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struct_hrtimer(9) [centos man page]

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)

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mktimer(3C)															       mktimer(3C)

mktimer - allocate a per-process timer SYNOPSIS
The function is used to allocate a per-process timer using the specified system-wide clock as the timing base. returns an unique timer ID of type used to identify the timer in timer requests (see gettimer(3C)). specifies the system-wide clock to be used as the timing base for the new timer. specifies the mechanism by which the process is to be notified when the timer expires. supports one per-process timer with a of and of If is the system causes a signal to be sent to the process whenever the timer expires. For the machine-dependent clock resolution and maximum value are and seconds, respectively. These constants are defined in RETURN VALUE
Upon successful completion, returns a which can be passed to the per_process timer calls. If unsuccessful, returns a value of and sets to indicate the error. ERRORS
fails if any of the following conditions are encountered: [EAGAIN] The calling process has already allocated all of the timers it is allowed. [EINVAL] is not defined, or does not allow the specified notification mechanism. FILES
SEE ALSO timers(2), getclock(3C), gettimer(3C), reltimer(3C), rmtimer(3C), setclock(3C), thread_safety(5). STANDARDS CONFORMANCE
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