__hscore_open from HsBase.h

[Bulat Ziganshin]

Hello Simon,

Tuesday, November 14, 2006, 11:57:37 AM, you wrote:

>> #ifdef mingw32_HOST_OS
>>         if ((how & O_WRONLY) || (how & O_RDWR) || (how & O_APPEND))
>>           return _sopen(file,how,_SH_DENYRW,mode);
>>         else
>>           return _sopen(file,how,_SH_DENYWR,mode);
>> #else
>>         return open(file,how,mode);
>> #endif

> I haven't seen this code before, but I wonder if it's an attempt to implement
> the single-writer multiple-reader locking semantics in the Haskell 98 IO library?

so, the first question: WHO wrote this? may be SOF?

and second question: HOW this may help this semantics?? in my
investigation, simple 'open' is just fine - it prevents writing by other
processes to the file being written by Haskell program and it allow to
read and write open by other processes of the file that i only read.
may be it was problems on old windowses? and may be this some bug and
this should be rewritten as DENY_WRITE and DENY_NONE, correspondingly

btw, what is a semantics on Unix? is it the same as i mentioned above?

i hope to fix this at least in Streams library so please help me
understand what is a better plan

-- 
Best regards,
 Bulat                            mailto:Bulat.Ziganshin at gmail.com