Merge "Remove dead code from the Zygote initialization."

import dalvik.system.VMRuntime;

import dalvik.system.Zygote;

import dalvik.system.SamplingProfiler;

import java.io.BufferedReader;

import java.io.FileDescriptor;

    /** Controls whether we should preload resources during zygote init. */

    private static final boolean PRELOAD_RESOURCES = true;

    /**

     * List of methods we "warm up" in the register map cache.  These were

     * chosen because they appeared on the stack in GCs in multiple

     * applications.

     *

     * This is in a VM-ready format, to minimize string processing.  If a

     * class is not already loaded, or a method is not found, the entry

     * will be skipped.

     *

     * This doesn't really merit a separately-generated input file at this

     * time.  The list is fairly short, and the consequences of failure

     * are minor.

     */

    private static final String[] REGISTER_MAP_METHODS = {

        // (currently not doing any)

        //"Landroid/app/Activity;.setContentView:(I)V",

    };

    /**

     * Invokes a static "main(argv[]) method on class "className".

     * Converts various failing exceptions into RuntimeExceptions, with

        }

    }

    /**

     * Pre-caches register maps for methods that are commonly used.

     */

    private static void cacheRegisterMaps() {

        String failed = null;

        int failure;

        long startTime = System.nanoTime();

        failure = 0;

        for (int i = 0; i < REGISTER_MAP_METHODS.length; i++) {

            String str = REGISTER_MAP_METHODS[i];

            if (!Debug.cacheRegisterMap(str)) {

                if (failed == null)

                    failed = str;

                failure++;

            }

        }

        long delta = System.nanoTime() - startTime;

        if (failure == REGISTER_MAP_METHODS.length) {

            if (REGISTER_MAP_METHODS.length > 0) {

                Log.i(TAG,

                    "Register map caching failed (precise GC not enabled?)");

            }

            return;

        }

        Log.i(TAG, "Register map cache: found " +

            (REGISTER_MAP_METHODS.length - failure) + " of " +

            REGISTER_MAP_METHODS.length + " methods in " +

            (delta / 1000000L) + "ms");

        if (failure > 0) {

            Log.i(TAG, "  First failure: " + failed);

        }

    }

    /**

     * Load in commonly used resources, so they can be shared across

     * processes.

            EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_START,

                SystemClock.uptimeMillis());

            preloadClasses();

            //cacheRegisterMaps();

            preloadResources();

            EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_END,

                SystemClock.uptimeMillis());