include/o3tl/make_shared.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #ifndef INCLUDED_O3TL_MAKE_SHARED_HXX
  11 #define INCLUDED_O3TL_MAKE_SHARED_HXX
  12
  13 #include <o3tl/deleter.hxx>
  14 #include <memory>
  15 #include <type_traits>
  16
  17 namespace o3tl
  18 {
  19 /** Allocate an array stored in a shared_ptr, calling operator delete[].
  20     Note that this is only allowed for arithmetic types because shared_ptr
  21     implicitly converts to sub-types.
  22  */
  23 template <typename T> std::shared_ptr<T> make_shared_array(size_t const size)
  24 {
  25     static_assert(std::is_arithmetic<T>::value, "only arrays of arithmetic types allowed");
  26     return std::shared_ptr<T>(new T[size], std::default_delete<T[]>());
  27 }
  28
  29 /** To markup std::shared_ptr that coverity warns might throw exceptions
  30     which won't throw in practice, or where std::terminate is
  31     an acceptable response if they do
  32 */
  33 template <class T, class... Args> std::shared_ptr<T> make_shared(Args&&... args)
  34 {
  35 #if defined(__COVERITY__)
  36     return std::shared_ptr<T>(new T(std::forward<Args>(args)...), o3tl::default_delete<T>());
  37 #else
  38     return std::make_shared<T>(std::forward<Args>(args)...);
  39 #endif
  40 }
  41
  42 } // namespace o3tl
  43
  44 #endif // INCLUDED_O3TL_MAKE_SHARED_HXX
  45
  46 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */