1<h2>thread_set_policy</h2> 2<hr> 3<p> 4<strong>Function</strong> - Set target thread's scheduling policy state. (Protected Interface.) 5<h3>SYNOPSIS</h3> 6<pre> 7<strong>kern_return_t thread_set_policy</strong> 8 <strong>(thread_act_t</strong> <var>thread</var>, 9 <strong>processor_set_t</strong> <var>processor_set</var>, 10 <strong>policy_t</strong> <var>policy</var>, 11 <strong>policy_base_t</strong> <var>base</var>, 12 <strong>mach_msg_type_number_t</strong> <var>base_count</var>, 13 <strong>policy_limit_t</strong> <var>limit</var>, 14 <strong>mach_msg_type_number_</strong> <var>limit_count</var><strong>);</strong> 15</pre> 16<h3>PARAMETERS</h3> 17<dl> 18<p> 19<dt> <var>thread</var> 20<dd> 21[in thread send right] 22The thread scheduling policy is to be set. 23<p> 24<dt> <var>processor_set</var> 25<dd> 26[in processor-set-control send right] 27The control port for the processor 28set to which the thread is currently assigned. 29<p> 30<dt> <var>policy</var> 31<dd> 32[in scalar] 33Policy to be set. The values currently defined are <strong>POLICY_TIMESHARE</strong>, 34<strong>POLICY_RR</strong> (round robin) and <strong>POLICY_FIFO</strong> (firstin, first-out). 35<p> 36<dt> <var>base</var> 37<dd> 38[pointer to in structure] 39Base policy specific data, <strong>policy_fifo_base</strong>, 40<strong>policy_rr_base</strong> or <strong>policy_timeshare_base</strong>. 41<p> 42<dt> <var>base_count</var> 43<dd> 44[in scalar] 45The size of the buffer (in natural-sized units). 46<p> 47<dt> <var>limit</var> 48<dd> 49[pointer to in structure] 50Policy specific limits, <strong>policy_fifo_limit</strong>, 51<strong>policy_rr_limit</strong> or <strong>policy_timeshare_limit</strong>. 52<p> 53<dt> <var>limit_count</var> 54<dd> 55[in scalar] 56The size of the buffer (in natural-sized units). 57</dl> 58<h3>DESCRIPTION</h3> 59<p> 60The <strong>thread_set_policy</strong> function sets the scheduling 61attributes, both base and limit, for <var>thread</var>. 62<var>policy</var> may be any policy implemented by the processor set 63whether or not it is enabled. 64<h3>RETURN VALUES</h3> 65<dl> 66<p> 67<dt> <strong>KERN_INVALID_PROCESSOR_SET</strong> 68<dd> 69<var>processor_set</var> is not the thread's processor set control port. 70</dl> 71<h3>RELATED INFORMATION</h3> 72<p> 73Functions: 74<a href="P_set_policy_control.html"><strong>processor_set_policy_control</strong></a>, 75<a href="thread_policy.html"><strong>thread_policy</strong></a>, 76<a href="task_policy.html"><strong>task_policy</strong></a>, 77<a href="task_set_policy.html"><strong>task_set_policy</strong></a>. 78<p> 79Data Structures: 80<a href="policy_fifo_info.html"><strong>policy_fifo_info</strong></a>, 81<a href="policy_rr_info.html"><strong>policy_rr_info</strong></a>, 82<a href="policy_timeshare_info.html"><strong>policy_timeshare_info</strong></a>. 83