vk::mem::virtual_block

Allocate a nonzero region with a nonzero power-of-two alignment.

Allocate downward from the upper end of a linear block.

Reject foreign, freed or stale tokens before reading placement metadata.

Clear all regions, invalidating every prior generation; never submits or waits.

Walk virtual placements/free spans for explicit extent statistics.

Free a checked live region and invalidate its token; no native effects.

Observe whether every virtual allocation has been explicitly released or cleared.

VMA virtual-TLSF search order; these policies are not latency guarantees.

Set checked per-region opaque metadata without native effects or ownership transfer.

Calculate allocation bytes, free bytes, free-region count and largest span.

Generation-checked identity in exactly one virtual block; no implicit free.

Placement snapshot; valid only while the matching allocation remains live.

Virtual TLSF or linear allocator; owns host metadata and no native objects.

Explicit virtual placement diagnostics; physical holes may not be immediately reusable by linear placement.

Host metadata statistics. Alignment holes remain free, not reserved to a token. Linear free spans can include holes that placement cannot immediately reuse.

Write explicit virtual metadata as ordered vk.memory.virtual.v1 JSON.