apply clang-tidy modernize-use-override

[folly.git] / folly / io / async / EventFDWrapper.h

diff --git a/folly/io/async/EventFDWrapper.h b/folly/io/async/EventFDWrapper.h
index 294d9d37b881a54660d4c2f51442ab6a941e0160..cd985f8e54e7cdc30302d3dbadf3396da3ce066c 100644 (file)
--- a/folly/io/async/EventFDWrapper.h
+++ b/folly/io/async/EventFDWrapper.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,12 +21,24 @@
 
 #pragma once
 
-#include <features.h>
+#ifndef FOLLY_NO_CONFIG
+#include <folly/folly-config.h>
+#endif
+
+#ifdef FOLLY_HAVE_FEATURES_H
+# include <features.h>
+#endif
+
+#if defined(__GLIBC__) && !defined(__APPLE__)
+#if __GLIBC_PREREQ(2, 9)
+# define FOLLY_GLIBC_2_9
+#endif
+#endif
 
 // <sys/eventfd.h> doesn't exist on older glibc versions
-#if (defined(__GLIBC__) && __GLIBC_PREREQ(2, 9))
+#ifdef FOLLY_GLIBC_2_9
 #include <sys/eventfd.h>
-#else /* !(defined(__GLIBC__) && __GLIBC_PREREQ(2, 9)) */
+#else /* !def FOLLY_GLIBC_2_9 */
 
 #include <sys/syscall.h>
 #include <unistd.h>
@@ -37,8 +49,10 @@
 // arch/x86/include/asm/unistd_{32,64}.h
 #ifndef __NR_eventfd2
 #if FOLLY_X64
+/* nolint */
 #define __NR_eventfd2  290
 #elif defined(__i386__)
+/* nolint */
 #define __NR_eventfd2  328
 #else
 #error "Can't define __NR_eventfd2 for your architecture."