Setup Baseline Profile (#8135)

* Setup Baseline Profile

Adds Baseline Profile generator and startup time test.
Readme included in macrobenchmark module to run the generator.

* changes

macrobenchmark/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" />

macrobenchmark/src/main/java/tachiyomi/macrobenchmark/BaselineProfileGenerator.kt

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+package tachiyomi.macrobenchmark
+
+import androidx.benchmark.macro.ExperimentalBaselineProfilesApi
+import androidx.benchmark.macro.junit4.BaselineProfileRule
+import org.junit.Rule
+import org.junit.Test
+
+@OptIn(ExperimentalBaselineProfilesApi::class)
+class BaselineProfileGenerator {
+    @get:Rule
+    val baselineProfileRule = BaselineProfileRule()
+
+    @Test
+    fun generate() = baselineProfileRule.collectBaselineProfile(
+        packageName = "eu.kanade.tachiyomi.benchmark",
+        profileBlock = {
+            pressHome()
+            startActivityAndWait()
+
+            // TODO: Navigate to browse-extensions screen when storage permission
+            // in sources screen moved. Possibly open manga details screen too?
+        }
+    )
+}

macrobenchmark/src/main/java/tachiyomi/macrobenchmark/StartupBenchmark.kt

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+/*
+ * Copyright 2022 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
+ *
+ *     https://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 tachiyomi.macrobenchmark
+
+import androidx.benchmark.macro.BaselineProfileMode
+import androidx.benchmark.macro.CompilationMode
+import androidx.benchmark.macro.StartupMode
+import androidx.benchmark.macro.StartupTimingMetric
+import androidx.benchmark.macro.junit4.MacrobenchmarkRule
+import androidx.test.internal.runner.junit4.AndroidJUnit4ClassRunner
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Run this benchmark from Studio to see startup measurements, and captured system traces
+ * for investigating your app's performance from a cold state.
+ */
+@RunWith(AndroidJUnit4ClassRunner::class)
+class ColdStartupBenchmark : AbstractStartupBenchmark(StartupMode.COLD)
+
+/**
+ * Run this benchmark from Studio to see startup measurements, and captured system traces
+ * for investigating your app's performance from a warm state.
+ */
+@RunWith(AndroidJUnit4ClassRunner::class)
+class WarmStartupBenchmark : AbstractStartupBenchmark(StartupMode.WARM)
+
+/**
+ * Run this benchmark from Studio to see startup measurements, and captured system traces
+ * for investigating your app's performance from a hot state.
+ */
+@RunWith(AndroidJUnit4ClassRunner::class)
+class HotStartupBenchmark : AbstractStartupBenchmark(StartupMode.HOT)
+
+/**
+ * Base class for benchmarks with different startup modes.
+ * Enables app startups from various states of baseline profile or [CompilationMode]s.
+ */
+abstract class AbstractStartupBenchmark(private val startupMode: StartupMode) {
+    @get:Rule
+    val benchmarkRule = MacrobenchmarkRule()
+
+    @Test
+    fun startupNoCompilation() = startup(CompilationMode.None())
+
+    @Test
+    fun startupBaselineProfileDisabled() = startup(
+        CompilationMode.Partial(baselineProfileMode = BaselineProfileMode.Disable, warmupIterations = 1)
+    )
+
+    @Test
+    fun startupBaselineProfile() = startup(CompilationMode.Partial(baselineProfileMode = BaselineProfileMode.Require))
+
+    @Test
+    fun startupFullCompilation() = startup(CompilationMode.Full())
+
+    private fun startup(compilationMode: CompilationMode) = benchmarkRule.measureRepeated(
+        packageName = "eu.kanade.tachiyomi.benchmark",
+        metrics = listOf(StartupTimingMetric()),
+        compilationMode = compilationMode,
+        iterations = 10,
+        startupMode = startupMode,
+        setupBlock = {
+            pressHome()
+        }
+    ) {
+        startActivityAndWait()
+    }
+}