1 /* Get the system load averages.
3 Copyright (C) 1985, 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994,
4 1995, 1997, 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
6 NOTE: The canonical source of this file is maintained with gnulib.
7 Bugs can be reported to bug-gnulib@gnu.org.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
24 /* Compile-time symbols that this file uses:
26 HAVE_PSTAT_GETDYNAMIC Define this if your system has the
27 pstat_getdynamic function. I think it
28 is unique to HPUX9. The best way to get the
29 definition is through the AC_FUNC_GETLOADAVG
30 macro that comes with autoconf 2.13 or newer.
31 If that isn't an option, then just put
32 AC_CHECK_FUNCS(pstat_getdynamic) in your
34 FIXUP_KERNEL_SYMBOL_ADDR() Adjust address in returned struct nlist.
35 KERNEL_FILE Name of the kernel file to nlist.
36 LDAV_CVT() Scale the load average from the kernel.
38 LDAV_SYMBOL Name of kernel symbol giving load average.
39 LOAD_AVE_TYPE Type of the load average array in the kernel.
40 Must be defined unless one of
41 apollo, DGUX, NeXT, or UMAX is defined;
43 otherwise, no load average is available.
44 HAVE_NLIST_H nlist.h is available. NLIST_STRUCT defaults
46 NLIST_STRUCT Include nlist.h, not a.out.h, and
47 the nlist n_name element is a pointer,
49 HAVE_STRUCT_NLIST_N_UN_N_NAME `n_un.n_name' is member of `struct nlist'.
50 LINUX_LDAV_FILE [__linux__]: File containing load averages.
52 Specific system predefines this file uses, aside from setting
53 default values if not emacs:
56 BSD Real BSD, not just BSD-like.
59 eunice UNIX emulator under VMS.
61 __MSDOS__ No-op for MSDOS.
64 sequent Sequent Dynix 3.x.x (BSD)
65 _SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
66 sony_news NEWS-OS (works at least for 4.1C)
70 WINDOWS32 No-op for Windows95/NT.
71 __linux__ Linux: assumes /proc file system mounted.
72 Support from Michael K. Johnson.
73 __NetBSD__ NetBSD: assumes /kern file system mounted.
75 In addition, to avoid nesting many #ifdefs, we internally set
76 LDAV_DONE to indicate that the load average has been computed.
78 We also #define LDAV_PRIVILEGED if a program will require
79 special installation to be able to call getloadavg. */
81 /* This should always be first. */
91 /* Exclude all the code except the test program at the end
92 if the system has its own `getloadavg' function. */
94 #ifndef HAVE_GETLOADAVG
96 # include <sys/types.h>
98 /* Both the Emacs and non-Emacs sections want this. Some
99 configuration files' definitions for the LOAD_AVE_CVT macro (like
100 sparc.h's) use macros like FSCALE, defined here. */
101 # if defined (unix) || defined (__unix)
102 # include <sys/param.h>
105 # include "c-strtod.h"
106 # include "cloexec.h"
107 # include "intprops.h"
110 /* The existing Emacs configuration files define a macro called
111 LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and
112 returns the load average multiplied by 100. What we actually want
113 is a macro called LDAV_CVT, which returns the load average as an
116 For backwards compatibility, we'll define LDAV_CVT in terms of
117 LOAD_AVE_CVT, but future machine config files should just define
118 LDAV_CVT directly. */
120 # if !defined (LDAV_CVT) && defined (LOAD_AVE_CVT)
121 # define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0)
124 # if !defined (BSD) && defined (ultrix)
125 /* Ultrix behaves like BSD on Vaxen. */
130 /* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which
131 conflicts with the definition understood in this file, that this
135 /* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being
136 defined to mean that the nlist method should be used, which is not true. */
140 /* Same issues as for NeXT apply to the HURD-based GNU system. */
144 # endif /* __GNU__ */
146 /* Set values that are different from the defaults, which are
147 set a little farther down with #ifndef. */
150 /* Some shorthands. */
152 # if defined (HPUX) && !defined (hpux)
156 # if defined (__hpux) && !defined (hpux)
160 # if defined (__sun) && !defined (sun)
164 # if defined (hp300) && !defined (hpux)
168 # if defined (ultrix) && defined (mips)
172 # if defined (__SVR4) && !defined (SVR4)
176 # if (defined (sun) && defined (SVR4)) || defined (SOLARIS2)
180 # if defined (__osf__) && (defined (__alpha) || defined (__alpha__))
182 # include <sys/mbuf.h>
183 # include <sys/socket.h>
184 # include <net/route.h>
185 # include <sys/table.h>
188 # if defined (__osf__) && (defined (mips) || defined (__mips__))
190 # include <sys/table.h>
193 /* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
194 default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine
195 that with a couple of other things and we'll have a unique match. */
196 # if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
197 # define tek4300 /* Define by emacs, but not by other users. */
201 /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */
202 # ifndef LOAD_AVE_TYPE
205 # define LOAD_AVE_TYPE long
209 # define LOAD_AVE_TYPE long
213 # define LOAD_AVE_TYPE long
217 # define LOAD_AVE_TYPE long
221 # define LOAD_AVE_TYPE long
225 # define LOAD_AVE_TYPE long
229 # define LOAD_AVE_TYPE long
233 # define LOAD_AVE_TYPE long
237 # define LOAD_AVE_TYPE long
240 # if defined (ardent) && defined (titan)
241 # define LOAD_AVE_TYPE long
245 # define LOAD_AVE_TYPE long
248 # if defined (alliant) && defined (i860) /* Alliant FX/2800 */
249 # define LOAD_AVE_TYPE long
253 # define LOAD_AVE_TYPE long
257 # define LOAD_AVE_TYPE double
259 # define LDAV_CVT(n) (n)
263 # endif /* No LOAD_AVE_TYPE. */
266 /* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1,
267 according to ghazi@noc.rutgers.edu. */
269 # define FSCALE 1024.0
272 # if defined (alliant) && defined (i860) /* Alliant FX/2800 */
273 /* <sys/param.h> defines an incorrect value for FSCALE on an
274 Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */
276 # define FSCALE 100.0
282 /* SunOS and some others define FSCALE in sys/param.h. */
285 # define FSCALE 2048.0
288 # if defined (MIPS) || defined (SVR4) || defined (decstation)
292 # if defined (sgi) || defined (sequent)
293 /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
294 above under #ifdef MIPS. But we want the sgi value. */
296 # define FSCALE 1000.0
299 # if defined (ardent) && defined (titan)
300 # define FSCALE 65536.0
304 # define FSCALE 100.0
308 # define FSCALE 65536.0
311 # endif /* Not FSCALE. */
313 # if !defined (LDAV_CVT) && defined (FSCALE)
314 # define LDAV_CVT(n) (((double) (n)) / FSCALE)
317 # ifndef NLIST_STRUCT
319 # define NLIST_STRUCT
323 # if defined (sgi) || (defined (mips) && !defined (BSD))
324 # define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31))
328 # if !defined (KERNEL_FILE) && defined (sequent)
329 # define KERNEL_FILE "/dynix"
332 # if !defined (KERNEL_FILE) && defined (hpux)
333 # define KERNEL_FILE "/hp-ux"
336 # if !defined (KERNEL_FILE) && (defined (_SEQUENT_) || defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)))
337 # define KERNEL_FILE "/unix"
341 # if !defined (LDAV_SYMBOL) && defined (alliant)
342 # define LDAV_SYMBOL "_Loadavg"
345 # if !defined (LDAV_SYMBOL) && ((defined (hpux) && !defined (hp9000s300)) || defined (_SEQUENT_) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)) || defined (_AIX))
346 # define LDAV_SYMBOL "avenrun"
349 # ifdef HAVE_UNISTD_H
353 /* LOAD_AVE_TYPE should only get defined if we're going to use the
355 # if !defined (LOAD_AVE_TYPE) && (defined (BSD) || defined (LDAV_CVT) || defined (KERNEL_FILE) || defined (LDAV_SYMBOL))
356 # define LOAD_AVE_TYPE double
359 # ifdef LOAD_AVE_TYPE
363 # ifndef NLIST_STRUCT
365 # else /* NLIST_STRUCT */
367 # endif /* NLIST_STRUCT */
375 # if defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
376 # include <sys/pstat.h>
380 # define KERNEL_FILE "/vmunix"
381 # endif /* KERNEL_FILE */
384 # define LDAV_SYMBOL "_avenrun"
385 # endif /* LDAV_SYMBOL */
386 # endif /* __linux__ */
392 # include <descrip.h>
394 # include <vms/iodef.h>
399 # define LDAV_CVT(n) ((double) (n))
400 # endif /* !LDAV_CVT */
402 # endif /* LOAD_AVE_TYPE */
404 # if defined (__GNU__) && !defined (NeXT)
405 /* Note that NeXT Openstep defines __GNU__ even though it should not. */
406 /* GNU system acts much like NeXT, for load average purposes,
409 # define host_self mach_host_self
413 # ifdef HAVE_MACH_MACH_H
414 # include <mach/mach.h>
421 # include <sys/sysmp.h>
426 # include <sys/time.h>
427 # include <sys/wait.h>
428 # include <sys/syscall.h>
431 # include <machine/cpu.h>
432 # include <inq_stats/statistics.h>
433 # include <inq_stats/sysstats.h>
434 # include <inq_stats/cpustats.h>
435 # include <inq_stats/procstats.h>
436 # else /* Not UMAX_43. */
437 # include <sys/sysdefs.h>
438 # include <sys/statistics.h>
439 # include <sys/sysstats.h>
440 # include <sys/cpudefs.h>
441 # include <sys/cpustats.h>
442 # include <sys/procstats.h>
443 # endif /* Not UMAX_43. */
447 # include <sys/dg_sys_info.h>
452 # include "unistd-safer.h"
454 /* Avoid static vars inside a function since in HPUX they dump as pure. */
457 static processor_set_t default_set;
458 static bool getloadavg_initialized;
462 static unsigned int cpus = 0;
463 static unsigned int samples;
467 static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
470 # if !defined (HAVE_LIBKSTAT) && defined (LOAD_AVE_TYPE)
471 /* File descriptor open to /dev/kmem or VMS load ave driver. */
473 /* True iff channel is valid. */
474 static bool getloadavg_initialized;
475 /* Offset in kmem to seek to read load average, or 0 means invalid. */
478 # if !defined (VMS) && !defined (sgi) && !defined (__linux__)
479 static struct nlist nl[2];
480 # endif /* Not VMS or sgi */
484 # endif /* SUNOS_5 */
486 # endif /* LOAD_AVE_TYPE && !HAVE_LIBKSTAT */
488 /* Put the 1 minute, 5 minute and 15 minute load averages
489 into the first NELEM elements of LOADAVG.
490 Return the number written (never more than 3, but may be less than NELEM),
491 or -1 if an error occurred. */
494 getloadavg (double loadavg[], int nelem)
496 int elem = 0; /* Return value. */
498 # ifdef NO_GET_LOAD_AVG
500 /* Set errno to zero to indicate that there was no particular error;
501 this function just can't work at all on this system. */
506 # if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT)
507 /* Use libkstat because we don't have to be root. */
516 ksp = kstat_lookup (kc, "unix", 0, "system_misc");
519 if (kstat_read (kc, ksp, 0) == -1)
523 kn = kstat_data_lookup (ksp, "avenrun_1min");
526 /* Return -1 if no load average information is available. */
532 loadavg[elem++] = (double) kn->value.ul / FSCALE;
536 kn = kstat_data_lookup (ksp, "avenrun_5min");
539 loadavg[elem++] = (double) kn->value.ul / FSCALE;
543 kn = kstat_data_lookup (ksp, "avenrun_15min");
545 loadavg[elem++] = (double) kn->value.ul / FSCALE;
551 # endif /* HAVE_LIBKSTAT */
553 # if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
554 /* Use pstat_getdynamic() because we don't have to be root. */
556 # undef LOAD_AVE_TYPE
558 struct pst_dynamic dyn_info;
559 if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0)
562 loadavg[elem++] = dyn_info.psd_avg_1_min;
564 loadavg[elem++] = dyn_info.psd_avg_5_min;
566 loadavg[elem++] = dyn_info.psd_avg_15_min;
568 # endif /* hpux && HAVE_PSTAT_GETDYNAMIC */
570 # if !defined (LDAV_DONE) && defined (__linux__)
572 # undef LOAD_AVE_TYPE
574 # ifndef LINUX_LDAV_FILE
575 # define LINUX_LDAV_FILE "/proc/loadavg"
578 char ldavgbuf[3 * (INT_STRLEN_BOUND (long int) + sizeof ".00")];
579 char const *ptr = ldavgbuf;
582 fd = open (LINUX_LDAV_FILE, O_RDONLY);
585 count = read (fd, ldavgbuf, sizeof ldavgbuf - 1);
589 ldavgbuf[count] = '\0';
591 for (elem = 0; elem < nelem; elem++)
594 double d = c_strtod (ptr, &endptr);
607 # endif /* __linux__ */
609 # if !defined (LDAV_DONE) && defined (__NetBSD__)
611 # undef LOAD_AVE_TYPE
613 # ifndef NETBSD_LDAV_FILE
614 # define NETBSD_LDAV_FILE "/kern/loadavg"
617 unsigned long int load_ave[3], scale;
621 fp = fopen (NETBSD_LDAV_FILE, "r");
624 count = fscanf (fp, "%lu %lu %lu %lu\n",
625 &load_ave[0], &load_ave[1], &load_ave[2],
631 for (elem = 0; elem < nelem; elem++)
632 loadavg[elem] = (double) load_ave[elem] / (double) scale;
636 # endif /* __NetBSD__ */
638 # if !defined (LDAV_DONE) && defined (NeXT)
640 /* The NeXT code was adapted from iscreen 3.2. */
643 struct processor_set_basic_info info;
644 unsigned int info_count;
646 /* We only know how to get the 1-minute average for this system,
647 so even if the caller asks for more than 1, we only return 1. */
649 if (!getloadavg_initialized)
651 if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
652 getloadavg_initialized = true;
655 if (getloadavg_initialized)
657 info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
658 if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host,
659 (processor_set_info_t) &info, &info_count)
661 getloadavg_initialized = false;
665 loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
669 if (!getloadavg_initialized)
673 # if !defined (LDAV_DONE) && defined (UMAX)
675 /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not
676 have a /dev/kmem. Information about the workings of the running kernel
677 can be gathered with inq_stats system calls.
678 We only know how to get the 1-minute average for this system. */
680 struct proc_summary proc_sum_data;
681 struct stat_descr proc_info;
683 register unsigned int i, j;
687 register unsigned int c, i;
688 struct cpu_config conf;
689 struct stat_descr desc;
692 desc.sd_subsys = SUBSYS_CPU;
693 desc.sd_type = CPUTYPE_CONFIG;
694 desc.sd_addr = (char *) &conf;
695 desc.sd_size = sizeof conf;
697 if (inq_stats (1, &desc))
701 for (i = 0; i < conf.config_maxclass; ++i)
703 struct class_stats stats;
704 bzero ((char *) &stats, sizeof stats);
706 desc.sd_type = CPUTYPE_CLASS;
708 desc.sd_addr = (char *) &stats;
709 desc.sd_size = sizeof stats;
711 if (inq_stats (1, &desc))
714 c += stats.class_numcpus;
717 samples = cpus < 2 ? 3 : (2 * cpus / 3);
720 proc_info.sd_next = 0;
721 proc_info.sd_subsys = SUBSYS_PROC;
722 proc_info.sd_type = PROCTYPE_SUMMARY;
723 proc_info.sd_addr = (char *) &proc_sum_data;
724 proc_info.sd_size = sizeof (struct proc_summary);
725 proc_info.sd_sizeused = 0;
727 if (inq_stats (1, &proc_info) != 0)
730 load = proc_sum_data.ps_nrunnable;
732 for (i = samples - 1; i > 0; --i)
734 load += proc_sum_data.ps_nrun[j];
735 if (j++ == PS_NRUNSIZE)
740 loadavg[elem++] = load / samples / cpus;
743 # if !defined (LDAV_DONE) && defined (DGUX)
745 /* This call can return -1 for an error, but with good args
746 it's not supposed to fail. The first argument is for no
747 apparent reason of type `long int *'. */
748 dg_sys_info ((long int *) &load_info,
749 DG_SYS_INFO_LOAD_INFO_TYPE,
750 DG_SYS_INFO_LOAD_VERSION_0);
753 loadavg[elem++] = load_info.one_minute;
755 loadavg[elem++] = load_info.five_minute;
757 loadavg[elem++] = load_info.fifteen_minute;
760 # if !defined (LDAV_DONE) && defined (apollo)
762 /* Apollo code from lisch@mentorg.com (Ray Lischner).
764 This system call is not documented. The load average is obtained as
765 three long integers, for the load average over the past minute,
766 five minutes, and fifteen minutes. Each value is a scaled integer,
767 with 16 bits of integer part and 16 bits of fraction part.
769 I'm not sure which operating system first supported this system call,
770 but I know that SR10.2 supports it. */
772 extern void proc1_$get_loadav ();
773 unsigned long load_ave[3];
775 proc1_$get_loadav (load_ave);
778 loadavg[elem++] = load_ave[0] / 65536.0;
780 loadavg[elem++] = load_ave[1] / 65536.0;
782 loadavg[elem++] = load_ave[2] / 65536.0;
785 # if !defined (LDAV_DONE) && defined (OSF_MIPS)
788 struct tbl_loadavg load_ave;
789 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
791 = (load_ave.tl_lscale == 0
792 ? load_ave.tl_avenrun.d[0]
793 : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale));
794 # endif /* OSF_MIPS */
796 # if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32))
799 /* A faithful emulation is going to have to be saved for a rainy day. */
800 for ( ; elem < nelem; elem++)
804 # endif /* __MSDOS__ || WINDOWS32 */
806 # if !defined (LDAV_DONE) && defined (OSF_ALPHA)
809 struct tbl_loadavg load_ave;
810 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
811 for (elem = 0; elem < nelem; elem++)
813 = (load_ave.tl_lscale == 0
814 ? load_ave.tl_avenrun.d[elem]
815 : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
816 # endif /* OSF_ALPHA */
818 # if !defined (LDAV_DONE) && defined (VMS)
819 /* VMS specific code -- read from the Load Ave driver. */
821 LOAD_AVE_TYPE load_ave[3];
822 static bool getloadavg_initialized;
831 /* Ensure that there is a channel open to the load ave device. */
832 if (!getloadavg_initialized)
834 /* Attempt to open the channel. */
836 descriptor.dsc$w_length = 18;
837 descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE";
839 $DESCRIPTOR (descriptor, "LAV0:");
841 if (sys$assign (&descriptor, &channel, 0, 0) & 1)
842 getloadavg_initialized = true;
845 /* Read the load average vector. */
846 if (getloadavg_initialized
847 && !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0,
848 load_ave, 12, 0, 0, 0, 0) & 1))
850 sys$dassgn (channel);
851 getloadavg_initialized = false;
854 if (!getloadavg_initialized)
858 # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) && !defined (VMS)
860 /* UNIX-specific code -- read the average from /dev/kmem. */
862 # define LDAV_PRIVILEGED /* This code requires special installation. */
864 LOAD_AVE_TYPE load_ave[3];
866 /* Get the address of LDAV_SYMBOL. */
870 # ifndef NLIST_STRUCT
871 strcpy (nl[0].n_name, LDAV_SYMBOL);
872 strcpy (nl[1].n_name, "");
873 # else /* NLIST_STRUCT */
874 # ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME
875 nl[0].n_un.n_name = LDAV_SYMBOL;
876 nl[1].n_un.n_name = 0;
877 # else /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
878 nl[0].n_name = LDAV_SYMBOL;
880 # endif /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
881 # endif /* NLIST_STRUCT */
885 # if !(defined (_AIX) && !defined (ps2))
886 nlist (KERNEL_FILE, nl)
888 knlist (nl, 1, sizeof (nl[0]))
891 /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
893 # ifdef FIXUP_KERNEL_SYMBOL_ADDR
894 FIXUP_KERNEL_SYMBOL_ADDR (nl);
896 offset = nl[0].n_value;
898 # endif /* !SUNOS_5 */
902 ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
904 offset = (long int) ldav_off & 0x7fffffff;
908 /* Make sure we have /dev/kmem open. */
909 if (!getloadavg_initialized)
912 channel = fd_safer (open ("/dev/kmem", O_RDONLY));
915 /* Set the channel to close on exec, so it does not
916 litter any child's descriptor table. */
917 set_cloexec_flag (channel, true);
918 getloadavg_initialized = true;
921 /* We pass 0 for the kernel, corefile, and swapfile names
922 to use the currently running kernel. */
923 kd = kvm_open (0, 0, 0, O_RDONLY, 0);
926 /* nlist the currently running kernel. */
928 offset = nl[0].n_value;
929 getloadavg_initialized = true;
931 # endif /* SUNOS_5 */
934 /* If we can, get the load average values. */
935 if (offset && getloadavg_initialized)
937 /* Try to read the load. */
939 if (lseek (channel, offset, 0) == -1L
940 || read (channel, (char *) load_ave, sizeof (load_ave))
941 != sizeof (load_ave))
944 getloadavg_initialized = false;
947 if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave))
948 != sizeof (load_ave))
951 getloadavg_initialized = false;
953 # endif /* SUNOS_5 */
956 if (offset == 0 || !getloadavg_initialized)
958 # endif /* LOAD_AVE_TYPE and not VMS */
960 # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */
962 loadavg[elem++] = LDAV_CVT (load_ave[0]);
964 loadavg[elem++] = LDAV_CVT (load_ave[1]);
966 loadavg[elem++] = LDAV_CVT (load_ave[2]);
969 # endif /* !LDAV_DONE && LOAD_AVE_TYPE */
974 /* Set errno to zero to indicate that there was no particular error;
975 this function just can't work at all on this system. */
981 #endif /* ! HAVE_GETLOADAVG */
985 main (int argc, char **argv)
990 naptime = atoi (argv[1]);
997 errno = 0; /* Don't be misled if it doesn't set errno. */
998 loads = getloadavg (avg, 3);
1001 perror ("Error getting load average");
1002 return EXIT_FAILURE;
1005 printf ("1-minute: %f ", avg[0]);
1007 printf ("5-minute: %f ", avg[1]);
1009 printf ("15-minute: %f ", avg[2]);
1018 return EXIT_SUCCESS;