Commit | Line | Data |
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1e5ba5b5 | 1 | /* Get the system load averages. |
2c30b2fc | 2 | Copyright (C) 1985, 86, 87, 88, 89, 91, 92, 93, 1994, 1995, 1997 |
1e5ba5b5 RM |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2, or (at your option) | |
8 | any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
0468655b KH |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
18 | USA. */ | |
1e5ba5b5 RM |
19 | |
20 | /* Compile-time symbols that this file uses: | |
21 | ||
579c8381 JM |
22 | HAVE_PSTAT_GETDYNAMIC Define this if your system has the |
23 | pstat_getdynamic function. I think it | |
24 | is unique to HPUX9. The best way to get the | |
25 | definition is through the AC_FUNC_GETLOADAVG | |
26 | macro that comes with autoconf 2.13 or newer. | |
27 | If that isn't an option, then just put | |
28 | AC_CHECK_FUNCS(pstat_getdynamic) in your | |
29 | configure.in file. | |
1e5ba5b5 RM |
30 | FIXUP_KERNEL_SYMBOL_ADDR() Adjust address in returned struct nlist. |
31 | KERNEL_FILE Pathname of the kernel to nlist. | |
32 | LDAV_CVT() Scale the load average from the kernel. | |
33 | Returns a double. | |
34 | LDAV_SYMBOL Name of kernel symbol giving load average. | |
35 | LOAD_AVE_TYPE Type of the load average array in the kernel. | |
36 | Must be defined unless one of | |
37 | apollo, DGUX, NeXT, or UMAX is defined; | |
38 | otherwise, no load average is available. | |
39 | NLIST_STRUCT Include nlist.h, not a.out.h, and | |
40 | the nlist n_name element is a pointer, | |
41 | not an array. | |
42 | NLIST_NAME_UNION struct nlist has an n_un member, not n_name. | |
22ddf250 | 43 | LINUX_LDAV_FILE [__linux__]: File containing load averages. |
1e5ba5b5 RM |
44 | |
45 | Specific system predefines this file uses, aside from setting | |
46 | default values if not emacs: | |
47 | ||
48 | apollo | |
49 | BSD Real BSD, not just BSD-like. | |
91bf5fad | 50 | convex |
1e5ba5b5 RM |
51 | DGUX |
52 | eunice UNIX emulator under VMS. | |
53 | hpux | |
383ebe49 | 54 | __MSDOS__ No-op for MSDOS. |
1e5ba5b5 RM |
55 | NeXT |
56 | sgi | |
57 | sequent Sequent Dynix 3.x.x (BSD) | |
58 | _SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV) | |
59 | sony_news NEWS-OS (works at least for 4.1C) | |
60 | UMAX | |
61 | UMAX4_3 | |
62 | VMS | |
383ebe49 | 63 | WINDOWS32 No-op for Windows95/NT. |
22ddf250 | 64 | __linux__ Linux: assumes /proc filesystem mounted. |
1e5ba5b5 | 65 | Support from Michael K. Johnson. |
9eb8034b | 66 | __NetBSD__ NetBSD: assumes /kern filesystem mounted. |
1e5ba5b5 RM |
67 | |
68 | In addition, to avoid nesting many #ifdefs, we internally set | |
69 | LDAV_DONE to indicate that the load average has been computed. | |
70 | ||
71 | We also #define LDAV_PRIVILEGED if a program will require | |
72 | special installation to be able to call getloadavg. */ | |
73 | ||
df3dd7d6 RM |
74 | /* This should always be first. */ |
75 | #ifdef HAVE_CONFIG_H | |
3da4f367 | 76 | # include <config.h> |
df3dd7d6 RM |
77 | #endif |
78 | ||
1e5ba5b5 RM |
79 | #include <sys/types.h> |
80 | ||
81 | /* Both the Emacs and non-Emacs sections want this. Some | |
82 | configuration files' definitions for the LOAD_AVE_CVT macro (like | |
83 | sparc.h's) use macros like FSCALE, defined here. */ | |
2b86fcb1 | 84 | #if defined (unix) || defined (__unix) |
3da4f367 | 85 | # include <sys/param.h> |
1e5ba5b5 RM |
86 | #endif |
87 | ||
88 | ||
04402ae3 | 89 | /* Exclude all the code except the test program at the end |
39c5a83f RM |
90 | if the system has its own `getloadavg' function. |
91 | ||
92 | The declaration of `errno' is needed by the test program | |
93 | as well as the function itself, so it comes first. */ | |
94 | ||
95 | #include <errno.h> | |
96 | ||
97 | #ifndef errno | |
98 | extern int errno; | |
99 | #endif | |
04402ae3 RM |
100 | |
101 | #ifndef HAVE_GETLOADAVG | |
102 | ||
103 | ||
1e5ba5b5 RM |
104 | /* The existing Emacs configuration files define a macro called |
105 | LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and | |
106 | returns the load average multiplied by 100. What we actually want | |
107 | is a macro called LDAV_CVT, which returns the load average as an | |
108 | unmultiplied double. | |
109 | ||
110 | For backwards compatibility, we'll define LDAV_CVT in terms of | |
111 | LOAD_AVE_CVT, but future machine config files should just define | |
112 | LDAV_CVT directly. */ | |
113 | ||
3da4f367 JM |
114 | # if !defined(LDAV_CVT) && defined(LOAD_AVE_CVT) |
115 | # define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0) | |
116 | # endif | |
1e5ba5b5 | 117 | |
3da4f367 | 118 | # if !defined (BSD) && defined (ultrix) |
1e5ba5b5 | 119 | /* Ultrix behaves like BSD on Vaxen. */ |
3da4f367 JM |
120 | # define BSD |
121 | # endif | |
1e5ba5b5 | 122 | |
3da4f367 | 123 | # ifdef NeXT |
1e5ba5b5 RM |
124 | /* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which |
125 | conflicts with the definition understood in this file, that this | |
126 | really is BSD. */ | |
3da4f367 | 127 | # undef BSD |
1e5ba5b5 RM |
128 | |
129 | /* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being | |
130 | defined to mean that the nlist method should be used, which is not true. */ | |
3da4f367 JM |
131 | # undef FSCALE |
132 | # endif | |
1e5ba5b5 RM |
133 | |
134 | /* Set values that are different from the defaults, which are | |
135 | set a little farther down with #ifndef. */ | |
136 | ||
137 | ||
138 | /* Some shorthands. */ | |
139 | ||
3da4f367 JM |
140 | # if defined (HPUX) && !defined (hpux) |
141 | # define hpux | |
142 | # endif | |
1e5ba5b5 | 143 | |
3da4f367 JM |
144 | # if defined (__hpux) && !defined (hpux) |
145 | # define hpux | |
146 | # endif | |
73a46a9c | 147 | |
3da4f367 JM |
148 | # if defined (__sun) && !defined (sun) |
149 | # define sun | |
150 | # endif | |
73a46a9c | 151 | |
3da4f367 JM |
152 | # if defined(hp300) && !defined(hpux) |
153 | # define MORE_BSD | |
154 | # endif | |
1e5ba5b5 | 155 | |
3da4f367 JM |
156 | # if defined(ultrix) && defined(mips) |
157 | # define decstation | |
158 | # endif | |
1e5ba5b5 | 159 | |
3da4f367 JM |
160 | # if defined (__SVR4) && !defined (SVR4) |
161 | # define SVR4 | |
162 | # endif | |
1e5ba5b5 | 163 | |
3da4f367 JM |
164 | # if (defined(sun) && defined(SVR4)) || defined (SOLARIS2) |
165 | # define SUNOS_5 | |
166 | # endif | |
1e5ba5b5 | 167 | |
3da4f367 JM |
168 | # if defined (__osf__) && (defined (__alpha) || defined (__alpha__)) |
169 | # define OSF_ALPHA | |
e3cbb35e RS |
170 | # include <sys/mbuf.h> |
171 | # include <sys/socket.h> | |
172 | # include <net/route.h> | |
3da4f367 JM |
173 | # include <sys/table.h> |
174 | # endif | |
175 | ||
176 | # if defined (__osf__) && (defined (mips) || defined (__mips__)) | |
177 | # define OSF_MIPS | |
178 | # include <sys/table.h> | |
179 | # endif | |
1e5ba5b5 RM |
180 | |
181 | /* UTek's /bin/cc on the 4300 has no architecture specific cpp define by | |
182 | default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine | |
183 | that with a couple of other things and we'll have a unique match. */ | |
3da4f367 JM |
184 | # if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES) |
185 | # define tek4300 /* Define by emacs, but not by other users. */ | |
186 | # endif | |
1e5ba5b5 RM |
187 | |
188 | ||
8eda6c51 | 189 | /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */ |
3da4f367 | 190 | # ifndef LOAD_AVE_TYPE |
5ac622b2 | 191 | |
3da4f367 JM |
192 | # ifdef MORE_BSD |
193 | # define LOAD_AVE_TYPE long | |
194 | # endif | |
8eda6c51 | 195 | |
3da4f367 JM |
196 | # ifdef sun |
197 | # define LOAD_AVE_TYPE long | |
198 | # endif | |
8eda6c51 | 199 | |
3da4f367 JM |
200 | # ifdef decstation |
201 | # define LOAD_AVE_TYPE long | |
202 | # endif | |
8eda6c51 | 203 | |
3da4f367 JM |
204 | # ifdef _SEQUENT_ |
205 | # define LOAD_AVE_TYPE long | |
206 | # endif | |
8eda6c51 | 207 | |
3da4f367 JM |
208 | # ifdef sgi |
209 | # define LOAD_AVE_TYPE long | |
210 | # endif | |
8eda6c51 | 211 | |
3da4f367 JM |
212 | # ifdef SVR4 |
213 | # define LOAD_AVE_TYPE long | |
214 | # endif | |
8eda6c51 | 215 | |
3da4f367 JM |
216 | # ifdef sony_news |
217 | # define LOAD_AVE_TYPE long | |
218 | # endif | |
8eda6c51 | 219 | |
3da4f367 JM |
220 | # ifdef sequent |
221 | # define LOAD_AVE_TYPE long | |
222 | # endif | |
8eda6c51 | 223 | |
3da4f367 JM |
224 | # ifdef OSF_ALPHA |
225 | # define LOAD_AVE_TYPE long | |
226 | # endif | |
8eda6c51 | 227 | |
3da4f367 JM |
228 | # if defined (ardent) && defined (titan) |
229 | # define LOAD_AVE_TYPE long | |
230 | # endif | |
8eda6c51 | 231 | |
3da4f367 JM |
232 | # ifdef tek4300 |
233 | # define LOAD_AVE_TYPE long | |
234 | # endif | |
1e5ba5b5 | 235 | |
3da4f367 JM |
236 | # if defined(alliant) && defined(i860) /* Alliant FX/2800 */ |
237 | # define LOAD_AVE_TYPE long | |
238 | # endif | |
59c0e567 | 239 | |
3da4f367 JM |
240 | # ifdef _AIX |
241 | # define LOAD_AVE_TYPE long | |
242 | # endif | |
bc77c95c | 243 | |
3da4f367 JM |
244 | # ifdef convex |
245 | # define LOAD_AVE_TYPE double | |
246 | # ifndef LDAV_CVT | |
247 | # define LDAV_CVT(n) (n) | |
248 | # endif | |
249 | # endif | |
91bf5fad | 250 | |
3da4f367 | 251 | # endif /* No LOAD_AVE_TYPE. */ |
1e5ba5b5 | 252 | |
3da4f367 | 253 | # ifdef OSF_ALPHA |
f870f3fe RM |
254 | /* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1, |
255 | according to ghazi@noc.rutgers.edu. */ | |
3da4f367 JM |
256 | # undef FSCALE |
257 | # define FSCALE 1024.0 | |
258 | # endif | |
f870f3fe | 259 | |
3da4f367 | 260 | # if defined(alliant) && defined(i860) /* Alliant FX/2800 */ |
bf074c06 RM |
261 | /* <sys/param.h> defines an incorrect value for FSCALE on an |
262 | Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */ | |
3da4f367 JM |
263 | # undef FSCALE |
264 | # define FSCALE 100.0 | |
265 | # endif | |
bf074c06 | 266 | |
f870f3fe | 267 | |
3da4f367 | 268 | # ifndef FSCALE |
1e5ba5b5 RM |
269 | |
270 | /* SunOS and some others define FSCALE in sys/param.h. */ | |
271 | ||
3da4f367 JM |
272 | # ifdef MORE_BSD |
273 | # define FSCALE 2048.0 | |
274 | # endif | |
1e5ba5b5 | 275 | |
3da4f367 JM |
276 | # if defined(MIPS) || defined(SVR4) || defined(decstation) |
277 | # define FSCALE 256 | |
278 | # endif | |
1e5ba5b5 | 279 | |
3da4f367 | 280 | # if defined (sgi) || defined (sequent) |
934d56b7 RM |
281 | /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined |
282 | above under #ifdef MIPS. But we want the sgi value. */ | |
3da4f367 JM |
283 | # undef FSCALE |
284 | # define FSCALE 1000.0 | |
285 | # endif | |
1e5ba5b5 | 286 | |
3da4f367 JM |
287 | # if defined (ardent) && defined (titan) |
288 | # define FSCALE 65536.0 | |
289 | # endif | |
1e5ba5b5 | 290 | |
3da4f367 JM |
291 | # ifdef tek4300 |
292 | # define FSCALE 100.0 | |
293 | # endif | |
59c0e567 | 294 | |
3da4f367 JM |
295 | # ifdef _AIX |
296 | # define FSCALE 65536.0 | |
297 | # endif | |
bc77c95c | 298 | |
3da4f367 | 299 | # endif /* Not FSCALE. */ |
1e5ba5b5 | 300 | |
3da4f367 JM |
301 | # if !defined (LDAV_CVT) && defined (FSCALE) |
302 | # define LDAV_CVT(n) (((double) (n)) / FSCALE) | |
303 | # endif | |
1e5ba5b5 | 304 | |
8eda6c51 | 305 | /* VAX C can't handle multi-line #ifs, or lines longer that 256 characters. */ |
3da4f367 | 306 | # ifndef NLIST_STRUCT |
8eda6c51 | 307 | |
3da4f367 JM |
308 | # ifdef MORE_BSD |
309 | # define NLIST_STRUCT | |
310 | # endif | |
8eda6c51 | 311 | |
3da4f367 JM |
312 | # ifdef sun |
313 | # define NLIST_STRUCT | |
314 | # endif | |
8eda6c51 | 315 | |
3da4f367 JM |
316 | # ifdef decstation |
317 | # define NLIST_STRUCT | |
318 | # endif | |
8eda6c51 | 319 | |
3da4f367 JM |
320 | # ifdef hpux |
321 | # define NLIST_STRUCT | |
322 | # endif | |
8eda6c51 | 323 | |
3da4f367 JM |
324 | # if defined (_SEQUENT_) || defined (sequent) |
325 | # define NLIST_STRUCT | |
326 | # endif | |
8eda6c51 | 327 | |
3da4f367 JM |
328 | # ifdef sgi |
329 | # define NLIST_STRUCT | |
330 | # endif | |
8eda6c51 | 331 | |
3da4f367 JM |
332 | # ifdef SVR4 |
333 | # define NLIST_STRUCT | |
334 | # endif | |
1e5ba5b5 | 335 | |
3da4f367 JM |
336 | # ifdef sony_news |
337 | # define NLIST_STRUCT | |
338 | # endif | |
8eda6c51 | 339 | |
3da4f367 JM |
340 | # ifdef OSF_ALPHA |
341 | # define NLIST_STRUCT | |
342 | # endif | |
8eda6c51 | 343 | |
3da4f367 JM |
344 | # if defined (ardent) && defined (titan) |
345 | # define NLIST_STRUCT | |
346 | # endif | |
8eda6c51 | 347 | |
3da4f367 JM |
348 | # ifdef tek4300 |
349 | # define NLIST_STRUCT | |
350 | # endif | |
8eda6c51 | 351 | |
3da4f367 JM |
352 | # ifdef butterfly |
353 | # define NLIST_STRUCT | |
354 | # endif | |
8eda6c51 | 355 | |
3da4f367 JM |
356 | # if defined(alliant) && defined(i860) /* Alliant FX/2800 */ |
357 | # define NLIST_STRUCT | |
358 | # endif | |
59c0e567 | 359 | |
3da4f367 JM |
360 | # ifdef _AIX |
361 | # define NLIST_STRUCT | |
362 | # endif | |
bc77c95c | 363 | |
3da4f367 | 364 | # endif /* defined (NLIST_STRUCT) */ |
8eda6c51 | 365 | |
1e5ba5b5 | 366 | |
3da4f367 JM |
367 | # if defined(sgi) || (defined(mips) && !defined(BSD)) |
368 | # define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31)) | |
369 | # endif | |
1e5ba5b5 RM |
370 | |
371 | ||
3da4f367 JM |
372 | # if !defined (KERNEL_FILE) && defined (sequent) |
373 | # define KERNEL_FILE "/dynix" | |
374 | # endif | |
1e5ba5b5 | 375 | |
3da4f367 JM |
376 | # if !defined (KERNEL_FILE) && defined (hpux) |
377 | # define KERNEL_FILE "/hp-ux" | |
378 | # endif | |
1e5ba5b5 | 379 | |
3da4f367 JM |
380 | # if !defined(KERNEL_FILE) && (defined(_SEQUENT_) || defined(MIPS) || defined(SVR4) || defined(ISC) || defined (sgi) || (defined (ardent) && defined (titan))) |
381 | # define KERNEL_FILE "/unix" | |
382 | # endif | |
1e5ba5b5 RM |
383 | |
384 | ||
3da4f367 JM |
385 | # if !defined (LDAV_SYMBOL) && defined (alliant) |
386 | # define LDAV_SYMBOL "_Loadavg" | |
387 | # endif | |
1e5ba5b5 | 388 | |
3da4f367 JM |
389 | # if !defined(LDAV_SYMBOL) && ((defined(hpux) && !defined(hp9000s300)) || defined(_SEQUENT_) || defined(SVR4) || defined(ISC) || defined(sgi) || (defined (ardent) && defined (titan)) || defined (_AIX)) |
390 | # define LDAV_SYMBOL "avenrun" | |
391 | # endif | |
1e5ba5b5 | 392 | |
3da4f367 JM |
393 | # ifdef HAVE_UNISTD_H |
394 | # include <unistd.h> | |
395 | # endif | |
1e5ba5b5 | 396 | |
3da4f367 | 397 | # include <stdio.h> |
1e5ba5b5 RM |
398 | |
399 | /* LOAD_AVE_TYPE should only get defined if we're going to use the | |
400 | nlist method. */ | |
3da4f367 JM |
401 | # if !defined(LOAD_AVE_TYPE) && (defined(BSD) || defined(LDAV_CVT) || defined(KERNEL_FILE) || defined(LDAV_SYMBOL)) |
402 | # define LOAD_AVE_TYPE double | |
403 | # endif | |
404 | ||
405 | # ifdef LOAD_AVE_TYPE | |
406 | ||
407 | # ifndef VMS | |
408 | # ifndef __linux__ | |
409 | # ifndef NLIST_STRUCT | |
410 | # include <a.out.h> | |
411 | # else /* NLIST_STRUCT */ | |
412 | # include <nlist.h> | |
413 | # endif /* NLIST_STRUCT */ | |
414 | ||
415 | # ifdef SUNOS_5 | |
416 | # include <fcntl.h> | |
417 | # include <kvm.h> | |
418 | # include <kstat.h> | |
419 | # endif | |
420 | ||
421 | # if defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC) | |
422 | # include <sys/pstat.h> | |
423 | # endif | |
424 | ||
425 | # ifndef KERNEL_FILE | |
426 | # define KERNEL_FILE "/vmunix" | |
427 | # endif /* KERNEL_FILE */ | |
428 | ||
429 | # ifndef LDAV_SYMBOL | |
430 | # define LDAV_SYMBOL "_avenrun" | |
431 | # endif /* LDAV_SYMBOL */ | |
432 | # endif /* __linux__ */ | |
433 | ||
434 | # else /* VMS */ | |
435 | ||
436 | # ifndef eunice | |
437 | # include <iodef.h> | |
438 | # include <descrip.h> | |
439 | # else /* eunice */ | |
440 | # include <vms/iodef.h> | |
441 | # endif /* eunice */ | |
442 | # endif /* VMS */ | |
443 | ||
444 | # ifndef LDAV_CVT | |
445 | # define LDAV_CVT(n) ((double) (n)) | |
446 | # endif /* !LDAV_CVT */ | |
447 | ||
448 | # endif /* LOAD_AVE_TYPE */ | |
449 | ||
d282be16 RS |
450 | # if defined(__GNU__) && !defined (NeXT) |
451 | /* Note that NeXT Openstep defines __GNU__ even though it should not. */ | |
452 | /* GNU system acts much like NeXT, for load average purposes, | |
453 | but not exactly. */ | |
2c30b2fc MB |
454 | # define NeXT |
455 | # define host_self mach_host_self | |
456 | # endif | |
457 | ||
3da4f367 JM |
458 | # ifdef NeXT |
459 | # ifdef HAVE_MACH_MACH_H | |
460 | # include <mach/mach.h> | |
461 | # else | |
462 | # include <mach.h> | |
463 | # endif | |
464 | # endif /* NeXT */ | |
465 | ||
466 | # ifdef sgi | |
467 | # include <sys/sysmp.h> | |
468 | # endif /* sgi */ | |
469 | ||
470 | # ifdef UMAX | |
471 | # include <stdio.h> | |
472 | # include <signal.h> | |
473 | # include <sys/time.h> | |
474 | # include <sys/wait.h> | |
475 | # include <sys/syscall.h> | |
476 | ||
477 | # ifdef UMAX_43 | |
478 | # include <machine/cpu.h> | |
479 | # include <inq_stats/statistics.h> | |
480 | # include <inq_stats/sysstats.h> | |
481 | # include <inq_stats/cpustats.h> | |
482 | # include <inq_stats/procstats.h> | |
483 | # else /* Not UMAX_43. */ | |
484 | # include <sys/sysdefs.h> | |
485 | # include <sys/statistics.h> | |
486 | # include <sys/sysstats.h> | |
487 | # include <sys/cpudefs.h> | |
488 | # include <sys/cpustats.h> | |
489 | # include <sys/procstats.h> | |
490 | # endif /* Not UMAX_43. */ | |
491 | # endif /* UMAX */ | |
492 | ||
493 | # ifdef DGUX | |
494 | # include <sys/dg_sys_info.h> | |
495 | # endif | |
496 | ||
497 | # if defined(HAVE_FCNTL_H) || defined(_POSIX_VERSION) | |
498 | # include <fcntl.h> | |
499 | # else | |
500 | # include <sys/file.h> | |
501 | # endif | |
1e5ba5b5 RM |
502 | \f |
503 | /* Avoid static vars inside a function since in HPUX they dump as pure. */ | |
504 | ||
3da4f367 | 505 | # ifdef NeXT |
1e5ba5b5 RM |
506 | static processor_set_t default_set; |
507 | static int getloadavg_initialized; | |
3da4f367 | 508 | # endif /* NeXT */ |
1e5ba5b5 | 509 | |
3da4f367 | 510 | # ifdef UMAX |
1e5ba5b5 RM |
511 | static unsigned int cpus = 0; |
512 | static unsigned int samples; | |
3da4f367 | 513 | # endif /* UMAX */ |
1e5ba5b5 | 514 | |
3da4f367 | 515 | # ifdef DGUX |
1e5ba5b5 | 516 | static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */ |
3da4f367 | 517 | # endif /* DGUX */ |
1e5ba5b5 | 518 | |
3da4f367 | 519 | # ifdef LOAD_AVE_TYPE |
1e5ba5b5 RM |
520 | /* File descriptor open to /dev/kmem or VMS load ave driver. */ |
521 | static int channel; | |
522 | /* Nonzero iff channel is valid. */ | |
523 | static int getloadavg_initialized; | |
524 | /* Offset in kmem to seek to read load average, or 0 means invalid. */ | |
525 | static long offset; | |
526 | ||
3da4f367 | 527 | # if !defined(VMS) && !defined(sgi) && !defined(__linux__) |
1e5ba5b5 | 528 | static struct nlist nl[2]; |
3da4f367 | 529 | # endif /* Not VMS or sgi */ |
1e5ba5b5 | 530 | |
3da4f367 | 531 | # ifdef SUNOS_5 |
1e5ba5b5 | 532 | static kvm_t *kd; |
3da4f367 | 533 | # endif /* SUNOS_5 */ |
1e5ba5b5 | 534 | |
3da4f367 | 535 | # endif /* LOAD_AVE_TYPE */ |
1e5ba5b5 RM |
536 | \f |
537 | /* Put the 1 minute, 5 minute and 15 minute load averages | |
538 | into the first NELEM elements of LOADAVG. | |
039e9c8b | 539 | Return the number written (never more than 3, but may be less than NELEM), |
1e5ba5b5 RM |
540 | or -1 if an error occurred. */ |
541 | ||
542 | int | |
543 | getloadavg (loadavg, nelem) | |
544 | double loadavg[]; | |
545 | int nelem; | |
546 | { | |
547 | int elem = 0; /* Return value. */ | |
548 | ||
3da4f367 JM |
549 | # ifdef NO_GET_LOAD_AVG |
550 | # define LDAV_DONE | |
7ee260fe RM |
551 | /* Set errno to zero to indicate that there was no particular error; |
552 | this function just can't work at all on this system. */ | |
553 | errno = 0; | |
554 | elem = -1; | |
3da4f367 | 555 | # endif |
7ee260fe | 556 | |
6b2e9efd | 557 | # if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT) |
4e98d4fa | 558 | /* Use libkstat because we don't have to be root. */ |
3da4f367 | 559 | # define LDAV_DONE |
4e98d4fa RS |
560 | kstat_ctl_t *kc; |
561 | kstat_t *ksp; | |
562 | kstat_named_t *kn; | |
563 | ||
564 | kc = kstat_open (); | |
3da4f367 JM |
565 | if (kc == 0) |
566 | return -1; | |
4e98d4fa | 567 | ksp = kstat_lookup (kc, "unix", 0, "system_misc"); |
3da4f367 JM |
568 | if (ksp == 0 ) |
569 | return -1; | |
570 | if (kstat_read (kc, ksp, 0) == -1) | |
571 | return -1; | |
73a46a9c | 572 | |
4e98d4fa RS |
573 | |
574 | kn = kstat_data_lookup (ksp, "avenrun_1min"); | |
575 | if (kn == 0) | |
576 | { | |
577 | /* Return -1 if no load average information is available. */ | |
578 | nelem = 0; | |
579 | elem = -1; | |
580 | } | |
581 | ||
582 | if (nelem >= 1) | |
583 | loadavg[elem++] = (double) kn->value.ul/FSCALE; | |
584 | ||
585 | if (nelem >= 2) | |
586 | { | |
587 | kn = kstat_data_lookup (ksp, "avenrun_5min"); | |
588 | if (kn != 0) | |
589 | { | |
590 | loadavg[elem++] = (double) kn->value.ul/FSCALE; | |
591 | ||
592 | if (nelem >= 3) | |
593 | { | |
594 | kn = kstat_data_lookup (ksp, "avenrun_15min"); | |
595 | if (kn != 0) | |
596 | loadavg[elem++] = (double) kn->value.ul/FSCALE; | |
597 | } | |
598 | } | |
599 | } | |
600 | ||
601 | kstat_close (kc); | |
6b2e9efd | 602 | # endif /* HAVE_LIBKSTAT */ |
4e98d4fa | 603 | |
3da4f367 JM |
604 | # if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC) |
605 | /* Use pstat_getdynamic() because we don't have to be root. */ | |
606 | # define LDAV_DONE | |
607 | # undef LOAD_AVE_TYPE | |
1e5ba5b5 | 608 | |
3da4f367 JM |
609 | struct pst_dynamic dyn_info; |
610 | if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0) | |
611 | return -1; | |
612 | if (nelem > 0) | |
613 | loadavg[elem++] = dyn_info.psd_avg_1_min; | |
614 | if (nelem > 1) | |
615 | loadavg[elem++] = dyn_info.psd_avg_5_min; | |
616 | if (nelem > 2) | |
617 | loadavg[elem++] = dyn_info.psd_avg_15_min; | |
618 | ||
619 | # endif /* hpux && HAVE_PSTAT_GETDYNAMIC */ | |
620 | ||
621 | # if !defined (LDAV_DONE) && defined (__linux__) | |
622 | # define LDAV_DONE | |
623 | # undef LOAD_AVE_TYPE | |
624 | ||
625 | # ifndef LINUX_LDAV_FILE | |
626 | # define LINUX_LDAV_FILE "/proc/loadavg" | |
627 | # endif | |
1e5ba5b5 RM |
628 | |
629 | char ldavgbuf[40]; | |
630 | double load_ave[3]; | |
631 | int fd, count; | |
632 | ||
633 | fd = open (LINUX_LDAV_FILE, O_RDONLY); | |
634 | if (fd == -1) | |
635 | return -1; | |
636 | count = read (fd, ldavgbuf, 40); | |
637 | (void) close (fd); | |
638 | if (count <= 0) | |
639 | return -1; | |
640 | ||
641 | count = sscanf (ldavgbuf, "%lf %lf %lf", | |
642 | &load_ave[0], &load_ave[1], &load_ave[2]); | |
643 | if (count < 1) | |
644 | return -1; | |
645 | ||
646 | for (elem = 0; elem < nelem && elem < count; elem++) | |
647 | loadavg[elem] = load_ave[elem]; | |
648 | ||
649 | return elem; | |
650 | ||
3da4f367 | 651 | # endif /* __linux__ */ |
1e5ba5b5 | 652 | |
3da4f367 JM |
653 | # if !defined (LDAV_DONE) && defined (__NetBSD__) |
654 | # define LDAV_DONE | |
655 | # undef LOAD_AVE_TYPE | |
9eb8034b | 656 | |
3da4f367 JM |
657 | # ifndef NETBSD_LDAV_FILE |
658 | # define NETBSD_LDAV_FILE "/kern/loadavg" | |
659 | # endif | |
9eb8034b RM |
660 | |
661 | unsigned long int load_ave[3], scale; | |
662 | int count; | |
663 | FILE *fp; | |
664 | ||
8f090e85 | 665 | fp = fopen (NETBSD_LDAV_FILE, "r"); |
9eb8034b RM |
666 | if (fp == NULL) |
667 | return -1; | |
668 | count = fscanf (fp, "%lu %lu %lu %lu\n", | |
669 | &load_ave[0], &load_ave[1], &load_ave[2], | |
670 | &scale); | |
671 | (void) fclose (fp); | |
672 | if (count != 4) | |
673 | return -1; | |
674 | ||
675 | for (elem = 0; elem < nelem; elem++) | |
676 | loadavg[elem] = (double) load_ave[elem] / (double) scale; | |
677 | ||
678 | return elem; | |
679 | ||
3da4f367 | 680 | # endif /* __NetBSD__ */ |
9eb8034b | 681 | |
3da4f367 JM |
682 | # if !defined (LDAV_DONE) && defined (NeXT) |
683 | # define LDAV_DONE | |
1e5ba5b5 RM |
684 | /* The NeXT code was adapted from iscreen 3.2. */ |
685 | ||
686 | host_t host; | |
687 | struct processor_set_basic_info info; | |
688 | unsigned info_count; | |
689 | ||
039e9c8b DM |
690 | /* We only know how to get the 1-minute average for this system, |
691 | so even if the caller asks for more than 1, we only return 1. */ | |
1e5ba5b5 RM |
692 | |
693 | if (!getloadavg_initialized) | |
694 | { | |
695 | if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS) | |
696 | getloadavg_initialized = 1; | |
697 | } | |
698 | ||
699 | if (getloadavg_initialized) | |
700 | { | |
701 | info_count = PROCESSOR_SET_BASIC_INFO_COUNT; | |
702 | if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host, | |
3da4f367 | 703 | (processor_set_info_t) &info, &info_count) |
1e5ba5b5 RM |
704 | != KERN_SUCCESS) |
705 | getloadavg_initialized = 0; | |
706 | else | |
707 | { | |
708 | if (nelem > 0) | |
709 | loadavg[elem++] = (double) info.load_average / LOAD_SCALE; | |
710 | } | |
711 | } | |
712 | ||
713 | if (!getloadavg_initialized) | |
714 | return -1; | |
3da4f367 | 715 | # endif /* NeXT */ |
1e5ba5b5 | 716 | |
3da4f367 JM |
717 | # if !defined (LDAV_DONE) && defined (UMAX) |
718 | # define LDAV_DONE | |
1e5ba5b5 RM |
719 | /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not |
720 | have a /dev/kmem. Information about the workings of the running kernel | |
721 | can be gathered with inq_stats system calls. | |
722 | We only know how to get the 1-minute average for this system. */ | |
723 | ||
724 | struct proc_summary proc_sum_data; | |
725 | struct stat_descr proc_info; | |
726 | double load; | |
727 | register unsigned int i, j; | |
728 | ||
729 | if (cpus == 0) | |
730 | { | |
731 | register unsigned int c, i; | |
732 | struct cpu_config conf; | |
733 | struct stat_descr desc; | |
734 | ||
735 | desc.sd_next = 0; | |
736 | desc.sd_subsys = SUBSYS_CPU; | |
737 | desc.sd_type = CPUTYPE_CONFIG; | |
738 | desc.sd_addr = (char *) &conf; | |
739 | desc.sd_size = sizeof conf; | |
740 | ||
741 | if (inq_stats (1, &desc)) | |
742 | return -1; | |
743 | ||
744 | c = 0; | |
745 | for (i = 0; i < conf.config_maxclass; ++i) | |
746 | { | |
747 | struct class_stats stats; | |
748 | bzero ((char *) &stats, sizeof stats); | |
749 | ||
750 | desc.sd_type = CPUTYPE_CLASS; | |
751 | desc.sd_objid = i; | |
752 | desc.sd_addr = (char *) &stats; | |
753 | desc.sd_size = sizeof stats; | |
754 | ||
755 | if (inq_stats (1, &desc)) | |
756 | return -1; | |
757 | ||
758 | c += stats.class_numcpus; | |
759 | } | |
760 | cpus = c; | |
761 | samples = cpus < 2 ? 3 : (2 * cpus / 3); | |
762 | } | |
763 | ||
764 | proc_info.sd_next = 0; | |
765 | proc_info.sd_subsys = SUBSYS_PROC; | |
766 | proc_info.sd_type = PROCTYPE_SUMMARY; | |
767 | proc_info.sd_addr = (char *) &proc_sum_data; | |
768 | proc_info.sd_size = sizeof (struct proc_summary); | |
769 | proc_info.sd_sizeused = 0; | |
770 | ||
771 | if (inq_stats (1, &proc_info) != 0) | |
772 | return -1; | |
773 | ||
774 | load = proc_sum_data.ps_nrunnable; | |
775 | j = 0; | |
776 | for (i = samples - 1; i > 0; --i) | |
777 | { | |
778 | load += proc_sum_data.ps_nrun[j]; | |
779 | if (j++ == PS_NRUNSIZE) | |
780 | j = 0; | |
781 | } | |
782 | ||
783 | if (nelem > 0) | |
784 | loadavg[elem++] = load / samples / cpus; | |
3da4f367 | 785 | # endif /* UMAX */ |
1e5ba5b5 | 786 | |
3da4f367 JM |
787 | # if !defined (LDAV_DONE) && defined (DGUX) |
788 | # define LDAV_DONE | |
1e5ba5b5 RM |
789 | /* This call can return -1 for an error, but with good args |
790 | it's not supposed to fail. The first argument is for no | |
791 | apparent reason of type `long int *'. */ | |
792 | dg_sys_info ((long int *) &load_info, | |
793 | DG_SYS_INFO_LOAD_INFO_TYPE, | |
794 | DG_SYS_INFO_LOAD_VERSION_0); | |
795 | ||
796 | if (nelem > 0) | |
797 | loadavg[elem++] = load_info.one_minute; | |
798 | if (nelem > 1) | |
799 | loadavg[elem++] = load_info.five_minute; | |
800 | if (nelem > 2) | |
801 | loadavg[elem++] = load_info.fifteen_minute; | |
3da4f367 | 802 | # endif /* DGUX */ |
1e5ba5b5 | 803 | |
3da4f367 JM |
804 | # if !defined (LDAV_DONE) && defined (apollo) |
805 | # define LDAV_DONE | |
1e5ba5b5 RM |
806 | /* Apollo code from lisch@mentorg.com (Ray Lischner). |
807 | ||
808 | This system call is not documented. The load average is obtained as | |
809 | three long integers, for the load average over the past minute, | |
810 | five minutes, and fifteen minutes. Each value is a scaled integer, | |
811 | with 16 bits of integer part and 16 bits of fraction part. | |
812 | ||
813 | I'm not sure which operating system first supported this system call, | |
814 | but I know that SR10.2 supports it. */ | |
815 | ||
816 | extern void proc1_$get_loadav (); | |
817 | unsigned long load_ave[3]; | |
818 | ||
819 | proc1_$get_loadav (load_ave); | |
820 | ||
821 | if (nelem > 0) | |
822 | loadavg[elem++] = load_ave[0] / 65536.0; | |
823 | if (nelem > 1) | |
824 | loadavg[elem++] = load_ave[1] / 65536.0; | |
825 | if (nelem > 2) | |
826 | loadavg[elem++] = load_ave[2] / 65536.0; | |
3da4f367 | 827 | # endif /* apollo */ |
1e5ba5b5 | 828 | |
3da4f367 JM |
829 | # if !defined (LDAV_DONE) && defined (OSF_MIPS) |
830 | # define LDAV_DONE | |
1e5ba5b5 RM |
831 | |
832 | struct tbl_loadavg load_ave; | |
833 | table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave)); | |
7ee260fe RM |
834 | loadavg[elem++] |
835 | = (load_ave.tl_lscale == 0 | |
836 | ? load_ave.tl_avenrun.d[0] | |
837 | : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale)); | |
3da4f367 | 838 | # endif /* OSF_MIPS */ |
1e5ba5b5 | 839 | |
383ebe49 | 840 | # if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32)) |
3da4f367 | 841 | # define LDAV_DONE |
a7ee71e8 RS |
842 | |
843 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
26ff97e7 | 844 | for ( ; elem < nelem; elem++) |
a7ee71e8 RS |
845 | { |
846 | loadavg[elem] = 0.0; | |
847 | } | |
383ebe49 | 848 | # endif /* __MSDOS__ || WINDOWS32 */ |
a7ee71e8 | 849 | |
3da4f367 JM |
850 | # if !defined (LDAV_DONE) && defined (OSF_ALPHA) |
851 | # define LDAV_DONE | |
bbd619d7 RS |
852 | |
853 | struct tbl_loadavg load_ave; | |
854 | table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave)); | |
855 | for (elem = 0; elem < nelem; elem++) | |
856 | loadavg[elem] | |
857 | = (load_ave.tl_lscale == 0 | |
858 | ? load_ave.tl_avenrun.d[elem] | |
859 | : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale)); | |
3da4f367 | 860 | # endif /* OSF_ALPHA */ |
bbd619d7 | 861 | |
3da4f367 | 862 | # if !defined (LDAV_DONE) && defined (VMS) |
1e5ba5b5 RM |
863 | /* VMS specific code -- read from the Load Ave driver. */ |
864 | ||
865 | LOAD_AVE_TYPE load_ave[3]; | |
866 | static int getloadavg_initialized = 0; | |
3da4f367 | 867 | # ifdef eunice |
1e5ba5b5 RM |
868 | struct |
869 | { | |
870 | int dsc$w_length; | |
871 | char *dsc$a_pointer; | |
872 | } descriptor; | |
3da4f367 | 873 | # endif |
1e5ba5b5 RM |
874 | |
875 | /* Ensure that there is a channel open to the load ave device. */ | |
876 | if (!getloadavg_initialized) | |
877 | { | |
878 | /* Attempt to open the channel. */ | |
3da4f367 | 879 | # ifdef eunice |
1e5ba5b5 RM |
880 | descriptor.dsc$w_length = 18; |
881 | descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE"; | |
3da4f367 | 882 | # else |
1e5ba5b5 | 883 | $DESCRIPTOR (descriptor, "LAV0:"); |
3da4f367 | 884 | # endif |
1e5ba5b5 RM |
885 | if (sys$assign (&descriptor, &channel, 0, 0) & 1) |
886 | getloadavg_initialized = 1; | |
887 | } | |
888 | ||
889 | /* Read the load average vector. */ | |
890 | if (getloadavg_initialized | |
891 | && !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0, | |
892 | load_ave, 12, 0, 0, 0, 0) & 1)) | |
893 | { | |
894 | sys$dassgn (channel); | |
895 | getloadavg_initialized = 0; | |
896 | } | |
897 | ||
898 | if (!getloadavg_initialized) | |
899 | return -1; | |
3da4f367 | 900 | # endif /* VMS */ |
1e5ba5b5 | 901 | |
3da4f367 | 902 | # if !defined (LDAV_DONE) && defined(LOAD_AVE_TYPE) && !defined(VMS) |
1e5ba5b5 RM |
903 | |
904 | /* UNIX-specific code -- read the average from /dev/kmem. */ | |
905 | ||
3da4f367 | 906 | # define LDAV_PRIVILEGED /* This code requires special installation. */ |
1e5ba5b5 RM |
907 | |
908 | LOAD_AVE_TYPE load_ave[3]; | |
909 | ||
910 | /* Get the address of LDAV_SYMBOL. */ | |
911 | if (offset == 0) | |
912 | { | |
3da4f367 JM |
913 | # ifndef sgi |
914 | # ifndef NLIST_STRUCT | |
1e5ba5b5 RM |
915 | strcpy (nl[0].n_name, LDAV_SYMBOL); |
916 | strcpy (nl[1].n_name, ""); | |
3da4f367 JM |
917 | # else /* NLIST_STRUCT */ |
918 | # ifdef NLIST_NAME_UNION | |
1e5ba5b5 RM |
919 | nl[0].n_un.n_name = LDAV_SYMBOL; |
920 | nl[1].n_un.n_name = 0; | |
3da4f367 | 921 | # else /* not NLIST_NAME_UNION */ |
1e5ba5b5 RM |
922 | nl[0].n_name = LDAV_SYMBOL; |
923 | nl[1].n_name = 0; | |
3da4f367 JM |
924 | # endif /* not NLIST_NAME_UNION */ |
925 | # endif /* NLIST_STRUCT */ | |
1e5ba5b5 | 926 | |
3da4f367 | 927 | # ifndef SUNOS_5 |
bc77c95c | 928 | if ( |
3da4f367 | 929 | # if !(defined (_AIX) && !defined (ps2)) |
bc77c95c | 930 | nlist (KERNEL_FILE, nl) |
3da4f367 | 931 | # else /* _AIX */ |
bc77c95c | 932 | knlist (nl, 1, sizeof (nl[0])) |
3da4f367 | 933 | # endif |
bc77c95c RM |
934 | >= 0) |
935 | /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */ | |
936 | { | |
3da4f367 | 937 | # ifdef FIXUP_KERNEL_SYMBOL_ADDR |
bc77c95c | 938 | FIXUP_KERNEL_SYMBOL_ADDR (nl); |
3da4f367 | 939 | # endif |
bc77c95c RM |
940 | offset = nl[0].n_value; |
941 | } | |
3da4f367 JM |
942 | # endif /* !SUNOS_5 */ |
943 | # else /* sgi */ | |
944 | int ldav_off; | |
945 | ||
946 | ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN); | |
947 | if (ldav_off != -1) | |
948 | offset = (long) ldav_off & 0x7fffffff; | |
949 | # endif /* sgi */ | |
950 | } | |
1e5ba5b5 RM |
951 | |
952 | /* Make sure we have /dev/kmem open. */ | |
953 | if (!getloadavg_initialized) | |
954 | { | |
3da4f367 | 955 | # ifndef SUNOS_5 |
1e5ba5b5 RM |
956 | channel = open ("/dev/kmem", 0); |
957 | if (channel >= 0) | |
00f7bd72 RM |
958 | { |
959 | /* Set the channel to close on exec, so it does not | |
960 | litter any child's descriptor table. */ | |
3da4f367 JM |
961 | # ifdef FD_SETFD |
962 | # ifndef FD_CLOEXEC | |
963 | # define FD_CLOEXEC 1 | |
964 | # endif | |
00f7bd72 | 965 | (void) fcntl (channel, F_SETFD, FD_CLOEXEC); |
3da4f367 | 966 | # endif |
00f7bd72 RM |
967 | getloadavg_initialized = 1; |
968 | } | |
3da4f367 | 969 | # else /* SUNOS_5 */ |
fb3ebe6c DM |
970 | /* We pass 0 for the kernel, corefile, and swapfile names |
971 | to use the currently running kernel. */ | |
1e5ba5b5 | 972 | kd = kvm_open (0, 0, 0, O_RDONLY, 0); |
26ff97e7 | 973 | if (kd != 0) |
1e5ba5b5 | 974 | { |
fb3ebe6c | 975 | /* nlist the currently running kernel. */ |
1e5ba5b5 | 976 | kvm_nlist (kd, nl); |
fb3ebe6c | 977 | offset = nl[0].n_value; |
1e5ba5b5 RM |
978 | getloadavg_initialized = 1; |
979 | } | |
3da4f367 | 980 | # endif /* SUNOS_5 */ |
1e5ba5b5 RM |
981 | } |
982 | ||
983 | /* If we can, get the load average values. */ | |
984 | if (offset && getloadavg_initialized) | |
985 | { | |
986 | /* Try to read the load. */ | |
3da4f367 | 987 | # ifndef SUNOS_5 |
1e5ba5b5 RM |
988 | if (lseek (channel, offset, 0) == -1L |
989 | || read (channel, (char *) load_ave, sizeof (load_ave)) | |
990 | != sizeof (load_ave)) | |
991 | { | |
992 | close (channel); | |
993 | getloadavg_initialized = 0; | |
994 | } | |
3da4f367 | 995 | # else /* SUNOS_5 */ |
1e5ba5b5 RM |
996 | if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave)) |
997 | != sizeof (load_ave)) | |
998 | { | |
999 | kvm_close (kd); | |
1000 | getloadavg_initialized = 0; | |
1001 | } | |
3da4f367 | 1002 | # endif /* SUNOS_5 */ |
1e5ba5b5 RM |
1003 | } |
1004 | ||
1005 | if (offset == 0 || !getloadavg_initialized) | |
1006 | return -1; | |
3da4f367 | 1007 | # endif /* LOAD_AVE_TYPE and not VMS */ |
1e5ba5b5 | 1008 | |
3da4f367 | 1009 | # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */ |
1e5ba5b5 RM |
1010 | if (nelem > 0) |
1011 | loadavg[elem++] = LDAV_CVT (load_ave[0]); | |
1012 | if (nelem > 1) | |
1013 | loadavg[elem++] = LDAV_CVT (load_ave[1]); | |
1014 | if (nelem > 2) | |
1015 | loadavg[elem++] = LDAV_CVT (load_ave[2]); | |
1016 | ||
3da4f367 JM |
1017 | # define LDAV_DONE |
1018 | # endif /* !LDAV_DONE && LOAD_AVE_TYPE */ | |
1e5ba5b5 | 1019 | |
3da4f367 | 1020 | # ifdef LDAV_DONE |
1e5ba5b5 | 1021 | return elem; |
3da4f367 | 1022 | # else |
1e5ba5b5 RM |
1023 | /* Set errno to zero to indicate that there was no particular error; |
1024 | this function just can't work at all on this system. */ | |
1025 | errno = 0; | |
1026 | return -1; | |
3da4f367 | 1027 | # endif |
1e5ba5b5 | 1028 | } |
04402ae3 RM |
1029 | |
1030 | #endif /* ! HAVE_GETLOADAVG */ | |
1e5ba5b5 RM |
1031 | \f |
1032 | #ifdef TEST | |
1033 | void | |
1034 | main (argc, argv) | |
1035 | int argc; | |
1036 | char **argv; | |
1037 | { | |
1038 | int naptime = 0; | |
1039 | ||
1040 | if (argc > 1) | |
1041 | naptime = atoi (argv[1]); | |
1042 | ||
1e5ba5b5 RM |
1043 | while (1) |
1044 | { | |
1045 | double avg[3]; | |
1046 | int loads; | |
1047 | ||
1048 | errno = 0; /* Don't be misled if it doesn't set errno. */ | |
1049 | loads = getloadavg (avg, 3); | |
1050 | if (loads == -1) | |
1051 | { | |
1052 | perror ("Error getting load average"); | |
1053 | exit (1); | |
1054 | } | |
1055 | if (loads > 0) | |
1056 | printf ("1-minute: %f ", avg[0]); | |
1057 | if (loads > 1) | |
1058 | printf ("5-minute: %f ", avg[1]); | |
1059 | if (loads > 2) | |
1060 | printf ("15-minute: %f ", avg[2]); | |
1061 | if (loads > 0) | |
1062 | putchar ('\n'); | |
db6730c7 RM |
1063 | |
1064 | if (naptime == 0) | |
1065 | break; | |
1e5ba5b5 RM |
1066 | sleep (naptime); |
1067 | } | |
db6730c7 RM |
1068 | |
1069 | exit (0); | |
1e5ba5b5 RM |
1070 | } |
1071 | #endif /* TEST */ |