include/o3tl/deleter.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_DELETER_HXX
  11 #define INCLUDED_O3TL_DELETER_HXX
  12
  13 #include <sal/config.h>
  14
  15 #include <cstdlib>
  16
  17 #include <com/sun/star/uno/Exception.hpp>
  18 #include <sal/log.hxx>
  19
  20 namespace o3tl
  21 {
  22 /** To markup std::unique_ptr that coverity warns might throw exceptions
  23     which won't throw in practice, or where std::terminate is
  24     an acceptable response if they do
  25 */
  26 template <typename T> struct default_delete
  27 {
  28     void operator()(T* p) noexcept
  29     {
  30 #if defined(__COVERITY__)
  31         try
  32         {
  33             delete p;
  34         }
  35         catch (const css::uno::Exception& ex)
  36         {
  37             SAL_WARN("vcl.app", "Fatal exception: " << exceptionToString(ex));
  38             std::terminate();
  39         }
  40         catch (const std::exception& e)
  41         {
  42             SAL_WARN("vcl.app", "Fatal exception: " << e.what());
  43             std::terminate();
  44         }
  45 #else
  46         delete p;
  47 #endif
  48     }
  49 };
  50
  51 struct free_delete
  52 {
  53     void operator()(void* p) { std::free(p); }
  54 };
  55
  56 template <typename uniqueptr> void reset_preserve_ptr_during(uniqueptr& ptr)
  57 {
  58     // HACK: for the case where the dtor of the obj held by ptr will trigger
  59     // functions which expect ptr to still be set during the dtor.
  60     // e.g. SdrObject::GetBroadcaster() is called during the destructor
  61     // in SdrEdgeObj::Notify(). So delete first, then clear the pointer
  62     delete ptr.get();
  63     (void)ptr.release();
  64 }
  65 }
  66
  67 #endif
  68
  69 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */