diff options
Diffstat (limited to 'src/getloadavg.c')
| -rw-r--r-- | src/getloadavg.c | 895 |
1 files changed, 0 insertions, 895 deletions
diff --git a/src/getloadavg.c b/src/getloadavg.c deleted file mode 100644 index 03b4de0239e..00000000000 --- a/src/getloadavg.c +++ /dev/null @@ -1,895 +0,0 @@ -/* Get the system load averages. - Copyright (C) 1985, 86, 87, 88, 89, 91, 92, 93 - Free Software Foundation, Inc. - - 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. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* 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. - - Specific system predefines this file uses, aside from setting - default values if not emacs: - - apollo - BSD Real BSD, not just BSD-like. - DGUX - eunice UNIX emulator under VMS. - hpux - NeXT - sgi - 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. - - 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. */ - -#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 - - -#ifdef HAVE_CONFIG_H -#if defined (emacs) || defined (CONFIG_BROKETS) -/* We use <config.h> instead of "config.h" so that a compilation - using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h - (which it would do because it found this file in $srcdir). */ -#include <config.h> -#else -#include "config.h" -#endif -#endif - - -/* Exclude all the code except the test program at the end - if the system has its own `getloadavg' function. */ - -#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. - - 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 !defined(LDAV_CVT) && defined(LOAD_AVE_CVT) -#define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0) -#endif - -#if !defined (BSD) && defined (ultrix) -/* Ultrix behaves like BSD on Vaxen. */ -#define BSD -#endif - -#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 - -/* 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 - -/* 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(SVR4) -#define SUNOS_5 -#endif - -#if defined (__osf__) && (defined (__alpha) || defined (__alpha__)) -#define OSF_ALPHA -#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 - - -/* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */ -#ifndef LOAD_AVE_TYPE - -#ifdef MORE_BSD -#define LOAD_AVE_TYPE long -#endif - -#ifdef sun -#define LOAD_AVE_TYPE long -#endif - -#ifdef decstation -#define LOAD_AVE_TYPE long -#endif - -#ifdef _SEQUENT_ -#define LOAD_AVE_TYPE long -#endif - -#ifdef sgi -#define LOAD_AVE_TYPE long -#endif - -#ifdef SVR4 -#define LOAD_AVE_TYPE long -#endif - -#ifdef sony_news -#define LOAD_AVE_TYPE long -#endif - -#ifdef sequent -#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 - -#ifdef tek4300 -#define LOAD_AVE_TYPE long -#endif - -#endif /* No LOAD_AVE_TYPE. */ - -#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 - - -#ifndef FSCALE - -/* SunOS and some others define FSCALE in sys/param.h. */ - -#ifdef MORE_BSD -#define FSCALE 2048.0 -#endif - -#if defined(MIPS) || defined(SVR4) || defined(decstation) -#define FSCALE 256 -#endif - -#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 - -#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 - -#ifdef MORE_BSD -#define NLIST_STRUCT -#endif - -#ifdef sun -#define NLIST_STRUCT -#endif - -#ifdef decstation -#define NLIST_STRUCT -#endif - -#ifdef hpux -#define NLIST_STRUCT -#endif - -#if defined (_SEQUENT_) || defined (sequent) -#define NLIST_STRUCT -#endif - -#ifdef sgi -#define NLIST_STRUCT -#endif - -#ifdef SVR4 -#define NLIST_STRUCT -#endif - -#ifdef sony_news -#define NLIST_STRUCT -#endif - -#ifdef OSF_ALPHA -#define NLIST_STRUCT -#endif - -#if defined (ardent) && defined (titan) -#define NLIST_STRUCT -#endif - -#ifdef tex4300 -#define NLIST_STRUCT -#endif - -#ifdef butterfly -#define NLIST_STRUCT -#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))) -#define LDAV_SYMBOL "avenrun" -#endif - -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif - -#include <stdio.h> -#include <errno.h> - -#ifndef errno -extern int errno; -#endif - -/* 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 - -/* Avoid static vars inside a function since in HPUX they dump as pure. */ - -#ifdef NeXT -static processor_set_t default_set; -static int getloadavg_initialized; -#endif /* NeXT */ - -#ifdef UMAX -static unsigned int cpus = 0; -static unsigned int samples; -#endif /* UMAX */ - -#ifdef DGUX -static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */ -#endif /* DGUX */ - -#ifdef 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; -/* 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 */ - -#ifdef SUNOS_5 -static kvm_t *kd; -#endif /* SUNOS_5 */ - -#endif /* LOAD_AVE_TYPE */ - -/* 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. */ - -int -getloadavg (loadavg, nelem) - double loadavg[]; - int nelem; -{ - 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; - elem = -1; -#endif - -#if !defined (LDAV_DONE) && defined (__linux__) -#define LDAV_DONE -#undef LOAD_AVE_TYPE - -#ifndef LINUX_LDAV_FILE -#define LINUX_LDAV_FILE "/proc/loadavg" -#endif - - char ldavgbuf[40]; - double load_ave[3]; - int fd, count; - - fd = open (LINUX_LDAV_FILE, O_RDONLY); - if (fd == -1) - return -1; - count = read (fd, ldavgbuf, 40); - (void) close (fd); - if (count <= 0) - return -1; - - 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 < count; elem++) - loadavg[elem] = load_ave[elem]; - - return elem; - -#endif /* __linux__ */ - -#if !defined (LDAV_DONE) && defined (__NetBSD__) -#define LDAV_DONE -#undef LOAD_AVE_TYPE - -#ifndef NETBSD_LDAV_FILE -#define NETBSD_LDAV_FILE "/kern/loadavg" -#endif - - unsigned long int load_ave[3], scale; - int count; - FILE *fp; - - fp = fopen (NETBSD_LDAV_FILE, "r"); - if (fp == NULL) - return -1; - count = fscanf (fp, "%lu %lu %lu %lu\n", - &load_ave[0], &load_ave[1], &load_ave[2], - &scale); - (void) fclose (fp); - if (count != 4) - return -1; - - for (elem = 0; elem < nelem; elem++) - loadavg[elem] = (double) load_ave[elem] / (double) scale; - - return elem; - -#endif /* __NetBSD__ */ - -#if !defined (LDAV_DONE) && defined (NeXT) -#define LDAV_DONE - /* The NeXT code was adapted from iscreen 3.2. */ - - host_t host; - struct processor_set_basic_info info; - unsigned 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; - } - - 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; - else - { - if (nelem > 0) - loadavg[elem++] = (double) info.load_average / LOAD_SCALE; - } - } - - if (!getloadavg_initialized) - return -1; -#endif /* NeXT */ - -#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. - We only know how to get the 1-minute average for this system. */ - - struct proc_summary proc_sum_data; - struct stat_descr proc_info; - double load; - register unsigned int i, j; - - if (cpus == 0) - { - register unsigned int c, i; - struct cpu_config conf; - struct stat_descr desc; - - desc.sd_next = 0; - desc.sd_subsys = SUBSYS_CPU; - desc.sd_type = CPUTYPE_CONFIG; - desc.sd_addr = (char *) &conf; - desc.sd_size = sizeof conf; - - if (inq_stats (1, &desc)) - return -1; - - c = 0; - for (i = 0; i < conf.config_maxclass; ++i) - { - 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; - - if (inq_stats (1, &desc)) - return -1; - - c += stats.class_numcpus; - } - cpus = c; - samples = cpus < 2 ? 3 : (2 * cpus / 3); - } - - proc_info.sd_next = 0; - proc_info.sd_subsys = SUBSYS_PROC; - proc_info.sd_type = PROCTYPE_SUMMARY; - proc_info.sd_addr = (char *) &proc_sum_data; - proc_info.sd_size = sizeof (struct proc_summary); - proc_info.sd_sizeused = 0; - - if (inq_stats (1, &proc_info) != 0) - return -1; - - load = proc_sum_data.ps_nrunnable; - j = 0; - for (i = samples - 1; i > 0; --i) - { - load += proc_sum_data.ps_nrun[j]; - if (j++ == PS_NRUNSIZE) - j = 0; - } - - if (nelem > 0) - loadavg[elem++] = load / samples / cpus; -#endif /* UMAX */ - -#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 *'. */ - dg_sys_info ((long int *) &load_info, - DG_SYS_INFO_LOAD_INFO_TYPE, - DG_SYS_INFO_LOAD_VERSION_0); - - if (nelem > 0) - loadavg[elem++] = load_info.one_minute; - if (nelem > 1) - loadavg[elem++] = load_info.five_minute; - if (nelem > 2) - loadavg[elem++] = load_info.fifteen_minute; -#endif /* DGUX */ - -#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 - three long integers, for the load average over the past minute, - five minutes, and fifteen minutes. Each value is a scaled integer, - with 16 bits of integer part and 16 bits of fraction part. - - I'm not sure which operating system first supported this system call, - but I know that SR10.2 supports it. */ - - extern void proc1_$get_loadav (); - unsigned long load_ave[3]; - - proc1_$get_loadav (load_ave); - - if (nelem > 0) - loadavg[elem++] = load_ave[0] / 65536.0; - if (nelem > 1) - loadavg[elem++] = load_ave[1] / 65536.0; - if (nelem > 2) - loadavg[elem++] = load_ave[2] / 65536.0; -#endif /* apollo */ - -#if !defined (LDAV_DONE) && defined (OSF_MIPS) -#define LDAV_DONE - - struct tbl_loadavg load_ave; - table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave)); - loadavg[elem++] - = (load_ave.tl_lscale == 0 - ? load_ave.tl_avenrun.d[0] - : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale)); -#endif /* OSF_MIPS */ - -#if !defined (LDAV_DONE) && defined (VMS) - /* VMS specific code -- read from the Load Ave driver. */ - - LOAD_AVE_TYPE load_ave[3]; - static int getloadavg_initialized = 0; -#ifdef eunice - struct - { - int dsc$w_length; - char *dsc$a_pointer; - } descriptor; -#endif - - /* Ensure that there is a channel open to the load ave device. */ - if (!getloadavg_initialized) - { - /* Attempt to open the channel. */ -#ifdef eunice - descriptor.dsc$w_length = 18; - descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE"; -#else - $DESCRIPTOR (descriptor, "LAV0:"); -#endif - if (sys$assign (&descriptor, &channel, 0, 0) & 1) - getloadavg_initialized = 1; - } - - /* 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)) - { - sys$dassgn (channel); - getloadavg_initialized = 0; - } - - if (!getloadavg_initialized) - return -1; -#endif /* VMS */ - -#if !defined (LDAV_DONE) && defined(LOAD_AVE_TYPE) && !defined(VMS) - - /* UNIX-specific code -- read the average from /dev/kmem. */ - -#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 - if (nlist (KERNEL_FILE, nl) >= 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 */ - } - - /* Make sure we have /dev/kmem open. */ - if (!getloadavg_initialized) - { -#ifndef SUNOS_5 - channel = open ("/dev/kmem", 0); - if (channel >= 0) - getloadavg_initialized = 1; -#else /* SUNOS_5 */ - /* We pass 0 for the kernel, corefile, and swapfile names - 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 we can, get the load average values. */ - if (offset && getloadavg_initialized) - { - /* 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 = 0; - } -#else /* SUNOS_5 */ - if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave)) - != sizeof (load_ave)) - { - kvm_close (kd); - getloadavg_initialized = 0; - } -#endif /* SUNOS_5 */ - } - - if (offset == 0 || !getloadavg_initialized) - return -1; -#endif /* LOAD_AVE_TYPE and not VMS */ - -#if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */ - if (nelem > 0) - loadavg[elem++] = LDAV_CVT (load_ave[0]); - if (nelem > 1) - loadavg[elem++] = LDAV_CVT (load_ave[1]); - if (nelem > 2) - loadavg[elem++] = LDAV_CVT (load_ave[2]); - -#define LDAV_DONE -#endif /* !LDAV_DONE && LOAD_AVE_TYPE */ - -#ifdef LDAV_DONE - 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 */ - -#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 */ |