prio.h
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上传日期:2013-02-24
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- /* $Id$
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
- * Copyright (C) 2000 by Colin Ngam
- */
- #ifndef _ASM_SN_PRIO_H
- #define _ASM_SN_PRIO_H
- /*
- * Priority I/O function prototypes and macro definitions
- */
- typedef long long bandwidth_t;
- /* These should be the same as FREAD/FWRITE */
- #define PRIO_READ_ALLOCATE 0x1
- #define PRIO_WRITE_ALLOCATE 0x2
- #define PRIO_READWRITE_ALLOCATE (PRIO_READ_ALLOCATE | PRIO_WRITE_ALLOCATE)
- extern int prioSetBandwidth (int /* fd */,
- int /* alloc_type */,
- bandwidth_t /* bytes_per_sec */,
- pid_t * /* pid */);
- extern int prioGetBandwidth (int /* fd */,
- bandwidth_t * /* read_bw */,
- bandwidth_t * /* write_bw */);
- extern int prioLock (pid_t *);
- extern int prioUnlock (void);
- /* Error returns */
- #define PRIO_SUCCESS 0
- #define PRIO_FAIL -1
- #endif /* _ASM_SN_PRIO_H */