Manual Pages for UNIX Operating System command usage for man ddi_get_lbolt

Kernel Functions for Drivers                    ddi_get_lbolt(9F)



NAME
     ddi_get_lbolt, ddi_get_lbolt64 - return the number of  clock
     ticks since boot

SYNOPSIS
     #include 
     #include 
     #include 

     clock_t ddi_get_lbolt(void);


     int64_t ddi_get_lbolt64(void);


INTERFACE LEVEL
     Solaris DDI specific (Solaris DDI).

DESCRIPTION
     The ddi_get_lbolt() function returns a value that represents
     the  number  of  clock  ticks  since the system booted. This
     value is used as a counter or timer inside the  system  ker-
     nel.   The   tick  frequency  can  be  determined  by  using
     drv_usectohz(9F), which  converts  microseconds  into  clock
     ticks.


     The  ddi_get_lbolt64()  behaves  essentially  the  same   as
     ddi_get_lbolt(),  except  the  value is returned in a longer
     data type (int64_t) that  will  not  wrap  for  2.9  billion
     years.

RETURN VALUES
     The ddi_get_lbolt() function returns  the  number  of  clock
     ticks since boot in a clock_t type.


     The ddi_get_lbolt64() function returns the number  of  clock
     ticks since boot in a int64_t type.

CONTEXT
     These routines can be called from any context.

SEE ALSO
     ddi_get_time(9F), drv_getparm(9F), drv_usectohz(9F)


     Writing Device Drivers


     STREAMS Programming Guide




SunOS 5.11           Last change: 4 Sep 2009                    1