[squeak-dev] Question about Socket

Hi folks: I am preparing my SqueakDBX talk for ESUG and I am doing some comparisons between a database driver with an external library trough FFI and a native driver. I know FFI locks the VM until the function it is being invoked, finishes. But I don't know what happens with Sockets. Do sockets lock the hole VM until you obtain a response?

Thanks for any light in this field.

Best,

Mariano

Mariano Martinez Peck wrote:
> Hi folks: I am preparing my SqueakDBX talk for ESUG and I am doing some
> comparisons between a database driver with an external library trough
> FFI and a native driver. I know FFI locks the VM until the function it
> is being invoked, finishes. But I don't know what happens with Sockets.
> Do sockets lock the hole VM until you obtain a response?

The socket interfaces are entirely asynchronous, i.e., there is no
blocking. Sockets have semaphores associated with them that are signaled
when anything interesting is happening. Check out methods like
Socket>>sendData: to see how this stuff works together.

Cheers,
   - Andreas