1 files changed, 12 insertions, 0 deletions
diff --git a/include/mbgl/util/run_loop.hpp b/include/mbgl/util/run_loop.hpp
index 5cde95a531..c89b8bd795 100644
--- a/include/mbgl/util/run_loop.hpp
+++ b/include/mbgl/util/run_loop.hpp
@@ -48,6 +48,15 @@ public:
     void runOnce();
     void stop();
 
+    using PlatformCallback = std::function<void()>;
+
+    // Platform integration callback for platforms that do not have full
+    // run loop integration or don't want to block at the Mapbox GL Native
+    // loop. It will be called from any thread and is up to the platform
+    // to, after receiving the callback, call RunLoop::runOnce() from the
+    // same thread as the Map object lives.
+    void setPlatformCallback(PlatformCallback&& callback) { platformCallback = std::move(callback); }
+
     // So far only needed by the libcurl backend.
     void addWatch(int fd, Event, std::function<void(int, Event)>&& callback);
     void removeWatch(int fd);
@@ -95,6 +104,7 @@ private:
             defaultQueue.emplace(std::move(task));
         }
         wake();
+        platformCallback();
     }
 
     void process() {
@@ -117,6 +127,8 @@ private:
         }
     }
 
+    PlatformCallback platformCallback = [] {};
+
     Queue defaultQueue;
     Queue highPriorityQueue;
     std::mutex mutex;