Hi Phil,
your first mail contains the following snippet from boa:
if (select(OPEN_MAX, &block_read_fdset,
Check if the actual value of OPEN_MAX is larger than
fdset can hold, which may well be platform dependent.
Most efficient would be to use highest_used_fd+1,
if this is handy, or else I'll cite Richard Stevens' famous book
"Advanced Programming in the Unix Environment" (must have IMHO):
"We could just set the first argument to FD_SETSIZE ..."
at the bottom of p398 in the 7th printing 1994.
Bye, Heribert ([EMAIL PROTECTED])
> -----Original Message-----
> From: Phil Dempster [SMTP:[EMAIL PROTECTED]]
> Sent: Friday, September 21, 2001 09:55
> To: [EMAIL PROTECTED]
> Subject: Re: Cygwin 1.3.3: Win2K: select() returning EBADF (causes
> thrashing in Boa)
>
> > The obvious question is why is boa sending a bad fd to select?
>
> My apologies; I omitted to mention that the behaviour differs from the
> same
> code compiled under Linux, where select() correctly blocks.
>
> As far as I can determine, there is nothing wrong with the file
> descriptor.
> Both block_read_fdset and block_write_fdset are zeroed at initialisation
> (using the FD_ZERO macro). The server's listening socket is set (using
> FD_SET) in block_read_fdset. select() does not block and returns
> immediately with errno==EBADF.
>
> > What thoughts were you expecting? You obviously need to debug the code.
>
> I was wondering if there any known issues with the Cygwin implementation
> of
> select(), given that the underlying Microsoft Winsock function does not
> map
> entirely cleanly to the Berkley implementation. Your response indicates
> that there are no known issues ;-)
>
> Cheers,
> Phil.
>
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