1*699cd480SApple OSS Distributions<h2>default_pager_object_create</h2> 2*699cd480SApple OSS Distributions<hr> 3*699cd480SApple OSS Distributions<p> 4*699cd480SApple OSS Distributions<strong>Server Interface</strong> - Initialize a non-persistent memory object suitable for sharing between tasks. 5*699cd480SApple OSS Distributions<h3>SYNOPSIS</h3> 6*699cd480SApple OSS Distributions<pre> 7*699cd480SApple OSS Distributions<strong>kern_return_t default_pager_object_create</strong> 8*699cd480SApple OSS Distributions <strong>(mach_port_t</strong> <var>pager</var>, 9*699cd480SApple OSS Distributions <strong>memory_object_t</strong> <var>*memory_object</var>, 10*699cd480SApple OSS Distributions <strong>vm_size_t</strong> <var>object_size</var><strong>);</strong> 11*699cd480SApple OSS Distributions 12*699cd480SApple OSS Distributions 13*699cd480SApple OSS Distributions<strong>kern_return_t seqnos_default_pager_object_create</strong> 14*699cd480SApple OSS Distributions <strong>(mach_port_t</strong> <var>pager</var>, 15*699cd480SApple OSS Distributions <strong>mach_port_seqno_t</strong> <var>seqno</var>, 16*699cd480SApple OSS Distributions <strong>memory_object_t</strong> <var>*memory_object</var>, 17*699cd480SApple OSS Distributions <strong>vm_size_t</strong> <var>object_size</var><strong>);</strong> 18*699cd480SApple OSS Distributions</pre> 19*699cd480SApple OSS Distributions<h3>PARAMETERS</h3> 20*699cd480SApple OSS Distributions<dl> 21*699cd480SApple OSS Distributions<p> 22*699cd480SApple OSS Distributions<dt> <var>pager</var> 23*699cd480SApple OSS Distributions<dd> 24*699cd480SApple OSS Distributions[in default-pager (receive) right] 25*699cd480SApple OSS DistributionsThe default memory manager service 26*699cd480SApple OSS Distributionsport. 27*699cd480SApple OSS Distributions<p> 28*699cd480SApple OSS Distributions<dt> <var>seqno</var> 29*699cd480SApple OSS Distributions<dd> 30*699cd480SApple OSS Distributions[in scalar] 31*699cd480SApple OSS DistributionsThe sequence number of this message relative to the <var>pager</var> 32*699cd480SApple OSS Distributionsport. 33*699cd480SApple OSS Distributions<p> 34*699cd480SApple OSS Distributions<dt> <var>memory_object</var> 35*699cd480SApple OSS Distributions<dd> 36*699cd480SApple OSS Distributions[out memory-object send right] 37*699cd480SApple OSS DistributionsA memory object port (with full access) for the memory object. 38*699cd480SApple OSS Distributions<p> 39*699cd480SApple OSS Distributions<dt> <var>object_size</var> 40*699cd480SApple OSS Distributions<dd> 41*699cd480SApple OSS Distributions[in scalar] 42*699cd480SApple OSS DistributionsThe maximum size for the memory object. 43*699cd480SApple OSS Distributions</dl> 44*699cd480SApple OSS Distributions<h3>DESCRIPTION</h3> 45*699cd480SApple OSS Distributions<p> 46*699cd480SApple OSS DistributionsA <strong>default_pager_object_create</strong> function is called as 47*699cd480SApple OSS Distributionsthe result of a message 48*699cd480SApple OSS Distributionsrequesting that the default memory manager create and return a (shared) memory 49*699cd480SApple OSS Distributionsobject which is suitable for use with <strong>vm_map</strong>. This memory object has 50*699cd480SApple OSS Distributionsthe same properties as does a memory object provided by 51*699cd480SApple OSS Distributions<strong>vm_allocate</strong>: its initial 52*699cd480SApple OSS Distributionscontents are zero and the backing contents are temporary in that they do not 53*699cd480SApple OSS Distributionspersist after the memory object is destroyed. The memory object 54*699cd480SApple OSS Distributionsis suitable for use 55*699cd480SApple OSS Distributionsas non-permanent shared memory. The kernel does not make this call itself 56*699cd480SApple OSS Distributions(which is why it can be a synchronous call); this request is only issued by 57*699cd480SApple OSS Distributions(privileged) tasks holding the default memory manager port. 58*699cd480SApple OSS DistributionsThis call should be 59*699cd480SApple OSS Distributionscontrasted with the kernel's <strong>memory_object_create</strong> message, in which 60*699cd480SApple OSS Distributionsthe memory cache object is already created and the identity of the abstract 61*699cd480SApple OSS Distributionsmemory object is made known to the default manager. 62*699cd480SApple OSS Distributions<h3>RETURN VALUES</h3> 63*699cd480SApple OSS Distributions<p> 64*699cd480SApple OSS DistributionsOnly generic errors apply. 65*699cd480SApple OSS Distributions<h3>RELATED INFORMATION</h3> 66*699cd480SApple OSS Distributions<p> 67*699cd480SApple OSS DistributionsFunctions: 68*699cd480SApple OSS Distributions<a href="vm_map.html"><strong>vm_map</strong></a>, 69*699cd480SApple OSS Distributions<a href="HD_memory_manager.html"><strong>host_default_memory_manager</strong></a>, 70*699cd480SApple OSS Distributions<a href="memory_object_create.html"><strong>memory_object_create</strong></a>, 71*699cd480SApple OSS Distributions<a href="MO_default_server.html"><strong>memory_object_default_server</strong></a>, 72*699cd480SApple OSS Distributions<a href="SMO_default_server.html"><strong>seqnos_memory_object_default_server</strong></a>. 73