Added KDE3 version of kvirc

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kvirc@1095341 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 96 insertions, 0 deletions

diff --git a/src/kvilib/core/kvi_heapobject.cpp b/src/kvilib/core/kvi_heapobject.cpp
new file mode 100644
index 00000000..7568086d
--- /dev/null
+++ b/src/kvilib/core/kvi_heapobject.cpp
@@ -0,0 +1,96 @@
+//=============================================================================
+//
+//   File : kvi_heapobject.cpp
+//   Created on Wed 24 Mar 2004 04:45:17 by Szymon Stefanek
+//
+//   This file is part of the KVIrc IRC client distribution
+//   Copyright (C) 2004-2006 Szymon Stefanek <pragma at kvirc dot net>
+//
+//   This program is FREE software. You can redistribute it and/or
+//   modify it under the terms of the GNU General Public License
+//   as published by the Free Software Foundation; either version 2
+//   of the License, or (at your opinion) any later version.
+//
+//   This program is distributed in the HOPE that it will be USEFUL,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//   See the GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program. If not, write to the Free Software Foundation,
+//   Inc. ,51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+//=============================================================================
+
+#define __KVILIB__
+
+
+#include "kvi_heapobject.h"
+#include "kvi_malloc.h"
+
+// On windows we need to override new and delete operators
+// to ensure that always the right new/delete pair is called for an object instance
+// This bug jumps out because windows uses a local heap for each
+// executable module (exe or dll).
+// (this is a well known bug described in Q122675 of MSDN)
+
+// on Linux it is not needed: there is a single global heap
+
+
+
+// 05.02.2005 : scalar/vector deleting destructors in modules
+//
+// There are also other issues involving the MSVC compiler.
+// When the operator new is called on an object with a virtual
+// destructor the compiler generates a helper function
+// called "vector deleting destructor" that is used to both
+// free the object's memory and call the object's destructor.
+// (In fact there is also a "scalar deleting destructor" but
+// MSVC seems to call the vector version also for scalar deletes ?!?)
+// The problem arises when operator new is called in a module:
+// the helper function gets stuffed in one of the module's sections
+// and when the module is unloaded any attempt to delete
+// the object will simply jump into no man's land.
+
+// An "unhandled exception" in a "call [%eax]" corresponding
+// to a delete <pointer> may be a symptom of this problem.
+
+// I haven't been able to find a solution nicer than having
+// a static allocation function in each class that can be
+// created from inside a module and destroyed anywhere else
+// and has a virtual destructor.
+
+#ifdef COMPILE_ON_WINDOWS
+	void * KviHeapObject::operator new(size_t uSize)
+	{
+		return kvi_malloc(uSize);
+	}
+	
+	void KviHeapObject::operator delete(void * pData)
+	{
+		kvi_free(pData);
+	}
+
+	void * KviHeapObject::operator new[](size_t uSize)
+	{
+		return kvi_malloc(uSize);
+	}
+	
+	void KviHeapObject::operator delete[](void * pData)
+	{
+		kvi_free(pData);
+	}
+
+	// these are the debug versions...
+	void * KviHeapObject::operator new(size_t uSize,const char *,int)
+	{
+		return kvi_malloc(uSize);
+	}
+	
+	void KviHeapObject::operator delete(void * pData,const char *,int)
+	{
+		kvi_free(pData);
+	}
+#endif
+
+