FileShare read on ActionScript 3?

i'm starting an application with flash and ActionScript 3.

I'm opening a file for writing, but the process locks the file on the disk, so no other process can read it. I'd like to make it so that others process can read it too.

I googled it and searched in ad开发者_如何学Cobe doc, but found nothing.

Is it possible to allow other process to read an opened file in AS3 ?

Thanks