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+/* Bit values & structures for resource limits. 4.4 BSD/generic GNU version.
+ Copyright (C) 1994, 1996 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* These are the values for 4.4 BSD and GNU. Earlier BSD systems have a
+ subset of these kinds of resource limit. In systems where `getrlimit'
+ and `setrlimit' are not system calls, these are the values used by the C
+ library to emulate them. */
+
+/* Kinds of resource limit. */
+enum __rlimit_resource
+ {
+ /* Per-process CPU limit, in seconds. */
+ RLIMIT_CPU,
+#define RLIMIT_CPU RLIMIT_CPU
+ /* Largest file that can be created, in bytes. */
+ RLIMIT_FSIZE,
+#define RLIMIT_FSIZE RLIMIT_FSIZE
+ /* Maximum size of data segment, in bytes. */
+ RLIMIT_DATA,
+#define RLIMIT_DATA RLIMIT_DATA
+ /* Maximum size of stack segment, in bytes. */
+ RLIMIT_STACK,
+#define RLIMIT_STACK RLIMIT_STACK
+ /* Largest core file that can be created, in bytes. */
+ RLIMIT_CORE,
+#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,
+#define RLIMIT_RSS RLIMIT_RSS
+ /* Locked-in-memory address space. */
+ RLIMIT_MEMLOCK,
+#define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
+ /* Number of processes. */
+ RLIMIT_NPROC,
+#define RLIMIT_NPROC RLIMIT_NPROC
+ /* Number of open files. */
+ RLIMIT_OFILE,
+ RLIMIT_NOFILE = RLIMIT_OFILE, /* Another name for the same thing. */
+#define RLIMIT_OFILE RLIMIT_OFILE
+#define RLIMIT_NOFILE RLIMIT_NOFILE
+
+ RLIMIT_NLIMITS, /* Number of limit flavors. */
+ RLIM_NLIMITS = RLIMIT_NLIMITS, /* Traditional name for same. */
+
+ RLIM_INFINITY = 0x7fffffff /* Value to indicate that there is no limit. */
+#define RLIM_INFINITY RLIM_INFINITY
+ };
+
+struct rlimit
+ {
+ /* The current (soft) limit. */
+ int rlim_cur;
+ /* The hard limit. */
+ int rlim_max;
+ };
+
+/* Whose usage statistics do you want? */
+enum __rusage_who
+/* The macro 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. */
+ {
+ /* 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
+ };
+
+#include <sys/time.h> /* For `struct timeval'. */
+
+/* Structure which says how much of each resource has been used. */
+struct rusage
+ {
+ /* Total amount of user time used. */
+ struct timeval ru_utime;
+ /* Total amount of system time used. */
+ struct timeval ru_stime;
+ /* Maximum resident set size (in kilobytes). */
+ long int ru_maxrss;
+ /* Amount of sharing of text segment memory
+ with other processes (kilobyte-seconds). */
+ long int ru_ixrss;
+ /* Amount of data segment memory used (kilobyte-seconds). */
+ long int ru_idrss;
+ /* Amount of stack memory used (kilobyte-seconds). */
+ long int ru_isrss;
+ /* Number of soft page faults (i.e. those serviced by reclaiming
+ a page from the list of pages awaiting reallocation. */
+ long int ru_minflt;
+ /* Number of hard page faults (i.e. those that required I/O). */
+ long int ru_majflt;
+ /* Number of times a process was swapped out of physical memory. */
+ long int ru_nswap;
+ /* Number of input operations via the file system. Note: This
+ and `ru_oublock' do not include operations with the cache. */
+ long int ru_inblock;
+ /* Number of output operations via the file system. */
+ long int ru_oublock;
+ /* Number of IPC messages sent. */
+ long int ru_msgsnd;
+ /* Number of IPC messages received. */
+ long int ru_msgrcv;
+ /* Number of signals delivered. */
+ long int ru_nsignals;
+ /* Number of voluntary context switches, i.e. because the process
+ gave up the process before it had to (usually to wait for some
+ resource to be available). */
+ long int ru_nvcsw;
+ /* Number of involuntary context switches, i.e. a higher priority process
+ became runnable or the current process used up its time slice. */
+ long int ru_nivcsw;
+ };
+
+/* 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. */
+ PRIO_PGRP = 1, /* WHO is a process group ID. */
+ PRIO_USER = 2 /* WHO is a user ID. */
+ };