src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006-2008  Florian Forster (Mach code)
   5  * Copyright (C) 2008  Oleg King
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  20  *
  21  * Authors:
  22  *   Lyonel Vincent <lyonel at ezix.org>
  23  *   Florian octo Forster <octo at verplant.org>
  24  *   Oleg King <king2 at kaluga.ru>
  25  **/
  26
  27 #include "collectd.h"
  28 #include "common.h"
  29 #include "plugin.h"
  30 #include "configfile.h"
  31
  32 /* Include header files for the mach system, if they exist.. */
  33 #if HAVE_THREAD_INFO
  34 #  if HAVE_MACH_MACH_INIT_H
  35 #    include <mach/mach_init.h>
  36 #  endif
  37 #  if HAVE_MACH_HOST_PRIV_H
  38 #    include <mach/host_priv.h>
  39 #  endif
  40 #  if HAVE_MACH_MACH_ERROR_H
  41 #    include <mach/mach_error.h>
  42 #  endif
  43 #  if HAVE_MACH_MACH_HOST_H
  44 #    include <mach/mach_host.h>
  45 #  endif
  46 #  if HAVE_MACH_MACH_PORT_H
  47 #    include <mach/mach_port.h>
  48 #  endif
  49 #  if HAVE_MACH_MACH_TYPES_H
  50 #    include <mach/mach_types.h>
  51 #  endif
  52 #  if HAVE_MACH_MESSAGE_H
  53 #    include <mach/message.h>
  54 #  endif
  55 #  if HAVE_MACH_PROCESSOR_SET_H
  56 #    include <mach/processor_set.h>
  57 #  endif
  58 #  if HAVE_MACH_TASK_H
  59 #    include <mach/task.h>
  60 #  endif
  61 #  if HAVE_MACH_THREAD_ACT_H
  62 #    include <mach/thread_act.h>
  63 #  endif
  64 #  if HAVE_MACH_VM_REGION_H
  65 #    include <mach/vm_region.h>
  66 #  endif
  67 #  if HAVE_MACH_VM_MAP_H
  68 #    include <mach/vm_map.h>
  69 #  endif
  70 #  if HAVE_MACH_VM_PROT_H
  71 #    include <mach/vm_prot.h>
  72 #  endif
  73 #  if HAVE_SYS_SYSCTL_H
  74 #    include <sys/sysctl.h>
  75 #  endif
  76 /* #endif HAVE_THREAD_INFO */
  77
  78 #elif KERNEL_LINUX
  79 #  if HAVE_LINUX_CONFIG_H
  80 #    include <linux/config.h>
  81 #  endif
  82 #  ifndef CONFIG_HZ
  83 #    define CONFIG_HZ 100
  84 #  endif
  85 /* #endif KERNEL_LINUX */
  86
  87 #elif HAVE_KVM_H
  88 #  include <kvm.h>
  89 #  include <sys/user.h>
  90 #  include <sys/proc.h>
  91 #  if HAVE_SYS_SYSCTL_H
  92 #    include <sys/sysctl.h>
  93 #  endif
  94 /* #endif HAVE_KVM_H */
  95
  96 #else
  97 # error "No applicable input method."
  98 #endif
  99
 100 #if HAVE_REGEX_H
 101 # include <regex.h>
 102 #endif
 103
 104 #define BUFSIZE 256
 105
 106 static const char *config_keys[] =
 107 {
 108         "Process",
 109         "ProcessMatch",
 110         NULL
 111 };
 112 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 113
 114 typedef struct procstat_entry_s
 115 {
 116         unsigned long id;
 117         unsigned long age;
 118
 119         unsigned long num_proc;
 120         unsigned long num_lwp;
 121         unsigned long vmem_rss;
 122
 123         unsigned long vmem_minflt;
 124         unsigned long vmem_majflt;
 125         unsigned long vmem_minflt_counter;
 126         unsigned long vmem_majflt_counter;
 127
 128         unsigned long cpu_user;
 129         unsigned long cpu_system;
 130         unsigned long cpu_user_counter;
 131         unsigned long cpu_system_counter;
 132
 133         struct procstat_entry_s *next;
 134 } procstat_entry_t;
 135
 136 #define PROCSTAT_NAME_LEN 256
 137 typedef struct procstat
 138 {
 139         char          name[PROCSTAT_NAME_LEN];
 140 #if HAVE_REGEX_H
 141         regex_t *re;
 142 #endif
 143
 144         unsigned long num_proc;
 145         unsigned long num_lwp;
 146         unsigned long vmem_rss;
 147
 148         unsigned long vmem_minflt_counter;
 149         unsigned long vmem_majflt_counter;
 150
 151         unsigned long cpu_user_counter;
 152         unsigned long cpu_system_counter;
 153
 154         struct procstat   *next;
 155         struct procstat_entry_s *instances;
 156 } procstat_t;
 157
 158 static procstat_t *list_head_g = NULL;
 159
 160 #if HAVE_THREAD_INFO
 161 static mach_port_t port_host_self;
 162 static mach_port_t port_task_self;
 163
 164 static processor_set_name_array_t pset_list;
 165 static mach_msg_type_number_t     pset_list_len;
 166 /* #endif HAVE_THREAD_INFO */
 167
 168 #elif KERNEL_LINUX
 169 static long pagesize_g;
 170 #endif /* KERNEL_LINUX */
 171
 172 /* put name of process from config to list_head_g tree
 173    list_head_g is a list of 'procstat_t' structs with
 174    processes names we want to watch */
 175 static void ps_list_register (const char *name, const char *regexp)
 176 {
 177         procstat_t *new;
 178         procstat_t *ptr;
 179         int status;
 180
 181         new = (procstat_t *) malloc (sizeof (procstat_t));
 182         if (new == NULL)
 183         {
 184                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 185                 return;
 186         }
 187         memset (new, 0, sizeof (procstat_t));
 188         sstrncpy (new->name, name, sizeof (new->name));
 189
 190 #if HAVE_REGEX_H
 191         if (regexp != NULL)
 192         {
 193                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 194                 new->re = (regex_t *) malloc (sizeof (regex_t));
 195                 if (new->re == NULL)
 196                 {
 197                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 198                         sfree (new);
 199                         return;
 200                 }
 201
 202                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 203                 if (status != 0)
 204                 {
 205                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 206                         sfree(new->re);
 207                         return;
 208                 }
 209         }
 210 #else
 211         if (regexp != NULL)
 212         {
 213                 ERROR ("processes plugin: ps_list_register: "
 214                                 "Regular expression \"%s\" found in config "
 215                                 "file, but support for regular expressions "
 216                                 "has been dispabled at compile time.",
 217                                 regexp);
 218                 sfree (new);
 219                 return;
 220         }
 221 #endif
 222
 223         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 224         {
 225                 if (strcmp (ptr->name, name) == 0)
 226                 {
 227                         WARNING ("processes plugin: You have configured more "
 228                                         "than one `Process' or "
 229                                         "`ProcessMatch' with the same name. "
 230                                         "All but the first setting will be "
 231                                         "ignored.");
 232                         sfree (new->re);
 233                         sfree (new);
 234                         return;
 235                 }
 236
 237                 if (ptr->next == NULL)
 238                         break;
 239         }
 240
 241         if (ptr == NULL)
 242                 list_head_g = new;
 243         else
 244                 ptr->next = new;
 245 } /* void ps_list_register */
 246
 247 /* try to match name against entry, returns 1 if success */
 248 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 249 {
 250 #if HAVE_REGEX_H
 251         if (ps->re != NULL)
 252         {
 253                 int status;
 254                 const char *str;
 255
 256                 str = cmdline;
 257                 if ((str == NULL) || (str[0] == 0))
 258                         str = name;
 259
 260                 assert (str != NULL);
 261
 262                 status = regexec (ps->re, str,
 263                                 /* nmatch = */ 0,
 264                                 /* pmatch = */ NULL,
 265                                 /* eflags = */ 0);
 266                 if (status == 0)
 267                         return (1);
 268         }
 269         else
 270 #endif
 271         if (strcmp (ps->name, name) == 0)
 272                 return (1);
 273
 274         return (0);
 275 } /* int ps_list_match */
 276
 277 /* add process entry to 'instances' of process 'name' (or refresh it) */
 278 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 279 {
 280         procstat_t *ps;
 281         procstat_entry_t *pse;
 282
 283         if (entry->id == 0)
 284                 return;
 285
 286         for (ps = list_head_g; ps != NULL; ps = ps->next)
 287         {
 288
 289                 if ((ps_list_match (name, cmdline, ps)) == 0)
 290                         continue;
 291
 292                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 293                         if ((pse->id == entry->id) || (pse->next == NULL))
 294                                 break;
 295
 296                 if ((pse == NULL) || (pse->id != entry->id))
 297                 {
 298                         procstat_entry_t *new;
 299
 300                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 301                         if (new == NULL)
 302                                 return;
 303                         memset (new, 0, sizeof (procstat_entry_t));
 304                         new->id = entry->id;
 305
 306                         if (pse == NULL)
 307                                 ps->instances = new;
 308                         else
 309                                 pse->next = new;
 310
 311                         pse = new;
 312                 }
 313
 314                 pse->age = 0;
 315                 pse->num_proc = entry->num_proc;
 316                 pse->num_lwp  = entry->num_lwp;
 317                 pse->vmem_rss = entry->vmem_rss;
 318
 319                 ps->num_proc += pse->num_proc;
 320                 ps->num_lwp  += pse->num_lwp;
 321                 ps->vmem_rss += pse->vmem_rss;
 322
 323                 if ((entry->vmem_minflt_counter == 0)
 324                                 && (entry->vmem_majflt_counter == 0))
 325                 {
 326                         pse->vmem_minflt_counter += entry->vmem_minflt;
 327                         pse->vmem_minflt = entry->vmem_minflt;
 328
 329                         pse->vmem_majflt_counter += entry->vmem_majflt;
 330                         pse->vmem_majflt = entry->vmem_majflt;
 331                 }
 332                 else
 333                 {
 334                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 335                         {
 336                                 pse->vmem_minflt = entry->vmem_minflt_counter
 337                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 338                         }
 339                         else
 340                         {
 341                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 342                         }
 343                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 344
 345                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 346                         {
 347                                 pse->vmem_majflt = entry->vmem_majflt_counter
 348                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 349                         }
 350                         else
 351                         {
 352                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 353                         }
 354                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 355                 }
 356
 357                 ps->vmem_minflt_counter += pse->vmem_minflt;
 358                 ps->vmem_majflt_counter += pse->vmem_majflt;
 359
 360                 if ((entry->cpu_user_counter == 0)
 361                                 && (entry->cpu_system_counter == 0))
 362                 {
 363                         pse->cpu_user_counter += entry->cpu_user;
 364                         pse->cpu_user = entry->cpu_user;
 365
 366                         pse->cpu_system_counter += entry->cpu_system;
 367                         pse->cpu_system = entry->cpu_system;
 368                 }
 369                 else
 370                 {
 371                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 372                         {
 373                                 pse->cpu_user = entry->cpu_user_counter
 374                                         + (ULONG_MAX - pse->cpu_user_counter);
 375                         }
 376                         else
 377                         {
 378                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 379                         }
 380                         pse->cpu_user_counter = entry->cpu_user_counter;
 381
 382                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 383                         {
 384                                 pse->cpu_system = entry->cpu_system_counter
 385                                         + (ULONG_MAX - pse->cpu_system_counter);
 386                         }
 387                         else
 388                         {
 389                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 390                         }
 391                         pse->cpu_system_counter = entry->cpu_system_counter;
 392                 }
 393
 394                 ps->cpu_user_counter   += pse->cpu_user;
 395                 ps->cpu_system_counter += pse->cpu_system;
 396         }
 397 }
 398
 399 /* remove old entries from instances of processes in list_head_g */
 400 static void ps_list_reset (void)
 401 {
 402         procstat_t *ps;
 403         procstat_entry_t *pse;
 404         procstat_entry_t *pse_prev;
 405
 406         for (ps = list_head_g; ps != NULL; ps = ps->next)
 407         {
 408                 ps->num_proc    = 0;
 409                 ps->num_lwp     = 0;
 410                 ps->vmem_rss    = 0;
 411
 412                 pse_prev = NULL;
 413                 pse = ps->instances;
 414                 while (pse != NULL)
 415                 {
 416                         if (pse->age > 10)
 417                         {
 418                                 DEBUG ("Removing this procstat entry cause it's too old: "
 419                                                 "id = %lu; name = %s;",
 420                                                 pse->id, ps->name);
 421
 422                                 if (pse_prev == NULL)
 423                                 {
 424                                         ps->instances = pse->next;
 425                                         free (pse);
 426                                         pse = ps->instances;
 427                                 }
 428                                 else
 429                                 {
 430                                         pse_prev->next = pse->next;
 431                                         free (pse);
 432                                         pse = pse_prev->next;
 433                                 }
 434                         }
 435                         else
 436                         {
 437                                 pse->age++;
 438                                 pse_prev = pse;
 439                                 pse = pse->next;
 440                         }
 441                 } /* while (pse != NULL) */
 442         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 443 }
 444
 445 /* put all pre-defined 'Process' names from config to list_head_g tree */
 446 static int ps_config (const char *key, const char *value)
 447 {
 448         if (strcasecmp (key, "Process") == 0)
 449         {
 450                 ps_list_register (value, NULL);
 451         }
 452         else if (strcasecmp (key, "ProcessMatch") == 0)
 453         {
 454                 char *new_val;
 455                 char *fields[3];
 456                 int fields_num;
 457
 458                 new_val = strdup (value);
 459                 if (new_val == NULL)
 460                         return (1);
 461                 fields_num = strsplit (new_val, fields,
 462                                 STATIC_ARRAY_SIZE (fields));
 463                 if (fields_num != 2)
 464                 {
 465                         sfree (new_val);
 466                         return (1);
 467                 }
 468                 ps_list_register (fields[0], fields[1]);
 469                 sfree (new_val);
 470         }
 471         else
 472         {
 473                 return (-1);
 474         }
 475
 476         return (0);
 477 }
 478
 479 static int ps_init (void)
 480 {
 481 #if HAVE_THREAD_INFO
 482         kern_return_t status;
 483
 484         port_host_self = mach_host_self ();
 485         port_task_self = mach_task_self ();
 486
 487         if (pset_list != NULL)
 488         {
 489                 vm_deallocate (port_task_self,
 490                                 (vm_address_t) pset_list,
 491                                 pset_list_len * sizeof (processor_set_t));
 492                 pset_list = NULL;
 493                 pset_list_len = 0;
 494         }
 495
 496         if ((status = host_processor_sets (port_host_self,
 497                                         &pset_list,
 498                                         &pset_list_len)) != KERN_SUCCESS)
 499         {
 500                 ERROR ("host_processor_sets failed: %s\n",
 501                                 mach_error_string (status));
 502                 pset_list = NULL;
 503                 pset_list_len = 0;
 504                 return (-1);
 505         }
 506 /* #endif HAVE_THREAD_INFO */
 507
 508 #elif KERNEL_LINUX
 509         pagesize_g = sysconf(_SC_PAGESIZE);
 510         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 511                         pagesize_g, CONFIG_HZ);
 512 #endif /* KERNEL_LINUX */
 513
 514         return (0);
 515 } /* int ps_init */
 516
 517 /* submit global state (e.g.: qty of zombies, running, etc..) */
 518 static void ps_submit_state (const char *state, double value)
 519 {
 520         value_t values[1];
 521         value_list_t vl = VALUE_LIST_INIT;
 522
 523         values[0].gauge = value;
 524
 525         vl.values = values;
 526         vl.values_len = 1;
 527         vl.time = time (NULL);
 528         strcpy (vl.host, hostname_g);
 529         strcpy (vl.plugin, "processes");
 530         strcpy (vl.plugin_instance, "");
 531         strcpy (vl.type, "ps_state");
 532         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 533
 534         plugin_dispatch_values (&vl);
 535 }
 536
 537 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 538 static void ps_submit_proc_list (procstat_t *ps)
 539 {
 540         value_t values[2];
 541         value_list_t vl = VALUE_LIST_INIT;
 542
 543         vl.values = values;
 544         vl.values_len = 2;
 545         vl.time = time (NULL);
 546         strcpy (vl.host, hostname_g);
 547         strcpy (vl.plugin, "processes");
 548         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 549
 550         strcpy (vl.type, "ps_rss");
 551         vl.values[0].gauge = ps->vmem_rss;
 552         vl.values_len = 1;
 553         plugin_dispatch_values (&vl);
 554
 555         strcpy (vl.type, "ps_cputime");
 556         vl.values[0].counter = ps->cpu_user_counter;
 557         vl.values[1].counter = ps->cpu_system_counter;
 558         vl.values_len = 2;
 559         plugin_dispatch_values (&vl);
 560
 561         strcpy (vl.type, "ps_count");
 562         vl.values[0].gauge = ps->num_proc;
 563         vl.values[1].gauge = ps->num_lwp;
 564         vl.values_len = 2;
 565         plugin_dispatch_values (&vl);
 566
 567         strcpy (vl.type, "ps_pagefaults");
 568         vl.values[0].counter = ps->vmem_minflt_counter;
 569         vl.values[1].counter = ps->vmem_majflt_counter;
 570         vl.values_len = 2;
 571         plugin_dispatch_values (&vl);
 572
 573         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 574                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 575                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 576                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 577                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 578                         ps->cpu_user_counter, ps->cpu_system_counter);
 579 } /* void ps_submit_proc_list */
 580
 581 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 582 #if KERNEL_LINUX
 583 static int *ps_read_tasks (int pid)
 584 {
 585         int *list = NULL;
 586         int  list_size = 1; /* size of allocated space, in elements */
 587         int  list_len = 0;  /* number of currently used elements */
 588
 589         char           dirname[64];
 590         DIR           *dh;
 591         struct dirent *ent;
 592
 593         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 594
 595         if ((dh = opendir (dirname)) == NULL)
 596         {
 597                 DEBUG ("Failed to open directory `%s'", dirname);
 598                 return (NULL);
 599         }
 600
 601         while ((ent = readdir (dh)) != NULL)
 602         {
 603                 if (!isdigit (ent->d_name[0]))
 604                         continue;
 605
 606                 if ((list_len + 1) >= list_size)
 607                 {
 608                         int *new_ptr;
 609                         int  new_size = 2 * list_size;
 610                         /* Comes in sizes: 2, 4, 8, 16, ... */
 611
 612                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 613                         if (new_ptr == NULL)
 614                         {
 615                                 if (list != NULL)
 616                                         free (list);
 617                                 ERROR ("processes plugin: "
 618                                                 "Failed to allocate more memory.");
 619                                 return (NULL);
 620                         }
 621
 622                         list = new_ptr;
 623                         list_size = new_size;
 624
 625                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 626                 }
 627
 628                 list[list_len] = atoi (ent->d_name);
 629                 if (list[list_len] != 0)
 630                         list_len++;
 631         }
 632
 633         closedir (dh);
 634
 635         if (list_len == 0)
 636                 return (NULL);
 637
 638         assert (list_len < list_size);
 639         assert (list[list_len] == 0);
 640
 641         return (list);
 642 } /* int *ps_read_tasks */
 643
 644 int ps_read_process (int pid, procstat_t *ps, char *state)
 645 {
 646         char  filename[64];
 647         char  buffer[1024];
 648         FILE *fh;
 649
 650         char *fields[64];
 651         char  fields_len;
 652
 653         int  *tasks;
 654         int   i;
 655
 656         int   ppid;
 657         int   name_len;
 658
 659         long long unsigned cpu_user_counter;
 660         long long unsigned cpu_system_counter;
 661         long long unsigned vmem_rss;
 662
 663         memset (ps, 0, sizeof (procstat_t));
 664
 665         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 666
 667         if ((fh = fopen (filename, "r")) == NULL)
 668                 return (-1);
 669
 670         if (fgets (buffer, 1024, fh) == NULL)
 671         {
 672                 fclose (fh);
 673                 return (-1);
 674         }
 675
 676         fclose (fh);
 677
 678         fields_len = strsplit (buffer, fields, 64);
 679         if (fields_len < 24)
 680         {
 681                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 682                                 " `%s' has only %i fields..",
 683                                 (int) pid, filename, fields_len);
 684                 return (-1);
 685         }
 686
 687         /* copy the name, strip brackets in the process */
 688         name_len = strlen (fields[1]) - 2;
 689         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 690         {
 691                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 692                 return (-1);
 693         }
 694         fields[1] = fields[1] + 1;
 695         fields[1][name_len] = '\0';
 696         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 697
 698         ppid = atoi (fields[3]);
 699
 700         *state = fields[2][0];
 701
 702         if (*state == 'Z')
 703         {
 704                 ps->num_lwp  = 0;
 705                 ps->num_proc = 0;
 706         }
 707         else if ((tasks = ps_read_tasks (pid)) == NULL)
 708         {
 709                 /* Kernel 2.4 or so */
 710                 ps->num_lwp  = 1;
 711                 ps->num_proc = 1;
 712         }
 713         else
 714         {
 715                 ps->num_lwp  = 0;
 716                 ps->num_proc = 1;
 717                 for (i = 0; tasks[i] != 0; i++)
 718                         ps->num_lwp++;
 719
 720                 free (tasks);
 721                 tasks = NULL;
 722         }
 723
 724         /* Leave the rest at zero if this is only a zombi */
 725         if (ps->num_proc == 0)
 726         {
 727                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 728                                 "name = %s;", pid, ps->name);
 729                 return (0);
 730         }
 731
 732         cpu_user_counter   = atoll (fields[13]);
 733         cpu_system_counter = atoll (fields[14]);
 734         vmem_rss = atoll (fields[23]);
 735         ps->vmem_minflt_counter = atol (fields[9]);
 736         ps->vmem_majflt_counter = atol (fields[11]);
 737
 738         /* Convert jiffies to useconds */
 739         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 740         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 741         vmem_rss = vmem_rss * pagesize_g;
 742
 743         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 744         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 745         ps->vmem_rss = (unsigned long) vmem_rss;
 746
 747         /* success */
 748         return (0);
 749 } /* int ps_read_process (...) */
 750 #endif /* KERNEL_LINUX */
 751
 752 #if HAVE_THREAD_INFO
 753 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 754 {
 755         int mib[4];
 756
 757         struct kinfo_proc kp;
 758         size_t            kp_size;
 759
 760         mib[0] = CTL_KERN;
 761         mib[1] = KERN_PROC;
 762         mib[2] = KERN_PROC_PID;
 763
 764         if (pid_for_task (t, pid) != KERN_SUCCESS)
 765                 return (-1);
 766         mib[3] = *pid;
 767
 768         kp_size = sizeof (kp);
 769         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 770                 return (-1);
 771
 772         if (name_max_len > (MAXCOMLEN + 1))
 773                 name_max_len = MAXCOMLEN + 1;
 774
 775         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 776         name[name_max_len - 1] = '\0';
 777
 778         DEBUG ("pid = %i; name = %s;", *pid, name);
 779
 780         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 781          * `top' does it, because it is a lot of work and only used when
 782          * debugging. -octo */
 783
 784         return (0);
 785 }
 786 #endif /* HAVE_THREAD_INFO */
 787 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 788
 789 /* do actual readings from kernel */
 790 static int ps_read (void)
 791 {
 792 #if HAVE_THREAD_INFO
 793         kern_return_t            status;
 794
 795         int                      pset;
 796         processor_set_t          port_pset_priv;
 797
 798         int                      task;
 799         task_array_t             task_list;
 800         mach_msg_type_number_t   task_list_len;
 801
 802         int                      task_pid;
 803         char                     task_name[MAXCOMLEN + 1];
 804
 805         int                      thread;
 806         thread_act_array_t       thread_list;
 807         mach_msg_type_number_t   thread_list_len;
 808         thread_basic_info_data_t thread_data;
 809         mach_msg_type_number_t   thread_data_len;
 810
 811         int running  = 0;
 812         int sleeping = 0;
 813         int zombies  = 0;
 814         int stopped  = 0;
 815         int blocked  = 0;
 816
 817         procstat_t *ps;
 818         procstat_entry_t pse;
 819
 820         ps_list_reset ();
 821
 822         /*
 823          * The Mach-concept is a little different from the traditional UNIX
 824          * concept: All the work is done in threads. Threads are contained in
 825          * `tasks'. Therefore, `task status' doesn't make much sense, since
 826          * it's actually a `thread status'.
 827          * Tasks are assigned to sets of processors, so that's where you go to
 828          * get a list.
 829          */
 830         for (pset = 0; pset < pset_list_len; pset++)
 831         {
 832                 if ((status = host_processor_set_priv (port_host_self,
 833                                                 pset_list[pset],
 834                                                 &port_pset_priv)) != KERN_SUCCESS)
 835                 {
 836                         ERROR ("host_processor_set_priv failed: %s\n",
 837                                         mach_error_string (status));
 838                         continue;
 839                 }
 840
 841                 if ((status = processor_set_tasks (port_pset_priv,
 842                                                 &task_list,
 843                                                 &task_list_len)) != KERN_SUCCESS)
 844                 {
 845                         ERROR ("processor_set_tasks failed: %s\n",
 846                                         mach_error_string (status));
 847                         mach_port_deallocate (port_task_self, port_pset_priv);
 848                         continue;
 849                 }
 850
 851                 for (task = 0; task < task_list_len; task++)
 852                 {
 853                         ps = NULL;
 854                         if (mach_get_task_name (task_list[task],
 855                                                 &task_pid,
 856                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 857                         {
 858                                 /* search for at least one match */
 859                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
 860                                         if (ps_list_match(task_name, NULL, ps) == 1) //!!! cmdline should be here instead of NULL
 861                                                 break;
 862                         }
 863
 864                         /* Collect more detailed statistics for this process */
 865                         if (ps != NULL)
 866                         {
 867                                 task_basic_info_data_t        task_basic_info;
 868                                 mach_msg_type_number_t        task_basic_info_len;
 869                                 task_events_info_data_t       task_events_info;
 870                                 mach_msg_type_number_t        task_events_info_len;
 871                                 task_absolutetime_info_data_t task_absolutetime_info;
 872                                 mach_msg_type_number_t        task_absolutetime_info_len;
 873
 874                                 memset (&pse, '\0', sizeof (pse));
 875                                 pse.id = task_pid;
 876
 877                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 878                                 status = task_info (task_list[task],
 879                                                 TASK_BASIC_INFO,
 880                                                 (task_info_t) &task_basic_info,
 881                                                 &task_basic_info_len);
 882                                 if (status != KERN_SUCCESS)
 883                                 {
 884                                         ERROR ("task_info failed: %s",
 885                                                         mach_error_string (status));
 886                                         continue; /* with next thread_list */
 887                                 }
 888
 889                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 890                                 status = task_info (task_list[task],
 891                                                 TASK_EVENTS_INFO,
 892                                                 (task_info_t) &task_events_info,
 893                                                 &task_events_info_len);
 894                                 if (status != KERN_SUCCESS)
 895                                 {
 896                                         ERROR ("task_info failed: %s",
 897                                                         mach_error_string (status));
 898                                         continue; /* with next thread_list */
 899                                 }
 900
 901                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 902                                 status = task_info (task_list[task],
 903                                                 TASK_ABSOLUTETIME_INFO,
 904                                                 (task_info_t) &task_absolutetime_info,
 905                                                 &task_absolutetime_info_len);
 906                                 if (status != KERN_SUCCESS)
 907                                 {
 908                                         ERROR ("task_info failed: %s",
 909                                                         mach_error_string (status));
 910                                         continue; /* with next thread_list */
 911                                 }
 912
 913                                 pse.num_proc++;
 914                                 pse.vmem_rss = task_basic_info.resident_size;
 915
 916                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 917                                 pse.vmem_majflt_counter = task_events_info.faults;
 918
 919                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 920                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 921                         }
 922
 923                         status = task_threads (task_list[task], &thread_list,
 924                                         &thread_list_len);
 925                         if (status != KERN_SUCCESS)
 926                         {
 927                                 /* Apple's `top' treats this case a zombie. It
 928                                  * makes sense to some extend: A `zombie'
 929                                  * thread is nonsense, since the task/process
 930                                  * is dead. */
 931                                 zombies++;
 932                                 DEBUG ("task_threads failed: %s",
 933                                                 mach_error_string (status));
 934                                 if (task_list[task] != port_task_self)
 935                                         mach_port_deallocate (port_task_self,
 936                                                         task_list[task]);
 937                                 continue; /* with next task_list */
 938                         }
 939
 940                         for (thread = 0; thread < thread_list_len; thread++)
 941                         {
 942                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 943                                 status = thread_info (thread_list[thread],
 944                                                 THREAD_BASIC_INFO,
 945                                                 (thread_info_t) &thread_data,
 946                                                 &thread_data_len);
 947                                 if (status != KERN_SUCCESS)
 948                                 {
 949                                         ERROR ("thread_info failed: %s",
 950                                                         mach_error_string (status));
 951                                         if (task_list[task] != port_task_self)
 952                                                 mach_port_deallocate (port_task_self,
 953                                                                 thread_list[thread]);
 954                                         continue; /* with next thread_list */
 955                                 }
 956
 957                                 if (ps != NULL)
 958                                         pse.num_lwp++;
 959
 960                                 switch (thread_data.run_state)
 961                                 {
 962                                         case TH_STATE_RUNNING:
 963                                                 running++;
 964                                                 break;
 965                                         case TH_STATE_STOPPED:
 966                                         /* What exactly is `halted'? */
 967                                         case TH_STATE_HALTED:
 968                                                 stopped++;
 969                                                 break;
 970                                         case TH_STATE_WAITING:
 971                                                 sleeping++;
 972                                                 break;
 973                                         case TH_STATE_UNINTERRUPTIBLE:
 974                                                 blocked++;
 975                                                 break;
 976                                         /* There is no `zombie' case here,
 977                                          * since there are no zombie-threads.
 978                                          * There's only zombie tasks, which are
 979                                          * handled above. */
 980                                         default:
 981                                                 WARNING ("Unknown thread status: %s",
 982                                                                 thread_data.run_state);
 983                                                 break;
 984                                 } /* switch (thread_data.run_state) */
 985
 986                                 if (task_list[task] != port_task_self)
 987                                 {
 988                                         status = mach_port_deallocate (port_task_self,
 989                                                         thread_list[thread]);
 990                                         if (status != KERN_SUCCESS)
 991                                                 ERROR ("mach_port_deallocate failed: %s",
 992                                                                 mach_error_string (status));
 993                                 }
 994                         } /* for (thread_list) */
 995
 996                         if ((status = vm_deallocate (port_task_self,
 997                                                         (vm_address_t) thread_list,
 998                                                         thread_list_len * sizeof (thread_act_t)))
 999                                         != KERN_SUCCESS)
1000                         {
1001                                 ERROR ("vm_deallocate failed: %s",
1002                                                 mach_error_string (status));
1003                         }
1004                         thread_list = NULL;
1005                         thread_list_len = 0;
1006
1007                         /* Only deallocate the task port, if it isn't our own.
1008                          * Don't know what would happen in that case, but this
1009                          * is what Apple's top does.. ;) */
1010                         if (task_list[task] != port_task_self)
1011                         {
1012                                 status = mach_port_deallocate (port_task_self,
1013                                                 task_list[task]);
1014                                 if (status != KERN_SUCCESS)
1015                                         ERROR ("mach_port_deallocate failed: %s",
1016                                                         mach_error_string (status));
1017                         }
1018
1019                         if (ps != NULL)
1020                                 ps_list_add (task_name, NULL, &pse); //!!! cmdline should be here instead of NULL
1021                 } /* for (task_list) */
1022
1023                 if ((status = vm_deallocate (port_task_self,
1024                                 (vm_address_t) task_list,
1025                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1026                 {
1027                         ERROR ("vm_deallocate failed: %s",
1028                                         mach_error_string (status));
1029                 }
1030                 task_list = NULL;
1031                 task_list_len = 0;
1032
1033                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1034                                 != KERN_SUCCESS)
1035                 {
1036                         ERROR ("mach_port_deallocate failed: %s",
1037                                         mach_error_string (status));
1038                 }
1039         } /* for (pset_list) */
1040
1041         ps_submit_state ("running", running);
1042         ps_submit_state ("sleeping", sleeping);
1043         ps_submit_state ("zombies", zombies);
1044         ps_submit_state ("stopped", stopped);
1045         ps_submit_state ("blocked", blocked);
1046
1047         for (ps = list_head_g; ps != NULL; ps = ps->next)
1048                 ps_submit_proc_list (ps);
1049 /* #endif HAVE_THREAD_INFO */
1050
1051 #elif KERNEL_LINUX
1052         int running  = 0;
1053         int sleeping = 0;
1054         int zombies  = 0;
1055         int stopped  = 0;
1056         int paging   = 0;
1057         int blocked  = 0;
1058
1059         struct dirent *ent;
1060         DIR           *proc;
1061         int            pid;
1062
1063         int        status;
1064         procstat_t ps;
1065         procstat_entry_t pse;
1066         char       state;
1067
1068         procstat_t *ps_ptr;
1069
1070         running = sleeping = zombies = stopped = paging = blocked = 0;
1071         ps_list_reset ();
1072
1073         if ((proc = opendir ("/proc")) == NULL)
1074         {
1075                 char errbuf[1024];
1076                 ERROR ("Cannot open `/proc': %s",
1077                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1078                 return (-1);
1079         }
1080
1081         while ((ent = readdir (proc)) != NULL)
1082         {
1083                 if (!isdigit (ent->d_name[0]))
1084                         continue;
1085
1086                 if ((pid = atoi (ent->d_name)) < 1)
1087                         continue;
1088
1089                 status = ps_read_process (pid, &ps, &state);
1090                 if (status != 0)
1091                 {
1092                         DEBUG ("ps_read_process failed: %i", status);
1093                         continue;
1094                 }
1095
1096                 pse.id       = pid;
1097                 pse.age      = 0;
1098
1099                 pse.num_proc = ps.num_proc;
1100                 pse.num_lwp  = ps.num_lwp;
1101                 pse.vmem_rss = ps.vmem_rss;
1102
1103                 pse.vmem_minflt = 0;
1104                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1105                 pse.vmem_majflt = 0;
1106                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1107
1108                 pse.cpu_user = 0;
1109                 pse.cpu_user_counter = ps.cpu_user_counter;
1110                 pse.cpu_system = 0;
1111                 pse.cpu_system_counter = ps.cpu_system_counter;
1112
1113                 switch (state)
1114                 {
1115                         case 'R': running++;  break;
1116                         case 'S': sleeping++; break;
1117                         case 'D': blocked++;  break;
1118                         case 'Z': zombies++;  break;
1119                         case 'T': stopped++;  break;
1120                         case 'W': paging++;   break;
1121                 }
1122
1123                 ps_list_add (ps.name, NULL, &pse); //!!! cmdline should be here instead of NULL
1124         }
1125
1126         closedir (proc);
1127
1128         ps_submit_state ("running",  running);
1129         ps_submit_state ("sleeping", sleeping);
1130         ps_submit_state ("zombies",  zombies);
1131         ps_submit_state ("stopped",  stopped);
1132         ps_submit_state ("paging",   paging);
1133         ps_submit_state ("blocked",  blocked);
1134
1135         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1136                 ps_submit_proc_list (ps_ptr);
1137 /* #endif KERNEL_LINUX */
1138
1139 #elif HAVE_LIBKVM
1140         int running  = 0;
1141         int sleeping = 0;
1142         int zombies  = 0;
1143         int stopped  = 0;
1144         int blocked  = 0;
1145         int idle     = 0;
1146         int wait     = 0;
1147
1148         kvm_t *kd;
1149         char errbuf[1024];
1150         char cmdline[ARG_MAX];
1151         struct kinfo_proc *procs;          /* array of processes */
1152         char ** argv;
1153         int count;                         /* returns number of processes */
1154         int i, j;
1155
1156         procstat_t *ps_ptr;
1157         procstat_entry_t pse;
1158
1159         ps_list_reset ();
1160
1161         /* Open the kvm interface, get a descriptor */
1162         if ((kd = kvm_open(NULL, NULL, NULL, 0, errbuf)) == NULL) {
1163                 ERROR ("Cannot open kvm interface: %s", errbuf);
1164                 return (0);
1165         }
1166
1167         /* Get the list of processes. */
1168         if ((procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count)) == NULL) {
1169                 kvm_close(kd);
1170                 ERROR ("Cannot get kvm processes list: %s", kvm_geterr(kd));
1171                 return (0);
1172         }
1173
1174         /* Iterate through the processes in kinfo_proc */
1175         for (i=0; i < count; i++) {
1176                 // retrieve the arguments
1177                 *cmdline = '\0';
1178                 argv = kvm_getargv(kd, (const struct kinfo_proc *) &(procs[i]), 0);
1179                 if (argv) {
1180                         j = 0;
1181                         while (argv[j] && strlen(cmdline) <= ARG_MAX) {
1182                                 if (j)
1183                                         strncat(cmdline, " ", 1);
1184                                 strncat(cmdline, argv[j], strlen(argv[j]));
1185                                 j++;
1186                         }
1187                 }
1188
1189                 pse.id       = procs[i].ki_pid;
1190                 pse.age      = 0;
1191
1192                 pse.num_proc = 1;
1193                 pse.num_lwp  = procs[i].ki_numthreads;
1194
1195                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1196                 pse.vmem_minflt = 0;
1197                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1198                 pse.vmem_majflt = 0;
1199                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1200
1201                 pse.cpu_user = 0;
1202                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec*1000 + procs[i].ki_rusage.ru_utime.tv_usec;
1203                 pse.cpu_system = 0;
1204                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec*1000 + procs[i].ki_rusage.ru_stime.tv_usec;
1205
1206                 switch (procs[i].ki_stat) {
1207                         case SSTOP:     stopped++;      break;
1208                         case SSLEEP:    sleeping++;     break;
1209                         case SRUN:      running++;      break;
1210                         case SIDL:      idle++;         break;
1211                         case SWAIT:     wait++;         break;
1212                         case SLOCK:     blocked++;      break;
1213                         case SZOMB:     zombies++;      break;
1214                 }
1215
1216                 ps_list_add (procs[i].ki_comm, cmdline, &pse);
1217         }
1218
1219         if (kd) kvm_close(kd);
1220
1221         ps_submit_state ("running",  running);
1222         ps_submit_state ("sleeping", sleeping);
1223         ps_submit_state ("zombies",  zombies);
1224         ps_submit_state ("stopped",  stopped);
1225         ps_submit_state ("blocked",  blocked);
1226         ps_submit_state ("idle",     idle);
1227         ps_submit_state ("wait",     wait);
1228
1229         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1230                 ps_submit_proc_list (ps_ptr);
1231
1232 #endif /* HAVE_LIBKVM */
1233
1234         return (0);
1235 } /* int ps_read */
1236
1237 void module_register (void)
1238 {
1239         plugin_register_config ("processes", ps_config,
1240                         config_keys, config_keys_num);
1241         plugin_register_init ("processes", ps_init);
1242         plugin_register_read ("processes", ps_read);
1243 } /* void module_register */