On 1/27/16 8:43 , Nathan Huff wrote:
> Is there anyway to list the currently associated objects on an event port?
>
> I am trying to debug an issue that I think is caused by a program thinking
> it has an fd associated with an event port when it really isn't. I know
> what the program thinks is associated, but I don't see an easy way to get
> what the kernel actually has associated.
There's no great way to do this. I'd suggest firing up mdb -k and
starting with something like 0t<pid>::pid2proc | ::pfiles. From there
grab the vnode and do something like:
> ffffff0331050000::print vnode_t v_data | ::print port_t
port_queue.portq_pcp[]
port_queue.portq_pp = {
port_queue.portq_pcp->pc_lock = {
_opaque = [ 0 ]
}
port_queue.portq_pcp->pc_lclosecv = {
_opaque = 0
}
port_queue.portq_pcp->pc_hash = 0xffffff0332218800
port_queue.portq_pcp->pc_hashsize = 0x100
port_queue.portq_pcp->pc_fdcount = 0x5
}
With that in hand, you can walk the hash and print the struct polldat
which should give you some of the information that you want.
I hope that this give you a useful starting point.
Robert
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