debug

qjs_wrapper.c

@@ -265,6 +265,17 @@ static JSValue js_drone_init(JSContext *ctx, JSValueConst thisVal,
     return JS_UNDEFINED;
 }
 
+static void print_queue(StrQueue *pQueue) {
+  struct strNode *current;
+  int i = 0;
+  current = pQueue->head;
+  while (current != NULL) {
+    printf("index %d str %s\n", i, current->str);
+    current = current->next;
+    i++;
+  }
+}
+
 static JSValue readDroneDataStr(JSContext *ctx, StrQueue *pQueue, bool keepAtLeastAnElement)
 {
     JSValue res;
@@ -277,15 +288,18 @@ static JSValue readDroneDataStr(JSContext *ctx, StrQueue *pQueue, bool keepAtLea
             pQueue->head = current->next;
             delete_str_node(current);
         } else {
-            pQueue->tail = NULL;
             if (!keepAtLeastAnElement) {
-                pQueue->head = NULL;
+                pQueue->head = (pQueue->tail = NULL);
                 delete_str_node(current);
             }
         }
     } else {
         res = JS_NewString(ctx, "");
     }
+    if (keepAtLeastAnElement) {
+      printf("Queue after reading\n");
+      print_queue(pQueue);
+    }
     return res;
 }
 
@@ -335,6 +349,8 @@ static void addStrToQueue(const char *str, StrQueue *pQueue)
         pQueue->tail->next = newNode;
         pQueue->tail = newNode;
     }
+    printf("Queue after addition\n");
+    print_queue(pQueue);
 }
 
 static JSValue add_jsstr_to_queue(JSContext *ctx, JSValueConst jsStr,
@@ -527,6 +543,9 @@ static void pubsub_update_variables(UA_UInt32 id, const UA_DataValue *var, bool
             }
             return;
         } else if (pubsubIdsArray[i].message == id) {
+            if ((*(UA_String*) var->value.data).length == 0) {
+              printf("It is a NULL string from %d\n", s->id);
+            }
             setDroneDataStr(var->value.data, &(s->receiveMessageQueue));
             return;
         } else if (pubsubIdsArray[i].log == id) {