Provide task runner for the node mode

atom/app/uv_task_runner.h

@@ -0,0 +1,44 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_APP_UV_TASK_RUNNER_H_
+#define ATOM_APP_UV_TASK_RUNNER_H_
+
+#include <map>
+
+#include "base/callback.h"
+#include "base/single_thread_task_runner.h"
+#include "vendor/node/deps/uv/include/uv.h"
+
+namespace atom {
+
+// TaskRunner implementation that posts tasks into libuv's default loop.
+class UvTaskRunner : public base::SingleThreadTaskRunner {
+ public:
+  explicit UvTaskRunner(uv_loop_t* loop);
+  ~UvTaskRunner() override;
+
+  // base::SingleThreadTaskRunner:
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const base::Closure& task,
+                       base::TimeDelta delay) override;
+  bool RunsTasksOnCurrentThread() const override;
+  bool PostNonNestableDelayedTask(
+      const tracked_objects::Location& from_here,
+      const base::Closure& task,
+      base::TimeDelta delay) override;
+
+ private:
+  static void OnTimeout(uv_timer_t* timer);
+
+  uv_loop_t* loop_;
+
+  std::map<uv_timer_t*, base::Closure> tasks_;
+
+  DISALLOW_COPY_AND_ASSIGN(UvTaskRunner);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_APP_UV_TASK_RUNNER_H_