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40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
// Copyright 2012 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_MAC_SCOPED_CFFILEDESCRIPTORREF_H_
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#define BASE_MAC_SCOPED_CFFILEDESCRIPTORREF_H_
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#include <CoreFoundation/CoreFoundation.h>
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#include "base/scoped_generic.h"
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namespace base {
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namespace mac {
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namespace internal {
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struct ScopedCFFileDescriptorRefTraits {
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static CFFileDescriptorRef InvalidValue() { return nullptr; }
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static void Free(CFFileDescriptorRef ref) {
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CFFileDescriptorInvalidate(ref);
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CFRelease(ref);
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}
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};
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} // namespace internal
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// ScopedCFFileDescriptorRef is designed after ScopedCFTypeRef<>. On
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// destruction, it will invalidate the file descriptor.
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// ScopedCFFileDescriptorRef (unlike ScopedCFTypeRef<>) does not support RETAIN
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// semantics, copying, or assignment, as doing so would increase the chances
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// that a file descriptor is invalidated while still in use.
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using ScopedCFFileDescriptorRef =
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ScopedGeneric<CFFileDescriptorRef,
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internal::ScopedCFFileDescriptorRefTraits>;
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} // namespace mac
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} // namespace base
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#endif // BASE_MAC_SCOPED_CFFILEDESCRIPTORREF_H_
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