xref: /xnu-8020.140.41/osfmk/man/memory_object_terminate.html (revision 27b03b360a988dfd3dfdf34262bb0042026747cc)
1*27b03b36SApple OSS Distributions<h2>memory_object_terminate</h2>
2*27b03b36SApple OSS Distributions<hr>
3*27b03b36SApple OSS Distributions<p>
4*27b03b36SApple OSS Distributions<strong>Server Interface</strong> - Relinquish access to a memory object.
5*27b03b36SApple OSS Distributions<h3>SYNOPSIS</h3>
6*27b03b36SApple OSS Distributions<pre>
7*27b03b36SApple OSS Distributions<strong>kern_return_t   memory_object_terminate</strong>
8*27b03b36SApple OSS Distributions                <strong>(memory_object_t</strong>                  <var>memory_object</var>,
9*27b03b36SApple OSS Distributions                 <strong>memory_object_control_t</strong>         <var>memory_control</var><strong>);</strong>
10*27b03b36SApple OSS Distributions
11*27b03b36SApple OSS Distributions
12*27b03b36SApple OSS Distributions
13*27b03b36SApple OSS Distributions<strong>kern_return_t   seqnos_memory_object_terminate</strong>
14*27b03b36SApple OSS Distributions                <strong>(memory_object_t</strong>                  <var>memory_object</var>,
15*27b03b36SApple OSS Distributions                 <strong>mach_port_seqno_t</strong>                        <var>seqno</var>,
16*27b03b36SApple OSS Distributions                 <strong>memory_object_control_t</strong>         <var>memory_control</var><strong>);</strong>
17*27b03b36SApple OSS Distributions</pre>
18*27b03b36SApple OSS Distributions<h3>PARAMETERS</h3>
19*27b03b36SApple OSS Distributions<dl>
20*27b03b36SApple OSS Distributions<p>
21*27b03b36SApple OSS Distributions<dt> <var>memory_object</var>
22*27b03b36SApple OSS Distributions<dd>
23*27b03b36SApple OSS Distributions[in abstract-memory-object (receive) right]
24*27b03b36SApple OSS DistributionsThe abstract memory
25*27b03b36SApple OSS Distributionsobject port that represents the memory object data.
26*27b03b36SApple OSS Distributions<p>
27*27b03b36SApple OSS Distributions<dt> <var>seqno</var>
28*27b03b36SApple OSS Distributions<dd>
29*27b03b36SApple OSS Distributions[in scalar]
30*27b03b36SApple OSS DistributionsThe sequence number of this message relative to the abstract
31*27b03b36SApple OSS Distributionsmemory object port.
32*27b03b36SApple OSS Distributions<p>
33*27b03b36SApple OSS Distributions<dt> <var>memory_control</var>
34*27b03b36SApple OSS Distributions<dd>
35*27b03b36SApple OSS Distributions[in memory-cache-control receive right]
36*27b03b36SApple OSS DistributionsThe memory cache control
37*27b03b36SApple OSS Distributionsport to be used for a response by the memory manager.  If the memory
38*27b03b36SApple OSS Distributionsobject has been supplied to more than one kernel, this parameter
39*27b03b36SApple OSS Distributionsidentifies the kernel that is making the call.
40*27b03b36SApple OSS Distributions</dl>
41*27b03b36SApple OSS Distributions<h3>DESCRIPTION</h3>
42*27b03b36SApple OSS Distributions<p>
43*27b03b36SApple OSS DistributionsA <strong>memory_object_terminate</strong> function is called as the
44*27b03b36SApple OSS Distributionsresult of a kernel
45*27b03b36SApple OSS Distributionsmessage notifying a memory manager that no mappings of the specified memory
46*27b03b36SApple OSS Distributionsobject remain.  The kernel makes this call to allow the memory
47*27b03b36SApple OSS Distributionsmanager to clean
48*27b03b36SApple OSS Distributionsup data structures associated with the deallocated mappings.
49*27b03b36SApple OSS DistributionsThe call provides
50*27b03b36SApple OSS Distributionsreceive rights to the memory cache control port so that the memory manager
51*27b03b36SApple OSS Distributionscan retrieve any messages it sent into this port before knowing the memory
52*27b03b36SApple OSS Distributionsobject was being terminated and then destroy the port.  The kernel also
53*27b03b36SApple OSS Distributionsrelinquishes its rights for all memory object ports.
54*27b03b36SApple OSS Distributions<p>
55*27b03b36SApple OSS DistributionsThe kernel terminates a memory object only after all address space mappings of
56*27b03b36SApple OSS Distributionsthe object have been deallocated, or upon explicit request by the memory
57*27b03b36SApple OSS Distributionsmanager.
58*27b03b36SApple OSS Distributions<h3>RETURN VALUES</h3>
59*27b03b36SApple OSS Distributions<p>
60*27b03b36SApple OSS DistributionsOnly generic errors apply.
61*27b03b36SApple OSS Distributions<h3>RELATED INFORMATION</h3>
62*27b03b36SApple OSS Distributions<p>
63*27b03b36SApple OSS DistributionsFunctions:
64*27b03b36SApple OSS Distributions<a href="memory_object_destroy.html"><strong>memory_object_destroy</strong></a>,
65*27b03b36SApple OSS Distributions<a href="mach_port_deallocate.html"><strong>mach_port_deallocate</strong></a>,
66*27b03b36SApple OSS Distributions<a href="memory_object_server.html"><strong>memory_object_server</strong></a>,
67*27b03b36SApple OSS Distributions<a href="SMO_server.html"><strong>seqnos_memory_object_server</strong></a>.
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