Minga.RenderModel.Window.RowSlotAllocator (Minga v0.1.0)

Persistent producer-owned allocator for the 28-bit row slot field.

Slots are monotonic within {content_epoch, source_id, identity_kind} and a key keeps its slot for the epoch. Allocation never reuses removed keys.

Summary

Types

key()

scope()

slot()

t()

Functions

allocate(allocator, scope, key)

Returns an existing slot or monotonically allocates one.

new()

Creates an empty allocator.

Types

key()

@type key() :: term()

scope()

@type scope() :: {non_neg_integer(), non_neg_integer(), atom()}

slot()

@type slot() :: 0..268_435_455

t()

@type t() :: %Minga.RenderModel.Window.RowSlotAllocator{
  next: %{optional(scope()) => non_neg_integer()},
  slots: %{optional({scope(), key()}) => slot()}
}

Functions

allocate(allocator, scope, key)

@spec allocate(t(), scope(), key()) :: {:ok, slot(), t()} | :reset_required

Returns an existing slot or monotonically allocates one.

new()

@spec new() :: t()

Creates an empty allocator.