osfmk/man/mach_port_qos.html

   1 <h2>mach_port_qos</h2>
   2 <hr>
   3 <p>
   4 <strong>Structure</strong> - Specifies a port's attributes with respect to "Quality Of Service."
   5 <h3>SYNOPSIS</h3>
   6 <pre>
   7 <strong>typedef struct mach_port_qos</strong>
   8         <strong>{</strong>
   9                <strong>boolean_t</strong>      <var>name</var><strong>;</strong>
  10                <strong>boolean_t</strong>      <var>rt</var><strong>;</strong>
  11                <strong>boolean_t</strong>      <var>pad1</var><strong>;</strong>
  12                <strong>boolean_t</strong>      <var>pad2</var><strong>;</strong>
  13         <strong>} mach_port_qos_t;</strong>
  14 </pre>
  15 <h3>FIELDS</h3>
  16 <dl>
  17 <dt> <var>name</var>
  18 <dd>
  19      If TRUE, the system will bestow the user-specified name on the newly allocated port.
  20      Otherwise, the system will choose the port's name.
  21      <p>
  22      <dt> <var>rt</var>
  23 <dd>
  24      If TRUE, this field causes a realtime port to be allocated.
  25      Otherwise, a regular port will be allocated.
  26 <p>
  27      <dt> <var>pad1</var>
  28 <dd>
  29      A 30 bit padding field.
  30 <p>
  31      <dt> <var>pad2</var>
  32 <dd>
  33 A 32 bit padding field; with the <var>pad1</var> field, lengthens the
  34      structure to 64 bits.
  35 </dl>
  36 <h3>DESCRIPTION</h3>
  37 <p>
  38 The <strong>mach_port_qos</strong> structure is used to specify a port's
  39 "quality of service" attributes when allocating the port via the
  40 <strong>mach_port_allocate_qos</strong> interface.
  41 <h3>RELATED INFORMATION</h3>
  42 <p>
  43 Functions:
  44 <a href="mach_port_allocate_qos.html"><strong>mach_port_allocate_qos</strong></a>,
  45 <a href="mach_port_get_attributes.html"><strong>mach_port_get_attributes</strong></a>,
  46 <a href="mach_port_set_attributes.html"><strong>mach_port_set_attributes</strong></a>.