In case that we flushed everything already, we can immeidately return NULL.
Signed-off-by: Liran Schour <lir...@il.ibm.com>
---
ovsdb/monitor.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/ovsdb/monitor.c b/ovsdb/monitor.c
index 5ae9cdb..1a07f19 100644
--- a/ovsdb/monitor.c
+++ b/ovsdb/monitor.c
@@ -733,6 +733,10 @@ ovsdb_monitor_get_update(struct ovsdb_monitor *dbmon,
uint64_t prev_txn = *unflushed;
uint64_t next_txn = dbmon->n_transactions + 1;
+ if (prev_txn == next_txn) {
+ return NULL;
+ }
+
/* Return a clone of cached json if one exists. Otherwise,
* generate a new one and add it to the cache. */
cache_node = ovsdb_monitor_json_cache_search(dbmon, version, prev_txn);
--
2.1.4
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