forked from mirrors/linphone-iphone
2ad1f46105
- Create a A Object - Create a B Object - Copy A in B - Delete B - Use L_Q or access public => Crash
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/*
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* clonable-object.cpp
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* Copyright (C) 2010-2017 Belledonne Communications SARL
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "clonable-object-p.h"
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#include "clonable-object.h"
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// =============================================================================
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using namespace std;
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LINPHONE_BEGIN_NAMESPACE
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// -----------------------------------------------------------------------------
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L_OBJECT_IMPL(ClonableObject);
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ClonableObject::ClonableObject (ClonableObjectPrivate &p) {
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setRef(p);
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}
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#define UNREF() \
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do { \
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auto &h = mPrivate->mPublic; \
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h.erase(this); \
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if (h.empty()) \
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delete mPrivate; \
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} while (false);
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ClonableObject::~ClonableObject () {
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UNREF();
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}
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void ClonableObject::setRef (const ClonableObjectPrivate &p) {
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// Q-pointer must exist if private data is defined.
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L_ASSERT(!mPrivate || !mPrivate->mPublic.empty());
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// Nothing, same reference.
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if (&p == mPrivate)
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return;
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// Unref previous private data.
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if (mPrivate)
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UNREF();
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// Add and reference new private data.
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mPrivate = const_cast<ClonableObjectPrivate *>(&p);
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mPrivate->mPublic.insert(this);
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}
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LINPHONE_END_NAMESPACE
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