source: flair-src/trunk/tools/Controller/Mavlink/src/CallbackTimer.h@ 137

Last change on this file since 137 was 88, checked in by Sanahuja Guillaume, 5 years ago

m

File size: 1.4 KB
Line 
1// created: 17/12/2015
2// updated: 25/07/2016
3// filename: CallbackTimer.h
4//
5// author: Milan Erdelj
6//
7// version: $Id: $
8//
9// purpose: Callback timer class (executing functions periodically)
10//
11//
12/*********************************************************************/
13
14#ifndef CALLBACKTIMER_H
15#define CALLBACKTIMER_H
16
17#include <functional>
18#include <chrono>
19#include <future>
20#include <cstdio>
21#include <iostream>
22
23class CallbackTimer {
24public:
25 CallbackTimer() :_execute(false) {}
26
27 ~CallbackTimer() {
28 if(_execute.load(std::memory_order_acquire)) {
29 stop();
30 }
31 }
32
33 void stop() {
34 _execute.store(false, std::memory_order_release);
35 if(_thd.joinable()) _thd.join();
36 }
37
38 void start(uint64_t interval, std::function<void(void)> callback) {
39 if(_execute.load(std::memory_order_acquire)) {
40 stop();
41 }
42 _execute.store(true, std::memory_order_release);
43 _thd = std::thread([this, interval, callback]() {
44 while (_execute.load(std::memory_order_acquire)) {
45 callback();
46 std::this_thread::sleep_for(std::chrono::microseconds(interval));
47 }
48 });
49 }
50
51 bool is_running() const noexcept {
52 return ( _execute.load(std::memory_order_acquire) && _thd.joinable() );
53 }
54
55private:
56 std::atomic<bool> _execute;
57 std::thread _thd;
58};
59
60#endif // CALLBACKTIMER_H
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