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// 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_
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