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+;; simple slab allocator. Intended only to carve out isolated memory for
+;; different threads/routines as they request.
+
+(on-init
+  ((Root_allocator_pointer location) <- literal 1000)  ; 1-1000 reserved
+)
+
+(init-fn new
+  ((2 integer-address) <- copy (Root_allocator_pointer integer))
+  ((3 integer) <- literal 1)
+  ((Root_allocator_pointer integer) <- add (Root_allocator_pointer integer) (3 integer))
+  (reply (2 integer-address)))
+; tests to express:
+; every call increments the pointer
+; no other function can increment the pointer
+; no later clause can increment the pointer after this base clause
+; multiple threads/routines can't call the allocator at once