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OpenSolaris 2009.06 - man page for times (opensolaris section 2)

times(2)				   System Calls 				 times(2)

       times - get process and child process times

       #include <sys/times.h>
       #include <limits.h>

       clock_t times(struct tms *buffer);

       The  times()  function  fills  the tms structure pointed to by buffer with time-accounting
       information. The tms structure, defined in <sys/times.h>, contains the following members:

	 clock_t    tms_utime;
	 clock_t    tms_stime;
	 clock_t    tms_cutime;
	 clock_t    tms_cstime;

       All times are reported in clock ticks. The specific value for a clock tick is  defined  by
       the variable CLK_TCK, found in the header <limits.h>.

       The times of a terminated child process are included in the tms_cutime and tms_cstime mem-
       bers of the parent when wait(3C) or waitpid(3C) returns the process ID of this  terminated
       child.	If  a  child  process  has  not  waited for its children, their times will not be
       included in its times.

       The tms_utime member is the CPU time used while executing instructions in the  user  space
       of the calling process.

       The tms_stime member is the CPU time used by the system on behalf of the calling process.

       The  tms_cutime	member	is  the sum of the tms_utime and the tms_cutime of the child pro-

       The tms_cstime member is the sum of the tms_stime and the tms_cstime  of  the  child  pro-

       Upon  successful  completion, times() returns the elapsed real time, in clock ticks, since
       an arbitrary point in the past (for example, system start-up time). This  point	does  not
       change  from one invocation of times() within the process to another. The return value may
       overflow the possible range of type clock_t. If times() fails, (clock_t)-1 is returned and
       errno is set to indicate the error.

       The times() function will fail if:

       EFAULT	 The buffer argument points to an illegal address.

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Interface Stability	     |Standard			   |
       |MT-Level		     |Async-Signal-Safe 	   |

       time(1),   timex(1),   exec(2),	 fork(2),   time(2),  waitid(2),  wait(3C),  waitpid(3C),
       attributes(5), standards(5)

SunOS 5.11				   14 May 1997					 times(2)

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