# Preemptive Threading **URL:** \ **Category:** General\ **Created:** [February 28, 2023, 10:15am UTC](https://forum.xojo.com/t/preemptive-threading/74665 "2023-02-28T10:15:58Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![Thomas\_Tempelmann](https://forum.xojo.com/user_avatar/forum.xojo.com/thomas_tempelmann/32/315_2.png) [@Thomas\_Tempelmann](https://forum.xojo.com/u/Thomas_Tempelmann)\ **Post date:** [February 28, 2023, 9:17pm UTC](https://forum.xojo.com/t/preemptive-threading/74665/8 "2023-02-28T21:17:46Z")
I’ve demonstrated the same in pure Xojo code a while ago, too: [http://files.tempel.org/RB/Threading/](http://files.tempel.org/RB/Threading/) and even earlier: > [@Using Grand Central Dispatch (GCD) for preemptive threading](https://forum.xojo.com/t/using-grand-central-dispatch-gcd-for-preemptive-threading/22612): > > I need some non-blocking file operations in my app (“Find Any File”), so I played around a little with GCD. Turns out that with a few declares I can nicely run pre-emptive thread operations via GCD. Of course, there are a few things to consider: Stack overflow checking needs to turned off in the preemptive code (#pragma StackOverflowChecking false). Background tasks need to be disabled in the preemptive code (#pragma DisableBackgroundTasks). All preemptive code must run in global (static) me… --- _[View the full topic](https://forum.xojo.com/t/preemptive-threading/74665)._