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Remove org.mozilla.gecko.util.ThreadUtils usage (#3076)
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82 changes: 82 additions & 0 deletions
82
app/src/common/shared/org/mozilla/vrbrowser/utils/ThreadUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package org.mozilla.vrbrowser.utils; | ||
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| import android.os.Handler; | ||
| import android.os.Looper; | ||
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| public class ThreadUtils extends Thread { | ||
| private static final Handler sUiHandler = new Handler(Looper.getMainLooper()); | ||
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| private static final String LOOPER_NAME = "VRBBackgroundThread"; | ||
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| // Guarded by 'ThreadUtils.class'. | ||
| private static Handler mBackgroundHandler; | ||
| private static Thread mBackgroundThread; | ||
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| // The initial Runnable to run on the new mBackgroundThread. Its purpose | ||
| // is to avoid us having to wait for the new mBackgroundThread to start. | ||
| private Runnable mInitialRunnable; | ||
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| // Singleton, so private constructor. | ||
| private ThreadUtils(final Runnable initialRunnable) { | ||
| mInitialRunnable = initialRunnable; | ||
| } | ||
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| @Override | ||
| public void run() { | ||
| setName(LOOPER_NAME); | ||
| Looper.prepare(); | ||
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| synchronized (ThreadUtils.class) { | ||
| mBackgroundHandler = new Handler(); | ||
| ThreadUtils.class.notifyAll(); | ||
| } | ||
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| if (mInitialRunnable != null) { | ||
| mInitialRunnable.run(); | ||
| mInitialRunnable = null; | ||
| } | ||
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| Looper.loop(); | ||
| } | ||
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| private static void startThread(final Runnable initialRunnable) { | ||
| mBackgroundThread = new ThreadUtils(initialRunnable); | ||
| mBackgroundThread.setDaemon(true); | ||
| mBackgroundThread.start(); | ||
| } | ||
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| // Get a Handler for a looper mBackgroundThread, or create one if it doesn't yet exist. | ||
| /*package*/ static synchronized Handler getHandler() { | ||
| if (mBackgroundThread == null) { | ||
| startThread(null); | ||
| } | ||
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| while (mBackgroundHandler == null) { | ||
| try { | ||
| ThreadUtils.class.wait(); | ||
| } catch (final InterruptedException e) { | ||
| } | ||
| } | ||
| return mBackgroundHandler; | ||
| } | ||
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| public static synchronized void postToBackgroundThread(final Runnable runnable) { | ||
| if (mBackgroundThread == null) { | ||
| startThread(runnable); | ||
| return; | ||
| } | ||
| getHandler().post(runnable); | ||
| } | ||
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| public static void postToUiThread(final Runnable runnable) { | ||
| sUiHandler.post(runnable); | ||
| } | ||
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| public static void postDelayedToUiThread(final Runnable runnable, final long timeout) { | ||
| sUiHandler.postDelayed(runnable, timeout); | ||
| } | ||
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| public static void removeCallbacksFromUiThread(final Runnable runnable) { | ||
| sUiHandler.removeCallbacks(runnable); | ||
| } | ||
| } |
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