[L0 v2] Implement urEventWait

Author: igchor

source/adapters/level_zero/v2/api.cpp

@@ -323,12 +323,6 @@ ur_result_t urEventGetProfilingInfo(ur_event_handle_t hEvent,
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-ur_result_t urEventWait(uint32_t numEvents,
-                        const ur_event_handle_t *phEventWaitList) {
-  logger::error("{} function not implemented!", __FUNCTION__);
-  return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
-}
-
 ur_result_t urEventGetNativeHandle(ur_event_handle_t hEvent,
                                    ur_native_handle_t *phNativeEvent) {
   logger::error("{} function not implemented!", __FUNCTION__);

source/adapters/level_zero/v2/event.cpp

@@ -51,4 +51,13 @@ ur_result_t urEventRetain(ur_event_handle_t hEvent) { return hEvent->retain(); }
 ur_result_t urEventRelease(ur_event_handle_t hEvent) {
   return hEvent->release();
 }
+
+ur_result_t urEventWait(uint32_t numEvents,
+                        const ur_event_handle_t *phEventWaitList) {
+  for (uint32_t i = 0; i < numEvents; ++i) {
+    ZE2UR_CALL(zeEventHostSynchronize,
+               (phEventWaitList[i]->getZeEvent(), UINT64_MAX));
+  }
+  return UR_RESULT_SUCCESS;
+}
 } // namespace ur::level_zero