG_SIZE = 524288;
|
322 |
|
323 | var eventLogSize = 0;
|
324 | var eventLogBuffer = null;
|
325 | var eventLog = null;
|
326 | var eventLogIndex = 0;
|
327 | var TaskStartEvent = 1;
|
328 | var TaskCompleteEvent = 2;
|
329 | var TaskErrorEvent = 3;
|
330 | var TaskCancelEvent = 4;
|
331 | var TaskRunEvent = 5;
|
332 | var TaskYieldEvent = 6;
|
333 | var SchedulerSuspendEvent = 7;
|
334 | var SchedulerResumeEvent = 8;
|
335 |
|
336 | function logEvent(entries) {
|
337 | if (eventLog !== null) {
|
338 | var offset = eventLogIndex;
|
339 | eventLogIndex += entries.length;
|
340 |
|
341 | if (eventLogIndex + 1 > eventLogSize) {
|
342 | eventLogSize *= 2;
|
343 |
|
344 | if (eventLogSize > MAX_EVENT_LOG_SIZE) {
|
345 | console.error("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
|
346 | stopLoggingProfilingEvents();
|
347 | return;
|
348 | }
|
349 |
|
350 | var newEventLog = new Int32Array(eventLogSize * 4);
|
351 | newEventLog.set(eventLog);
|
352 | eventLogBuffer = newEventLog.buffer;
|
353 | eventLog = newEventLog;
|
354 | }
|
355 |
|
356 | eventLog.set(entries, offset);
|
357 | }
|
358 | }
|
359 |
|
360 | function startLoggingProfilingEvents() {
|
361 | eventLogSize = INITIAL_EVENT_LOG_SIZE;
|
362 | eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
|
363 | eventLog = new Int32Array(eventLogBuffer);
|
364 | eventLogIndex = 0;
|
365 | }
|
366 | function stopLoggingProfilingEvents() {
|
367 | var buffer = eventLogBuffer;
|
368 | eventLogSize = 0;
|
369 | eventLogBuffer = null;
|
370 | eventLog = null;
|
371 | eventLogIndex = 0;
|
372 | return buffer;
|
373 | }
|
374 | function markTaskStart(task, ms) {
|
375 | if (enableProfiling) {
|
376 | profilingState[QUEUE_SIZE]++;
|
377 |
|
378 | if (eventLog !== null) {
|
379 |
|
380 |
|
381 |
|
382 | logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
|
383 | }
|
384 | }
|
385 | }
|
386 | function markTaskCompleted(task, ms) {
|
387 | if (enableProfiling) {
|
388 | profilingState[PRIORITY] = NoPriority;
|
389 | profilingState[CURRENT_TASK_ID] = 0;
|
390 | profilingState[QUEUE_SIZE]--;
|
391 |
|
392 | if (eventLog !== null) {
|
393 | logEvent([TaskCompleteEvent, ms * 1000, task.id]);
|
394 | }
|
395 | }
|
396 | }
|
397 | function markTaskCanceled(task, ms) {
|
398 | if (enableProfiling) {
|
399 | profilingState[QUEUE_SIZE]--;
|
400 |
|
401 | if (eventLog !== null) {
|
402 | logEvent([TaskCancelEvent, ms * 1000, task.id]);
|
403 | }
|
404 | }
|
405 | }
|
406 | function markTaskErrored(task, ms) {
|
407 | if (enableProfiling) {
|
408 | profilingState[PRIORITY] = NoPriority;
|
409 | profilingState[CURRENT_TASK_ID] = 0;
|
410 | profilingState[QUEUE_SIZE]--;
|
411 |
|
412 | if (eventLog !== null) {
|
413 | logEvent([TaskErrorEvent, ms * 1000, task.id]);
|
414 | }
|
415 | }
|
416 | }
|
417 | function markTaskRun(task, ms) {
|
418 | if (enableProfiling) {
|
419 | runIdCounter++;
|
420 | profilingState[PRIORITY] = task.priorityLevel;
|
421 | profilingState[CURRENT_TASK_ID] = task.id;
|
422 | profilingState[CURRENT_RUN_ID] = runIdCounter;
|
423 |
|
424 | if (eventLog !== null) {
|
425 | logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
|
426 | }
|
427 | }
|
428 | }
|
429 | function markTaskYield(task, ms) {
|
430 | if (enableProfiling) {
|
431 | profilingState[PRIORITY] = NoPriority;
|
432 | profilingState[CURRENT_TASK_ID] = 0;
|
433 | profilingState[CURRENT_RUN_ID] = 0;
|
434 |
|
435 | if (eventLog !== null) {
|
436 | logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
|
437 | }
|
438 | }
|
439 | }
|
440 | function markSchedulerSuspended(ms) {
|
441 | if (enableProfiling) {
|
442 | mainThreadIdCounter++;
|
443 |
|
444 | if (eventLog !== null) {
|
445 | logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
|
446 | }
|
447 | }
|
448 | }
|
449 | function markSchedulerUnsuspended(ms) {
|
450 | if (enableProfiling) {
|
451 | if (eventLog !== null) {
|
452 | logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
|
453 | }
|
454 | }
|
455 | }
|
456 |
|
457 |
|
458 |
|
459 |
|
460 |
|
461 | var maxSigned31BitInt = 1073741823;
|
462 |
|
463 | var IMMEDIATE_PRIORITY_TIMEOUT = -1;
|
464 |
|
465 | var USER_BLOCKING_PRIORITY = 250;
|
466 | var NORMAL_PRIORITY_TIMEOUT = 5000;
|
467 | var LOW_PRIORITY_TIMEOUT = 10000;
|
468 |
|
469 | var IDLE_PRIORITY = maxSigned31BitInt;
|
470 |
|
471 | var taskQueue = [];
|
472 | var timerQueue = [];
|
473 |
|
474 | var taskIdCounter = 1;
|
475 |
|
476 | var isSchedulerPaused = false;
|
477 | var currentTask = null;
|
478 | var currentPriorityLevel = NormalPriority;
|
479 |
|
480 | var isPerformingWork = false;
|
481 | var isHostCallbackScheduled = false;
|
482 | var isHostTimeoutScheduled = false;
|
483 |
|
484 | function advanceTimers(currentTime) {
|
485 |
|
486 | var timer = peek(timerQueue);
|
487 |
|
488 | while (timer !== null) {
|
489 | if (timer.callback === null) {
|
490 |
|
491 | pop(timerQueue);
|
492 | } else if (timer.startTime <= currentTime) {
|
493 |
|
494 | pop(timerQueue);
|
495 | timer.sortIndex = timer.expirationTime;
|
496 | push(taskQueue, timer);
|
497 |
|
498 | if (enableProfiling) {
|
499 | markTaskStart(timer, currentTime);
|
500 | timer.isQueued = true;
|
501 | }
|
502 | } else {
|
503 |
|
504 | return;
|
505 | }
|
506 |
|
507 | timer = peek(timerQueue);
|
508 | }
|
509 | }
|
510 |
|
511 | function handleTimeout(currentTime) {
|
512 | isHostTimeoutScheduled = false;
|
513 | advanceTimers(currentTime);
|
514 |
|
515 | if (!isHostCallbackScheduled) {
|
516 | if (peek(taskQueue) !== null) {
|
517 | isHostCallbackScheduled = true;
|
518 | requestHostCallback(flushWork);
|
519 | } else {
|
520 | var firstTimer = peek(timerQueue);
|
521 |
|
522 | if (firstTimer !== null) {
|
523 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
524 | }
|
525 | }
|
526 | }
|
527 | }
|
528 |
|
529 | function flushWork(hasTimeRemaining, initialTime) {
|
530 | if (enableProfiling) {
|
531 | markSchedulerUnsuspended(initialTime);
|
532 | }
|
533 |
|
534 |
|
535 | isHostCallbackScheduled = false;
|
536 |
|
537 | if (isHostTimeoutScheduled) {
|
538 |
|
539 | isHostTimeoutScheduled = false;
|
540 | cancelHostTimeout();
|
541 | }
|
542 |
|
543 | isPerformingWork = true;
|
544 | var previousPriorityLevel = currentPriorityLevel;
|
545 |
|
546 | try {
|
547 | if (enableProfiling) {
|
548 | try {
|
549 | return workLoop(hasTimeRemaining, initialTime);
|
550 | } catch (error) {
|
551 | if (currentTask !== null) {
|
552 | var currentTime = getCurrentTime();
|
553 | markTaskErrored(currentTask, currentTime);
|
554 | currentTask.isQueued = false;
|
555 | }
|
556 |
|
557 | throw error;
|
558 | }
|
559 | } else {
|
560 |
|
561 | return workLoop(hasTimeRemaining, initialTime);
|
562 | }
|
563 | } finally {
|
564 | currentTask = null;
|
565 | currentPriorityLevel = previousPriorityLevel;
|
566 | isPerformingWork = false;
|
567 |
|
568 | if (enableProfiling) {
|
569 | var _currentTime = getCurrentTime();
|
570 |
|
571 | markSchedulerSuspended(_currentTime);
|
572 | }
|
573 | }
|
574 | }
|
575 |
|
576 | function workLoop(hasTimeRemaining, initialTime) {
|
577 | var currentTime = initialTime;
|
578 | advanceTimers(currentTime);
|
579 | currentTask = peek(taskQueue);
|
580 |
|
581 | while (currentTask !== null && !(enableSchedulerDebugging && isSchedulerPaused)) {
|
582 | if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
|
583 |
|
584 | break;
|
585 | }
|
586 |
|
587 | var callback = currentTask.callback;
|
588 |
|
589 | if (callback !== null) {
|
590 | currentTask.callback = null;
|
591 | currentPriorityLevel = currentTask.priorityLevel;
|
592 | var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
|
593 | markTaskRun(currentTask, currentTime);
|
594 | var continuationCallback = callback(didUserCallbackTimeout);
|
595 | currentTime = getCurrentTime();
|
596 |
|
597 | if (typeof continuationCallback === 'function') {
|
598 | currentTask.callback = continuationCallback;
|
599 | markTaskYield(currentTask, currentTime);
|
600 | } else {
|
601 | if (enableProfiling) {
|
602 | markTaskCompleted(currentTask, currentTime);
|
603 | currentTask.isQueued = false;
|
604 | }
|
605 |
|
606 | if (currentTask === peek(taskQueue)) {
|
607 | pop(taskQueue);
|
608 | }
|
609 | }
|
610 |
|
611 | advanceTimers(currentTime);
|
612 | } else {
|
613 | pop(taskQueue);
|
614 | }
|
615 |
|
616 | currentTask = peek(taskQueue);
|
617 | }
|
618 |
|
619 |
|
620 | if (currentTask !== null) {
|
621 | return true;
|
622 | } else {
|
623 | var firstTimer = peek(timerQueue);
|
624 |
|
625 | if (firstTimer !== null) {
|
626 | requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
|
627 | }
|
628 |
|
629 | return false;
|
630 | }
|
631 | }
|
632 |
|
633 | function unstable_runWithPriority(priorityLevel, eventHandler) {
|
634 | switch (priorityLevel) {
|
635 | case ImmediatePriority:
|
636 | case UserBlockingPriority:
|
637 | case NormalPriority:
|
638 | case LowPriority:
|
639 | case IdlePriority:
|
640 | break;
|
641 |
|
642 | default:
|
643 | priorityLevel = NormalPriority;
|
644 | }
|
645 |
|
646 | var previousPriorityLevel = currentPriorityLevel;
|
647 | currentPriorityLevel = priorityLevel;
|
648 |
|
649 | try {
|
650 | return eventHandler();
|
651 | } finally {
|
652 | currentPriorityLevel = previousPriorityLevel;
|
653 | }
|
654 | }
|
655 |
|
656 | function unstable_next(eventHandler) {
|
657 | var priorityLevel;
|
658 |
|
659 | switch (currentPriorityLevel) {
|
660 | case ImmediatePriority:
|
661 | case UserBlockingPriority:
|
662 | case NormalPriority:
|
663 |
|
664 | priorityLevel = NormalPriority;
|
665 | break;
|
666 |
|
667 | default:
|
668 |
|
669 | priorityLevel = currentPriorityLevel;
|
670 | break;
|
671 | }
|
672 |
|
673 | var previousPriorityLevel = currentPriorityLevel;
|
674 | currentPriorityLevel = priorityLevel;
|
675 |
|
676 | try {
|
677 | return eventHandler();
|
678 | } finally {
|
679 | currentPriorityLevel = previousPriorityLevel;
|
680 | }
|
681 | }
|
682 |
|
683 | function unstable_wrapCallback(callback) {
|
684 | var parentPriorityLevel = currentPriorityLevel;
|
685 | return function () {
|
686 |
|
687 | var previousPriorityLevel = currentPriorityLevel;
|
688 | currentPriorityLevel = parentPriorityLevel;
|
689 |
|
690 | try {
|
691 | return callback.apply(this, arguments);
|
692 | } finally {
|
693 | currentPriorityLevel = previousPriorityLevel;
|
694 | }
|
695 | };
|
696 | }
|
697 |
|
698 | function timeoutForPriorityLevel(priorityLevel) {
|
699 | switch (priorityLevel) {
|
700 | case ImmediatePriority:
|
701 | return IMMEDIATE_PRIORITY_TIMEOUT;
|
702 |
|
703 | case UserBlockingPriority:
|
704 | return USER_BLOCKING_PRIORITY;
|
705 |
|
706 | case IdlePriority:
|
707 | return IDLE_PRIORITY;
|
708 |
|
709 | case LowPriority:
|
710 | return LOW_PRIORITY_TIMEOUT;
|
711 |
|
712 | case NormalPriority:
|
713 | default:
|
714 | return NORMAL_PRIORITY_TIMEOUT;
|
715 | }
|
716 | }
|
717 |
|
718 | function unstable_scheduleCallback(priorityLevel, callback, options) {
|
719 | var currentTime = getCurrentTime();
|
720 | var startTime;
|
721 | var timeout;
|
722 |
|
723 | if (typeof options === 'object' && options !== null) {
|
724 | var delay = options.delay;
|
725 |
|
726 | if (typeof delay === 'number' && delay > 0) {
|
727 | startTime = currentTime + delay;
|
728 | } else {
|
729 | startTime = currentTime;
|
730 | }
|
731 |
|
732 | timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel);
|
733 | } else {
|
734 | timeout = timeoutForPriorityLevel(priorityLevel);
|
735 | startTime = currentTime;
|
736 | }
|
737 |
|
738 | var expirationTime = startTime + timeout;
|
739 | var newTask = {
|
740 | id: taskIdCounter++,
|
741 | callback: callback,
|
742 | priorityLevel: priorityLevel,
|
743 | startTime: startTime,
|
744 | expirationTime: expirationTime,
|
745 | sortIndex: -1
|
746 | };
|
747 |
|
748 | if (enableProfiling) {
|
749 | newTask.isQueued = false;
|
750 | }
|
751 |
|
752 | if (startTime > currentTime) {
|
753 |
|
754 | newTask.sortIndex = startTime;
|
755 | push(timerQueue, newTask);
|
756 |
|
757 | if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
|
758 |
|
759 | if (isHostTimeoutScheduled) {
|
760 |
|
761 | cancelHostTimeout();
|
762 | } else {
|
763 | isHostTimeoutScheduled = true;
|
764 | }
|
765 |
|
766 |
|
767 | requestHostTimeout(handleTimeout, startTime - currentTime);
|
768 | }
|
769 | } else {
|
770 | newTask.sortIndex = expirationTime;
|
771 | push(taskQueue, newTask);
|
772 |
|
773 | if (enableProfiling) {
|
774 | markTaskStart(newTask, currentTime);
|
775 | newTask.isQueued = true;
|
776 | }
|
777 |
|
778 |
|
779 |
|
780 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
781 | isHostCallbackScheduled = true;
|
782 | requestHostCallback(flushWork);
|
783 | }
|
784 | }
|
785 |
|
786 | return newTask;
|
787 | }
|
788 |
|
789 | function unstable_pauseExecution() {
|
790 | isSchedulerPaused = true;
|
791 | }
|
792 |
|
793 | function unstable_continueExecution() {
|
794 | isSchedulerPaused = false;
|
795 |
|
796 | if (!isHostCallbackScheduled && !isPerformingWork) {
|
797 | isHostCallbackScheduled = true;
|
798 | requestHostCallback(flushWork);
|
799 | }
|
800 | }
|
801 |
|
802 | function unstable_getFirstCallbackNode() {
|
803 | return peek(taskQueue);
|
804 | }
|
805 |
|
806 | function unstable_cancelCallback(task) {
|
807 | if (enableProfiling) {
|
808 | if (task.isQueued) {
|
809 | var currentTime = getCurrentTime();
|
810 | markTaskCanceled(task, currentTime);
|
811 | task.isQueued = false;
|
812 | }
|
813 | }
|
814 |
|
815 |
|
816 |
|
817 |
|
818 | task.callback = null;
|
819 | }
|
820 |
|
821 | function unstable_getCurrentPriorityLevel() {
|
822 | return currentPriorityLevel;
|
823 | }
|
824 |
|
825 | function unstable_shouldYield() {
|
826 | var currentTime = getCurrentTime();
|
827 | advanceTimers(currentTime);
|
828 | var firstTask = peek(taskQueue);
|
829 | return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost();
|
830 | }
|
831 |
|
832 | var unstable_requestPaint = requestPaint;
|
833 | var unstable_Profiling = enableProfiling ? {
|
834 | startLoggingProfilingEvents: startLoggingProfilingEvents,
|
835 | stopLoggingProfilingEvents: stopLoggingProfilingEvents,
|
836 | sharedProfilingBuffer: sharedProfilingBuffer
|
837 | } : null;
|
838 |
|
839 | exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
|
840 | exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
|
841 | exports.unstable_flushExpired = unstable_flushExpired;
|
842 | exports.unstable_clearYields = unstable_clearYields;
|
843 | exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
|
844 | exports.unstable_flushAll = unstable_flushAll;
|
845 | exports.unstable_yieldValue = unstable_yieldValue;
|
846 | exports.unstable_advanceTime = unstable_advanceTime;
|
847 | exports.unstable_ImmediatePriority = ImmediatePriority;
|
848 | exports.unstable_UserBlockingPriority = UserBlockingPriority;
|
849 | exports.unstable_NormalPriority = NormalPriority;
|
850 | exports.unstable_IdlePriority = IdlePriority;
|
851 | exports.unstable_LowPriority = LowPriority;
|
852 | exports.unstable_runWithPriority = unstable_runWithPriority;
|
853 | exports.unstable_next = unstable_next;
|
854 | exports.unstable_scheduleCallback = unstable_scheduleCallback;
|
855 | exports.unstable_cancelCallback = unstable_cancelCallback;
|
856 | exports.unstable_wrapCallback = unstable_wrapCallback;
|
857 | exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
|
858 | exports.unstable_shouldYield = unstable_shouldYield;
|
859 | exports.unstable_requestPaint = unstable_requestPaint;
|
860 | exports.unstable_continueExecution = unstable_continueExecution;
|
861 | exports.unstable_pauseExecution = unstable_pauseExecution;
|
862 | exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
|
863 | exports.unstable_now = getCurrentTime;
|
864 | exports.unstable_forceFrameRate = forceFrameRate;
|
865 | exports.unstable_Profiling = unstable_Profiling;
|
866 |
|
867 | Object.defineProperty(exports, '__esModule', { value: true });
|
868 |
|
869 | })));
|