Move common message integration code to NodeBindings' base class.

common/node_bindings.h

@@ -6,11 +6,16 @@
 #define RAVE_COMMON_NODE_BINDINGS_
 
 #include "base/basictypes.h"
+#include "vendor/node/deps/uv/include/uv.h"
 
 namespace WebKit {
 class WebFrame;
 }
 
+namespace base {
+class MessageLoop;
+}
+
 namespace atom {
 
 class NodeBindings {
@@ -30,17 +35,51 @@ class NodeBindings {
   virtual void BindTo(WebKit::WebFrame* frame);
 
   // Prepare for message loop integration.
-  virtual void PrepareMessageLoop() = 0;
+  virtual void PrepareMessageLoop();
 
   // Do message loop integration.
-  virtual void RunMessageLoop() = 0;
+  virtual void RunMessageLoop();
 
  protected:
   explicit NodeBindings(bool is_browser);
 
+  // Called to poll events in new thread.
+  virtual void PollEvents() = 0;
+
+  // Run the libuv loop for once.
+  void UvRunOnce();
+
+  // Make the main thread run libuv loop.
+  void WakeupMainThread();
+
+  // Are we running in browser.
   bool is_browser_;
 
+  // Main thread's MessageLoop.
+  base::MessageLoop* message_loop_;
+
+  // Main thread's libuv loop.
+  uv_loop_t* uv_loop_;
+
+  // Dummy handle to make uv's loop not quit.
+  uv_async_t dummy_uv_handle_;
+
+  // Thread for polling events.
+  uv_thread_t embed_thread_;
+
+  // Whether we're done.
+  bool embed_closed_;
+
+  // Semaphore to wait for main loop in the embed thread.
+  uv_sem_t embed_sem_;
+
  private:
+  // Thread to poll uv events.
+  static void EmbedThreadRunner(void *arg);
+
+  // Called when uv's watcher queue changes.
+  static void OnWatcherQueueChanged(uv_loop_t* loop);
+
   DISALLOW_COPY_AND_ASSIGN(NodeBindings);
 };