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