Add logic for recording dex files use on disk am: 6ea5ace7 am: 34bdf168

        return new AtomicFile(fname);

    }

    void writeNow(final T data) {

    protected void writeNow(final T data) {

        writeImpl(data);

        mLastTimeWritten.set(SystemClock.elapsedRealtime());

    }

    boolean maybeWriteAsync(final T data) {

    protected boolean maybeWriteAsync(final T data) {

        if (SystemClock.elapsedRealtime() - mLastTimeWritten.get() < WRITE_INTERVAL_MS

            && !PackageManagerService.DEBUG_DEXOPT) {

            return false;

    protected abstract void writeInternal(T data);

    void read(T data) {

    protected void read(T data) {

        if (mLock) {

            synchronized (data) {

                synchronized (mFileLock) {

import android.content.Intent;

import android.content.pm.PackageParser;

import android.content.pm.ResolveInfo;

import android.os.Build;

import android.os.RemoteException;

import android.os.UserHandle;

import android.system.ErrnoException;

import android.util.ArraySet;

import android.util.Log;

import dalvik.system.VMRuntime;

import libcore.io.Libcore;

import java.io.File;

        }

        return sb.toString();

    }

    /**

     * Verifies that the given string {@code isa} is a valid supported isa on

     * the running device.

     */

    public static boolean checkISA(String isa) {

        for (String abi : Build.SUPPORTED_ABIS) {

            if (VMRuntime.getInstructionSet(abi).equals(isa)) {

                return true;

            }

        }

        return false;

    }

}