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Subtype AbstractArray for TileArray #176

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Subtype AbstractArray for TileArray #176

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20 changes: 19 additions & 1 deletion src/language/types.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -151,7 +151,7 @@ specializations (e.g., aligned vs unaligned) produce different cubins.
- `sizes::NTuple{N, Int32}`: Size in each dimension
- `strides::NTuple{N, Int32}`: Stride in each dimension (in elements)
"""
struct TileArray{T, N, S}
struct TileArray{T, N, S} <: AbstractArray{T, N}
ptr::Ptr{T}
sizes::NTuple{N, Int32}
strides::NTuple{N, Int32}
Expand All @@ -168,6 +168,24 @@ function Base.size(arr::TileArray{<:Any, N}, d::Integer) where N
return d > N ? Int32(1) : arr.sizes[d]
end
Base.length(arr::TileArray) = prod(size(arr))

function Base.getindex(arr::TileArray, I...)
error(
"TileArray does not support host-side indexing. " *
"Use ct.load inside a cuTile kernel to access tile data."
)
end

function Base.show(io::IO, arr::TileArray{T,N}) where {T,N}
print(io, "TileArray{$T,$N}($(join(size(arr), "×")))")
end

function Base.show(io::IO, ::MIME"text/plain", arr::TileArray{T,N}) where {T,N}
print(io, join(size(arr), "×"), " TileArray{$T,$N} on GPU")
end

Base.pointer(arr::TileArray{T}) where {T} = arr.ptr

# Return the ArraySpec value (third type parameter) if present
function array_spec(@nospecialize(T::Type{<:TileArray}))
T isa DataType || return nothing # UnionAll types don't have full parameters
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