diff options
Diffstat (limited to 'common/framework/com/android/net/module/util/BinderUtils.java')
-rw-r--r-- | common/framework/com/android/net/module/util/BinderUtils.java | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/common/framework/com/android/net/module/util/BinderUtils.java b/common/framework/com/android/net/module/util/BinderUtils.java deleted file mode 100644 index e4d14ea8..00000000 --- a/common/framework/com/android/net/module/util/BinderUtils.java +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright (C) 2021 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.net.module.util; - -import android.annotation.NonNull; -import android.os.Binder; - -import java.util.function.Supplier; - -/** - * Collection of utilities for {@link Binder} and related classes. - * @hide - */ -public class BinderUtils { - /** - * Convenience method for running the provided action enclosed in - * {@link Binder#clearCallingIdentity}/{@link Binder#restoreCallingIdentity} - * - * Any exception thrown by the given action will be caught and rethrown after the call to - * {@link Binder#restoreCallingIdentity} - * - * Note that this is copied from Binder#withCleanCallingIdentity with minor changes - * since it is not public. - * - * @hide - */ - public static final <T extends Exception> void withCleanCallingIdentity( - @NonNull ThrowingRunnable<T> action) throws T { - final long callingIdentity = Binder.clearCallingIdentity(); - try { - action.run(); - } finally { - Binder.restoreCallingIdentity(callingIdentity); - } - } - - /** - * Like a Runnable, but declared to throw an exception. - * - * @param <T> The exception class which is declared to be thrown. - */ - @FunctionalInterface - public interface ThrowingRunnable<T extends Exception> { - /** @see java.lang.Runnable */ - void run() throws T; - } - - /** - * Convenience method for running the provided action enclosed in - * {@link Binder#clearCallingIdentity}/{@link Binder#restoreCallingIdentity} returning the - * result. - * - * <p>Any exception thrown by the given action will be caught and rethrown after - * the call to {@link Binder#restoreCallingIdentity}. - * - * Note that this is copied from Binder#withCleanCallingIdentity with minor changes - * since it is not public. - * - * @hide - */ - public static final <T, E extends Exception> T withCleanCallingIdentity( - @NonNull ThrowingSupplier<T, E> action) throws E { - final long callingIdentity = Binder.clearCallingIdentity(); - try { - return action.get(); - } finally { - Binder.restoreCallingIdentity(callingIdentity); - } - } - - /** - * An equivalent of {@link Supplier} - * - * @param <T> The class which is declared to be returned. - * @param <E> The exception class which is declared to be thrown. - */ - @FunctionalInterface - public interface ThrowingSupplier<T, E extends Exception> { - /** @see java.util.function.Supplier */ - T get() throws E; - } -} |