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/*
* Copyright (C) 2017 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
*
* http://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 com.android.dialer.strictmode;
import android.os.Looper;
import android.os.StrictMode;
import android.os.StrictMode.ThreadPolicy;
import android.support.annotation.AnyThread;
import com.android.dialer.buildtype.BuildType;
import com.android.dialer.function.Supplier;
/** Utilities for enforcing strict-mode in an app. */
public final class StrictModeUtils {
private static final ThreadPolicy THREAD_NO_PENALTY =
new StrictMode.ThreadPolicy.Builder().permitAll().build();
/**
* Convenience method for disabling and enabling the thread policy death penalty using lambdas.
*
* <p>For example:
*
* <p><code>
* Value foo = StrictModeUtils.bypass(() -> doDiskAccessOnMainThreadReturningValue());
* </code>
*
* <p>The thread policy is only mutated if this is called from the main thread.
*/
@AnyThread
public static <T> T bypass(Supplier<T> supplier) {
if (isStrictModeAllowed() && onMainThread()) {
ThreadPolicy originalPolicy = StrictMode.getThreadPolicy();
StrictMode.setThreadPolicy(THREAD_NO_PENALTY);
try {
return supplier.get();
} finally {
StrictMode.setThreadPolicy(originalPolicy);
}
}
return supplier.get();
}
/**
* Convenience method for disabling and enabling the thread policy death penalty using lambdas.
*
* <p>For example:
*
* <p><code>
* StrictModeUtils.bypass(() -> doDiskAccessOnMainThread());
* </code>
*
* <p>The thread policy is only mutated if this is called from the main thread.
*/
@AnyThread
public static void bypass(Runnable runnable) {
if (isStrictModeAllowed() && onMainThread()) {
ThreadPolicy originalPolicy = StrictMode.getThreadPolicy();
StrictMode.setThreadPolicy(THREAD_NO_PENALTY);
try {
runnable.run();
} finally {
StrictMode.setThreadPolicy(originalPolicy);
}
} else {
runnable.run();
}
}
public static boolean isStrictModeAllowed() {
return BuildType.get() == BuildType.BUGFOOD;
}
private static boolean onMainThread() {
return Looper.getMainLooper().equals(Looper.myLooper());
}
private StrictModeUtils() {}
}
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