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//! This module roughly corresponds to `mach/vm_region.h`.

use boolean::boolean_t;
use mem;
use memory_object_types::{memory_object_offset_t, vm_object_id_t};
use message::mach_msg_type_number_t;
use vm_behavior::vm_behavior_t;
use vm_inherit::vm_inherit_t;
use vm_prot::vm_prot_t;
use vm_types::{mach_vm_address_t, mach_vm_size_t};

pub type vm32_object_id_t = u32;

pub type vm_region_info_t = *mut ::libc::c_int;
pub type vm_region_info_64_t = *mut ::libc::c_int;
pub type vm_region_recurse_info_t = *mut ::libc::c_int;
pub type vm_region_recurse_info_64_t = *mut ::libc::c_int;
pub type vm_region_flavor_t = ::libc::c_int;
pub type vm_region_info_data_t = [::libc::c_int; VM_REGION_INFO_MAX as usize];

pub type vm_region_basic_info_64_t = *mut vm_region_basic_info_64;
pub type vm_region_basic_info_data_64_t = vm_region_basic_info_64;
pub type vm_region_basic_info_t = *mut vm_region_basic_info;
pub type vm_region_basic_info_data_t = vm_region_basic_info;
pub type vm_region_extended_info_t = *mut vm_region_extended_info;
pub type vm_region_extended_info_data_t = vm_region_extended_info;
pub type vm_region_top_info_t = *mut vm_region_top_info;
pub type vm_region_top_info_data_t = vm_region_top_info;
pub type vm_region_submap_info_t = *mut vm_region_submap_info;
pub type vm_region_submap_info_data_t = vm_region_submap_info;
pub type vm_region_submap_info_64_t = *mut vm_region_submap_info_64;
pub type vm_region_submap_info_data_64_t = vm_region_submap_info_64;
pub type vm_region_submap_short_info_64_t = *mut vm_region_submap_short_info_64;
pub type vm_region_submap_short_info_data_64_t = vm_region_submap_short_info_64;
pub type vm_page_info_t = *mut ::libc::c_int;
pub type vm_page_info_flavor_t = ::libc::c_int;
pub type vm_page_info_basic_t = *mut vm_page_info_basic;
pub type vm_page_info_basic_data_t = vm_page_info_basic;
pub type mach_vm_read_entry_t = [mach_vm_read_entry; VM_MAP_ENTRY_MAX as usize];

pub const VM_REGION_INFO_MAX: ::libc::c_int = (1 << 10);
pub const VM_MAP_ENTRY_MAX: ::libc::c_int = (1 << 8);

pub const VM_PAGE_INFO_BASIC: vm_page_info_flavor_t = 1;

pub const VM_REGION_BASIC_INFO_64: vm_region_flavor_t = 9;
pub const VM_REGION_BASIC_INFO: vm_region_flavor_t = 10;
pub const VM_REGION_EXTENDED_INFO: vm_region_flavor_t = 13;
pub const VM_REGION_TOP_INFO: vm_region_flavor_t = 12;

pub const SM_COW: ::libc::c_uchar = 1;
pub const SM_PRIVATE: ::libc::c_uchar = 2;
pub const SM_EMPTY: ::libc::c_uchar = 3;
pub const SM_SHARED: ::libc::c_uchar = 4;
pub const SM_TRUESHARED: ::libc::c_uchar = 5;
pub const SM_PRIVATE_ALIASED: ::libc::c_uchar = 6;
pub const SM_SHARED_ALIASED: ::libc::c_uchar = 7;

#[repr(C, packed(4))]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_region_basic_info_64 {
    pub protection: vm_prot_t,
    pub max_protection: vm_prot_t,
    pub inheritance: vm_inherit_t,
    pub shared: boolean_t,
    pub reserved: boolean_t,
    pub offset: memory_object_offset_t,
    pub behavior: vm_behavior_t,
    pub user_wired_count: ::libc::c_ushort,
}

impl vm_region_basic_info_64 {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_region_basic_info {
    pub protection: vm_prot_t,
    pub max_protection: vm_prot_t,
    pub inheritance: vm_inherit_t,
    pub shared: boolean_t,
    pub reserved: boolean_t,
    pub offset: u32,
    pub behavior: vm_behavior_t,
    pub user_wired_count: ::libc::c_ushort,
}

impl vm_region_basic_info {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_region_extended_info {
    pub protection: vm_prot_t,
    pub user_tag: ::libc::c_uint,
    pub pages_resident: ::libc::c_uint,
    pub pages_shared_now_private: ::libc::c_uint,
    pub pages_swapped_out: ::libc::c_uint,
    pub pages_dirtied: ::libc::c_uint,
    pub ref_count: ::libc::c_uint,
    pub shadow_depth: ::libc::c_ushort,
    pub external_pager: ::libc::c_uchar,
    pub share_mode: ::libc::c_uchar,
    pub pages_reusable: ::libc::c_uint,
}

impl vm_region_extended_info {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_region_top_info {
    pub obj_id: ::libc::c_uint,
    pub ref_count: ::libc::c_uint,
    pub private_pages_resident: ::libc::c_uint,
    pub shared_pages_resident: ::libc::c_uint,
    pub share_mode: ::libc::c_uchar,
}

impl vm_region_top_info {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_region_submap_info {
    pub protection: vm_prot_t,
    pub max_protection: vm_prot_t,
    pub inheritance: vm_inherit_t,
    pub offset: u32,
    pub user_tag: ::libc::c_uint,
    pub pages_resident: ::libc::c_uint,
    pub pages_shared_now_private: ::libc::c_uint,
    pub pages_swapped_out: ::libc::c_uint,
    pub pages_dirtied: ::libc::c_uint,
    pub ref_count: ::libc::c_uint,
    pub shadow_depth: ::libc::c_ushort,
    pub external_pager: ::libc::c_uchar,
    pub share_mode: ::libc::c_uchar,
    pub is_submap: boolean_t,
    pub behavior: vm_behavior_t,
    pub object_id: vm32_object_id_t,
    pub user_wired_count: ::libc::c_ushort,
}

impl vm_region_submap_info {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C, packed(4))]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_region_submap_info_64 {
    pub protection: vm_prot_t,
    pub max_protection: vm_prot_t,
    pub inheritance: vm_inherit_t,
    pub offset: memory_object_offset_t,
    pub user_tag: ::libc::c_uint,
    pub pages_resident: ::libc::c_uint,
    pub pages_shared_now_private: ::libc::c_uint,
    pub pages_swapped_out: ::libc::c_uint,
    pub pages_dirtied: ::libc::c_uint,
    pub ref_count: ::libc::c_uint,
    pub shadow_depth: ::libc::c_ushort,
    pub external_pager: ::libc::c_uchar,
    pub share_mode: ::libc::c_uchar,
    pub is_submap: boolean_t,
    pub behavior: vm_behavior_t,
    pub object_id: vm32_object_id_t,
    pub user_wired_count: ::libc::c_ushort,
    pub pages_reusable: ::libc::c_uint,
}

impl vm_region_submap_info_64 {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C, packed(4))]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_region_submap_short_info_64 {
    pub protection: vm_prot_t,
    pub max_protection: vm_prot_t,
    pub inheritance: vm_inherit_t,
    pub offset: memory_object_offset_t,
    pub user_tag: ::libc::c_uint,
    pub ref_count: ::libc::c_uint,
    pub shadow_depth: ::libc::c_ushort,
    pub external_pager: ::libc::c_uchar,
    pub share_mode: ::libc::c_uchar,
    pub is_submap: boolean_t,
    pub behavior: vm_behavior_t,
    pub object_id: vm32_object_id_t,
    pub user_wired_count: ::libc::c_ushort,
}

impl vm_region_submap_short_info_64 {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct vm_page_info_basic {
    pub disposition: ::libc::c_int,
    pub ref_count: ::libc::c_int,
    pub object_id: vm_object_id_t,
    pub offset: memory_object_offset_t,
    pub depth: ::libc::c_int,
    pub __pad: ::libc::c_int,
}

impl vm_page_info_basic {
    pub fn count() -> mach_msg_type_number_t {
        (mem::size_of::<Self>() / mem::size_of::<::libc::c_int>()) as mach_msg_type_number_t
    }
}

#[repr(C, packed(4))]
#[derive(Copy, Clone, Debug, Default, Hash, PartialOrd, PartialEq, Eq, Ord)]
pub struct mach_vm_read_entry {
    pub address: mach_vm_address_t,
    pub size: mach_vm_size_t,
}