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 ((ps->re != NULL) && (regexec(ps->re, (strlen(cmdline)!=0)?cmdline:name, 0, NULL, 0) == 0))
 251                 return (1);
 252         if (strcmp (ps->name, name) == 0) {
 253                 return (1);
 254         }
 255         return (0);
 256 }
 257
 258 /* add process entry to 'instances' of process 'name' (or refresh it) */
 259 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 260 {
 261         procstat_t *ps;
 262         procstat_entry_t *pse;
 263
 264         if (entry->id == 0)
 265                 return;
 266
 267         for (ps = list_head_g; ps != NULL; ps = ps->next)
 268         {
 269
 270                 if ((ps_list_match (name, cmdline, ps)) == 0)
 271                         continue;
 272
 273                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 274                         if ((pse->id == entry->id) || (pse->next == NULL))
 275                                 break;
 276
 277                 if ((pse == NULL) || (pse->id != entry->id))
 278                 {
 279                         procstat_entry_t *new;
 280
 281                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 282                         if (new == NULL)
 283                                 return;
 284                         memset (new, 0, sizeof (procstat_entry_t));
 285                         new->id = entry->id;
 286
 287                         if (pse == NULL)
 288                                 ps->instances = new;
 289                         else
 290                                 pse->next = new;
 291
 292                         pse = new;
 293                 }
 294
 295                 pse->age = 0;
 296                 pse->num_proc = entry->num_proc;
 297                 pse->num_lwp  = entry->num_lwp;
 298                 pse->vmem_rss = entry->vmem_rss;
 299
 300                 ps->num_proc += pse->num_proc;
 301                 ps->num_lwp  += pse->num_lwp;
 302                 ps->vmem_rss += pse->vmem_rss;
 303
 304                 if ((entry->vmem_minflt_counter == 0)
 305                                 && (entry->vmem_majflt_counter == 0))
 306                 {
 307                         pse->vmem_minflt_counter += entry->vmem_minflt;
 308                         pse->vmem_minflt = entry->vmem_minflt;
 309
 310                         pse->vmem_majflt_counter += entry->vmem_majflt;
 311                         pse->vmem_majflt = entry->vmem_majflt;
 312                 }
 313                 else
 314                 {
 315                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 316                         {
 317                                 pse->vmem_minflt = entry->vmem_minflt_counter
 318                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 319                         }
 320                         else
 321                         {
 322                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 323                         }
 324                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 325
 326                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 327                         {
 328                                 pse->vmem_majflt = entry->vmem_majflt_counter
 329                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 330                         }
 331                         else
 332                         {
 333                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 334                         }
 335                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 336                 }
 337
 338                 ps->vmem_minflt_counter += pse->vmem_minflt;
 339                 ps->vmem_majflt_counter += pse->vmem_majflt;
 340
 341                 if ((entry->cpu_user_counter == 0)
 342                                 && (entry->cpu_system_counter == 0))
 343                 {
 344                         pse->cpu_user_counter += entry->cpu_user;
 345                         pse->cpu_user = entry->cpu_user;
 346
 347                         pse->cpu_system_counter += entry->cpu_system;
 348                         pse->cpu_system = entry->cpu_system;
 349                 }
 350                 else
 351                 {
 352                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 353                         {
 354                                 pse->cpu_user = entry->cpu_user_counter
 355                                         + (ULONG_MAX - pse->cpu_user_counter);
 356                         }
 357                         else
 358                         {
 359                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 360                         }
 361                         pse->cpu_user_counter = entry->cpu_user_counter;
 362
 363                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 364                         {
 365                                 pse->cpu_system = entry->cpu_system_counter
 366                                         + (ULONG_MAX - pse->cpu_system_counter);
 367                         }
 368                         else
 369                         {
 370                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 371                         }
 372                         pse->cpu_system_counter = entry->cpu_system_counter;
 373                 }
 374
 375                 ps->cpu_user_counter   += pse->cpu_user;
 376                 ps->cpu_system_counter += pse->cpu_system;
 377         }
 378 }
 379
 380 /* remove old entries from instances of processes in list_head_g */
 381 static void ps_list_reset (void)
 382 {
 383         procstat_t *ps;
 384         procstat_entry_t *pse;
 385         procstat_entry_t *pse_prev;
 386
 387         for (ps = list_head_g; ps != NULL; ps = ps->next)
 388         {
 389                 ps->num_proc    = 0;
 390                 ps->num_lwp     = 0;
 391                 ps->vmem_rss    = 0;
 392
 393                 pse_prev = NULL;
 394                 pse = ps->instances;
 395                 while (pse != NULL)
 396                 {
 397                         if (pse->age > 10)
 398                         {
 399                                 DEBUG ("Removing this procstat entry cause it's too old: "
 400                                                 "id = %lu; name = %s;",
 401                                                 pse->id, ps->name);
 402
 403                                 if (pse_prev == NULL)
 404                                 {
 405                                         ps->instances = pse->next;
 406                                         free (pse);
 407                                         pse = ps->instances;
 408                                 }
 409                                 else
 410                                 {
 411                                         pse_prev->next = pse->next;
 412                                         free (pse);
 413                                         pse = pse_prev->next;
 414                                 }
 415                         }
 416                         else
 417                         {
 418                                 pse->age++;
 419                                 pse_prev = pse;
 420                                 pse = pse->next;
 421                         }
 422                 } /* while (pse != NULL) */
 423         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 424 }
 425
 426 /* put all pre-defined 'Process' names from config to list_head_g tree */
 427 static int ps_config (const char *key, const char *value)
 428 {
 429         if (strcasecmp (key, "Process") == 0)
 430         {
 431                 ps_list_register (value, NULL);
 432         }
 433         else if (strcasecmp (key, "ProcessMatch") == 0)
 434         {
 435                 char *new_val;
 436                 char *fields[3];
 437                 int fields_num;
 438
 439                 new_val = strdup (value);
 440                 if (new_val == NULL)
 441                         return (1);
 442                 fields_num = strsplit (new_val, fields,
 443                                 STATIC_ARRAY_SIZE (fields));
 444                 if (fields_num != 2)
 445                 {
 446                         sfree (new_val);
 447                         return (1);
 448                 }
 449                 ps_list_register (fields[0], fields[1]);
 450                 sfree (new_val);
 451         }
 452         else
 453         {
 454                 return (-1);
 455         }
 456
 457         return (0);
 458 }
 459
 460 static int ps_init (void)
 461 {
 462 #if HAVE_THREAD_INFO
 463         kern_return_t status;
 464
 465         port_host_self = mach_host_self ();
 466         port_task_self = mach_task_self ();
 467
 468         if (pset_list != NULL)
 469         {
 470                 vm_deallocate (port_task_self,
 471                                 (vm_address_t) pset_list,
 472                                 pset_list_len * sizeof (processor_set_t));
 473                 pset_list = NULL;
 474                 pset_list_len = 0;
 475         }
 476
 477         if ((status = host_processor_sets (port_host_self,
 478                                         &pset_list,
 479                                         &pset_list_len)) != KERN_SUCCESS)
 480         {
 481                 ERROR ("host_processor_sets failed: %s\n",
 482                                 mach_error_string (status));
 483                 pset_list = NULL;
 484                 pset_list_len = 0;
 485                 return (-1);
 486         }
 487 /* #endif HAVE_THREAD_INFO */
 488
 489 #elif KERNEL_LINUX
 490         pagesize_g = sysconf(_SC_PAGESIZE);
 491         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 492                         pagesize_g, CONFIG_HZ);
 493 #endif /* KERNEL_LINUX */
 494
 495         return (0);
 496 } /* int ps_init */
 497
 498 /* submit global state (e.g.: qty of zombies, running, etc..) */
 499 static void ps_submit_state (const char *state, double value)
 500 {
 501         value_t values[1];
 502         value_list_t vl = VALUE_LIST_INIT;
 503
 504         values[0].gauge = value;
 505
 506         vl.values = values;
 507         vl.values_len = 1;
 508         vl.time = time (NULL);
 509         strcpy (vl.host, hostname_g);
 510         strcpy (vl.plugin, "processes");
 511         strcpy (vl.plugin_instance, "");
 512         strcpy (vl.type, "ps_state");
 513         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 514
 515         plugin_dispatch_values (&vl);
 516 }
 517
 518 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 519 static void ps_submit_proc_list (procstat_t *ps)
 520 {
 521         value_t values[2];
 522         value_list_t vl = VALUE_LIST_INIT;
 523
 524         vl.values = values;
 525         vl.values_len = 2;
 526         vl.time = time (NULL);
 527         strcpy (vl.host, hostname_g);
 528         strcpy (vl.plugin, "processes");
 529         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 530
 531         strcpy (vl.type, "ps_rss");
 532         vl.values[0].gauge = ps->vmem_rss;
 533         vl.values_len = 1;
 534         plugin_dispatch_values (&vl);
 535
 536         strcpy (vl.type, "ps_cputime");
 537         vl.values[0].counter = ps->cpu_user_counter;
 538         vl.values[1].counter = ps->cpu_system_counter;
 539         vl.values_len = 2;
 540         plugin_dispatch_values (&vl);
 541
 542         strcpy (vl.type, "ps_count");
 543         vl.values[0].gauge = ps->num_proc;
 544         vl.values[1].gauge = ps->num_lwp;
 545         vl.values_len = 2;
 546         plugin_dispatch_values (&vl);
 547
 548         strcpy (vl.type, "ps_pagefaults");
 549         vl.values[0].counter = ps->vmem_minflt_counter;
 550         vl.values[1].counter = ps->vmem_majflt_counter;
 551         vl.values_len = 2;
 552         plugin_dispatch_values (&vl);
 553
 554         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 555                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 556                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 557                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 558                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 559                         ps->cpu_user_counter, ps->cpu_system_counter);
 560 } /* void ps_submit_proc_list */
 561
 562 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 563 #if KERNEL_LINUX
 564 static int *ps_read_tasks (int pid)
 565 {
 566         int *list = NULL;
 567         int  list_size = 1; /* size of allocated space, in elements */
 568         int  list_len = 0;  /* number of currently used elements */
 569
 570         char           dirname[64];
 571         DIR           *dh;
 572         struct dirent *ent;
 573
 574         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 575
 576         if ((dh = opendir (dirname)) == NULL)
 577         {
 578                 DEBUG ("Failed to open directory `%s'", dirname);
 579                 return (NULL);
 580         }
 581
 582         while ((ent = readdir (dh)) != NULL)
 583         {
 584                 if (!isdigit (ent->d_name[0]))
 585                         continue;
 586
 587                 if ((list_len + 1) >= list_size)
 588                 {
 589                         int *new_ptr;
 590                         int  new_size = 2 * list_size;
 591                         /* Comes in sizes: 2, 4, 8, 16, ... */
 592
 593                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 594                         if (new_ptr == NULL)
 595                         {
 596                                 if (list != NULL)
 597                                         free (list);
 598                                 ERROR ("processes plugin: "
 599                                                 "Failed to allocate more memory.");
 600                                 return (NULL);
 601                         }
 602
 603                         list = new_ptr;
 604                         list_size = new_size;
 605
 606                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 607                 }
 608
 609                 list[list_len] = atoi (ent->d_name);
 610                 if (list[list_len] != 0)
 611                         list_len++;
 612         }
 613
 614         closedir (dh);
 615
 616         if (list_len == 0)
 617                 return (NULL);
 618
 619         assert (list_len < list_size);
 620         assert (list[list_len] == 0);
 621
 622         return (list);
 623 } /* int *ps_read_tasks */
 624
 625 int ps_read_process (int pid, procstat_t *ps, char *state)
 626 {
 627         char  filename[64];
 628         char  buffer[1024];
 629         FILE *fh;
 630
 631         char *fields[64];
 632         char  fields_len;
 633
 634         int  *tasks;
 635         int   i;
 636
 637         int   ppid;
 638         int   name_len;
 639
 640         long long unsigned cpu_user_counter;
 641         long long unsigned cpu_system_counter;
 642         long long unsigned vmem_rss;
 643
 644         memset (ps, 0, sizeof (procstat_t));
 645
 646         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 647
 648         if ((fh = fopen (filename, "r")) == NULL)
 649                 return (-1);
 650
 651         if (fgets (buffer, 1024, fh) == NULL)
 652         {
 653                 fclose (fh);
 654                 return (-1);
 655         }
 656
 657         fclose (fh);
 658
 659         fields_len = strsplit (buffer, fields, 64);
 660         if (fields_len < 24)
 661         {
 662                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 663                                 " `%s' has only %i fields..",
 664                                 (int) pid, filename, fields_len);
 665                 return (-1);
 666         }
 667
 668         /* copy the name, strip brackets in the process */
 669         name_len = strlen (fields[1]) - 2;
 670         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 671         {
 672                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 673                 return (-1);
 674         }
 675         fields[1] = fields[1] + 1;
 676         fields[1][name_len] = '\0';
 677         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 678
 679         ppid = atoi (fields[3]);
 680
 681         *state = fields[2][0];
 682
 683         if (*state == 'Z')
 684         {
 685                 ps->num_lwp  = 0;
 686                 ps->num_proc = 0;
 687         }
 688         else if ((tasks = ps_read_tasks (pid)) == NULL)
 689         {
 690                 /* Kernel 2.4 or so */
 691                 ps->num_lwp  = 1;
 692                 ps->num_proc = 1;
 693         }
 694         else
 695         {
 696                 ps->num_lwp  = 0;
 697                 ps->num_proc = 1;
 698                 for (i = 0; tasks[i] != 0; i++)
 699                         ps->num_lwp++;
 700
 701                 free (tasks);
 702                 tasks = NULL;
 703         }
 704
 705         /* Leave the rest at zero if this is only a zombi */
 706         if (ps->num_proc == 0)
 707         {
 708                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 709                                 "name = %s;", pid, ps->name);
 710                 return (0);
 711         }
 712
 713         cpu_user_counter   = atoll (fields[13]);
 714         cpu_system_counter = atoll (fields[14]);
 715         vmem_rss = atoll (fields[23]);
 716         ps->vmem_minflt_counter = atol (fields[9]);
 717         ps->vmem_majflt_counter = atol (fields[11]);
 718
 719         /* Convert jiffies to useconds */
 720         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 721         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 722         vmem_rss = vmem_rss * pagesize_g;
 723
 724         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 725         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 726         ps->vmem_rss = (unsigned long) vmem_rss;
 727
 728         /* success */
 729         return (0);
 730 } /* int ps_read_process (...) */
 731 #endif /* KERNEL_LINUX */
 732
 733 #if HAVE_THREAD_INFO
 734 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 735 {
 736         int mib[4];
 737
 738         struct kinfo_proc kp;
 739         size_t            kp_size;
 740
 741         mib[0] = CTL_KERN;
 742         mib[1] = KERN_PROC;
 743         mib[2] = KERN_PROC_PID;
 744
 745         if (pid_for_task (t, pid) != KERN_SUCCESS)
 746                 return (-1);
 747         mib[3] = *pid;
 748
 749         kp_size = sizeof (kp);
 750         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 751                 return (-1);
 752
 753         if (name_max_len > (MAXCOMLEN + 1))
 754                 name_max_len = MAXCOMLEN + 1;
 755
 756         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 757         name[name_max_len - 1] = '\0';
 758
 759         DEBUG ("pid = %i; name = %s;", *pid, name);
 760
 761         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 762          * `top' does it, because it is a lot of work and only used when
 763          * debugging. -octo */
 764
 765         return (0);
 766 }
 767 #endif /* HAVE_THREAD_INFO */
 768 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 769
 770 /* do actual readings from kernel */
 771 static int ps_read (void)
 772 {
 773 #if HAVE_THREAD_INFO
 774         kern_return_t            status;
 775
 776         int                      pset;
 777         processor_set_t          port_pset_priv;
 778
 779         int                      task;
 780         task_array_t             task_list;
 781         mach_msg_type_number_t   task_list_len;
 782
 783         int                      task_pid;
 784         char                     task_name[MAXCOMLEN + 1];
 785
 786         int                      thread;
 787         thread_act_array_t       thread_list;
 788         mach_msg_type_number_t   thread_list_len;
 789         thread_basic_info_data_t thread_data;
 790         mach_msg_type_number_t   thread_data_len;
 791
 792         int running  = 0;
 793         int sleeping = 0;
 794         int zombies  = 0;
 795         int stopped  = 0;
 796         int blocked  = 0;
 797
 798         procstat_t *ps;
 799         procstat_entry_t pse;
 800
 801         ps_list_reset ();
 802
 803         /*
 804          * The Mach-concept is a little different from the traditional UNIX
 805          * concept: All the work is done in threads. Threads are contained in
 806          * `tasks'. Therefore, `task status' doesn't make much sense, since
 807          * it's actually a `thread status'.
 808          * Tasks are assigned to sets of processors, so that's where you go to
 809          * get a list.
 810          */
 811         for (pset = 0; pset < pset_list_len; pset++)
 812         {
 813                 if ((status = host_processor_set_priv (port_host_self,
 814                                                 pset_list[pset],
 815                                                 &port_pset_priv)) != KERN_SUCCESS)
 816                 {
 817                         ERROR ("host_processor_set_priv failed: %s\n",
 818                                         mach_error_string (status));
 819                         continue;
 820                 }
 821
 822                 if ((status = processor_set_tasks (port_pset_priv,
 823                                                 &task_list,
 824                                                 &task_list_len)) != KERN_SUCCESS)
 825                 {
 826                         ERROR ("processor_set_tasks failed: %s\n",
 827                                         mach_error_string (status));
 828                         mach_port_deallocate (port_task_self, port_pset_priv);
 829                         continue;
 830                 }
 831
 832                 for (task = 0; task < task_list_len; task++)
 833                 {
 834                         ps = NULL;
 835                         if (mach_get_task_name (task_list[task],
 836                                                 &task_pid,
 837                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 838                         {
 839                                 /* search for at least one match */
 840                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
 841                                         if (ps_list_match(task_name, NULL, ps) == 1) //!!! cmdline should be here instead of NULL
 842                                                 break;
 843                         }
 844
 845                         /* Collect more detailed statistics for this process */
 846                         if (ps != NULL)
 847                         {
 848                                 task_basic_info_data_t        task_basic_info;
 849                                 mach_msg_type_number_t        task_basic_info_len;
 850                                 task_events_info_data_t       task_events_info;
 851                                 mach_msg_type_number_t        task_events_info_len;
 852                                 task_absolutetime_info_data_t task_absolutetime_info;
 853                                 mach_msg_type_number_t        task_absolutetime_info_len;
 854
 855                                 memset (&pse, '\0', sizeof (pse));
 856                                 pse.id = task_pid;
 857
 858                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 859                                 status = task_info (task_list[task],
 860                                                 TASK_BASIC_INFO,
 861                                                 (task_info_t) &task_basic_info,
 862                                                 &task_basic_info_len);
 863                                 if (status != KERN_SUCCESS)
 864                                 {
 865                                         ERROR ("task_info failed: %s",
 866                                                         mach_error_string (status));
 867                                         continue; /* with next thread_list */
 868                                 }
 869
 870                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 871                                 status = task_info (task_list[task],
 872                                                 TASK_EVENTS_INFO,
 873                                                 (task_info_t) &task_events_info,
 874                                                 &task_events_info_len);
 875                                 if (status != KERN_SUCCESS)
 876                                 {
 877                                         ERROR ("task_info failed: %s",
 878                                                         mach_error_string (status));
 879                                         continue; /* with next thread_list */
 880                                 }
 881
 882                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 883                                 status = task_info (task_list[task],
 884                                                 TASK_ABSOLUTETIME_INFO,
 885                                                 (task_info_t) &task_absolutetime_info,
 886                                                 &task_absolutetime_info_len);
 887                                 if (status != KERN_SUCCESS)
 888                                 {
 889                                         ERROR ("task_info failed: %s",
 890                                                         mach_error_string (status));
 891                                         continue; /* with next thread_list */
 892                                 }
 893
 894                                 pse.num_proc++;
 895                                 pse.vmem_rss = task_basic_info.resident_size;
 896
 897                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 898                                 pse.vmem_majflt_counter = task_events_info.faults;
 899
 900                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 901                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 902                         }
 903
 904                         status = task_threads (task_list[task], &thread_list,
 905                                         &thread_list_len);
 906                         if (status != KERN_SUCCESS)
 907                         {
 908                                 /* Apple's `top' treats this case a zombie. It
 909                                  * makes sense to some extend: A `zombie'
 910                                  * thread is nonsense, since the task/process
 911                                  * is dead. */
 912                                 zombies++;
 913                                 DEBUG ("task_threads failed: %s",
 914                                                 mach_error_string (status));
 915                                 if (task_list[task] != port_task_self)
 916                                         mach_port_deallocate (port_task_self,
 917                                                         task_list[task]);
 918                                 continue; /* with next task_list */
 919                         }
 920
 921                         for (thread = 0; thread < thread_list_len; thread++)
 922                         {
 923                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 924                                 status = thread_info (thread_list[thread],
 925                                                 THREAD_BASIC_INFO,
 926                                                 (thread_info_t) &thread_data,
 927                                                 &thread_data_len);
 928                                 if (status != KERN_SUCCESS)
 929                                 {
 930                                         ERROR ("thread_info failed: %s",
 931                                                         mach_error_string (status));
 932                                         if (task_list[task] != port_task_self)
 933                                                 mach_port_deallocate (port_task_self,
 934                                                                 thread_list[thread]);
 935                                         continue; /* with next thread_list */
 936                                 }
 937
 938                                 if (ps != NULL)
 939                                         pse.num_lwp++;
 940
 941                                 switch (thread_data.run_state)
 942                                 {
 943                                         case TH_STATE_RUNNING:
 944                                                 running++;
 945                                                 break;
 946                                         case TH_STATE_STOPPED:
 947                                         /* What exactly is `halted'? */
 948                                         case TH_STATE_HALTED:
 949                                                 stopped++;
 950                                                 break;
 951                                         case TH_STATE_WAITING:
 952                                                 sleeping++;
 953                                                 break;
 954                                         case TH_STATE_UNINTERRUPTIBLE:
 955                                                 blocked++;
 956                                                 break;
 957                                         /* There is no `zombie' case here,
 958                                          * since there are no zombie-threads.
 959                                          * There's only zombie tasks, which are
 960                                          * handled above. */
 961                                         default:
 962                                                 WARNING ("Unknown thread status: %s",
 963                                                                 thread_data.run_state);
 964                                                 break;
 965                                 } /* switch (thread_data.run_state) */
 966
 967                                 if (task_list[task] != port_task_self)
 968                                 {
 969                                         status = mach_port_deallocate (port_task_self,
 970                                                         thread_list[thread]);
 971                                         if (status != KERN_SUCCESS)
 972                                                 ERROR ("mach_port_deallocate failed: %s",
 973                                                                 mach_error_string (status));
 974                                 }
 975                         } /* for (thread_list) */
 976
 977                         if ((status = vm_deallocate (port_task_self,
 978                                                         (vm_address_t) thread_list,
 979                                                         thread_list_len * sizeof (thread_act_t)))
 980                                         != KERN_SUCCESS)
 981                         {
 982                                 ERROR ("vm_deallocate failed: %s",
 983                                                 mach_error_string (status));
 984                         }
 985                         thread_list = NULL;
 986                         thread_list_len = 0;
 987
 988                         /* Only deallocate the task port, if it isn't our own.
 989                          * Don't know what would happen in that case, but this
 990                          * is what Apple's top does.. ;) */
 991                         if (task_list[task] != port_task_self)
 992                         {
 993                                 status = mach_port_deallocate (port_task_self,
 994                                                 task_list[task]);
 995                                 if (status != KERN_SUCCESS)
 996                                         ERROR ("mach_port_deallocate failed: %s",
 997                                                         mach_error_string (status));
 998                         }
 999
1000                         if (ps != NULL)
1001                                 ps_list_add (task_name, NULL, &pse); //!!! cmdline should be here instead of NULL
1002                 } /* for (task_list) */
1003
1004                 if ((status = vm_deallocate (port_task_self,
1005                                 (vm_address_t) task_list,
1006                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1007                 {
1008                         ERROR ("vm_deallocate failed: %s",
1009                                         mach_error_string (status));
1010                 }
1011                 task_list = NULL;
1012                 task_list_len = 0;
1013
1014                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1015                                 != KERN_SUCCESS)
1016                 {
1017                         ERROR ("mach_port_deallocate failed: %s",
1018                                         mach_error_string (status));
1019                 }
1020         } /* for (pset_list) */
1021
1022         ps_submit_state ("running", running);
1023         ps_submit_state ("sleeping", sleeping);
1024         ps_submit_state ("zombies", zombies);
1025         ps_submit_state ("stopped", stopped);
1026         ps_submit_state ("blocked", blocked);
1027
1028         for (ps = list_head_g; ps != NULL; ps = ps->next)
1029                 ps_submit_proc_list (ps);
1030 /* #endif HAVE_THREAD_INFO */
1031
1032 #elif KERNEL_LINUX
1033         int running  = 0;
1034         int sleeping = 0;
1035         int zombies  = 0;
1036         int stopped  = 0;
1037         int paging   = 0;
1038         int blocked  = 0;
1039
1040         struct dirent *ent;
1041         DIR           *proc;
1042         int            pid;
1043
1044         int        status;
1045         procstat_t ps;
1046         procstat_entry_t pse;
1047         char       state;
1048
1049         procstat_t *ps_ptr;
1050
1051         running = sleeping = zombies = stopped = paging = blocked = 0;
1052         ps_list_reset ();
1053
1054         if ((proc = opendir ("/proc")) == NULL)
1055         {
1056                 char errbuf[1024];
1057                 ERROR ("Cannot open `/proc': %s",
1058                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1059                 return (-1);
1060         }
1061
1062         while ((ent = readdir (proc)) != NULL)
1063         {
1064                 if (!isdigit (ent->d_name[0]))
1065                         continue;
1066
1067                 if ((pid = atoi (ent->d_name)) < 1)
1068                         continue;
1069
1070                 status = ps_read_process (pid, &ps, &state);
1071                 if (status != 0)
1072                 {
1073                         DEBUG ("ps_read_process failed: %i", status);
1074                         continue;
1075                 }
1076
1077                 pse.id       = pid;
1078                 pse.age      = 0;
1079
1080                 pse.num_proc = ps.num_proc;
1081                 pse.num_lwp  = ps.num_lwp;
1082                 pse.vmem_rss = ps.vmem_rss;
1083
1084                 pse.vmem_minflt = 0;
1085                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1086                 pse.vmem_majflt = 0;
1087                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1088
1089                 pse.cpu_user = 0;
1090                 pse.cpu_user_counter = ps.cpu_user_counter;
1091                 pse.cpu_system = 0;
1092                 pse.cpu_system_counter = ps.cpu_system_counter;
1093
1094                 switch (state)
1095                 {
1096                         case 'R': running++;  break;
1097                         case 'S': sleeping++; break;
1098                         case 'D': blocked++;  break;
1099                         case 'Z': zombies++;  break;
1100                         case 'T': stopped++;  break;
1101                         case 'W': paging++;   break;
1102                 }
1103
1104                 ps_list_add (ps.name, NULL, &pse); //!!! cmdline should be here instead of NULL
1105         }
1106
1107         closedir (proc);
1108
1109         ps_submit_state ("running",  running);
1110         ps_submit_state ("sleeping", sleeping);
1111         ps_submit_state ("zombies",  zombies);
1112         ps_submit_state ("stopped",  stopped);
1113         ps_submit_state ("paging",   paging);
1114         ps_submit_state ("blocked",  blocked);
1115
1116         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1117                 ps_submit_proc_list (ps_ptr);
1118 /* #endif KERNEL_LINUX */
1119
1120 #elif HAVE_LIBKVM
1121         int running  = 0;
1122         int sleeping = 0;
1123         int zombies  = 0;
1124         int stopped  = 0;
1125         int blocked  = 0;
1126         int idle     = 0;
1127         int wait     = 0;
1128
1129         kvm_t *kd;
1130         char errbuf[1024];
1131         char cmdline[ARG_MAX];
1132         struct kinfo_proc *procs;          /* array of processes */
1133         char ** argv;
1134         int count;                         /* returns number of processes */
1135         int i, j;
1136
1137         procstat_t *ps_ptr;
1138         procstat_entry_t pse;
1139
1140         ps_list_reset ();
1141
1142         /* Open the kvm interface, get a descriptor */
1143         if ((kd = kvm_open(NULL, NULL, NULL, 0, errbuf)) == NULL) {
1144                 ERROR ("Cannot open kvm interface: %s", errbuf);
1145                 return (0);
1146         }
1147
1148         /* Get the list of processes. */
1149         if ((procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count)) == NULL) {
1150                 kvm_close(kd);
1151                 ERROR ("Cannot get kvm processes list: %s", kvm_geterr(kd));
1152                 return (0);
1153         }
1154
1155         /* Iterate through the processes in kinfo_proc */
1156         for (i=0; i < count; i++) {
1157                 // retrieve the arguments
1158                 *cmdline = '\0';
1159                 argv = kvm_getargv(kd, (const struct kinfo_proc *) &(procs[i]), 0);
1160                 if (argv) {
1161                         j = 0;
1162                         while (argv[j] && strlen(cmdline) <= ARG_MAX) {
1163                                 if (j)
1164                                         strncat(cmdline, " ", 1);
1165                                 strncat(cmdline, argv[j], strlen(argv[j]));
1166                                 j++;
1167                         }
1168                 }
1169
1170                 pse.id       = procs[i].ki_pid;
1171                 pse.age      = 0;
1172
1173                 pse.num_proc = 1;
1174                 pse.num_lwp  = procs[i].ki_numthreads;
1175
1176                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1177                 pse.vmem_minflt = 0;
1178                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1179                 pse.vmem_majflt = 0;
1180                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1181
1182                 pse.cpu_user = 0;
1183                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec*1000 + procs[i].ki_rusage.ru_utime.tv_usec;
1184                 pse.cpu_system = 0;
1185                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec*1000 + procs[i].ki_rusage.ru_stime.tv_usec;
1186
1187                 switch (procs[i].ki_stat) {
1188                         case SSTOP:     stopped++;      break;
1189                         case SSLEEP:    sleeping++;     break;
1190                         case SRUN:      running++;      break;
1191                         case SIDL:      idle++;         break;
1192                         case SWAIT:     wait++;         break;
1193                         case SLOCK:     blocked++;      break;
1194                         case SZOMB:     zombies++;      break;
1195                 }
1196
1197                 ps_list_add (procs[i].ki_comm, cmdline, &pse);
1198         }
1199
1200         if (kd) kvm_close(kd);
1201
1202         ps_submit_state ("running",  running);
1203         ps_submit_state ("sleeping", sleeping);
1204         ps_submit_state ("zombies",  zombies);
1205         ps_submit_state ("stopped",  stopped);
1206         ps_submit_state ("blocked",  blocked);
1207         ps_submit_state ("idle",     idle);
1208         ps_submit_state ("wait",     wait);
1209
1210         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1211                 ps_submit_proc_list (ps_ptr);
1212
1213 #endif /* HAVE_LIBKVM */
1214
1215         return (0);
1216 } /* int ps_read */
1217
1218 void module_register (void)
1219 {
1220         plugin_register_config ("processes", ps_config,
1221                         config_keys, config_keys_num);
1222         plugin_register_init ("processes", ps_init);
1223         plugin_register_read ("processes", ps_read);
1224 } /* void module_register */