1*bbb1b6f9SApple OSS Distributions<h2>default_pager_object_create</h2> 2*bbb1b6f9SApple OSS Distributions<hr> 3*bbb1b6f9SApple OSS Distributions<p> 4*bbb1b6f9SApple OSS Distributions<strong>Server Interface</strong> - Initialize a non-persistent memory object suitable for sharing between tasks. 5*bbb1b6f9SApple OSS Distributions<h3>SYNOPSIS</h3> 6*bbb1b6f9SApple OSS Distributions<pre> 7*bbb1b6f9SApple OSS Distributions<strong>kern_return_t default_pager_object_create</strong> 8*bbb1b6f9SApple OSS Distributions <strong>(mach_port_t</strong> <var>pager</var>, 9*bbb1b6f9SApple OSS Distributions <strong>memory_object_t</strong> <var>*memory_object</var>, 10*bbb1b6f9SApple OSS Distributions <strong>vm_size_t</strong> <var>object_size</var><strong>);</strong> 11*bbb1b6f9SApple OSS Distributions 12*bbb1b6f9SApple OSS Distributions 13*bbb1b6f9SApple OSS Distributions<strong>kern_return_t seqnos_default_pager_object_create</strong> 14*bbb1b6f9SApple OSS Distributions <strong>(mach_port_t</strong> <var>pager</var>, 15*bbb1b6f9SApple OSS Distributions <strong>mach_port_seqno_t</strong> <var>seqno</var>, 16*bbb1b6f9SApple OSS Distributions <strong>memory_object_t</strong> <var>*memory_object</var>, 17*bbb1b6f9SApple OSS Distributions <strong>vm_size_t</strong> <var>object_size</var><strong>);</strong> 18*bbb1b6f9SApple OSS Distributions</pre> 19*bbb1b6f9SApple OSS Distributions<h3>PARAMETERS</h3> 20*bbb1b6f9SApple OSS Distributions<dl> 21*bbb1b6f9SApple OSS Distributions<p> 22*bbb1b6f9SApple OSS Distributions<dt> <var>pager</var> 23*bbb1b6f9SApple OSS Distributions<dd> 24*bbb1b6f9SApple OSS Distributions[in default-pager (receive) right] 25*bbb1b6f9SApple OSS DistributionsThe default memory manager service 26*bbb1b6f9SApple OSS Distributionsport. 27*bbb1b6f9SApple OSS Distributions<p> 28*bbb1b6f9SApple OSS Distributions<dt> <var>seqno</var> 29*bbb1b6f9SApple OSS Distributions<dd> 30*bbb1b6f9SApple OSS Distributions[in scalar] 31*bbb1b6f9SApple OSS DistributionsThe sequence number of this message relative to the <var>pager</var> 32*bbb1b6f9SApple OSS Distributionsport. 33*bbb1b6f9SApple OSS Distributions<p> 34*bbb1b6f9SApple OSS Distributions<dt> <var>memory_object</var> 35*bbb1b6f9SApple OSS Distributions<dd> 36*bbb1b6f9SApple OSS Distributions[out memory-object send right] 37*bbb1b6f9SApple OSS DistributionsA memory object port (with full access) for the memory object. 38*bbb1b6f9SApple OSS Distributions<p> 39*bbb1b6f9SApple OSS Distributions<dt> <var>object_size</var> 40*bbb1b6f9SApple OSS Distributions<dd> 41*bbb1b6f9SApple OSS Distributions[in scalar] 42*bbb1b6f9SApple OSS DistributionsThe maximum size for the memory object. 43*bbb1b6f9SApple OSS Distributions</dl> 44*bbb1b6f9SApple OSS Distributions<h3>DESCRIPTION</h3> 45*bbb1b6f9SApple OSS Distributions<p> 46*bbb1b6f9SApple OSS DistributionsA <strong>default_pager_object_create</strong> function is called as 47*bbb1b6f9SApple OSS Distributionsthe result of a message 48*bbb1b6f9SApple OSS Distributionsrequesting that the default memory manager create and return a (shared) memory 49*bbb1b6f9SApple OSS Distributionsobject which is suitable for use with <strong>vm_map</strong>. This memory object has 50*bbb1b6f9SApple OSS Distributionsthe same properties as does a memory object provided by 51*bbb1b6f9SApple OSS Distributions<strong>vm_allocate</strong>: its initial 52*bbb1b6f9SApple OSS Distributionscontents are zero and the backing contents are temporary in that they do not 53*bbb1b6f9SApple OSS Distributionspersist after the memory object is destroyed. The memory object 54*bbb1b6f9SApple OSS Distributionsis suitable for use 55*bbb1b6f9SApple OSS Distributionsas non-permanent shared memory. The kernel does not make this call itself 56*bbb1b6f9SApple OSS Distributions(which is why it can be a synchronous call); this request is only issued by 57*bbb1b6f9SApple OSS Distributions(privileged) tasks holding the default memory manager port. 58*bbb1b6f9SApple OSS DistributionsThis call should be 59*bbb1b6f9SApple OSS Distributionscontrasted with the kernel's <strong>memory_object_create</strong> message, in which 60*bbb1b6f9SApple OSS Distributionsthe memory cache object is already created and the identity of the abstract 61*bbb1b6f9SApple OSS Distributionsmemory object is made known to the default manager. 62*bbb1b6f9SApple OSS Distributions<h3>RETURN VALUES</h3> 63*bbb1b6f9SApple OSS Distributions<p> 64*bbb1b6f9SApple OSS DistributionsOnly generic errors apply. 65*bbb1b6f9SApple OSS Distributions<h3>RELATED INFORMATION</h3> 66*bbb1b6f9SApple OSS Distributions<p> 67*bbb1b6f9SApple OSS DistributionsFunctions: 68*bbb1b6f9SApple OSS Distributions<a href="vm_map.html"><strong>vm_map</strong></a>, 69*bbb1b6f9SApple OSS Distributions<a href="HD_memory_manager.html"><strong>host_default_memory_manager</strong></a>, 70*bbb1b6f9SApple OSS Distributions<a href="memory_object_create.html"><strong>memory_object_create</strong></a>, 71*bbb1b6f9SApple OSS Distributions<a href="MO_default_server.html"><strong>memory_object_default_server</strong></a>, 72*bbb1b6f9SApple OSS Distributions<a href="SMO_default_server.html"><strong>seqnos_memory_object_default_server</strong></a>. 73