Linux Certif

Toute la documentation sur la certification Linux LPI

struct_hrtimer

NAME

struct_hrtimer - the basic hrtimer structure

SYNOPSIS

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

MEMBERS

node

red black tree node for time ordered insertion

_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)

cb_entry

list head to enqueue an expired timer into the callback list

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