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Allow SDL to use ReLinker if present.

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This fixes issues for applications that have a large number of shared libraries
For more information, see https://github.com/KeepSafe/ReLinker for ReLinker's repository.
This commit is contained in:
Sam Lantinga 2018-10-04 16:29:17 -07:00
parent 41ee51b9a8
commit a0c53668e6
4 changed files with 52 additions and 5 deletions
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2
android-project/app/src/main/java/org/libsdl/app/HIDDeviceManager.java
View file

@ -82,7 +82,7 @@ public class HIDDeviceManager {
// Make sure we have the HIDAPI library loaded with the native functions
try {
System.loadLibrary("hidapi");
SDL.loadLibrary("hidapi");
} catch (Exception e) {
Log.w(TAG, "Couldn't load hidapi: " + e.toString());
return;

47
android-project/app/src/main/java/org/libsdl/app/SDL.java
View file

@ -2,6 +2,8 @@ package org.libsdl.app;
import android.content.Context;
import java.lang.reflect.*;
/**
SDL library initialization
*/
@ -33,5 +35,50 @@ public class SDL {
return mContext;
}
public static void loadLibrary(String libraryName) throws UnsatisfiedLinkError, SecurityException, NullPointerException {
if (libraryName == null) {
throw new NullPointerException("No library name provided.");
}
try {
// Let's see if we have ReLinker available in the project. This is necessary for
// some projects that have huge numbers of local libraries bundled, and thus may
// trip a bug in Android's native library loader which ReLinker works around. (If
// loadLibrary works properly, ReLinker will simply use the normal Android method
// internally.)
//
// To use ReLinker, just add it as a dependency. For more information, see
// https://github.com/KeepSafe/ReLinker for ReLinker's repository.
//
Class relinkClass = mContext.getClassLoader().loadClass("com.getkeepsafe.relinker.ReLinker");
Class relinkListenerClass = mContext.getClassLoader().loadClass("com.getkeepsafe.relinker.ReLinker$LoadListener");
Class contextClass = mContext.getClassLoader().loadClass("android.content.Context");
Class stringClass = mContext.getClassLoader().loadClass("java.lang.String");
// Get a 'force' instance of the ReLinker, so we can ensure libraries are reinstalled if
// they've changed during updates.
Method forceMethod = relinkClass.getDeclaredMethod("force");
Object relinkInstance = forceMethod.invoke(null);
Class relinkInstanceClass = relinkInstance.getClass();
// Actually load the library!
Method loadMethod = relinkInstanceClass.getDeclaredMethod("loadLibrary", contextClass, stringClass, stringClass, relinkListenerClass);
loadMethod.invoke(relinkInstance, mContext, libraryName, null, null);
}
catch (final Exception e) {
// Fall back
try {
System.loadLibrary(libraryName);
}
catch (final UnsatisfiedLinkError ule) {
throw ule;
}
catch (final SecurityException se) {
throw se;
}
}
}
protected static Context mContext;
}

2
android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
View file

@ -154,7 +154,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
// Load the .so
public void loadLibraries() {
for (String lib : getLibraries()) {
System.loadLibrary(lib);
SDL.loadLibrary(lib);
}
}