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 */ 68