Struct kernel::alloc::HeapGuard

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pub struct HeapGuard { /* private fields */ }

Expand description

A guard type that provides mutually exclusive access to the allocator as long as the guard is held.

Implementations

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impl HeapGuard

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pub fn free_space(&self) -> usize

The free space (in bytes) available to the allocator

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pub fn used_space(&self) -> usize

The used space (in bytes) available to the allocator

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pub fn alloc_box<T>(&mut self, data: T) -> Result<HeapBox<T>, ()>

Attempt to allocate a HeapBox using the allocator

If space was available, the allocation will be returned. If not, an error will be returned

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pub fn alloc_box_array<T: Copy + ?Sized>(
 &mut self,
 data: T,
 count: usize
) -> Result<HeapArray<T>, ()>

Attempt to allocate a HeapArray using the allocator

If space was available, the allocation will be returned. If not, an error will be returned

Trait Implementations

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impl Drop for HeapGuard

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations

impl !RefUnwindSafe for HeapGuard

impl Send for HeapGuard

impl Sync for HeapGuard

impl Unpin for HeapGuard

impl !UnwindSafe for HeapGuard

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Az for T

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fn az<Dst>(self) -> Dst where
T: Cast<Dst>,

Casts the value.

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Src, Dst> CastFrom<Src> for Dst where
Src: Cast<Dst>,

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fn cast_from(src: Src) -> Dst

Casts the value.

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impl<T> CheckedAs for T

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fn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,

Casts the value.

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impl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,

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fn checked_cast_from(src: Src) -> Option<Dst>

Casts the value.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<Src, Dst> LosslessTryInto<Dst> for Src where
Dst: LosslessTryFrom<Src>,

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fn lossless_try_into(self) -> Option<Dst>

Performs the conversion.

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impl<Src, Dst> LossyInto<Dst> for Src where
Dst: LossyFrom<Src>,

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fn lossy_into(self) -> Dst

Performs the conversion.

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impl<T> OverflowingAs for T

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fn overflowing_as<Dst>(self) -> (Dst, bool ) where
T: OverflowingCast<Dst>,

Casts the value.

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impl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,

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fn overflowing_cast_from(src: Src) -> (Dst, bool )

OverflowingCasts the value.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> SaturatingAs for T

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fn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,

Casts the value.

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impl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,

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fn saturating_cast_from(src: Src) -> Dst

Casts the value.

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<T> UnwrappedAs for T

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fn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,

Casts the value.

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impl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,

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fn unwrapped_cast_from(src: Src) -> Dst

UnwrappedCasts the value.

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impl<T> WrappingAs for T

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fn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,

Casts the value.

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impl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,

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fn wrapping_cast_from(src: Src) -> Dst

WrappingCasts the value.

Struct kernel::alloc::HeapGuard

Implementations

impl HeapGuard

pub fn free_space(&self) -> usize

pub fn used_space(&self) -> usize

pub fn alloc_box<T>(&mut self, data: T) -> Result<HeapBox<T>, ()>

pub fn alloc_box_array<T: Copy + ?Sized>( &mut self, data: T, count: usize) -> Result<HeapArray<T>, ()>

Trait Implementations

impl Drop for HeapGuard

fn drop(&mut self)

Auto Trait Implementations

impl !RefUnwindSafe for HeapGuard

impl Send for HeapGuard

impl Sync for HeapGuard

impl Unpin for HeapGuard

impl !UnwindSafe for HeapGuard

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Az for T

fn az<Dst>(self) -> Dst where T: Cast<Dst>,

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<Src, Dst> CastFrom<Src> for Dst where Src: Cast<Dst>,

fn cast_from(src: Src) -> Dst

impl<T> CheckedAs for T

fn checked_as<Dst>(self) -> Option<Dst> where T: CheckedCast<Dst>,

impl<Src, Dst> CheckedCastFrom<Src> for Dst where Src: CheckedCast<Dst>,

fn checked_cast_from(src: Src) -> Option<Dst>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<Src, Dst> LosslessTryInto<Dst> for Src where Dst: LosslessTryFrom<Src>,

fn lossless_try_into(self) -> Option<Dst>

impl<Src, Dst> LossyInto<Dst> for Src where Dst: LossyFrom<Src>,

fn lossy_into(self) -> Dst

impl<T> OverflowingAs for T

fn overflowing_as<Dst>(self) -> (Dst, bool) where T: OverflowingCast<Dst>,

impl<Src, Dst> OverflowingCastFrom<Src> for Dst where Src: OverflowingCast<Dst>,

fn overflowing_cast_from(src: Src) -> (Dst, bool)

impl<T> Same<T> for T

type Output = T

impl<T> SaturatingAs for T

fn saturating_as<Dst>(self) -> Dst where T: SaturatingCast<Dst>,

impl<Src, Dst> SaturatingCastFrom<Src> for Dst where Src: SaturatingCast<Dst>,

fn saturating_cast_from(src: Src) -> Dst

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> UnwrappedAs for T

fn unwrapped_as<Dst>(self) -> Dst where T: UnwrappedCast<Dst>,

impl<Src, Dst> UnwrappedCastFrom<Src> for Dst where Src: UnwrappedCast<Dst>,

fn unwrapped_cast_from(src: Src) -> Dst

impl<T> WrappingAs for T

fn wrapping_as<Dst>(self) -> Dst where T: WrappingCast<Dst>,

impl<Src, Dst> WrappingCastFrom<Src> for Dst where Src: WrappingCast<Dst>,

fn wrapping_cast_from(src: Src) -> Dst

pub fn alloc_box_array<T: Copy + ?Sized>(
&mut self,
data: T,
count: usize
) -> Result<HeapArray<T>, ()>

impl<T> Any for T where
T: 'static + ?Sized,

fn az<Dst>(self) -> Dst where
T: Cast<Dst>,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<Src, Dst> CastFrom<Src> for Dst where
Src: Cast<Dst>,

fn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,

impl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,

impl<T, U> Into<U> for T where
U: From<T>,

impl<Src, Dst> LosslessTryInto<Dst> for Src where
Dst: LosslessTryFrom<Src>,

impl<Src, Dst> LossyInto<Dst> for Src where
Dst: LossyFrom<Src>,

fn overflowing_as<Dst>(self) -> (Dst, bool ) where
T: OverflowingCast<Dst>,

impl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,

fn overflowing_cast_from(src: Src) -> (Dst, bool )

fn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,

impl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

fn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,

impl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,

fn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,

impl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,