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diff --git a/gl/getloadavg.c b/gl/getloadavg.c
index 5a4005cee0b9e5d6af9ef8165582a1f440598956..c6d782b4e2ed1437dbba701502c1f96bbdcf36b0 100644 (file)
--- a/gl/getloadavg.c
+++ b/gl/getloadavg.c
/* Get the system load averages.
- Copyright (C) 1985, 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994,
- 1995, 1997, 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free
- Software Foundation, Inc.
+ Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2010 Free Software
+ Foundation, Inc.
NOTE: The canonical source of this file is maintained with gnulib.
Bugs can be reported to bug-gnulib@gnu.org.
/* Compile-time symbols that this file uses:
- HAVE_PSTAT_GETDYNAMIC Define this if your system has the
+ 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.in file.
+ 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.in 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;
+ 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.
+ 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, and
- the nlist n_name element is a pointer,
- not an array.
+ 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.
+ 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.
+ __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
- 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.
+ 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.
# include "c-strtod.h"
# include "cloexec.h"
# include "intprops.h"
-# include "xalloc.h"
/* The existing Emacs configuration files define a macro called
LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and
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. */
+# define tek4300 /* Define by emacs, but not by other users. */
# endif
# define FSCALE 65536.0
# endif
-# endif /* Not FSCALE. */
+# endif /* Not FSCALE. */
# if !defined (LDAV_CVT) && defined (FSCALE)
# define LDAV_CVT(n) (((double) (n)) / FSCALE)
# endif /* UMAX */
# ifdef DGUX
-static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
+static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
# endif /* DGUX */
# if !defined (HAVE_LIBKSTAT) && defined (LOAD_AVE_TYPE)
int
getloadavg (double loadavg[], int nelem)
{
- int elem = 0; /* Return value. */
+ int elem = 0; /* Return value. */
# ifdef NO_GET_LOAD_AVG
# define LDAV_DONE
{
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;
- }
- }
+ {
+ 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;
+ }
+ }
}
kstat_close (kc);
errno = 0;
d = c_strtod (ptr, &endptr);
if (ptr == endptr || (d == 0 && errno != 0))
- {
- if (elem == 0)
- return -1;
- break;
- }
+ {
+ if (elem == 0)
+ return -1;
+ break;
+ }
loadavg[elem] = d;
ptr = endptr;
}
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;
if (!getloadavg_initialized)
{
if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
- getloadavg_initialized = true;
+ 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 = false;
+ (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)
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;
+ bzero ((char *) &stats, 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)
it's not supposed to fail. The first argument is for no
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;
= (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__) || defined (WINDOWS32))
# define LDAV_DONE
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));
+ ? 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
$DESCRIPTOR (descriptor, "LAV0:");
# endif
if (sys$assign (&descriptor, &channel, 0, 0) & 1)
- getloadavg_initialized = true;
+ 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 = false;
/* 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];
if (offset == 0)
{
# ifndef sgi
-# ifndef NLIST_STRUCT
+# if ! defined NLIST_STRUCT || ! defined N_NAME_POINTER
strcpy (nl[0].n_name, LDAV_SYMBOL);
strcpy (nl[1].n_name, "");
# else /* NLIST_STRUCT */
# ifndef SUNOS_5
if (
# if !(defined (_AIX) && !defined (ps2))
- nlist (KERNEL_FILE, nl)
+ nlist (KERNEL_FILE, nl)
# else /* _AIX */
- knlist (nl, 1, sizeof (nl[0]))
+ knlist (nl, 1, sizeof (nl[0]))
# endif
- >= 0)
- /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
- {
+ >= 0)
+ /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
+ {
# ifdef FIXUP_KERNEL_SYMBOL_ADDR
- FIXUP_KERNEL_SYMBOL_ADDR (nl);
+ FIXUP_KERNEL_SYMBOL_ADDR (nl);
# endif
- offset = nl[0].n_value;
- }
+ 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 int) ldav_off & 0x7fffffff;
+ offset = (long int) ldav_off & 0x7fffffff;
# endif /* sgi */
}
# ifndef SUNOS_5
channel = open ("/dev/kmem", O_RDONLY);
if (channel >= 0)
- {
- /* Set the channel to close on exec, so it does not
- litter any child's descriptor table. */
- set_cloexec_flag (channel, true);
- getloadavg_initialized = true;
- }
+ {
+ /* Set the channel to close on exec, so it does not
+ litter any child's descriptor table. */
+ set_cloexec_flag (channel, true);
+ 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 = true;
- }
+ {
+ /* nlist the currently running kernel. */
+ kvm_nlist (kd, nl);
+ offset = nl[0].n_value;
+ getloadavg_initialized = true;
+ }
# endif /* SUNOS_5 */
}
/* Try to read the load. */
# ifndef SUNOS_5
if (lseek (channel, offset, 0) == -1L
- || read (channel, (char *) load_ave, sizeof (load_ave))
- != sizeof (load_ave))
- {
- close (channel);
- getloadavg_initialized = false;
- }
+ || 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))
- {
- kvm_close (kd);
- getloadavg_initialized = false;
- }
+ != sizeof (load_ave))
+ {
+ kvm_close (kd);
+ getloadavg_initialized = false;
+ }
# endif /* SUNOS_5 */
}
double avg[3];
int loads;
- errno = 0; /* Don't be misled if it doesn't set errno. */
+ errno = 0; /* Don't be misled if it doesn't set errno. */
loads = getloadavg (avg, 3);
if (loads == -1)
- {
- perror ("Error getting load average");
- return EXIT_FAILURE;
- }
+ {
+ perror ("Error getting load average");
+ return EXIT_FAILURE;
+ }
if (loads > 0)
- printf ("1-minute: %f ", avg[0]);
+ printf ("1-minute: %f ", avg[0]);
if (loads > 1)
- printf ("5-minute: %f ", avg[1]);
+ printf ("5-minute: %f ", avg[1]);
if (loads > 2)
- printf ("15-minute: %f ", avg[2]);
+ printf ("15-minute: %f ", avg[2]);
if (loads > 0)
- putchar ('\n');
+ putchar ('\n');
if (naptime == 0)
- break;
+ break;
sleep (naptime);
}