disallow running benchmarks with xdebug enabled

Author: martinsik

benchmark/run.php

@@ -10,6 +10,12 @@
 use Rx\Observable;
 use Rx\Observer\CallbackObserver;
 
+// Check whether XDebug is enabled
+if (in_array('Xdebug', get_loaded_extensions(true))) {
+    printf("Please, disable Xdebug extension before running RxPHP benchmarks.\n");
+    exit(1);
+}
+
 define('MIN_TOTAL_DURATION', 5);
 $start = microtime(true);