Chris Craik | 58427a6 | 2016-09-06 11:06:44 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package com.android.test.uibench; |
| 17 | |
| 18 | import android.content.Context; |
| 19 | import android.os.Trace; |
Aurimas Liutikas | 1d6c6da | 2018-04-03 17:08:29 -0700 | [diff] [blame] | 20 | import androidx.recyclerview.widget.GridLayoutManager; |
| 21 | import androidx.recyclerview.widget.RecyclerView; |
Chris Craik | 58427a6 | 2016-09-06 11:06:44 -0700 | [diff] [blame] | 22 | import com.android.test.uibench.recyclerview.RvBoxAdapter; |
| 23 | import com.android.test.uibench.recyclerview.RvCompatListActivity; |
| 24 | |
| 25 | import java.util.concurrent.TimeUnit; |
| 26 | |
| 27 | public class SlowBindRecyclerViewActivity extends RvCompatListActivity { |
| 28 | /** |
| 29 | * Spin wait. Used instead of sleeping so a core is used up for the duration, and so |
| 30 | * traces/sampled profiling show the sections as expensive, and not just a scheduling mistake. |
| 31 | */ |
| 32 | private static void spinWaitMs(long ms) { |
| 33 | long start = System.nanoTime(); |
| 34 | while (System.nanoTime() - start < TimeUnit.MILLISECONDS.toNanos(ms)); |
| 35 | } |
| 36 | |
| 37 | @Override |
| 38 | protected RecyclerView.LayoutManager createLayoutManager(Context context) { |
| 39 | return new GridLayoutManager(context, 3); |
| 40 | } |
| 41 | |
| 42 | @Override |
| 43 | protected RecyclerView.Adapter createAdapter() { |
| 44 | return new RvBoxAdapter(this, TextUtils.buildSimpleStringList()) { |
| 45 | @Override |
| 46 | public void onBindViewHolder(ViewHolder holder, int position) { |
| 47 | Trace.beginSection("bind item " + position); |
| 48 | |
| 49 | spinWaitMs(3); |
| 50 | super.onBindViewHolder(holder, position); |
| 51 | Trace.endSection(); |
| 52 | } |
| 53 | }; |
| 54 | } |
| 55 | } |