[L0] Added wait function to prevent race condition with urEventWait

Signed-off-by: Winston Zhang <[email protected]>

Author: winstonzhang-intel

source/adapters/level_zero/event.cpp

@@ -9,10 +9,12 @@
 //===----------------------------------------------------------------------===//
 
 #include <algorithm>
+#include <chrono>
 #include <climits>
 #include <mutex>
 #include <optional>
 #include <string.h>
+#include <thread>
 
 #include "command_buffer.hpp"
 #include "common.hpp"
@@ -823,6 +825,9 @@ urEventWait(uint32_t NumEvents, ///< [in] number of events in the event list
           Queues.insert(Q);
         }
       }
+      // Added to prevent race condition when using counter-based events.
+      if (Event->CounterBasedEventsEnabled)
+        std::this_thread::sleep_for(std::chrono::nanoseconds(1));
     }
   }