statistics: Introduce 'struct counter' instead of using unsigned long
This has the advantage that counters can be added all over the code
very easily, while having only one routine that stores all of the
current counter values to the database. The counters are synced
every 60 seconds, providing relatively fine grained statistics
about the network usage as time passes by.
diff --git a/openbsc/include/openbsc/statistics.h b/openbsc/include/openbsc/statistics.h
new file mode 100644
index 0000000..9291a8c
--- /dev/null
+++ b/openbsc/include/openbsc/statistics.h
@@ -0,0 +1,30 @@
+#ifndef _STATISTICS_H
+#define _STATISTICS_H
+
+struct counter {
+ struct llist_head list;
+ const char *name;
+ const char *description;
+ unsigned long value;
+};
+
+static inline void counter_inc(struct counter *ctr)
+{
+ ctr->value++;
+}
+
+static inline unsigned long counter_get(struct counter *ctr)
+{
+ return ctr->value;
+}
+
+static inline void counter_reset(struct counter *ctr)
+{
+ ctr->value = 0;
+}
+
+struct counter *counter_alloc(const char *name);
+void counter_free(struct counter *ctr);
+int counters_store_db(void);
+
+#endif /* _STATISTICS_H */