doc/hacker-guide/runtime.tex

   1 \chap{The runtime}{runtime}
   2
   3 There are multiple, possibly orthogonal issues.  Limit checks and garbage
   4 collections are a little overloaded in their roles, because they also
   5 support preemptive thread switching and interupt handling.  Forcing
   6 frontier to be 0 and hitting a limit check (even a zero byte limit check)
   7 will invoke the GC, which will switch to the pending thread.
   8
   9 Recall that a limit check with bytes = 0 really means a check for LIMIT\_SLOP
  10 bytes (currently LIMIT\_SLOP = 512).