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33 .Nd function for getting per-process memory map information
40 .Ft struct kinfo_vmentry *
41 .Fn kinfo_getvmmap "pid_t pid" "int *cntp"
43 This function is used for obtaining virtual memory mapping information
44 of a particular process.
48 field contains the process identifier.
49 This should be the a process that you have privilege to access.
52 field is allows the caller to know how many records are returned.
54 This function is a wrapper around
59 While the kernel returns a packed structure, this function expands the
60 data into a fixed record format.
63 calls can cause significant CPU consumption because calculating the residency
64 counts requires iterating over all memory pages of the process.
65 Setting the sysctl variable
66 .Va kern.proc_vmmap_skip_resident_count
67 to 1 prevents this calculation.
71 function returns a pointer to an array of
72 .Vt struct kinfo_vmentry
73 structures as defined by
75 The array was obtained by an internal call to
77 and must be freed by the caller with a call to