src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006  Florian Forster (Mach code)
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  *
  20  * Authors:
  21  *   Lyonel Vincent <lyonel at ezix.org>
  22  *   Florian octo Forster <octo at verplant.org>
  23  **/
  24
  25 #include "collectd.h"
  26 #include "common.h"
  27 #include "plugin.h"
  28 #include "utils_debug.h"
  29 #include "configfile.h"
  30
  31 /* Include header files for the mach system, if they exist.. */
  32 #if HAVE_THREAD_INFO
  33 #  if HAVE_MACH_MACH_INIT_H
  34 #    include <mach/mach_init.h>
  35 #  endif
  36 #  if HAVE_MACH_HOST_PRIV_H
  37 #    include <mach/host_priv.h>
  38 #  endif
  39 #  if HAVE_MACH_MACH_ERROR_H
  40 #    include <mach/mach_error.h>
  41 #  endif
  42 #  if HAVE_MACH_MACH_HOST_H
  43 #    include <mach/mach_host.h>
  44 #  endif
  45 #  if HAVE_MACH_MACH_PORT_H
  46 #    include <mach/mach_port.h>
  47 #  endif
  48 #  if HAVE_MACH_MACH_TYPES_H
  49 #    include <mach/mach_types.h>
  50 #  endif
  51 #  if HAVE_MACH_MESSAGE_H
  52 #    include <mach/message.h>
  53 #  endif
  54 #  if HAVE_MACH_PROCESSOR_SET_H
  55 #    include <mach/processor_set.h>
  56 #  endif
  57 #  if HAVE_MACH_TASK_H
  58 #    include <mach/task.h>
  59 #  endif
  60 #  if HAVE_MACH_THREAD_ACT_H
  61 #    include <mach/thread_act.h>
  62 #  endif
  63 #  if HAVE_MACH_VM_REGION_H
  64 #    include <mach/vm_region.h>
  65 #  endif
  66 #  if HAVE_MACH_VM_MAP_H
  67 #    include <mach/vm_map.h>
  68 #  endif
  69 #  if HAVE_MACH_VM_PROT_H
  70 #    include <mach/vm_prot.h>
  71 #  endif
  72 /* #endif HAVE_THREAD_INFO */
  73
  74 #elif KERNEL_LINUX
  75 #  if HAVE_LINUX_CONFIG_H
  76 #    include <linux/config.h>
  77 #  endif
  78 #  ifndef CONFIG_HZ
  79 #    define CONFIG_HZ 100
  80 #  endif
  81 #endif /* KERNEL_LINUX */
  82
  83 #define MODULE_NAME "processes"
  84
  85 #if HAVE_THREAD_INFO || KERNEL_LINUX
  86 # define PROCESSES_HAVE_READ 1
  87 #else
  88 # define PROCESSES_HAVE_READ 0
  89 #endif
  90
  91 #define BUFSIZE 256
  92
  93 static char *processes_file = "processes.rrd";
  94 static char *processes_ds_def[] =
  95 {
  96         "DS:running:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  97         "DS:sleeping:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  98         "DS:zombies:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  99         "DS:stopped:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 100         "DS:paging:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 101         "DS:blocked:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 102         NULL
 103 };
 104 static int processes_ds_num = 6;
 105
 106 static char *ps_rss_file = "processes/ps_rss-%s.rrd";
 107 static char *ps_rss_ds_def[] =
 108 {
 109         /* max = 2^63 - 1 */
 110         "DS:byte:GAUGE:"COLLECTD_HEARTBEAT":0:9223372036854775807",
 111         NULL
 112 };
 113 static int ps_rss_ds_num = 1;
 114
 115 static char *config_keys[] =
 116 {
 117         "CollectName",
 118         NULL
 119 };
 120 static int config_keys_num = 1;
 121
 122 typedef struct procstat
 123 {
 124 #define PROCSTAT_NAME_LEN 256
 125         char               name[PROCSTAT_NAME_LEN];
 126         unsigned int       num_proc;
 127         unsigned int       num_lwp;
 128         unsigned long      vmem_rss;
 129         unsigned long      vmem_minflt;
 130         unsigned long      vmem_majflt;
 131         unsigned long long cpu_user;
 132         unsigned long long cpu_system;
 133         struct procstat   *next;
 134 } procstat_t;
 135
 136 static procstat_t *list_head_g = NULL;
 137
 138 #if HAVE_THREAD_INFO
 139 static mach_port_t port_host_self;
 140 static mach_port_t port_task_self;
 141
 142 static processor_set_name_array_t pset_list;
 143 static mach_msg_type_number_t     pset_list_len;
 144 /* #endif HAVE_THREAD_INFO */
 145
 146 #elif KERNEL_LINUX
 147 static long pagesize_g;
 148 #endif /* KERNEL_LINUX */
 149
 150 static procstat_t *ps_list_append (procstat_t *list, const char *name)
 151 {
 152         procstat_t *new;
 153         procstat_t *ptr;
 154
 155         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 156                 return (NULL);
 157         memset (new, 0, sizeof (procstat_t));
 158         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 159
 160         for (ptr = list; ptr != NULL; ptr = ptr->next)
 161                 if (ptr->next == NULL)
 162                         break;
 163
 164         if (ptr != NULL)
 165                 ptr->next = new;
 166
 167         return (new);
 168 }
 169
 170 static void ps_list_add (procstat_t *list, procstat_t *entry)
 171 {
 172         procstat_t *ptr;
 173
 174         ptr = list;
 175         while ((ptr != NULL) && (strcmp (ptr->name, entry->name) != 0))
 176                 ptr = ptr->next;
 177
 178         if (ptr == NULL)
 179                 return;
 180
 181         ptr->num_proc    += entry->num_proc;
 182         ptr->num_lwp     += entry->num_lwp;
 183         ptr->vmem_rss    += entry->vmem_rss;
 184         ptr->vmem_minflt += entry->vmem_minflt;
 185         ptr->vmem_majflt += entry->vmem_majflt;
 186         ptr->cpu_user    += entry->cpu_user;
 187         ptr->cpu_system  += entry->cpu_system;
 188 }
 189
 190 static void ps_list_reset (procstat_t *ps)
 191 {
 192         while (ps != NULL)
 193         {
 194                 ps->num_proc    = 0;
 195                 ps->num_lwp     = 0;
 196                 ps->vmem_rss    = 0;
 197                 ps->vmem_minflt = 0;
 198                 ps->vmem_majflt = 0;
 199                 ps->cpu_user    = 0;
 200                 ps->cpu_system  = 0;
 201                 ps = ps->next;
 202         }
 203 }
 204
 205 static int ps_config (char *key, char *value)
 206 {
 207         if (strcasecmp (key, "CollectName") == 0)
 208         {
 209                 procstat_t *entry;
 210
 211                 entry = ps_list_append (list_head_g, value);
 212                 if (entry == NULL)
 213                 {
 214                         syslog (LOG_ERR, "processes plugin: ps_list_append failed.");
 215                         return (1);
 216                 }
 217                 if (list_head_g == NULL)
 218                         list_head_g = entry;
 219         }
 220         else
 221         {
 222                 return (-1);
 223         }
 224
 225         return (0);
 226 }
 227
 228 static void ps_init (void)
 229 {
 230 #if HAVE_THREAD_INFO
 231         kern_return_t status;
 232
 233         port_host_self = mach_host_self ();
 234         port_task_self = mach_task_self ();
 235
 236         if (pset_list != NULL)
 237         {
 238                 vm_deallocate (port_task_self,
 239                                 (vm_address_t) pset_list,
 240                                 pset_list_len * sizeof (processor_set_t));
 241                 pset_list = NULL;
 242                 pset_list_len = 0;
 243         }
 244
 245         if ((status = host_processor_sets (port_host_self,
 246                                         &pset_list,
 247                                         &pset_list_len)) != KERN_SUCCESS)
 248         {
 249                 syslog (LOG_ERR, "host_processor_sets failed: %s\n",
 250                                 mach_error_string (status));
 251                 pset_list = NULL;
 252                 pset_list_len = 0;
 253                 return;
 254         }
 255 /* #endif HAVE_THREAD_INFO */
 256
 257 #elif KERNEL_LINUX
 258         pagesize_g = sysconf(_SC_PAGESIZE);
 259         DBG ("pagesize_g = %li; CONFIG_HZ = %i;",
 260                         pagesize_g, CONFIG_HZ);
 261 #endif /* KERNEL_LINUX */
 262
 263         return;
 264 }
 265
 266 static void ps_write (char *host, char *inst, char *val)
 267 {
 268         rrd_update_file (host, processes_file, val,
 269                         processes_ds_def, processes_ds_num);
 270 }
 271
 272 static void ps_rss_write (char *host, char *inst, char *val)
 273 {
 274         char filename[256];
 275         int status;
 276
 277         status = snprintf (filename, 256, ps_rss_file, inst);
 278         if ((status < 1) || (status >= 256))
 279                 return;
 280
 281         rrd_update_file (host, filename, val, ps_rss_ds_def, ps_rss_ds_num);
 282 }
 283
 284 #if PROCESSES_HAVE_READ
 285 static void ps_submit (int running,
 286                 int sleeping,
 287                 int zombies,
 288                 int stopped,
 289                 int paging,
 290                 int blocked)
 291 {
 292         char buf[BUFSIZE];
 293
 294         if (snprintf (buf, BUFSIZE, "%u:%i:%i:%i:%i:%i:%i",
 295                                 (unsigned int) curtime,
 296                                 running, sleeping, zombies, stopped, paging,
 297                                 blocked) >= BUFSIZE)
 298                 return;
 299
 300         DBG ("running = %i; sleeping = %i; zombies = %i; stopped = %i; paging = %i; blocked = %i;",
 301                         running, sleeping, zombies, stopped, paging, blocked);
 302
 303         plugin_submit (MODULE_NAME, "-", buf);
 304 }
 305
 306 static void ps_submit_proc (procstat_t *ps)
 307 {
 308         char buffer[64];
 309
 310         if (ps == NULL)
 311                 return;
 312
 313         snprintf (buffer, 64, "%u:%lu",
 314                         (unsigned int) curtime,
 315                         ps->vmem_rss);
 316         buffer[63] = '\0';
 317         plugin_submit ("ps_rss", ps->name, buffer);
 318
 319         DBG ("name = %s; num_proc = %i; num_lwp = %i; vmem_rss = %i; "
 320                         "vmem_minflt = %i; vmem_majflt = %i; "
 321                         "cpu_user = %i; cpu_system = %i;",
 322                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 323                         ps->vmem_minflt, ps->vmem_majflt, ps->cpu_user,
 324                         ps->cpu_system);
 325
 326 }
 327
 328 #if KERNEL_LINUX
 329 static int *ps_read_tasks (int pid)
 330 {
 331         int *list = NULL;
 332         int  list_size = 1; /* size of allocated space, in elements */
 333         int  list_len = 0;  /* number of currently used elements */
 334
 335         char           dirname[64];
 336         DIR           *dh;
 337         struct dirent *ent;
 338
 339         snprintf (dirname, 64, "/proc/%i/task", pid);
 340         dirname[63] = '\0';
 341
 342         if ((dh = opendir (dirname)) == NULL)
 343         {
 344                 syslog (LOG_NOTICE, "processes plugin: Failed to open directory `%s'",
 345                                 dirname);
 346                 return (NULL);
 347         }
 348
 349         while ((ent = readdir (dh)) != NULL)
 350         {
 351                 if (!isdigit (ent->d_name[0]))
 352                         continue;
 353
 354                 if ((list_len + 1) >= list_size)
 355                 {
 356                         int *new_ptr;
 357                         int  new_size = 2 * list_size;
 358                         /* Comes in sizes: 2, 4, 8, 16, ... */
 359
 360                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 361                         if (new_ptr == NULL)
 362                         {
 363                                 if (list != NULL)
 364                                         free (list);
 365                                 syslog (LOG_ERR, "processes plugin: "
 366                                                 "Failed to allocate more memory.");
 367                                 return (NULL);
 368                         }
 369
 370                         list = new_ptr;
 371                         list_size = new_size;
 372
 373                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 374                 }
 375
 376                 list[list_len] = atoi (ent->d_name);
 377                 if (list[list_len] != 0)
 378                         list_len++;
 379         }
 380
 381         closedir (dh);
 382
 383         assert (list_len < list_size);
 384         assert (list[list_len] == 0);
 385
 386         return (list);
 387 }
 388
 389 int ps_read_process (int pid, procstat_t *ps, char *state)
 390 {
 391         char  filename[64];
 392         char  buffer[1024];
 393         FILE *fh;
 394
 395         char *fields[64];
 396         char  fields_len;
 397
 398         int  *tasks;
 399         int   i;
 400
 401         int   ppid;
 402         int   name_len;
 403
 404         memset (ps, 0, sizeof (procstat_t));
 405
 406         snprintf (filename, 64, "/proc/%i/stat", pid);
 407         filename[63] = '\0';
 408
 409         if ((fh = fopen (filename, "r")) == NULL)
 410                 return (-1);
 411
 412         if (fgets (buffer, 1024, fh) == NULL)
 413         {
 414                 fclose (fh);
 415                 return (-1);
 416         }
 417
 418         fclose (fh);
 419
 420         fields_len = strsplit (buffer, fields, 64);
 421         if (fields_len < 24)
 422         {
 423                 DBG ("`%s' has only %i fields..",
 424                                 filename, fields_len);
 425                 return (-1);
 426         }
 427         else if (fields_len != 41)
 428         {
 429                 DBG ("WARNING: (fields_len = %i) != 41", fields_len);
 430         }
 431
 432         /* copy the name, strip brackets in the process */
 433         name_len = strlen (fields[1]) - 2;
 434         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 435         {
 436                 DBG ("No brackets found in process name: `%s'", fields[1]);
 437                 return (-1);
 438         }
 439         fields[1] = fields[1] + 1;
 440         fields[1][name_len] = '\0';
 441         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 442
 443         ppid = atoi (fields[3]);
 444
 445         if ((tasks = ps_read_tasks (pid)) == NULL)
 446         {
 447                 DBG ("ps_read_tasks (%i) failed.", pid);
 448                 return (-1);
 449         }
 450
 451         *state = '\0';
 452         ps->num_lwp  = 0;
 453         ps->num_proc = 1;
 454         for (i = 0; tasks[i] != 0; i++)
 455                 ps->num_lwp++;
 456
 457         free (tasks);
 458         tasks = NULL;
 459
 460         /* Leave the rest at zero if this is only an LWP */
 461         if (ps->num_proc == 0)
 462         {
 463                 DBG ("This is only an LWP: pid = %i; name = %s;",
 464                                 pid, ps->name);
 465                 return (0);
 466         }
 467
 468         ps->vmem_minflt = atol  (fields[9]);
 469         ps->vmem_majflt = atol  (fields[11]);
 470         ps->cpu_user    = atoll (fields[13]);
 471         ps->cpu_system  = atoll (fields[14]);
 472         ps->vmem_rss    = atol  (fields[23]);
 473
 474         /* Convert jiffies to useconds */
 475         ps->cpu_user   = ps->cpu_user   * 1000000 / CONFIG_HZ;
 476         ps->cpu_system = ps->cpu_system * 1000000 / CONFIG_HZ;
 477         ps->vmem_rss   = ps->vmem_rss * pagesize_g;
 478
 479         *state = fields[2][0];
 480
 481         /* success */
 482         return (0);
 483 } /* int ps_read_process (...) */
 484 #endif /* KERNEL_LINUX */
 485
 486 static void ps_read (void)
 487 {
 488 #if HAVE_THREAD_INFO
 489         kern_return_t            status;
 490
 491         int                      pset;
 492         processor_set_t          port_pset_priv;
 493
 494         int                      task;
 495         task_array_t             task_list;
 496         mach_msg_type_number_t   task_list_len;
 497
 498         int                      thread;
 499         thread_act_array_t       thread_list;
 500         mach_msg_type_number_t   thread_list_len;
 501         thread_basic_info_data_t thread_data;
 502         mach_msg_type_number_t   thread_data_len;
 503
 504         int running  = 0;
 505         int sleeping = 0;
 506         int zombies  = 0;
 507         int stopped  = 0;
 508         int blocked  = 0;
 509
 510         /*
 511          * The Mach-concept is a little different from the traditional UNIX
 512          * concept: All the work is done in threads. Threads are contained in
 513          * `tasks'. Therefore, `task status' doesn't make much sense, since
 514          * it's actually a `thread status'.
 515          * Tasks are assigned to sets of processors, so that's where you go to
 516          * get a list.
 517          */
 518         for (pset = 0; pset < pset_list_len; pset++)
 519         {
 520                 if ((status = host_processor_set_priv (port_host_self,
 521                                                 pset_list[pset],
 522                                                 &port_pset_priv)) != KERN_SUCCESS)
 523                 {
 524                         syslog (LOG_ERR, "host_processor_set_priv failed: %s\n",
 525                                         mach_error_string (status));
 526                         continue;
 527                 }
 528
 529                 if ((status = processor_set_tasks (port_pset_priv,
 530                                                 &task_list,
 531                                                 &task_list_len)) != KERN_SUCCESS)
 532                 {
 533                         syslog (LOG_ERR, "processor_set_tasks failed: %s\n",
 534                                         mach_error_string (status));
 535                         mach_port_deallocate (port_task_self, port_pset_priv);
 536                         continue;
 537                 }
 538
 539                 for (task = 0; task < task_list_len; task++)
 540                 {
 541                         status = task_threads (task_list[task], &thread_list,
 542                                         &thread_list_len);
 543                         if (status != KERN_SUCCESS)
 544                         {
 545                                 /* Apple's `top' treats this case a zombie. It
 546                                  * makes sense to some extend: A `zombie'
 547                                  * thread is nonsense, since the task/process
 548                                  * is dead. */
 549                                 zombies++;
 550                                 DBG ("task_threads failed: %s",
 551                                                 mach_error_string (status));
 552                                 if (task_list[task] != port_task_self)
 553                                         mach_port_deallocate (port_task_self,
 554                                                         task_list[task]);
 555                                 continue; /* with next task_list */
 556                         }
 557
 558                         for (thread = 0; thread < thread_list_len; thread++)
 559                         {
 560                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 561                                 status = thread_info (thread_list[thread],
 562                                                 THREAD_BASIC_INFO,
 563                                                 (thread_info_t) &thread_data,
 564                                                 &thread_data_len);
 565                                 if (status != KERN_SUCCESS)
 566                                 {
 567                                         syslog (LOG_ERR, "thread_info failed: %s\n",
 568                                                         mach_error_string (status));
 569                                         if (task_list[task] != port_task_self)
 570                                                 mach_port_deallocate (port_task_self,
 571                                                                 thread_list[thread]);
 572                                         continue; /* with next thread_list */
 573                                 }
 574
 575                                 switch (thread_data.run_state)
 576                                 {
 577                                         case TH_STATE_RUNNING:
 578                                                 running++;
 579                                                 break;
 580                                         case TH_STATE_STOPPED:
 581                                         /* What exactly is `halted'? */
 582                                         case TH_STATE_HALTED:
 583                                                 stopped++;
 584                                                 break;
 585                                         case TH_STATE_WAITING:
 586                                                 sleeping++;
 587                                                 break;
 588                                         case TH_STATE_UNINTERRUPTIBLE:
 589                                                 blocked++;
 590                                                 break;
 591                                         /* There is no `zombie' case here,
 592                                          * since there are no zombie-threads.
 593                                          * There's only zombie tasks, which are
 594                                          * handled above. */
 595                                         default:
 596                                                 syslog (LOG_WARNING,
 597                                                                 "Unknown thread status: %s",
 598                                                                 thread_data.run_state);
 599                                                 break;
 600                                 } /* switch (thread_data.run_state) */
 601
 602                                 if (task_list[task] != port_task_self)
 603                                 {
 604                                         status = mach_port_deallocate (port_task_self,
 605                                                         thread_list[thread]);
 606                                         if (status != KERN_SUCCESS)
 607                                                 syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 608                                                                 mach_error_string (status));
 609                                 }
 610                         } /* for (thread_list) */
 611
 612                         if ((status = vm_deallocate (port_task_self,
 613                                                         (vm_address_t) thread_list,
 614                                                         thread_list_len * sizeof (thread_act_t)))
 615                                         != KERN_SUCCESS)
 616                         {
 617                                 syslog (LOG_ERR, "vm_deallocate failed: %s",
 618                                                 mach_error_string (status));
 619                         }
 620                         thread_list = NULL;
 621                         thread_list_len = 0;
 622
 623                         /* Only deallocate the task port, if it isn't our own.
 624                          * Don't know what would happen in that case, but this
 625                          * is what Apple's top does.. ;) */
 626                         if (task_list[task] != port_task_self)
 627                         {
 628                                 status = mach_port_deallocate (port_task_self,
 629                                                 task_list[task]);
 630                                 if (status != KERN_SUCCESS)
 631                                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 632                                                         mach_error_string (status));
 633                         }
 634                 } /* for (task_list) */
 635
 636                 if ((status = vm_deallocate (port_task_self,
 637                                 (vm_address_t) task_list,
 638                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 639                 {
 640                         syslog (LOG_ERR, "vm_deallocate failed: %s",
 641                                         mach_error_string (status));
 642                 }
 643                 task_list = NULL;
 644                 task_list_len = 0;
 645
 646                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 647                                 != KERN_SUCCESS)
 648                 {
 649                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 650                                         mach_error_string (status));
 651                 }
 652         } /* for (pset_list) */
 653
 654         ps_submit (running, sleeping, zombies, stopped, -1, blocked);
 655 /* #endif HAVE_THREAD_INFO */
 656
 657 #elif KERNEL_LINUX
 658         int running  = 0;
 659         int sleeping = 0;
 660         int zombies  = 0;
 661         int stopped  = 0;
 662         int paging   = 0;
 663         int blocked  = 0;
 664
 665         struct dirent *ent;
 666         DIR           *proc;
 667         int            pid;
 668
 669         int        status;
 670         procstat_t ps;
 671         char       state;
 672
 673         procstat_t *ps_ptr;
 674
 675         running = sleeping = zombies = stopped = paging = blocked = 0;
 676         ps_list_reset (list_head_g);
 677
 678         if ((proc = opendir ("/proc")) == NULL)
 679         {
 680                 syslog (LOG_ERR, "Cannot open `/proc': %s", strerror (errno));
 681                 return;
 682         }
 683
 684         while ((ent = readdir (proc)) != NULL)
 685         {
 686                 if (!isdigit (ent->d_name[0]))
 687                         continue;
 688
 689                 if ((pid = atoi (ent->d_name)) < 1)
 690                         continue;
 691
 692                 status = ps_read_process (pid, &ps, &state);
 693                 if (status != 0)
 694                 {
 695                         DBG ("ps_read_process failed: %i", status);
 696                         continue;
 697                 }
 698
 699                 switch (state)
 700                 {
 701                         case 'R': running++;  break;
 702                         case 'S': sleeping++; break;
 703                         case 'D': blocked++;  break;
 704                         case 'Z': zombies++;  break;
 705                         case 'T': stopped++;  break;
 706                         case 'W': paging++;   break;
 707                 }
 708
 709                 if (list_head_g != NULL)
 710                         ps_list_add (list_head_g, &ps);
 711         }
 712
 713         closedir (proc);
 714
 715         ps_submit (running, sleeping, zombies, stopped, paging, blocked);
 716
 717         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
 718                 ps_submit_proc (ps_ptr);
 719 #endif /* KERNEL_LINUX */
 720 }
 721 #else
 722 # define ps_read NULL
 723 #endif /* PROCESSES_HAVE_READ */
 724
 725 void module_register (void)
 726 {
 727         plugin_register (MODULE_NAME, ps_init, ps_read, ps_write);
 728         plugin_register ("ps_rss", NULL, NULL, ps_rss_write);
 729         cf_register (MODULE_NAME, ps_config, config_keys, config_keys_num);
 730 }
 731
 732 #undef BUFSIZE
 733 #undef MODULE_NAME