068182e26c
First cut of a timerfd implementation. Still TODO: - fork/exec semantics - timerfd_settime TFD_TIMER_CANCEL_ON_SET flag - ioctl(TFD_IOC_SET_TICKS) - bug fixes Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
/* timer.h: Define class timer_tracker, base class for posix timers
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef __TIMER_H__
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#define __TIMER_H__
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#define TT_MAGIC 0x513e4a1c
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class timer_tracker
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{
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unsigned magic;
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timer_tracker *next;
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LONG instance_count;
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clockid_t clock_id;
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sigevent evp;
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timespec it_interval;
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bool deleting;
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HANDLE hcancel;
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HANDLE syncthread;
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HANDLE timerfd_event;
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int64_t interval_us;
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int64_t sleepto_us;
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LONG event_running;
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LONG64 overrun_count_curr;
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LONG64 overrun_count;
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bool cancel ();
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LONG decrement_instances ();
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int clean_and_unhook ();
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LONG64 _disarm_event ();
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public:
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timer_tracker (clockid_t, const sigevent *, bool);
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~timer_tracker ();
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inline bool is_timer_tracker () const { return magic == TT_MAGIC; }
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void increment_instances ();
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LONG64 wait (bool nonblocking);
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HANDLE get_timerfd_handle () const { return timerfd_event; }
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inline sigevent_t *sigevt () { return &evp; }
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inline LONG64 getoverrun () const { return overrun_count_curr; }
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void gettime (itimerspec *);
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int settime (int, const itimerspec *, itimerspec *);
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LONG arm_event ();
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unsigned int disarm_event ();
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DWORD thread_func ();
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static void fixup_after_fork ();
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static int close (timer_tracker *tt);
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};
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#endif /* __TIMER_H__ */
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