<div dir="ltr"><div class="gmail_extra">Hi Bert.</div><div class="gmail_extra"><br><div class="gmail_quote">2016-10-04 15:32 GMT+02:00 Bert Freudenberg <span dir="ltr">&lt;<a href="mailto:bert@freudenbergs.de" target="_blank">bert@freudenbergs.de</a>&gt;</span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">In Squeak we have disabled processPreemptionYields to restore proper preemption semantics. That&#39;s why the above loop prevents the UI process from running.</blockquote></div><br>Does &quot;proper preemption semantics&quot; means that after high priority process died (or sleep) <b>previous</b> process continue execution? (if nothing new appears)</div></div>