From 435e026c08701414a0a83c2e76322c4dd2a4c8eb Mon Sep 17 00:00:00 2001
From: Peter Johnson <johnson.peter@gmail.com>
Date: Sun, 22 Jul 2018 13:00:47 -0700
Subject: [PATCH] uv::Loop: Add user-defined data (#1205)

---
 wpiutil/src/main/native/include/wpi/uv/Loop.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/wpiutil/src/main/native/include/wpi/uv/Loop.h b/wpiutil/src/main/native/include/wpi/uv/Loop.h
index 2bcf77c026..727e43247e 100644
--- a/wpiutil/src/main/native/include/wpi/uv/Loop.h
+++ b/wpiutil/src/main/native/include/wpi/uv/Loop.h
@@ -208,6 +208,21 @@ class Loop final : public std::enable_shared_from_this<Loop> {
    */
   uv_loop_t* GetRaw() const noexcept { return m_loop; }
 
+  /**
+   * Gets user-defined data.
+   * @return User-defined data if any, nullptr otherwise.
+   */
+  template <typename T = void>
+  std::shared_ptr<T> GetData() const {
+    return std::static_pointer_cast<T>(m_data);
+  }
+
+  /**
+   * Sets user-defined data.
+   * @param data User-defined arbitrary data.
+   */
+  void SetData(std::shared_ptr<void> data) { m_data = std::move(data); }
+
   /**
    * Error signal
    */
@@ -220,6 +235,7 @@ class Loop final : public std::enable_shared_from_this<Loop> {
   void ReportError(int err) { error(Error(err)); }
 
  private:
+  std::shared_ptr<void> m_data;
   uv_loop_t* m_loop;
   uv_loop_t m_loopStruct;
 };