On 02 October 2004 13:04, Tomasz Zielonka wrote:

On Fri, Oct 01, 2004 at 09:34:36PM +0100, Simon Marlow wrote:

...

Not currently, but I could probably implement the equivalent (hGetArrayNonBlocking).

It is perhaps not closely related, but could we also have Network.Socket recvFrom / sendTo working on raw buffers?

I've attached a proposed implementation. It moves most of code to recvBufFrom and sendBufTo, and changes recvFrom / sendTo to use the *Buf* functions.

Committed, thanks!

It would be nice if these functions could be used to implement efficient recvFromArray / sendToArray (without copying), but I don't know if it's possible to get the pointer from MutableByteArray. Is there a danger that GC invalidates the pointer?

It is possible to get a Ptr from a MutableByteArray, but only if the array was allocated pinned, and only if you make sure it lives across any foreign calls (using touch#). This is how Foreign.alloca works, for example. Cheers, Simon