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Object

kernel::drm::gem::shmem

Struct Object 

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pub struct Object<T: DriverObject> { /* private fields */ }
Expand description

A shmem-backed GEM object.

§Invariants

obj contains a valid initialized struct drm_gem_shmem_object for the lifetime of this object.

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impl<T: DriverObject> Object<T>

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pub fn project<'__pin>( self: Pin<&'__pin mut Self>, ) -> ObjectProjection<'__pin, T>

Pin-projects all fields of Self.

These fields are structurally pinned:

  • obj
  • inner

These fields are not structurally pinned:

  • parent_resv_obj
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impl<T: DriverObject> Object<T>

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pub fn new( dev: &Device<T::Driver>, size: usize, config: ObjectConfig<'_, T>, args: T::Args, ) -> Result<ARef<Self>>

Create a new shmem-backed DRM object of the given size.

Additional config options can be specified using config.

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pub fn dev(&self) -> &Device<T::Driver>

Returns the Device that owns this GEM object.

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impl<T: DriverObject> AllocImpl for Object<T>

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const ALLOC_OPS: AllocOps

The C callback operations for this memory manager.
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type Driver = <T as DriverObject>::Driver

The Driver implementation for this AllocImpl.
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impl<T> AlwaysRefCounted for Object<T>
where Self: IntoGEMObject, T: DriverObject,

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fn inc_ref(&self)

Increments the reference count on the object.
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unsafe fn dec_ref(obj: NonNull<Self>)

Decrements the reference count on the object. Read more
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impl<T: DriverObject> Deref for Object<T>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<T: DriverObject> DerefMut for Object<T>

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fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.
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impl<T: DriverObject> HasPinData for Object<T>

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type PinData = __ThePinData<T>

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unsafe fn __pin_data() -> Self::PinData

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impl<T: DriverObject> IntoGEMObject for Object<T>

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fn as_raw(&self) -> *mut drm_gem_object

Returns a reference to the raw drm_gem_object structure, which must be valid as long as this owning object is valid.
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unsafe fn from_raw<'a>(obj: *mut drm_gem_object) -> &'a Object<T>

Converts a pointer to a struct drm_gem_object into a reference to Self. Read more
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impl<T: DriverObject> Send for Object<T>

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impl<T: DriverObject> Sync for Object<T>

Auto Trait Implementations§

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impl<T> !Freeze for Object<T>

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impl<T> !RefUnwindSafe for Object<T>

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impl<T> !UnsafeUnpin for Object<T>

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impl<T> !UnwindSafe for Object<T>

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> BaseObject for T
where T: IntoGEMObject,

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fn size(&self) -> usize

Returns the size of the object in bytes.
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fn create_handle<D, F>(&self, file: &File<F>) -> Result<u32>
where Self: AllocImpl<Driver = D>, D: Driver<Object = Self, File = F>, F: DriverFile<Driver = D>,

Creates a new handle for the object associated with a given File (or returns an existing one).
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fn lookup_handle<D, F>(file: &File<F>, handle: u32) -> Result<ARef<Self>>
where Self: AllocImpl<Driver = D>, D: Driver<Object = Self, File = F>, F: DriverFile<Driver = D>,

Looks up an object by its handle for a given File.
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fn create_mmap_offset(&self) -> Result<u64>

Creates an mmap offset to map the object from userspace.
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impl<T> Borrow<T> for T
where T: ?Sized,

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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,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Init<T> for T

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unsafe fn __init(self, slot: *mut T) -> Result<(), Infallible>

Initializes slot. Read more
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fn chain<F>(self, f: F) -> ChainInit<Self, F, T, E>
where F: FnOnce(&mut T) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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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<T> KnownSize for T

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fn size(_: *const T) -> usize

Get the size of an object of this type in bytes, with the metadata of the given pointer.
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impl<T> PinInit<T> for T

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unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), Infallible>

Initializes slot. Read more
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fn pin_chain<F>(self, f: F) -> ChainPinInit<Self, F, T, E>
where F: FnOnce(Pin<&mut T>) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, U, const N: u32> TryIntoBounded<T, N> for U
where T: Integer, U: TryInto<T>,

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fn try_into_bounded(self) -> Option<Bounded<T, N>>

Attempts to convert self into a Bounded using N bits. Read more