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JNI binding generator (Android runtime)
/**
* Copyright 2011 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.android.launcher;
import java.io.File;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.util.Log;
public class ClassLoaderUtil {
private static final String TAG = "JogampClassLoader";
private static HashMap cachedClassLoader = new HashMap();
// location where optimized dex files will be written
private static final String dexPathName= "jogampDex";
private static File dexPath = null;
private static LauncherTempFileCache tmpFileCache = null;
private static final String PATH_SEP = "/";
private static final String ELEM_SEP = ":";
private static synchronized void init(Context ctx) {
if(null == tmpFileCache) {
if(!LauncherTempFileCache.initSingleton(ctx)) {
throw new InternalError("TempFileCache initialization error");
}
tmpFileCache = new LauncherTempFileCache();
if(!tmpFileCache.isValid()) {
throw new InternalError("TempFileCache instantiation error");
}
dexPath = new File(tmpFileCache.getTempDir(), dexPathName);
Log.d(TAG, "jogamp dexPath: " + dexPath.getAbsolutePath());
dexPath.mkdir();
}
}
/**
* @param ctx
* @param cachedPackageName list of package names w/ native libraries for which a ClassLoader shall be cached, i.e. persistence.
* This is usually required for native libraries.
* @param userPackageNames list of user package names w/o native libraries, the last entry shall reflect the Activity.
* @param userAPKNames optional non-cached user APKs
* @return
*/
public static synchronized ClassLoader createClassLoader(Context ctx, List cachedPackageName,
List userPackageNames, List userAPKNames) {
return createClassLoader(ctx, cachedPackageName, userPackageNames, userAPKNames, null);
}
/**
* @param ctx
* @param cachedPackageNames list of package names w/ native libraries for which a ClassLoader shall be cached, i.e. persistence.
* This is usually required for native libraries.
* @param userPackageNames list of user package names w/o native libraries, the last entry shall reflect the Activity.
* @param userAPKNames optional non-cached user APKs
* @param parent
* @return
*/
public static synchronized ClassLoader createClassLoader(Context ctx, List cachedPackageNames,
List userPackageNames, List userAPKNames,
ClassLoader parent) {
init(ctx);
final String cacheKey = cachedPackageNames.toString();
ClassLoader clCached = cachedClassLoader.get(cacheKey);
if( null == clCached ) {
clCached = createClassLoaderImpl(ctx, cachedPackageNames, true, null, (null != parent ) ? parent : ctx.getClassLoader());
cachedClassLoader.put(cacheKey, clCached);
Log.d(TAG, "NEW cached-CL: cachedPackageNames: "+cacheKey);
} else {
Log.d(TAG, "REUSE cached-CL: cachedPackageNames: "+cacheKey);
}
return createClassLoaderImpl(ctx, userPackageNames, false, userAPKNames, clCached);
}
/**
* @param ctx
* @param packageNames list of package names
* @param addLibPath
* @param apkNames
* @param parent
* @return
*/
private static synchronized ClassLoader createClassLoaderImpl(Context ctx, List packageNames, boolean addLibPath,
List apkNames, ClassLoader parent) {
final ApplicationInfo appInfoLauncher= ctx.getApplicationInfo();
final String appDirLauncher = new File(appInfoLauncher.dataDir).getParent();
final String libSubDef = "lib";
Log.d(TAG, "S: userPackageNames: "+packageNames+"; Launcher: appDir "+appDirLauncher+", dataDir: "+appInfoLauncher.dataDir+", nativeLibraryDir "+appInfoLauncher.nativeLibraryDir);
final StringBuilder apks = new StringBuilder();
final StringBuilder libs = new StringBuilder();
int apkCount = 0;
String lastUserPackageName = null; // the very last one reflects the Activity
if( null != packageNames ) {
for(Iterator i=packageNames.iterator(); i.hasNext(); ) {
lastUserPackageName = i.next();
String userAPK = null;
String nativeLibraryDir=null;
try {
final PackageManager pm = ctx.getPackageManager();
final ApplicationInfo appInfo = pm.getApplicationInfo(lastUserPackageName, 0);
final String appDir = new File(appInfoLauncher.dataDir).getParent();
userAPK = appInfo.sourceDir;
nativeLibraryDir = appInfo.nativeLibraryDir;
Log.d(TAG, "S: userPackage: "+lastUserPackageName+", apk "+userAPK+", appDir "+appDir+", dataDir: "+appInfo.dataDir+", nativeLibraryDir "+nativeLibraryDir);
} catch (PackageManager.NameNotFoundException e) {
Log.d(TAG, "error: "+e, e);
}
if(null != userAPK) {
if(apkCount>0) {
apks.append(ELEM_SEP);
if(addLibPath) {
libs.append(ELEM_SEP);
}
}
apks.append(userAPK);
Log.d(TAG, "APK["+apkCount+"] found: <"+lastUserPackageName+"> -> <"+userAPK+">");
Log.d(TAG, "APK["+apkCount+"] apks: <"+apks.toString()+">");
if(addLibPath) {
if(null != nativeLibraryDir && nativeLibraryDir.length()>0 ) {
libs.append(nativeLibraryDir).append(PATH_SEP);
} else {
libs.append(appDirLauncher).append(PATH_SEP).append(lastUserPackageName).append(PATH_SEP).append(libSubDef).append(PATH_SEP);
}
Log.d(TAG, "APK["+apkCount+"] libs: <"+libs.toString()+">");
}
apkCount++;
} else {
Log.d(TAG, "APK not found: <"+lastUserPackageName+">");
}
}
if( packageNames.size() != apkCount ) {
Log.d(TAG, "User APKs incomplete, abort (1)");
return null;
}
}
final int userAPKCount = apkCount;
if( null != apkNames ) {
for(Iterator i=apkNames.iterator(); i.hasNext(); ) {
String userAPK = i.next();
if(apkCount>0) {
apks.append(ELEM_SEP);
}
apks.append(userAPK);
Log.d(TAG, "APK added: <"+userAPK+">");
apkCount++;
}
if( apkNames.size() != apkCount - userAPKCount ) {
Log.d(TAG, "Framework APKs incomplete, abort (2)");
return null;
}
}
// return new TraceDexClassLoader(apks.toString(), dexPath.getAbsolutePath(), libs.toString(), parent);
return new AssetDexClassLoader(apks.toString(), dexPath.getAbsolutePath(), libs.toString(), parent);
}
/***
*
public boolean setAPKClassLoader(String activityPackageName, ClassLoader classLoader)
{
try {
Field mMainThread = getField(Activity.class, "mMainThread");
Object mainThread = mMainThread.get(this);
Class threadClass = mainThread.getClass();
Field mPackages = getField(threadClass, "mPackages");
@SuppressWarnings("unchecked")
HashMap map = (HashMap) mPackages.get(mainThread);
WeakReference ref = (WeakReference) map.get(activityPackageName);
Object apk = ref.get();
Class apkClass = apk.getClass();
Field mClassLoader = getField(apkClass, "mClassLoader");
mClassLoader.set(apk, classLoader);
Log.d(TAG, "setAPKClassLoader: OK");
return true;
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
Log.d(TAG, "setAPKClassLoader: FAILED");
return false;
}
private Field getField(Class cls, String name)
{
for (Field field: cls.getDeclaredFields())
{
if (!field.isAccessible()) {
field.setAccessible(true);
}
if (field.getName().equals(name)) {
return field;
}
}
return null;
}
*/
}