mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 06:16:30 +03:00
35 lines
740 B
C
35 lines
740 B
C
|
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
#ifndef BASE_SCOPED_CLEAR_ERRNO_H_
|
||
|
|
#define BASE_SCOPED_CLEAR_ERRNO_H_
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
#include "base/macros.h"
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
// Simple scoper that saves the current value of errno, resets it to 0, and on
|
||
|
|
// destruction puts the old value back.
|
||
|
|
class ScopedClearErrno {
|
||
|
|
public:
|
||
|
|
ScopedClearErrno() : old_errno_(errno) {
|
||
|
|
errno = 0;
|
||
|
|
}
|
||
|
|
~ScopedClearErrno() {
|
||
|
|
if (errno == 0)
|
||
|
|
errno = old_errno_;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
const int old_errno_;
|
||
|
|
|
||
|
|
DISALLOW_COPY_AND_ASSIGN(ScopedClearErrno);
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace base
|
||
|
|
|
||
|
|
#endif // BASE_SCOPED_CLEAR_ERRNO_H_
|