osfmk/man/tvalspec.html

   1 <h2>tvalspec</h2>
   2 <hr>
   3 <p>
   4 <strong>Structure</strong> - Defines format of system time values.
   5 <h3>SYNOPSIS</h3>
   6 <pre>
   7 <strong>struct tvalspec</strong>
   8 <strong>{</strong>
   9        <strong>unsigned int</strong>       <var>tv_sec</var><strong>;</strong>
  10        <strong>clock_res_t</strong>       <var>tv_nsec</var><strong>;</strong>
  11 <strong>};</strong>
  12
  13 <strong>typedef struct tvalspec tvalspec_t;</strong>
  14 </pre>
  15 <h3>FIELDS</h3>
  16 <dl>
  17 <dt> <var>tv_sec</var>
  18 <dd>
  19 Seconds.
  20 <p>
  21 <dt> <var>tv_nsec</var>
  22 <dd>
  23 Nanoseconds.
  24 </dl>
  25 <h3>DESCRIPTION</h3>
  26 <p>
  27 The <strong>tvalspec</strong> structure defines the format of the time
  28 structure supplied to or
  29 returned from the kernel.  This definition conforms to the Posix
  30 1003.4 <var>timespec</var>
  31 definition where the <var>tv_nsec</var> structure member is valid
  32 if (0 =< <var>tv_nsec</var> < 109) and
  33 the time period described is ((<var>tv_sec</var> * 109) + <var>tv_nsec</var>) nanoseconds.
  34 <h3>RELATED INFORMATION</h3>
  35 <p>
  36 Functions:
  37 <a href="clock_get_time.html"><strong>clock_get_time</strong></a>,
  38 <a href="clock_set_time.html"><strong>clock_set_time</strong></a>,
  39 <a href="clock_sleep.html"><strong>clock_sleep</strong></a>,
  40 <a href="clock_alarm.html"><strong>clock_alarm</strong></a>,
  41 <a href="clock_alarm_reply.html"><strong>clock_alarm_reply</strong></a>.
  42 <p>
  43 Data Structures:
  44 <a href="mapped_tvalspec.html"><strong>mapped_tvalspec</strong></a>.