00001 /* vim: set sw=4 sts=4 et foldmethod=syntax : */ 00002 00003 /* 00004 * Copyright (c) 2007, 2008 Ciaran McCreesh 00005 * 00006 * This file is part of the Paludis package manager. Paludis is free software; 00007 * you can redistribute it and/or modify it under the terms of the GNU General 00008 * Public License version 2, as published by the Free Software Foundation. 00009 * 00010 * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY 00011 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00012 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 00013 * details. 00014 * 00015 * You should have received a copy of the GNU General Public License along with 00016 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple 00017 * Place, Suite 330, Boston, MA 02111-1307 USA 00018 */ 00019 00020 #ifndef PALUDIS_GUARD_PALUDIS_UTIL_MAKE_SHARED_PTR_FWD_HH 00021 #define PALUDIS_GUARD_PALUDIS_UTIL_MAKE_SHARED_PTR_FWD_HH 1 00022 00023 #include <paludis/util/attributes.hh> 00024 #include <tr1/memory> 00025 00026 /** \file 00027 * Forward declarations for paludis/make_shared_ptr.hh . 00028 * 00029 * \ingroup g_utils 00030 */ 00031 00032 namespace paludis 00033 { 00034 /** 00035 * Convenience function for creating a std::tr1::shared_ptr<> from a newly 00036 * constructed object. 00037 * 00038 * Use this only with <code>new T_(whatever)</code> as the parameter. Do not 00039 * use it to try to create a std::tr1::shared_ptr<> from something that is not 00040 * newly allocated. 00041 * 00042 * \ingroup g_utils 00043 */ 00044 template <typename T_> 00045 std::tr1::shared_ptr<T_> 00046 make_shared_ptr(T_ * const t) PALUDIS_ATTRIBUTE((warn_unused_result)); 00047 00048 struct NullSharedPtr; 00049 00050 /** 00051 * Return an object that can convert itself to an empty 00052 * std::tr1::shared_ptr<> of any type. 00053 * 00054 * \ingroup g_utils 00055 * \since 0.32 00056 */ 00057 inline NullSharedPtr make_null_shared_ptr() PALUDIS_ATTRIBUTE((warn_unused_result)) PALUDIS_VISIBLE; 00058 } 00059 00060 #endif