SC: Add page customization functionality.

include/jemalloc/internal/sc.h

@@ -297,6 +297,12 @@ struct sc_data_s {
 
 extern sc_data_t sc_data_global;
 void sc_data_init(sc_data_t *data);
+/*
+ * Updates slab sizes in [begin, end] to be pgs pages in length, if possible.
+ * Otherwise, does its best to accomodate the request.
+ */
+void sc_data_update_slab_size(sc_data_t *data, size_t begin, size_t end,
+    int pgs);
 void sc_boot();
 
 #endif /* JEMALLOC_INTERNAL_SC_H */