131 lines
3 KiB
C
131 lines
3 KiB
C
|
//#---------------------------------------------------------------
|
||
|
|
// File: CDescrip.h
|
||
|
|
//
|
||
|
|
// Synopsis: Header for the CDescriptor class
|
||
|
|
//
|
||
|
|
// Copyright (C) 1995 Microsoft Corporation
|
||
|
|
// All rights reserved.
|
||
|
|
//
|
||
|
|
// Authors: HowardCu
|
||
|
|
//----------------------------------------------------------------
|
||
|
|
|
||
|
|
#ifndef _CDECRIPTOR_H_
|
||
|
|
#define _CDECRIPTOR_H_
|
||
|
|
|
||
|
|
#define AVAIL_SIGNATURE (DWORD)'daeD'
|
||
|
|
#define DEFAULT_SIGNATURE (DWORD)'Defa'
|
||
|
|
|
||
|
|
typedef enum _DESCRIPTOR_STATE_TYPE
|
||
|
|
{
|
||
|
|
DESCRIPTOR_FREE,
|
||
|
|
DESCRIPTOR_INUSE,
|
||
|
|
} DESCRIPTOR_STATE_TYPE;
|
||
|
|
|
||
|
|
#include "dbgtrace.h"
|
||
|
|
|
||
|
|
class CPool;
|
||
|
|
|
||
|
|
void InitializeUniqueIDs( void );
|
||
|
|
void TerminateUniqueIDs( void );
|
||
|
|
|
||
|
|
class CDescriptor
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
CDescriptor( DWORD dwSig );
|
||
|
|
~CDescriptor( void );
|
||
|
|
|
||
|
|
inline DWORD GetSignature( void );
|
||
|
|
inline DWORD GetUniqueObjectID( void );
|
||
|
|
inline DESCRIPTOR_STATE_TYPE GetState( void );
|
||
|
|
|
||
|
|
private:
|
||
|
|
//
|
||
|
|
// Structure signature
|
||
|
|
//
|
||
|
|
const DWORD m_dwSignature;
|
||
|
|
//
|
||
|
|
// unique object identifier assigned from a static DWORD that is
|
||
|
|
// updated with each new object being marked, In_use.
|
||
|
|
//
|
||
|
|
DWORD m_dwUniqueObjectID;
|
||
|
|
//
|
||
|
|
// the object state
|
||
|
|
//
|
||
|
|
DESCRIPTOR_STATE_TYPE m_eState;
|
||
|
|
//
|
||
|
|
// pointer to a generic reference item (the membership pool)
|
||
|
|
//
|
||
|
|
#ifdef DEBUG
|
||
|
|
inline void IsValid( void );
|
||
|
|
#else
|
||
|
|
void IsValid( void ) { return; }
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Function: GetSignature
|
||
|
|
//
|
||
|
|
// Returns: the current descriptor signature
|
||
|
|
//
|
||
|
|
// History: HowardCu Created 8 May 1995
|
||
|
|
// t-alexwe cleaned up param checking 19 Jun 1995
|
||
|
|
// t-alexwe inlined 27 Jun 1995
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------
|
||
|
|
inline DWORD CDescriptor::GetSignature(void)
|
||
|
|
{
|
||
|
|
return m_dwSignature;
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Function: GetUniqueObjectID
|
||
|
|
//
|
||
|
|
// Returns: the current object ID
|
||
|
|
//
|
||
|
|
// History: HowardCu Created 8 May 1995
|
||
|
|
// t-alexwe cleaned up param checking 19 Jun 1995
|
||
|
|
// t-alexwe inlined 27 Jun 1995
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------
|
||
|
|
inline DWORD CDescriptor::GetUniqueObjectID(void)
|
||
|
|
{
|
||
|
|
IsValid();
|
||
|
|
return m_dwUniqueObjectID;
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Function: GetState
|
||
|
|
//
|
||
|
|
// Returns: the current descriptor state
|
||
|
|
//
|
||
|
|
// History: HowardCu Created 8 May 1995
|
||
|
|
// t-alexwe cleaned up param checking 19 Jun 1995
|
||
|
|
// t-alexwe inlined 27 Jun 1995
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------
|
||
|
|
inline DESCRIPTOR_STATE_TYPE CDescriptor::GetState(void)
|
||
|
|
{
|
||
|
|
IsValid();
|
||
|
|
return m_eState;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// this function only exists in debug builds and does parameter
|
||
|
|
// checking on many of the member variable for the CDescriptor class.
|
||
|
|
//
|
||
|
|
#ifdef DEBUG
|
||
|
|
inline void CDescriptor::IsValid()
|
||
|
|
{
|
||
|
|
_ASSERT( m_dwSignature != AVAIL_SIGNATURE );
|
||
|
|
_ASSERT( m_dwUniqueObjectID != 0l );
|
||
|
|
_ASSERT( m_eState == DESCRIPTOR_INUSE );
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif //!_CDECRIPTOR_H_
|