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Reuse CuArrays.libcudnn #12

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Reuse CuArrays.libcudnn #12

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20 changes: 9 additions & 11 deletions src/init.jl
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Original file line number Diff line number Diff line change
@@ -1,12 +1,9 @@


const toolkit = CUDAapi.find_toolkit()
const libcudnn = CUDAapi.find_library("cudnn", toolkit)
const libcudnn = CuArrays.libcudnn
const Cptr = Ptr{Void}

macro cuda(lib,fun,x...) # give an error if library missing, or if error code!=0
if Libdl.find_library(["lib$lib"], []) != ""
fx = Expr(:call, :ccall, ("$fun","lib$lib"), :UInt32, x...)
if libcudnn ≠ nothing
fx = Expr(:call, :ccall, ("$fun",libcudnn), :UInt32, x...)
msg = "$lib.$fun error "
err = gensym()
# esc(:(if ($err=$fx) != 0; warn($msg, $err); Base.show_backtrace(STDOUT, backtrace()); end))
Expand All @@ -17,8 +14,8 @@ macro cuda(lib,fun,x...) # give an error if library missing, or if error
end

macro cuda1(lib,fun,x...) # return -1 if library missing, error code if run
if Libdl.find_library(["lib$lib"], []) != ""
fx = Expr(:call, :ccall, ("$fun","lib$lib"), :UInt32, x...)
if libcudnn ≠ nothing
fx = Expr(:call, :ccall, ("$fun",libcudnn), :UInt32, x...)
err = gensym()
esc(:($err=$fx; @gs; $err))
else
Expand All @@ -32,7 +29,7 @@ const CUDNN_VERSION = Ref{Int}(-1)

function cudnn_version()
if CUDNN_VERSION[] == -1
CUDNN_VERSION[] = Int(ccall((:cudnnGetVersion,:libcudnn),Csize_t,()))
CUDNN_VERSION[] = Int(ccall((:cudnnGetVersion,libcudnn),Csize_t,()))
end
return CUDNN_VERSION[]
end
Expand All @@ -46,7 +43,7 @@ function cudnn_create_handle()
handleP = Cptr[0]
@cuda(cudnn, cudnnCreate, (Ptr{Cptr},), handleP)
handle = handleP[1]
atexit(()->@cuda(cudnn,cudnnDestroy,(Cptr,), handle))
atexit(()->@cuda(cudnn,cudnnDestroy,(Cptr,), handle))
return handle
end

Expand All @@ -55,7 +52,8 @@ end
function cudnnhandle()
if isempty(CUDNN_HANDLES)
handle = cudnn_create_handle()
push!(CUDNN_HANDLES, handle)
push!(CUDNN_HANDLES, handle)
end
return CUDNN_HANDLES[1]
end