third_party/WebKit/Source/wtf/ConditionalDestructor.h

   1 // Copyright 2015 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 ConditionalDestructor_h
   6 #define ConditionalDestructor_h
   7
   8 namespace WTF {
   9
  10 // ConditionalDestructor defines the destructor of the derived object.
  11 // This base is used in order to completely avoid creating a destructor
  12 // for an object that does not need to be destructed. By doing so,
  13 // the clang compiler will have correct information about whether or not
  14 // the object has a trivial destructor.
  15 // Note: the derived object MUST release all its recources at the finalize()
  16 // method.
  17 template<typename Derived, bool noDestructor>
  18 class ConditionalDestructor {
  19 public:
  20     ~ConditionalDestructor() { static_cast<Derived*>(this)->finalize(); }
  21 };
  22
  23 template<typename Derived>
  24 class ConditionalDestructor<Derived, true> { };
  25
  26 }
  27
  28 #endif // ConditionalDestructor_h