Fabric: Farewell EventBeatBasedExecutor

Summary: We don't use it anymore.

Reviewed By: JoshuaGross

Differential Revision: D17115539

fbshipit-source-id: e1fa5cc023cd27e53307aa0ea8eae0bad5413be3

ReactCommon/fabric/core/events/EventBeatBasedExecutor.cpp

@@ -1,82 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#include <cassert>
-
-#include "EventBeatBasedExecutor.h"
-
-namespace facebook {
-namespace react {
-
-using Mode = EventBeatBasedExecutor::Mode;
-
-EventBeatBasedExecutor::EventBeatBasedExecutor(
-    std::unique_ptr<EventBeat> eventBeat)
-    : eventBeat_(std::move(eventBeat)) {
-  eventBeat_->setBeatCallback(
-      std::bind(&EventBeatBasedExecutor::onBeat, this, true));
-  eventBeat_->setFailCallback(
-      std::bind(&EventBeatBasedExecutor::onBeat, this, false));
-}
-
-void EventBeatBasedExecutor::operator()(Routine routine, Mode mode) const {
-  if (mode == Mode::Asynchronous) {
-    execute({
-        /* .routine = */ std::move(routine),
-    });
-    return;
-  }
-
-  std::mutex mutex;
-  mutex.lock();
-
-  execute({
-      /* .routine = */ std::move(routine),
-      /* .callback = */ [&mutex]() { mutex.unlock(); },
-  });
-
-  mutex.lock();
-}
-
-void EventBeatBasedExecutor::execute(Task task) const {
-  {
-    std::lock_guard<std::mutex> lock(mutex_);
-
-    tasks_.push_back(std::move(task));
-  }
-
-  eventBeat_->request();
-  eventBeat_->induce();
-}
-
-void EventBeatBasedExecutor::onBeat(bool success) const {
-  std::vector<Task> tasks;
-
-  {
-    std::lock_guard<std::mutex> lock(mutex_);
-
-    if (tasks_.size() == 0) {
-      return;
-    }
-
-    tasks = std::move(tasks_);
-    tasks_.clear();
-  }
-
-  for (const auto task : tasks) {
-    if (success) {
-      task.routine();
-    }
-
-    if (task.callback) {
-      task.callback();
-    }
-  }
-}
-
-} // namespace react
-} // namespace facebook

ReactCommon/fabric/core/events/EventBeatBasedExecutor.h

@@ -1,53 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-#pragma once
-
-#include <memory>
-#include <mutex>
-#include <vector>
-
-#include <react/core/EventBeat.h>
-
-namespace facebook {
-namespace react {
-
-/*
- * General purpose executor that uses EventBeat to ensure proper threading.
- */
-class EventBeatBasedExecutor {
- public:
-  using Routine = std::function<void()>;
-  using Callback = std::function<void()>;
-
-  struct Task {
-    Routine routine;
-    Callback callback;
-  };
-
-  enum class Mode { Synchronous, Asynchronous };
-
-  EventBeatBasedExecutor(std::unique_ptr<EventBeat> eventBeat);
-
-  /*
-   * Executes given routine with given mode.
-   */
-  void operator()(Routine routine, Mode mode = Mode::Asynchronous) const;
-
- private:
-  void onBeat(bool success = true) const;
-  void execute(Task task) const;
-
-  std::unique_ptr<EventBeat> eventBeat_;
-  mutable std::vector<Task> tasks_; // Protected by `mutex_`.
-  mutable std::mutex mutex_;
-};
-
-using EventBeatFactory = std::function<std::unique_ptr<EventBeat>()>;
-
-} // namespace react
-} // namespace facebook