office-gobmx/embedserv/source/inprocserv/smartpointer.hxx
2011-02-06 13:43:35 +01:00

185 lines
3.9 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
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*
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*
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*
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
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*
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#ifndef _INPROCSERV_SMARTPOINTER_HXX_
#define _INPROCSERV_SMARTPOINTER_HXX_
namespace inprocserv{
void WriteDebugInfo( DWORD pThis, char* pString, DWORD nToWrite );
template< class T > class ComSmart
{
T* m_pInterface;
void OwnRelease()
{
if ( m_pInterface )
{
T* pInterface = m_pInterface;
m_pInterface = NULL;
pInterface->Release();
}
}
public:
ComSmart()
: m_pInterface( NULL )
{}
ComSmart( const ComSmart<T>& rObj )
: m_pInterface( rObj.m_pInterface )
{
if ( m_pInterface != NULL )
m_pInterface->AddRef();
}
ComSmart( T* pInterface )
: m_pInterface( pInterface )
{
if ( m_pInterface != NULL )
m_pInterface->AddRef();
}
~ComSmart()
{
OwnRelease();
}
ComSmart& operator=( const ComSmart<T>& rObj )
{
OwnRelease();
m_pInterface = rObj.m_pInterface;
if ( m_pInterface != NULL )
m_pInterface->AddRef();
return *this;
}
ComSmart<T>& operator=( T* pInterface )
{
OwnRelease();
m_pInterface = pInterface;
if ( m_pInterface != NULL )
m_pInterface->AddRef();
return *this;
}
operator T*() const
{
return m_pInterface;
}
T& operator*() const
{
return *m_pInterface;
}
T** operator&()
{
OwnRelease();
m_pInterface = NULL;
return &m_pInterface;
}
T* operator->() const
{
return m_pInterface;
}
BOOL operator==( const ComSmart<T>& rObj ) const
{
return ( m_pInterface == rObj.m_pInterface );
}
BOOL operator!=( const ComSmart<T>& rObj ) const
{
return ( m_pInterface != rObj.m_pInterface );
}
BOOL operator==( const T* pInterface ) const
{
return ( m_pInterface == pInterface );
}
BOOL operator!=( const T* pInterface ) const
{
return ( m_pInterface != pInterface );
}
};
class CSGuard
{
CRITICAL_SECTION* m_pCriticalSection;
public:
CSGuard( CRITICAL_SECTION* pCS )
: m_pCriticalSection( pCS )
{
if ( m_pCriticalSection )
EnterCriticalSection( m_pCriticalSection );
}
~CSGuard()
{
if ( m_pCriticalSection )
LeaveCriticalSection( m_pCriticalSection );
}
};
class ULONGGuard
{
ULONG* m_pValue;
public:
ULONGGuard( ULONG* pValue )
: m_pValue( pValue )
{
if ( m_pValue )
(*m_pValue)++;
}
~ULONGGuard()
{
if ( m_pValue )
(*m_pValue)--;
}
};
} // namespace inprocserv
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */