lib: Add event_inc_int()

This can be useful when updating counter fields.

diff --git a/src/lib/lib-event.c b/src/lib/lib-event.c
index 416e6b56dd962d15106521218691261844a28925..dd331e9040378da91156d64facd63528a239d506 100644 (file)
--- a/src/lib/lib-event.c
+++ b/src/lib/lib-event.c
@@ -419,6 +419,19 @@ event_add_int(struct event *event, const char *key, intmax_t num)
        return event;
 }
 
+struct event *
+event_inc_int(struct event *event, const char *key, intmax_t num)
+{
+       struct event_field *field;
+
+       field = event_find_field_int(event, key);
+       if (field == NULL || field->value_type != EVENT_FIELD_VALUE_TYPE_INTMAX)
+               return event_add_int(event, key, num);
+
+       field->value.intmax += num;
+       return event;
+}
+
 struct event *
 event_add_timeval(struct event *event, const char *key,
                  const struct timeval *tv)

diff --git a/src/lib/lib-event.h b/src/lib/lib-event.h
index cd4a84abdb2f831e364a9ccd9df7434462b30b92..aeb56ac686d78e43a1f5f681bc597b7a5b662d05 100644 (file)
--- a/src/lib/lib-event.h
+++ b/src/lib/lib-event.h
@@ -167,6 +167,10 @@ struct event *
 event_add_str(struct event *event, const char *key, const char *value);
 struct event *
 event_add_int(struct event *event, const char *key, intmax_t num);
+/* Increase the key's value. If it's not set or isn't an integer type,
+   initialize the value to num. */
+struct event *
+event_inc_int(struct event *event, const char *key, intmax_t num);
 struct event *
 event_add_timeval(struct event *event, const char *key,
                  const struct timeval *tv);