Merge "Tweak AsyncTask#THREAD_POOL_EXECUTOR settings"

    private static final String LOG_TAG = "AsyncTask";

    private static final int CPU_COUNT = Runtime.getRuntime().availableProcessors();

    private static final int CORE_POOL_SIZE = CPU_COUNT + 1;

    // We want at least 2 threads and at most 4 threads in the core pool,

    // preferring to have 1 less than the CPU count to avoid saturating

    // the CPU with background work

    private static final int CORE_POOL_SIZE = Math.max(2, Math.min(CPU_COUNT - 1, 4));

    private static final int MAXIMUM_POOL_SIZE = CPU_COUNT * 2 + 1;

    private static final int KEEP_ALIVE = 1;

    private static final int KEEP_ALIVE_SECONDS = 30;

    private static final ThreadFactory sThreadFactory = new ThreadFactory() {

        private final AtomicInteger mCount = new AtomicInteger(1);

    /**

     * An {@link Executor} that can be used to execute tasks in parallel.

     */

    public static final Executor THREAD_POOL_EXECUTOR

            = new ThreadPoolExecutor(CORE_POOL_SIZE, MAXIMUM_POOL_SIZE, KEEP_ALIVE,

                    TimeUnit.SECONDS, sPoolWorkQueue, sThreadFactory);

    public static final Executor THREAD_POOL_EXECUTOR;

    static {

        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(

                CORE_POOL_SIZE, MAXIMUM_POOL_SIZE, KEEP_ALIVE_SECONDS, TimeUnit.SECONDS,

                sPoolWorkQueue, sThreadFactory);

        threadPoolExecutor.allowCoreThreadTimeOut(true);

        THREAD_POOL_EXECUTOR = threadPoolExecutor;

    }

    /**

     * An {@link Executor} that executes tasks one at a time in serial