Merge "Use a single thread executor for calculateHasIncompatibleAccounts" into udc-dev

import static android.provider.Telephony.Carriers.ENFORCE_MANAGED_URI;

import static android.provider.Telephony.Carriers.INVALID_APN_ID;

import static android.security.keystore.AttestationUtils.USE_INDIVIDUAL_ATTESTATION;

import static com.android.internal.logging.nano.MetricsProto.MetricsEvent.PROVISIONING_ENTRY_POINT_ADB;

import static com.android.internal.widget.LockPatternUtils.CREDENTIAL_TYPE_NONE;

import static com.android.internal.widget.LockPatternUtils.StrongAuthTracker.STRONG_AUTH_REQUIRED_AFTER_DPM_LOCK_NOW;

import java.util.concurrent.CompletableFuture;

import java.util.concurrent.ExecutionException;

import java.util.concurrent.Executor;

import java.util.concurrent.LinkedBlockingQueue;

import java.util.concurrent.ThreadPoolExecutor;

import java.util.concurrent.TimeUnit;

import java.util.concurrent.TimeoutException;

import java.util.function.Consumer;

        });

    }

    ThreadPoolExecutor calculateHasIncompatibleAccountsExecutor = new ThreadPoolExecutor(

            1, 1, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>());

    @Override

    public void calculateHasIncompatibleAccounts() {

        if (calculateHasIncompatibleAccountsExecutor.getQueue().size() > 1) {

            return;

        }

        new CalculateHasIncompatibleAccountsTask().executeOnExecutor(

                AsyncTask.THREAD_POOL_EXECUTOR, null);

                calculateHasIncompatibleAccountsExecutor, null);

    }

    @Nullable