flutter::TaskRunnerWindow Class Reference

#include <task_runner_window.h>

Inheritance diagram for flutter::TaskRunnerWindow:

Classes
class	Delegate

Public Member Functions
void	WakeUp ()
void	AddDelegate (Delegate *delegate)
void	RemoveDelegate (Delegate *delegate)
void	PollOnce (std::chrono::milliseconds timeout)
	~TaskRunnerWindow ()

Static Public Member Functions
static std::shared_ptr< TaskRunnerWindow >	GetSharedInstance ()

Friends
class	testing::TestTaskRunnerWindow

Detailed Description

Definition at line 56 of file task_runner_window.h.

Constructor & Destructor Documentation

~TaskRunnerWindow()

flutter::TaskRunnerWindow::~TaskRunnerWindow

(

)

Definition at line 109 of file task_runner_window.cc.

                                    {
  timer_thread_.Stop();
 
  if (window_handle_) {
    DestroyWindow(window_handle_);
    window_handle_ = nullptr;
  }
  UnregisterClass(window_class_name_.c_str(), nullptr);
}

Member Function Documentation

AddDelegate()

void flutter::TaskRunnerWindow::AddDelegate

(

Delegate *

delegate

)

Definition at line 152 of file task_runner_window.cc.

                                                     {
  delegates_.push_back(delegate);
  SetTimer(std::chrono::nanoseconds::zero());
}

Referenced by flutter::testing::TEST().

GetSharedInstance()

std::shared_ptr< TaskRunnerWindow > flutter::TaskRunnerWindow::GetSharedInstance ( )

static

Definition at line 129 of file task_runner_window.cc.

                                                                    {
  static std::weak_ptr<TaskRunnerWindow> instance;
  auto res = instance.lock();
  if (!res) {
    // can't use make_shared with private contructor
    res.reset(new TaskRunnerWindow());
    instance = res;
  }
  return res;
}

Referenced by flutter::TaskRunner::TaskRunner().

PollOnce()

void flutter::TaskRunnerWindow::PollOnce

(

std::chrono::milliseconds

timeout

)

Definition at line 164 of file task_runner_window.cc.

                                                             {
  MSG msg;
  ::SetTimer(window_handle_, kPollTimeoutTimerId, timeout.count(), nullptr);
  if (GetMessage(&msg, window_handle_, 0, 0)) {
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }
  ::KillTimer(window_handle_, kPollTimeoutTimerId);
}

References flutter::kPollTimeoutTimerId.

RemoveDelegate()

void flutter::TaskRunnerWindow::RemoveDelegate

(

Delegate *

delegate

)

Definition at line 157 of file task_runner_window.cc.

                                                        {
  auto i = std::find(delegates_.begin(), delegates_.end(), delegate);
  if (i != delegates_.end()) {
    delegates_.erase(i);
  }
}

WakeUp()

void flutter::TaskRunnerWindow::WakeUp

(

)

Definition at line 140 of file task_runner_window.cc.

                              {
  bool expected = false;
  // Only post wake up message if needed otherwise the message queue will
  // get flooded possibly resulting in application stopping to respond.
  // https://github.com/flutter/flutter/issues/173843
  if (wake_up_posted_.compare_exchange_strong(expected, true)) {
    if (!PostMessage(window_handle_, WM_NULL, 0, 0)) {
      FML_LOG(ERROR) << "Failed to post message to main thread.";
    }
  }
}

Referenced by flutter::testing::TEST().

Friends And Related Function Documentation

testing::TestTaskRunnerWindow

friend class testing::TestTaskRunnerWindow

friend

Definition at line 80 of file task_runner_window.h.

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The documentation for this class was generated from the following files:

• shell/platform/windows/task_runner_window.h
• shell/platform/windows/task_runner_window.cc