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50315b2177
This adds a new gdb_ref_ptr.h, that implements a reference-counting smart pointer class, where the user of the class supplies a reference-counting policy object. This class will be used in the next patch, which changes most explicit BFD reference counts to use this new type. Meanwhile, this patch changes gdbpy_ref to be a specialization of this new class. This change required adding new nullptr_t overloads some operators in gdb_ref_ptr.h. I suspect this was needed because some Python header redefines NULL, but I'm not certain. 2017-01-10 Tom Tromey <tom@tromey.com> * common/gdb_ref_ptr.h: New file. * python/py-ref.h (struct gdbpy_ref_policy): New. (gdbpy_ref): Now a typedef.
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* Python reference-holding class
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Copyright (C) 2016 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_PYTHON_REF_H
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#define GDB_PYTHON_REF_H
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#include "common/gdb_ref_ptr.h"
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/* A policy class for gdb::ref_ptr for Python reference counting. */
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struct gdbpy_ref_policy
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{
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static void incref (PyObject *ptr)
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{
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Py_INCREF (ptr);
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}
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static void decref (PyObject *ptr)
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{
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Py_DECREF (ptr);
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}
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};
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/* A gdb::ref_ptr that has been specialized for Python objects. */
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typedef gdb::ref_ptr<PyObject, gdbpy_ref_policy> gdbpy_ref;
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#endif /* GDB_PYTHON_REF_H */
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