Structure - Used to present the sizes of kernel's major structures.
struct kernel_resource_sizes
{
       vm_size_t               task;
       vm_size_t             thread;
       vm_size_t               port;
       vm_size_t      memory_region;
       vm_size_t      memory_object;
};
typedef struct kernel_resource_sizes* kernel_resource_sizes_t;
The kernel_resource_sizes structure defines the sizes of significant kernel structures.
Functions: host_info.