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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /resource/sys
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initial import
Diffstat (limited to 'resource/sys')
-rw-r--r--resource/sys/resource.h154
-rw-r--r--resource/sys/vlimit.h68
-rw-r--r--resource/sys/vtimes.h69
3 files changed, 291 insertions, 0 deletions
diff --git a/resource/sys/resource.h b/resource/sys/resource.h
new file mode 100644
index 0000000000..9bef483359
--- /dev/null
+++ b/resource/sys/resource.h
@@ -0,0 +1,154 @@
+/* Copyright (C) 1992, 1994 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#ifndef _SYS_RESOURCE_H
+
+#define _SYS_RESOURCE_H 1
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Get the system-dependent definitions of RLIM_*. */
+#include <resourcebits.h>
+
+struct rlimit
+ {
+ /* The current (soft) limit. */
+ int rlim_cur;
+ /* The hard limit. */
+ int rlim_max;
+ };
+
+/* Value used to indicate that there is no limit. */
+#define RLIM_INFINITY 0x7fffffff
+
+/* Put the soft and hard limits for RESOURCE in *RLIMITS.
+ Returns 0 if successful, -1 if not (and sets errno). */
+int getrlimit __P ((enum __rlimit_resource __resource,
+ struct rlimit * __rlimits));
+
+/* 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). */
+int setrlimit __P ((enum __rlimit_resource __resource,
+ struct rlimit * __rlimits));
+
+
+/* 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 ANSI 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 ru_maxrss;
+ /* Amount of sharing of text segment memory
+ with other processes (kilobyte-seconds). */
+ long ru_ixrss;
+ /* Amount of data segment memory used (kilobyte-seconds). */
+ long ru_idrss;
+ /* Amount of stack memory used (kilobyte-seconds). */
+ long ru_isrss;
+ /* Number of soft page faults (i.e. those serviced by reclaiming
+ a page from the list of pages awaiting reallocation. */
+ long ru_minflt;
+ /* Number of hard page faults (i.e. those that required I/O). */
+ long ru_majflt;
+ /* Number of times a process was swapped out of physical memory. */
+ long ru_nswap;
+ /* Number of input operations via the file system. Note: This
+ and `ru_oublock' do not include operations with the cache. */
+ long ru_inblock;
+ /* Number of output operations via the file system. */
+ long ru_oublock;
+ /* Number of IPC messages sent. */
+ long ru_msgsnd;
+ /* Number of IPC messages received. */
+ long ru_msgrcv;
+ /* Number of signals delivered. */
+ long 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 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 ru_nivcsw;
+ };
+
+/* Return resource usage information on process indicated by WHO
+ and put it in *USAGE. Returns 0 for success, -1 for failure. */
+int __getrusage __P ((enum __rusage_who __who, struct rusage * __usage));
+int getrusage __P ((enum __rusage_who __who, struct rusage * __usage));
+
+/* Function depends on CMD:
+ 1 = Return the limit on the size of a file, in units of 512 bytes.
+ 2 = Set the limit on the size of a file to NEWLIMIT. Only the
+ super-user can increase the limit.
+ 3 = Return the maximum possible address of the data segment.
+ 4 = Return the maximum number of files that the calling process can open.
+ Returns -1 on errors. */
+long int __ulimit __P ((int __cmd, long int __newlimit));
+long int ulimit __P ((int __cmd, long int __newlimit));
+
+
+/* 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. */
+ };
+
+/* 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 __P ((enum __priority_which __which, int __who));
+
+/* 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 __P ((enum __priority_which __which, int __who,
+ int __prio));
+
+
+__END_DECLS
+
+#endif /* resource.h */
diff --git a/resource/sys/vlimit.h b/resource/sys/vlimit.h
new file mode 100644
index 0000000000..db0fdaeac5
--- /dev/null
+++ b/resource/sys/vlimit.h
@@ -0,0 +1,68 @@
+/* Copyright (C) 1991, 1992 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, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#ifndef _SYS_VLIMIT_H
+
+#define _SYS_VLIMIT_H 1
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* This interface is obsolete, and is superseded by <sys/resource.h>. */
+
+/* Kinds of resource limit. */
+enum __vlimit_resource
+{
+ /* Setting this non-zero makes it impossible to raise limits.
+ Only the super-use can set it to zero.
+
+ This is not implemented in recent versions of BSD, nor by
+ the GNU C library. */
+ LIM_NORAISE,
+
+ /* CPU time available for each process (seconds). */
+ LIM_CPU,
+
+ /* Largest file which can be created (bytes). */
+ LIM_FSIZE,
+
+ /* Maximum size of the data segment (bytes). */
+ LIM_DATA,
+
+ /* Maximum size of the stack segment (bytes). */
+ LIM_STACK,
+
+ /* Largest core file that will be created (bytes). */
+ LIM_CORE,
+
+ /* Resident set size (bytes). */
+ LIM_MAXRSS
+};
+
+/* This means no limit. */
+#define INFINITY 0x7fffffff
+
+
+/* Set the soft limit for RESOURCE to be VALUE.
+ Returns 0 for success, -1 for failure. */
+int vlimit __P ((enum __vlimit_resource __resource, int __value));
+
+
+__END_DECLS
+
+#endif /* vlimit.h */
diff --git a/resource/sys/vtimes.h b/resource/sys/vtimes.h
new file mode 100644
index 0000000000..e83d34c101
--- /dev/null
+++ b/resource/sys/vtimes.h
@@ -0,0 +1,69 @@
+/* Copyright (C) 1991, 1992 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, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#ifndef _SYS_VTIMES_H
+
+#define _SYS_VTIMES_H 1
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* This interface is obsolete; use `getrusage' instead. */
+
+/* Granularity of the `vm_utime' and `vm_stime' fields of a `struct vtimes'.
+ (This is the frequency of the machine's power supply, in Hz.) */
+#define VTIMES_UNITS_PER_SECOND 60
+
+struct vtimes
+{
+ /* User time used in units of 1/VTIMES_UNITS_PER_SECOND seconds. */
+ int vm_utime;
+ /* System time used in units of 1/VTIMES_UNITS_PER_SECOND seconds. */
+ int vm_stime;
+
+ /* Amount of data and stack memory used (kilobyte-seconds). */
+ unsigned int vm_idsrss;
+ /* Amount of text memory used (kilobyte-seconds). */
+ unsigned int vm_ixrss;
+ /* Maximum resident set size (text, data, and stack) (kilobytes). */
+ int vm_maxrss;
+
+ /* Number of hard page faults (i.e. those that required I/O). */
+ int vm_majflt;
+ /* Number of soft page faults (i.e. those serviced by reclaiming
+ a page from the list of pages awaiting reallocation. */
+ int vm_minflt;
+
+ /* Number of times a process was swapped out of physical memory. */
+ int vm_nswap;
+
+ /* Number of input operations via the file system. Note: This
+ and `ru_oublock' do not include operations with the cache. */
+ int vm_inblk;
+ /* Number of output operations via the file system. */
+ int vm_oublk;
+};
+
+/* If CURRENT is not NULL, write statistics for the current process into
+ *CURRENT. If CHILD is not NULL, write statistics for all terminated child
+ processes into *CHILD. Returns 0 for success, -1 for failure. */
+int vtimes __P ((struct vtimes * __current, struct vtimes * __child));
+
+__END_DECLS
+
+#endif /* sys/vtimes.h */