#ifndef CYGONCE_LIBC_STDIO_STDIOFILES_HXX
#define CYGONCE_LIBC_STDIO_STDIOFILES_HXX
//========================================================================
//
//      stdiofiles.hxx
//
//      ISO C library stdio central file access
//
//========================================================================
// ####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     
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// version.                                                                 
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// 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):     jlarmour
// Contributors:  
// Date:          2000-04-19
// Purpose:     
// Description: 
// Usage:         #include <cyg/libc/stdio/stdiosupp.hxx>
//
//####DESCRIPTIONEND####
//
//========================================================================

// CONFIGURATION

#include <pkgconf/libc_stdio.h>    // libc stdio configuration

// INCLUDES

#include <cyg/infra/cyg_type.h>          // cyg_bool, cyg_ucount8, cyg_ucount16
#include <cyg/libc/stdio/stream.hxx>     // Cyg_StdioStream

#ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS
# include <cyg/kernel/mutex.hxx>   // mutexes
#endif

// CLASSES

class Cyg_libc_stdio_files
{
    // List of open files - global for now
    static
    Cyg_StdioStream *files[FOPEN_MAX];

# ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS
    // lock for the above
    static
    Cyg_Mutex files_lock;
# endif

public:

# if FOPEN_MAX < 256
    typedef cyg_ucount8 fd_t;
# else
    typedef cyg_ucount16 fd_t;
# endif

    static Cyg_StdioStream *
    get_file_stream( fd_t fd );

    static void
    set_file_stream( fd_t fd, Cyg_StdioStream *stream );


    // the following functions lock(), trylock() and unlock() do nothing
    // if we haven't got thread-safe streams
    static cyg_bool
    lock(void);

    static cyg_bool
    trylock(void);

    static void
    unlock(void);
    
}; // class Cyg_libc_stdio_files


// Inline functions for this class
#include <cyg/libc/stdio/stdiofiles.inl>

#endif // CYGONCE_LIBC_STDIO_STDIOFILES_HXX multiple inclusion protection

// EOF stdiofiles.hxx