<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Thanks. I’ve used FFI before, and have several references to shared memory on the Mac (other OS’s have similar facilities). The real question is about setting a pointer to the memory used by a Bitmap object.<div><br></div><div>Getting FFI to work with the latest version of Mac OS X is often quite painful due to all the security-related hoops you must jump through to give permission to an app to access libraries outside the app’s own set. I *think* that Apple’s built in shared memory API won’t be as covoluted to use via FFI as other libraries are, but haven’t tested it on Mac OS X 13.x (Ventura).</div><div><br></div><div>The real question is about setting the pointer that a Bitmap (in two or more images) uses. ELiot kindly offered to mentor me through the process of writing plugins. The real question is: am I up for that?</div><div><br></div><div>L</div><div><br><div><blockquote type="cite"><br><br class="Apple-interchange-newline"><div><div id="__MailbirdStyleContent" style="font-size: 10pt; font-family: Arial; text-align: left;" dir="ltr">
Hi --<div><br></div><div>I would use SqueakFFI and through that interface a system library for memory shared between processes. Maybe through memory-mapped files or similar...</div><div><br></div><div></div><div>[URLS deleted to satisfy my malfunctioning ISP mailing system]</div><div><br></div><div>Once you have your ExternalAddress for that shared memory region, you can start reading and writing bytes from multiple Squeak images. Watch out for synchronization/locking etc.</div><div><br></div><div>Best,</div><div>Marcel</div><div class="mb_sig"></div></div></div></blockquote></div><br></div></div></div></body></html>