RE: asyn driver on Windows XP

["Mark Rivers" <rivers@cars.uchicago.edu>]

Dirk,
 
I'll add that to the asyn known problems.  Does VS 10 have the same problem with the header file as VS Express 2008 that Anthony Owen discovered?
 
Mark
 

________________________________

From: Dirk Zimoch [mailto:dirk.zimoch@psi.ch]
Sent: Tue 11/16/2010 4:00 AM
To: Eric Norum
Cc: EPICS Techtalk; Mark Rivers
Subject: Re: asyn driver on Windows XP



Compiling asyn with make USR_CFLAGS=/D_WIN32_WINNT=0x0500 solves the
problem. I have no idea why _WIN32_WINNT is set to something >= 0x0600
(=Vista).

Dirk

Eric Norum wrote:
> The conditionals in drvAsynIPPort.c were supposed to handle this case:
>
> #if defined(__rtems__)
> # define USE_SOCKTIMEOUT
> #else
> # define USE_POLL
> # if defined(vxWorks)
> #  define FAKE_POLL
> # elif defined(_WIN32)
> #  if defined(POLLIN)
> #   define poll(fd,nfd,t) WSAPoll(fd,nfd,t)
> #  else
> #   define FAKE_POLL
> #  endif
> # else
> #  include <sys/poll.h>
> # endif
> #endif
>
> The intent was to use WSAPoll() only on versions of windows which provided it (and defined POLLIN).   Could it be that XP defines POLLIN but doesn't provide WSAPoll()?
> What happens if you compile this with -UPOLLIN added to the CFLAGS?  If that doesn't help, try adding a '#undef POLLIN' just before the block of conditionals.    If t either of those fix the problem we'll have to figure out some other set of conditionals for Windows.
>
>
> On Nov 15, 2010, at 8:57 AM, Dirk Zimoch wrote:
>
>> Hi all,
>>
>> I have a problem with the latest version of asyn driver on Windows XP. It tries to use a function WSAPoll() that does not exist in XP, only in Vista and newer. However I do not want use an old version of asyn driver without that function because of all the new features and bugfixes.
>>
>> The code in question is:
>>
>> #if defined(__rtems__)
>> # define USE_SOCKTIMEOUT
>> #else
>> # define USE_POLL
>> # if defined(vxWorks)
>> #  define FAKE_POLL
>> # elif defined(_WIN32)
>> #  if defined(POLLIN)
>> #   define poll(fd,nfd,t) WSAPoll(fd,nfd,t)
>> #  else
>> #   define FAKE_POLL
>> #  endif
>> # else
>> #  include <sys/poll.h>
>> # endif
>> #endif
>>
>> It seems I have POLLIN defined but no WSAPoll.
>>
>> I am using the compiler from Visual Studio 10.
>>
>> Any idea?
>>
>> Dirk
>