resource.h
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上传日期:2009-04-28
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- /* Copyright (C) 1992,94,1996-2000,2002,2004 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_RESOURCE_H
- #define _SYS_RESOURCE_H 1
- #include <features.h>
- /* Get the system-dependent definitions of structures and bit values. */
- #include <bits/resource.h>
- #ifndef __id_t_defined
- typedef __id_t id_t;
- # define __id_t_defined
- #endif
- __BEGIN_DECLS
- /* The X/Open standard defines that all the functions below must use
- `int' as the type for the first argument. When we are compiling with
- GNU extensions we change this slightly to provide better error
- checking. */
- #if defined __USE_GNU && !defined __cplusplus
- typedef enum __rlimit_resource __rlimit_resource_t;
- typedef enum __rusage_who __rusage_who_t;
- typedef enum __priority_which __priority_which_t;
- #else
- typedef int __rlimit_resource_t;
- typedef int __rusage_who_t;
- typedef int __priority_which_t;
- #endif
- /* Put the soft and hard limits for RESOURCE in *RLIMITS.
- Returns 0 if successful, -1 if not (and sets errno). */
- #ifndef __USE_FILE_OFFSET64
- extern int getrlimit (__rlimit_resource_t __resource,
- struct rlimit *__rlimits) __THROW;
- #else
- # ifdef __REDIRECT_NTH
- extern int __REDIRECT_NTH (getrlimit, (__rlimit_resource_t __resource,
- struct rlimit *__rlimits), getrlimit64);
- # else
- # define getrlimit getrlimit64
- # endif
- #endif
- #ifdef __USE_LARGEFILE64
- extern int getrlimit64 (__rlimit_resource_t __resource,
- struct rlimit64 *__rlimits) __THROW;
- #endif
- /* Set the soft and hard limits for RESOURCE to *RLIMITS.
- Only the super-user can increase hard limits.
- Return 0 if successful, -1 if not (and sets errno). */
- #ifndef __USE_FILE_OFFSET64
- extern int setrlimit (__rlimit_resource_t __resource,
- __const struct rlimit *__rlimits) __THROW;
- #else
- # ifdef __REDIRECT_NTH
- extern int __REDIRECT_NTH (setrlimit, (__rlimit_resource_t __resource,
- __const struct rlimit *__rlimits),
- setrlimit64);
- # else
- # define setrlimit setrlimit64
- # endif
- #endif
- #ifdef __USE_LARGEFILE64
- extern int setrlimit64 (__rlimit_resource_t __resource,
- __const struct rlimit64 *__rlimits) __THROW;
- #endif
- /* Return resource usage information on process indicated by WHO
- and put it in *USAGE. Returns 0 for success, -1 for failure. */
- extern int getrusage (__rusage_who_t __who, struct rusage *__usage) __THROW;
- /* Return the highest priority of any process specified by WHICH and WHO
- (see above); if WHO is zero, the current process, process group, or user
- (as specified by WHO) is used. A lower priority number means higher
- priority. Priorities range from PRIO_MIN to PRIO_MAX (above). */
- extern int getpriority (__priority_which_t __which, id_t __who) __THROW;
- /* Set the priority of all processes specified by WHICH and WHO (see above)
- to PRIO. Returns 0 on success, -1 on errors. */
- extern int setpriority (__priority_which_t __which, id_t __who, int __prio)
- __THROW;
- __END_DECLS
- #endif /* sys/resource.h */