1/**
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
5 * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library 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 GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB.  If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 *
22 */
23
24#include "config.h"
25#include "BidiRun.h"
26#include "InlineBox.h"
27#include "RenderArena.h"
28#include <wtf/RefCountedLeakCounter.h>
29#include <wtf/StdLibExtras.h>
30
31using namespace WTF;
32
33namespace WebCore {
34
35DEFINE_DEBUG_ONLY_GLOBAL(RefCountedLeakCounter, bidiRunCounter, ("BidiRun"));
36
37#ifndef NDEBUG
38static bool inBidiRunDestroy;
39#endif
40
41void BidiRun::destroy()
42{
43#ifndef NDEBUG
44    inBidiRunDestroy = true;
45#endif
46    RenderArena* renderArena = m_object->renderArena();
47    delete this;
48#ifndef NDEBUG
49    inBidiRunDestroy = false;
50#endif
51
52    // Recover the size left there for us by operator delete and free the memory.
53    renderArena->free(*reinterpret_cast<size_t*>(this), this);
54}
55
56void* BidiRun::operator new(size_t sz, RenderArena* renderArena)
57{
58#ifndef NDEBUG
59    bidiRunCounter.increment();
60#endif
61    return renderArena->allocate(sz);
62}
63
64void BidiRun::operator delete(void* ptr, size_t sz)
65{
66#ifndef NDEBUG
67    bidiRunCounter.decrement();
68#endif
69    ASSERT(inBidiRunDestroy);
70
71    // Stash size where destroy() can find it.
72    *(size_t*)ptr = sz;
73}
74
75}
76