| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "cc/scheduler/delay_based_time_source.h" | |
| 6 | |
| 7 #include "base/basictypes.h" | |
| 8 #include "base/test/test_simple_task_runner.h" | |
| 9 #include "cc/test/scheduler_test_common.h" | |
| 10 #include "testing/gtest/include/gtest/gtest.h" | |
| 11 | |
| 12 namespace cc { | |
| 13 namespace { | |
| 14 | |
| 15 base::TimeDelta Interval() { | |
| 16 return base::TimeDelta::FromMicroseconds(base::Time::kMicrosecondsPerSecond / | |
| 17 60); | |
| 18 } | |
| 19 | |
| 20 TEST(DelayBasedTimeSourceTest, TaskPostedAndTickCalled) { | |
| 21 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 22 new base::TestSimpleTaskRunner; | |
| 23 FakeTimeSourceClient client; | |
| 24 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 25 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 26 timer->SetClient(&client); | |
| 27 | |
| 28 timer->SetActive(true); | |
| 29 EXPECT_TRUE(timer->Active()); | |
| 30 EXPECT_TRUE(task_runner->HasPendingTask()); | |
| 31 | |
| 32 timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(16)); | |
| 33 task_runner->RunPendingTasks(); | |
| 34 EXPECT_TRUE(timer->Active()); | |
| 35 EXPECT_TRUE(client.TickCalled()); | |
| 36 } | |
| 37 | |
| 38 TEST(DelayBasedTimeSourceTest, TickNotCalledWithTaskPosted) { | |
| 39 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 40 new base::TestSimpleTaskRunner; | |
| 41 FakeTimeSourceClient client; | |
| 42 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 43 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 44 timer->SetClient(&client); | |
| 45 timer->SetActive(true); | |
| 46 EXPECT_TRUE(task_runner->HasPendingTask()); | |
| 47 timer->SetActive(false); | |
| 48 task_runner->RunPendingTasks(); | |
| 49 EXPECT_FALSE(client.TickCalled()); | |
| 50 } | |
| 51 | |
| 52 TEST(DelayBasedTimeSourceTest, StartTwiceEnqueuesOneTask) { | |
| 53 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 54 new base::TestSimpleTaskRunner; | |
| 55 FakeTimeSourceClient client; | |
| 56 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 57 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 58 timer->SetClient(&client); | |
| 59 timer->SetActive(true); | |
| 60 EXPECT_TRUE(task_runner->HasPendingTask()); | |
| 61 task_runner->ClearPendingTasks(); | |
| 62 timer->SetActive(true); | |
| 63 EXPECT_FALSE(task_runner->HasPendingTask()); | |
| 64 } | |
| 65 | |
| 66 TEST(DelayBasedTimeSourceTest, StartWhenRunningDoesntTick) { | |
| 67 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 68 new base::TestSimpleTaskRunner; | |
| 69 FakeTimeSourceClient client; | |
| 70 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 71 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 72 timer->SetClient(&client); | |
| 73 timer->SetActive(true); | |
| 74 EXPECT_TRUE(task_runner->HasPendingTask()); | |
| 75 task_runner->RunPendingTasks(); | |
| 76 task_runner->ClearPendingTasks(); | |
| 77 timer->SetActive(true); | |
| 78 EXPECT_FALSE(task_runner->HasPendingTask()); | |
| 79 } | |
| 80 | |
| 81 // At 60Hz, when the tick returns at exactly the requested next time, make sure | |
| 82 // a 16ms next delay is posted. | |
| 83 TEST(DelayBasedTimeSourceTest, NextDelaySaneWhenExactlyOnRequestedTime) { | |
| 84 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 85 new base::TestSimpleTaskRunner; | |
| 86 FakeTimeSourceClient client; | |
| 87 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 88 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 89 timer->SetClient(&client); | |
| 90 timer->SetActive(true); | |
| 91 // Run the first tick. | |
| 92 task_runner->RunPendingTasks(); | |
| 93 | |
| 94 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 95 | |
| 96 timer->SetNow(timer->Now() + Interval()); | |
| 97 task_runner->RunPendingTasks(); | |
| 98 | |
| 99 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 100 } | |
| 101 | |
| 102 // At 60Hz, when the tick returns at slightly after the requested next time, | |
| 103 // make sure a 16ms next delay is posted. | |
| 104 TEST(DelayBasedTimeSourceTest, NextDelaySaneWhenSlightlyAfterRequestedTime) { | |
| 105 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 106 new base::TestSimpleTaskRunner; | |
| 107 FakeTimeSourceClient client; | |
| 108 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 109 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 110 timer->SetClient(&client); | |
| 111 timer->SetActive(true); | |
| 112 // Run the first tick. | |
| 113 task_runner->RunPendingTasks(); | |
| 114 | |
| 115 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 116 | |
| 117 timer->SetNow(timer->Now() + Interval() + | |
| 118 base::TimeDelta::FromMicroseconds(1)); | |
| 119 task_runner->RunPendingTasks(); | |
| 120 | |
| 121 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 122 } | |
| 123 | |
| 124 // At 60Hz, when the tick returns at exactly 2*interval after the requested next | |
| 125 // time, make sure a 0ms next delay is posted. | |
| 126 TEST(DelayBasedTimeSourceTest, | |
| 127 NextDelaySaneWhenExactlyTwiceAfterRequestedTime) { | |
| 128 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 129 new base::TestSimpleTaskRunner; | |
| 130 FakeTimeSourceClient client; | |
| 131 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 132 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 133 timer->SetClient(&client); | |
| 134 timer->SetActive(true); | |
| 135 // Run the first tick. | |
| 136 task_runner->RunPendingTasks(); | |
| 137 | |
| 138 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 139 | |
| 140 timer->SetNow(timer->Now() + 2 * Interval()); | |
| 141 task_runner->RunPendingTasks(); | |
| 142 | |
| 143 EXPECT_EQ(0, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 144 } | |
| 145 | |
| 146 // At 60Hz, when the tick returns at 2*interval and a bit after the requested | |
| 147 // next time, make sure a 16ms next delay is posted. | |
| 148 TEST(DelayBasedTimeSourceTest, | |
| 149 NextDelaySaneWhenSlightlyAfterTwiceRequestedTime) { | |
| 150 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 151 new base::TestSimpleTaskRunner; | |
| 152 FakeTimeSourceClient client; | |
| 153 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 154 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 155 timer->SetClient(&client); | |
| 156 timer->SetActive(true); | |
| 157 // Run the first tick. | |
| 158 task_runner->RunPendingTasks(); | |
| 159 | |
| 160 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 161 | |
| 162 timer->SetNow(timer->Now() + 2 * Interval() + | |
| 163 base::TimeDelta::FromMicroseconds(1)); | |
| 164 task_runner->RunPendingTasks(); | |
| 165 | |
| 166 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 167 } | |
| 168 | |
| 169 // At 60Hz, when the tick returns halfway to the next frame time, make sure | |
| 170 // a correct next delay value is posted. | |
| 171 TEST(DelayBasedTimeSourceTest, NextDelaySaneWhenHalfAfterRequestedTime) { | |
| 172 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 173 new base::TestSimpleTaskRunner; | |
| 174 FakeTimeSourceClient client; | |
| 175 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 176 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 177 timer->SetClient(&client); | |
| 178 timer->SetActive(true); | |
| 179 // Run the first tick. | |
| 180 task_runner->RunPendingTasks(); | |
| 181 | |
| 182 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 183 | |
| 184 timer->SetNow(timer->Now() + Interval() + | |
| 185 base::TimeDelta::FromMilliseconds(8)); | |
| 186 task_runner->RunPendingTasks(); | |
| 187 | |
| 188 EXPECT_EQ(8, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 189 } | |
| 190 | |
| 191 // If the timebase and interval are updated with a jittery source, we want to | |
| 192 // make sure we do not double tick. | |
| 193 TEST(DelayBasedTimeSourceTest, SaneHandlingOfJitteryTimebase) { | |
| 194 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 195 new base::TestSimpleTaskRunner; | |
| 196 FakeTimeSourceClient client; | |
| 197 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 198 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 199 timer->SetClient(&client); | |
| 200 timer->SetActive(true); | |
| 201 // Run the first tick. | |
| 202 task_runner->RunPendingTasks(); | |
| 203 | |
| 204 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 205 | |
| 206 // Jitter timebase ~1ms late | |
| 207 timer->SetNow(timer->Now() + Interval()); | |
| 208 timer->SetTimebaseAndInterval( | |
| 209 timer->Now() + base::TimeDelta::FromMilliseconds(1), Interval()); | |
| 210 task_runner->RunPendingTasks(); | |
| 211 | |
| 212 // Without double tick prevention, NextPendingTaskDelay would be 1. | |
| 213 EXPECT_EQ(17, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 214 | |
| 215 // Jitter timebase ~1ms early | |
| 216 timer->SetNow(timer->Now() + Interval()); | |
| 217 timer->SetTimebaseAndInterval( | |
| 218 timer->Now() - base::TimeDelta::FromMilliseconds(1), Interval()); | |
| 219 task_runner->RunPendingTasks(); | |
| 220 | |
| 221 EXPECT_EQ(15, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 222 } | |
| 223 | |
| 224 TEST(DelayBasedTimeSourceTest, HandlesSignificantTimebaseChangesImmediately) { | |
| 225 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 226 new base::TestSimpleTaskRunner; | |
| 227 FakeTimeSourceClient client; | |
| 228 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 229 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 230 timer->SetClient(&client); | |
| 231 timer->SetActive(true); | |
| 232 // Run the first tick. | |
| 233 task_runner->RunPendingTasks(); | |
| 234 | |
| 235 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 236 | |
| 237 // Tick, then shift timebase by +7ms. | |
| 238 timer->SetNow(timer->Now() + Interval()); | |
| 239 task_runner->RunPendingTasks(); | |
| 240 | |
| 241 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 242 | |
| 243 client.Reset(); | |
| 244 task_runner->ClearPendingTasks(); | |
| 245 task_runner->RunPendingTasks(); | |
| 246 base::TimeDelta jitter = base::TimeDelta::FromMilliseconds(7) + | |
| 247 base::TimeDelta::FromMicroseconds(1); | |
| 248 timer->SetTimebaseAndInterval(timer->Now() + jitter, Interval()); | |
| 249 | |
| 250 EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled. | |
| 251 EXPECT_EQ(16 + 7, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 252 | |
| 253 // Tick, then shift timebase by -7ms. | |
| 254 timer->SetNow(timer->Now() + Interval() + jitter); | |
| 255 task_runner->RunPendingTasks(); | |
| 256 | |
| 257 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 258 | |
| 259 client.Reset(); | |
| 260 task_runner->ClearPendingTasks(); | |
| 261 task_runner->RunPendingTasks(); | |
| 262 timer->SetTimebaseAndInterval(base::TimeTicks() + Interval(), Interval()); | |
| 263 | |
| 264 EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled. | |
| 265 EXPECT_EQ(16 - 7, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 266 } | |
| 267 | |
| 268 TEST(DelayBasedTimeSourceTest, HanldlesSignificantIntervalChangesImmediately) { | |
| 269 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 270 new base::TestSimpleTaskRunner; | |
| 271 FakeTimeSourceClient client; | |
| 272 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 273 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 274 timer->SetClient(&client); | |
| 275 timer->SetActive(true); | |
| 276 // Run the first tick. | |
| 277 task_runner->RunPendingTasks(); | |
| 278 | |
| 279 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 280 | |
| 281 // Tick, then double the interval. | |
| 282 timer->SetNow(timer->Now() + Interval()); | |
| 283 task_runner->RunPendingTasks(); | |
| 284 | |
| 285 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 286 | |
| 287 client.Reset(); | |
| 288 task_runner->ClearPendingTasks(); | |
| 289 task_runner->RunPendingTasks(); | |
| 290 timer->SetTimebaseAndInterval(base::TimeTicks() + Interval(), Interval() * 2); | |
| 291 | |
| 292 EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled. | |
| 293 EXPECT_EQ(33, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 294 | |
| 295 // Tick, then halve the interval. | |
| 296 timer->SetNow(timer->Now() + Interval() * 2); | |
| 297 task_runner->RunPendingTasks(); | |
| 298 | |
| 299 EXPECT_EQ(33, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 300 | |
| 301 client.Reset(); | |
| 302 task_runner->ClearPendingTasks(); | |
| 303 task_runner->RunPendingTasks(); | |
| 304 timer->SetTimebaseAndInterval(base::TimeTicks() + Interval() * 3, Interval()); | |
| 305 | |
| 306 EXPECT_FALSE(client.TickCalled()); // Make sure pending tasks were canceled. | |
| 307 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 308 } | |
| 309 | |
| 310 TEST(DelayBasedTimeSourceTest, JitteryRuntimeWithFutureTimebases) { | |
| 311 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 312 new base::TestSimpleTaskRunner; | |
| 313 FakeTimeSourceClient client; | |
| 314 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 315 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 316 timer->SetClient(&client); | |
| 317 timer->SetActive(true); | |
| 318 | |
| 319 // Run the first tick. | |
| 320 task_runner->RunPendingTasks(); | |
| 321 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 322 | |
| 323 base::TimeTicks future_timebase = timer->Now() + Interval() * 10; | |
| 324 | |
| 325 // 1ms jitter | |
| 326 base::TimeDelta jitter1 = base::TimeDelta::FromMilliseconds(1); | |
| 327 | |
| 328 // Tick with +1ms of jitter | |
| 329 future_timebase += Interval(); | |
| 330 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 331 timer->SetNow(timer->Now() + Interval() + jitter1); | |
| 332 task_runner->RunPendingTasks(); | |
| 333 EXPECT_EQ(15, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 334 | |
| 335 // Tick with 0ms of jitter | |
| 336 future_timebase += Interval(); | |
| 337 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 338 timer->SetNow(timer->Now() + Interval() - jitter1); | |
| 339 task_runner->RunPendingTasks(); | |
| 340 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 341 | |
| 342 // Tick with -1ms of jitter | |
| 343 future_timebase += Interval(); | |
| 344 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 345 timer->SetNow(timer->Now() + Interval() - jitter1); | |
| 346 task_runner->RunPendingTasks(); | |
| 347 EXPECT_EQ(17, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 348 | |
| 349 // Tick with 0ms of jitter | |
| 350 future_timebase += Interval(); | |
| 351 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 352 timer->SetNow(timer->Now() + Interval() + jitter1); | |
| 353 task_runner->RunPendingTasks(); | |
| 354 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 355 | |
| 356 // 8 ms jitter | |
| 357 base::TimeDelta jitter8 = base::TimeDelta::FromMilliseconds(8); | |
| 358 | |
| 359 // Tick with +8ms of jitter | |
| 360 future_timebase += Interval(); | |
| 361 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 362 timer->SetNow(timer->Now() + Interval() + jitter8); | |
| 363 task_runner->RunPendingTasks(); | |
| 364 EXPECT_EQ(8, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 365 | |
| 366 // Tick with 0ms of jitter | |
| 367 future_timebase += Interval(); | |
| 368 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 369 timer->SetNow(timer->Now() + Interval() - jitter8); | |
| 370 task_runner->RunPendingTasks(); | |
| 371 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 372 | |
| 373 // Tick with -8ms of jitter | |
| 374 future_timebase += Interval(); | |
| 375 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 376 timer->SetNow(timer->Now() + Interval() - jitter8); | |
| 377 task_runner->RunPendingTasks(); | |
| 378 EXPECT_EQ(24, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 379 | |
| 380 // Tick with 0ms of jitter | |
| 381 future_timebase += Interval(); | |
| 382 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 383 timer->SetNow(timer->Now() + Interval() + jitter8); | |
| 384 task_runner->RunPendingTasks(); | |
| 385 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 386 | |
| 387 // 15 ms jitter | |
| 388 base::TimeDelta jitter15 = base::TimeDelta::FromMilliseconds(15); | |
| 389 | |
| 390 // Tick with +15ms jitter | |
| 391 future_timebase += Interval(); | |
| 392 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 393 timer->SetNow(timer->Now() + Interval() + jitter15); | |
| 394 task_runner->RunPendingTasks(); | |
| 395 EXPECT_EQ(1, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 396 | |
| 397 // Tick with 0ms of jitter | |
| 398 future_timebase += Interval(); | |
| 399 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 400 timer->SetNow(timer->Now() + Interval() - jitter15); | |
| 401 task_runner->RunPendingTasks(); | |
| 402 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 403 | |
| 404 // Tick with -15ms of jitter | |
| 405 future_timebase += Interval(); | |
| 406 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 407 timer->SetNow(timer->Now() + Interval() - jitter15); | |
| 408 task_runner->RunPendingTasks(); | |
| 409 EXPECT_EQ(31, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 410 | |
| 411 // Tick with 0ms of jitter | |
| 412 future_timebase += Interval(); | |
| 413 timer->SetTimebaseAndInterval(future_timebase, Interval()); | |
| 414 timer->SetNow(timer->Now() + Interval() + jitter15); | |
| 415 task_runner->RunPendingTasks(); | |
| 416 EXPECT_EQ(16, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 417 } | |
| 418 | |
| 419 TEST(DelayBasedTimeSourceTest, AchievesTargetRateWithNoNoise) { | |
| 420 int num_iterations = 10; | |
| 421 | |
| 422 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 423 new base::TestSimpleTaskRunner; | |
| 424 FakeTimeSourceClient client; | |
| 425 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 426 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 427 timer->SetClient(&client); | |
| 428 timer->SetActive(true); | |
| 429 | |
| 430 double total_frame_time = 0.0; | |
| 431 for (int i = 0; i < num_iterations; ++i) { | |
| 432 int64 delay_ms = task_runner->NextPendingTaskDelay().InMilliseconds(); | |
| 433 | |
| 434 // accumulate the "delay" | |
| 435 total_frame_time += delay_ms / 1000.0; | |
| 436 | |
| 437 // Run the callback exactly when asked | |
| 438 timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(delay_ms)); | |
| 439 task_runner->RunPendingTasks(); | |
| 440 } | |
| 441 double average_interval = | |
| 442 total_frame_time / static_cast<double>(num_iterations); | |
| 443 EXPECT_NEAR(1.0 / 60.0, average_interval, 0.1); | |
| 444 } | |
| 445 | |
| 446 TEST(DelayBasedTimeSourceTest, TestDeactivateWhilePending) { | |
| 447 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 448 new base::TestSimpleTaskRunner; | |
| 449 FakeTimeSourceClient client; | |
| 450 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 451 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 452 timer->SetClient(&client); | |
| 453 timer->SetActive(true); // Should post a task. | |
| 454 timer->SetActive(false); | |
| 455 timer = NULL; | |
| 456 // Should run the posted task without crashing. | |
| 457 EXPECT_TRUE(task_runner->HasPendingTask()); | |
| 458 task_runner->RunPendingTasks(); | |
| 459 } | |
| 460 | |
| 461 TEST(DelayBasedTimeSourceTest, TestDeactivateAndReactivateBeforeNextTickTime) { | |
| 462 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 463 new base::TestSimpleTaskRunner; | |
| 464 FakeTimeSourceClient client; | |
| 465 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 466 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 467 timer->SetClient(&client); | |
| 468 | |
| 469 // Should run the activate task, and pick up a new timebase. | |
| 470 timer->SetActive(true); | |
| 471 task_runner->RunPendingTasks(); | |
| 472 | |
| 473 // Stop the timer | |
| 474 timer->SetActive(false); | |
| 475 | |
| 476 // Task will be pending anyway, run it | |
| 477 task_runner->RunPendingTasks(); | |
| 478 | |
| 479 // Start the timer again, but before the next tick time the timer previously | |
| 480 // planned on using. That same tick time should still be targeted. | |
| 481 timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(4)); | |
| 482 timer->SetActive(true); | |
| 483 EXPECT_EQ(12, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 484 } | |
| 485 | |
| 486 TEST(DelayBasedTimeSourceTest, TestDeactivateAndReactivateAfterNextTickTime) { | |
| 487 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 488 new base::TestSimpleTaskRunner; | |
| 489 FakeTimeSourceClient client; | |
| 490 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 491 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 492 timer->SetClient(&client); | |
| 493 | |
| 494 // Should run the activate task, and pick up a new timebase. | |
| 495 timer->SetActive(true); | |
| 496 task_runner->RunPendingTasks(); | |
| 497 | |
| 498 // Stop the timer. | |
| 499 timer->SetActive(false); | |
| 500 | |
| 501 // Task will be pending anyway, run it. | |
| 502 task_runner->RunPendingTasks(); | |
| 503 | |
| 504 // Start the timer again, but before the next tick time the timer previously | |
| 505 // planned on using. That same tick time should still be targeted. | |
| 506 timer->SetNow(timer->Now() + base::TimeDelta::FromMilliseconds(20)); | |
| 507 timer->SetActive(true); | |
| 508 EXPECT_EQ(13, task_runner->NextPendingTaskDelay().InMilliseconds()); | |
| 509 } | |
| 510 | |
| 511 TEST(DelayBasedTimeSourceTest, TestReturnValueWhenTimerIsDeActivated) { | |
| 512 scoped_refptr<base::TestSimpleTaskRunner> task_runner = | |
| 513 new base::TestSimpleTaskRunner; | |
| 514 FakeTimeSourceClient client; | |
| 515 scoped_refptr<FakeDelayBasedTimeSource> timer = | |
| 516 FakeDelayBasedTimeSource::Create(Interval(), task_runner.get()); | |
| 517 timer->SetClient(&client); | |
| 518 | |
| 519 timer->SetActive(true); | |
| 520 task_runner->RunPendingTasks(); | |
| 521 | |
| 522 // SetActive should return empty TimeTicks when the timer is deactivated. | |
| 523 base::TimeTicks missed_tick_time = timer->SetActive(false); | |
| 524 EXPECT_TRUE(missed_tick_time.is_null()); | |
| 525 } | |
| 526 | |
| 527 } // namespace | |
| 528 } // namespace cc | |
| OLD | NEW |
|---|
Chromium Code Reviews
