1 // Copyright 2012 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. 4 5 #ifndef BASE_MAC_SCOPED_CFFILEDESCRIPTORREF_H_ 6 #define BASE_MAC_SCOPED_CFFILEDESCRIPTORREF_H_ 7 8 #include <CoreFoundation/CoreFoundation.h> 9 10 #include "base/scoped_generic.h" 11 12 namespace base { 13 namespace mac { 14 15 namespace internal { 16 17 struct ScopedCFFileDescriptorRefTraits { 18 static CFFileDescriptorRef InvalidValue() { return nullptr; } 19 static void Free(CFFileDescriptorRef ref) { 20 CFFileDescriptorInvalidate(ref); 21 CFRelease(ref); 22 } 23 }; 24 25 } // namespace internal 26 27 // ScopedCFFileDescriptorRef is designed after ScopedCFTypeRef<>. On 28 // destruction, it will invalidate the file descriptor. 29 // ScopedCFFileDescriptorRef (unlike ScopedCFTypeRef<>) does not support RETAIN 30 // semantics, copying, or assignment, as doing so would increase the chances 31 // that a file descriptor is invalidated while still in use. 32 using ScopedCFFileDescriptorRef = 33 ScopedGeneric<CFFileDescriptorRef, 34 internal::ScopedCFFileDescriptorRefTraits>; 35 36 } // namespace mac 37 } // namespace base 38 39 #endif // BASE_MAC_SCOPED_CFFILEDESCRIPTORREF_H_ 40
