// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_SCOPED_CLEAR_ERRNO_H_
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#define BASE_SCOPED_CLEAR_ERRNO_H_
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#include <errno.h>
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#include "base/macros.h"
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namespace base {
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// Simple scoper that saves the current value of errno, resets it to 0, and on
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// destruction puts the old value back.
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class ScopedClearErrno {
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public:
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ScopedClearErrno() : old_errno_(errno) {
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errno = 0;
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}
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~ScopedClearErrno() {
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if (errno == 0)
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errno = old_errno_;
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}
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private:
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const int old_errno_;
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DISALLOW_COPY_AND_ASSIGN(ScopedClearErrno);
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};
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} // namespace base
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#endif // BASE_SCOPED_CLEAR_ERRNO_H_
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