Enum GpuDeviceMemoryLimit 

#[non_exhaustive]
pub enum GpuDeviceMemoryLimit {
    Automatic {
        headroom_bytes: u64,
        fallback_bytes: u64,
        fraction: Option<GpuMemoryFraction>,
    },
    Explicit {
        limit_bytes: u64,
    },
}

Soft admission capacity calculation for one device.

Automatic resolves at build time, after the device is discovered, to the owned capacity minus headroom_bytes, or to fallback_bytes when the subtraction leaves nothing; fraction further caps the result at that share of the owned capacity. Explicit is accepted as given and is rejected when it exceeds the owned capacity: at validation for a static partition, at build for a whole device. Both describe the ledger’s configured limit; admission commits grants against it, and neither constrains the allocator installed on the device.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Automatic

Discovers admission capacity from the promised owned device capacity. The default reserves 500 MiB, falls back to 256 MiB and applies no fraction.

Fields

headroom_bytes: u64

Bytes subtracted from owned capacity before resolving the limit.

fallback_bytes: u64

Positive byte limit used when subtraction leaves no capacity.

fraction: Option<GpuMemoryFraction>

Optional further cap on the share of owned capacity.

Explicit

Declares an immutable byte limit checked against owned device capacity.

Fields

limit_bytes: u64

Admission capacity in bytes before backend reserve is subtracted.

Trait Implementations

impl Clone for GpuDeviceMemoryLimit

fn clone(&self) -> GpuDeviceMemoryLimit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for GpuDeviceMemoryLimit

impl Debug for GpuDeviceMemoryLimit

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

Formats the value using the given formatter.

impl Default for GpuDeviceMemoryLimit

fn default() -> GpuDeviceMemoryLimit

Returns the “default value” for a type.

impl Eq for GpuDeviceMemoryLimit

impl Hash for GpuDeviceMemoryLimit

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 PartialEq for GpuDeviceMemoryLimit

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for GpuDeviceMemoryLimit