Support for dumping of statistics.

src/server/cache.h

@@ -225,3 +225,16 @@ free_all_cache(void);
  */
 void
 cache_limit_size(void);
+
+/*
+ * Dump cache statistics.
+ */
+
+void
+dump_cache_stats(FILE *stat_file);
+
+/*
+ * Dump memory usage.
+ */
+void
+dump_cache_mem_useage(FILE *stat_file);