errno.h

来自「ecos实时嵌入式操作系统」· C头文件 代码 · 共 99 行

#ifndef CYGONCE_ERROR_ERRNO_H
#define CYGONCE_ERROR_ERRNO_H
/*========================================================================
//
//      errno.h
//
//      ISO C errno variable and constants
//
//========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, 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.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     jlarmour
// Contributors:  jlarmour
// Date:          2000-04-14
// Purpose:       This file provides the errno variable (or more strictly
//                expression) required by ISO C and POSIX 1003.1
// Description: 
// Usage:         Do not include this file directly - use #include <errno.h>
//
//####DESCRIPTIONEND####
//
//======================================================================*/

/* CONFIGURATION */

#include <pkgconf/error.h>         /* Configuration header */

#ifdef CYGPKG_ERROR_ERRNO

/* INCLUDES */

#include <cyg/error/codes.h>       /* for Cyg_ErrNo */

#ifdef __cplusplus
extern "C" {
#endif

/* FUNCTION PROTOTYPES */


#ifdef CYGSEM_ERROR_PER_THREAD_ERRNO

extern Cyg_ErrNo *
cyg_error_get_errno_p( void ) __attribute__((const));

#endif /* ifdef CYGSEM_ERROR_PER_THREAD_ERRNO */


/* VARIABLES */

#ifdef CYGSEM_ERROR_PER_THREAD_ERRNO
# define errno (*cyg_error_get_errno_p())  /* Per-thread error status */
#else
extern Cyg_ErrNo errno;                /* Global error status */
#endif /* ifdef CYGSEM_ERROR_PER_THREAD_ERRNO */

#ifdef __cplusplus
}   /* extern "C" */
#endif

#endif /* ifdef CYGPKG_ERROR_ERRNO */

#endif /* CYGONCE_ERROR_ERRNO_H multiple inclusion protection */

/* EOF errno.h */