/* Get the system load averages.
- Copyright (C) 1985, 86, 87, 88, 89, 91, 92, 93, 1994, 1995
- Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2013 Free Software
+ Foundation, Inc.
+
+ NOTE: The canonical source of this file is maintained with gnulib.
+ Bugs can be reported to bug-gnulib@gnu.org.
+
+ This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Compile-time symbols that this file uses:
- FIXUP_KERNEL_SYMBOL_ADDR() Adjust address in returned struct nlist.
- KERNEL_FILE Pathname of the kernel to nlist.
- LDAV_CVT() Scale the load average from the kernel.
- Returns a double.
- LDAV_SYMBOL Name of kernel symbol giving load average.
- LOAD_AVE_TYPE Type of the load average array in the kernel.
- Must be defined unless one of
- apollo, DGUX, NeXT, or UMAX is defined;
- otherwise, no load average is available.
- NLIST_STRUCT Include nlist.h, not a.out.h, and
- the nlist n_name element is a pointer,
- not an array.
- NLIST_NAME_UNION struct nlist has an n_un member, not n_name.
- LINUX_LDAV_FILE [__linux__]: File containing load averages.
+ HAVE_PSTAT_GETDYNAMIC Define this if your system has the
+ pstat_getdynamic function. I think it
+ is unique to HPUX9. The best way to get the
+ definition is through the AC_FUNC_GETLOADAVG
+ macro that comes with autoconf 2.13 or newer.
+ If that isn't an option, then just put
+ AC_CHECK_FUNCS(pstat_getdynamic) in your
+ configure.ac file.
+ HAVE_LIBPERFSTAT Define this if your system has the
+ perfstat_cpu_total function in libperfstat (AIX).
+ FIXUP_KERNEL_SYMBOL_ADDR() Adjust address in returned struct nlist.
+ KERNEL_FILE Name of the kernel file to nlist.
+ LDAV_CVT() Scale the load average from the kernel.
+ Returns a double.
+ LDAV_SYMBOL Name of kernel symbol giving load average.
+ LOAD_AVE_TYPE Type of the load average array in the kernel.
+ Must be defined unless one of
+ apollo, DGUX, NeXT, or UMAX is defined;
+ or we have libkstat;
+ otherwise, no load average is available.
+ HAVE_NLIST_H nlist.h is available. NLIST_STRUCT defaults
+ to this.
+ NLIST_STRUCT Include nlist.h, not a.out.h.
+ N_NAME_POINTER The nlist n_name element is a pointer,
+ not an array.
+ HAVE_STRUCT_NLIST_N_UN_N_NAME 'n_un.n_name' is member of 'struct nlist'.
+ LINUX_LDAV_FILE [__linux__, __CYGWIN__]: File containing
+ load averages.
Specific system predefines this file uses, aside from setting
default values if not emacs:
apollo
- BSD Real BSD, not just BSD-like.
+ BSD Real BSD, not just BSD-like.
convex
DGUX
- eunice UNIX emulator under VMS.
+ eunice UNIX emulator under VMS.
hpux
+ __MSDOS__ No-op for MSDOS.
NeXT
sgi
- sequent Sequent Dynix 3.x.x (BSD)
- _SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
+ sequent Sequent Dynix 3.x.x (BSD)
+ _SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
sony_news NEWS-OS (works at least for 4.1C)
UMAX
UMAX4_3
VMS
- __linux__ Linux: assumes /proc filesystem mounted.
- Support from Michael K. Johnson.
- __NetBSD__ NetBSD: assumes /kern filesystem mounted.
+ WINDOWS32 No-op for Windows95/NT.
+ __linux__ Linux: assumes /proc file system mounted.
+ Support from Michael K. Johnson.
+ __CYGWIN__ Cygwin emulates linux /proc/loadavg.
+ __NetBSD__ NetBSD: assumes /kern file system mounted.
In addition, to avoid nesting many #ifdefs, we internally set
LDAV_DONE to indicate that the load average has been computed.
We also #define LDAV_PRIVILEGED if a program will require
special installation to be able to call getloadavg. */
-/* This should always be first. */
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
-
-#include <sys/types.h>
-
-/* Both the Emacs and non-Emacs sections want this. Some
- configuration files' definitions for the LOAD_AVE_CVT macro (like
- sparc.h's) use macros like FSCALE, defined here. */
-#ifdef unix
-#include <sys/param.h>
-#endif
-
-
-/* Exclude all the code except the test program at the end
- if the system has its own `getloadavg' function.
- The declaration of `errno' is needed by the test program
- as well as the function itself, so it comes first. */
+/* Specification. */
+#include <stdlib.h>
#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
-#ifndef errno
-extern int errno;
-#endif
-
-#ifndef HAVE_GETLOADAVG
-
-
-/* The existing Emacs configuration files define a macro called
- LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and
- returns the load average multiplied by 100. What we actually want
- is a macro called LDAV_CVT, which returns the load average as an
- unmultiplied double.
+# include <sys/types.h>
- For backwards compatibility, we'll define LDAV_CVT in terms of
- LOAD_AVE_CVT, but future machine config files should just define
- LDAV_CVT directly. */
+# if HAVE_SYS_PARAM_H
+# include <sys/param.h>
+# endif
-#if !defined(LDAV_CVT) && defined(LOAD_AVE_CVT)
-#define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0)
-#endif
+# include "intprops.h"
-#if !defined (BSD) && defined (ultrix)
+# if !defined (BSD) && defined (ultrix)
/* Ultrix behaves like BSD on Vaxen. */
-#define BSD
-#endif
+# define BSD
+# endif
-#ifdef NeXT
+# ifdef NeXT
/* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which
conflicts with the definition understood in this file, that this
really is BSD. */
-#undef BSD
+# undef BSD
/* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being
defined to mean that the nlist method should be used, which is not true. */
-#undef FSCALE
-#endif
+# undef FSCALE
+# endif
+
+/* Same issues as for NeXT apply to the HURD-based GNU system. */
+# ifdef __GNU__
+# undef BSD
+# undef FSCALE
+# endif /* __GNU__ */
/* Set values that are different from the defaults, which are
set a little farther down with #ifndef. */
/* Some shorthands. */
-#if defined (HPUX) && !defined (hpux)
-#define hpux
-#endif
-
-#if defined(hp300) && !defined(hpux)
-#define MORE_BSD
-#endif
-
-#if defined(ultrix) && defined(mips)
-#define decstation
-#endif
-
-#if (defined(sun) || defined(__sun)) && defined(SVR4)
-#define SUNOS_5
-#endif
-
-#if defined (__osf__) && (defined (__alpha) || defined (__alpha__))
-#define OSF_ALPHA
-#include <sys/table.h>
-#endif
-
-#if defined (__osf__) && (defined (mips) || defined (__mips__))
-#define OSF_MIPS
-#include <sys/table.h>
-#endif
+# if defined (HPUX) && !defined (hpux)
+# define hpux
+# endif
+
+# if defined (__hpux) && !defined (hpux)
+# define hpux
+# endif
+
+# if defined (__sun) && !defined (sun)
+# define sun
+# endif
+
+# if defined (hp300) && !defined (hpux)
+# define MORE_BSD
+# endif
+
+# if defined (ultrix) && defined (mips)
+# define decstation
+# endif
+
+# if defined (__SVR4) && !defined (SVR4)
+# define SVR4
+# endif
+
+# if (defined (sun) && defined (SVR4)) || defined (SOLARIS2)
+# define SUNOS_5
+# endif
+
+# if defined (__osf__) && (defined (__alpha) || defined (__alpha__))
+# define OSF_ALPHA
+# include <sys/mbuf.h>
+# include <sys/socket.h>
+# include <net/route.h>
+# include <sys/table.h>
+/* Tru64 4.0D's table.h redefines sys */
+# undef sys
+# endif
+
+# if defined (__osf__) && (defined (mips) || defined (__mips__))
+# define OSF_MIPS
+# include <sys/table.h>
+# endif
/* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine
that with a couple of other things and we'll have a unique match. */
-#if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
-#define tek4300 /* Define by emacs, but not by other users. */
-#endif
+# if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
+# define tek4300 /* Define by emacs, but not by other users. */
+# endif
/* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */
-#ifndef LOAD_AVE_TYPE
+# ifndef LOAD_AVE_TYPE
-#ifdef MORE_BSD
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef MORE_BSD
+# define LOAD_AVE_TYPE long
+# endif
-#if defined(sun) || defined(__sun)
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef sun
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef decstation
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef decstation
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef _SEQUENT_
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef _SEQUENT_
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef sgi
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef sgi
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef SVR4
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef SVR4
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef sony_news
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef sony_news
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef sequent
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef sequent
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef OSF_ALPHA
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef OSF_ALPHA
+# define LOAD_AVE_TYPE long
+# endif
-#if defined (ardent) && defined (titan)
-#define LOAD_AVE_TYPE long
-#endif
+# if defined (ardent) && defined (titan)
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef tek4300
-#define LOAD_AVE_TYPE long
-#endif
+# ifdef tek4300
+# define LOAD_AVE_TYPE long
+# endif
-#if defined(alliant) && defined(i860) /* Alliant FX/2800 */
-#define LOAD_AVE_TYPE long
-#endif
+# if defined (alliant) && defined (i860) /* Alliant FX/2800 */
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef _AIX
-#define LOAD_AVE_TYPE long
-#endif
+# if defined _AIX && ! defined HAVE_LIBPERFSTAT
+# define LOAD_AVE_TYPE long
+# endif
-#ifdef convex
-#define LOAD_AVE_TYPE double
-#ifndef LDAV_CVT
-#define LDAV_CVT(n) (n)
-#endif
-#endif
+# ifdef convex
+# define LOAD_AVE_TYPE double
+# ifndef LDAV_CVT
+# define LDAV_CVT(n) (n)
+# endif
+# endif
-#endif /* No LOAD_AVE_TYPE. */
+# endif /* No LOAD_AVE_TYPE. */
-#ifdef OSF_ALPHA
+# ifdef OSF_ALPHA
/* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1,
according to ghazi@noc.rutgers.edu. */
-#undef FSCALE
-#define FSCALE 1024.0
-#endif
+# undef FSCALE
+# define FSCALE 1024.0
+# endif
-#if defined(alliant) && defined(i860) /* Alliant FX/2800 */
+# if defined (alliant) && defined (i860) /* Alliant FX/2800 */
/* <sys/param.h> defines an incorrect value for FSCALE on an
Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */
-#undef FSCALE
-#define FSCALE 100.0
-#endif
+# undef FSCALE
+# define FSCALE 100.0
+# endif
-#ifndef FSCALE
+# ifndef FSCALE
/* SunOS and some others define FSCALE in sys/param.h. */
-#ifdef MORE_BSD
-#define FSCALE 2048.0
-#endif
+# ifdef MORE_BSD
+# define FSCALE 2048.0
+# endif
-#if defined(MIPS) || defined(SVR4) || defined(decstation)
-#define FSCALE 256
-#endif
+# if defined (MIPS) || defined (SVR4) || defined (decstation)
+# define FSCALE 256
+# endif
-#if defined (sgi) || defined (sequent)
+# if defined (sgi) || defined (sequent)
/* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
above under #ifdef MIPS. But we want the sgi value. */
-#undef FSCALE
-#define FSCALE 1000.0
-#endif
-
-#if defined (ardent) && defined (titan)
-#define FSCALE 65536.0
-#endif
-
-#ifdef tek4300
-#define FSCALE 100.0
-#endif
-
-#ifdef _AIX
-#define FSCALE 65536.0
-#endif
-
-#endif /* Not FSCALE. */
-
-#if !defined (LDAV_CVT) && defined (FSCALE)
-#define LDAV_CVT(n) (((double) (n)) / FSCALE)
-#endif
-
-/* VAX C can't handle multi-line #ifs, or lines longer that 256 characters. */
-#ifndef NLIST_STRUCT
+# undef FSCALE
+# define FSCALE 1000.0
+# endif
-#ifdef MORE_BSD
-#define NLIST_STRUCT
-#endif
+# if defined (ardent) && defined (titan)
+# define FSCALE 65536.0
+# endif
-#if defined(sun) || defined(__sun)
-#define NLIST_STRUCT
-#endif
+# ifdef tek4300
+# define FSCALE 100.0
+# endif
-#ifdef decstation
-#define NLIST_STRUCT
-#endif
+# if defined _AIX && !defined HAVE_LIBPERFSTAT
+# define FSCALE 65536.0
+# endif
-#ifdef hpux
-#define NLIST_STRUCT
-#endif
+# endif /* Not FSCALE. */
-#if defined (_SEQUENT_) || defined (sequent)
-#define NLIST_STRUCT
-#endif
+# if !defined (LDAV_CVT) && defined (FSCALE)
+# define LDAV_CVT(n) (((double) (n)) / FSCALE)
+# endif
-#ifdef sgi
-#define NLIST_STRUCT
-#endif
+# ifndef NLIST_STRUCT
+# if HAVE_NLIST_H
+# define NLIST_STRUCT
+# endif
+# endif
-#ifdef SVR4
-#define NLIST_STRUCT
-#endif
+# if defined (sgi) || (defined (mips) && !defined (BSD))
+# define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31))
+# endif
-#ifdef sony_news
-#define NLIST_STRUCT
-#endif
-#ifdef OSF_ALPHA
-#define NLIST_STRUCT
-#endif
+# if !defined (KERNEL_FILE) && defined (sequent)
+# define KERNEL_FILE "/dynix"
+# endif
-#if defined (ardent) && defined (titan)
-#define NLIST_STRUCT
-#endif
+# if !defined (KERNEL_FILE) && defined (hpux)
+# define KERNEL_FILE "/hp-ux"
+# endif
-#ifdef tek4300
-#define NLIST_STRUCT
-#endif
+# if !defined (KERNEL_FILE) && (defined (_SEQUENT_) || defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)))
+# define KERNEL_FILE "/unix"
+# endif
-#ifdef butterfly
-#define NLIST_STRUCT
-#endif
-#if defined(alliant) && defined(i860) /* Alliant FX/2800 */
-#define NLIST_STRUCT
-#endif
+# if !defined (LDAV_SYMBOL) && defined (alliant)
+# define LDAV_SYMBOL "_Loadavg"
+# endif
-#ifdef _AIX
-#define NLIST_STRUCT
-#endif
+# if !defined (LDAV_SYMBOL) && ((defined (hpux) && !defined (hp9000s300)) || defined (_SEQUENT_) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)) || (defined (_AIX) && !defined(HAVE_LIBPERFSTAT)))
+# define LDAV_SYMBOL "avenrun"
+# endif
-#endif /* defined (NLIST_STRUCT) */
-
-
-#if defined(sgi) || (defined(mips) && !defined(BSD))
-#define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31))
-#endif
-
-
-#if !defined (KERNEL_FILE) && defined (sequent)
-#define KERNEL_FILE "/dynix"
-#endif
-
-#if !defined (KERNEL_FILE) && defined (hpux)
-#define KERNEL_FILE "/hp-ux"
-#endif
-
-#if !defined(KERNEL_FILE) && (defined(_SEQUENT_) || defined(MIPS) || defined(SVR4) || defined(ISC) || defined (sgi) || defined(SVR4) || (defined (ardent) && defined (titan)))
-#define KERNEL_FILE "/unix"
-#endif
-
-
-#if !defined (LDAV_SYMBOL) && defined (alliant)
-#define LDAV_SYMBOL "_Loadavg"
-#endif
-
-#if !defined(LDAV_SYMBOL) && ((defined(hpux) && !defined(hp9000s300)) || defined(_SEQUENT_) || defined(SVR4) || defined(ISC) || defined(sgi) || (defined (ardent) && defined (titan)) || defined (_AIX))
-#define LDAV_SYMBOL "avenrun"
-#endif
-
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include <stdio.h>
+# include <unistd.h>
/* LOAD_AVE_TYPE should only get defined if we're going to use the
nlist method. */
-#if !defined(LOAD_AVE_TYPE) && (defined(BSD) || defined(LDAV_CVT) || defined(KERNEL_FILE) || defined(LDAV_SYMBOL))
-#define LOAD_AVE_TYPE double
-#endif
-
-#ifdef LOAD_AVE_TYPE
-
-#ifndef VMS
-#ifndef NLIST_STRUCT
-#include <a.out.h>
-#else /* NLIST_STRUCT */
-#include <nlist.h>
-#endif /* NLIST_STRUCT */
-
-#ifdef SUNOS_5
-#include <fcntl.h>
-#include <kvm.h>
-#endif
-
-#ifndef KERNEL_FILE
-#define KERNEL_FILE "/vmunix"
-#endif /* KERNEL_FILE */
-
-#ifndef LDAV_SYMBOL
-#define LDAV_SYMBOL "_avenrun"
-#endif /* LDAV_SYMBOL */
-
-#else /* VMS */
-
-#ifndef eunice
-#include <iodef.h>
-#include <descrip.h>
-#else /* eunice */
-#include <vms/iodef.h>
-#endif /* eunice */
-#endif /* VMS */
-
-#ifndef LDAV_CVT
-#define LDAV_CVT(n) ((double) (n))
-#endif /* !LDAV_CVT */
-
-#endif /* LOAD_AVE_TYPE */
-
-#ifdef NeXT
-#ifdef HAVE_MACH_MACH_H
-#include <mach/mach.h>
-#else
-#include <mach.h>
-#endif
-#endif /* NeXT */
-
-#ifdef sgi
-#include <sys/sysmp.h>
-#endif /* sgi */
-
-#ifdef UMAX
-#include <stdio.h>
-#include <signal.h>
-#include <sys/time.h>
-#include <sys/wait.h>
-#include <sys/syscall.h>
-
-#ifdef UMAX_43
-#include <machine/cpu.h>
-#include <inq_stats/statistics.h>
-#include <inq_stats/sysstats.h>
-#include <inq_stats/cpustats.h>
-#include <inq_stats/procstats.h>
-#else /* Not UMAX_43. */
-#include <sys/sysdefs.h>
-#include <sys/statistics.h>
-#include <sys/sysstats.h>
-#include <sys/cpudefs.h>
-#include <sys/cpustats.h>
-#include <sys/procstats.h>
-#endif /* Not UMAX_43. */
-#endif /* UMAX */
-
-#ifdef DGUX
-#include <sys/dg_sys_info.h>
-#endif
-
-#if defined(HAVE_FCNTL_H) || defined(_POSIX_VERSION)
-#include <fcntl.h>
-#else
-#include <sys/file.h>
-#endif
+# if !defined (LOAD_AVE_TYPE) && (defined (BSD) || defined (LDAV_CVT) || defined (KERNEL_FILE) || defined (LDAV_SYMBOL))
+# define LOAD_AVE_TYPE double
+# endif
+
+# ifdef LOAD_AVE_TYPE
+
+# ifndef __VMS
+# ifndef __linux__
+# ifndef NLIST_STRUCT
+# include <a.out.h>
+# else /* NLIST_STRUCT */
+# include <nlist.h>
+# endif /* NLIST_STRUCT */
+
+# ifdef SUNOS_5
+# include <kvm.h>
+# include <kstat.h>
+# endif
+
+# if defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
+# include <sys/pstat.h>
+# endif
+
+# ifndef KERNEL_FILE
+# define KERNEL_FILE "/vmunix"
+# endif /* KERNEL_FILE */
+
+# ifndef LDAV_SYMBOL
+# define LDAV_SYMBOL "_avenrun"
+# endif /* LDAV_SYMBOL */
+# endif /* __linux__ */
+
+# else /* __VMS */
+
+# ifndef eunice
+# include <iodef.h>
+# include <descrip.h>
+# else /* eunice */
+# include <vms/iodef.h>
+# endif /* eunice */
+# endif /* __VMS */
+
+# ifndef LDAV_CVT
+# define LDAV_CVT(n) ((double) (n))
+# endif /* !LDAV_CVT */
+
+# endif /* LOAD_AVE_TYPE */
+
+# if defined HAVE_LIBPERFSTAT
+# include <sys/protosw.h>
+# include <libperfstat.h>
+# include <sys/proc.h>
+# ifndef SBITS
+# define SBITS 16
+# endif
+# endif
+
+# if defined (__GNU__) && !defined (NeXT)
+/* Note that NeXT Openstep defines __GNU__ even though it should not. */
+/* GNU system acts much like NeXT, for load average purposes,
+ but not exactly. */
+# define NeXT
+# define host_self mach_host_self
+# endif
+
+# ifdef NeXT
+# ifdef HAVE_MACH_MACH_H
+# include <mach/mach.h>
+# else
+# include <mach.h>
+# endif
+# endif /* NeXT */
+
+# ifdef sgi
+# include <sys/sysmp.h>
+# endif /* sgi */
+
+# ifdef UMAX
+# include <signal.h>
+# include <sys/time.h>
+# include <sys/wait.h>
+# include <sys/syscall.h>
+
+# ifdef UMAX_43
+# include <machine/cpu.h>
+# include <inq_stats/statistics.h>
+# include <inq_stats/sysstats.h>
+# include <inq_stats/cpustats.h>
+# include <inq_stats/procstats.h>
+# else /* Not UMAX_43. */
+# include <sys/sysdefs.h>
+# include <sys/statistics.h>
+# include <sys/sysstats.h>
+# include <sys/cpudefs.h>
+# include <sys/cpustats.h>
+# include <sys/procstats.h>
+# endif /* Not UMAX_43. */
+# endif /* UMAX */
+
+# ifdef DGUX
+# include <sys/dg_sys_info.h>
+# endif
+
+# if (defined __linux__ || defined __CYGWIN__ || defined SUNOS_5 \
+ || (defined LOAD_AVE_TYPE && ! defined __VMS))
+# include <fcntl.h>
+# endif
\f
/* Avoid static vars inside a function since in HPUX they dump as pure. */
-#ifdef NeXT
+# ifdef NeXT
static processor_set_t default_set;
-static int getloadavg_initialized;
-#endif /* NeXT */
+static bool getloadavg_initialized;
+# endif /* NeXT */
-#ifdef UMAX
+# ifdef UMAX
static unsigned int cpus = 0;
static unsigned int samples;
-#endif /* UMAX */
+# endif /* UMAX */
-#ifdef DGUX
-static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
-#endif /* DGUX */
+# ifdef DGUX
+static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
+# endif /* DGUX */
-#ifdef LOAD_AVE_TYPE
+# if !defined (HAVE_LIBKSTAT) && defined (LOAD_AVE_TYPE)
/* File descriptor open to /dev/kmem or VMS load ave driver. */
static int channel;
-/* Nonzero iff channel is valid. */
-static int getloadavg_initialized;
+/* True if channel is valid. */
+static bool getloadavg_initialized;
/* Offset in kmem to seek to read load average, or 0 means invalid. */
static long offset;
-#if !defined(VMS) && !defined(sgi)
-static struct nlist nl[2];
-#endif /* Not VMS or sgi */
+# if ! defined __VMS && ! defined sgi && ! defined __linux__
+static struct nlist name_list[2];
+# endif
-#ifdef SUNOS_5
+# ifdef SUNOS_5
static kvm_t *kd;
-#endif /* SUNOS_5 */
+# endif /* SUNOS_5 */
-#endif /* LOAD_AVE_TYPE */
+# endif /* LOAD_AVE_TYPE && !HAVE_LIBKSTAT */
\f
/* Put the 1 minute, 5 minute and 15 minute load averages
into the first NELEM elements of LOADAVG.
Return the number written (never more than 3, but may be less than NELEM),
- or -1 if an error occurred. */
+ or -1 (setting errno) if an error occurred. */
int
-getloadavg (loadavg, nelem)
- double loadavg[];
- int nelem;
+getloadavg (double loadavg[], int nelem)
{
- int elem = 0; /* Return value. */
+ int elem = 0; /* Return value. */
-#ifdef NO_GET_LOAD_AVG
-#define LDAV_DONE
- /* Set errno to zero to indicate that there was no particular error;
- this function just can't work at all on this system. */
- errno = 0;
+# ifdef NO_GET_LOAD_AVG
+# define LDAV_DONE
+ errno = ENOSYS;
elem = -1;
-#endif
+# endif
+
+# if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT) /* Solaris <= 2.6 */
+/* Use libkstat because we don't have to be root. */
+# define LDAV_DONE
+ kstat_ctl_t *kc;
+ kstat_t *ksp;
+ kstat_named_t *kn;
+ int saved_errno;
+
+ kc = kstat_open ();
+ if (kc == 0)
+ return -1;
+ ksp = kstat_lookup (kc, "unix", 0, "system_misc");
+ if (ksp == 0)
+ return -1;
+ if (kstat_read (kc, ksp, 0) == -1)
+ return -1;
+
+
+ kn = kstat_data_lookup (ksp, "avenrun_1min");
+ if (kn == 0)
+ {
+ /* Return -1 if no load average information is available. */
+ nelem = 0;
+ elem = -1;
+ }
+
+ if (nelem >= 1)
+ loadavg[elem++] = (double) kn->value.ul / FSCALE;
+
+ if (nelem >= 2)
+ {
+ kn = kstat_data_lookup (ksp, "avenrun_5min");
+ if (kn != 0)
+ {
+ loadavg[elem++] = (double) kn->value.ul / FSCALE;
+
+ if (nelem >= 3)
+ {
+ kn = kstat_data_lookup (ksp, "avenrun_15min");
+ if (kn != 0)
+ loadavg[elem++] = (double) kn->value.ul / FSCALE;
+ }
+ }
+ }
-#if !defined (LDAV_DONE) && defined (__linux__)
-#define LDAV_DONE
-#undef LOAD_AVE_TYPE
+ saved_errno = errno;
+ kstat_close (kc);
+ errno = saved_errno;
+# endif /* HAVE_LIBKSTAT */
-#ifndef LINUX_LDAV_FILE
-#define LINUX_LDAV_FILE "/proc/loadavg"
-#endif
+# if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
+ /* HP-UX */
+/* Use pstat_getdynamic() because we don't have to be root. */
+# define LDAV_DONE
+# undef LOAD_AVE_TYPE
- char ldavgbuf[40];
- double load_ave[3];
- int fd, count;
+ struct pst_dynamic dyn_info;
+ if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0)
+ return -1;
+ if (nelem > 0)
+ loadavg[elem++] = dyn_info.psd_avg_1_min;
+ if (nelem > 1)
+ loadavg[elem++] = dyn_info.psd_avg_5_min;
+ if (nelem > 2)
+ loadavg[elem++] = dyn_info.psd_avg_15_min;
+
+# endif /* hpux && HAVE_PSTAT_GETDYNAMIC */
+
+# if ! defined LDAV_DONE && defined HAVE_LIBPERFSTAT /* AIX */
+# define LDAV_DONE
+# undef LOAD_AVE_TYPE
+/* Use perfstat_cpu_total because we don't have to be root. */
+ {
+ perfstat_cpu_total_t cpu_stats;
+ int result = perfstat_cpu_total (NULL, &cpu_stats, sizeof cpu_stats, 1);
+ if (result == -1)
+ return result;
+ loadavg[0] = cpu_stats.loadavg[0] / (double)(1 << SBITS);
+ loadavg[1] = cpu_stats.loadavg[1] / (double)(1 << SBITS);
+ loadavg[2] = cpu_stats.loadavg[2] / (double)(1 << SBITS);
+ elem = 3;
+ }
+# endif
+
+# if !defined (LDAV_DONE) && (defined (__linux__) || defined (__CYGWIN__))
+ /* Linux without glibc, Cygwin */
+# define LDAV_DONE
+# undef LOAD_AVE_TYPE
+
+# ifndef LINUX_LDAV_FILE
+# define LINUX_LDAV_FILE "/proc/loadavg"
+# endif
+
+ char ldavgbuf[3 * (INT_STRLEN_BOUND (int) + sizeof ".00 ")];
+ char const *ptr = ldavgbuf;
+ int fd, count, saved_errno;
fd = open (LINUX_LDAV_FILE, O_RDONLY);
if (fd == -1)
return -1;
- count = read (fd, ldavgbuf, 40);
+ count = read (fd, ldavgbuf, sizeof ldavgbuf - 1);
+ saved_errno = errno;
(void) close (fd);
+ errno = saved_errno;
if (count <= 0)
return -1;
+ ldavgbuf[count] = '\0';
- count = sscanf (ldavgbuf, "%lf %lf %lf",
- &load_ave[0], &load_ave[1], &load_ave[2]);
- if (count < 1)
- return -1;
+ for (elem = 0; elem < nelem; elem++)
+ {
+ double numerator = 0;
+ double denominator = 1;
+
+ while (*ptr == ' ')
+ ptr++;
- for (elem = 0; elem < nelem && elem < count; elem++)
- loadavg[elem] = load_ave[elem];
+ /* Finish if this number is missing, and report an error if all
+ were missing. */
+ if (! ('0' <= *ptr && *ptr <= '9'))
+ {
+ if (elem == 0)
+ {
+ errno = ENOTSUP;
+ return -1;
+ }
+ break;
+ }
+
+ while ('0' <= *ptr && *ptr <= '9')
+ numerator = 10 * numerator + (*ptr++ - '0');
+
+ if (*ptr == '.')
+ for (ptr++; '0' <= *ptr && *ptr <= '9'; ptr++)
+ numerator = 10 * numerator + (*ptr - '0'), denominator *= 10;
+
+ loadavg[elem++] = numerator / denominator;
+ }
return elem;
-#endif /* __linux__ */
+# endif /* __linux__ || __CYGWIN__ */
-#if !defined (LDAV_DONE) && defined (__NetBSD__)
-#define LDAV_DONE
-#undef LOAD_AVE_TYPE
+# if !defined (LDAV_DONE) && defined (__NetBSD__) /* NetBSD < 0.9 */
+# define LDAV_DONE
+# undef LOAD_AVE_TYPE
-#ifndef NETBSD_LDAV_FILE
-#define NETBSD_LDAV_FILE "/kern/loadavg"
-#endif
+# ifndef NETBSD_LDAV_FILE
+# define NETBSD_LDAV_FILE "/kern/loadavg"
+# endif
unsigned long int load_ave[3], scale;
int count;
if (fp == NULL)
return -1;
count = fscanf (fp, "%lu %lu %lu %lu\n",
- &load_ave[0], &load_ave[1], &load_ave[2],
- &scale);
+ &load_ave[0], &load_ave[1], &load_ave[2],
+ &scale);
(void) fclose (fp);
if (count != 4)
- return -1;
+ {
+ errno = ENOTSUP;
+ return -1;
+ }
for (elem = 0; elem < nelem; elem++)
loadavg[elem] = (double) load_ave[elem] / (double) scale;
return elem;
-#endif /* __NetBSD__ */
+# endif /* __NetBSD__ */
-#if !defined (LDAV_DONE) && defined (NeXT)
-#define LDAV_DONE
+# if !defined (LDAV_DONE) && defined (NeXT) /* NeXTStep */
+# define LDAV_DONE
/* The NeXT code was adapted from iscreen 3.2. */
host_t host;
struct processor_set_basic_info info;
- unsigned info_count;
+ unsigned int info_count;
/* We only know how to get the 1-minute average for this system,
so even if the caller asks for more than 1, we only return 1. */
if (!getloadavg_initialized)
{
if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
- getloadavg_initialized = 1;
+ getloadavg_initialized = true;
}
if (getloadavg_initialized)
{
info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host,
- (processor_set_info_t) &info, &info_count)
- != KERN_SUCCESS)
- getloadavg_initialized = 0;
+ (processor_set_info_t) &info, &info_count)
+ != KERN_SUCCESS)
+ getloadavg_initialized = false;
else
- {
- if (nelem > 0)
- loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
- }
+ {
+ if (nelem > 0)
+ loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
+ }
}
if (!getloadavg_initialized)
- return -1;
-#endif /* NeXT */
+ {
+ errno = ENOTSUP;
+ return -1;
+ }
+# endif /* NeXT */
-#if !defined (LDAV_DONE) && defined (UMAX)
-#define LDAV_DONE
+# if !defined (LDAV_DONE) && defined (UMAX)
+# define LDAV_DONE
/* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not
have a /dev/kmem. Information about the workings of the running kernel
can be gathered with inq_stats system calls.
desc.sd_size = sizeof conf;
if (inq_stats (1, &desc))
- return -1;
+ return -1;
c = 0;
for (i = 0; i < conf.config_maxclass; ++i)
- {
- struct class_stats stats;
- bzero ((char *) &stats, sizeof stats);
+ {
+ struct class_stats stats;
+ memset (&stats, 0, sizeof stats);
- desc.sd_type = CPUTYPE_CLASS;
- desc.sd_objid = i;
- desc.sd_addr = (char *) &stats;
- desc.sd_size = sizeof stats;
+ desc.sd_type = CPUTYPE_CLASS;
+ desc.sd_objid = i;
+ desc.sd_addr = (char *) &stats;
+ desc.sd_size = sizeof stats;
- if (inq_stats (1, &desc))
- return -1;
+ if (inq_stats (1, &desc))
+ return -1;
- c += stats.class_numcpus;
- }
+ c += stats.class_numcpus;
+ }
cpus = c;
samples = cpus < 2 ? 3 : (2 * cpus / 3);
}
{
load += proc_sum_data.ps_nrun[j];
if (j++ == PS_NRUNSIZE)
- j = 0;
+ j = 0;
}
if (nelem > 0)
loadavg[elem++] = load / samples / cpus;
-#endif /* UMAX */
+# endif /* UMAX */
-#if !defined (LDAV_DONE) && defined (DGUX)
-#define LDAV_DONE
+# if !defined (LDAV_DONE) && defined (DGUX)
+# define LDAV_DONE
/* This call can return -1 for an error, but with good args
it's not supposed to fail. The first argument is for no
- apparent reason of type `long int *'. */
+ apparent reason of type 'long int *'. */
dg_sys_info ((long int *) &load_info,
- DG_SYS_INFO_LOAD_INFO_TYPE,
- DG_SYS_INFO_LOAD_VERSION_0);
+ DG_SYS_INFO_LOAD_INFO_TYPE,
+ DG_SYS_INFO_LOAD_VERSION_0);
if (nelem > 0)
loadavg[elem++] = load_info.one_minute;
loadavg[elem++] = load_info.five_minute;
if (nelem > 2)
loadavg[elem++] = load_info.fifteen_minute;
-#endif /* DGUX */
+# endif /* DGUX */
-#if !defined (LDAV_DONE) && defined (apollo)
-#define LDAV_DONE
+# if !defined (LDAV_DONE) && defined (apollo)
+# define LDAV_DONE
/* Apollo code from lisch@mentorg.com (Ray Lischner).
This system call is not documented. The load average is obtained as
loadavg[elem++] = load_ave[1] / 65536.0;
if (nelem > 2)
loadavg[elem++] = load_ave[2] / 65536.0;
-#endif /* apollo */
+# endif /* apollo */
-#if !defined (LDAV_DONE) && defined (OSF_MIPS)
-#define LDAV_DONE
+# if !defined (LDAV_DONE) && defined (OSF_MIPS)
+# define LDAV_DONE
struct tbl_loadavg load_ave;
table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
= (load_ave.tl_lscale == 0
? load_ave.tl_avenrun.d[0]
: (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale));
-#endif /* OSF_MIPS */
+# endif /* OSF_MIPS */
-#if !defined (LDAV_DONE) && defined(MSDOS)
-#define LDAV_DONE
+# if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32))
+ /* DJGPP */
+# define LDAV_DONE
/* A faithful emulation is going to have to be saved for a rainy day. */
- for ( ; elem < nelem; elem++)
+ for ( ; elem < nelem; elem++)
{
loadavg[elem] = 0.0;
}
-#endif /* MSDOS */
+# endif /* __MSDOS__ || WINDOWS32 */
-#if !defined (LDAV_DONE) && defined (OSF_ALPHA)
-#define LDAV_DONE
+# if !defined (LDAV_DONE) && defined (OSF_ALPHA) /* OSF/1 */
+# define LDAV_DONE
struct tbl_loadavg load_ave;
table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
for (elem = 0; elem < nelem; elem++)
loadavg[elem]
= (load_ave.tl_lscale == 0
- ? load_ave.tl_avenrun.d[elem]
- : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
-#endif /* OSF_ALPHA */
+ ? load_ave.tl_avenrun.d[elem]
+ : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
+# endif /* OSF_ALPHA */
-#if !defined (LDAV_DONE) && defined (VMS)
+# if ! defined LDAV_DONE && defined __VMS /* VMS */
/* VMS specific code -- read from the Load Ave driver. */
LOAD_AVE_TYPE load_ave[3];
- static int getloadavg_initialized = 0;
-#ifdef eunice
+ static bool getloadavg_initialized;
+# ifdef eunice
struct
{
int dsc$w_length;
char *dsc$a_pointer;
} descriptor;
-#endif
+# endif
/* Ensure that there is a channel open to the load ave device. */
if (!getloadavg_initialized)
{
/* Attempt to open the channel. */
-#ifdef eunice
+# ifdef eunice
descriptor.dsc$w_length = 18;
descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE";
-#else
+# else
$DESCRIPTOR (descriptor, "LAV0:");
-#endif
+# endif
if (sys$assign (&descriptor, &channel, 0, 0) & 1)
- getloadavg_initialized = 1;
+ getloadavg_initialized = true;
}
/* Read the load average vector. */
if (getloadavg_initialized
&& !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0,
- load_ave, 12, 0, 0, 0, 0) & 1))
+ load_ave, 12, 0, 0, 0, 0) & 1))
{
sys$dassgn (channel);
- getloadavg_initialized = 0;
+ getloadavg_initialized = false;
}
if (!getloadavg_initialized)
- return -1;
-#endif /* VMS */
+ {
+ errno = ENOTSUP;
+ return -1;
+ }
+# endif /* ! defined LDAV_DONE && defined __VMS */
-#if !defined (LDAV_DONE) && defined(LOAD_AVE_TYPE) && !defined(VMS)
+# if ! defined LDAV_DONE && defined LOAD_AVE_TYPE && ! defined __VMS
+ /* IRIX, other old systems */
/* UNIX-specific code -- read the average from /dev/kmem. */
-#define LDAV_PRIVILEGED /* This code requires special installation. */
+# define LDAV_PRIVILEGED /* This code requires special installation. */
LOAD_AVE_TYPE load_ave[3];
/* Get the address of LDAV_SYMBOL. */
if (offset == 0)
{
-#ifndef sgi
-#ifndef NLIST_STRUCT
- strcpy (nl[0].n_name, LDAV_SYMBOL);
- strcpy (nl[1].n_name, "");
-#else /* NLIST_STRUCT */
-#ifdef NLIST_NAME_UNION
- nl[0].n_un.n_name = LDAV_SYMBOL;
- nl[1].n_un.n_name = 0;
-#else /* not NLIST_NAME_UNION */
- nl[0].n_name = LDAV_SYMBOL;
- nl[1].n_name = 0;
-#endif /* not NLIST_NAME_UNION */
-#endif /* NLIST_STRUCT */
-
-#ifndef SUNOS_5
+# ifndef sgi
+# if ! defined NLIST_STRUCT || ! defined N_NAME_POINTER
+ strcpy (name_list[0].n_name, LDAV_SYMBOL);
+ strcpy (name_list[1].n_name, "");
+# else /* NLIST_STRUCT */
+# ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME
+ name_list[0].n_un.n_name = LDAV_SYMBOL;
+ name_list[1].n_un.n_name = 0;
+# else /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
+ name_list[0].n_name = LDAV_SYMBOL;
+ name_list[1].n_name = 0;
+# endif /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
+# endif /* NLIST_STRUCT */
+
+# ifndef SUNOS_5
if (
-#if !(defined (_AIX) && !defined (ps2))
- nlist (KERNEL_FILE, nl)
-#else /* _AIX */
- knlist (nl, 1, sizeof (nl[0]))
-#endif
- >= 0)
- /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
- {
-#ifdef FIXUP_KERNEL_SYMBOL_ADDR
- FIXUP_KERNEL_SYMBOL_ADDR (nl);
-#endif
- offset = nl[0].n_value;
- }
-#endif /* !SUNOS_5 */
-#else /* sgi */
- int ldav_off;
-
- ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
- if (ldav_off != -1)
- offset = (long) ldav_off & 0x7fffffff;
-#endif /* sgi */
- }
+# if !(defined (_AIX) && !defined (ps2))
+ nlist (KERNEL_FILE, name_list)
+# else /* _AIX */
+ knlist (name_list, 1, sizeof (name_list[0]))
+# endif
+ >= 0)
+ /* Omit "&& name_list[0].n_type != 0 " -- it breaks on Sun386i. */
+ {
+# ifdef FIXUP_KERNEL_SYMBOL_ADDR
+ FIXUP_KERNEL_SYMBOL_ADDR (name_list);
+# endif
+ offset = name_list[0].n_value;
+ }
+# endif /* !SUNOS_5 */
+# else /* sgi */
+ ptrdiff_t ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
+ if (ldav_off != -1)
+ offset = (long int) ldav_off & 0x7fffffff;
+# endif /* sgi */
+ }
/* Make sure we have /dev/kmem open. */
if (!getloadavg_initialized)
{
-#ifndef SUNOS_5
- channel = open ("/dev/kmem", 0);
- if (channel >= 0)
- {
- /* Set the channel to close on exec, so it does not
- litter any child's descriptor table. */
-#ifdef FD_SETFD
-#ifndef FD_CLOEXEC
-#define FD_CLOEXEC 1
-#endif
- (void) fcntl (channel, F_SETFD, FD_CLOEXEC);
-#endif
- getloadavg_initialized = 1;
- }
-#else /* SUNOS_5 */
+# ifndef SUNOS_5
+ /* Set the channel to close on exec, so it does not
+ litter any child's descriptor table. */
+# ifndef O_CLOEXEC
+# define O_CLOEXEC 0
+# endif
+ int fd = open ("/dev/kmem", O_RDONLY | O_CLOEXEC);
+ if (0 <= fd)
+ {
+# if F_DUPFD_CLOEXEC
+ if (fd <= STDERR_FILENO)
+ {
+ int fd1 = fcntl (fd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
+ close (fd);
+ fd = fd1;
+ }
+# endif
+ if (0 <= fd)
+ {
+ channel = fd;
+ getloadavg_initialized = true;
+ }
+ }
+# else /* SUNOS_5 */
/* We pass 0 for the kernel, corefile, and swapfile names
- to use the currently running kernel. */
+ to use the currently running kernel. */
kd = kvm_open (0, 0, 0, O_RDONLY, 0);
- if (kd != 0)
- {
- /* nlist the currently running kernel. */
- kvm_nlist (kd, nl);
- offset = nl[0].n_value;
- getloadavg_initialized = 1;
- }
-#endif /* SUNOS_5 */
+ if (kd != 0)
+ {
+ /* nlist the currently running kernel. */
+ kvm_nlist (kd, name_list);
+ offset = name_list[0].n_value;
+ getloadavg_initialized = true;
+ }
+# endif /* SUNOS_5 */
}
/* If we can, get the load average values. */
if (offset && getloadavg_initialized)
{
/* Try to read the load. */
-#ifndef SUNOS_5
+# ifndef SUNOS_5
if (lseek (channel, offset, 0) == -1L
- || read (channel, (char *) load_ave, sizeof (load_ave))
- != sizeof (load_ave))
- {
- close (channel);
- getloadavg_initialized = 0;
- }
-#else /* SUNOS_5 */
+ || read (channel, (char *) load_ave, sizeof (load_ave))
+ != sizeof (load_ave))
+ {
+ close (channel);
+ getloadavg_initialized = false;
+ }
+# else /* SUNOS_5 */
if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave))
- != sizeof (load_ave))
+ != sizeof (load_ave))
{
kvm_close (kd);
- getloadavg_initialized = 0;
- }
-#endif /* SUNOS_5 */
+ getloadavg_initialized = false;
+ }
+# endif /* SUNOS_5 */
}
if (offset == 0 || !getloadavg_initialized)
- return -1;
-#endif /* LOAD_AVE_TYPE and not VMS */
+ {
+ errno = ENOTSUP;
+ return -1;
+ }
+# endif /* ! defined LDAV_DONE && defined LOAD_AVE_TYPE && ! defined __VMS */
-#if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */
+# if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */
if (nelem > 0)
loadavg[elem++] = LDAV_CVT (load_ave[0]);
if (nelem > 1)
if (nelem > 2)
loadavg[elem++] = LDAV_CVT (load_ave[2]);
-#define LDAV_DONE
-#endif /* !LDAV_DONE && LOAD_AVE_TYPE */
+# define LDAV_DONE
+# endif /* !LDAV_DONE && LOAD_AVE_TYPE */
-#ifdef LDAV_DONE
+# if !defined LDAV_DONE
+ errno = ENOSYS;
+ elem = -1;
+# endif
return elem;
-#else
- /* Set errno to zero to indicate that there was no particular error;
- this function just can't work at all on this system. */
- errno = 0;
- return -1;
-#endif
-}
-
-#endif /* ! HAVE_GETLOADAVG */
-\f
-#ifdef TEST
-void
-main (argc, argv)
- int argc;
- char **argv;
-{
- int naptime = 0;
-
- if (argc > 1)
- naptime = atoi (argv[1]);
-
- while (1)
- {
- double avg[3];
- int loads;
-
- errno = 0; /* Don't be misled if it doesn't set errno. */
- loads = getloadavg (avg, 3);
- if (loads == -1)
- {
- perror ("Error getting load average");
- exit (1);
- }
- if (loads > 0)
- printf ("1-minute: %f ", avg[0]);
- if (loads > 1)
- printf ("5-minute: %f ", avg[1]);
- if (loads > 2)
- printf ("15-minute: %f ", avg[2]);
- if (loads > 0)
- putchar ('\n');
-
- if (naptime == 0)
- break;
- sleep (naptime);
- }
-
- exit (0);
}
-#endif /* TEST */
projects / gnulib.git / blobdiff