Commit | Line | Data |
---|---|---|
1e5ba5b5 | 1 | /* Get the system load averages. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994, 1995, |
3 | 1997, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. | |
1e5ba5b5 | 4 | |
87c35974 DL |
5 | NOTE: The canonical source of this file is maintained with gnulib. |
6 | Bugs can be reported to bug-gnulib@gnu.org. | |
7 | ||
1e5ba5b5 RM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
4fc5845f | 20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
0468655b | 21 | USA. */ |
1e5ba5b5 RM |
22 | |
23 | /* Compile-time symbols that this file uses: | |
24 | ||
579c8381 JM |
25 | HAVE_PSTAT_GETDYNAMIC Define this if your system has the |
26 | pstat_getdynamic function. I think it | |
27 | is unique to HPUX9. The best way to get the | |
28 | definition is through the AC_FUNC_GETLOADAVG | |
29 | macro that comes with autoconf 2.13 or newer. | |
30 | If that isn't an option, then just put | |
31 | AC_CHECK_FUNCS(pstat_getdynamic) in your | |
32 | configure.in file. | |
1e5ba5b5 RM |
33 | FIXUP_KERNEL_SYMBOL_ADDR() Adjust address in returned struct nlist. |
34 | KERNEL_FILE Pathname of the kernel to nlist. | |
35 | LDAV_CVT() Scale the load average from the kernel. | |
36 | Returns a double. | |
37 | LDAV_SYMBOL Name of kernel symbol giving load average. | |
38 | LOAD_AVE_TYPE Type of the load average array in the kernel. | |
39 | Must be defined unless one of | |
40 | apollo, DGUX, NeXT, or UMAX is defined; | |
102f4b17 | 41 | or we have libkstat; |
1e5ba5b5 | 42 | otherwise, no load average is available. |
87c35974 DL |
43 | HAVE_NLIST_H nlist.h is available. NLIST_STRUCT defaults |
44 | to this. | |
1e5ba5b5 RM |
45 | NLIST_STRUCT Include nlist.h, not a.out.h, and |
46 | the nlist n_name element is a pointer, | |
47 | not an array. | |
87c35974 | 48 | HAVE_STRUCT_NLIST_N_UN_N_NAME `n_un.n_name' is member of `struct nlist'. |
22ddf250 | 49 | LINUX_LDAV_FILE [__linux__]: File containing load averages. |
87c35974 DL |
50 | HAVE_LOCALE_H locale.h is available. |
51 | HAVE_SETLOCALE The `setlocale' function is available. | |
1e5ba5b5 RM |
52 | |
53 | Specific system predefines this file uses, aside from setting | |
54 | default values if not emacs: | |
55 | ||
56 | apollo | |
57 | BSD Real BSD, not just BSD-like. | |
91bf5fad | 58 | convex |
1e5ba5b5 RM |
59 | DGUX |
60 | eunice UNIX emulator under VMS. | |
61 | hpux | |
383ebe49 | 62 | __MSDOS__ No-op for MSDOS. |
1e5ba5b5 RM |
63 | NeXT |
64 | sgi | |
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) | |
68 | UMAX | |
69 | UMAX4_3 | |
70 | VMS | |
383ebe49 | 71 | WINDOWS32 No-op for Windows95/NT. |
22ddf250 | 72 | __linux__ Linux: assumes /proc filesystem mounted. |
1e5ba5b5 | 73 | Support from Michael K. Johnson. |
9eb8034b | 74 | __NetBSD__ NetBSD: assumes /kern filesystem mounted. |
1e5ba5b5 RM |
75 | |
76 | In addition, to avoid nesting many #ifdefs, we internally set | |
77 | LDAV_DONE to indicate that the load average has been computed. | |
78 | ||
79 | We also #define LDAV_PRIVILEGED if a program will require | |
80 | special installation to be able to call getloadavg. */ | |
81 | ||
df3dd7d6 RM |
82 | /* This should always be first. */ |
83 | #ifdef HAVE_CONFIG_H | |
3da4f367 | 84 | # include <config.h> |
df3dd7d6 RM |
85 | #endif |
86 | ||
1e5ba5b5 RM |
87 | #include <sys/types.h> |
88 | ||
89 | /* Both the Emacs and non-Emacs sections want this. Some | |
90 | configuration files' definitions for the LOAD_AVE_CVT macro (like | |
91 | sparc.h's) use macros like FSCALE, defined here. */ | |
2b86fcb1 | 92 | #if defined (unix) || defined (__unix) |
3da4f367 | 93 | # include <sys/param.h> |
1e5ba5b5 RM |
94 | #endif |
95 | ||
96 | ||
04402ae3 | 97 | /* Exclude all the code except the test program at the end |
39c5a83f RM |
98 | if the system has its own `getloadavg' function. |
99 | ||
100 | The declaration of `errno' is needed by the test program | |
101 | as well as the function itself, so it comes first. */ | |
102 | ||
103 | #include <errno.h> | |
104 | ||
105 | #ifndef errno | |
106 | extern int errno; | |
107 | #endif | |
04402ae3 | 108 | |
87c35974 DL |
109 | #ifdef HAVE_LOCALE_H |
110 | # include <locale.h> | |
111 | #endif | |
112 | #ifndef HAVE_SETLOCALE | |
113 | # define setlocale(Category, Locale) /* empty */ | |
114 | #endif | |
04402ae3 | 115 | |
87c35974 | 116 | #ifndef HAVE_GETLOADAVG |
04402ae3 | 117 | |
1e5ba5b5 RM |
118 | /* The existing Emacs configuration files define a macro called |
119 | LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and | |
120 | returns the load average multiplied by 100. What we actually want | |
121 | is a macro called LDAV_CVT, which returns the load average as an | |
122 | unmultiplied double. | |
123 | ||
124 | For backwards compatibility, we'll define LDAV_CVT in terms of | |
125 | LOAD_AVE_CVT, but future machine config files should just define | |
126 | LDAV_CVT directly. */ | |
127 | ||
3da4f367 JM |
128 | # if !defined(LDAV_CVT) && defined(LOAD_AVE_CVT) |
129 | # define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0) | |
130 | # endif | |
1e5ba5b5 | 131 | |
3da4f367 | 132 | # if !defined (BSD) && defined (ultrix) |
1e5ba5b5 | 133 | /* Ultrix behaves like BSD on Vaxen. */ |
3da4f367 JM |
134 | # define BSD |
135 | # endif | |
1e5ba5b5 | 136 | |
3da4f367 | 137 | # ifdef NeXT |
1e5ba5b5 RM |
138 | /* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which |
139 | conflicts with the definition understood in this file, that this | |
140 | really is BSD. */ | |
3da4f367 | 141 | # undef BSD |
1e5ba5b5 RM |
142 | |
143 | /* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being | |
144 | defined to mean that the nlist method should be used, which is not true. */ | |
3da4f367 JM |
145 | # undef FSCALE |
146 | # endif | |
1e5ba5b5 | 147 | |
432eec29 RS |
148 | /* Same issues as for NeXT apply to the HURD-based GNU system. */ |
149 | # ifdef __GNU__ | |
150 | # undef BSD | |
151 | # undef FSCALE | |
152 | # endif /* __GNU__ */ | |
153 | ||
1e5ba5b5 RM |
154 | /* Set values that are different from the defaults, which are |
155 | set a little farther down with #ifndef. */ | |
156 | ||
157 | ||
158 | /* Some shorthands. */ | |
159 | ||
3da4f367 JM |
160 | # if defined (HPUX) && !defined (hpux) |
161 | # define hpux | |
162 | # endif | |
1e5ba5b5 | 163 | |
3da4f367 JM |
164 | # if defined (__hpux) && !defined (hpux) |
165 | # define hpux | |
166 | # endif | |
73a46a9c | 167 | |
3da4f367 JM |
168 | # if defined (__sun) && !defined (sun) |
169 | # define sun | |
170 | # endif | |
73a46a9c | 171 | |
3da4f367 JM |
172 | # if defined(hp300) && !defined(hpux) |
173 | # define MORE_BSD | |
174 | # endif | |
1e5ba5b5 | 175 | |
3da4f367 JM |
176 | # if defined(ultrix) && defined(mips) |
177 | # define decstation | |
178 | # endif | |
1e5ba5b5 | 179 | |
3da4f367 JM |
180 | # if defined (__SVR4) && !defined (SVR4) |
181 | # define SVR4 | |
182 | # endif | |
1e5ba5b5 | 183 | |
3da4f367 JM |
184 | # if (defined(sun) && defined(SVR4)) || defined (SOLARIS2) |
185 | # define SUNOS_5 | |
186 | # endif | |
1e5ba5b5 | 187 | |
3da4f367 JM |
188 | # if defined (__osf__) && (defined (__alpha) || defined (__alpha__)) |
189 | # define OSF_ALPHA | |
e3cbb35e RS |
190 | # include <sys/mbuf.h> |
191 | # include <sys/socket.h> | |
192 | # include <net/route.h> | |
3da4f367 JM |
193 | # include <sys/table.h> |
194 | # endif | |
195 | ||
196 | # if defined (__osf__) && (defined (mips) || defined (__mips__)) | |
197 | # define OSF_MIPS | |
198 | # include <sys/table.h> | |
199 | # endif | |
1e5ba5b5 RM |
200 | |
201 | /* UTek's /bin/cc on the 4300 has no architecture specific cpp define by | |
202 | default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine | |
203 | that with a couple of other things and we'll have a unique match. */ | |
3da4f367 JM |
204 | # if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES) |
205 | # define tek4300 /* Define by emacs, but not by other users. */ | |
206 | # endif | |
1e5ba5b5 RM |
207 | |
208 | ||
8eda6c51 | 209 | /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */ |
3da4f367 | 210 | # ifndef LOAD_AVE_TYPE |
5ac622b2 | 211 | |
3da4f367 JM |
212 | # ifdef MORE_BSD |
213 | # define LOAD_AVE_TYPE long | |
214 | # endif | |
8eda6c51 | 215 | |
3da4f367 JM |
216 | # ifdef sun |
217 | # define LOAD_AVE_TYPE long | |
218 | # endif | |
8eda6c51 | 219 | |
3da4f367 JM |
220 | # ifdef decstation |
221 | # define LOAD_AVE_TYPE long | |
222 | # endif | |
8eda6c51 | 223 | |
3da4f367 JM |
224 | # ifdef _SEQUENT_ |
225 | # define LOAD_AVE_TYPE long | |
226 | # endif | |
8eda6c51 | 227 | |
3da4f367 JM |
228 | # ifdef sgi |
229 | # define LOAD_AVE_TYPE long | |
230 | # endif | |
8eda6c51 | 231 | |
3da4f367 JM |
232 | # ifdef SVR4 |
233 | # define LOAD_AVE_TYPE long | |
234 | # endif | |
8eda6c51 | 235 | |
3da4f367 JM |
236 | # ifdef sony_news |
237 | # define LOAD_AVE_TYPE long | |
238 | # endif | |
8eda6c51 | 239 | |
3da4f367 JM |
240 | # ifdef sequent |
241 | # define LOAD_AVE_TYPE long | |
242 | # endif | |
8eda6c51 | 243 | |
3da4f367 JM |
244 | # ifdef OSF_ALPHA |
245 | # define LOAD_AVE_TYPE long | |
246 | # endif | |
8eda6c51 | 247 | |
3da4f367 JM |
248 | # if defined (ardent) && defined (titan) |
249 | # define LOAD_AVE_TYPE long | |
250 | # endif | |
8eda6c51 | 251 | |
3da4f367 JM |
252 | # ifdef tek4300 |
253 | # define LOAD_AVE_TYPE long | |
254 | # endif | |
1e5ba5b5 | 255 | |
3da4f367 JM |
256 | # if defined(alliant) && defined(i860) /* Alliant FX/2800 */ |
257 | # define LOAD_AVE_TYPE long | |
258 | # endif | |
59c0e567 | 259 | |
3da4f367 JM |
260 | # ifdef _AIX |
261 | # define LOAD_AVE_TYPE long | |
262 | # endif | |
bc77c95c | 263 | |
3da4f367 JM |
264 | # ifdef convex |
265 | # define LOAD_AVE_TYPE double | |
266 | # ifndef LDAV_CVT | |
267 | # define LDAV_CVT(n) (n) | |
268 | # endif | |
269 | # endif | |
91bf5fad | 270 | |
3da4f367 | 271 | # endif /* No LOAD_AVE_TYPE. */ |
1e5ba5b5 | 272 | |
3da4f367 | 273 | # ifdef OSF_ALPHA |
f870f3fe RM |
274 | /* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1, |
275 | according to ghazi@noc.rutgers.edu. */ | |
3da4f367 JM |
276 | # undef FSCALE |
277 | # define FSCALE 1024.0 | |
278 | # endif | |
f870f3fe | 279 | |
3da4f367 | 280 | # if defined(alliant) && defined(i860) /* Alliant FX/2800 */ |
bf074c06 RM |
281 | /* <sys/param.h> defines an incorrect value for FSCALE on an |
282 | Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */ | |
3da4f367 JM |
283 | # undef FSCALE |
284 | # define FSCALE 100.0 | |
285 | # endif | |
bf074c06 | 286 | |
f870f3fe | 287 | |
3da4f367 | 288 | # ifndef FSCALE |
1e5ba5b5 RM |
289 | |
290 | /* SunOS and some others define FSCALE in sys/param.h. */ | |
291 | ||
3da4f367 JM |
292 | # ifdef MORE_BSD |
293 | # define FSCALE 2048.0 | |
294 | # endif | |
1e5ba5b5 | 295 | |
3da4f367 JM |
296 | # if defined(MIPS) || defined(SVR4) || defined(decstation) |
297 | # define FSCALE 256 | |
298 | # endif | |
1e5ba5b5 | 299 | |
3da4f367 | 300 | # if defined (sgi) || defined (sequent) |
934d56b7 RM |
301 | /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined |
302 | above under #ifdef MIPS. But we want the sgi value. */ | |
3da4f367 | 303 | # undef FSCALE |
87c35974 | 304 | # define FSCALE 1000.0 |
3da4f367 | 305 | # endif |
1e5ba5b5 | 306 | |
3da4f367 JM |
307 | # if defined (ardent) && defined (titan) |
308 | # define FSCALE 65536.0 | |
309 | # endif | |
1e5ba5b5 | 310 | |
3da4f367 JM |
311 | # ifdef tek4300 |
312 | # define FSCALE 100.0 | |
313 | # endif | |
59c0e567 | 314 | |
3da4f367 JM |
315 | # ifdef _AIX |
316 | # define FSCALE 65536.0 | |
317 | # endif | |
bc77c95c | 318 | |
3da4f367 | 319 | # endif /* Not FSCALE. */ |
1e5ba5b5 | 320 | |
3da4f367 | 321 | # if !defined (LDAV_CVT) && defined (FSCALE) |
87c35974 | 322 | # define LDAV_CVT(n) (((double) (n)) / FSCALE) |
3da4f367 | 323 | # endif |
1e5ba5b5 | 324 | |
87c35974 DL |
325 | # ifndef NLIST_STRUCT |
326 | # if HAVE_NLIST_H | |
327 | # define NLIST_STRUCT | |
328 | # endif | |
329 | # endif | |
1e5ba5b5 | 330 | |
3da4f367 JM |
331 | # if defined(sgi) || (defined(mips) && !defined(BSD)) |
332 | # define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31)) | |
333 | # endif | |
1e5ba5b5 RM |
334 | |
335 | ||
3da4f367 JM |
336 | # if !defined (KERNEL_FILE) && defined (sequent) |
337 | # define KERNEL_FILE "/dynix" | |
338 | # endif | |
1e5ba5b5 | 339 | |
3da4f367 JM |
340 | # if !defined (KERNEL_FILE) && defined (hpux) |
341 | # define KERNEL_FILE "/hp-ux" | |
342 | # endif | |
1e5ba5b5 | 343 | |
3da4f367 JM |
344 | # if !defined(KERNEL_FILE) && (defined(_SEQUENT_) || defined(MIPS) || defined(SVR4) || defined(ISC) || defined (sgi) || (defined (ardent) && defined (titan))) |
345 | # define KERNEL_FILE "/unix" | |
346 | # endif | |
1e5ba5b5 RM |
347 | |
348 | ||
3da4f367 JM |
349 | # if !defined (LDAV_SYMBOL) && defined (alliant) |
350 | # define LDAV_SYMBOL "_Loadavg" | |
351 | # endif | |
1e5ba5b5 | 352 | |
3da4f367 JM |
353 | # if !defined(LDAV_SYMBOL) && ((defined(hpux) && !defined(hp9000s300)) || defined(_SEQUENT_) || defined(SVR4) || defined(ISC) || defined(sgi) || (defined (ardent) && defined (titan)) || defined (_AIX)) |
354 | # define LDAV_SYMBOL "avenrun" | |
355 | # endif | |
1e5ba5b5 | 356 | |
3da4f367 JM |
357 | # ifdef HAVE_UNISTD_H |
358 | # include <unistd.h> | |
359 | # endif | |
1e5ba5b5 | 360 | |
3da4f367 | 361 | # include <stdio.h> |
1e5ba5b5 RM |
362 | |
363 | /* LOAD_AVE_TYPE should only get defined if we're going to use the | |
364 | nlist method. */ | |
3da4f367 JM |
365 | # if !defined(LOAD_AVE_TYPE) && (defined(BSD) || defined(LDAV_CVT) || defined(KERNEL_FILE) || defined(LDAV_SYMBOL)) |
366 | # define LOAD_AVE_TYPE double | |
367 | # endif | |
368 | ||
369 | # ifdef LOAD_AVE_TYPE | |
370 | ||
371 | # ifndef VMS | |
372 | # ifndef __linux__ | |
373 | # ifndef NLIST_STRUCT | |
374 | # include <a.out.h> | |
375 | # else /* NLIST_STRUCT */ | |
376 | # include <nlist.h> | |
377 | # endif /* NLIST_STRUCT */ | |
378 | ||
379 | # ifdef SUNOS_5 | |
380 | # include <fcntl.h> | |
381 | # include <kvm.h> | |
382 | # include <kstat.h> | |
383 | # endif | |
384 | ||
385 | # if defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC) | |
386 | # include <sys/pstat.h> | |
387 | # endif | |
388 | ||
389 | # ifndef KERNEL_FILE | |
390 | # define KERNEL_FILE "/vmunix" | |
391 | # endif /* KERNEL_FILE */ | |
392 | ||
393 | # ifndef LDAV_SYMBOL | |
394 | # define LDAV_SYMBOL "_avenrun" | |
395 | # endif /* LDAV_SYMBOL */ | |
396 | # endif /* __linux__ */ | |
397 | ||
398 | # else /* VMS */ | |
399 | ||
400 | # ifndef eunice | |
401 | # include <iodef.h> | |
402 | # include <descrip.h> | |
403 | # else /* eunice */ | |
404 | # include <vms/iodef.h> | |
405 | # endif /* eunice */ | |
406 | # endif /* VMS */ | |
407 | ||
408 | # ifndef LDAV_CVT | |
409 | # define LDAV_CVT(n) ((double) (n)) | |
410 | # endif /* !LDAV_CVT */ | |
411 | ||
412 | # endif /* LOAD_AVE_TYPE */ | |
413 | ||
d282be16 RS |
414 | # if defined(__GNU__) && !defined (NeXT) |
415 | /* Note that NeXT Openstep defines __GNU__ even though it should not. */ | |
416 | /* GNU system acts much like NeXT, for load average purposes, | |
417 | but not exactly. */ | |
2c30b2fc MB |
418 | # define NeXT |
419 | # define host_self mach_host_self | |
420 | # endif | |
421 | ||
3da4f367 JM |
422 | # ifdef NeXT |
423 | # ifdef HAVE_MACH_MACH_H | |
424 | # include <mach/mach.h> | |
425 | # else | |
426 | # include <mach.h> | |
427 | # endif | |
428 | # endif /* NeXT */ | |
429 | ||
430 | # ifdef sgi | |
431 | # include <sys/sysmp.h> | |
432 | # endif /* sgi */ | |
433 | ||
434 | # ifdef UMAX | |
435 | # include <stdio.h> | |
436 | # include <signal.h> | |
437 | # include <sys/time.h> | |
438 | # include <sys/wait.h> | |
439 | # include <sys/syscall.h> | |
440 | ||
441 | # ifdef UMAX_43 | |
442 | # include <machine/cpu.h> | |
443 | # include <inq_stats/statistics.h> | |
444 | # include <inq_stats/sysstats.h> | |
445 | # include <inq_stats/cpustats.h> | |
446 | # include <inq_stats/procstats.h> | |
447 | # else /* Not UMAX_43. */ | |
448 | # include <sys/sysdefs.h> | |
449 | # include <sys/statistics.h> | |
450 | # include <sys/sysstats.h> | |
451 | # include <sys/cpudefs.h> | |
452 | # include <sys/cpustats.h> | |
453 | # include <sys/procstats.h> | |
454 | # endif /* Not UMAX_43. */ | |
455 | # endif /* UMAX */ | |
456 | ||
457 | # ifdef DGUX | |
458 | # include <sys/dg_sys_info.h> | |
459 | # endif | |
460 | ||
461 | # if defined(HAVE_FCNTL_H) || defined(_POSIX_VERSION) | |
462 | # include <fcntl.h> | |
463 | # else | |
464 | # include <sys/file.h> | |
465 | # endif | |
1e5ba5b5 RM |
466 | \f |
467 | /* Avoid static vars inside a function since in HPUX they dump as pure. */ | |
468 | ||
3da4f367 | 469 | # ifdef NeXT |
1e5ba5b5 RM |
470 | static processor_set_t default_set; |
471 | static int getloadavg_initialized; | |
3da4f367 | 472 | # endif /* NeXT */ |
1e5ba5b5 | 473 | |
3da4f367 | 474 | # ifdef UMAX |
1e5ba5b5 RM |
475 | static unsigned int cpus = 0; |
476 | static unsigned int samples; | |
3da4f367 | 477 | # endif /* UMAX */ |
1e5ba5b5 | 478 | |
3da4f367 | 479 | # ifdef DGUX |
1e5ba5b5 | 480 | static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */ |
3da4f367 | 481 | # endif /* DGUX */ |
1e5ba5b5 | 482 | |
102f4b17 | 483 | #if !defined(HAVE_LIBKSTAT) && defined(LOAD_AVE_TYPE) |
1e5ba5b5 RM |
484 | /* File descriptor open to /dev/kmem or VMS load ave driver. */ |
485 | static int channel; | |
486 | /* Nonzero iff channel is valid. */ | |
487 | static int getloadavg_initialized; | |
488 | /* Offset in kmem to seek to read load average, or 0 means invalid. */ | |
489 | static long offset; | |
490 | ||
87c35974 | 491 | # if !defined(VMS) && !defined(sgi) && !defined(__linux__) |
1e5ba5b5 | 492 | static struct nlist nl[2]; |
87c35974 | 493 | # endif /* Not VMS or sgi */ |
1e5ba5b5 | 494 | |
87c35974 | 495 | # ifdef SUNOS_5 |
1e5ba5b5 | 496 | static kvm_t *kd; |
87c35974 | 497 | # endif /* SUNOS_5 */ |
1e5ba5b5 | 498 | |
432eec29 | 499 | #endif /* LOAD_AVE_TYPE && !HAVE_LIBKSTAT */ |
1e5ba5b5 RM |
500 | \f |
501 | /* Put the 1 minute, 5 minute and 15 minute load averages | |
502 | into the first NELEM elements of LOADAVG. | |
039e9c8b | 503 | Return the number written (never more than 3, but may be less than NELEM), |
1e5ba5b5 RM |
504 | or -1 if an error occurred. */ |
505 | ||
506 | int | |
507 | getloadavg (loadavg, nelem) | |
508 | double loadavg[]; | |
509 | int nelem; | |
510 | { | |
511 | int elem = 0; /* Return value. */ | |
512 | ||
3da4f367 JM |
513 | # ifdef NO_GET_LOAD_AVG |
514 | # define LDAV_DONE | |
7ee260fe RM |
515 | /* Set errno to zero to indicate that there was no particular error; |
516 | this function just can't work at all on this system. */ | |
517 | errno = 0; | |
518 | elem = -1; | |
3da4f367 | 519 | # endif |
7ee260fe | 520 | |
6b2e9efd | 521 | # if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT) |
4e98d4fa | 522 | /* Use libkstat because we don't have to be root. */ |
3da4f367 | 523 | # define LDAV_DONE |
4e98d4fa RS |
524 | kstat_ctl_t *kc; |
525 | kstat_t *ksp; | |
526 | kstat_named_t *kn; | |
527 | ||
528 | kc = kstat_open (); | |
3da4f367 JM |
529 | if (kc == 0) |
530 | return -1; | |
4e98d4fa | 531 | ksp = kstat_lookup (kc, "unix", 0, "system_misc"); |
3da4f367 JM |
532 | if (ksp == 0 ) |
533 | return -1; | |
534 | if (kstat_read (kc, ksp, 0) == -1) | |
535 | return -1; | |
73a46a9c | 536 | |
4e98d4fa RS |
537 | |
538 | kn = kstat_data_lookup (ksp, "avenrun_1min"); | |
539 | if (kn == 0) | |
540 | { | |
541 | /* Return -1 if no load average information is available. */ | |
542 | nelem = 0; | |
543 | elem = -1; | |
544 | } | |
545 | ||
546 | if (nelem >= 1) | |
547 | loadavg[elem++] = (double) kn->value.ul/FSCALE; | |
548 | ||
549 | if (nelem >= 2) | |
550 | { | |
551 | kn = kstat_data_lookup (ksp, "avenrun_5min"); | |
552 | if (kn != 0) | |
553 | { | |
554 | loadavg[elem++] = (double) kn->value.ul/FSCALE; | |
555 | ||
556 | if (nelem >= 3) | |
557 | { | |
558 | kn = kstat_data_lookup (ksp, "avenrun_15min"); | |
559 | if (kn != 0) | |
560 | loadavg[elem++] = (double) kn->value.ul/FSCALE; | |
561 | } | |
562 | } | |
563 | } | |
564 | ||
565 | kstat_close (kc); | |
6b2e9efd | 566 | # endif /* HAVE_LIBKSTAT */ |
4e98d4fa | 567 | |
3da4f367 JM |
568 | # if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC) |
569 | /* Use pstat_getdynamic() because we don't have to be root. */ | |
570 | # define LDAV_DONE | |
571 | # undef LOAD_AVE_TYPE | |
1e5ba5b5 | 572 | |
3da4f367 JM |
573 | struct pst_dynamic dyn_info; |
574 | if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0) | |
575 | return -1; | |
576 | if (nelem > 0) | |
577 | loadavg[elem++] = dyn_info.psd_avg_1_min; | |
578 | if (nelem > 1) | |
579 | loadavg[elem++] = dyn_info.psd_avg_5_min; | |
580 | if (nelem > 2) | |
581 | loadavg[elem++] = dyn_info.psd_avg_15_min; | |
582 | ||
583 | # endif /* hpux && HAVE_PSTAT_GETDYNAMIC */ | |
584 | ||
585 | # if !defined (LDAV_DONE) && defined (__linux__) | |
586 | # define LDAV_DONE | |
587 | # undef LOAD_AVE_TYPE | |
588 | ||
589 | # ifndef LINUX_LDAV_FILE | |
590 | # define LINUX_LDAV_FILE "/proc/loadavg" | |
591 | # endif | |
1e5ba5b5 RM |
592 | |
593 | char ldavgbuf[40]; | |
594 | double load_ave[3]; | |
595 | int fd, count; | |
596 | ||
597 | fd = open (LINUX_LDAV_FILE, O_RDONLY); | |
598 | if (fd == -1) | |
599 | return -1; | |
600 | count = read (fd, ldavgbuf, 40); | |
601 | (void) close (fd); | |
602 | if (count <= 0) | |
603 | return -1; | |
604 | ||
87c35974 DL |
605 | /* The following sscanf must use the C locale. */ |
606 | setlocale (LC_NUMERIC, "C"); | |
1e5ba5b5 RM |
607 | count = sscanf (ldavgbuf, "%lf %lf %lf", |
608 | &load_ave[0], &load_ave[1], &load_ave[2]); | |
87c35974 | 609 | setlocale (LC_NUMERIC, ""); |
1e5ba5b5 RM |
610 | if (count < 1) |
611 | return -1; | |
612 | ||
613 | for (elem = 0; elem < nelem && elem < count; elem++) | |
614 | loadavg[elem] = load_ave[elem]; | |
615 | ||
616 | return elem; | |
617 | ||
3da4f367 | 618 | # endif /* __linux__ */ |
1e5ba5b5 | 619 | |
3da4f367 JM |
620 | # if !defined (LDAV_DONE) && defined (__NetBSD__) |
621 | # define LDAV_DONE | |
622 | # undef LOAD_AVE_TYPE | |
9eb8034b | 623 | |
3da4f367 JM |
624 | # ifndef NETBSD_LDAV_FILE |
625 | # define NETBSD_LDAV_FILE "/kern/loadavg" | |
626 | # endif | |
9eb8034b RM |
627 | |
628 | unsigned long int load_ave[3], scale; | |
629 | int count; | |
630 | FILE *fp; | |
631 | ||
8f090e85 | 632 | fp = fopen (NETBSD_LDAV_FILE, "r"); |
9eb8034b RM |
633 | if (fp == NULL) |
634 | return -1; | |
635 | count = fscanf (fp, "%lu %lu %lu %lu\n", | |
636 | &load_ave[0], &load_ave[1], &load_ave[2], | |
637 | &scale); | |
638 | (void) fclose (fp); | |
639 | if (count != 4) | |
640 | return -1; | |
641 | ||
642 | for (elem = 0; elem < nelem; elem++) | |
643 | loadavg[elem] = (double) load_ave[elem] / (double) scale; | |
644 | ||
645 | return elem; | |
646 | ||
3da4f367 | 647 | # endif /* __NetBSD__ */ |
9eb8034b | 648 | |
3da4f367 JM |
649 | # if !defined (LDAV_DONE) && defined (NeXT) |
650 | # define LDAV_DONE | |
1e5ba5b5 RM |
651 | /* The NeXT code was adapted from iscreen 3.2. */ |
652 | ||
653 | host_t host; | |
654 | struct processor_set_basic_info info; | |
655 | unsigned info_count; | |
656 | ||
039e9c8b DM |
657 | /* We only know how to get the 1-minute average for this system, |
658 | so even if the caller asks for more than 1, we only return 1. */ | |
1e5ba5b5 RM |
659 | |
660 | if (!getloadavg_initialized) | |
661 | { | |
662 | if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS) | |
663 | getloadavg_initialized = 1; | |
664 | } | |
665 | ||
666 | if (getloadavg_initialized) | |
667 | { | |
668 | info_count = PROCESSOR_SET_BASIC_INFO_COUNT; | |
669 | if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host, | |
3da4f367 | 670 | (processor_set_info_t) &info, &info_count) |
1e5ba5b5 RM |
671 | != KERN_SUCCESS) |
672 | getloadavg_initialized = 0; | |
673 | else | |
674 | { | |
675 | if (nelem > 0) | |
676 | loadavg[elem++] = (double) info.load_average / LOAD_SCALE; | |
677 | } | |
678 | } | |
679 | ||
680 | if (!getloadavg_initialized) | |
681 | return -1; | |
3da4f367 | 682 | # endif /* NeXT */ |
1e5ba5b5 | 683 | |
3da4f367 JM |
684 | # if !defined (LDAV_DONE) && defined (UMAX) |
685 | # define LDAV_DONE | |
1e5ba5b5 RM |
686 | /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not |
687 | have a /dev/kmem. Information about the workings of the running kernel | |
688 | can be gathered with inq_stats system calls. | |
689 | We only know how to get the 1-minute average for this system. */ | |
690 | ||
691 | struct proc_summary proc_sum_data; | |
692 | struct stat_descr proc_info; | |
693 | double load; | |
694 | register unsigned int i, j; | |
695 | ||
696 | if (cpus == 0) | |
697 | { | |
698 | register unsigned int c, i; | |
699 | struct cpu_config conf; | |
700 | struct stat_descr desc; | |
701 | ||
702 | desc.sd_next = 0; | |
703 | desc.sd_subsys = SUBSYS_CPU; | |
704 | desc.sd_type = CPUTYPE_CONFIG; | |
705 | desc.sd_addr = (char *) &conf; | |
706 | desc.sd_size = sizeof conf; | |
707 | ||
708 | if (inq_stats (1, &desc)) | |
709 | return -1; | |
710 | ||
711 | c = 0; | |
712 | for (i = 0; i < conf.config_maxclass; ++i) | |
713 | { | |
714 | struct class_stats stats; | |
715 | bzero ((char *) &stats, sizeof stats); | |
716 | ||
717 | desc.sd_type = CPUTYPE_CLASS; | |
718 | desc.sd_objid = i; | |
719 | desc.sd_addr = (char *) &stats; | |
720 | desc.sd_size = sizeof stats; | |
721 | ||
722 | if (inq_stats (1, &desc)) | |
723 | return -1; | |
724 | ||
725 | c += stats.class_numcpus; | |
726 | } | |
727 | cpus = c; | |
728 | samples = cpus < 2 ? 3 : (2 * cpus / 3); | |
729 | } | |
730 | ||
731 | proc_info.sd_next = 0; | |
732 | proc_info.sd_subsys = SUBSYS_PROC; | |
733 | proc_info.sd_type = PROCTYPE_SUMMARY; | |
734 | proc_info.sd_addr = (char *) &proc_sum_data; | |
735 | proc_info.sd_size = sizeof (struct proc_summary); | |
736 | proc_info.sd_sizeused = 0; | |
737 | ||
738 | if (inq_stats (1, &proc_info) != 0) | |
739 | return -1; | |
740 | ||
741 | load = proc_sum_data.ps_nrunnable; | |
742 | j = 0; | |
743 | for (i = samples - 1; i > 0; --i) | |
744 | { | |
745 | load += proc_sum_data.ps_nrun[j]; | |
746 | if (j++ == PS_NRUNSIZE) | |
747 | j = 0; | |
748 | } | |
749 | ||
750 | if (nelem > 0) | |
751 | loadavg[elem++] = load / samples / cpus; | |
3da4f367 | 752 | # endif /* UMAX */ |
1e5ba5b5 | 753 | |
3da4f367 JM |
754 | # if !defined (LDAV_DONE) && defined (DGUX) |
755 | # define LDAV_DONE | |
1e5ba5b5 RM |
756 | /* This call can return -1 for an error, but with good args |
757 | it's not supposed to fail. The first argument is for no | |
758 | apparent reason of type `long int *'. */ | |
759 | dg_sys_info ((long int *) &load_info, | |
760 | DG_SYS_INFO_LOAD_INFO_TYPE, | |
761 | DG_SYS_INFO_LOAD_VERSION_0); | |
762 | ||
763 | if (nelem > 0) | |
764 | loadavg[elem++] = load_info.one_minute; | |
765 | if (nelem > 1) | |
766 | loadavg[elem++] = load_info.five_minute; | |
767 | if (nelem > 2) | |
768 | loadavg[elem++] = load_info.fifteen_minute; | |
3da4f367 | 769 | # endif /* DGUX */ |
1e5ba5b5 | 770 | |
3da4f367 JM |
771 | # if !defined (LDAV_DONE) && defined (apollo) |
772 | # define LDAV_DONE | |
1e5ba5b5 RM |
773 | /* Apollo code from lisch@mentorg.com (Ray Lischner). |
774 | ||
775 | This system call is not documented. The load average is obtained as | |
776 | three long integers, for the load average over the past minute, | |
777 | five minutes, and fifteen minutes. Each value is a scaled integer, | |
778 | with 16 bits of integer part and 16 bits of fraction part. | |
779 | ||
780 | I'm not sure which operating system first supported this system call, | |
781 | but I know that SR10.2 supports it. */ | |
782 | ||
783 | extern void proc1_$get_loadav (); | |
784 | unsigned long load_ave[3]; | |
785 | ||
786 | proc1_$get_loadav (load_ave); | |
787 | ||
788 | if (nelem > 0) | |
789 | loadavg[elem++] = load_ave[0] / 65536.0; | |
790 | if (nelem > 1) | |
791 | loadavg[elem++] = load_ave[1] / 65536.0; | |
792 | if (nelem > 2) | |
793 | loadavg[elem++] = load_ave[2] / 65536.0; | |
3da4f367 | 794 | # endif /* apollo */ |
1e5ba5b5 | 795 | |
3da4f367 JM |
796 | # if !defined (LDAV_DONE) && defined (OSF_MIPS) |
797 | # define LDAV_DONE | |
1e5ba5b5 RM |
798 | |
799 | struct tbl_loadavg load_ave; | |
800 | table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave)); | |
7ee260fe RM |
801 | loadavg[elem++] |
802 | = (load_ave.tl_lscale == 0 | |
803 | ? load_ave.tl_avenrun.d[0] | |
804 | : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale)); | |
3da4f367 | 805 | # endif /* OSF_MIPS */ |
1e5ba5b5 | 806 | |
383ebe49 | 807 | # if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32)) |
3da4f367 | 808 | # define LDAV_DONE |
a7ee71e8 RS |
809 | |
810 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
26ff97e7 | 811 | for ( ; elem < nelem; elem++) |
a7ee71e8 RS |
812 | { |
813 | loadavg[elem] = 0.0; | |
814 | } | |
383ebe49 | 815 | # endif /* __MSDOS__ || WINDOWS32 */ |
a7ee71e8 | 816 | |
3da4f367 JM |
817 | # if !defined (LDAV_DONE) && defined (OSF_ALPHA) |
818 | # define LDAV_DONE | |
bbd619d7 RS |
819 | |
820 | struct tbl_loadavg load_ave; | |
821 | table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave)); | |
822 | for (elem = 0; elem < nelem; elem++) | |
823 | loadavg[elem] | |
824 | = (load_ave.tl_lscale == 0 | |
825 | ? load_ave.tl_avenrun.d[elem] | |
826 | : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale)); | |
3da4f367 | 827 | # endif /* OSF_ALPHA */ |
bbd619d7 | 828 | |
3da4f367 | 829 | # if !defined (LDAV_DONE) && defined (VMS) |
1e5ba5b5 RM |
830 | /* VMS specific code -- read from the Load Ave driver. */ |
831 | ||
832 | LOAD_AVE_TYPE load_ave[3]; | |
833 | static int getloadavg_initialized = 0; | |
3da4f367 | 834 | # ifdef eunice |
1e5ba5b5 RM |
835 | struct |
836 | { | |
837 | int dsc$w_length; | |
838 | char *dsc$a_pointer; | |
839 | } descriptor; | |
3da4f367 | 840 | # endif |
1e5ba5b5 RM |
841 | |
842 | /* Ensure that there is a channel open to the load ave device. */ | |
843 | if (!getloadavg_initialized) | |
844 | { | |
845 | /* Attempt to open the channel. */ | |
3da4f367 | 846 | # ifdef eunice |
1e5ba5b5 RM |
847 | descriptor.dsc$w_length = 18; |
848 | descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE"; | |
3da4f367 | 849 | # else |
1e5ba5b5 | 850 | $DESCRIPTOR (descriptor, "LAV0:"); |
3da4f367 | 851 | # endif |
1e5ba5b5 RM |
852 | if (sys$assign (&descriptor, &channel, 0, 0) & 1) |
853 | getloadavg_initialized = 1; | |
854 | } | |
855 | ||
856 | /* Read the load average vector. */ | |
857 | if (getloadavg_initialized | |
858 | && !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0, | |
859 | load_ave, 12, 0, 0, 0, 0) & 1)) | |
860 | { | |
861 | sys$dassgn (channel); | |
862 | getloadavg_initialized = 0; | |
863 | } | |
864 | ||
865 | if (!getloadavg_initialized) | |
866 | return -1; | |
3da4f367 | 867 | # endif /* VMS */ |
1e5ba5b5 | 868 | |
3da4f367 | 869 | # if !defined (LDAV_DONE) && defined(LOAD_AVE_TYPE) && !defined(VMS) |
1e5ba5b5 RM |
870 | |
871 | /* UNIX-specific code -- read the average from /dev/kmem. */ | |
872 | ||
3da4f367 | 873 | # define LDAV_PRIVILEGED /* This code requires special installation. */ |
1e5ba5b5 RM |
874 | |
875 | LOAD_AVE_TYPE load_ave[3]; | |
876 | ||
877 | /* Get the address of LDAV_SYMBOL. */ | |
878 | if (offset == 0) | |
879 | { | |
3da4f367 JM |
880 | # ifndef sgi |
881 | # ifndef NLIST_STRUCT | |
1e5ba5b5 RM |
882 | strcpy (nl[0].n_name, LDAV_SYMBOL); |
883 | strcpy (nl[1].n_name, ""); | |
3da4f367 | 884 | # else /* NLIST_STRUCT */ |
87c35974 | 885 | # ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME |
1e5ba5b5 RM |
886 | nl[0].n_un.n_name = LDAV_SYMBOL; |
887 | nl[1].n_un.n_name = 0; | |
87c35974 | 888 | # else /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */ |
1e5ba5b5 RM |
889 | nl[0].n_name = LDAV_SYMBOL; |
890 | nl[1].n_name = 0; | |
87c35974 | 891 | # endif /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */ |
3da4f367 | 892 | # endif /* NLIST_STRUCT */ |
1e5ba5b5 | 893 | |
3da4f367 | 894 | # ifndef SUNOS_5 |
bc77c95c | 895 | if ( |
3da4f367 | 896 | # if !(defined (_AIX) && !defined (ps2)) |
bc77c95c | 897 | nlist (KERNEL_FILE, nl) |
3da4f367 | 898 | # else /* _AIX */ |
bc77c95c | 899 | knlist (nl, 1, sizeof (nl[0])) |
3da4f367 | 900 | # endif |
bc77c95c RM |
901 | >= 0) |
902 | /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */ | |
903 | { | |
3da4f367 | 904 | # ifdef FIXUP_KERNEL_SYMBOL_ADDR |
bc77c95c | 905 | FIXUP_KERNEL_SYMBOL_ADDR (nl); |
3da4f367 | 906 | # endif |
bc77c95c RM |
907 | offset = nl[0].n_value; |
908 | } | |
3da4f367 JM |
909 | # endif /* !SUNOS_5 */ |
910 | # else /* sgi */ | |
911 | int ldav_off; | |
912 | ||
913 | ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN); | |
914 | if (ldav_off != -1) | |
915 | offset = (long) ldav_off & 0x7fffffff; | |
916 | # endif /* sgi */ | |
917 | } | |
1e5ba5b5 RM |
918 | |
919 | /* Make sure we have /dev/kmem open. */ | |
920 | if (!getloadavg_initialized) | |
921 | { | |
3da4f367 | 922 | # ifndef SUNOS_5 |
1e5ba5b5 RM |
923 | channel = open ("/dev/kmem", 0); |
924 | if (channel >= 0) | |
00f7bd72 RM |
925 | { |
926 | /* Set the channel to close on exec, so it does not | |
927 | litter any child's descriptor table. */ | |
071b0719 | 928 | # ifdef F_SETFD |
3da4f367 JM |
929 | # ifndef FD_CLOEXEC |
930 | # define FD_CLOEXEC 1 | |
931 | # endif | |
00f7bd72 | 932 | (void) fcntl (channel, F_SETFD, FD_CLOEXEC); |
3da4f367 | 933 | # endif |
00f7bd72 RM |
934 | getloadavg_initialized = 1; |
935 | } | |
3da4f367 | 936 | # else /* SUNOS_5 */ |
fb3ebe6c DM |
937 | /* We pass 0 for the kernel, corefile, and swapfile names |
938 | to use the currently running kernel. */ | |
1e5ba5b5 | 939 | kd = kvm_open (0, 0, 0, O_RDONLY, 0); |
26ff97e7 | 940 | if (kd != 0) |
1e5ba5b5 | 941 | { |
fb3ebe6c | 942 | /* nlist the currently running kernel. */ |
1e5ba5b5 | 943 | kvm_nlist (kd, nl); |
fb3ebe6c | 944 | offset = nl[0].n_value; |
1e5ba5b5 RM |
945 | getloadavg_initialized = 1; |
946 | } | |
3da4f367 | 947 | # endif /* SUNOS_5 */ |
1e5ba5b5 RM |
948 | } |
949 | ||
950 | /* If we can, get the load average values. */ | |
951 | if (offset && getloadavg_initialized) | |
952 | { | |
953 | /* Try to read the load. */ | |
3da4f367 | 954 | # ifndef SUNOS_5 |
1e5ba5b5 RM |
955 | if (lseek (channel, offset, 0) == -1L |
956 | || read (channel, (char *) load_ave, sizeof (load_ave)) | |
957 | != sizeof (load_ave)) | |
958 | { | |
959 | close (channel); | |
960 | getloadavg_initialized = 0; | |
961 | } | |
3da4f367 | 962 | # else /* SUNOS_5 */ |
1e5ba5b5 RM |
963 | if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave)) |
964 | != sizeof (load_ave)) | |
965 | { | |
966 | kvm_close (kd); | |
967 | getloadavg_initialized = 0; | |
968 | } | |
3da4f367 | 969 | # endif /* SUNOS_5 */ |
1e5ba5b5 RM |
970 | } |
971 | ||
972 | if (offset == 0 || !getloadavg_initialized) | |
973 | return -1; | |
3da4f367 | 974 | # endif /* LOAD_AVE_TYPE and not VMS */ |
1e5ba5b5 | 975 | |
3da4f367 | 976 | # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */ |
1e5ba5b5 RM |
977 | if (nelem > 0) |
978 | loadavg[elem++] = LDAV_CVT (load_ave[0]); | |
979 | if (nelem > 1) | |
980 | loadavg[elem++] = LDAV_CVT (load_ave[1]); | |
981 | if (nelem > 2) | |
982 | loadavg[elem++] = LDAV_CVT (load_ave[2]); | |
983 | ||
3da4f367 JM |
984 | # define LDAV_DONE |
985 | # endif /* !LDAV_DONE && LOAD_AVE_TYPE */ | |
1e5ba5b5 | 986 | |
3da4f367 | 987 | # ifdef LDAV_DONE |
1e5ba5b5 | 988 | return elem; |
3da4f367 | 989 | # else |
1e5ba5b5 RM |
990 | /* Set errno to zero to indicate that there was no particular error; |
991 | this function just can't work at all on this system. */ | |
992 | errno = 0; | |
993 | return -1; | |
3da4f367 | 994 | # endif |
1e5ba5b5 | 995 | } |
04402ae3 RM |
996 | |
997 | #endif /* ! HAVE_GETLOADAVG */ | |
1e5ba5b5 RM |
998 | \f |
999 | #ifdef TEST | |
87c35974 | 1000 | void |
1e5ba5b5 RM |
1001 | main (argc, argv) |
1002 | int argc; | |
1003 | char **argv; | |
1004 | { | |
1005 | int naptime = 0; | |
1006 | ||
1007 | if (argc > 1) | |
1008 | naptime = atoi (argv[1]); | |
1009 | ||
1e5ba5b5 RM |
1010 | while (1) |
1011 | { | |
1012 | double avg[3]; | |
1013 | int loads; | |
1014 | ||
1015 | errno = 0; /* Don't be misled if it doesn't set errno. */ | |
1016 | loads = getloadavg (avg, 3); | |
1017 | if (loads == -1) | |
1018 | { | |
1019 | perror ("Error getting load average"); | |
1020 | exit (1); | |
1021 | } | |
1022 | if (loads > 0) | |
1023 | printf ("1-minute: %f ", avg[0]); | |
1024 | if (loads > 1) | |
1025 | printf ("5-minute: %f ", avg[1]); | |
1026 | if (loads > 2) | |
1027 | printf ("15-minute: %f ", avg[2]); | |
1028 | if (loads > 0) | |
1029 | putchar ('\n'); | |
db6730c7 RM |
1030 | |
1031 | if (naptime == 0) | |
1032 | break; | |
1e5ba5b5 RM |
1033 | sleep (naptime); |
1034 | } | |
db6730c7 RM |
1035 | |
1036 | exit (0); | |
1e5ba5b5 RM |
1037 | } |
1038 | #endif /* TEST */ | |
ab5796a9 MB |
1039 | |
1040 | /* arch-tag: 2b37a242-6289-41f4-8cd5-0e73fd615db1 | |
1041 | (do not change this comment) */ |