| 1 | /* std::unique_ptr specializations for GDB. |
| 2 | |
| 3 | Copyright (C) 2016-2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #ifndef COMMON_GDB_UNIQUE_PTR_H |
| 21 | #define COMMON_GDB_UNIQUE_PTR_H |
| 22 | |
| 23 | #include <memory> |
| 24 | |
| 25 | namespace gdb |
| 26 | { |
| 27 | /* Define gdb::unique_xmalloc_ptr, a std::unique_ptr that manages |
| 28 | xmalloc'ed memory. */ |
| 29 | |
| 30 | /* The deleter for std::unique_xmalloc_ptr. Uses xfree. */ |
| 31 | template <typename T> |
| 32 | struct xfree_deleter |
| 33 | { |
| 34 | void operator() (T *ptr) const { xfree (ptr); } |
| 35 | }; |
| 36 | |
| 37 | /* Same, for arrays. */ |
| 38 | template <typename T> |
| 39 | struct xfree_deleter<T[]> |
| 40 | { |
| 41 | void operator() (T *ptr) const { xfree (ptr); } |
| 42 | }; |
| 43 | |
| 44 | /* Import the standard unique_ptr to our namespace with a custom |
| 45 | deleter. */ |
| 46 | |
| 47 | template<typename T> using unique_xmalloc_ptr |
| 48 | = std::unique_ptr<T, xfree_deleter<T>>; |
| 49 | |
| 50 | /* A no-op deleter. */ |
| 51 | template<typename T> |
| 52 | struct noop_deleter |
| 53 | { |
| 54 | void operator() (T *ptr) const { } |
| 55 | }; |
| 56 | |
| 57 | } /* namespace gdb */ |
| 58 | |
| 59 | /* Dup STR and return a unique_xmalloc_ptr for the result. */ |
| 60 | |
| 61 | static inline gdb::unique_xmalloc_ptr<char> |
| 62 | make_unique_xstrdup (const char *str) |
| 63 | { |
| 64 | return gdb::unique_xmalloc_ptr<char> (xstrdup (str)); |
| 65 | } |
| 66 | |
| 67 | #endif /* COMMON_GDB_UNIQUE_PTR_H */ |