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>
450 # if defined (HAVE_FCNTL_H) || defined (_POSIX_VERSION)
453 # include <sys/file.h>
456 # include "unistd-safer.h"
458 /* Avoid static vars inside a function since in HPUX they dump as pure. */
461 static processor_set_t default_set;
462 static bool getloadavg_initialized;
466 static unsigned int cpus = 0;
467 static unsigned int samples;
471 static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
474 # if !defined (HAVE_LIBKSTAT) && defined (LOAD_AVE_TYPE)
475 /* File descriptor open to /dev/kmem or VMS load ave driver. */
477 /* True iff channel is valid. */
478 static bool getloadavg_initialized;
479 /* Offset in kmem to seek to read load average, or 0 means invalid. */
482 # if !defined (VMS) && !defined (sgi) && !defined (__linux__)
483 static struct nlist nl[2];
484 # endif /* Not VMS or sgi */
488 # endif /* SUNOS_5 */
490 # endif /* LOAD_AVE_TYPE && !HAVE_LIBKSTAT */
492 /* Put the 1 minute, 5 minute and 15 minute load averages
493 into the first NELEM elements of LOADAVG.
494 Return the number written (never more than 3, but may be less than NELEM),
495 or -1 if an error occurred. */
498 getloadavg (double loadavg[], int nelem)
500 int elem = 0; /* Return value. */
502 # ifdef NO_GET_LOAD_AVG
504 /* Set errno to zero to indicate that there was no particular error;
505 this function just can't work at all on this system. */
510 # if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT)
511 /* Use libkstat because we don't have to be root. */
520 ksp = kstat_lookup (kc, "unix", 0, "system_misc");
523 if (kstat_read (kc, ksp, 0) == -1)
527 kn = kstat_data_lookup (ksp, "avenrun_1min");
530 /* Return -1 if no load average information is available. */
536 loadavg[elem++] = (double) kn->value.ul / FSCALE;
540 kn = kstat_data_lookup (ksp, "avenrun_5min");
543 loadavg[elem++] = (double) kn->value.ul / FSCALE;
547 kn = kstat_data_lookup (ksp, "avenrun_15min");
549 loadavg[elem++] = (double) kn->value.ul / FSCALE;
555 # endif /* HAVE_LIBKSTAT */
557 # if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC)
558 /* Use pstat_getdynamic() because we don't have to be root. */
560 # undef LOAD_AVE_TYPE
562 struct pst_dynamic dyn_info;
563 if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0)
566 loadavg[elem++] = dyn_info.psd_avg_1_min;
568 loadavg[elem++] = dyn_info.psd_avg_5_min;
570 loadavg[elem++] = dyn_info.psd_avg_15_min;
572 # endif /* hpux && HAVE_PSTAT_GETDYNAMIC */
574 # if !defined (LDAV_DONE) && defined (__linux__)
576 # undef LOAD_AVE_TYPE
578 # ifndef LINUX_LDAV_FILE
579 # define LINUX_LDAV_FILE "/proc/loadavg"
582 char ldavgbuf[3 * (INT_STRLEN_BOUND (long int) + sizeof ".00")];
583 char const *ptr = ldavgbuf;
586 fd = open (LINUX_LDAV_FILE, O_RDONLY);
589 count = read (fd, ldavgbuf, sizeof ldavgbuf - 1);
593 ldavgbuf[count] = '\0';
595 for (elem = 0; elem < nelem; elem++)
598 double d = c_strtod (ptr, &endptr);
611 # endif /* __linux__ */
613 # if !defined (LDAV_DONE) && defined (__NetBSD__)
615 # undef LOAD_AVE_TYPE
617 # ifndef NETBSD_LDAV_FILE
618 # define NETBSD_LDAV_FILE "/kern/loadavg"
621 unsigned long int load_ave[3], scale;
625 fp = fopen (NETBSD_LDAV_FILE, "r");
628 count = fscanf (fp, "%lu %lu %lu %lu\n",
629 &load_ave[0], &load_ave[1], &load_ave[2],
635 for (elem = 0; elem < nelem; elem++)
636 loadavg[elem] = (double) load_ave[elem] / (double) scale;
640 # endif /* __NetBSD__ */
642 # if !defined (LDAV_DONE) && defined (NeXT)
644 /* The NeXT code was adapted from iscreen 3.2. */
647 struct processor_set_basic_info info;
648 unsigned int info_count;
650 /* We only know how to get the 1-minute average for this system,
651 so even if the caller asks for more than 1, we only return 1. */
653 if (!getloadavg_initialized)
655 if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS)
656 getloadavg_initialized = true;
659 if (getloadavg_initialized)
661 info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
662 if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host,
663 (processor_set_info_t) &info, &info_count)
665 getloadavg_initialized = false;
669 loadavg[elem++] = (double) info.load_average / LOAD_SCALE;
673 if (!getloadavg_initialized)
677 # if !defined (LDAV_DONE) && defined (UMAX)
679 /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not
680 have a /dev/kmem. Information about the workings of the running kernel
681 can be gathered with inq_stats system calls.
682 We only know how to get the 1-minute average for this system. */
684 struct proc_summary proc_sum_data;
685 struct stat_descr proc_info;
687 register unsigned int i, j;
691 register unsigned int c, i;
692 struct cpu_config conf;
693 struct stat_descr desc;
696 desc.sd_subsys = SUBSYS_CPU;
697 desc.sd_type = CPUTYPE_CONFIG;
698 desc.sd_addr = (char *) &conf;
699 desc.sd_size = sizeof conf;
701 if (inq_stats (1, &desc))
705 for (i = 0; i < conf.config_maxclass; ++i)
707 struct class_stats stats;
708 bzero ((char *) &stats, sizeof stats);
710 desc.sd_type = CPUTYPE_CLASS;
712 desc.sd_addr = (char *) &stats;
713 desc.sd_size = sizeof stats;
715 if (inq_stats (1, &desc))
718 c += stats.class_numcpus;
721 samples = cpus < 2 ? 3 : (2 * cpus / 3);
724 proc_info.sd_next = 0;
725 proc_info.sd_subsys = SUBSYS_PROC;
726 proc_info.sd_type = PROCTYPE_SUMMARY;
727 proc_info.sd_addr = (char *) &proc_sum_data;
728 proc_info.sd_size = sizeof (struct proc_summary);
729 proc_info.sd_sizeused = 0;
731 if (inq_stats (1, &proc_info) != 0)
734 load = proc_sum_data.ps_nrunnable;
736 for (i = samples - 1; i > 0; --i)
738 load += proc_sum_data.ps_nrun[j];
739 if (j++ == PS_NRUNSIZE)
744 loadavg[elem++] = load / samples / cpus;
747 # if !defined (LDAV_DONE) && defined (DGUX)
749 /* This call can return -1 for an error, but with good args
750 it's not supposed to fail. The first argument is for no
751 apparent reason of type `long int *'. */
752 dg_sys_info ((long int *) &load_info,
753 DG_SYS_INFO_LOAD_INFO_TYPE,
754 DG_SYS_INFO_LOAD_VERSION_0);
757 loadavg[elem++] = load_info.one_minute;
759 loadavg[elem++] = load_info.five_minute;
761 loadavg[elem++] = load_info.fifteen_minute;
764 # if !defined (LDAV_DONE) && defined (apollo)
766 /* Apollo code from lisch@mentorg.com (Ray Lischner).
768 This system call is not documented. The load average is obtained as
769 three long integers, for the load average over the past minute,
770 five minutes, and fifteen minutes. Each value is a scaled integer,
771 with 16 bits of integer part and 16 bits of fraction part.
773 I'm not sure which operating system first supported this system call,
774 but I know that SR10.2 supports it. */
776 extern void proc1_$get_loadav ();
777 unsigned long load_ave[3];
779 proc1_$get_loadav (load_ave);
782 loadavg[elem++] = load_ave[0] / 65536.0;
784 loadavg[elem++] = load_ave[1] / 65536.0;
786 loadavg[elem++] = load_ave[2] / 65536.0;
789 # if !defined (LDAV_DONE) && defined (OSF_MIPS)
792 struct tbl_loadavg load_ave;
793 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
795 = (load_ave.tl_lscale == 0
796 ? load_ave.tl_avenrun.d[0]
797 : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale));
798 # endif /* OSF_MIPS */
800 # if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32))
803 /* A faithful emulation is going to have to be saved for a rainy day. */
804 for ( ; elem < nelem; elem++)
808 # endif /* __MSDOS__ || WINDOWS32 */
810 # if !defined (LDAV_DONE) && defined (OSF_ALPHA)
813 struct tbl_loadavg load_ave;
814 table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave));
815 for (elem = 0; elem < nelem; elem++)
817 = (load_ave.tl_lscale == 0
818 ? load_ave.tl_avenrun.d[elem]
819 : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale));
820 # endif /* OSF_ALPHA */
822 # if !defined (LDAV_DONE) && defined (VMS)
823 /* VMS specific code -- read from the Load Ave driver. */
825 LOAD_AVE_TYPE load_ave[3];
826 static bool getloadavg_initialized;
835 /* Ensure that there is a channel open to the load ave device. */
836 if (!getloadavg_initialized)
838 /* Attempt to open the channel. */
840 descriptor.dsc$w_length = 18;
841 descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE";
843 $DESCRIPTOR (descriptor, "LAV0:");
845 if (sys$assign (&descriptor, &channel, 0, 0) & 1)
846 getloadavg_initialized = true;
849 /* Read the load average vector. */
850 if (getloadavg_initialized
851 && !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0,
852 load_ave, 12, 0, 0, 0, 0) & 1))
854 sys$dassgn (channel);
855 getloadavg_initialized = false;
858 if (!getloadavg_initialized)
862 # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) && !defined (VMS)
864 /* UNIX-specific code -- read the average from /dev/kmem. */
866 # define LDAV_PRIVILEGED /* This code requires special installation. */
868 LOAD_AVE_TYPE load_ave[3];
870 /* Get the address of LDAV_SYMBOL. */
874 # ifndef NLIST_STRUCT
875 strcpy (nl[0].n_name, LDAV_SYMBOL);
876 strcpy (nl[1].n_name, "");
877 # else /* NLIST_STRUCT */
878 # ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME
879 nl[0].n_un.n_name = LDAV_SYMBOL;
880 nl[1].n_un.n_name = 0;
881 # else /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
882 nl[0].n_name = LDAV_SYMBOL;
884 # endif /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */
885 # endif /* NLIST_STRUCT */
889 # if !(defined (_AIX) && !defined (ps2))
890 nlist (KERNEL_FILE, nl)
892 knlist (nl, 1, sizeof (nl[0]))
895 /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */
897 # ifdef FIXUP_KERNEL_SYMBOL_ADDR
898 FIXUP_KERNEL_SYMBOL_ADDR (nl);
900 offset = nl[0].n_value;
902 # endif /* !SUNOS_5 */
906 ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN);
908 offset = (long int) ldav_off & 0x7fffffff;
912 /* Make sure we have /dev/kmem open. */
913 if (!getloadavg_initialized)
916 channel = fd_safer (open ("/dev/kmem", O_RDONLY));
919 /* Set the channel to close on exec, so it does not
920 litter any child's descriptor table. */
921 set_cloexec_flag (channel, true);
922 getloadavg_initialized = true;
925 /* We pass 0 for the kernel, corefile, and swapfile names
926 to use the currently running kernel. */
927 kd = kvm_open (0, 0, 0, O_RDONLY, 0);
930 /* nlist the currently running kernel. */
932 offset = nl[0].n_value;
933 getloadavg_initialized = true;
935 # endif /* SUNOS_5 */
938 /* If we can, get the load average values. */
939 if (offset && getloadavg_initialized)
941 /* Try to read the load. */
943 if (lseek (channel, offset, 0) == -1L
944 || read (channel, (char *) load_ave, sizeof (load_ave))
945 != sizeof (load_ave))
948 getloadavg_initialized = false;
951 if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave))
952 != sizeof (load_ave))
955 getloadavg_initialized = false;
957 # endif /* SUNOS_5 */
960 if (offset == 0 || !getloadavg_initialized)
962 # endif /* LOAD_AVE_TYPE and not VMS */
964 # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */
966 loadavg[elem++] = LDAV_CVT (load_ave[0]);
968 loadavg[elem++] = LDAV_CVT (load_ave[1]);
970 loadavg[elem++] = LDAV_CVT (load_ave[2]);
973 # endif /* !LDAV_DONE && LOAD_AVE_TYPE */
978 /* Set errno to zero to indicate that there was no particular error;
979 this function just can't work at all on this system. */
985 #endif /* ! HAVE_GETLOADAVG */
989 main (int argc, char **argv)
994 naptime = atoi (argv[1]);
1001 errno = 0; /* Don't be misled if it doesn't set errno. */
1002 loads = getloadavg (avg, 3);
1005 perror ("Error getting load average");
1006 return EXIT_FAILURE;
1009 printf ("1-minute: %f ", avg[0]);
1011 printf ("5-minute: %f ", avg[1]);
1013 printf ("15-minute: %f ", avg[2]);
1022 return EXIT_SUCCESS;