Does not work with Julia 1.4

[sjoelund]

The following works fine in Julia 1.1, but 1.4 refuses to start:

import OMJulia
om=OMJulia.OMCSession()
OMJulia.sendExpression(om, "1+1")

[arun3688]

@sjoelund I tested with julia 1.4.2 , it is working, should i check for version julia 1.4 ?

[sjoelund]

1.4.2 hangs for me as well. I get:

WARNING: Compat.Sys is deprecated, use Base.Sys instead.
  likely near REPL[2]:1
OMJulia.OMCSession(...)

And

martin   15722  0.0  0.0 319768 20252 pts/5    Sl+  14:56   0:00 omc --interactive=zmq +z=julia.5Q6UlM8rg7

But then nothing happens. The log-file just says:

tcp://127.0.0.1:43427

So I guess there is something not working with ZeroMQ

[arun3688]

@sjoelund I am not even getting such warnings in windows.

i updated all the packages and tested it.

[sjoelund]

I also updated my packages and tested with 1.4.2 again :)

[sjoelund]

If I update to OMJulia#master I also don't get that warning. But it still hangs...

[arun3688]

@sjoelund , I was able to reproduce the problem in linux, i found the problem related to hanging, It is the "Parser" module which takes too long for the first time compilation, and not the ZMQ, the ZMQ is working fine . I did some trials in the dev server and found the following

Without disabling Parser module:

>> using OMJulia
>> omc= OMJulia.OMCSession()
>> sendExpression(omc, "1+1")  // waited for 10 minutes approximately, got the results back , Sometimes it takes longer than 10 minutes for the first time compliation

After disabling Parser module:

#return Parser.parseOM(unsafe_string(message))

>> using OMJulia
>> omc= OMJulia.OMCSession()
>> sendExpression(omc, "1+1")  //  not hanging, got the results immediately 

For some reasons this is not happening in windows, You can try this and see, It is the parser module which causes the hanging

[sjoelund]

https://gist.github.com/sjoelund/af90649890dec720cb9d7aab58c3a196

[martin@mega src]$ time julia-1.4.2 -O0 test.jl 
Any[2]

real    0m1,148s
user    0m1,155s
sys     0m0,367s
[martin@mega src]$ time julia-1.4.2 -O1 test.jl 
Any[2]

real    0m37,918s
user    0m37,624s
sys     0m0,475s

$ time julia-1.4.2 test.jl  
Any[2]

real    12m6,189s
user    11m53,341s
sys     0m1,267s

What are the times on that file in Windows? (Running from command-line)
If it's very different from Linux I guess we should make a bug report to Julia.

[arun3688]

I got the following measurements

arupa54@win00085 MINGW64 /c/OPENMODELICAGIT/OpenModelica/OMJulia.jl/src (master)
$ time julia lexertest.jl
Any[2]
  0.000088 seconds (21 allocations: 130.945 KiB)

real    0m3.958s
user    0m0.000s
sys     0m0.015s

arupa54@win00085 MINGW64 /c/OPENMODELICAGIT/OpenModelica/OMJulia.jl/src (master)
$ time julia lexertest.jl
Any[2]
  0.000092 seconds (21 allocations: 130.945 KiB)

real    0m3.851s
user    0m0.015s
sys     0m0.000s

arupa54@win00085 MINGW64 /c/OPENMODELICAGIT/OpenModelica/OMJulia.jl/src (master)
$ time julia lexertest.jl
Any[2]
  0.000125 seconds (21 allocations: 130.945 KiB)

real    0m4.055s
user    0m0.000s
sys     0m0.015s

[sjoelund]

From Slack

arupa54@win00085 MINGW64 /c/OPENMODELICAGIT/OpenModelica/OMJulia.jl/src (master)
$ time julia -O0 lexertest.jl
Any[2]
  0.000160 seconds (21 allocations: 130.945 KiB)
real    0m1.093s
user    0m0.015s
sys     0m0.015s
arupa54@win00085 MINGW64 /c/OPENMODELICAGIT/OpenModelica/OMJulia.jl/src (master)
$ time julia -O1 lexertest.jl
Any[2]
  0.000114 seconds (21 allocations: 130.945 KiB)
real    0m3.868s
user    0m0.000s
sys     0m0.015s
arupa54@win00085 MINGW64 /c/OPENMODELICAGIT/OpenModelica/OMJulia.jl/src (master)
$ time julia lexertest.jl
Any[2]
  0.000145 seconds (21 allocations: 130.945 KiB)
real    0m3.976s
user    0m0.015s
sys     0m0.015s

[sjoelund]

Should be fixed by #38