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      1 /**
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  * Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
      5  * Copyright (C) 2006 Andrew Wellington (proton (at) 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 
     30 using namespace WTF;
     31 
     32 namespace WebCore {
     33 
     34 #ifndef NDEBUG
     35 static RefCountedLeakCounter bidiRunCounter("BidiRun");
     36 
     37 static bool inBidiRunDestroy;
     38 #endif
     39 
     40 void BidiRun::destroy()
     41 {
     42 #ifndef NDEBUG
     43     inBidiRunDestroy = true;
     44 #endif
     45     RenderArena* renderArena = m_object->renderArena();
     46     delete this;
     47 #ifndef NDEBUG
     48     inBidiRunDestroy = false;
     49 #endif
     50 
     51     // Recover the size left there for us by operator delete and free the memory.
     52     renderArena->free(*reinterpret_cast<size_t*>(this), this);
     53 }
     54 
     55 void* BidiRun::operator new(size_t sz, RenderArena* renderArena) throw()
     56 {
     57 #ifndef NDEBUG
     58     bidiRunCounter.increment();
     59 #endif
     60     return renderArena->allocate(sz);
     61 }
     62 
     63 void BidiRun::operator delete(void* ptr, size_t sz)
     64 {
     65 #ifndef NDEBUG
     66     bidiRunCounter.decrement();
     67 #endif
     68     ASSERT(inBidiRunDestroy);
     69 
     70     // Stash size where destroy() can find it.
     71     *(size_t*)ptr = sz;
     72 }
     73 
     74 }
     75