source of truth https://github.com/lambdageek/mono/tree/mjit/mcs/class/Mono.Compiler
@mazegen because this commit actually happened on [github.com/mono/mono/master](http://github.com/mono/mono/master)
Ah, ok, thanks
the changes for the managed JIT project aren't upstreamed yet, so they live in the mjit branch on lambdageek/mono
Anyway, this commit's message say "Drop JIT attach: use coop attach in mini, aot and interp"
yep, it was removed recently :smile:
it's related to the thread suspension mechanism in mono: Previously we had a preemptive suspension (via posix signals essentially) and we gradually moving forward to a cooperative suspension mechanism (by using safepoints)