struct_hrtimer(9) [centos man page]

STRUCT 
HRTIMER(9)						   Driver Basics						 STRUCT HRTIMER(9)

NAME

       struct_hrtimer - the basic hrtimer structure

SYNOPSIS

       struct hrtimer {
	 struct timerqueue_node node;
	 ktime_t _softexpires;
	 enum hrtimer_restart	     (* function) (struct hrtimer *);
	 struct hrtimer_clock_base * base;
	 unsigned long state;
       #ifdef CONFIG_TIMER_STATS
	 int start_pid;
	 void * start_site;
	 char start_comm[16];
       #endif
       };

MEMBERS

       node
	   timerqueue node, which also manages node.expires, the absolute expiry time in the hrtimers internal representation. The time is related
	   to the clock on which the timer is based. Is setup by adding slack to the _softexpires value. For non range timers identical to
	   _softexpires.

       _softexpires
	   the absolute earliest expiry time of the hrtimer. The time which was given as expiry time when the timer was armed.

       function
	   timer expiry callback function

       base
	   pointer to the timer base (per cpu and per clock)

       state
	   state information (See bit values above)

       start_pid
	   timer statistics field to store the pid of the task which started the timer

       start_site
	   timer statistics field to store the site where the timer was started

       start_comm[16]
	   timer statistics field to store the name of the process which started the timer

DESCRIPTION

       The hrtimer structure must be initialized by hrtimer_init

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014							 STRUCT HRTIMER(9)

iv_timer(3)						    ivykis programmer's manual						       iv_timer(3)

NAME

       iv_timer_register, iv_timer_unregister, iv_timer_registered - deal with ivykis timers

SYNOPSIS

       #include <iv.h>

       struct iv_timer {
	       struct timespec	       expires;
	       void		       *cookie;
	       void		       (*handler)(void *);
       };

       void IV_TIMER_INIT(struct iv_timer *timer);
       void iv_timer_register(struct iv_timer *timer);
       void iv_timer_unregister(struct iv_timer *timer);
       int iv_timer_registered(struct iv_timer *timer);

DESCRIPTION

       The  functions  iv_timer_register and iv_timer_unregister register, respectively unregister, a timer with the current thread's ivykis event
       loop.  iv_timer_registered on a timer returns true if that timer is currently registered with ivykis.

       When a timer that is registered becomes 'ready', due to the current system clock value becoming	greater  than  or  equal  to  the  timer's
       ->expires  member  field,  the  callback  function  specified  by  ->handler is called in the thread that the timer was registered in, with
       ->cookie as its first and sole argument.  When this happens, the timer is transparently unregistered.

       The application is allowed to change the ->cookie and ->handler members at any  time.   The  application  is  not  allowed  to  change  the
       ->expires member while the timer is registered.

       A given struct iv_timer can only be registered in one thread at a time, and a timer can only be unregistered in the thread that it was reg-
       istered from.

       There is no limit on the number of timers registered at once.

       See iv_examples(3) for programming examples.

SEE ALSO

       ivykis(3), iv_examples(3)

ivykis								    2010-08-15							       iv_timer(3)