Move JLArray to a subpackage (#418)

Co-authored-by: Tim Besard <tim.besard@gmail.com>

Author: mcabbott

lib/JLArrays/LICENSE.md

@@ -0,0 +1,23 @@
+The MIT License (MIT)
+
+Copyright © 2016 Simon Danisch
+
+Copyright © 2018 JuliaGPU developers
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

lib/JLArrays/Project.toml

@@ -0,0 +1,14 @@
+name = "JLArrays"
+uuid = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
+authors = ["Tim Besard <tim.besard@gmail.com>"]
+version = "0.1.0"
+
+[deps]
+Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
+GPUArrays = "0c68f7d7-f131-5f86-a1c3-88cf8149b2d7"
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+
+[compat]
+Adapt = "2.0, 3.0"
+GPUArrays = "8.4.1"
+julia = "1.6"

lib/JLArrays/README.md

@@ -0,0 +1,26 @@
+# JLArrays.jl
+
+This package serves as a reference implementation for [GPUArrays.jl](https://github.com/JuliaGPU/GPUArrays.jl),
+running on the CPU. It was used internally for tests, and is now a registered sub-package to enable easier use
+in testing other packages.
+
+```julia
+julia> using JLArrays
+[ Info: Precompiling JLArrays [27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb]
+
+julia> jl(ones(3)) .+ 1
+3-element JLArray{Float64, 1}:
+ 2.0
+ 2.0
+ 2.0
+
+julia> ans[2] 
+┌ Warning: Performing scalar indexing on task Task (runnable) @0x0000000108fc4010.
+│ Invocation of getindex resulted in scalar indexing of a GPU array.
+│ This is typically caused by calling an iterating implementation of a method.
+│ Such implementations *do not* execute on the GPU, but very slowly on the CPU,
+│ and therefore are only permitted from the REPL for prototyping purposes.
+│ If you did intend to index this array, annotate the caller with @allowscalar.
+└ @ GPUArraysCore ~/.julia/packages/GPUArraysCore/rSIl2/src/GPUArraysCore.jl:81
+2.0
+```

test/jlarray.jl renamed to lib/JLArrays/src/JLArrays.jl

@@ -1,6 +1,7 @@
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

test/Project.toml

@@ -1,14 +1,20 @@
-using GPUArrays, Test
+using GPUArrays, Test, Pkg
 
 include("testsuite.jl")
 
 @testset "JLArray" begin
-    include("jlarray.jl")
-    using .JLArrays
+    # install the JLArrays subpackage in a temporary environment
+    old_project = Base.active_project()
+    Pkg.activate(; temp=true)
+    Pkg.develop(path=joinpath(dirname(@__DIR__), "lib", "JLArrays"))
+
+    using JLArrays
 
     jl([1])
 
     TestSuite.test(JLArray)
+
+    Pkg.activate(old_project)
 end
 
 @testset "Array" begin