Added comment

diff --git a/lang/m2/libm2/Processes.def b/lang/m2/libm2/Processes.def
index 0bbac30..aaa81b7 100644 (file)
--- a/lang/m2/libm2/Processes.def
+++ b/lang/m2/libm2/Processes.def
@@ -4,6 +4,12 @@ DEFINITION MODULE Processes;
   From:                "Programming in Modula-2", 3rd, corrected edition, by N. Wirth
   Version:     $Header$
 *)
+(*
+  As discussed in "Unfair Process Scheduling in Modula-2", by
+  D. Hemmendinger, SIGplan Notices Volume 23 nr 3, march 1988,
+  the scheduler in this module is unfair, in that in some circumstances
+  ready-to-run processes never get a turn.
+*)
 
        TYPE SIGNAL;