1 files changed, 67 insertions, 0 deletions
diff --git a/gdbsupport/gdb_unique_ptr.h b/gdbsupport/gdb_unique_ptr.h
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index 00000000000..5e383b9db3f
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+++ b/gdbsupport/gdb_unique_ptr.h
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+/* std::unique_ptr specializations for GDB.
+
+   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef COMMON_GDB_UNIQUE_PTR_H
+#define COMMON_GDB_UNIQUE_PTR_H
+
+#include <memory>
+
+namespace gdb
+{
+/* Define gdb::unique_xmalloc_ptr, a std::unique_ptr that manages
+   xmalloc'ed memory.  */
+
+/* The deleter for std::unique_xmalloc_ptr.  Uses xfree.  */
+template <typename T>
+struct xfree_deleter
+{
+  void operator() (T *ptr) const { xfree (ptr); }
+};
+
+/* Same, for arrays.  */
+template <typename T>
+struct xfree_deleter<T[]>
+{
+  void operator() (T *ptr) const { xfree (ptr); }
+};
+
+/* Import the standard unique_ptr to our namespace with a custom
+   deleter.  */
+
+template<typename T> using unique_xmalloc_ptr
+  = std::unique_ptr<T, xfree_deleter<T>>;
+
+/* A no-op deleter.  */
+template<typename T>
+struct noop_deleter
+{
+  void operator() (T *ptr) const { }
+};
+
+} /* namespace gdb */
+
+/* Dup STR and return a unique_xmalloc_ptr for the result.  */
+
+static inline gdb::unique_xmalloc_ptr<char>
+make_unique_xstrdup (const char *str)
+{
+  return gdb::unique_xmalloc_ptr<char> (xstrdup (str));
+}
+
+#endif /* COMMON_GDB_UNIQUE_PTR_H */