sync_lock.java

  public void BackgroundThreadExecutionMethod() {
    synchronized (mPauseWorkLock) {
        while (mPauseWork) {
            try {
            	mPauseWorkLock.wait();
            } catch (InterruptedException e) {}
        }
    }
  }

  public void setPauseWork(boolean pauseWork) {
    synchronized (mPauseWorkLock) {
      mPauseWork = pauseWork;
        if (!mPauseWork) {
          mPauseWorkLock.notifyAll();
        }
    }
  }