Nim zmq binding and poll function

[Clonk]

Hello,

I'm trying to use the poll function of the ZMQ (version 4.2) binding. In C (and 
C++) you just pass an allocated array of zmq_pollitems_t and the length.

I tried doing the Nim equivalent :
    
    
    var p1  = cast[ptr TPollItem](alloc0(2*sizeof(TPollItem)))  # Allocate 
memory for 2 TPollItem object
    var p2 = cast[ptr TPollItem](cast[int](p1) + cast[int](sizeof(TPollItem))) 
# Get the start adress of the second object
    p1[] = TPollItem(socket: d1.s, events: ZMQ_POLLIN) # Write first in the 
memory adress
    p2[] = TPollItem(socket: d2.s, events: ZMQ_POLLIN) # Write second object in 
the memory adress
    var res : int = poll(p1, 2, 10000)
    echo res
    if res >= 0 :
        var res1 = bitand(p1.revents, ZMQ_POLLIN.cshort)
        var res2 = bitand(p2.revents, ZMQ_POLLIN.cshort)
        echo "res1:", res1, " && res2:", res2
    
    
    Run

But it only works for the first TPollItem (i can swap the socket used in the 
TPollItem so I know it's not a connexion problem) and I never get a POLLIN flag 
set in p2.

Also, on the same subject, the Nim pollitem are defined as follow : 
    
    
    type
      TPollItem*{.pure, final.} = object
        socket*: PSocket
        fd*: cint
        events*: cshort
        revents*: cshort
        poller*: pointer
    
    proc poll*(items: ptr TPollItem, nitems: cint, timeout: clong): cint{.
      cdecl, importc: "zmq_poll", dynlib: zmqdll.}
    
    
    
    Run

What is the pointer poller ? In C it is just defined as a struct : 
    
    
    typedef struct
    {
        void* //socket//;
        int //fd//;
        short //events//;
        short //revents//;
    } zmq_pollitem_t;
    
    int zmq_poll (zmq_pollitem_t *items, int nitems, long timeout);
    
    
    Run