1*33de042dSApple OSS Distributions<h2>host_get_clock_control</h2> 2*33de042dSApple OSS Distributions<hr> 3*33de042dSApple OSS Distributions<p> 4*33de042dSApple OSS Distributions<strong>Function</strong> - Return a send right to a kernel clock's control port. 5*33de042dSApple OSS Distributions<h3>SYNOPSIS</h3> 6*33de042dSApple OSS Distributions<pre> 7*33de042dSApple OSS Distributions<strong>kern_return_t host_get_clock_control</strong> 8*33de042dSApple OSS Distributions <strong>(host_priv_t</strong> <var>host_priv</var>, 9*33de042dSApple OSS Distributions <strong>clock_id_t</strong> <var>id</var>, 10*33de042dSApple OSS Distributions <strong>clock_ctrl_t</strong> <var>clock_control</var><strong>);</strong> 11*33de042dSApple OSS Distributions</pre> 12*33de042dSApple OSS Distributions<h3>PARAMETERS</h3> 13*33de042dSApple OSS Distributions<dl> 14*33de042dSApple OSS Distributions<p> 15*33de042dSApple OSS Distributions<dt> <var>host_priv</var> 16*33de042dSApple OSS Distributions<dd> 17*33de042dSApple OSS Distributions[in host-control send right] 18*33de042dSApple OSS DistributionsThe control port for the host owning the 19*33de042dSApple OSS Distributionsclock. 20*33de042dSApple OSS Distributions<p> 21*33de042dSApple OSS Distributions<dt> <var>id</var> 22*33de042dSApple OSS Distributions<dd> 23*33de042dSApple OSS Distributions[in scalar] 24*33de042dSApple OSS DistributionsThe identification of the desired kernel clock. These values 25*33de042dSApple OSS Distributionsare defined in \*L<mach/clock_types.h>\*O. Although an implementation 26*33de042dSApple OSS Distributionsmay define additional values, the following values are always defined 27*33de042dSApple OSS Distributions(although only the REALTIME clock is required to be implemented): 28*33de042dSApple OSS Distributions<dl> 29*33de042dSApple OSS Distributions<p> 30*33de042dSApple OSS Distributions<dt> <strong>REALTIME_CLOCK</strong> 31*33de042dSApple OSS Distributions<dd> 32*33de042dSApple OSS DistributionsA moderate resolution clock service that (typically) tracks 33*33de042dSApple OSS Distributionstime since the system last boot. 34*33de042dSApple OSS Distributions<p> 35*33de042dSApple OSS Distributions<dt> <strong>BATTERY_CLOCK</strong> 36*33de042dSApple OSS Distributions<dd> 37*33de042dSApple OSS DistributionsA (typically) low resolution clock (to the second) that 38*33de042dSApple OSS Distributionssurvives power failures or service outages. 39*33de042dSApple OSS Distributions<p> 40*33de042dSApple OSS Distributions<dt> <strong>HIGHRES_CLOCK</strong> 41*33de042dSApple OSS Distributions<dd> 42*33de042dSApple OSS DistributionsA high resolution clock. 43*33de042dSApple OSS Distributions</dl> 44*33de042dSApple OSS Distributions<p> 45*33de042dSApple OSS Distributions<dt> <var>clock_control</var> 46*33de042dSApple OSS Distributions<dd> 47*33de042dSApple OSS Distributions[out clock-control send right] 48*33de042dSApple OSS DistributionsControl port for the clock. 49*33de042dSApple OSS Distributions</dl> 50*33de042dSApple OSS Distributions<h3>DESCRIPTION</h3> 51*33de042dSApple OSS Distributions<p> 52*33de042dSApple OSS DistributionsThe <strong>host_get_clock_control</strong> function returns a send 53*33de042dSApple OSS Distributionsright to the control port for 54*33de042dSApple OSS Distributionsa kernel clock object. This right is used to set the clock's 55*33de042dSApple OSS Distributionsresolution and time. 56*33de042dSApple OSS Distributions<h3>RETURN VALUES</h3> 57*33de042dSApple OSS Distributions<p> 58*33de042dSApple OSS DistributionsOnly generic errors apply. 59*33de042dSApple OSS Distributions<h3>RELATED INFORMATION</h3> 60*33de042dSApple OSS Distributions<p> 61*33de042dSApple OSS DistributionsFunctions: 62*33de042dSApple OSS Distributions<a href="clock_set_time.html"><strong>clock_set_time</strong></a>, 63*33de042dSApple OSS Distributions<a href="clock_set_attributes.html"><strong>clock_set_attributes</strong></a>, 64*33de042dSApple OSS Distributions<a href="host_get_clock_service.html"><strong>host_get_clock_service</strong></a>. 65