vm_region_basic_info

Structure - Defines the attributes of a task's memory region.

SYNOPSIS

struct vm_region_basic_info
{
       vm_prot_t             protection;
       vm_prot_t         max_protection;
       vm_inherit_t         inheritance;
       boolean_t                 shared;
       boolean_t               reserved;
       vm_offset_t               offset;
       vm_behavior_t           behavior;
       unsigned short  user_wired_count;
};

typedef struct vm_region_basic_info* vm_region_basic_info_t;

FIELDS

protection

The current protection for the region.

max_protection

The maximum protection allowed for the region.

inheritance

The inheritance attribute for the region.

shared

Shared indicator. If true, the region is shared by another task. If false, the region is not shared.

reserved

If true the region is protected from random allocation.

offset

The region's offset into the memory object. The region begins at this offset.

behavior

Expected reference pattern for the memory. Valid values are:

VM_BEHAVIOR_DEFAULT

The system's default behavior.

VM_BEHAVIOR_RANDOM

No particular order expected.

VM_BEHAVIOR_SEQUENTIAL

Forward sequential order.

VM_BEHAVIOR_RSEQNTL

Reverse sequential order.

DESCRIPTION

The vm_region_basic_info structure defines the attributes of a memory region returned by vm_region.

RELATED INFORMATION

Functions: vm_region, vm_inherit, vm_protect.