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make shared array constructor consistent to array constructor #29930

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ea25984
WIP: make shared array constructor consistent to array constructor
Nov 4, 2018
0dd5e8a
similar returns SharedArray now
Nov 5, 2018
384f403
fix test
Nov 5, 2018
b15ad2d
Merge branch 'master' into roger-patch-2
DilumAluthge Sep 29, 2025
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34 changes: 17 additions & 17 deletions stdlib/SharedArrays/src/SharedArrays.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -102,7 +102,7 @@ beginning of the file.
"""
SharedArray

function SharedArray{T,N}(dims::Dims{N}; init=false, pids=Int[]) where {T,N}
function SharedArray{T,N}(::UndefInitializer, dims::Dims{N}; init=false, pids=Int[]) where {T,N}
isbitstype(T) || throw(ArgumentError("type of SharedArray elements must be bits types, got $(T)"))

pids, onlocalhost = shared_pids(pids)
Expand Down Expand Up @@ -159,18 +159,18 @@ function SharedArray{T,N}(dims::Dims{N}; init=false, pids=Int[]) where {T,N}
S
end

SharedArray{T,N}(I::Integer...; kwargs...) where {T,N} =
SharedArray{T,N}(I; kwargs...)
SharedArray{T}(d::NTuple; kwargs...) where {T} =
SharedArray{T,length(d)}(d; kwargs...)
SharedArray{T}(I::Integer...; kwargs...) where {T} =
SharedArray{T,length(I)}(I; kwargs...)
SharedArray{T}(m::Integer; kwargs...) where {T} =
SharedArray{T,1}(m; kwargs...)
SharedArray{T}(m::Integer, n::Integer; kwargs...) where {T} =
SharedArray{T,2}(m, n; kwargs...)
SharedArray{T}(m::Integer, n::Integer, o::Integer; kwargs...) where {T} =
SharedArray{T,3}(m, n, o; kwargs...)
SharedArray{T,N}(::UndefInitializer, I::Integer...; kwargs...) where {T,N} =
SharedArray{T,N}(undef, I; kwargs...)
SharedArray{T}(::UndefInitializer, d::NTuple; kwargs...) where {T} =
SharedArray{T,length(d)}(undef, d; kwargs...)
SharedArray{T}(::UndefInitializer, I::Integer...; kwargs...) where {T} =
SharedArray{T,length(I)}(undef, I; kwargs...)
SharedArray{T}(::UndefInitializer, m::Integer; kwargs...) where {T} =
SharedArray{T,1}(undef, m; kwargs...)
SharedArray{T}(::UndefInitializer, m::Integer, n::Integer; kwargs...) where {T} =
SharedArray{T,2}(undef, m, n; kwargs...)
SharedArray{T}(::UndefInitializer, m::Integer, n::Integer, o::Integer; kwargs...) where {T} =
SharedArray{T,3}(undef, m, n, o; kwargs...)

function SharedArray{T,N}(filename::AbstractString, dims::NTuple{N,Int}, offset::Integer=0;
mode=nothing, init=false, pids::Vector{Int}=Int[]) where {T,N}
Expand Down Expand Up @@ -562,10 +562,10 @@ function shmem_randn(dims; kwargs...)
end
shmem_randn(I::Int...; kwargs...) = shmem_randn(I; kwargs...)

similar(S::SharedArray, T::Type, dims::Dims) = similar(S.s, T, dims)
similar(S::SharedArray, T::Type) = similar(S.s, T, size(S))
similar(S::SharedArray, dims::Dims) = similar(S.s, eltype(S), dims)
similar(S::SharedArray) = similar(S.s, eltype(S), size(S))
similar(S::SharedArray, T::Type, dims::Dims{N}; pids=S.pids) where N = SharedArray{T, N}(undef, dims; pids=pids)
similar(S::SharedArray{ST, N}, T::Type; pids=S.pids) where {ST, N} = similar(S, T, size(S); pids=pids)
similar(S::SharedArray, dims::Dims; pids=S.pids) = similar(S, eltype(S), dims; pids=pids)
similar(S::SharedArray; pids=S.pids) = similar(S, eltype(S), size(S); pids=pids)

reduce(f, S::SharedArray) =
mapreduce(fetch, f, Any[ @spawnat p reduce(f, S.loc_subarr_1d) for p in procs(S) ])
Expand Down
28 changes: 14 additions & 14 deletions stdlib/SharedArrays/test/runtests.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -16,11 +16,11 @@ id_other = filter(x -> x != id_me, procs())[rand(1:(nprocs()-1))]
dims = (20,20,20)

if Sys.islinux()
S = SharedArray{Int64,3}(dims)
S = SharedArray{Int64,3}(undef, dims)
@test startswith(S.segname, "/jl")
@test !ispath("/dev/shm" * S.segname)

S = SharedArray{Int64,3}(dims; pids=[id_other])
S = SharedArray{Int64,3}(undef, dims; pids=[id_other])
@test startswith(S.segname, "/jl")
@test !ispath("/dev/shm" * S.segname)
end
Expand Down Expand Up @@ -83,7 +83,7 @@ copyto!(s, sdata(d))
a = rand(Float64, dims)
@test sdata(a) == a

d = SharedArray{Int}(dims, init = D->fill!(D.loc_subarr_1d, myid()))
d = SharedArray{Int}(undef, dims, init = D->fill!(D.loc_subarr_1d, myid()))
for p in procs(d)
idxes_in_p = remotecall_fetch(p, d) do D
parentindices(D.loc_subarr_1d)[1]
Expand All @@ -94,7 +94,7 @@ for p in procs(d)
@test d[idxl] == p
end

d = @inferred(SharedArray{Float64,2}((2,3)))
d = @inferred(SharedArray{Float64,2}(undef, (2,3)))
@test isa(d[:,2], Vector{Float64})

### SharedArrays from a file
Expand Down Expand Up @@ -156,16 +156,16 @@ rm(fn); rm(fn2); rm(fn3)
### Utility functions

# construct PR #13514
S = @inferred(SharedArray{Int}((1,2,3)))
S = @inferred(SharedArray{Int}(undef, (1,2,3)))
@test size(S) == (1,2,3)
@test typeof(S) <: SharedArray{Int}
S = @inferred(SharedArray{Int}(2))
S = @inferred(SharedArray{Int}(undef, 2))
@test size(S) == (2,)
@test typeof(S) <: SharedArray{Int}
S = @inferred(SharedArray{Int}(1,2))
S = @inferred(SharedArray{Int}(undef, 1,2))
@test size(S) == (1,2)
@test typeof(S) <: SharedArray{Int}
S = @inferred(SharedArray{Int}(1,2,3))
S = @inferred(SharedArray{Int}(undef, 1,2,3))
@test size(S) == (1,2,3)
@test typeof(S) <: SharedArray{Int}
@test Base.elsize(S) == Base.elsize(typeof(S)) == Base.elsize(Vector{Int})
Expand Down Expand Up @@ -246,12 +246,12 @@ map!(x->1, d, d)
# Shared arrays of singleton immutables
@everywhere struct ShmemFoo end
for T in [Nothing, ShmemFoo]
local s = @inferred(SharedArray{T}(10))
local s = @inferred(SharedArray{T}(undef, 10))
@test T() === remotecall_fetch(x->x[3], workers()[1], s)
end

# Issue #14664
d = SharedArray{Int}(10)
d = SharedArray{Int}(undef, 10)
@sync @distributed for i=1:10
d[i] = i
end
Expand All @@ -261,8 +261,8 @@ for (x,i) in enumerate(d)
end

# complex
sd = SharedArray{Int}(10)
se = SharedArray{Int}(10)
sd = SharedArray{Int}(undef, 10)
se = SharedArray{Int}(undef, 10)
@sync @distributed for i=1:10
sd[i] = i
se[i] = i
Expand All @@ -286,13 +286,13 @@ for id in [id_me, id_other]
finalize_and_test((r=RemoteChannel(id); put!(r, 1); r))
end

d = SharedArray{Int}(10)
d = SharedArray{Int}(undef, 10)
finalize(d)
@test_throws BoundsError d[1]

# Issue 22139
let
aorig = a1 = SharedArray{Float64}((3, 3))
aorig = a1 = SharedArray{Float64}(undef, (3, 3))
a1 = remotecall_fetch(fill!, id_other, a1, 1.0)
@test objectid(aorig) == objectid(a1)
id = a1.id
Expand Down