1 /* 2 * Copyright (C) 2024 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 17 package com.android.systemui.util.concurrency 18 19 import android.os.Handler 20 import android.os.Looper 21 import android.view.Choreographer 22 import com.android.systemui.util.Assert 23 import java.util.concurrent.Executor 24 import java.util.concurrent.atomic.AtomicReference 25 26 private const val DEFAULT_TIMEOUT = 150L 27 28 class UiThreadContext( 29 val looper: Looper, 30 val handler: Handler, 31 val executor: Executor, 32 val choreographer: Choreographer 33 ) { isCurrentThreadnull34 fun isCurrentThread() { 35 Assert.isCurrentThread(looper) 36 } 37 runWithScissorsnull38 fun <T> runWithScissors(block: () -> T): T { 39 return handler.runWithScissors(block) 40 } 41 runWithScissorsnull42 fun runWithScissors(block: Runnable) { 43 handler.runWithScissors(block, DEFAULT_TIMEOUT) 44 } 45 } 46 runWithScissorsnull47fun <T> Handler.runWithScissors(block: () -> T): T { 48 val returnedValue = AtomicReference<T>() 49 runWithScissors({ returnedValue.set(block()) }, DEFAULT_TIMEOUT) 50 return returnedValue.get()!! 51 } 52