Add first version

[ric-plt/sdl.git] / include / private / timerfd.hpp

diff --git a/include/private/timerfd.hpp b/include/private/timerfd.hpp
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+/*
+   Copyright (c) 2018-2019 Nokia.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+#ifndef SHAREDDATALAYER_TIMERFD_HPP_
+#define SHAREDDATALAYER_TIMERFD_HPP_
+
+#include <sys/timerfd.h>
+#include "private/timer.hpp"
+#include "private/filedescriptor.hpp"
+
+namespace shareddatalayer
+{
+    class Engine;
+    class System;
+
+    class TimerFD
+    {
+    public:
+        explicit TimerFD(Engine& engine);
+
+        TimerFD(System& system, Engine& engine);
+
+        ~TimerFD();
+
+        void arm(Timer& timer, const Timer::Duration& duration, const Timer::Callback& cb);
+
+        void disarm(const Timer& timer);
+
+        TimerFD(TimerFD&&) = delete;
+        TimerFD(const TimerFD&) = delete;
+        TimerFD& operator = (TimerFD&&) = delete;
+        TimerFD& operator = (const TimerFD&) = delete;
+
+    private:
+        using Queue = Timer::Queue;
+
+        bool isFirst(Queue::iterator it) const;
+
+        Timer::Duration toAbsolute(const Timer::Duration& duration);
+
+        void handleEvents();
+
+        bool timerExpired() const;
+
+        void handleExpiredTimers();
+
+        void popAndExecuteFirstTimer();
+
+        Timer::Duration nextTrigger() const;
+
+        void disarmTimerFD();
+
+        void armTimerFD(const Timer::Duration& duration);
+
+        void setTimeForTimerFD(time_t seconds, long int nanoseconds);
+
+        System& system;
+        FileDescriptor fd;
+        Queue queue;
+    };
+}
+
+#endif