1 /* 2 * Copyright (C) 2023 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.time 18 19 import kotlin.contracts.ExperimentalContracts 20 import kotlin.contracts.InvocationKind 21 import kotlin.contracts.contract 22 23 /** 24 * Executes the given [block] and returns elapsed time using provided [systemClock] in milliseconds. 25 */ 26 @OptIn(ExperimentalContracts::class) measureTimeMillisnull27inline fun measureTimeMillis(systemClock: SystemClock, block: () -> Unit): Long { 28 contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) } 29 val start = systemClock.currentTimeMillis() 30 block() 31 return systemClock.currentTimeMillis() - start 32 } 33