blob: 06c2dddf23cbc3671b265b4a3d608bd14ab416d1 (
plain) (
tree)
|
|
/***
*file2.h - auxiliary file structure used internally by file run-time routines
*
* Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file defines the auxiliary file structure used internally by
* the file run time routines.
* [Internal]
*
*Revision History:
* 06-29-87 JCR Removed _OLD_IOLBF/_OLD_IOFBF and associated lbuf macro.
* 09-28-87 JCR Added _iob_index(); modified ybuf() and tmpnum() to use it.
* 06-03-88 JCR Added _iob2_ macro; modified ybuf()/tmpnum()/_iob_index;
* also padded FILE2 definition to be the same size as FILE.
* 06-10-88 JCR Added ybuf2()/bigbuf2()/anybuf2()
* 06-14-88 JCR Added (FILE *) casts to _iob_index() macro
* 06-29-88 JCR Added _IOFLRTN bit (flush stream on per routine basis)
* 08-18-88 GJF Revised to also work with the 386 (small model only).
* 12-05-88 JCR Added _IOCTRLZ bit (^Z encountered by lowio read)
* 04-11-89 JCR Removed _IOUNGETC bit (no longer needed)
* 07-27-89 GJF Cleanup, now specific to the 386. Struct field
* alignment is now protected by pack pragma.
* 10-30-89 GJF Fixed copyright
* 02-16-90 GJF _iob[], _iob2[] merge
* 02-21-90 GJF Restored _iob_index() macro
* 02-28-90 GJF Added #ifndef _INC_FILE2 stuff. Also, removed some
* (now) useless preprocessor directives.
* 07-11-90 SBM Added _IOCOMMIT bit (lowio commit on fflush call)
* 03-11-92 GJF Removed _tmpnum() macro for Win32.
* 06-03-92 KRS Added extern "C" stuff.
* 02-23-93 SKS Update copyright to 1993
*
****/
#ifndef _INC_FILE2
#ifdef __cplusplus
extern "C" {
#endif
/* Additional _iobuf[]._flag values */
#define _IOYOURBUF 0x0100
#define _IOFEOF 0x0800
#define _IOFLRTN 0x1000
#define _IOCTRLZ 0x2000
#define _IOCOMMIT 0x4000
/* Macro for getting _iob[] index */
#define _iob_index(s) ((FILE *)(s) - (FILE *)_iob)
/* General use macros */
#define inuse(s) ((s)->_flag & (_IOREAD|_IOWRT|_IORW))
#define mbuf(s) ((s)->_flag & _IOMYBUF)
#define nbuf(s) ((s)->_flag & _IONBF)
#define ybuf(s) ((s)->_flag & _IOYOURBUF)
#define bigbuf(s) ((s)->_flag & (_IOMYBUF|_IOYOURBUF))
#define anybuf(s) ((s)->_flag & (_IOMYBUF|_IONBF|_IOYOURBUF))
#ifdef _CRUISER_
#define _tmpnum(s) ((s)->__tmpnum)
#endif /* _CRUISER_ */
#ifdef __cplusplus
}
#endif
#define _INC_FILE2
#endif /* _INC_FILE2 */
|
