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48 lines
1.2 KiB
48 lines
1.2 KiB
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import android.os.Binder;
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import android.os.RemoteException;
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import java.util.concurrent.Executor;
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class DirectStarvation {
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static Binder binder;
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// executors are injected and annotated as to what thread they schedule to
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@ForUiThread private final Executor mUiThreadExecutor = null;
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@ForNonUiThread private final Executor mNonUiThreadExecutor = null;
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// call which should not happen on UI thread
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private static void doTransact() {
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try {
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binder.transact(0, null, null, 0);
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} catch (RemoteException e) {
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}
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}
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// starvation via scheduling a transaction on UI thread
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public void postBlockingCallToUIThreadBad() {
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mUiThreadExecutor.execute(
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new Runnable() {
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@Override
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public void run() {
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doTransact();
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}
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});
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}
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public void postBlockingCallToNonUIThreadOk() {
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mNonUiThreadExecutor.execute(
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new Runnable() {
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@Override
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public void run() {
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doTransact();
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}
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});
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}
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}
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