Add Scoped Local and Global Ref

Summary: Add ScopedLocalRef, ScopedGlobalRef and some common methods to be used later.

Reviewed By: amir-shalem

Differential Revision: D17711284

fbshipit-source-id: be43d5e246bc2406765057783be11854877c41f1

java/jni/macros.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the LICENSE
+ * file in the root directory of this source tree.
+ */
+#pragma once
+
+#include <cstdlib>
+
+#ifdef __ANDROID__
+#include <android/log.h>
+#endif
+
+#ifdef __ANDROID__
+#define VANILLAJNI_LOG_ERROR(tag, format, ...) \
+  __android_log_print(ANDROID_LOG_ERROR, tag, format, ##__VA_ARGS__)
+#else
+#define VANILLAJNI_LOG_ERROR(tag, format, ...)
+#endif
+
+#define VANILLAJNI_DIE() std::abort()