From c0d032e91b6ec21bcf60b04b5cfcc393700560a9 Mon Sep 17 00:00:00 2001
From: hreintke <hreintke@tauri.nl>
Date: Mon, 8 Jun 2020 17:25:55 +0200
Subject: [PATCH] API change to faciliate executer to know the number of active
 callbacks

---
 cores/esp8266/CallBackList.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cores/esp8266/CallBackList.h b/cores/esp8266/CallBackList.h
index 187c86c2ad..8d419cbb89 100644
--- a/cores/esp8266/CallBackList.h
+++ b/cores/esp8266/CallBackList.h
@@ -64,7 +64,7 @@ class CallBackList
 	}
 
     template<typename... Args>
-    void execute(Args... params) {
+    int execute(Args... params) {
         for(auto it = std::begin(callBackEventList); it != std::end(callBackEventList); ) {
         	CallBackHandler &handler = *it;
             if (handler->allowRemove() && handler.unique()) {
@@ -75,6 +75,7 @@ class CallBackList
                 ++it;
             }
         }
+        return callBackEventList.size();
     }
 };