xref: /xnu-10002.81.5/osfmk/man/MO_data_initialize.html (revision 5e3eaea39dcf651e66cb99ba7d70e32cc4a99587)
1*5e3eaea3SApple OSS Distributions<h2>memory_object_data_initialize</h2>
2*5e3eaea3SApple OSS Distributions<hr>
3*5e3eaea3SApple OSS Distributions<p>
4*5e3eaea3SApple OSS Distributions<strong>Server Interface</strong> - Request that the default pager record initialization information for specified memory object.
5*5e3eaea3SApple OSS Distributions<h3>SYNOPSIS</h3>
6*5e3eaea3SApple OSS Distributions<pre>
7*5e3eaea3SApple OSS Distributions<strong>kern_return_t   memory_object_data_initialize</strong>
8*5e3eaea3SApple OSS Distributions                <strong>(memory_object_t</strong>                  <var>memory_object</var>,
9*5e3eaea3SApple OSS Distributions                 <strong>memory_object_control_t</strong>         <var>memory_control</var>,
10*5e3eaea3SApple OSS Distributions                 <strong>vm_offset_t</strong>                             <var>offset</var>,
11*5e3eaea3SApple OSS Distributions                 <strong>pointer_t</strong>                                 <var>data</var><strong>);</strong>
12*5e3eaea3SApple OSS Distributions
13*5e3eaea3SApple OSS Distributions
14*5e3eaea3SApple OSS Distributions<strong>kern_return_t   seqnos_memory_object_data_initialize</strong>
15*5e3eaea3SApple OSS Distributions                <strong>(memory_object_t</strong>                  <var>memory_object</var>,
16*5e3eaea3SApple OSS Distributions                 <strong>mach_port_seqno_t</strong>                        <var>seqno</var>,
17*5e3eaea3SApple OSS Distributions                 <strong>memory_object_control_t</strong>         <var>memory_control</var>,
18*5e3eaea3SApple OSS Distributions                 <strong>vm_offset_t</strong>                             <var>offset</var>,
19*5e3eaea3SApple OSS Distributions                 <strong>pointer_t</strong>                                 <var>data</var><strong>);</strong>
20*5e3eaea3SApple OSS Distributions</pre>
21*5e3eaea3SApple OSS Distributions<h3>PARAMETERS</h3>
22*5e3eaea3SApple OSS Distributions<dl>
23*5e3eaea3SApple OSS Distributions<p>
24*5e3eaea3SApple OSS Distributions<dt> <var>memory_object</var>
25*5e3eaea3SApple OSS Distributions<dd>
26*5e3eaea3SApple OSS Distributions[in abstract-memory-object (receive) right]
27*5e3eaea3SApple OSS DistributionsThe abstract memory
28*5e3eaea3SApple OSS Distributionsobject port that represents the memory object data, as supplied by the
29*5e3eaea3SApple OSS Distributionskernel in a <strong>memory_object_create</strong> call.
30*5e3eaea3SApple OSS Distributions<p>
31*5e3eaea3SApple OSS Distributions<dt> <var>seqno</var>
32*5e3eaea3SApple OSS Distributions<dd>
33*5e3eaea3SApple OSS Distributions[in scalar]
34*5e3eaea3SApple OSS DistributionsThe sequence number of this message relative to the abstract
35*5e3eaea3SApple OSS Distributionsmemory object port.
36*5e3eaea3SApple OSS Distributions<p>
37*5e3eaea3SApple OSS Distributions<dt> <var>memory_control</var>
38*5e3eaea3SApple OSS Distributions<dd>
39*5e3eaea3SApple OSS Distributions[in memory-cache-control send right]
40*5e3eaea3SApple OSS DistributionsThe memory cache control port
41*5e3eaea3SApple OSS Distributionsto be used for a response by the memory manager.  If the memory
42*5e3eaea3SApple OSS Distributionsobject has been supplied to more than one kernel, this parameter
43*5e3eaea3SApple OSS Distributionsidentifies the kernel that is making the call.
44*5e3eaea3SApple OSS Distributions<p>
45*5e3eaea3SApple OSS Distributions<dt> <var>offset</var>
46*5e3eaea3SApple OSS Distributions<dd>
47*5e3eaea3SApple OSS Distributions[in scalar]
48*5e3eaea3SApple OSS DistributionsThe offset within the memory object.
49*5e3eaea3SApple OSS Distributions<p>
50*5e3eaea3SApple OSS Distributions<dt> <var>data</var>
51*5e3eaea3SApple OSS Distributions<dd>
52*5e3eaea3SApple OSS Distributions[in pointer to dynamic array of bytes]
53*5e3eaea3SApple OSS DistributionsThe data that has been modified
54*5e3eaea3SApple OSS Distributionswhile cached in physical memory.
55*5e3eaea3SApple OSS Distributions</dl>
56*5e3eaea3SApple OSS Distributions<h3>DESCRIPTION</h3>
57*5e3eaea3SApple OSS Distributions<p>
58*5e3eaea3SApple OSS DistributionsA <strong>memory_object_data_initialize</strong> function is called
59*5e3eaea3SApple OSS Distributionsas the result of a kernel
60*5e3eaea3SApple OSS Distributionsmessage providing the default memory manager with initial data for a
61*5e3eaea3SApple OSS Distributionskernel-created memory object.  If the memory manager already
62*5e3eaea3SApple OSS Distributionshas supplied data (by a previous <strong>memory_object_data_initialize</strong> or
63*5e3eaea3SApple OSS Distributions<strong>memory_object_data_return</strong>), it
64*5e3eaea3SApple OSS Distributionsshould ignore this call.  Otherwise, the call behaves the same as the
65*5e3eaea3SApple OSS Distributions<strong>memory_object_data_return</strong> call.
66*5e3eaea3SApple OSS Distributions<p>
67*5e3eaea3SApple OSS DistributionsThe kernel makes this call only to the default memory manager and only on
68*5e3eaea3SApple OSS Distributionstemporary memory objects that it has created with
69*5e3eaea3SApple OSS Distributions<strong>memory_object_create</strong>.
70*5e3eaea3SApple OSS Distributions<h3>RETURN VALUES</h3>
71*5e3eaea3SApple OSS Distributions<p>
72*5e3eaea3SApple OSS DistributionsOnly generic errors apply.
73*5e3eaea3SApple OSS Distributions<h3>RELATED INFORMATION</h3>
74*5e3eaea3SApple OSS Distributions<p>
75*5e3eaea3SApple OSS DistributionsFunctions:
76*5e3eaea3SApple OSS Distributions<a href="memory_object_create.html"><strong>memory_object_create</strong></a>,
77*5e3eaea3SApple OSS Distributions<a href="memory_object_data_return.html"><strong>memory_object_data_return</strong></a>,
78*5e3eaea3SApple OSS Distributions<a href="MO_default_server.html"><strong>memory_object_default_server</strong></a>,
79*5e3eaea3SApple OSS Distributions<a href="SMO_default_server.html"><strong>seqnos_memory_object_default_server</strong></a>.
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