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3666a04883
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/* Base class of intrusively reference-counted objects.
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Copyright (C) 2017-2021 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 COMMON_REFCOUNTED_OBJECT_H
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#define COMMON_REFCOUNTED_OBJECT_H
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/* Base class of intrusively reference-countable objects.
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Incrementing and decrementing the reference count is an external
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responsibility. */
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class refcounted_object
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{
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public:
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refcounted_object () = default;
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/* Increase the refcount. */
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void incref ()
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{
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gdb_assert (m_refcount >= 0);
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m_refcount++;
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}
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/* Decrease the refcount. */
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void decref ()
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{
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m_refcount--;
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gdb_assert (m_refcount >= 0);
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}
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int refcount () const { return m_refcount; }
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private:
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DISABLE_COPY_AND_ASSIGN (refcounted_object);
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/* The reference count. */
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int m_refcount = 0;
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};
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/* A policy class to interface gdb::ref_ptr with a
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refcounted_object. */
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struct refcounted_object_ref_policy
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{
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static void incref (refcounted_object *ptr)
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{
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ptr->incref ();
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}
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static void decref (refcounted_object *ptr)
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{
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ptr->decref ();
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}
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};
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#endif /* COMMON_REFCOUNTED_OBJECT_H */
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