80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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sortix/kernel/timer.h
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A virtual timer that triggers an action in a worker thread when triggered.
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*******************************************************************************/
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#ifndef INCLUDE_SORTIX_KERNEL_TIMER_H
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#define INCLUDE_SORTIX_KERNEL_TIMER_H
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#include <sortix/timespec.h>
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#include <sortix/itimerspec.h>
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#include <sortix/kernel/kthread.h>
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namespace Sortix {
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class Clock;
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class Timer;
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const int TIMER_ABSOLUTE = 1 << 0;
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const int TIMER_ACTIVE = 1 << 1;
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const int TIMER_FIRING = 1 << 2;
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const int TIMER_FUNC_INTERRUPT_HANDLER = 1 << 3;
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const int TIMER_FUNC_ADVANCE_THREAD = 1 << 4;
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class Timer
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{
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public:
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Timer();
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~Timer();
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public:
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struct itimerspec value;
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Clock* clock;
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Timer* prev_timer;
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Timer* next_timer;
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void (*callback)(Clock* clock, Timer* timer, void* user);
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void* user;
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size_t num_firings_scheduled;
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size_t num_overrun_events;
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int flags;
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private:
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void Fire();
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void GetInternal(struct itimerspec* current);
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public:
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void Attach(Clock* the_clock);
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void Detach();
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bool IsAttached() const { return clock; }
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void Cancel();
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Clock* GetClock() const { return clock; }
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void Get(struct itimerspec* current);
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void Set(struct itimerspec* value, struct itimerspec* ovalue, int flags,
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void (*callback)(Clock*, Timer*, void*), void* user);
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};
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} // namespace Sortix
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#endif
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