mach_port_allocate_full.html   [plain text]

<strong>Function</strong> - Create a port right with full Mach port semantics.
<strong>kern_return_t   mach_port_allocate_full</strong>
                <strong>(ipc_space_t</strong>                               <var>task</var>,
                 <strong>mach_port_right_t</strong>                        <var>right</var>,
                 <strong>subsystem_t</strong>                          <var>subsystem</var>,
                 <strong>mach_port_qos_t</strong>                            <var>qos</var>,
                 <strong>task</strong>                                      <var>name</var><strong>);</strong>
<dt> <var>task</var>
[in task send right] The task acquiring the port right.
<dt> <var>right</var>
[in scalar] The kind of entity to be created. This is one of the following:
<dt> <strong>MACH_PORT_RIGHT_RECEIVE</strong>
<strong>mach_port_allocate_full</strong> creates a port. The new port is not a member
of any port set. It doesn't have any extant send or send-once
rights. Its make-send count is zero, its sequence number is zero, its
queue limit is MACH_PORT_QLIMIT_DEFAULT, and it has no queued
messages. The <var>name</var> parameter
denotes the receive right for the new port.
The owning task does not hold send rights for the new port, only the receive
right. The <strong>mach_port_insert_right</strong>
and <strong>mach_port_extract_right</strong> interfaces can be used
to convert the receive right to a combined send/receive right.
<dt> <strong>MACH_PORT_RIGHT_PORT_SET</strong>
<strong>mach_port_allocate_full</strong> creates a port set. The new port set 
has no members.
<dt> <strong>MACH_PORT_RIGHT_DEAD_NAME</strong>
<strong>mach_port_allocate_full</strong> creates a dead name. The new dead 
name has one user reference.
<dt> <var>subsystem</var>
[in scalar] The port right naming the subsystem the newly created port 
is to be associated with.
<dt> <var>qos</var>
[pointer to an in/out structure] Structure used to specify
the desired "quality of service." This structure may be used
to mandate the name of the returned port right and/or the port's "quality
of service" attribute.  The current implementation recognizes two such
attributes: regular and realtime.
<dt> <var>name</var>
[out scalar] The task's name for the port right. This can be any name 
that wasn't in use.
The <strong>mach_port_allocate_full</strong> function creates a new right in the
specified task.  The new right's name is returned via the <var>name</var> parameter.
The new port supports the full set of Mach port semantics (i.e. no_more_senders
detection will work, if requested).
This interface is machine word length specific because of the port
name parameter.
<dt> <strong>KERN_NO_SPACE</strong>
There was no room in task's IPC name space for another right.
<a href="mach_port_allocate.html"><strong>mach_port_allocate</strong></a>,
<a href="mach_port_allocate.html"><strong>mach_port_allocate_qos</strong></a>,
<a href="mach_port_allocate_name.html"><strong>mach_port_allocate_name</strong></a>,
<a href="mach_port_deallocate.html"><strong>mach_port_deallocate</strong></a>,
<a href="mach_port_insert_right.html"><strong>mach_port_insert_right</strong></a>,
<a href="mach_port_extract_right.html"><strong>mach_port_extract_right</strong></a>.
<a href="mach_port_qos.html"><strong>mach_port_qos</strong></a>.