Struct MapFlags 

pub struct MapFlags { /* private fields */ }

Additional parameters for mmap.

Implementations

impl MapFlags

pub const MAP_FILE: MapFlags

Compatibility flag. Ignored.

pub const MAP_SHARED: MapFlags

Share this mapping. Mutually exclusive with MAP_PRIVATE.

pub const MAP_PRIVATE: MapFlags

Create a private copy-on-write mapping. Mutually exclusive with MAP_SHARED.

pub const MAP_FIXED: MapFlags

Place the mapping at exactly the address specified in addr.

pub const MAP_FIXED_NOREPLACE: MapFlags

Place the mapping at exactly the address specified in addr, but never clobber an existing range.

pub const MAP_ANON: MapFlags

Synonym for MAP_ANONYMOUS.

pub const MAP_ANONYMOUS: MapFlags

The mapping is not backed by any file.

pub const MAP_32BIT: MapFlags

Put the mapping into the first 2GB of the process address space.

pub const MAP_GROWSDOWN: MapFlags

Used for stacks; indicates to the kernel that the mapping should extend downward in memory.

pub const MAP_DENYWRITE: MapFlags

Compatibility flag. Ignored.

pub const MAP_EXECUTABLE: MapFlags

Compatibility flag. Ignored.

pub const MAP_LOCKED: MapFlags

Mark the mmaped region to be locked in the same way as mlock(2).

pub const MAP_NORESERVE: MapFlags

Do not reserve swap space for this mapping.

This was removed in FreeBSD 11 and is unused in DragonFlyBSD.

pub const MAP_POPULATE: MapFlags

Populate page tables for a mapping.

pub const MAP_NONBLOCK: MapFlags

Only meaningful when used with MAP_POPULATE. Don’t perform read-ahead.

pub const MAP_HUGETLB: MapFlags

Allocate the mapping using “huge pages.”

pub const MAP_HUGE_64KB: MapFlags

Make use of 64KB huge page (must be supported by the system)

pub const MAP_HUGE_512KB: MapFlags

Make use of 512KB huge page (must be supported by the system)

pub const MAP_HUGE_1MB: MapFlags

Make use of 1MB huge page (must be supported by the system)

pub const MAP_HUGE_2MB: MapFlags

Make use of 2MB huge page (must be supported by the system)

pub const MAP_HUGE_8MB: MapFlags

Make use of 8MB huge page (must be supported by the system)

pub const MAP_HUGE_16MB: MapFlags

Make use of 16MB huge page (must be supported by the system)

pub const MAP_HUGE_32MB: MapFlags

Make use of 32MB huge page (must be supported by the system)

pub const MAP_HUGE_256MB: MapFlags

Make use of 256MB huge page (must be supported by the system)

pub const MAP_HUGE_512MB: MapFlags

Make use of 512MB huge page (must be supported by the system)

pub const MAP_HUGE_1GB: MapFlags

Make use of 1GB huge page (must be supported by the system)

pub const MAP_HUGE_2GB: MapFlags

Make use of 2GB huge page (must be supported by the system)

pub const MAP_HUGE_16GB: MapFlags

Make use of 16GB huge page (must be supported by the system)

pub const MAP_STACK: MapFlags

Region grows down, like a stack.

pub const fn empty() -> MapFlags

Returns an empty set of flags.

pub const fn all() -> MapFlags

Returns the set containing all flags.

pub const fn bits(&self) -> i32

Returns the raw value of the flags currently stored.

pub const fn from_bits(bits: i32) -> Option<MapFlags>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: i32) -> MapFlags

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: i32) -> MapFlags

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

Safety

The caller of the bitflags! macro can chose to allow or disallow extra bits for their bitflags type.

The caller of from_bits_unchecked() has to ensure that all bits correspond to a defined flag or that extra bits are valid for this bitflags type.

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub const fn intersects(&self, other: MapFlags) -> bool

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: MapFlags) -> bool

Returns true if all of the flags in other are contained within self.

pub fn insert(&mut self, other: MapFlags)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: MapFlags)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: MapFlags)

Toggles the specified flags in-place.

pub fn set(&mut self, other: MapFlags, value: bool)

Inserts or removes the specified flags depending on the passed value.

pub const fn intersection(self, other: MapFlags) -> MapFlags

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

pub const fn union(self, other: MapFlags) -> MapFlags

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both (see Self::symmetric_difference if that is undesirable).

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

pub const fn difference(self, other: MapFlags) -> MapFlags

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

pub const fn symmetric_difference(self, other: MapFlags) -> MapFlags

Returns the symmetric difference between the flags in self and other.

Specifically, the returned set contains the flags present which are present in self or other, but that are not present in both. Equivalently, it contains the flags present in exactly one of the sets self and other.

This is equivalent to using the ^ operator (e.g. ops::BitXor), as in flags ^ other.

pub const fn complement(self) -> MapFlags

Returns the complement of this set of flags.

Specifically, the returned set contains all the flags which are not set in self, but which are allowed for this type.

Alternatively, it can be thought of as the set difference between Self::all() and self (e.g. Self::all() - self)

This is equivalent to using the ! operator (e.g. ops::Not), as in !flags.

Trait Implementations

impl Binary for MapFlags

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl BitAnd for MapFlags

fn bitand(self, other: MapFlags) -> MapFlags

Returns the intersection between the two sets of flags.

type Output = MapFlags

The resulting type after applying the & operator.

impl BitAndAssign for MapFlags

fn bitand_assign(&mut self, other: MapFlags)

Disables all flags disabled in the set.

impl BitOr for MapFlags

fn bitor(self, other: MapFlags) -> MapFlags

Returns the union of the two sets of flags.

type Output = MapFlags

The resulting type after applying the | operator.

impl BitOrAssign for MapFlags

fn bitor_assign(&mut self, other: MapFlags)

Adds the set of flags.

impl BitXor for MapFlags

fn bitxor(self, other: MapFlags) -> MapFlags

Returns the left flags, but with all the right flags toggled.

type Output = MapFlags

The resulting type after applying the ^ operator.

impl BitXorAssign for MapFlags

fn bitxor_assign(&mut self, other: MapFlags)

Toggles the set of flags.

impl Clone for MapFlags

fn clone(&self) -> MapFlags

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MapFlags

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Extend<MapFlags> for MapFlags

fn extend<T>(&mut self, iterator: T)

where T: IntoIterator<Item = MapFlags>,

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<MapFlags> for MapFlags

fn from_iter<T>(iterator: T) -> MapFlags

where T: IntoIterator<Item = MapFlags>,

Creates a value from an iterator.

impl Hash for MapFlags

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl LowerHex for MapFlags

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Not for MapFlags

fn not(self) -> MapFlags

Returns the complement of this set of flags.

type Output = MapFlags

The resulting type after applying the ! operator.

impl Octal for MapFlags

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Ord for MapFlags

fn cmp(&self, other: &MapFlags) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MapFlags

fn eq(&self, other: &MapFlags) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for MapFlags

fn partial_cmp(&self, other: &MapFlags) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub for MapFlags

fn sub(self, other: MapFlags) -> MapFlags

Returns the set difference of the two sets of flags.

type Output = MapFlags

The resulting type after applying the - operator.

impl SubAssign for MapFlags

fn sub_assign(&mut self, other: MapFlags)

Disables all flags enabled in the set.

impl UpperHex for MapFlags

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Copy for MapFlags

impl Eq for MapFlags

impl StructuralPartialEq for MapFlags