[Archit3ch]

Follow-up question: is there a way to "freeze" the GC? As in, I've done all my allocations, now I want to run a main loop uninterrupted, and force clean up inside at_exit().

[moonchild]

If you're not allocating, the gc won't run anyway. If you made a mistake and are allocating where you don't want to be, a gc pause might be preferable to a crash.

[phoe-krk]

Try setting or binding SB-KERNEL:*GC-INHIBIT* to true.

[stassats]

That's a recipe for disaster. Never do that.

[phoe-krk]

Damn, I searched the sources on GitHub for WITHOUT-GC but found nothing; I should have searched for SB-SYS:WITHOUT-GCING which is the actual user-facing interface. Thanks for the correction.

[stassats]

SYS:WITHOUT-GCING is better but is still fraught with danger (that's why I didn't mention it).

[tmtvl]

I think you'll want without-interrupts for that: https://sbcl.org/sbcl-internals/The-deferral-mechanism.html

[stassats]

That's not related to garbage collection.