Added logging of unhandled exception from java code

src/android/app/src/main/cpp/CMakeLists.txt

@@ -11,6 +11,7 @@ add_library(CemuAndroid SHARED
         NativeGraphicPacks.cpp
         NativeInput.cpp
         NativeLib.cpp
+        NativeLogging.cpp
         NativeSettings.cpp
         NativeSwkbd.cpp
 )

src/android/app/src/main/cpp/NativeLogging.cpp

@@ -0,0 +1,17 @@
+#include "Common/ExceptionHandler/ExceptionHandler.h"
+#include "JNIUtils.h"
+
+extern "C" [[maybe_unused]] JNIEXPORT void JNICALL
+Java_info_cemu_Cemu_nativeinterface_NativeLogging_log(JNIEnv* env, [[maybe_unused]] jclass clazz, jstring message)
+{
+	cemuLog_log(LogType::Force, JNIUtils::JStringToString(env, message));
+}
+
+extern "C" [[maybe_unused]] JNIEXPORT void JNICALL
+Java_info_cemu_Cemu_nativeinterface_NativeLogging_crashLog(JNIEnv* env, [[maybe_unused]] jclass clazz, jstring stacktrace)
+{
+	if (!CrashLog_Create())
+		return; // give up if crashlog was already created
+	CrashLog_WriteLine("Unhandled exception from java code");
+	CrashLog_WriteLine(JNIUtils::JStringToString(env, stacktrace));
+}

src/android/app/src/main/java/info/cemu/Cemu/CemuApplication.java

@@ -4,9 +4,12 @@ import android.app.Application;
 import android.util.DisplayMetrics;
 
 import java.io.File;
+import java.io.PrintWriter;
+import java.io.StringWriter;
 
 import info.cemu.Cemu.nativeinterface.NativeEmulation;
 import info.cemu.Cemu.nativeinterface.NativeGraphicPacks;
+import info.cemu.Cemu.nativeinterface.NativeLogging;
 import info.cemu.Cemu.nativeinterface.NativeSwkbd;
 
 public class CemuApplication extends Application {
@@ -14,6 +17,7 @@ public class CemuApplication extends Application {
         System.loadLibrary("CemuAndroid");
     }
 
+    private static Thread.UncaughtExceptionHandler defaultUncaughtExceptionHandler;
     private static CemuApplication application;
 
     public CemuApplication() {
@@ -35,6 +39,17 @@ public class CemuApplication extends Application {
     @Override
     public void onCreate() {
         super.onCreate();
+        if (defaultUncaughtExceptionHandler == null) {
+            defaultUncaughtExceptionHandler = Thread.getDefaultUncaughtExceptionHandler();
+        }
+        Thread.setDefaultUncaughtExceptionHandler((thread, exception) -> {
+            StringWriter stringWriter = new StringWriter();
+            PrintWriter printWriter = new PrintWriter(stringWriter);
+            exception.printStackTrace(printWriter);
+            String stacktrace = stringWriter.toString();
+            NativeLogging.crashLog(stacktrace);
+            defaultUncaughtExceptionHandler.uncaughtException(thread, exception);
+        });
         DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
         NativeEmulation.setDPI(displayMetrics.density);
         NativeEmulation.initializeActiveSettings(getInternalFolder().toString(), getInternalFolder().toString());

src/android/app/src/main/java/info/cemu/Cemu/nativeinterface/NativeLogging.java

@@ -0,0 +1,7 @@
+package info.cemu.Cemu.nativeinterface;
+
+public class NativeLogging {
+    public static native void log(String message);
+
+    public static native void crashLog(String stacktrace);
+}