#include "config.h"
-#ifdef LOAD_AVE_TYPE
-#ifdef BSD
-/* It appears param.h defines BSD and BSD4_3 in 4.3
- and is not considerate enough to avoid bombing out
- if they are already defined. */
-#undef BSD
-#ifdef BSD4_3
-#undef BSD4_3
-#define XBSD4_3 /* XBSD4_3 says BSD4_3 is supposed to be defined. */
-#endif
-#include <sys/param.h>
-/* Now if BSD or BSD4_3 was defined and is no longer,
- define it again. */
-#ifndef BSD
-#define BSD
-#endif
-#ifdef XBSD4_3
-#ifndef BSD4_3
-#define BSD4_3
-#endif
-#endif /* XBSD4_3 */
-#endif /* BSD */
-#ifndef VMS
-#ifndef NLIST_STRUCT
-#include <a.out.h>
-#else /* NLIST_STRUCT */
-#include <nlist.h>
-#endif /* NLIST_STRUCT */
-#endif /* not VMS */
-#endif /* LOAD_AVE_TYPE */
-
-#ifdef DGUX
-#include <sys/dg_sys_info.h> /* for load average info - DJB */
-#endif
-
/* Note on some machines this defines `vector' as a typedef,
so make sure we don't use that name in this file. */
#undef vector
UNGCPRO;
}
\f
-/* Avoid static vars inside a function since in HPUX they dump as pure. */
-#ifdef DGUX
-static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */
-
-#else /* Not DGUX */
-
-static int ldav_initialized;
-static int ldav_channel;
-#ifdef LOAD_AVE_TYPE
-#ifndef VMS
-static struct nlist ldav_nl[2];
-#endif /* VMS */
-#endif /* LOAD_AVE_TYPE */
-
-#define channel ldav_channel
-#define initialized ldav_initialized
-#define nl ldav_nl
-#endif /* Not DGUX */
-
DEFUN ("load-average", Fload_average, Sload_average, 0, 0, 0,
"Return list of 1 minute, 5 minute and 15 minute load averages.\n\
Each of the three load averages is multiplied by 100,\n\
-then converted to integer.")
+then converted to integer.\n\
+If the 5-minute or 15-minute load averages are not available, return a\n\
+shortened list, containing only those averages which are available.")
()
{
-#ifdef DGUX
- /* perhaps there should be a "sys_load_avg" call in sysdep.c?! - DJB */
- load_info.one_minute = 0.0; /* just in case there is an error */
- load_info.five_minute = 0.0;
- load_info.fifteen_minute = 0.0;
- dg_sys_info (&load_info, DG_SYS_INFO_LOAD_INFO_TYPE,
- DG_SYS_INFO_LOAD_VERSION_0);
-
- return Fcons (make_number ((int)(load_info.one_minute * 100.0)),
- Fcons (make_number ((int)(load_info.five_minute * 100.0)),
- Fcons (make_number ((int)(load_info.fifteen_minute * 100.0)),
- Qnil)));
-#else /* not DGUX */
-#ifndef LOAD_AVE_TYPE
- error ("load-average not implemented for this operating system");
-
-#else /* LOAD_AVE_TYPE defined */
-
- LOAD_AVE_TYPE load_ave[3];
-#ifdef VMS
-#ifndef eunice
-#include <iodef.h>
-#include <descrip.h>
-#else
-#include <vms/iodef.h>
- struct {int dsc$w_length; char *dsc$a_pointer;} descriptor;
-#endif /* eunice */
-#endif /* VMS */
-
- /* If this fails for any reason, we can return (0 0 0) */
- load_ave[0] = 0.0; load_ave[1] = 0.0; load_ave[2] = 0.0;
-
-#ifdef VMS
- /*
- * VMS specific code -- read from the Load Ave driver
- */
-
- /*
- * Ensure that there is a channel open to the load ave device
- */
- if (initialized == 0)
- {
- /* Attempt to open the channel */
-#ifdef eunice
- descriptor.size = 18;
- descriptor.ptr = "$$VMS_LOAD_AVERAGE";
-#else
- $DESCRIPTOR(descriptor, "LAV0:");
-#endif
- if (sys$assign (&descriptor, &channel, 0, 0) & 1)
- initialized = 1;
- }
- /*
- * Read the load average vector
- */
- if (initialized)
- {
- if (!(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0,
- load_ave, 12, 0, 0, 0, 0)
- & 1))
- {
- sys$dassgn (channel);
- initialized = 0;
- }
- }
-#else /* not VMS */
- /*
- * 4.2BSD UNIX-specific code -- read _avenrun from /dev/kmem
- */
-
- /*
- * Make sure we have the address of _avenrun
- */
- if (nl[0].n_value == 0)
- {
- /*
- * Get the address of _avenrun
- */
-#ifndef NLIST_STRUCT
- strcpy (nl[0].n_name, LDAV_SYMBOL);
- nl[1].n_zeroes = 0;
-#else /* NLIST_STRUCT */
-#ifdef convex
- nl[0].n_un.n_name = LDAV_SYMBOL;
- nl[1].n_un.n_name = 0;
-#else /* not convex */
- nl[0].n_name = LDAV_SYMBOL;
- nl[1].n_name = 0;
-#endif /* not convex */
-#endif /* NLIST_STRUCT */
-
- nlist (KERNEL_FILE, nl);
-
-#ifdef FIXUP_KERNEL_SYMBOL_ADDR
- FIXUP_KERNEL_SYMBOL_ADDR (nl);
-#endif /* FIXUP_KERNEL_SYMBOL_ADDR */
- }
- /*
- * Make sure we have /dev/kmem open
- */
- if (initialized == 0)
- {
- /*
- * Open /dev/kmem
- */
- channel = open ("/dev/kmem", 0);
- if (channel >= 0) initialized = 1;
- }
- /*
- * If we can, get the load ave values
- */
- if ((nl[0].n_value != 0) && (initialized != 0))
- {
- /*
- * Seek to the correct address
- */
- lseek (channel, (long) nl[0].n_value, 0);
- if (read (channel, load_ave, sizeof load_ave)
- != sizeof(load_ave))
- {
- close (channel);
- initialized = 0;
- }
- }
-#endif /* not VMS */
-
- /*
- * Return the list of load average values
- */
- return Fcons (make_number (LOAD_AVE_CVT (load_ave[0])),
- Fcons (make_number (LOAD_AVE_CVT (load_ave[1])),
- Fcons (make_number (LOAD_AVE_CVT (load_ave[2])),
- Qnil)));
-#endif /* LOAD_AVE_TYPE */
-#endif /* not DGUX */
-}
+ double load_ave[3];
+ int loads = getloadavg (load_ave, 3);
+ Lisp_Object ret;
-#undef channel
-#undef initialized
-#undef nl
+ if (loads < 0)
+ error ("load-average not implemented for this operating system");
+
+ ret = Qnil;
+ while (loads > 0)
+ ret = Fcons (make_number ((int) (load_ave[--loads] * 100.0)), ret);
+
+ return ret;
+}
\f
Lisp_Object Vfeatures;
HCoop / bpt / emacs.git / blobdiff