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• [DIR] ..
• [FILE] BindingsInstaller.h
• [FILE] BridgelessNativeMethodCallInvoker.cpp
• [FILE] BridgelessNativeMethodCallInvoker.h
• [FILE] BufferedRuntimeExecutor.cpp
• [FILE] BufferedRuntimeExecutor.h
• [FILE] CMakeLists.txt
• [FILE] PlatformTimerRegistry.h
• [FILE] README.md
• [FILE] React-RuntimeCore.podspec
• [FILE] React-RuntimeHermes.podspec
• [FILE] ReactInstance.cpp
• [FILE] ReactInstance.h
• [FILE] TimerManager.cpp
• [FILE] TimerManager.h
• [DIR] hermes
• [DIR] iostests
• [DIR] nativeviewconfig
• [DIR] platform
• [DIR] tests

Просмотр файла: TimerManager.h

/*
 * Copyright (c) Meta Platforms, Inc. and 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 <ReactCommon/RuntimeExecutor.h>
#include <cstdint>
#include <unordered_map>
#include <vector>

#include "PlatformTimerRegistry.h"

namespace facebook::react {

using TimerHandle = int;

enum class TimerSource {
  Unknown,
  SetTimeout,
  SetInterval,
  RequestAnimationFrame
};

/*
 * Wraps a jsi::Function to make it copyable so we can pass it into a lambda.
 */
struct TimerCallback {
  TimerCallback(
      jsi::Function callback,
      std::vector<jsi::Value> args,
      bool repeat,
      TimerSource source = TimerSource::Unknown)
      : callback_(std::move(callback)),
        args_(std::move(args)),
        repeat(repeat),
        source(source) {}

  void invoke(jsi::Runtime& runtime) {
    callback_.call(runtime, args_.data(), args_.size());
  }

  jsi::Function callback_;
  const std::vector<jsi::Value> args_;
  bool repeat;
  TimerSource source;
};

class TimerManager {
 public:
  explicit TimerManager(
      std::unique_ptr<PlatformTimerRegistry> platformTimerRegistry) noexcept;

  void setRuntimeExecutor(RuntimeExecutor runtimeExecutor) noexcept;

  void callReactNativeMicrotasks(jsi::Runtime& runtime);

  void callTimer(TimerHandle handle);

  void attachGlobals(jsi::Runtime& runtime);

 private:
  TimerHandle createReactNativeMicrotask(
      jsi::Function&& callback,
      std::vector<jsi::Value>&& args);

  void deleteReactNativeMicrotask(jsi::Runtime& runtime, TimerHandle handle);

  TimerHandle createTimer(
      jsi::Function&& callback,
      std::vector<jsi::Value>&& args,
      double delay,
      TimerSource source = TimerSource::Unknown);

  void deleteTimer(jsi::Runtime& runtime, TimerHandle handle);

  TimerHandle createRecurringTimer(
      jsi::Function&& callback,
      std::vector<jsi::Value>&& args,
      double delay,
      TimerSource source = TimerSource::Unknown);

  void deleteRecurringTimer(jsi::Runtime& runtime, TimerHandle handle);

  RuntimeExecutor runtimeExecutor_;
  std::unique_ptr<PlatformTimerRegistry> platformTimerRegistry_;

  // A map (id => callback func) of the currently active JS timers
  std::unordered_map<TimerHandle, TimerCallback> timers_;

  // Each timeout that is registered on this queue gets a sequential id.  This
  // is the global count from which those are assigned.
  // As per WHATWG HTML 8.6.1 (Timers) ids must be greater than zero, i.e. start
  // at 1
  TimerHandle timerIndex_{1};

  // The React Native microtask queue is used to back public APIs including
  // `queueMicrotask`, `clearImmediate`, and `setImmediate` (which is used by
  // the Promise polyfill) when the JSVM microtask mechanism is not used.
  std::vector<TimerHandle> reactNativeMicrotasksQueue_;
};

} // namespace facebook::react

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