[L0 v2] Implement urEventWait

Author: igchor

source/adapters/level_zero/v2/api.cpp

@@ -315,12 +315,6 @@ ur_result_t UR_APICALL urEventGetProfilingInfo(ur_event_handle_t hEvent,
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-ur_result_t UR_APICALL 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 UR_APICALL urEventGetNativeHandle(
     ur_event_handle_t hEvent, ur_native_handle_t *phNativeEvent) {
   logger::error("{} function not implemented!", __FUNCTION__);

source/adapters/level_zero/v2/event.cpp

@@ -52,3 +52,12 @@ UR_APIEXPORT ur_result_t UR_APICALL urEventRetain(ur_event_handle_t hEvent) {
 UR_APIEXPORT ur_result_t UR_APICALL urEventRelease(ur_event_handle_t hEvent) {
   return hEvent->release();
 }
+
+ur_result_t UR_APICALL 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;
+}