54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Name: wx/recguard.h
|
||
|
|
// Purpose: declaration and implementation of wxRecursionGuard class
|
||
|
|
// Author: Vadim Zeitlin
|
||
|
|
// Modified by:
|
||
|
|
// Created: 14.08.2003
|
||
|
|
// RCS-ID: $Id: recguard.h 29243 2004-09-21 18:15:59Z ABX $
|
||
|
|
// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
|
||
|
|
// Licence: wxWindows licence
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#ifndef _WX_RECGUARD_H_
|
||
|
|
#define _WX_RECGUARD_H_
|
||
|
|
|
||
|
|
#include "wx/defs.h"
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
// wxRecursionGuardFlag is used with wxRecursionGuard
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
typedef int wxRecursionGuardFlag;
|
||
|
|
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
// wxRecursionGuard is the simplest way to protect a function from reentrancy
|
||
|
|
// ----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
class WXDLLIMPEXP_BASE wxRecursionGuard
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
wxRecursionGuard(wxRecursionGuardFlag& flag)
|
||
|
|
: m_flag(flag)
|
||
|
|
{
|
||
|
|
m_isInside = flag++ != 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
~wxRecursionGuard()
|
||
|
|
{
|
||
|
|
wxASSERT_MSG( m_flag > 0, _T("unbalanced wxRecursionGuards!?") );
|
||
|
|
|
||
|
|
m_flag--;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool IsInside() const { return m_isInside; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
wxRecursionGuardFlag& m_flag;
|
||
|
|
|
||
|
|
// true if the flag had been already set when we were created
|
||
|
|
bool m_isInside;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // _WX_RECGUARD_H_
|
||
|
|
|