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Editing: resource.h
/* Bit values & structures for resource limits. Linux version. Copyright (C) 1994-2021 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, see <https://www.gnu.org/licenses/>. */ #ifndef _SYS_RESOURCE_H # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead." #endif #include <bits/types.h> /* Transmute defines to enumerations. The macro re-definitions are necessary because some programs want to test for operating system features with #ifdef RUSAGE_SELF. In ISO C the reflexive definition is a no-op. */ /* Kinds of resource limit. */ enum __rlimit_resource { /* Per-process CPU limit, in seconds. */ RLIMIT_CPU = 0, #define RLIMIT_CPU RLIMIT_CPU /* Largest file that can be created, in bytes. */ RLIMIT_FSIZE = 1, #define RLIMIT_FSIZE RLIMIT_FSIZE /* Maximum size of data segment, in bytes. */ RLIMIT_DATA = 2, #define RLIMIT_DATA RLIMIT_DATA /* Maximum size of stack segment, in bytes. */ RLIMIT_STACK = 3, #define RLIMIT_STACK RLIMIT_STACK /* Largest core file that can be created, in bytes. */ RLIMIT_CORE = 4, #define RLIMIT_CORE RLIMIT_CORE /* Largest resident set size, in bytes. This affects swapping; processes that are exceeding their resident set size will be more likely to have physical memory taken from them. */ __RLIMIT_RSS = 5, #define RLIMIT_RSS __RLIMIT_RSS /* Number of open files. */ RLIMIT_NOFILE = 7, __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */ #define RLIMIT_NOFILE RLIMIT_NOFILE #define RLIMIT_OFILE __RLIMIT_OFILE /* Address space limit. */ RLIMIT_AS = 9, #define RLIMIT_AS RLIMIT_AS /* Number of processes. */ __RLIMIT_NPROC = 6, #define RLIMIT_NPROC __RLIMIT_NPROC /* Locked-in-memory address space. */ __RLIMIT_MEMLOCK = 8, #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK /* Maximum number of file locks. */ __RLIMIT_LOCKS = 10, #define RLIMIT_LOCKS __RLIMIT_LOCKS /* Maximum number of pending signals. */ __RLIMIT_SIGPENDING = 11, #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING /* Maximum bytes in POSIX message queues. */ __RLIMIT_MSGQUEUE = 12, #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE /* Maximum nice priority allowed to raise to. Nice levels 19 .. -20 correspond to 0 .. 39 values of this resource limit. */ __RLIMIT_NICE = 13, #define RLIMIT_NICE __RLIMIT_NICE /* Maximum realtime priority allowed for non-priviledged processes. */ __RLIMIT_RTPRIO = 14, #define RLIMIT_RTPRIO __RLIMIT_RTPRIO /* Maximum CPU time in microseconds that a process scheduled under a real-time scheduling policy may consume without making a blocking system call before being forcibly descheduled. */ __RLIMIT_RTTIME = 15, #define RLIMIT_RTTIME __RLIMIT_RTTIME __RLIMIT_NLIMITS = 16, __RLIM_NLIMITS = __RLIMIT_NLIMITS #define RLIMIT_NLIMITS __RLIMIT_NLIMITS #define RLIM_NLIMITS __RLIM_NLIMITS }; /* Value to indicate that there is no limit. */ #ifndef __USE_FILE_OFFSET64 # define RLIM_INFINITY ((__rlim_t) -1) #else # define RLIM_INFINITY 0xffffffffffffffffuLL #endif #ifdef __USE_LARGEFILE64 # define RLIM64_INFINITY 0xffffffffffffffffuLL #endif /* We can represent all limits. */ #define RLIM_SAVED_MAX RLIM_INFINITY #define RLIM_SAVED_CUR RLIM_INFINITY /* Type for resource quantity measurement. */ #ifndef __USE_FILE_OFFSET64 typedef __rlim_t rlim_t; #else typedef __rlim64_t rlim_t; #endif #ifdef __USE_LARGEFILE64 typedef __rlim64_t rlim64_t; #endif struct rlimit { /* The current (soft) limit. */ rlim_t rlim_cur; /* The hard limit. */ rlim_t rlim_max; }; #ifdef __USE_LARGEFILE64 struct rlimit64 { /* The current (soft) limit. */ rlim64_t rlim_cur; /* The hard limit. */ rlim64_t rlim_max; }; #endif /* Whose usage statistics do you want? */ enum __rusage_who { /* The calling process. */ RUSAGE_SELF = 0, #define RUSAGE_SELF RUSAGE_SELF /* All of its terminated child processes. */ RUSAGE_CHILDREN = -1 #define RUSAGE_CHILDREN RUSAGE_CHILDREN #ifdef __USE_GNU , /* The calling thread. */ RUSAGE_THREAD = 1 # define RUSAGE_THREAD RUSAGE_THREAD /* Name for the same functionality on Solaris. */ # define RUSAGE_LWP RUSAGE_THREAD #endif }; #include <bits/types/struct_timeval.h> #include <bits/types/struct_rusage.h> /* Priority limits. */ #define PRIO_MIN -20 /* Minimum priority a process can have. */ #define PRIO_MAX 20 /* Maximum priority a process can have. */ /* The type of the WHICH argument to `getpriority' and `setpriority', indicating what flavor of entity the WHO argument specifies. */ enum __priority_which { PRIO_PROCESS = 0, /* WHO is a process ID. */ #define PRIO_PROCESS PRIO_PROCESS PRIO_PGRP = 1, /* WHO is a process group ID. */ #define PRIO_PGRP PRIO_PGRP PRIO_USER = 2 /* WHO is a user ID. */ #define PRIO_USER PRIO_USER }; __BEGIN_DECLS #ifdef __USE_GNU /* Modify and return resource limits of a process atomically. */ # ifndef __USE_FILE_OFFSET64 extern int prlimit (__pid_t __pid, enum __rlimit_resource __resource, const struct rlimit *__new_limit, struct rlimit *__old_limit) __THROW; # else # ifdef __REDIRECT_NTH extern int __REDIRECT_NTH (prlimit, (__pid_t __pid, enum __rlimit_resource __resource, const struct rlimit *__new_limit, struct rlimit *__old_limit), prlimit64); # else # define prlimit prlimit64 # endif # endif # ifdef __USE_LARGEFILE64 extern int prlimit64 (__pid_t __pid, enum __rlimit_resource __resource, const struct rlimit64 *__new_limit, struct rlimit64 *__old_limit) __THROW; # endif #endif __END_DECLS
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