Issue 4442 - Cache class and ctors references in JNI_Load/UnLoad

libadblockplus-android/jni/Utils.h

Index: libadblockplus-android/jni/Utils.h
diff --git a/libadblockplus-android/jni/Utils.h b/libadblockplus-android/jni/Utils.h
index 1f525b35cdf97148c39311d0efb929e143c4eee2..cd80c3acdf8b7c58bdf223a2b7dbeae07c7f4c64 100644
--- a/libadblockplus-android/jni/Utils.h
+++ b/libadblockplus-android/jni/Utils.h
@@ -31,6 +31,10 @@
 
 #define ABP_JNI_VERSION JNI_VERSION_1_6
 
+void JniUtils_OnLoad(JavaVM* vm, JNIEnv* env, void* reserved);
+
+void JniUtils_OnUnload(JavaVM* vm, JNIEnv* env, void* reserved);
+
 void JniThrowException(JNIEnv* env, const std::string& message);
 
 void JniThrowException(JNIEnv* env, const std::exception& e);
@@ -149,6 +153,10 @@ inline T* JniLongToTypePtr(jlong value)
 
 std::string JniJavaToStdString(JNIEnv* env, jstring str);
 
+jmethodID JniGetAddToListMethod(JNIEnv* env, jobject list);
+
+void JniAddObjectToList(JNIEnv* env, jobject list, jmethodID addMethod, jobject value);
+
 void JniAddObjectToList(JNIEnv* env, jobject list, jobject value);
 
 inline std::string JniGetStringField(JNIEnv* env, jclass clazz, jobject jObj, const char* name)