litho-rendercore/src/main/java/com/facebook/rendercore/utils/ThreadUtils.java [119:138]:
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  public static int tryRaiseThreadPriority(int threadId, int targetThreadPriority) {
    // Main thread is about to be blocked, raise the running thread priority.
    final int originalThreadPriority = Process.getThreadPriority(threadId);
    boolean success = false;
    while (!success && targetThreadPriority < originalThreadPriority) {
      // Keep trying to increase thread priority of running thread as long as it is an increase.
      try {
        Process.setThreadPriority(threadId, targetThreadPriority);
        success = true;
      } catch (SecurityException e) {
        /*
         From {@link Process#THREAD_PRIORITY_DISPLAY}, some applications can not change
         the thread priority to that of the main thread. This catches that potential error
         and tries to set a lower priority.
        */
        targetThreadPriority += Process.THREAD_PRIORITY_LESS_FAVORABLE;
      }
    }
    return originalThreadPriority;
  }
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litho-core/src/main/java/com/facebook/litho/ThreadUtils.java [104:123]:
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  public static int tryRaiseThreadPriority(int threadId, int targetThreadPriority) {
    // Main thread is about to be blocked, raise the running thread priority.
    final int originalThreadPriority = Process.getThreadPriority(threadId);
    boolean success = false;
    while (!success && targetThreadPriority < originalThreadPriority) {
      // Keep trying to increase thread priority of running thread as long as it is an increase.
      try {
        Process.setThreadPriority(threadId, targetThreadPriority);
        success = true;
      } catch (SecurityException e) {
        /*
         From {@link Process#THREAD_PRIORITY_DISPLAY}, some applications can not change
         the thread priority to that of the main thread. This catches that potential error
         and tries to set a lower priority.
        */
        targetThreadPriority += Process.THREAD_PRIORITY_LESS_FAVORABLE;
      }
    }
    return originalThreadPriority;
  }
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