security/sandbox/chromium/base/scoped_clear_errno.h@7e26c7da4463
security/sandbox/chromium/base/scoped_clear_errno.h
Wed, 31 Dec 2014 06:55:50 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:55:50 +0100
- changeset 2
- 7e26c7da4463
- permissions
- -rw-r--r--
Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2
1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef BASE_SCOPED_CLEAR_ERRNO_H_
6 #define BASE_SCOPED_CLEAR_ERRNO_H_
8 #include <errno.h>
10 #include "base/basictypes.h"
12 namespace base {
14 // Simple scoper that saves the current value of errno, resets it to 0, and on
15 // destruction puts the old value back.
16 class ScopedClearErrno {
17 public:
18 ScopedClearErrno() : old_errno_(errno) {
19 errno = 0;
20 }
21 ~ScopedClearErrno() {
22 if (errno == 0)
23 errno = old_errno_;
24 }
26 private:
27 const int old_errno_;
29 DISALLOW_COPY_AND_ASSIGN(ScopedClearErrno);
30 };
32 } // namespace base
34 #endif // BASE_SCOPED_CLEAR_ERRNO_H_
