1*699cd480SApple OSS Distributions<h2>processor_set_policy_disable</h2> 2*699cd480SApple OSS Distributions<hr> 3*699cd480SApple OSS Distributions<p> 4*699cd480SApple OSS Distributions<strong>Function</strong> - Disables a scheduling policy for a processor set. 5*699cd480SApple OSS Distributions<h3>SYNOPSIS</h3> 6*699cd480SApple OSS Distributions<pre> 7*699cd480SApple OSS Distributions<strong>#include< mach/mach_host.h></strong> 8*699cd480SApple OSS Distributions 9*699cd480SApple OSS Distributions<strong>kern_return_t processor_set_policy_disable</strong> 10*699cd480SApple OSS Distributions <strong>(processor_set_t</strong> <var>processor_set</var>, 11*699cd480SApple OSS Distributions <strong>int</strong> <var>policy</var>, 12*699cd480SApple OSS Distributions <strong>boolean_t</strong> <var>change_threads</var><strong>);</strong> 13*699cd480SApple OSS Distributions</pre> 14*699cd480SApple OSS Distributions<h3>PARAMETERS</h3> 15*699cd480SApple OSS Distributions<dl> 16*699cd480SApple OSS Distributions<dt> <var>processor_set</var> 17*699cd480SApple OSS Distributions<dd> 18*699cd480SApple OSS Distributions[in processor-set-control port] The control port for the processor set for which a scheduling policy is to be disabled. 19*699cd480SApple OSS Distributions<dt> <var>policy</var> 20*699cd480SApple OSS Distributions<dd> 21*699cd480SApple OSS Distributions[in scalar] Policy to be disabled. The values currently defined are POLICY_TIMESHARE and POLICY_FIXEDPRI. 22*699cd480SApple OSS Distributions<dt> <var>change_threads</var> 23*699cd480SApple OSS Distributions<dd> 24*699cd480SApple OSS Distributions[in scalar] If true, causes the scheduling policy for all threads currently running with policy to POLICY_TIMESHARE. 25*699cd480SApple OSS Distributions</dl> 26*699cd480SApple OSS Distributions<h3>DESCRIPTION</h3> 27*699cd480SApple OSS Distributions<p> 28*699cd480SApple OSS DistributionsThe <strong>processor_set_policy_disable</strong> 29*699cd480SApple OSS Distributionsfunction restricts the set of scheduling policies allowed for 30*699cd480SApple OSS Distributions<var>processor_set</var>. The set of scheduling policies allowed for a 31*699cd480SApple OSS Distributionsprocessor set is the set of policies allowed to be set for threads 32*699cd480SApple OSS Distributionsassigned to that processor set. The current set of permitted policies 33*699cd480SApple OSS Distributionscan be obtained from <strong>processor_set_info</strong>. Timesharing may 34*699cd480SApple OSS Distributionsnot be forbidden for any processor set. This is a compromise to reduce 35*699cd480SApple OSS Distributionsthe complexity of the assign operation; any thread whose 36*699cd480SApple OSS Distributions<var>policy</var> is forbidden by its target processor set has its 37*699cd480SApple OSS Distributions<var>policy</var> reset to timesharing. Disabling a scheduling 38*699cd480SApple OSS Distributions<var>policy</var> for a processor set has no effect on threads 39*699cd480SApple OSS Distributionscurrently assigned to that processor set unless 40*699cd480SApple OSS Distributions<var>change_threads</var> is TRUE, in which case their policies will 41*699cd480SApple OSS Distributionsbe reset to timesharing. 42*699cd480SApple OSS Distributions<h3>RETURN VALUES</h3> 43*699cd480SApple OSS Distributions<p> 44*699cd480SApple OSS DistributionsOnly generic errors apply. 45*699cd480SApple OSS Distributions<h3>RELATED INFORMATION</h3> 46*699cd480SApple OSS Distributions<p> 47*699cd480SApple OSS DistributionsFunctions: 48*699cd480SApple OSS Distributions<a href="P_set_policy_enable.html">processor_set_policy_enable</a>, 49*699cd480SApple OSS Distributions<a href="processor_set_info.html">processor_set_info</a>, 50*699cd480SApple OSS Distributions<a href="thread_policy.html">thread_policy</a>. 51