| /* |
| * Copyright 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.benchmark.benchmark |
| |
| import android.opengl.Matrix |
| import androidx.benchmark.junit4.BenchmarkRule |
| import androidx.benchmark.junit4.measureRepeated |
| import androidx.test.ext.junit.runners.AndroidJUnit4 |
| import androidx.test.filters.LargeTest |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| |
| /** |
| * This benchmark is designed to show the difference between environments with minimum clocks |
| * set, and those without. |
| * |
| * The lowest levels of the clock stability waterfall (stable performance mode, and throttle |
| * detection) are expected to show bigger variations between the two methods, and less stability in |
| * [matrixMathSleepy]. |
| */ |
| @LargeTest |
| @RunWith(AndroidJUnit4::class) |
| class SleepyBenchmark { |
| @get:Rule |
| val benchmarkRule = BenchmarkRule() |
| |
| val sourceMatrix = FloatArray(16) { it.toFloat() } |
| val resultMatrix = FloatArray(16) |
| |
| @Suppress("NOTHING_TO_INLINE") |
| inline fun theyDidTheMatrixMath() { |
| repeat(10) { |
| Matrix.translateM(resultMatrix, 0, sourceMatrix, 0, 1F, 2F, 3F) |
| } |
| } |
| |
| @Test |
| fun matrixMathSleepy() { |
| benchmarkRule.measureRepeated { |
| theyDidTheMatrixMath() |
| |
| runWithTimingDisabled { |
| Thread.sleep(10) |
| theyDidTheMatrixMath() // reheat the cache |
| } |
| } |
| } |
| |
| @Test |
| fun matrixMath() { |
| benchmarkRule.measureRepeated { |
| theyDidTheMatrixMath() |
| } |
| } |
| } |