1 files changed, 51 insertions, 0 deletions
diff --git a/platform/android/src/map_renderer_runnable.cpp b/platform/android/src/map_renderer_runnable.cpp
new file mode 100644
index 0000000000..4dc6611c40
--- /dev/null
+++ b/platform/android/src/map_renderer_runnable.cpp
@@ -0,0 +1,51 @@
+#include "map_renderer_runnable.hpp"
+
+#include <mbgl/util/logging.hpp>
+
+namespace mbgl {
+namespace android {
+
+MapRendererRunnable::MapRendererRunnable(jni::JNIEnv& env, std::weak_ptr<Mailbox> mailbox_)
+    : mailbox(std::move(mailbox_)) {
+
+    // Create the Java peer and hold on to a global reference
+    // Not using a weak reference here as this might oerflow
+    // the weak reference table on some devices
+    jni::UniqueLocalFrame frame = jni::PushLocalFrame(env, 5);
+    static auto constructor = javaClass.GetConstructor<jlong>(env);
+    auto instance = javaClass.New(env, constructor, reinterpret_cast<jlong>(this));
+    javaPeer = instance.NewGlobalRef(env);
+}
+
+MapRendererRunnable::~MapRendererRunnable() = default;
+
+void MapRendererRunnable::run(jni::JNIEnv&) {
+    Mailbox::maybeReceive(mailbox);
+}
+
+jni::UniqueObject<MapRendererRunnable> MapRendererRunnable::peer() {
+    return std::move(javaPeer);
+}
+
+// Static methods //
+
+jni::Class<MapRendererRunnable> MapRendererRunnable::javaClass;
+
+void MapRendererRunnable::registerNative(jni::JNIEnv& env) {
+    // Lookup the class
+    MapRendererRunnable::javaClass = *jni::Class<MapRendererRunnable>::Find(env).NewGlobalRef(env).release();
+
+#define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
+
+    jni::RegisterNativePeer<MapRendererRunnable>(
+            env,
+            MapRendererRunnable::javaClass,
+            "nativePtr",
+            std::make_unique<MapRendererRunnable, JNIEnv&>,
+            "nativeInitialize",
+            "finalize",
+            METHOD(&MapRendererRunnable::run, "run"));
+}
+
+} // namespace android
+} // namespace mbgl