Heavy_weight Process

    /**
     * Value for {@link #privateFlags}: set to true if the application
     * has reported that it is heavy-weight, and thus can not participate in
     * the normal application lifecycle.
     *
     * 
Comes from the
     * android.R.styleable#AndroidManifestApplication_cantSaveState
     * attribute of the <application> tag.
     *
     * {@hide}
     */
    public static final int PRIVATE_FLAG_CANT_SAVE_STATE = 1<<1;

if ((app.info.privateFlags & ApplicationInfo.PRIVATE_FLAG_CANT_SAVE_STATE) != 0
                        && mService.mHasHeavyWeightFeature) {
                    // This may be a heavy-weight process!  Note that the package
                    // manager will ensure that only activity can run in the main
                    // process of the .apk, which is the only thing that will be
                    // considered heavy-weight.
                    if (app.processName.equals(app.info.packageName)) {
                        if (mService.mHeavyWeightProcess != null
                                && mService.mHeavyWeightProcess != app) {
                            Slog.w(TAG, "Starting new heavy weight process " + app
                                    + " when already running "
                                    + mService.mHeavyWeightProcess);
                        }
                        mService.mHeavyWeightProcess = app;
                        Message msg = mService.mHandler.obtainMessage(
                                ActivityManagerService.POST_HEAVY_NOTIFICATION_MSG);
                        msg.obj = r;
                        mService.mHandler.sendMessage(msg);
                    }
                }