1 /* Copyright (C) 1992,94,1996-2000,2002,2004 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <http://www.gnu.org/licenses/>. */ 17 18 #ifndef _SYS_RESOURCE_H 19 #define _SYS_RESOURCE_H 1 20 21 #include <features.h> 22 23 /* Get the system-dependent definitions of structures and bit values. */ 24 #include <bits/resource.h> 25 26 #ifndef __id_t_defined 27 typedef __id_t id_t; 28 # define __id_t_defined 29 #endif 30 31 __BEGIN_DECLS 32 33 /* The X/Open standard defines that all the functions below must use 34 `int' as the type for the first argument. When we are compiling with 35 GNU extensions we change this slightly to provide better error 36 checking. */ 37 #if defined __USE_GNU && !defined __cplusplus 38 typedef enum __rlimit_resource __rlimit_resource_t; 39 typedef enum __rusage_who __rusage_who_t; 40 typedef enum __priority_which __priority_which_t; 41 #else 42 typedef int __rlimit_resource_t; 43 typedef int __rusage_who_t; 44 typedef int __priority_which_t; 45 #endif 46 47 /* Put the soft and hard limits for RESOURCE in *RLIMITS. 48 Returns 0 if successful, -1 if not (and sets errno). */ 49 #ifndef __USE_FILE_OFFSET64 50 extern int getrlimit (__rlimit_resource_t __resource, 51 struct rlimit *__rlimits) __THROW; 52 libc_hidden_proto(getrlimit) 53 #else 54 # ifdef __REDIRECT_NTH 55 extern int __REDIRECT_NTH (getrlimit, (__rlimit_resource_t __resource, 56 struct rlimit *__rlimits), getrlimit64); 57 # else 58 # define getrlimit getrlimit64 59 # endif 60 #endif 61 #ifdef __USE_LARGEFILE64 62 extern int getrlimit64 (__rlimit_resource_t __resource, 63 struct rlimit64 *__rlimits) __THROW; 64 #endif 65 66 /* Set the soft and hard limits for RESOURCE to *RLIMITS. 67 Only the super-user can increase hard limits. 68 Return 0 if successful, -1 if not (and sets errno). */ 69 #ifndef __USE_FILE_OFFSET64 70 extern int setrlimit (__rlimit_resource_t __resource, 71 const struct rlimit *__rlimits) __THROW; 72 libc_hidden_proto(setrlimit) 73 #else 74 # ifdef __REDIRECT_NTH 75 extern int __REDIRECT_NTH (setrlimit, (__rlimit_resource_t __resource, 76 const struct rlimit *__rlimits), 77 setrlimit64); 78 # else 79 # define setrlimit setrlimit64 80 # endif 81 #endif 82 #ifdef __USE_LARGEFILE64 83 extern int setrlimit64 (__rlimit_resource_t __resource, 84 const struct rlimit64 *__rlimits) __THROW; 85 #endif 86 87 /* Return resource usage information on process indicated by WHO 88 and put it in *USAGE. Returns 0 for success, -1 for failure. */ 89 extern int getrusage (__rusage_who_t __who, struct rusage *__usage) __THROW; 90 91 /* Return the highest priority of any process specified by WHICH and WHO 92 (see above); if WHO is zero, the current process, process group, or user 93 (as specified by WHO) is used. A lower priority number means higher 94 priority. Priorities range from PRIO_MIN to PRIO_MAX (above). */ 95 extern int getpriority (__priority_which_t __which, id_t __who) __THROW; 96 libc_hidden_proto(getpriority) 97 98 /* Set the priority of all processes specified by WHICH and WHO (see above) 99 to PRIO. Returns 0 on success, -1 on errors. */ 100 extern int setpriority (__priority_which_t __which, id_t __who, int __prio) 101 __THROW; 102 libc_hidden_proto(setpriority) 103 104 __END_DECLS 105 106 #endif /* sys/resource.h */ 107