Struct DeviceBlock 

pub struct DeviceBlock {
    pub ptr: u64,
    pub device_ordinal: u32,
    pub alloc_stream: StreamId,
    pub bytes: usize,
    pub align: usize,
    pub tag: AllocTag,
    pub generation: Generation,
    pub state: BlockState,
}

One outstanding device-memory allocation. Owned by the caller until returned to its originating resource via DeviceMemoryResource::deallocate.

Carries the metadata required for stream-ordered correctness and post-mortem debugging: the resource that owns the block, the device ordinal, the stream the allocation is bound to, byte size, alignment, caller tag, generation number, and current state.

Fields

ptr: u64

Raw device pointer (opaque to safe Rust callers).

device_ordinal: u32

CUDA ordinal of the device this block lives on.

alloc_stream: StreamId

Allocation stream. Reads/writes on a different stream require explicit synchronization (event wait or device sync).

bytes: usize

Size in bytes. May exceed the caller-requested size when the resource rounds up for alignment or pool granularity.

align: usize

Alignment in bytes (always ≥ caller request).

tag: AllocTag

Caller-supplied tag, surfaced in allocation logs.

generation: Generation

Monotonic generation. Reused addresses get fresh generations.

state: BlockState

Current state. Adaptors transition this; tests assert on it.

Trait Implementations

impl Debug for DeviceBlock

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

Formats the value using the given formatter.