swap.h
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上传日期:2009-04-28
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- /* Calls to enable and disable swapping on specified locations. Linux version.
- Copyright (C) 1996, 1998, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library 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
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #ifndef _SYS_SWAP_H
- #define _SYS_SWAP_H 1
- #include <features.h>
- /* The swap priority is encoded as:
- (prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK
- */
- #define SWAP_FLAG_PREFER 0x8000 /* Set if swap priority is specified. */
- #define SWAP_FLAG_PRIO_MASK 0x7fff
- #define SWAP_FLAG_PRIO_SHIFT 0
- __BEGIN_DECLS
- /* Make the block special device PATH available to the system for swapping.
- This call is restricted to the super-user. */
- extern int swapon (__const char *__path, int __flags) __THROW;
- /* Stop using block special device PATH for swapping. */
- extern int swapoff (__const char *__path) __THROW;
- __END_DECLS
- #endif /* _SYS_SWAP_H */