hipStreamSynchronize can skip marker if stream is empty (#1667)

[ROCm/hip commit: 3a7eb694f5]
2019-11-19 09:42:43 -08:00
parent f55b1cd6a4
commit 492248ef12
1 changed files with 2 additions and 0 deletions
@@ -310,6 +310,8 @@ void ihipStream_t::locked_wait() {
    hc::completion_future marker;
    {
        LockedAccessor_StreamCrit_t crit(_criticalData);
+        // skipping marker since stream is empty
+        if (crit->_av.get_is_empty()) return;
        marker = crit->_av.create_marker(hc::no_scope);
    }