Merge "ZygoteInit: warm up JCA providers during preload" into nyc-dev (a9f804bf) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/os/ZygoteInit.java

+21 −0

Original line number	Diff line number	Diff line
		@@ -56,6 +56,8 @@ import java.io.InputStream;
		import java.io.InputStreamReader;
		import java.lang.reflect.InvocationTargetException;
		import java.lang.reflect.Method;
		import java.security.Security;
		import java.security.Provider;
		import java.util.ArrayList;

		/**
		@@ -198,6 +200,7 @@ public class ZygoteInit {
		// Ask the WebViewFactory to do any initialization that must run in the zygote process,
		// for memory sharing purposes.
		WebViewFactory.prepareWebViewInZygote();
		warmUpJcaProviders();
		Log.d(TAG, "end preload");
		}

		@@ -219,6 +222,24 @@ public class ZygoteInit {
		TextView.preloadFontCache();
		}

		/**
		* Warm up the providers that are already registered.
		*
		* By doing it here we avoid that each app does it when requesting a service from the
		* provider for the first time.
		*/
		private static void warmUpJcaProviders() {
		long startTime = SystemClock.uptimeMillis();
		Trace.traceBegin(
		Trace.TRACE_TAG_DALVIK, "Starting warm up of JCA providers");
		for (Provider p : Security.getProviders()) {
		p.warmUpServiceProvision();
		}
		Log.i(TAG, "Warmed up JCA providers in "
		+ (SystemClock.uptimeMillis()-startTime) + "ms.");
		Trace.traceEnd(Trace.TRACE_TAG_DALVIK);
		}

		/**
		* Performs Zygote process initialization. Loads and initializes
		* commonly used classes.