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#ifndef CYGONCE_KERNEL_KTYPES_H

#define CYGONCE_KERNEL_KTYPES_H

//==========================================================================

//

//      ktypes.h

//

//      Standard types used in the kernel and its interfaces

//

//==========================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos 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 or (at your option) any later      

// version.                                                                 

//

// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,    

// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            

//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

// the GNU General Public License. However the source code for this file    

// must still be made available in accordance with section (3) of the GNU   

// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

// -------------------------------------------                              

// ####ECOSGPLCOPYRIGHTEND####                                              

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   nickg from an original by hmt

// Contributors:  nickg

// Date:        1997-09-08

// Purpose:     Define kernel specific types

// Description: Kernel specific types

// Usage:       #include <cyg/kernel/ktypes.h>

//              ...

//              cyg_priority priority; // etc

//              

//####DESCRIPTIONEND####

//

//==========================================================================

// -------------------------------------------------------------------------

// Check that a configuration file is present.

#ifndef CYGONCE_PKGCONF_KERNEL_H

#error "No Configuration file included"

#endif

// -------------------------------------------------------------------------

#include <cyg/infra/cyg_type.h>

#include <stddef.h>              // for size_t

// -------------------------------------------------------------------------

// Integer types:

typedef cyg_int32       cyg_code;       // General return/error/status code

typedef cyg_count32     cyg_priority;   // priority value

typedef cyg_uint32      cyg_vector;     // vector number/descriptor

typedef cyg_uint64      cyg_tick_count; // clock tick count value

// -------------------------------------------------------------------------

// Predefinitions of various kernel classes

#ifdef __cplusplus

class Cyg_Scheduler;

class Cyg_Scheduler_Implementation;

class Cyg_HardwareThread;

class Cyg_SchedThread;

class Cyg_SchedThread_Implementation;

class Cyg_Thread;

class Cyg_ThreadQueue;

class Cyg_ThreadQueue_Implementation;

#endif

// -------------------------------------------------------------------------

// Class and structure conversion macros.

// CYG_CLASSFROMFIELD translates a pointer to a field of a struct or

// class into a pointer to the class.

// CYG_OFFSETOFBASE yields the offset of a base class of a derived

// class.

// CYG_CLASSFROMBASE translates a pointer to a base class into a pointer

// to a selected derived class. The base class object _must_ be part of

// the specified derived class. This is essentially a poor mans version

// of the RTTI dynamic_cast operator.

// Caveat: These macros do not work for virtual base classes.

#define CYG_CLASSFROMFIELD(_type_,_member_,_ptr_)\

    ((_type_ *)((char *)(_ptr_)-((char *)&(((_type_ *)0)->_member_))))

#ifdef __cplusplus

#define CYG_OFFSETOFBASE(_type_,_base_)\

    ((char *)((_base_ *)((_type_ *)4)) - (char *)4)

# define CYG_CLASSFROMBASE(_class_,_base_,_ptr_)\

    ((_class_ *)((char *)(_ptr_) - CYG_OFFSETOFBASE(_class_,_base_)))

#endif

// -------------------------------------------------------------------------

#endif // CYGONCE_KERNEL_KTYPES_H

// EOF ktypes.h