Re: Making Event work for Win32

Paul Moore <[email protected]> writes:
>I thought I'd look at putting my coding where my mouth is and seeing what would
>be involved in getting Event working on Win32.
>
>Basically, it looks like the necessary changes could be pretty straightforward -
>the system-specific stuff is localised in c/unix_io.c (and a bit in c/signal.c -
>what's rsignal()?) I could probably hash up an IO watcher based on
>MsgWaitForMultipleObjects() -- assuming that I can get from a Perl file object
>to a Win32 HANDLE (I'm pretty sure I can). 

You can:  

long
Lang_OSHandle(fd)
int fd;
{
#ifdef WIN32
 return win32_get_osfhandle(fd);
#else
 return fd;
#endif
}

>But there are two problems there -
>first, Win32 waits on file HANDLEs are "discouraged" (I quote the
>documentation...) - you;re supposed to use asynchronous IO instead. 

But MS's own C "stdio" runtime (which perl currently uses) cannot work with 
asynchronous IO.

-- 
Nick Ing-Simmons <[email protected]>
Via, but not speaking for: Texas Instruments Ltd.