Re: Non-blocking Reads from Pipe Filehandle

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Re^2: Non-blocking Reads from Pipe Filehandle (WaitForMult...) by tye (Sage) on Jun 13, 2007 at 22:28 UTC
Probably use one or more sub from Win32::IPC: `use Win32::IPC qw( wait_any wait_all WaitForMultipleObjects INFINITE );` [download] - tye	[reply] [d/l]
Re^3: Non-blocking Reads from Pipe Filehandle (WaitForMult...) by ysth (Canon) on Jun 13, 2007 at 22:33 UTC
Yes, I saw that, but didn't see an interface that allowed you to specify a handle. I found the doc a little confusing, both for Win32::IPC and its subclasses.	[reply]
Re^4: Non-blocking Reads from Pipe Filehandle (Win32::IPC) by tye (Sage) on Jun 13, 2007 at 22:47 UTC
I assumed worst case was use of Win32API::File's GetOsFHandle(). But diving into the XS code I see that the module is about as poorly designed as any. As is all too common for XS modules and Win32:: modules especially, it has way too much XS code that can only handle the very narrowest of types of input. sigh If you pass it an object that "isa" subclass of Win32::Process, then it will call the object's get_process_handle() method. If you pass it an object that "isa" subclass of Win32::IPC, then it expects that to be a ref to a scalar containing the integer handle value. So you could probably get away with something like: `my $handle= bless \GetOsFHandle(*PIPE), "Win32::IPC";` [download] which is pretty ugly and likely to break at some future date. - tye	[reply] [d/l]