/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.util;
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import android.os.Looper;
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import com.android.launcher3.LauncherModel;
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import com.android.launcher3.config.FeatureFlags;
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/**
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* A set of utility methods for thread verification.
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*/
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public class Preconditions {
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public static void assertNotNull(Object o) {
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if (FeatureFlags.IS_DOGFOOD_BUILD && o == null) {
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throw new IllegalStateException();
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}
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}
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public static void assertWorkerThread() {
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if (FeatureFlags.IS_DOGFOOD_BUILD && !isSameLooper(LauncherModel.getWorkerLooper())) {
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throw new IllegalStateException();
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}
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}
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public static void assertUIThread() {
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if (FeatureFlags.IS_DOGFOOD_BUILD && !isSameLooper(Looper.getMainLooper())) {
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throw new IllegalStateException();
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}
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}
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public static void assertNonUiThread() {
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if (FeatureFlags.IS_DOGFOOD_BUILD && isSameLooper(Looper.getMainLooper())) {
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throw new IllegalStateException();
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}
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}
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private static boolean isSameLooper(Looper looper) {
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return Looper.myLooper() == looper;
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}
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}
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