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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/util/executor.h>
#include <vespa/vespalib/util/sync.h>
#include <vespa/fastos/thread.h>
#include <vector>
class FNET_Transport;
namespace vespalib {
class TimerTask;
/**
* Timer is a class capable of running Tasks at a regular
* interval. The timer can be reset to clear all tasks currently being
* scheduled.
*/
class Timer
{
private:
typedef std::unique_ptr<TimerTask> TimerTaskPtr;
typedef std::vector<TimerTaskPtr> TaskList;
FastOS_ThreadPool _threadPool;
std::unique_ptr<FNET_Transport> _transport;
vespalib::Lock _lock;
TaskList _taskList;
public:
/**
* Create a new timer, capable of scheduling tasks at fixed intervals.
*/
Timer();
/**
* Destroys this timer, finishing the current task executing and then
* finishing.
*/
~Timer();
/**
* Schedule new task to be executed at specified intervals.
*
* @param task The task to schedule.
* @param delay The delay to wait before first execution.
* @param interval The interval in seconds.
*/
void scheduleAtFixedRate(vespalib::Executor::Task::UP task, double delay, double interval);
/**
* Reset timer, clearing the list of task to execute.
*/
void reset();
};
}
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