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Commit 2c02c263 authored by Narayan Kamath's avatar Narayan Kamath Committed by android-build-merger
Browse files

Merge "Zygote: Fix race condition on package preloads." into oc-dr1-dev 

am: 84e0f453

Change-Id: I17a572fa28c1371ef51753ff236f569a018df063
parents 8e866fb6 84e0f453

core/java/android/os/ZygoteProcess.java

+4 −2
Original line number Diff line number Diff line
@@ -488,7 +488,7 @@ public class ZygoteProcess { 
     * Instructs the zygote to pre-load the classes and native libraries at the given paths

     * for the specified abi. Not all zygotes support this function.

     */

    public void preloadPackageForAbi(String packagePath, String libsPath, String cacheKey,

    public boolean preloadPackageForAbi(String packagePath, String libsPath, String cacheKey,

                                        String abi) throws ZygoteStartFailedEx, IOException {

        synchronized(mLock) {

            ZygoteState state = openZygoteSocketIfNeeded(abi);
@@ -508,6 +508,8 @@ public class ZygoteProcess { 
            state.writer.newLine();



            state.writer.flush();



            return (state.inputStream.readInt() == 0);

        }

    }

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

+13 −1
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ import android.util.Log; 
import android.webkit.WebViewFactory;

import android.webkit.WebViewFactoryProvider;



import java.io.DataOutputStream;

import java.io.File;

import java.io.IOException;

import java.lang.reflect.InvocationTargetException;
@@ -87,17 +88,28 @@ class WebViewZygoteInit { 
            // Once we have the classloader, look up the WebViewFactoryProvider implementation and

            // call preloadInZygote() on it to give it the opportunity to preload the native library

            // and perform any other initialisation work that should be shared among the children.

            boolean preloadSucceeded = false;

            try {

                Class<WebViewFactoryProvider> providerClass =

                        WebViewFactory.getWebViewProviderClass(loader);

                Object result = providerClass.getMethod("preloadInZygote").invoke(null);

                if (!((Boolean)result).booleanValue()) {

                preloadSucceeded = ((Boolean) result).booleanValue();

                if (!preloadSucceeded) {

                    Log.e(TAG, "preloadInZygote returned false");

                }

            } catch (ClassNotFoundException | NoSuchMethodException | SecurityException |

                     IllegalAccessException | InvocationTargetException e) {

                Log.e(TAG, "Exception while preloading package", e);

            }



            try {

                DataOutputStream socketOut = getSocketOutputStream();

                socketOut.writeInt(preloadSucceeded ? 1 : 0);

            } catch (IOException ioe) {

                Log.e(TAG, "Error writing to command socket", ioe);

                return true;

            }



            Log.i(TAG, "Package preload done");

            return false;

        }

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

+4 −0
Original line number Diff line number Diff line
@@ -314,6 +314,10 @@ class ZygoteConnection { 
        return ZygoteInit.isPreloadComplete();

    }



    protected DataOutputStream getSocketOutputStream() {

        return mSocketOutStream;

    }



    protected boolean handlePreloadPackage(String packagePath, String libsPath, String cacheKey) {

        throw new RuntimeException("Zyogte does not support package preloading");

    }