marcelb
8 months ago
parent
14663d631a
commit
e4fbabd530
@ -1,237 +0,0 @@ |
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#ifndef _ROTOR_ |
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#define _ROTOT_ |
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#include "runner.hpp" |
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#include "chrono" |
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#include <memory> |
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#include "iostream" |
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using namespace std; |
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using namespace marcelb; |
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using namespace asynco; |
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namespace marcelb { |
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namespace asynco { |
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/**
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* Get the time in ms from the epoch |
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*/ |
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int64_t rtime_ms() { |
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return chrono::duration_cast<chrono::milliseconds>(chrono::system_clock::now() |
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.time_since_epoch()) |
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.count(); |
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} |
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int64_t rtime_us() { |
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return chrono::duration_cast<chrono::microseconds>(chrono::system_clock::now() |
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.time_since_epoch()) |
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.count(); |
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} |
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namespace { |
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/**
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* Intern class for timer async loop |
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*/ |
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class timer_core { |
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public: |
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mutex hangon; |
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condition_variable cv; |
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function<void()> callback; |
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int64_t time; |
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int64_t next; |
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bool repeat; |
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bool stop; |
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/**
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* Timer constructor, receives a callback function and time |
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*/ |
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timer_core( function<void()> _callback, int64_t _time, bool _repeat): |
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callback(_callback), time(_time*1000), repeat(_repeat), stop(false) { |
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next = rtime_us() + time; |
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} |
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/**
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* Stop timer |
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*/ |
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void clear() { |
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// lock_guard<mutex> hang(hangon);
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stop = true; |
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cv.notify_one(); |
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} |
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/**
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* Destruktor of timer, call stop |
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*/ |
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~timer_core() { |
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clear(); |
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} |
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}; |
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/**
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* Event loop for time events |
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*/ |
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class rotor { |
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vector<shared_ptr<timer_core>> tcores; |
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mutex te_m; |
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bool rotating = true; |
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int64_t sampling; |
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condition_variable te_cv; |
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/**
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* Loop method, started by the constructor in a separate runner |
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* It checks the events on the stack and sends the expired ones to the runner |
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*/ |
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void loop() { |
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while (rotating) { |
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vector<shared_ptr<timer_core>>::iterator next_tc; |
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shared_ptr<timer_core> next_ptr; |
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{ |
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unique_lock<mutex> te_l(te_m); |
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te_cv.wait(te_l, [this]{ return !tcores.empty() || rotating; }); |
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if (!rotating) { |
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break; |
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} |
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next_tc = min_element( tcores.begin(), tcores.end(), |
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[](shared_ptr<timer_core> a, shared_ptr<timer_core> b ) { |
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return a->next < b->next; |
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} |
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); |
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next_ptr = *next_tc; |
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} |
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unique_lock<mutex> next_l(next_ptr->hangon); |
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next_ptr->cv.wait_for(next_l, chrono::microseconds(next_ptr->next - rtime_us()), [&next_ptr] () { |
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return next_ptr->stop; |
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}); |
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if (next_ptr->stop) { |
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remove(next_tc); |
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} else { |
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_asyncon.put_task(next_ptr->callback); |
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if (next_ptr->repeat) { |
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next_ptr->next += next_ptr->time; |
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} |
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else { |
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remove(next_tc); |
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} |
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} |
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}
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} |
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/**
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* The method deletes a non-repeating or stopped event from the stack |
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*/ |
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void remove(vector<shared_ptr<timer_core>>::iterator it) { |
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lock_guard<mutex> lock(te_m); |
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tcores.erase(it); |
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// te_cv.notify_one();
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} |
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public: |
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/**
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* Constructor for the rotor, starts the given loop by occupying one runner |
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*/ |
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rotor() { |
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_asyncon.put_task( [&] () { |
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loop(); |
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}); |
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}; |
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/**
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* Adds a time event to the stack |
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*/ |
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void insert(shared_ptr<timer_core> tcore) { |
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lock_guard<mutex> lock(te_m); |
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tcores.push_back(tcore); |
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te_cv.notify_one(); |
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}; |
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/**
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* Returns the number of active events |
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*/ |
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int active() { |
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return tcores.size(); |
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} |
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/**
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* Stops all active events and stops the rotor |
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*/ |
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~rotor() { |
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for (int i=0; i<tcores.size(); i++) { |
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tcores[i]->clear(); |
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} |
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rotating = false; |
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} |
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}; |
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/**
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* It is intended that there is only one global declaration |
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*/ |
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static rotor _rotor; |
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} |
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/**
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* Core class for pure async timer functions |
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*/ |
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class _timer_intern { |
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shared_ptr<timer_core> tcore; |
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public: |
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_timer_intern(function<void()> _callback, int64_t _time, bool repeat) { |
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tcore = make_shared<timer_core>(_callback, _time, repeat); |
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_rotor.insert(tcore); |
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} |
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/**
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* Stop interval |
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*/ |
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void clear() { |
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tcore->clear(); |
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} |
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}; |
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/**
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* Class interval for periodic execution of the callback in time in ms |
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*/ |
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class interval : public _timer_intern { |
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public: |
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/**
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* The constructor receives a callback function and an interval time |
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*/ |
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interval( function<void()> _callback, int64_t _time): |
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_timer_intern(_callback, _time, true) { |
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} |
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}; |
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/**
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* Class interval for delayed callback execution in ms |
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*/ |
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class timeout : public _timer_intern { |
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public: |
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/**
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* The constructor receives a callback function and a delay time |
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*/ |
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timeout( function<void()> _callback, int64_t delay): |
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_timer_intern(_callback, delay, false) { |
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} |
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}; |
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} |
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} |
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#endif |
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@ -1,136 +0,0 @@ |
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#ifndef _RUNNER_ |
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#define _RUNNER_ |
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#include <thread> |
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#include <vector> |
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#include <queue> |
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#include <functional> |
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#include <mutex> |
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#include <condition_variable> |
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#include <future> |
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using namespace std; |
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namespace marcelb { |
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namespace asynco { |
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#define HW_CONCURRENCY_MINIMAL 4 |
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/**
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* The runner class implements multithread, task stack and event loop for asynchronous execution of tasks |
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*/ |
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class runner { |
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private: |
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vector<thread> runners; |
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queue<function<void()>> tasks; |
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mutex q_io; |
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condition_variable cv; |
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bool stop; |
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public: |
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/**
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* The constructor starts as many threads as the system has cores,
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* and runs an event loop inside each one.
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* Each event loop waits for tasks from the stack and executes them. |
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*/ |
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runner(unsigned int _num_of_runners = 0) : stop(false) { |
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unsigned int num_of_runners = _num_of_runners; |
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if (num_of_runners == 0) { |
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#ifdef NUM_OF_RUNNERS |
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num_of_runners = NUM_OF_RUNNERS; |
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#else |
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num_of_runners = thread::hardware_concurrency(); |
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if (num_of_runners < HW_CONCURRENCY_MINIMAL) { |
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num_of_runners = HW_CONCURRENCY_MINIMAL; |
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} |
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#endif |
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} |
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for (size_t i = 0; i < num_of_runners; ++i) { |
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runners.emplace_back( thread([&] { |
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while (!stop) { |
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function<void()> task; |
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{ |
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unique_lock<mutex> lock(q_io); |
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cv.wait(lock, [this] { return stop || !tasks.empty(); }); |
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// if (stop && tasks.empty())
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if (stop) |
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return; |
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task = move(tasks.front()); |
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tasks.pop(); |
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} |
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task(); |
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} |
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})); |
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} |
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} |
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/**
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* With the method, we send the callback function and its arguments to the task stack |
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*/ |
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template<class F, class... Args> |
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auto put_task(F&& f, Args&&... args) |
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-> future<typename result_of<F(Args...)>::type> { |
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using return_type = typename result_of<F(Args...)>::type; |
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auto task = make_shared<packaged_task<return_type()>>(bind(forward<F>(f), forward<Args>(args)...)); |
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future<return_type> res = task->get_future(); |
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{ |
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unique_lock<mutex> lock(q_io); |
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if (stop) { |
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throw runtime_error("Pool is stoped!"); |
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} |
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tasks.emplace([task]() { (*task)(); }); |
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} |
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cv.notify_one(); |
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return res; |
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} |
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/**
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* Returns the number of tasks the runner has to perform |
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*/ |
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unsigned int count_tasks() { |
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return tasks.size(); |
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} |
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/**
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* Returns the number of threads used by the runner |
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*/ |
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unsigned int count_threads() { |
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return runners.size(); |
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} |
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/**
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* The destructor stops all loops and stops all threads |
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*/ |
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~runner() { |
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{ |
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unique_lock<mutex> lock(q_io); |
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stop = true; |
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} |
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cv.notify_all(); |
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for (thread& runner : runners) { |
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runner.join(); |
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} |
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runners.clear(); |
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} |
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}; |
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/**
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* Internal global library variable |
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*/ |
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static runner _asyncon; |
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} |
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} |
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#endif |
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@ -0,0 +1,223 @@ |
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#ifndef _ROTOR_ |
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#define _ROTOT_ |
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#include "asynco.hpp" |
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#include <chrono> |
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using namespace std; |
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using namespace marcelb; |
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using namespace asynco; |
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namespace marcelb { |
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namespace asynco { |
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/**
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* Get the time in ms from the epoch |
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*/ |
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int64_t rtime_ms() { |
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return chrono::duration_cast<chrono::milliseconds>(chrono::system_clock::now() |
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.time_since_epoch()) |
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.count(); |
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} |
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/**
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* Get the time in us from the epoch |
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*/ |
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int64_t rtime_us() { |
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return chrono::duration_cast<chrono::microseconds>(chrono::system_clock::now() |
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.time_since_epoch()) |
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.count(); |
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} |
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/**
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* Core timer class for construct time async functions |
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*/ |
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class timer { |
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boost::asio::steady_timer st; |
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bool _stop = false; |
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bool repeate; |
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function<void()> callback; |
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uint64_t time; |
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uint64_t _ticks = 0; |
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/**
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* A method to assign a callback wrapper and a reinitialization algorithm |
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*/ |
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void init() { |
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st.async_wait( [this] (const boost::system::error_code&) { |
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if (!_stop) { |
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callback(); |
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if (repeate) { |
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st = boost::asio::steady_timer(_asynco_engine.io_context, boost::asio::chrono::milliseconds(time)); |
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init(); |
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} |
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_ticks++; |
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} |
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}); |
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} |
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public: |
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/**
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* The constructor creates the steady_timer and accompanying variables and runs a method to initialize the timer |
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*/ |
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timer (function<void()> _callback, uint64_t _time, bool _repeate) : |
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st(_asynco_engine.io_context, boost::asio::chrono::milliseconds(_time)), |
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_stop(false), |
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repeate(_repeate), |
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callback(_callback), |
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time(_time) { |
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init(); |
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} |
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/**
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* Stop timer |
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* The stop flag is set and timer remove it from the queue |
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*/ |
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void stop() { |
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_stop = true; |
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st.cancel(); |
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} |
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/**
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* Run callback now |
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* Forces the callback function to run independently of the timer |
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*/ |
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void now() { |
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st.cancel(); |
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} |
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/**
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* Get the number of times the timer callback was runned |
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*/ |
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uint64_t ticks() { |
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return _ticks; |
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} |
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/**
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* The logic status of the timer stop state |
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*/ |
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bool stoped() { |
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return _stop; |
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} |
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/**
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* The destructor stops the timer |
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*/ |
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~timer() { |
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stop(); |
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} |
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}; |
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/**
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* Class interval for periodic execution of the callback in time in ms |
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*/ |
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class interval { |
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shared_ptr<timer> _timer; |
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public: |
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/**
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* Constructor initializes a shared pointer of type timer |
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*/ |
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interval(function<void()> callback, uint64_t time) :
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_timer(make_shared<timer> (callback, time, true)) { |
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} |
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/**
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* Stop interval |
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* The stop flag is set and interval remove it from the queue |
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*/ |
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void stop() { |
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_timer->stop(); |
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} |
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/**
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* Run callback now |
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* Forces the callback function to run independently of the interval |
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*/ |
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void now() { |
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_timer->now(); |
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} |
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/**
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* Get the number of times the interval callback was runned |
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*/ |
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uint64_t ticks() { |
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return _timer->ticks(); |
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} |
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/**
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* The logic status of the interval stop state |
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*/ |
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bool stoped() { |
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return _timer->stoped(); |
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} |
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/**
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* The destructor stops the interval |
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*/ |
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~interval() { |
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stop(); |
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} |
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}; |
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/**
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* Class timeout for delayed callback execution in ms |
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*/ |
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class timeout { |
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shared_ptr<timer> _timer; |
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public: |
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/**
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* Constructor initializes a shared pointer of type timer |
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*/ |
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timeout(function<void()> callback, uint64_t time) :
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_timer(make_shared<timer> (callback, time, false)) { |
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} |
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/**
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* Stop timeout |
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* The stop flag is set and timeout remove it from the queue |
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*/ |
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void stop() { |
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_timer->stop(); |
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} |
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/**
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* Run callback now |
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* Forces the callback function to run independently of the timeout |
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*/ |
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void now() { |
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_timer->now(); |
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} |
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/**
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* Get the number of times the timeout callback was runned |
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*/ |
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bool expired() { |
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return bool(_timer->ticks()); |
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} |
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/**
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* The logic status of the timeout stop state |
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*/ |
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bool stoped() { |
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return _timer->stoped(); |
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} |
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/**
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* The destructor stops the timeout |
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*/ |
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~timeout() { |
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stop(); |
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} |
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}; |
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} |
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} |
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#endif |
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