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/* timer.h: Define class timer_tracker, base class for posix timers
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef __TIMER_H__
#define __TIMER_H__
#define TT_MAGIC 0x513e4a1c
class timer_tracker
{
unsigned magic;
timer_tracker *next;
LONG instance_count;
clockid_t clock_id;
sigevent evp;
timespec it_interval;
bool deleting;
HANDLE hcancel;
HANDLE syncthread;
HANDLE timerfd_event;
int64_t interval_us;
int64_t sleepto_us;
LONG event_running;
LONG64 overrun_count_curr;
LONG64 overrun_count;
bool cancel ();
LONG decrement_instances ();
int clean_and_unhook ();
LONG64 _disarm_event ();
public:
timer_tracker (clockid_t, const sigevent *, bool);
~timer_tracker ();
inline bool is_timer_tracker () const { return magic == TT_MAGIC; }
void increment_instances ();
LONG64 wait (bool nonblocking);
HANDLE get_timerfd_handle () const { return timerfd_event; }
inline sigevent_t *sigevt () { return &evp; }
inline LONG64 getoverrun () const { return overrun_count_curr; }
void gettime (itimerspec *);
int settime (int, const itimerspec *, itimerspec *);
LONG arm_event ();
unsigned int disarm_event ();
DWORD thread_func ();
static void fixup_after_fork ();
static int close (timer_tracker *tt);
};
extern void fixup_timers_after_fork ();
#endif /* __TIMER_H__ */
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