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authorJacob Erlbeck <jerlbeck@sysmocom.de>2015-10-26 14:39:08 +0100
committerJacob Erlbeck <jerlbeck@sysmocom.de>2015-10-29 01:10:06 +0100
commit80db4ec3875b0de7f06de769881d6c5d4b713f2d (patch)
tree8fc6dfe6d2e035491a11b8c2e1ccb2a815f93d7c
parentc27671c10935ee384d03a87170c3f31ab435da07 (diff)
core: Add difference function to osmo_counter
The osmo_counter_difference returns the counter value difference since the last call of this function with the given counter object. Sponsored-by: On-Waves ehf
-rw-r--r--include/osmocom/core/statistics.h4
-rw-r--r--src/statistics.c8
2 files changed, 12 insertions, 0 deletions
diff --git a/include/osmocom/core/statistics.h b/include/osmocom/core/statistics.h
index a9a623d..1e472ff 100644
--- a/include/osmocom/core/statistics.h
+++ b/include/osmocom/core/statistics.h
@@ -9,6 +9,7 @@ struct osmo_counter {
const char *name; /*!< \brief human-readable name */
const char *description; /*!< \brief humn-readable description */
unsigned long value; /*!< \brief current value */
+ unsigned long previous; /*!< \brief previous value */
};
/*! \brief Increment counter */
@@ -48,3 +49,6 @@ int osmo_counters_for_each(int (*handle_counter)(struct osmo_counter *, void *),
* \returns pointer to counter (\ref osmo_counter) or NULL otherwise
*/
struct osmo_counter *osmo_counter_get_by_name(const char *name);
+
+/*! \brief Return the counter difference since the last call to this function */
+int osmo_counter_difference(struct osmo_counter *ctr);
diff --git a/src/statistics.c b/src/statistics.c
index e28541b..ad069ce 100644
--- a/src/statistics.c
+++ b/src/statistics.c
@@ -74,3 +74,11 @@ struct osmo_counter *osmo_counter_get_by_name(const char *name)
}
return NULL;
}
+
+int osmo_counter_difference(struct osmo_counter *ctr)
+{
+ int delta = ctr->value - ctr->previous;
+ ctr->previous = ctr->value;
+
+ return delta;
+}