Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Mon, 15 Nov 2010 11:06:59 -0600

Hi Dirk,

A similar problem has been seen by other users when using Microsoft
Visual C++ 2008 Express Edition.

The problem turned out to be apparently an error in Microsoft's header
file.  Here is a message from Anthony Owen at the Australian Synchrotron
with his fix.

*******************************************************************
Hi Mark,

It turns out that the issue was with the Microsoft SDK. The SDK is
installed as part of the Visual Studio Package.

I tried SDK 6.0V and SDK 7.0 and got the same problem. It was narrowed
down to be the version being incorrectly detected in the file:

C:\Program Files\Microsoft SDKs\Windows\v7.0\Include\sdkddkver.h

<snip>

#if !defined(_WIN32_WINNT) && !defined(_CHICAGO_)
#define  _WIN32_WINNT   0x0601
#endif

<snip>

It was defining 0x0601 which appears to be Windows 7.
With this changed to 0x0503 (Windows XP SP3) and ASYN reverted to its
original form, POLLIN is not defined and ASYN uses FAKE_POLL.
It compiled and executed successfully.

Hope this helps if you have to use Visual Express!

Best Regards,

Anthony Owen
*******************************************************************

So the header file was incorrectly setting the system version to be
0x0601, which is Windows 7, even though it was an XP system.  That then
caused POLLIN to be defined when it should not have been.

Is there a similar problem in Visual Studio 10?

Mark

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dirk Zimoch
Sent: Monday, November 15, 2010 10:58 AM
To: EPICS
Subject: asyn driver on Windows XP

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

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System