Merge "Clean up class preloading" am: 4082bc01

    private static final int LOG_BOOT_PROGRESS_PRELOAD_START = 3020;

    private static final int LOG_BOOT_PROGRESS_PRELOAD_END = 3030;

    /**

     * when preloading, GC after allocating this many bytes

     */

    private static final int PRELOAD_GC_THRESHOLD = 50000;

    private static final String ABI_LIST_ARG = "--abi-list=";

    // TODO (chriswailes): Re-name this --zygote-socket-name= and then add a

            droppedPriviliges = true;

        }

        // Alter the target heap utilization.  With explicit GCs this

        // is not likely to have any effect.

        float defaultUtilization = runtime.getTargetHeapUtilization();

        runtime.setTargetHeapUtilization(0.8f);

        try {

            BufferedReader br =

                    new BufferedReader(new InputStreamReader(is), Zygote.SOCKET_BUFFER_SIZE);

                Trace.traceBegin(Trace.TRACE_TAG_DALVIK, line);

                try {

                    if (false) {

                        Log.v(TAG, "Preloading " + line + "...");

                    }

                    // Load and explicitly initialize the given class. Use

                    // Class.forName(String, boolean, ClassLoader) to avoid repeated stack lookups

                    // (to derive the caller's class-loader). Use true to force initialization, and

            Log.e(TAG, "Error reading " + PRELOADED_CLASSES + ".", e);

        } finally {

            IoUtils.closeQuietly(is);

            // Restore default.

            runtime.setTargetHeapUtilization(defaultUtilization);

            // Fill in dex caches with classes, fields, and methods brought in by preloading.

            Trace.traceBegin(Trace.TRACE_TAG_DALVIK, "PreloadDexCaches");