diff options
Diffstat (limited to 'lib/getloadavg.c')
| -rw-r--r-- | lib/getloadavg.c | 1017 |
1 files changed, 0 insertions, 1017 deletions
diff --git a/lib/getloadavg.c b/lib/getloadavg.c deleted file mode 100644 index 2a501314..00000000 --- a/lib/getloadavg.c +++ /dev/null | |||
| @@ -1,1017 +0,0 @@ | |||
| 1 | /* Get the system load averages. | ||
| 2 | |||
| 3 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994, | ||
| 4 | 1995, 1997, 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc. | ||
| 5 | |||
| 6 | NOTE: The canonical source of this file is maintained with gnulib. | ||
| 7 | Bugs can be reported to bug-gnulib@gnu.org. | ||
| 8 | |||
| 9 | This program is free software; you can redistribute it and/or modify | ||
| 10 | it under the terms of the GNU General Public License as published by | ||
| 11 | the Free Software Foundation; either version 2, or (at your option) | ||
| 12 | any later version. | ||
| 13 | |||
| 14 | This program is distributed in the hope that it will be useful, | ||
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 17 | GNU General Public License for more details. | ||
| 18 | |||
| 19 | You should have received a copy of the GNU General Public License | ||
| 20 | along with this program; if not, write to the Free Software | ||
| 21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | ||
| 22 | USA. */ | ||
| 23 | |||
| 24 | /* Compile-time symbols that this file uses: | ||
| 25 | |||
| 26 | HAVE_PSTAT_GETDYNAMIC Define this if your system has the | ||
| 27 | pstat_getdynamic function. I think it | ||
| 28 | is unique to HPUX9. The best way to get the | ||
| 29 | definition is through the AC_FUNC_GETLOADAVG | ||
| 30 | macro that comes with autoconf 2.13 or newer. | ||
| 31 | If that isn't an option, then just put | ||
| 32 | AC_CHECK_FUNCS(pstat_getdynamic) in your | ||
| 33 | configure.in file. | ||
| 34 | FIXUP_KERNEL_SYMBOL_ADDR() Adjust address in returned struct nlist. | ||
| 35 | KERNEL_FILE Name of the kernel file to nlist. | ||
| 36 | LDAV_CVT() Scale the load average from the kernel. | ||
| 37 | Returns a double. | ||
| 38 | LDAV_SYMBOL Name of kernel symbol giving load average. | ||
| 39 | LOAD_AVE_TYPE Type of the load average array in the kernel. | ||
| 40 | Must be defined unless one of | ||
| 41 | apollo, DGUX, NeXT, or UMAX is defined; | ||
| 42 | or we have libkstat; | ||
| 43 | otherwise, no load average is available. | ||
| 44 | HAVE_NLIST_H nlist.h is available. NLIST_STRUCT defaults | ||
| 45 | to this. | ||
| 46 | NLIST_STRUCT Include nlist.h, not a.out.h, and | ||
| 47 | the nlist n_name element is a pointer, | ||
| 48 | not an array. | ||
| 49 | HAVE_STRUCT_NLIST_N_UN_N_NAME `n_un.n_name' is member of `struct nlist'. | ||
| 50 | LINUX_LDAV_FILE [__linux__, __CYGWIN__]: File containing | ||
| 51 | load averages. | ||
| 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. | ||
| 58 | convex | ||
| 59 | DGUX | ||
| 60 | eunice UNIX emulator under VMS. | ||
| 61 | hpux | ||
| 62 | __MSDOS__ No-op for MSDOS. | ||
| 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 | ||
| 71 | WINDOWS32 No-op for Windows95/NT. | ||
| 72 | __linux__ Linux: assumes /proc file system mounted. | ||
| 73 | Support from Michael K. Johnson. | ||
| 74 | __CYGWIN__ Cygwin emulates linux /proc/loadavg. | ||
| 75 | __NetBSD__ NetBSD: assumes /kern file system mounted. | ||
| 76 | |||
| 77 | In addition, to avoid nesting many #ifdefs, we internally set | ||
| 78 | LDAV_DONE to indicate that the load average has been computed. | ||
| 79 | |||
| 80 | We also #define LDAV_PRIVILEGED if a program will require | ||
| 81 | special installation to be able to call getloadavg. */ | ||
| 82 | |||
| 83 | /* This should always be first. */ | ||
| 84 | #ifdef HAVE_CONFIG_H | ||
| 85 | # include <config.h> | ||
| 86 | #endif | ||
| 87 | |||
| 88 | #include <errno.h> | ||
| 89 | #include <stdbool.h> | ||
| 90 | #include <stdio.h> | ||
| 91 | #include <stdlib.h> | ||
| 92 | |||
| 93 | /* Exclude all the code except the test program at the end | ||
| 94 | if the system has its own `getloadavg' function. */ | ||
| 95 | |||
| 96 | #ifndef HAVE_GETLOADAVG | ||
| 97 | |||
| 98 | # include <sys/types.h> | ||
| 99 | |||
| 100 | /* Both the Emacs and non-Emacs sections want this. Some | ||
| 101 | configuration files' definitions for the LOAD_AVE_CVT macro (like | ||
| 102 | sparc.h's) use macros like FSCALE, defined here. */ | ||
| 103 | # if defined (unix) || defined (__unix) | ||
| 104 | # include <sys/param.h> | ||
| 105 | # endif | ||
| 106 | |||
| 107 | # include "c-strtod.h" | ||
| 108 | # include "cloexec.h" | ||
| 109 | # include "intprops.h" | ||
| 110 | # include "xalloc.h" | ||
| 111 | |||
| 112 | /* The existing Emacs configuration files define a macro called | ||
| 113 | LOAD_AVE_CVT, which accepts a value of type LOAD_AVE_TYPE, and | ||
| 114 | returns the load average multiplied by 100. What we actually want | ||
| 115 | is a macro called LDAV_CVT, which returns the load average as an | ||
| 116 | unmultiplied double. | ||
| 117 | |||
| 118 | For backwards compatibility, we'll define LDAV_CVT in terms of | ||
| 119 | LOAD_AVE_CVT, but future machine config files should just define | ||
| 120 | LDAV_CVT directly. */ | ||
| 121 | |||
| 122 | # if !defined (LDAV_CVT) && defined (LOAD_AVE_CVT) | ||
| 123 | # define LDAV_CVT(n) (LOAD_AVE_CVT (n) / 100.0) | ||
| 124 | # endif | ||
| 125 | |||
| 126 | # if !defined (BSD) && defined (ultrix) | ||
| 127 | /* Ultrix behaves like BSD on Vaxen. */ | ||
| 128 | # define BSD | ||
| 129 | # endif | ||
| 130 | |||
| 131 | # ifdef NeXT | ||
| 132 | /* NeXT in the 2.{0,1,2} releases defines BSD in <sys/param.h>, which | ||
| 133 | conflicts with the definition understood in this file, that this | ||
| 134 | really is BSD. */ | ||
| 135 | # undef BSD | ||
| 136 | |||
| 137 | /* NeXT defines FSCALE in <sys/param.h>. However, we take FSCALE being | ||
| 138 | defined to mean that the nlist method should be used, which is not true. */ | ||
| 139 | # undef FSCALE | ||
| 140 | # endif | ||
| 141 | |||
| 142 | /* Same issues as for NeXT apply to the HURD-based GNU system. */ | ||
| 143 | # ifdef __GNU__ | ||
| 144 | # undef BSD | ||
| 145 | # undef FSCALE | ||
| 146 | # endif /* __GNU__ */ | ||
| 147 | |||
| 148 | /* Set values that are different from the defaults, which are | ||
| 149 | set a little farther down with #ifndef. */ | ||
| 150 | |||
| 151 | |||
| 152 | /* Some shorthands. */ | ||
| 153 | |||
| 154 | # if defined (HPUX) && !defined (hpux) | ||
| 155 | # define hpux | ||
| 156 | # endif | ||
| 157 | |||
| 158 | # if defined (__hpux) && !defined (hpux) | ||
| 159 | # define hpux | ||
| 160 | # endif | ||
| 161 | |||
| 162 | # if defined (__sun) && !defined (sun) | ||
| 163 | # define sun | ||
| 164 | # endif | ||
| 165 | |||
| 166 | # if defined (hp300) && !defined (hpux) | ||
| 167 | # define MORE_BSD | ||
| 168 | # endif | ||
| 169 | |||
| 170 | # if defined (ultrix) && defined (mips) | ||
| 171 | # define decstation | ||
| 172 | # endif | ||
| 173 | |||
| 174 | # if defined (__SVR4) && !defined (SVR4) | ||
| 175 | # define SVR4 | ||
| 176 | # endif | ||
| 177 | |||
| 178 | # if (defined (sun) && defined (SVR4)) || defined (SOLARIS2) | ||
| 179 | # define SUNOS_5 | ||
| 180 | # endif | ||
| 181 | |||
| 182 | # if defined (__osf__) && (defined (__alpha) || defined (__alpha__)) | ||
| 183 | # define OSF_ALPHA | ||
| 184 | # include <sys/mbuf.h> | ||
| 185 | # include <sys/socket.h> | ||
| 186 | # include <net/route.h> | ||
| 187 | # include <sys/table.h> | ||
| 188 | # endif | ||
| 189 | |||
| 190 | # if defined (__osf__) && (defined (mips) || defined (__mips__)) | ||
| 191 | # define OSF_MIPS | ||
| 192 | # include <sys/table.h> | ||
| 193 | # endif | ||
| 194 | |||
| 195 | /* UTek's /bin/cc on the 4300 has no architecture specific cpp define by | ||
| 196 | default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine | ||
| 197 | that with a couple of other things and we'll have a unique match. */ | ||
| 198 | # if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES) | ||
| 199 | # define tek4300 /* Define by emacs, but not by other users. */ | ||
| 200 | # endif | ||
| 201 | |||
| 202 | |||
| 203 | /* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */ | ||
| 204 | # ifndef LOAD_AVE_TYPE | ||
| 205 | |||
| 206 | # ifdef MORE_BSD | ||
| 207 | # define LOAD_AVE_TYPE long | ||
| 208 | # endif | ||
| 209 | |||
| 210 | # ifdef sun | ||
| 211 | # define LOAD_AVE_TYPE long | ||
| 212 | # endif | ||
| 213 | |||
| 214 | # ifdef decstation | ||
| 215 | # define LOAD_AVE_TYPE long | ||
| 216 | # endif | ||
| 217 | |||
| 218 | # ifdef _SEQUENT_ | ||
| 219 | # define LOAD_AVE_TYPE long | ||
| 220 | # endif | ||
| 221 | |||
| 222 | # ifdef sgi | ||
| 223 | # define LOAD_AVE_TYPE long | ||
| 224 | # endif | ||
| 225 | |||
| 226 | # ifdef SVR4 | ||
| 227 | # define LOAD_AVE_TYPE long | ||
| 228 | # endif | ||
| 229 | |||
| 230 | # ifdef sony_news | ||
| 231 | # define LOAD_AVE_TYPE long | ||
| 232 | # endif | ||
| 233 | |||
| 234 | # ifdef sequent | ||
| 235 | # define LOAD_AVE_TYPE long | ||
| 236 | # endif | ||
| 237 | |||
| 238 | # ifdef OSF_ALPHA | ||
| 239 | # define LOAD_AVE_TYPE long | ||
| 240 | # endif | ||
| 241 | |||
| 242 | # if defined (ardent) && defined (titan) | ||
| 243 | # define LOAD_AVE_TYPE long | ||
| 244 | # endif | ||
| 245 | |||
| 246 | # ifdef tek4300 | ||
| 247 | # define LOAD_AVE_TYPE long | ||
| 248 | # endif | ||
| 249 | |||
| 250 | # if defined (alliant) && defined (i860) /* Alliant FX/2800 */ | ||
| 251 | # define LOAD_AVE_TYPE long | ||
| 252 | # endif | ||
| 253 | |||
| 254 | # ifdef _AIX | ||
| 255 | # define LOAD_AVE_TYPE long | ||
| 256 | # endif | ||
| 257 | |||
| 258 | # ifdef convex | ||
| 259 | # define LOAD_AVE_TYPE double | ||
| 260 | # ifndef LDAV_CVT | ||
| 261 | # define LDAV_CVT(n) (n) | ||
| 262 | # endif | ||
| 263 | # endif | ||
| 264 | |||
| 265 | # endif /* No LOAD_AVE_TYPE. */ | ||
| 266 | |||
| 267 | # ifdef OSF_ALPHA | ||
| 268 | /* <sys/param.h> defines an incorrect value for FSCALE on Alpha OSF/1, | ||
| 269 | according to ghazi@noc.rutgers.edu. */ | ||
| 270 | # undef FSCALE | ||
| 271 | # define FSCALE 1024.0 | ||
| 272 | # endif | ||
| 273 | |||
| 274 | # if defined (alliant) && defined (i860) /* Alliant FX/2800 */ | ||
| 275 | /* <sys/param.h> defines an incorrect value for FSCALE on an | ||
| 276 | Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */ | ||
| 277 | # undef FSCALE | ||
| 278 | # define FSCALE 100.0 | ||
| 279 | # endif | ||
| 280 | |||
| 281 | |||
| 282 | # ifndef FSCALE | ||
| 283 | |||
| 284 | /* SunOS and some others define FSCALE in sys/param.h. */ | ||
| 285 | |||
| 286 | # ifdef MORE_BSD | ||
| 287 | # define FSCALE 2048.0 | ||
| 288 | # endif | ||
| 289 | |||
| 290 | # if defined (MIPS) || defined (SVR4) || defined (decstation) | ||
| 291 | # define FSCALE 256 | ||
| 292 | # endif | ||
| 293 | |||
| 294 | # if defined (sgi) || defined (sequent) | ||
| 295 | /* Sometimes both MIPS and sgi are defined, so FSCALE was just defined | ||
| 296 | above under #ifdef MIPS. But we want the sgi value. */ | ||
| 297 | # undef FSCALE | ||
| 298 | # define FSCALE 1000.0 | ||
| 299 | # endif | ||
| 300 | |||
| 301 | # if defined (ardent) && defined (titan) | ||
| 302 | # define FSCALE 65536.0 | ||
| 303 | # endif | ||
| 304 | |||
| 305 | # ifdef tek4300 | ||
| 306 | # define FSCALE 100.0 | ||
| 307 | # endif | ||
| 308 | |||
| 309 | # ifdef _AIX | ||
| 310 | # define FSCALE 65536.0 | ||
| 311 | # endif | ||
| 312 | |||
| 313 | # endif /* Not FSCALE. */ | ||
| 314 | |||
| 315 | # if !defined (LDAV_CVT) && defined (FSCALE) | ||
| 316 | # define LDAV_CVT(n) (((double) (n)) / FSCALE) | ||
| 317 | # endif | ||
| 318 | |||
| 319 | # ifndef NLIST_STRUCT | ||
| 320 | # if HAVE_NLIST_H | ||
| 321 | # define NLIST_STRUCT | ||
| 322 | # endif | ||
| 323 | # endif | ||
| 324 | |||
| 325 | # if defined (sgi) || (defined (mips) && !defined (BSD)) | ||
| 326 | # define FIXUP_KERNEL_SYMBOL_ADDR(nl) ((nl)[0].n_value &= ~(1 << 31)) | ||
| 327 | # endif | ||
| 328 | |||
| 329 | |||
| 330 | # if !defined (KERNEL_FILE) && defined (sequent) | ||
| 331 | # define KERNEL_FILE "/dynix" | ||
| 332 | # endif | ||
| 333 | |||
| 334 | # if !defined (KERNEL_FILE) && defined (hpux) | ||
| 335 | # define KERNEL_FILE "/hp-ux" | ||
| 336 | # endif | ||
| 337 | |||
| 338 | # if !defined (KERNEL_FILE) && (defined (_SEQUENT_) || defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan))) | ||
| 339 | # define KERNEL_FILE "/unix" | ||
| 340 | # endif | ||
| 341 | |||
| 342 | |||
| 343 | # if !defined (LDAV_SYMBOL) && defined (alliant) | ||
| 344 | # define LDAV_SYMBOL "_Loadavg" | ||
| 345 | # endif | ||
| 346 | |||
| 347 | # if !defined (LDAV_SYMBOL) && ((defined (hpux) && !defined (hp9000s300)) || defined (_SEQUENT_) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)) || defined (_AIX)) | ||
| 348 | # define LDAV_SYMBOL "avenrun" | ||
| 349 | # endif | ||
| 350 | |||
| 351 | # include <unistd.h> | ||
| 352 | |||
| 353 | /* LOAD_AVE_TYPE should only get defined if we're going to use the | ||
| 354 | nlist method. */ | ||
| 355 | # if !defined (LOAD_AVE_TYPE) && (defined (BSD) || defined (LDAV_CVT) || defined (KERNEL_FILE) || defined (LDAV_SYMBOL)) | ||
| 356 | # define LOAD_AVE_TYPE double | ||
| 357 | # endif | ||
| 358 | |||
| 359 | # ifdef LOAD_AVE_TYPE | ||
| 360 | |||
| 361 | # ifndef VMS | ||
| 362 | # ifndef __linux__ | ||
| 363 | # ifndef NLIST_STRUCT | ||
| 364 | # include <a.out.h> | ||
| 365 | # else /* NLIST_STRUCT */ | ||
| 366 | # include <nlist.h> | ||
| 367 | # endif /* NLIST_STRUCT */ | ||
| 368 | |||
| 369 | # ifdef SUNOS_5 | ||
| 370 | # include <fcntl.h> | ||
| 371 | # include <kvm.h> | ||
| 372 | # include <kstat.h> | ||
| 373 | # endif | ||
| 374 | |||
| 375 | # if defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC) | ||
| 376 | # include <sys/pstat.h> | ||
| 377 | # endif | ||
| 378 | |||
| 379 | # ifndef KERNEL_FILE | ||
| 380 | # define KERNEL_FILE "/vmunix" | ||
| 381 | # endif /* KERNEL_FILE */ | ||
| 382 | |||
| 383 | # ifndef LDAV_SYMBOL | ||
| 384 | # define LDAV_SYMBOL "_avenrun" | ||
| 385 | # endif /* LDAV_SYMBOL */ | ||
| 386 | # endif /* __linux__ */ | ||
| 387 | |||
| 388 | # else /* VMS */ | ||
| 389 | |||
| 390 | # ifndef eunice | ||
| 391 | # include <iodef.h> | ||
| 392 | # include <descrip.h> | ||
| 393 | # else /* eunice */ | ||
| 394 | # include <vms/iodef.h> | ||
| 395 | # endif /* eunice */ | ||
| 396 | # endif /* VMS */ | ||
| 397 | |||
| 398 | # ifndef LDAV_CVT | ||
| 399 | # define LDAV_CVT(n) ((double) (n)) | ||
| 400 | # endif /* !LDAV_CVT */ | ||
| 401 | |||
| 402 | # endif /* LOAD_AVE_TYPE */ | ||
| 403 | |||
| 404 | # if defined (__GNU__) && !defined (NeXT) | ||
| 405 | /* Note that NeXT Openstep defines __GNU__ even though it should not. */ | ||
| 406 | /* GNU system acts much like NeXT, for load average purposes, | ||
| 407 | but not exactly. */ | ||
| 408 | # define NeXT | ||
| 409 | # define host_self mach_host_self | ||
| 410 | # endif | ||
| 411 | |||
| 412 | # ifdef NeXT | ||
| 413 | # ifdef HAVE_MACH_MACH_H | ||
| 414 | # include <mach/mach.h> | ||
| 415 | # else | ||
| 416 | # include <mach.h> | ||
| 417 | # endif | ||
| 418 | # endif /* NeXT */ | ||
| 419 | |||
| 420 | # ifdef sgi | ||
| 421 | # include <sys/sysmp.h> | ||
| 422 | # endif /* sgi */ | ||
| 423 | |||
| 424 | # ifdef UMAX | ||
| 425 | # include <signal.h> | ||
| 426 | # include <sys/time.h> | ||
| 427 | # include <sys/wait.h> | ||
| 428 | # include <sys/syscall.h> | ||
| 429 | |||
| 430 | # ifdef UMAX_43 | ||
| 431 | # include <machine/cpu.h> | ||
| 432 | # include <inq_stats/statistics.h> | ||
| 433 | # include <inq_stats/sysstats.h> | ||
| 434 | # include <inq_stats/cpustats.h> | ||
| 435 | # include <inq_stats/procstats.h> | ||
| 436 | # else /* Not UMAX_43. */ | ||
| 437 | # include <sys/sysdefs.h> | ||
| 438 | # include <sys/statistics.h> | ||
| 439 | # include <sys/sysstats.h> | ||
| 440 | # include <sys/cpudefs.h> | ||
| 441 | # include <sys/cpustats.h> | ||
| 442 | # include <sys/procstats.h> | ||
| 443 | # endif /* Not UMAX_43. */ | ||
| 444 | # endif /* UMAX */ | ||
| 445 | |||
| 446 | # ifdef DGUX | ||
| 447 | # include <sys/dg_sys_info.h> | ||
| 448 | # endif | ||
| 449 | |||
| 450 | # include "fcntl--.h" | ||
| 451 | |||
| 452 | /* Avoid static vars inside a function since in HPUX they dump as pure. */ | ||
| 453 | |||
| 454 | # ifdef NeXT | ||
| 455 | static processor_set_t default_set; | ||
| 456 | static bool getloadavg_initialized; | ||
| 457 | # endif /* NeXT */ | ||
| 458 | |||
| 459 | # ifdef UMAX | ||
| 460 | static unsigned int cpus = 0; | ||
| 461 | static unsigned int samples; | ||
| 462 | # endif /* UMAX */ | ||
| 463 | |||
| 464 | # ifdef DGUX | ||
| 465 | static struct dg_sys_info_load_info load_info; /* what-a-mouthful! */ | ||
| 466 | # endif /* DGUX */ | ||
| 467 | |||
| 468 | # if !defined (HAVE_LIBKSTAT) && defined (LOAD_AVE_TYPE) | ||
| 469 | /* File descriptor open to /dev/kmem or VMS load ave driver. */ | ||
| 470 | static int channel; | ||
| 471 | /* True iff channel is valid. */ | ||
| 472 | static bool getloadavg_initialized; | ||
| 473 | /* Offset in kmem to seek to read load average, or 0 means invalid. */ | ||
| 474 | static long offset; | ||
| 475 | |||
| 476 | # if !defined (VMS) && !defined (sgi) && !defined (__linux__) | ||
| 477 | static struct nlist nl[2]; | ||
| 478 | # endif /* Not VMS or sgi */ | ||
| 479 | |||
| 480 | # ifdef SUNOS_5 | ||
| 481 | static kvm_t *kd; | ||
| 482 | # endif /* SUNOS_5 */ | ||
| 483 | |||
| 484 | # endif /* LOAD_AVE_TYPE && !HAVE_LIBKSTAT */ | ||
| 485 | |||
| 486 | /* Put the 1 minute, 5 minute and 15 minute load averages | ||
| 487 | into the first NELEM elements of LOADAVG. | ||
| 488 | Return the number written (never more than 3, but may be less than NELEM), | ||
| 489 | or -1 if an error occurred. */ | ||
| 490 | |||
| 491 | int | ||
| 492 | getloadavg (double loadavg[], int nelem) | ||
| 493 | { | ||
| 494 | int elem = 0; /* Return value. */ | ||
| 495 | |||
| 496 | # ifdef NO_GET_LOAD_AVG | ||
| 497 | # define LDAV_DONE | ||
| 498 | /* Set errno to zero to indicate that there was no particular error; | ||
| 499 | this function just can't work at all on this system. */ | ||
| 500 | errno = 0; | ||
| 501 | elem = -1; | ||
| 502 | # endif | ||
| 503 | |||
| 504 | # if !defined (LDAV_DONE) && defined (HAVE_LIBKSTAT) | ||
| 505 | /* Use libkstat because we don't have to be root. */ | ||
| 506 | # define LDAV_DONE | ||
| 507 | kstat_ctl_t *kc; | ||
| 508 | kstat_t *ksp; | ||
| 509 | kstat_named_t *kn; | ||
| 510 | |||
| 511 | kc = kstat_open (); | ||
| 512 | if (kc == 0) | ||
| 513 | return -1; | ||
| 514 | ksp = kstat_lookup (kc, "unix", 0, "system_misc"); | ||
| 515 | if (ksp == 0) | ||
| 516 | return -1; | ||
| 517 | if (kstat_read (kc, ksp, 0) == -1) | ||
| 518 | return -1; | ||
| 519 | |||
| 520 | |||
| 521 | kn = kstat_data_lookup (ksp, "avenrun_1min"); | ||
| 522 | if (kn == 0) | ||
| 523 | { | ||
| 524 | /* Return -1 if no load average information is available. */ | ||
| 525 | nelem = 0; | ||
| 526 | elem = -1; | ||
| 527 | } | ||
| 528 | |||
| 529 | if (nelem >= 1) | ||
| 530 | loadavg[elem++] = (double) kn->value.ul / FSCALE; | ||
| 531 | |||
| 532 | if (nelem >= 2) | ||
| 533 | { | ||
| 534 | kn = kstat_data_lookup (ksp, "avenrun_5min"); | ||
| 535 | if (kn != 0) | ||
| 536 | { | ||
| 537 | loadavg[elem++] = (double) kn->value.ul / FSCALE; | ||
| 538 | |||
| 539 | if (nelem >= 3) | ||
| 540 | { | ||
| 541 | kn = kstat_data_lookup (ksp, "avenrun_15min"); | ||
| 542 | if (kn != 0) | ||
| 543 | loadavg[elem++] = (double) kn->value.ul / FSCALE; | ||
| 544 | } | ||
| 545 | } | ||
| 546 | } | ||
| 547 | |||
| 548 | kstat_close (kc); | ||
| 549 | # endif /* HAVE_LIBKSTAT */ | ||
| 550 | |||
| 551 | # if !defined (LDAV_DONE) && defined (hpux) && defined (HAVE_PSTAT_GETDYNAMIC) | ||
| 552 | /* Use pstat_getdynamic() because we don't have to be root. */ | ||
| 553 | # define LDAV_DONE | ||
| 554 | # undef LOAD_AVE_TYPE | ||
| 555 | |||
| 556 | struct pst_dynamic dyn_info; | ||
| 557 | if (pstat_getdynamic (&dyn_info, sizeof (dyn_info), 0, 0) < 0) | ||
| 558 | return -1; | ||
| 559 | if (nelem > 0) | ||
| 560 | loadavg[elem++] = dyn_info.psd_avg_1_min; | ||
| 561 | if (nelem > 1) | ||
| 562 | loadavg[elem++] = dyn_info.psd_avg_5_min; | ||
| 563 | if (nelem > 2) | ||
| 564 | loadavg[elem++] = dyn_info.psd_avg_15_min; | ||
| 565 | |||
| 566 | # endif /* hpux && HAVE_PSTAT_GETDYNAMIC */ | ||
| 567 | |||
| 568 | # if !defined (LDAV_DONE) && (defined (__linux__) || defined (__CYGWIN__)) | ||
| 569 | # define LDAV_DONE | ||
| 570 | # undef LOAD_AVE_TYPE | ||
| 571 | |||
| 572 | # ifndef LINUX_LDAV_FILE | ||
| 573 | # define LINUX_LDAV_FILE "/proc/loadavg" | ||
| 574 | # endif | ||
| 575 | |||
| 576 | char ldavgbuf[3 * (INT_STRLEN_BOUND (int) + sizeof ".00 ")]; | ||
| 577 | char const *ptr = ldavgbuf; | ||
| 578 | int fd, count; | ||
| 579 | |||
| 580 | fd = open (LINUX_LDAV_FILE, O_RDONLY); | ||
| 581 | if (fd == -1) | ||
| 582 | return -1; | ||
| 583 | count = read (fd, ldavgbuf, sizeof ldavgbuf - 1); | ||
| 584 | (void) close (fd); | ||
| 585 | if (count <= 0) | ||
| 586 | return -1; | ||
| 587 | ldavgbuf[count] = '\0'; | ||
| 588 | |||
| 589 | for (elem = 0; elem < nelem; elem++) | ||
| 590 | { | ||
| 591 | char *endptr; | ||
| 592 | double d = c_strtod (ptr, &endptr); | ||
| 593 | if (ptr == endptr) | ||
| 594 | { | ||
| 595 | if (elem == 0) | ||
| 596 | return -1; | ||
| 597 | break; | ||
| 598 | } | ||
| 599 | loadavg[elem] = d; | ||
| 600 | ptr = endptr; | ||
| 601 | } | ||
| 602 | |||
| 603 | return elem; | ||
| 604 | |||
| 605 | # endif /* __linux__ || __CYGWIN__ */ | ||
| 606 | |||
| 607 | # if !defined (LDAV_DONE) && defined (__NetBSD__) | ||
| 608 | # define LDAV_DONE | ||
| 609 | # undef LOAD_AVE_TYPE | ||
| 610 | |||
| 611 | # ifndef NETBSD_LDAV_FILE | ||
| 612 | # define NETBSD_LDAV_FILE "/kern/loadavg" | ||
| 613 | # endif | ||
| 614 | |||
| 615 | unsigned long int load_ave[3], scale; | ||
| 616 | int count; | ||
| 617 | FILE *fp; | ||
| 618 | |||
| 619 | fp = fopen (NETBSD_LDAV_FILE, "r"); | ||
| 620 | if (fp == NULL) | ||
| 621 | return -1; | ||
| 622 | count = fscanf (fp, "%lu %lu %lu %lu\n", | ||
| 623 | &load_ave[0], &load_ave[1], &load_ave[2], | ||
| 624 | &scale); | ||
| 625 | (void) fclose (fp); | ||
| 626 | if (count != 4) | ||
| 627 | return -1; | ||
| 628 | |||
| 629 | for (elem = 0; elem < nelem; elem++) | ||
| 630 | loadavg[elem] = (double) load_ave[elem] / (double) scale; | ||
| 631 | |||
| 632 | return elem; | ||
| 633 | |||
| 634 | # endif /* __NetBSD__ */ | ||
| 635 | |||
| 636 | # if !defined (LDAV_DONE) && defined (NeXT) | ||
| 637 | # define LDAV_DONE | ||
| 638 | /* The NeXT code was adapted from iscreen 3.2. */ | ||
| 639 | |||
| 640 | host_t host; | ||
| 641 | struct processor_set_basic_info info; | ||
| 642 | unsigned int info_count; | ||
| 643 | |||
| 644 | /* We only know how to get the 1-minute average for this system, | ||
| 645 | so even if the caller asks for more than 1, we only return 1. */ | ||
| 646 | |||
| 647 | if (!getloadavg_initialized) | ||
| 648 | { | ||
| 649 | if (processor_set_default (host_self (), &default_set) == KERN_SUCCESS) | ||
| 650 | getloadavg_initialized = true; | ||
| 651 | } | ||
| 652 | |||
| 653 | if (getloadavg_initialized) | ||
| 654 | { | ||
| 655 | info_count = PROCESSOR_SET_BASIC_INFO_COUNT; | ||
| 656 | if (processor_set_info (default_set, PROCESSOR_SET_BASIC_INFO, &host, | ||
| 657 | (processor_set_info_t) &info, &info_count) | ||
| 658 | != KERN_SUCCESS) | ||
| 659 | getloadavg_initialized = false; | ||
| 660 | else | ||
| 661 | { | ||
| 662 | if (nelem > 0) | ||
| 663 | loadavg[elem++] = (double) info.load_average / LOAD_SCALE; | ||
| 664 | } | ||
| 665 | } | ||
| 666 | |||
| 667 | if (!getloadavg_initialized) | ||
| 668 | return -1; | ||
| 669 | # endif /* NeXT */ | ||
| 670 | |||
| 671 | # if !defined (LDAV_DONE) && defined (UMAX) | ||
| 672 | # define LDAV_DONE | ||
| 673 | /* UMAX 4.2, which runs on the Encore Multimax multiprocessor, does not | ||
| 674 | have a /dev/kmem. Information about the workings of the running kernel | ||
| 675 | can be gathered with inq_stats system calls. | ||
| 676 | We only know how to get the 1-minute average for this system. */ | ||
| 677 | |||
| 678 | struct proc_summary proc_sum_data; | ||
| 679 | struct stat_descr proc_info; | ||
| 680 | double load; | ||
| 681 | register unsigned int i, j; | ||
| 682 | |||
| 683 | if (cpus == 0) | ||
| 684 | { | ||
| 685 | register unsigned int c, i; | ||
| 686 | struct cpu_config conf; | ||
| 687 | struct stat_descr desc; | ||
| 688 | |||
| 689 | desc.sd_next = 0; | ||
| 690 | desc.sd_subsys = SUBSYS_CPU; | ||
| 691 | desc.sd_type = CPUTYPE_CONFIG; | ||
| 692 | desc.sd_addr = (char *) &conf; | ||
| 693 | desc.sd_size = sizeof conf; | ||
| 694 | |||
| 695 | if (inq_stats (1, &desc)) | ||
| 696 | return -1; | ||
| 697 | |||
| 698 | c = 0; | ||
| 699 | for (i = 0; i < conf.config_maxclass; ++i) | ||
| 700 | { | ||
| 701 | struct class_stats stats; | ||
| 702 | bzero ((char *) &stats, sizeof stats); | ||
| 703 | |||
| 704 | desc.sd_type = CPUTYPE_CLASS; | ||
| 705 | desc.sd_objid = i; | ||
| 706 | desc.sd_addr = (char *) &stats; | ||
| 707 | desc.sd_size = sizeof stats; | ||
| 708 | |||
| 709 | if (inq_stats (1, &desc)) | ||
| 710 | return -1; | ||
| 711 | |||
| 712 | c += stats.class_numcpus; | ||
| 713 | } | ||
| 714 | cpus = c; | ||
| 715 | samples = cpus < 2 ? 3 : (2 * cpus / 3); | ||
| 716 | } | ||
| 717 | |||
| 718 | proc_info.sd_next = 0; | ||
| 719 | proc_info.sd_subsys = SUBSYS_PROC; | ||
| 720 | proc_info.sd_type = PROCTYPE_SUMMARY; | ||
| 721 | proc_info.sd_addr = (char *) &proc_sum_data; | ||
| 722 | proc_info.sd_size = sizeof (struct proc_summary); | ||
| 723 | proc_info.sd_sizeused = 0; | ||
| 724 | |||
| 725 | if (inq_stats (1, &proc_info) != 0) | ||
| 726 | return -1; | ||
| 727 | |||
| 728 | load = proc_sum_data.ps_nrunnable; | ||
| 729 | j = 0; | ||
| 730 | for (i = samples - 1; i > 0; --i) | ||
| 731 | { | ||
| 732 | load += proc_sum_data.ps_nrun[j]; | ||
| 733 | if (j++ == PS_NRUNSIZE) | ||
| 734 | j = 0; | ||
| 735 | } | ||
| 736 | |||
| 737 | if (nelem > 0) | ||
| 738 | loadavg[elem++] = load / samples / cpus; | ||
| 739 | # endif /* UMAX */ | ||
| 740 | |||
| 741 | # if !defined (LDAV_DONE) && defined (DGUX) | ||
| 742 | # define LDAV_DONE | ||
| 743 | /* This call can return -1 for an error, but with good args | ||
| 744 | it's not supposed to fail. The first argument is for no | ||
| 745 | apparent reason of type `long int *'. */ | ||
| 746 | dg_sys_info ((long int *) &load_info, | ||
| 747 | DG_SYS_INFO_LOAD_INFO_TYPE, | ||
| 748 | DG_SYS_INFO_LOAD_VERSION_0); | ||
| 749 | |||
| 750 | if (nelem > 0) | ||
| 751 | loadavg[elem++] = load_info.one_minute; | ||
| 752 | if (nelem > 1) | ||
| 753 | loadavg[elem++] = load_info.five_minute; | ||
| 754 | if (nelem > 2) | ||
| 755 | loadavg[elem++] = load_info.fifteen_minute; | ||
| 756 | # endif /* DGUX */ | ||
| 757 | |||
| 758 | # if !defined (LDAV_DONE) && defined (apollo) | ||
| 759 | # define LDAV_DONE | ||
| 760 | /* Apollo code from lisch@mentorg.com (Ray Lischner). | ||
| 761 | |||
| 762 | This system call is not documented. The load average is obtained as | ||
| 763 | three long integers, for the load average over the past minute, | ||
| 764 | five minutes, and fifteen minutes. Each value is a scaled integer, | ||
| 765 | with 16 bits of integer part and 16 bits of fraction part. | ||
| 766 | |||
| 767 | I'm not sure which operating system first supported this system call, | ||
| 768 | but I know that SR10.2 supports it. */ | ||
| 769 | |||
| 770 | extern void proc1_$get_loadav (); | ||
| 771 | unsigned long load_ave[3]; | ||
| 772 | |||
| 773 | proc1_$get_loadav (load_ave); | ||
| 774 | |||
| 775 | if (nelem > 0) | ||
| 776 | loadavg[elem++] = load_ave[0] / 65536.0; | ||
| 777 | if (nelem > 1) | ||
| 778 | loadavg[elem++] = load_ave[1] / 65536.0; | ||
| 779 | if (nelem > 2) | ||
| 780 | loadavg[elem++] = load_ave[2] / 65536.0; | ||
| 781 | # endif /* apollo */ | ||
| 782 | |||
| 783 | # if !defined (LDAV_DONE) && defined (OSF_MIPS) | ||
| 784 | # define LDAV_DONE | ||
| 785 | |||
| 786 | struct tbl_loadavg load_ave; | ||
| 787 | table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave)); | ||
| 788 | loadavg[elem++] | ||
| 789 | = (load_ave.tl_lscale == 0 | ||
| 790 | ? load_ave.tl_avenrun.d[0] | ||
| 791 | : (load_ave.tl_avenrun.l[0] / (double) load_ave.tl_lscale)); | ||
| 792 | # endif /* OSF_MIPS */ | ||
| 793 | |||
| 794 | # if !defined (LDAV_DONE) && (defined (__MSDOS__) || defined (WINDOWS32)) | ||
| 795 | # define LDAV_DONE | ||
| 796 | |||
| 797 | /* A faithful emulation is going to have to be saved for a rainy day. */ | ||
| 798 | for ( ; elem < nelem; elem++) | ||
| 799 | { | ||
| 800 | loadavg[elem] = 0.0; | ||
| 801 | } | ||
| 802 | # endif /* __MSDOS__ || WINDOWS32 */ | ||
| 803 | |||
| 804 | # if !defined (LDAV_DONE) && defined (OSF_ALPHA) | ||
| 805 | # define LDAV_DONE | ||
| 806 | |||
| 807 | struct tbl_loadavg load_ave; | ||
| 808 | table (TBL_LOADAVG, 0, &load_ave, 1, sizeof (load_ave)); | ||
| 809 | for (elem = 0; elem < nelem; elem++) | ||
| 810 | loadavg[elem] | ||
| 811 | = (load_ave.tl_lscale == 0 | ||
| 812 | ? load_ave.tl_avenrun.d[elem] | ||
| 813 | : (load_ave.tl_avenrun.l[elem] / (double) load_ave.tl_lscale)); | ||
| 814 | # endif /* OSF_ALPHA */ | ||
| 815 | |||
| 816 | # if !defined (LDAV_DONE) && defined (VMS) | ||
| 817 | /* VMS specific code -- read from the Load Ave driver. */ | ||
| 818 | |||
| 819 | LOAD_AVE_TYPE load_ave[3]; | ||
| 820 | static bool getloadavg_initialized; | ||
| 821 | # ifdef eunice | ||
| 822 | struct | ||
| 823 | { | ||
| 824 | int dsc$w_length; | ||
| 825 | char *dsc$a_pointer; | ||
| 826 | } descriptor; | ||
| 827 | # endif | ||
| 828 | |||
| 829 | /* Ensure that there is a channel open to the load ave device. */ | ||
| 830 | if (!getloadavg_initialized) | ||
| 831 | { | ||
| 832 | /* Attempt to open the channel. */ | ||
| 833 | # ifdef eunice | ||
| 834 | descriptor.dsc$w_length = 18; | ||
| 835 | descriptor.dsc$a_pointer = "$$VMS_LOAD_AVERAGE"; | ||
| 836 | # else | ||
| 837 | $DESCRIPTOR (descriptor, "LAV0:"); | ||
| 838 | # endif | ||
| 839 | if (sys$assign (&descriptor, &channel, 0, 0) & 1) | ||
| 840 | getloadavg_initialized = true; | ||
| 841 | } | ||
| 842 | |||
| 843 | /* Read the load average vector. */ | ||
| 844 | if (getloadavg_initialized | ||
| 845 | && !(sys$qiow (0, channel, IO$_READVBLK, 0, 0, 0, | ||
| 846 | load_ave, 12, 0, 0, 0, 0) & 1)) | ||
| 847 | { | ||
| 848 | sys$dassgn (channel); | ||
| 849 | getloadavg_initialized = false; | ||
| 850 | } | ||
| 851 | |||
| 852 | if (!getloadavg_initialized) | ||
| 853 | return -1; | ||
| 854 | # endif /* VMS */ | ||
| 855 | |||
| 856 | # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) && !defined (VMS) | ||
| 857 | |||
| 858 | /* UNIX-specific code -- read the average from /dev/kmem. */ | ||
| 859 | |||
| 860 | # define LDAV_PRIVILEGED /* This code requires special installation. */ | ||
| 861 | |||
| 862 | LOAD_AVE_TYPE load_ave[3]; | ||
| 863 | |||
| 864 | /* Get the address of LDAV_SYMBOL. */ | ||
| 865 | if (offset == 0) | ||
| 866 | { | ||
| 867 | # ifndef sgi | ||
| 868 | # ifndef NLIST_STRUCT | ||
| 869 | strcpy (nl[0].n_name, LDAV_SYMBOL); | ||
| 870 | strcpy (nl[1].n_name, ""); | ||
| 871 | # else /* NLIST_STRUCT */ | ||
| 872 | # ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME | ||
| 873 | nl[0].n_un.n_name = LDAV_SYMBOL; | ||
| 874 | nl[1].n_un.n_name = 0; | ||
| 875 | # else /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */ | ||
| 876 | nl[0].n_name = LDAV_SYMBOL; | ||
| 877 | nl[1].n_name = 0; | ||
| 878 | # endif /* not HAVE_STRUCT_NLIST_N_UN_N_NAME */ | ||
| 879 | # endif /* NLIST_STRUCT */ | ||
| 880 | |||
| 881 | # ifndef SUNOS_5 | ||
| 882 | if ( | ||
| 883 | # if !(defined (_AIX) && !defined (ps2)) | ||
| 884 | nlist (KERNEL_FILE, nl) | ||
| 885 | # else /* _AIX */ | ||
| 886 | knlist (nl, 1, sizeof (nl[0])) | ||
| 887 | # endif | ||
| 888 | >= 0) | ||
| 889 | /* Omit "&& nl[0].n_type != 0 " -- it breaks on Sun386i. */ | ||
| 890 | { | ||
| 891 | # ifdef FIXUP_KERNEL_SYMBOL_ADDR | ||
| 892 | FIXUP_KERNEL_SYMBOL_ADDR (nl); | ||
| 893 | # endif | ||
| 894 | offset = nl[0].n_value; | ||
| 895 | } | ||
| 896 | # endif /* !SUNOS_5 */ | ||
| 897 | # else /* sgi */ | ||
| 898 | int ldav_off; | ||
| 899 | |||
| 900 | ldav_off = sysmp (MP_KERNADDR, MPKA_AVENRUN); | ||
| 901 | if (ldav_off != -1) | ||
| 902 | offset = (long int) ldav_off & 0x7fffffff; | ||
| 903 | # endif /* sgi */ | ||
| 904 | } | ||
| 905 | |||
| 906 | /* Make sure we have /dev/kmem open. */ | ||
| 907 | if (!getloadavg_initialized) | ||
| 908 | { | ||
| 909 | # ifndef SUNOS_5 | ||
| 910 | channel = open ("/dev/kmem", O_RDONLY); | ||
| 911 | if (channel >= 0) | ||
| 912 | { | ||
| 913 | /* Set the channel to close on exec, so it does not | ||
| 914 | litter any child's descriptor table. */ | ||
| 915 | set_cloexec_flag (channel, true); | ||
| 916 | getloadavg_initialized = true; | ||
| 917 | } | ||
| 918 | # else /* SUNOS_5 */ | ||
| 919 | /* We pass 0 for the kernel, corefile, and swapfile names | ||
| 920 | to use the currently running kernel. */ | ||
| 921 | kd = kvm_open (0, 0, 0, O_RDONLY, 0); | ||
| 922 | if (kd != 0) | ||
| 923 | { | ||
| 924 | /* nlist the currently running kernel. */ | ||
| 925 | kvm_nlist (kd, nl); | ||
| 926 | offset = nl[0].n_value; | ||
| 927 | getloadavg_initialized = true; | ||
| 928 | } | ||
| 929 | # endif /* SUNOS_5 */ | ||
| 930 | } | ||
| 931 | |||
| 932 | /* If we can, get the load average values. */ | ||
| 933 | if (offset && getloadavg_initialized) | ||
| 934 | { | ||
| 935 | /* Try to read the load. */ | ||
| 936 | # ifndef SUNOS_5 | ||
| 937 | if (lseek (channel, offset, 0) == -1L | ||
| 938 | || read (channel, (char *) load_ave, sizeof (load_ave)) | ||
| 939 | != sizeof (load_ave)) | ||
| 940 | { | ||
| 941 | close (channel); | ||
| 942 | getloadavg_initialized = false; | ||
| 943 | } | ||
| 944 | # else /* SUNOS_5 */ | ||
| 945 | if (kvm_read (kd, offset, (char *) load_ave, sizeof (load_ave)) | ||
| 946 | != sizeof (load_ave)) | ||
| 947 | { | ||
| 948 | kvm_close (kd); | ||
| 949 | getloadavg_initialized = false; | ||
| 950 | } | ||
| 951 | # endif /* SUNOS_5 */ | ||
| 952 | } | ||
| 953 | |||
| 954 | if (offset == 0 || !getloadavg_initialized) | ||
| 955 | return -1; | ||
| 956 | # endif /* LOAD_AVE_TYPE and not VMS */ | ||
| 957 | |||
| 958 | # if !defined (LDAV_DONE) && defined (LOAD_AVE_TYPE) /* Including VMS. */ | ||
| 959 | if (nelem > 0) | ||
| 960 | loadavg[elem++] = LDAV_CVT (load_ave[0]); | ||
| 961 | if (nelem > 1) | ||
| 962 | loadavg[elem++] = LDAV_CVT (load_ave[1]); | ||
| 963 | if (nelem > 2) | ||
| 964 | loadavg[elem++] = LDAV_CVT (load_ave[2]); | ||
| 965 | |||
| 966 | # define LDAV_DONE | ||
| 967 | # endif /* !LDAV_DONE && LOAD_AVE_TYPE */ | ||
| 968 | |||
| 969 | # if !defined LDAV_DONE | ||
| 970 | /* Set errno to zero to indicate that there was no particular error; | ||
| 971 | this function just can't work at all on this system. */ | ||
| 972 | errno = 0; | ||
| 973 | elem = -1; | ||
| 974 | # endif | ||
| 975 | return elem; | ||
| 976 | } | ||
| 977 | |||
| 978 | #endif /* ! HAVE_GETLOADAVG */ | ||
| 979 | |||
| 980 | #ifdef TEST | ||
| 981 | int | ||
| 982 | main (int argc, char **argv) | ||
| 983 | { | ||
| 984 | int naptime = 0; | ||
| 985 | |||
| 986 | if (argc > 1) | ||
| 987 | naptime = atoi (argv[1]); | ||
| 988 | |||
| 989 | while (1) | ||
| 990 | { | ||
| 991 | double avg[3]; | ||
| 992 | int loads; | ||
| 993 | |||
| 994 | errno = 0; /* Don't be misled if it doesn't set errno. */ | ||
| 995 | loads = getloadavg (avg, 3); | ||
| 996 | if (loads == -1) | ||
| 997 | { | ||
| 998 | perror ("Error getting load average"); | ||
| 999 | return EXIT_FAILURE; | ||
| 1000 | } | ||
| 1001 | if (loads > 0) | ||
| 1002 | printf ("1-minute: %f ", avg[0]); | ||
| 1003 | if (loads > 1) | ||
| 1004 | printf ("5-minute: %f ", avg[1]); | ||
| 1005 | if (loads > 2) | ||
| 1006 | printf ("15-minute: %f ", avg[2]); | ||
| 1007 | if (loads > 0) | ||
| 1008 | putchar ('\n'); | ||
| 1009 | |||
| 1010 | if (naptime == 0) | ||
| 1011 | break; | ||
| 1012 | sleep (naptime); | ||
| 1013 | } | ||
| 1014 | |||
| 1015 | return EXIT_SUCCESS; | ||
| 1016 | } | ||
| 1017 | #endif /* TEST */ | ||
