public:

/// 构造

/**

TimerFd(tbox::event::Loop *loop, const std::string &what = "TimerFd");

~TimerFd();

public:

/// 初始化

/**

bool initialize(const std::chrono::nanoseconds first,

const std::chrono::nanoseconds repeat = std::chrono::nanoseconds::zero());

/// 清理

void cleanup();

/// 设置回调

using Callback = std::function<void ()>;

void setCallback(Callback &&cb);

/// 检查是否已开启

bool isEnabled() const;

/// 开启

bool enable();

/// 关闭

bool disable();

/// 获取距下一次触发剩余的时长

std::chrono::nanoseconds remainTime() const;

private:

void onEvent(short events);

private:

struct Data;

Data *d_;