Re: [Sqlrelay-discussion] Possible hang at receiveFileDescriptor (rudiments)

[David M. <dav...@fi...>]

Thanks Georgiy,

You are correct, it should be safePoll(120,0,true,false).  Thanks for 
finding that!  I'm committing it to CVS now and the fix will be in the 
next release.

Dave
dav...@fi...

On 05/23/2012 10:39 AM, Georgiy Kirichenko wrote:
>
> Hi,
>
> In some cases sqlr-connection will hang at this call: 
> result=recvmsg(pvt->_fd,&messageheader,0); (filedescriptor.cpp:1876, 
> filedescriptor::receiveFileDescriptor) - this is gdb backtrace.
>
> Before this safePoll(120,0,false,true) is called, but it wait POLLOUT 
> event instead of POLLIN (read(false) and write(true) params). In this 
> case, when sqlr-listener fail before passFileDescriptor, sqlr-connect 
> will hang.
>
> I think, correct call is safePoll(120,0,true,false) - we should wait 
> POLLIN event.
>
> I test this solution, and in my case have no problem.
>
>
>
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