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__, __CYGWIN__]: File containing
53 Specific system predefines this file uses, aside from setting
54 default values if not emacs:
57 BSD Real BSD, not just BSD-like.
60 eunice UNIX emulator under VMS.
62 __MSDOS__ No-op for MSDOS.
65 sequent Sequent Dynix 3.x.x (BSD)
66 _SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
67 sony_news NEWS-OS (works at least for 4.1C)
71 WINDOWS32 No-op for Windows95/NT.
72 __linux__ Linux: assumes /proc file system mounted.
73 Support from Michael K. Johnson.
74 __CYGWIN__ Cygwin emulates linux /proc/loadavg.
75 __NetBSD__ NetBSD: assumes /kern file system mounted.
77 In addition, to avoid nesting many #ifdefs, we internally set
78 LDAV_DONE to indicate that the load average has been computed.
80 We also #define LDAV_PRIVILEGED if a program will require
81 special installation to be able to call getloadavg. */
83 /* This should always be first. */
93 /* Exclude all the code except the test program at the end
94 if the system has its own `getloadavg' function. */
96 #ifndef HAVE_GETLOADAVG
98 # include <sys/types.h>
100 /* Both the Emacs and non-Emacs sections want this. Some
101 configuration files' definitions for the LOAD_AVE_CVT macro (like
102 sparc.h's) use macros like FSCALE, defined here. */
103 # if defined (unix) || defined (__unix)
104 # include <sys/param.h>
107 # include "c-strtod.h"
108 # include "cloexec.h"
109 # include "intprops.h"
112 /* The existing Emacs configuration files define a macro called
113 LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and
114 returns the load average multiplied by 100. What we actually want
115 is a macro called LDAV_CVT, which returns the load average as an
118 For backwards compatibility, we'll define LDAV_CVT in terms of
119 LOAD_AVE_CVT, but future machine config files should just define
120 LDAV_CVT directly. */
122 # if !defined (LDAV_CVT) && defined (LOAD_AVE_CVT)
123 # define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0)
126 # if !defined (BSD) && defined (ultrix)
127 /* Ultrix behaves like BSD on Vaxen. */
132 /* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which
133 conflicts with the definition understood in this file, that this
137 /* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being
138 defined to mean that the nlist method should be used, which is not true. */
142 /* Same issues as for NeXT apply to the HURD-based GNU system. */
146 # endif /* __GNU__ */
148 /* Set values that are different from the defaults, which are
149 set a little farther down with #ifndef. */
152 /* Some shorthands. */
154 # if defined (HPUX) && !defined (hpux)
158 # if defined (__hpux) && !defined (hpux)
162 # if defined (__sun) && !defined (sun)
166 # if defined (hp300) && !defined (hpux)
170 # if defined (ultrix) && defined (mips)
174 # if defined (__SVR4) && !defined (SVR4)
178 # if (defined (sun) && defined (SVR4)) || defined (SOLARIS2)
182 # if defined (__osf__) && (defined (__alpha) || defined (__alpha__))
184 # include <sys/mbuf.h>
185 # include <sys/socket.h>
186 # include <net/route.h>
187 # include <sys/table.h>
190 # if defined (__osf__) && (defined (mips) || defined (__mips__))
192 # include <sys/table.h>
195 /* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
196 default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine
197 that with a couple of other things and we'll have a unique match. */
198 # if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
199 # define tek4300 /* Define by emacs, but not by other users. */
203 /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */
204 # ifndef LOAD_AVE_TYPE
207 # define LOAD_AVE_TYPE long
211 # define LOAD_AVE_TYPE long
215 # define LOAD_AVE_TYPE long
219 # define LOAD_AVE_TYPE long
223 # define LOAD_AVE_TYPE long
227 # define LOAD_AVE_TYPE long
231 # define LOAD_AVE_TYPE long
235 # define LOAD_AVE_TYPE long
239 # define LOAD_AVE_TYPE long
242 # if defined (ardent) && defined (titan)
243 # define LOAD_AVE_TYPE long
247 # define LOAD_AVE_TYPE long
250 # if defined (alliant) && defined (i860) /* Alliant FX/2800 */
251 # define LOAD_AVE_TYPE long
255 # define LOAD_AVE_TYPE long
259 # define LOAD_AVE_TYPE double
261 # define LDAV_CVT(n) (n)
265 # endif /* No LOAD_AVE_TYPE. */
268 /* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1,
269 according to ghazi@noc.rutgers.edu. */
271 # define FSCALE 1024.0
274 # if defined (alliant) && defined (i860) /* Alliant FX/2800 */
275 /* <sys/param.h> defines an incorrect value for FSCALE on an
276 Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */
278 # define FSCALE 100.0
284 /* SunOS and some others define FSCALE in sys/param.h. */
287 # define FSCALE 2048.0
290 # if defined (MIPS) || defined (SVR4) || defined (decstation)
294 # if defined (sgi) || defined (sequent)
295 /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
296 above under #ifdef MIPS. But we want the sgi value. */
298 # define FSCALE 1000.0
301 # if defined (ardent) && defined (titan)
302 # define FSCALE 65536.0
306 # define FSCALE 100.0
310 # define FSCALE 65536.0
313 # endif /* Not FSCALE. */
315 # if !defined (LDAV_CVT) && defined (FSCALE)
316 # define LDAV_CVT(n) (((double) (n)) / FSCALE)
319 # ifndef NLIST_STRUCT
321 # define NLIST_STRUCT
325 # if defined (sgi) || (defined (mips) && !defined (BSD))
326 # define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31))
330 # if !defined (KERNEL_FILE) && defined (sequent)
331 # define KERNEL_FILE "/dynix"
334 # if !defined (KERNEL_FILE) && defined (hpux)
335 # define KERNEL_FILE "/hp-ux"
338 # if !defined (KERNEL_FILE) && (defined (_SEQUENT_) || defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)))
339 # define KERNEL_FILE "/unix"
343 # if !defined (LDAV_SYMBOL) && defined (alliant)
344 # define LDAV_SYMBOL "_Loadavg"
347 # if !defined (LDAV_SYMBOL) && ((defined (hpux) && !defined (hp9000s300)) || defined (_SEQUENT_) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)) || defined (_AIX))
348 # define LDAV_SYMBOL "avenrun"
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>
450 # include "fcntl--.h"
452 /* Avoid static vars inside a function since in HPUX they dump as pure. */
455 static processor_set_t default_set;
456 static bool getloadavg_initialized;
460 static unsigned int cpus = 0;
461 static unsigned int samples;
465 static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
468 # if !defined (HAVE_LIBKSTAT) && defined (LOAD_AVE_TYPE)
469 /* File descriptor open to /dev/kmem or VMS load ave driver. */
471 /* True iff channel is valid. */
472 static bool getloadavg_initialized;
473 /* Offset in kmem to seek to read load average, or 0 means invalid. */
476 # if !defined (VMS) && !defined (sgi) && !defined (__linux__)
477 static struct nlist nl[2];
478 # endif /* Not VMS or sgi */
482 # endif /* SUNOS_5 */
484 # endif /* LOAD_AVE_TYPE && !HAVE_LIBKSTAT */
486 /* Put the 1 minute, 5 minute and 15 minute load averages
487 into the first NELEM elements of LOADAVG.
488 Return the number written (never more than 3, but may be less than NELEM),
489 or -1 if an error occurred. */
492 getloadavg (double loadavg[], int nelem)
494 int elem = 0; /* Return value. */
496 # ifdef NO_GET_LOAD_AVG
498 /* Set errno to zero to indicate that there was no particular error;
499 this function just can't work at all on this system. */
504 # if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT)
505 /* Use libkstat because we don't have to be root. */
514 ksp = kstat_lookup (kc, "unix", 0, "system_misc");
517 if (kstat_read (kc, ksp, 0) == -1)
521 kn = kstat_data_lookup (ksp, "avenrun_1min");
524 /* Return -1 if no load average information is available. */
530 loadavg[elem++] = (double) kn->value.ul / FSCALE;
534 kn = kstat_data_lookup (ksp, "avenrun_5min");
537 loadavg[elem++] = (double) kn->value.ul / FSCALE;
541 kn = kstat_data_lookup (ksp, "avenrun_15min");
543 loadavg[elem++] = (double) kn->value.ul / FSCALE;
549 # endif /* HAVE_LIBKSTAT */
551 # if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
552 /* Use pstat_getdynamic() because we don't have to be root. */
554 # undef LOAD_AVE_TYPE
556 struct pst_dynamic dyn_info;
557 if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0)
560 loadavg[elem++] = dyn_info.psd_avg_1_min;
562 loadavg[elem++] = dyn_info.psd_avg_5_min;
564 loadavg[elem++] = dyn_info.psd_avg_15_min;
566 # endif /* hpux && HAVE_PSTAT_GETDYNAMIC */
568 # if !defined (LDAV_DONE) && (defined (__linux__) || defined (__CYGWIN__))
570 # undef LOAD_AVE_TYPE
572 # ifndef LINUX_LDAV_FILE
573 # define LINUX_LDAV_FILE "/proc/loadavg"
576 char ldavgbuf[3 * (INT_STRLEN_BOUND (int) + sizeof ".00 ")];
577 char const *ptr = ldavgbuf;
580 fd = open (LINUX_LDAV_FILE, O_RDONLY);
583 count = read (fd, ldavgbuf, sizeof ldavgbuf - 1);
587 ldavgbuf[count] = '\0';
589 for (elem = 0; elem < nelem; elem++)
592 double d = c_strtod (ptr, &endptr);
605 # endif /* __linux__ || __CYGWIN__ */
607 # if !defined (LDAV_DONE) && defined (__NetBSD__)
609 # undef LOAD_AVE_TYPE
611 # ifndef NETBSD_LDAV_FILE
612 # define NETBSD_LDAV_FILE "/kern/loadavg"
615 unsigned long int load_ave[3], scale;
619 fp = fopen (NETBSD_LDAV_FILE, "r");
622 count = fscanf (fp, "%lu %lu %lu %lu\n",
623 &load_ave[0], &load_ave[1], &load_ave[2],
629 for (elem = 0; elem < nelem; elem++)
630 loadavg[elem] = (double) load_ave[elem] / (double) scale;
634 # endif /* __NetBSD__ */
636 # if !defined (LDAV_DONE) && defined (NeXT)
638 /* The NeXT code was adapted from iscreen 3.2. */
641 struct processor_set_basic_info info;
642 unsigned int info_count;
644 /* We only know how to get the 1-minute average for this system,
645 so even if the caller asks for more than 1, we only return 1. */
647 if (!getloadavg_initialized)
649 if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
650 getloadavg_initialized = true;
653 if (getloadavg_initialized)
655 info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
656 if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host,
657 (processor_set_info_t) &info, &info_count)
659 getloadavg_initialized = false;
663 loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
667 if (!getloadavg_initialized)
671 # if !defined (LDAV_DONE) && defined (UMAX)
673 /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not
674 have a /dev/kmem. Information about the workings of the running kernel
675 can be gathered with inq_stats system calls.
676 We only know how to get the 1-minute average for this system. */
678 struct proc_summary proc_sum_data;
679 struct stat_descr proc_info;
681 register unsigned int i, j;
685 register unsigned int c, i;
686 struct cpu_config conf;
687 struct stat_descr desc;
690 desc.sd_subsys = SUBSYS_CPU;
691 desc.sd_type = CPUTYPE_CONFIG;
692 desc.sd_addr = (char *) &conf;
693 desc.sd_size = sizeof conf;
695 if (inq_stats (1, &desc))
699 for (i = 0; i < conf.config_maxclass; ++i)
701 struct class_stats stats;
702 bzero ((char *) &stats, sizeof stats);
704 desc.sd_type = CPUTYPE_CLASS;
706 desc.sd_addr = (char *) &stats;
707 desc.sd_size = sizeof stats;
709 if (inq_stats (1, &desc))
712 c += stats.class_numcpus;
715 samples = cpus < 2 ? 3 : (2 * cpus / 3);
718 proc_info.sd_next = 0;
719 proc_info.sd_subsys = SUBSYS_PROC;
720 proc_info.sd_type = PROCTYPE_SUMMARY;
721 proc_info.sd_addr = (char *) &proc_sum_data;
722 proc_info.sd_size = sizeof (struct proc_summary);
723 proc_info.sd_sizeused = 0;
725 if (inq_stats (1, &proc_info) != 0)
728 load = proc_sum_data.ps_nrunnable;
730 for (i = samples - 1; i > 0; --i)
732 load += proc_sum_data.ps_nrun[j];
733 if (j++ == PS_NRUNSIZE)
738 loadavg[elem++] = load / samples / cpus;
741 # if !defined (LDAV_DONE) && defined (DGUX)
743 /* This call can return -1 for an error, but with good args
744 it's not supposed to fail. The first argument is for no
745 apparent reason of type `long int *'. */
746 dg_sys_info ((long int *) &load_info,
747 DG_SYS_INFO_LOAD_INFO_TYPE,
748 DG_SYS_INFO_LOAD_VERSION_0);
751 loadavg[elem++] = load_info.one_minute;
753 loadavg[elem++] = load_info.five_minute;
755 loadavg[elem++] = load_info.fifteen_minute;
758 # if !defined (LDAV_DONE) && defined (apollo)
760 /* Apollo code from lisch@mentorg.com (Ray Lischner).
762 This system call is not documented. The load average is obtained as
763 three long integers, for the load average over the past minute,
764 five minutes, and fifteen minutes. Each value is a scaled integer,
765 with 16 bits of integer part and 16 bits of fraction part.
767 I'm not sure which operating system first supported this system call,
768 but I know that SR10.2 supports it. */
770 extern void proc1_$get_loadav ();
771 unsigned long load_ave[3];
773 proc1_$get_loadav (load_ave);
776 loadavg[elem++] = load_ave[0] / 65536.0;
778 loadavg[elem++] = load_ave[1] / 65536.0;
780 loadavg[elem++] = load_ave[2] / 65536.0;
783 # if !defined (LDAV_DONE) && defined (OSF_MIPS)
786 struct tbl_loadavg load_ave;
787 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
789 = (load_ave.tl_lscale == 0
790 ? load_ave.tl_avenrun.d[0]
791 : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale));
792 # endif /* OSF_MIPS */
794 # if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32))
797 /* A faithful emulation is going to have to be saved for a rainy day. */
798 for ( ; elem < nelem; elem++)
802 # endif /* __MSDOS__ || WINDOWS32 */
804 # if !defined (LDAV_DONE) && defined (OSF_ALPHA)
807 struct tbl_loadavg load_ave;
808 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
809 for (elem = 0; elem < nelem; elem++)
811 = (load_ave.tl_lscale == 0
812 ? load_ave.tl_avenrun.d[elem]
813 : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
814 # endif /* OSF_ALPHA */
816 # if !defined (LDAV_DONE) && defined (VMS)
817 /* VMS specific code -- read from the Load Ave driver. */
819 LOAD_AVE_TYPE load_ave[3];
820 static bool getloadavg_initialized;
829 /* Ensure that there is a channel open to the load ave device. */
830 if (!getloadavg_initialized)
832 /* Attempt to open the channel. */
834 descriptor.dsc$w_length = 18;
835 descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE";
837 $DESCRIPTOR (descriptor, "LAV0:");
839 if (sys$assign (&descriptor, &channel, 0, 0) & 1)
840 getloadavg_initialized = true;
843 /* Read the load average vector. */
844 if (getloadavg_initialized
845 && !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0,
846 load_ave, 12, 0, 0, 0, 0) & 1))
848 sys$dassgn (channel);
849 getloadavg_initialized = false;
852 if (!getloadavg_initialized)
856 # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) && !defined (VMS)
858 /* UNIX-specific code -- read the average from /dev/kmem. */
860 # define LDAV_PRIVILEGED /* This code requires special installation. */
862 LOAD_AVE_TYPE load_ave[3];
864 /* Get the address of LDAV_SYMBOL. */
868 # ifndef NLIST_STRUCT
869 strcpy (nl[0].n_name, LDAV_SYMBOL);
870 strcpy (nl[1].n_name, "");
871 # else /* NLIST_STRUCT */
872 # ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME
873 nl[0].n_un.n_name = LDAV_SYMBOL;
874 nl[1].n_un.n_name = 0;
875 # else /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
876 nl[0].n_name = LDAV_SYMBOL;
878 # endif /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
879 # endif /* NLIST_STRUCT */
883 # if !(defined (_AIX) && !defined (ps2))
884 nlist (KERNEL_FILE, nl)
886 knlist (nl, 1, sizeof (nl[0]))
889 /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
891 # ifdef FIXUP_KERNEL_SYMBOL_ADDR
892 FIXUP_KERNEL_SYMBOL_ADDR (nl);
894 offset = nl[0].n_value;
896 # endif /* !SUNOS_5 */
900 ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
902 offset = (long int) ldav_off & 0x7fffffff;
906 /* Make sure we have /dev/kmem open. */
907 if (!getloadavg_initialized)
910 channel = open ("/dev/kmem", O_RDONLY);
913 /* Set the channel to close on exec, so it does not
914 litter any child's descriptor table. */
915 set_cloexec_flag (channel, true);
916 getloadavg_initialized = true;
919 /* We pass 0 for the kernel, corefile, and swapfile names
920 to use the currently running kernel. */
921 kd = kvm_open (0, 0, 0, O_RDONLY, 0);
924 /* nlist the currently running kernel. */
926 offset = nl[0].n_value;
927 getloadavg_initialized = true;
929 # endif /* SUNOS_5 */
932 /* If we can, get the load average values. */
933 if (offset && getloadavg_initialized)
935 /* Try to read the load. */
937 if (lseek (channel, offset, 0) == -1L
938 || read (channel, (char *) load_ave, sizeof (load_ave))
939 != sizeof (load_ave))
942 getloadavg_initialized = false;
945 if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave))
946 != sizeof (load_ave))
949 getloadavg_initialized = false;
951 # endif /* SUNOS_5 */
954 if (offset == 0 || !getloadavg_initialized)
956 # endif /* LOAD_AVE_TYPE and not VMS */
958 # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */
960 loadavg[elem++] = LDAV_CVT (load_ave[0]);
962 loadavg[elem++] = LDAV_CVT (load_ave[1]);
964 loadavg[elem++] = LDAV_CVT (load_ave[2]);
967 # endif /* !LDAV_DONE && LOAD_AVE_TYPE */
969 # if !defined LDAV_DONE
970 /* Set errno to zero to indicate that there was no particular error;
971 this function just can't work at all on this system. */
978 #endif /* ! HAVE_GETLOADAVG */
982 main (int argc, char **argv)
987 naptime = atoi (argv[1]);
994 errno = 0; /* Don't be misled if it doesn't set errno. */
995 loads = getloadavg (avg, 3);
998 perror ("Error getting load average");
1002 printf ("1-minute: %f ", avg[0]);
1004 printf ("5-minute: %f ", avg[1]);
1006 printf ("15-minute: %f ", avg[2]);
1015 return EXIT_SUCCESS;