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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
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/*
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* Vinace
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* Copyright (C) P.Y. Rollo 2009 <dev@pyrollo.com>
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*
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* Vinace is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Vinace is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _C_CLOCK_HPP_
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#define _C_CLOCK_HPP_
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#include <pthread.h>
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#include "../core/c-processor.hpp"
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//
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// Clock
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//
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// A clock that runs a processor and can trigger periodical tasks using timers
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//
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struct clockTimer {
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int period; // Number of cycles beetwen two calls
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int remaining; // Cycles remaining before next call
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void (*callback)(void *); // Pointer to the callback function
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void *ptr; // Void pointer given as first argument to the callback
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clockTimer *next; // Next timer in the chained list
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};
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class CClock
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{
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public:
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CClock(CProcessor *processor);
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~CClock();
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virtual void run() = 0;
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void start();
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void stop();
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void cycle();
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bool is_running() { return running; };
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void set_timer(int period, void (*callback)(void *), void *ptr);
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unsigned int get_cyclecount() { return cyclecount; }; // Get processor clock cycle count (CClocks must update this counter correctly)
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static void *run_thread(void* clock);
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protected:
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bool running;
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pthread_t thread;
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unsigned int cyclecount;
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private:
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CProcessor *processor;
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clockTimer *timers;
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// Instanciated members for performance purpose
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clockTimer *timer;
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};
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#endif // _C_CLOCK_HPP_
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