Merge "Refactored UserManagerService to use NamedLock." into main

import com.android.internal.os.RoSystemProperties;

import com.android.internal.util.DumpUtils;

import com.android.internal.util.FrameworkStatsLog;

import com.android.internal.util.NamedLock;

import com.android.internal.util.Preconditions;

import com.android.internal.util.XmlUtils;

import com.android.internal.widget.LockPatternUtils;

     * with {@link #mPackagesLock}, {@link #mPackagesLock} should be acquired first.

     */

    private final Object mUsersLock = LockGuard.installNewLock(LockGuard.INDEX_USER);

    private final Object mRestrictionsLock = new Object();

    private final Object mRestrictionsLock = NamedLock.create("mRestrictionsLock");

    // Used for serializing access to app restriction files

    private final Object mAppRestrictionsLock = new Object();

    private final Object mAppRestrictionsLock = NamedLock.create("mAppRestrictionsLock");

    private final Handler mHandler;

    private final MultiuserDeprecationReporter mDeprecationReporter;

    @VisibleForTesting

    UserManagerService(Context context) {

        this(context, /* pm= */ null, /* userDataPreparer= */ null, new UserJourneyLogger(),

                /* packagesLock= */ new Object(), context.getCacheDir(), /* users= */ null);

                NamedLock.create("mPackagesLock"), context.getCacheDir(), /* users= */ null);

    }

    /**

    }

    /**

     * This method is used to invalidate the caches at server statup,

     * This method is used to invalidate the caches at server startup,

     * so that caches can start working.

     */

    private static final void initPropertyInvalidatedCaches() {