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 *ps_cputime_file = "processes/ps_cputime-%s.rrd";
 116 static char *ps_cputime_ds_def[] =
 117 {
 118         /* 1 second in user-mode per second ought to be enough.. */
 119         "DS:user:COUNTER:"COLLECTD_HEARTBEAT":0:1000000",
 120         "DS:syst:COUNTER:"COLLECTD_HEARTBEAT":0:1000000",
 121         NULL
 122 };
 123 static int ps_cputime_ds_num = 2;
 124
 125 static char *config_keys[] =
 126 {
 127         "CollectName",
 128         NULL
 129 };
 130 static int config_keys_num = 1;
 131
 132 typedef struct procstat
 133 {
 134 #define PROCSTAT_NAME_LEN 256
 135         char               name[PROCSTAT_NAME_LEN];
 136         unsigned int       num_proc;
 137         unsigned int       num_lwp;
 138         unsigned long      vmem_rss;
 139         unsigned long      vmem_minflt;
 140         unsigned long      vmem_majflt;
 141         unsigned long long cpu_user;
 142         unsigned long long cpu_system;
 143         struct procstat   *next;
 144 } procstat_t;
 145
 146 static procstat_t *list_head_g = NULL;
 147
 148 #if HAVE_THREAD_INFO
 149 static mach_port_t port_host_self;
 150 static mach_port_t port_task_self;
 151
 152 static processor_set_name_array_t pset_list;
 153 static mach_msg_type_number_t     pset_list_len;
 154 /* #endif HAVE_THREAD_INFO */
 155
 156 #elif KERNEL_LINUX
 157 static long pagesize_g;
 158 #endif /* KERNEL_LINUX */
 159
 160 static procstat_t *ps_list_append (procstat_t *list, const char *name)
 161 {
 162         procstat_t *new;
 163         procstat_t *ptr;
 164
 165         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 166                 return (NULL);
 167         memset (new, 0, sizeof (procstat_t));
 168         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 169
 170         for (ptr = list; ptr != NULL; ptr = ptr->next)
 171                 if (ptr->next == NULL)
 172                         break;
 173
 174         if (ptr != NULL)
 175                 ptr->next = new;
 176
 177         return (new);
 178 }
 179
 180 static void ps_list_add (procstat_t *list, procstat_t *entry)
 181 {
 182         procstat_t *ptr;
 183
 184         ptr = list;
 185         while ((ptr != NULL) && (strcmp (ptr->name, entry->name) != 0))
 186                 ptr = ptr->next;
 187
 188         if (ptr == NULL)
 189                 return;
 190
 191         ptr->num_proc    += entry->num_proc;
 192         ptr->num_lwp     += entry->num_lwp;
 193         ptr->vmem_rss    += entry->vmem_rss;
 194         ptr->vmem_minflt += entry->vmem_minflt;
 195         ptr->vmem_majflt += entry->vmem_majflt;
 196         ptr->cpu_user    += entry->cpu_user;
 197         ptr->cpu_system  += entry->cpu_system;
 198 }
 199
 200 static void ps_list_reset (procstat_t *ps)
 201 {
 202         while (ps != NULL)
 203         {
 204                 ps->num_proc    = 0;
 205                 ps->num_lwp     = 0;
 206                 ps->vmem_rss    = 0;
 207                 ps->vmem_minflt = 0;
 208                 ps->vmem_majflt = 0;
 209                 ps->cpu_user    = 0;
 210                 ps->cpu_system  = 0;
 211                 ps = ps->next;
 212         }
 213 }
 214
 215 static int ps_config (char *key, char *value)
 216 {
 217         if (strcasecmp (key, "CollectName") == 0)
 218         {
 219                 procstat_t *entry;
 220
 221                 entry = ps_list_append (list_head_g, value);
 222                 if (entry == NULL)
 223                 {
 224                         syslog (LOG_ERR, "processes plugin: ps_list_append failed.");
 225                         return (1);
 226                 }
 227                 if (list_head_g == NULL)
 228                         list_head_g = entry;
 229         }
 230         else
 231         {
 232                 return (-1);
 233         }
 234
 235         return (0);
 236 }
 237
 238 static void ps_init (void)
 239 {
 240 #if HAVE_THREAD_INFO
 241         kern_return_t status;
 242
 243         port_host_self = mach_host_self ();
 244         port_task_self = mach_task_self ();
 245
 246         if (pset_list != NULL)
 247         {
 248                 vm_deallocate (port_task_self,
 249                                 (vm_address_t) pset_list,
 250                                 pset_list_len * sizeof (processor_set_t));
 251                 pset_list = NULL;
 252                 pset_list_len = 0;
 253         }
 254
 255         if ((status = host_processor_sets (port_host_self,
 256                                         &pset_list,
 257                                         &pset_list_len)) != KERN_SUCCESS)
 258         {
 259                 syslog (LOG_ERR, "host_processor_sets failed: %s\n",
 260                                 mach_error_string (status));
 261                 pset_list = NULL;
 262                 pset_list_len = 0;
 263                 return;
 264         }
 265 /* #endif HAVE_THREAD_INFO */
 266
 267 #elif KERNEL_LINUX
 268         pagesize_g = sysconf(_SC_PAGESIZE);
 269         DBG ("pagesize_g = %li; CONFIG_HZ = %i;",
 270                         pagesize_g, CONFIG_HZ);
 271 #endif /* KERNEL_LINUX */
 272
 273         return;
 274 }
 275
 276 static void ps_write (char *host, char *inst, char *val)
 277 {
 278         rrd_update_file (host, processes_file, val,
 279                         processes_ds_def, processes_ds_num);
 280 }
 281
 282 static void ps_rss_write (char *host, char *inst, char *val)
 283 {
 284         char filename[256];
 285         int status;
 286
 287         status = snprintf (filename, 256, ps_rss_file, inst);
 288         if ((status < 1) || (status >= 256))
 289                 return;
 290
 291         rrd_update_file (host, filename, val, ps_rss_ds_def, ps_rss_ds_num);
 292 }
 293
 294 static void ps_cputime_write (char *host, char *inst, char *val)
 295 {
 296         char filename[256];
 297         int status;
 298
 299         status = snprintf (filename, 256, ps_cputime_file, inst);
 300         if ((status < 1) || (status >= 256))
 301                 return;
 302
 303         DBG ("host = %s; filename = %s; val = %s;",
 304                         host, filename, val);
 305         rrd_update_file (host, filename, val,
 306                         ps_cputime_ds_def, ps_cputime_ds_num);
 307 }
 308
 309 #if PROCESSES_HAVE_READ
 310 static void ps_submit (int running,
 311                 int sleeping,
 312                 int zombies,
 313                 int stopped,
 314                 int paging,
 315                 int blocked)
 316 {
 317         char buf[BUFSIZE];
 318
 319         if (snprintf (buf, BUFSIZE, "%u:%i:%i:%i:%i:%i:%i",
 320                                 (unsigned int) curtime,
 321                                 running, sleeping, zombies, stopped, paging,
 322                                 blocked) >= BUFSIZE)
 323                 return;
 324
 325         DBG ("running = %i; sleeping = %i; zombies = %i; stopped = %i; paging = %i; blocked = %i;",
 326                         running, sleeping, zombies, stopped, paging, blocked);
 327
 328         plugin_submit (MODULE_NAME, "-", buf);
 329 }
 330
 331 static void ps_submit_proc (procstat_t *ps)
 332 {
 333         char buffer[64];
 334
 335         if (ps == NULL)
 336                 return;
 337
 338         snprintf (buffer, 64, "%u:%lu",
 339                         (unsigned int) curtime,
 340                         ps->vmem_rss);
 341         buffer[63] = '\0';
 342         plugin_submit ("ps_rss", ps->name, buffer);
 343
 344         snprintf (buffer, 64, "%u:%u:%u",
 345                         (unsigned int) curtime,
 346                         /* Make the counter overflow */
 347                         (unsigned int) (ps->cpu_user   & 0xFFFFFFFF),
 348                         (unsigned int) (ps->cpu_system & 0xFFFFFFFF));
 349         buffer[63] = '\0';
 350         plugin_submit ("ps_cputime", ps->name, buffer);
 351
 352         DBG ("name = %s; num_proc = %i; num_lwp = %i; vmem_rss = %i; "
 353                         "vmem_minflt = %i; vmem_majflt = %i; "
 354                         "cpu_user = %i; cpu_system = %i;",
 355                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 356                         ps->vmem_minflt, ps->vmem_majflt, ps->cpu_user,
 357                         ps->cpu_system);
 358
 359 }
 360
 361 #if KERNEL_LINUX
 362 static int *ps_read_tasks (int pid)
 363 {
 364         int *list = NULL;
 365         int  list_size = 1; /* size of allocated space, in elements */
 366         int  list_len = 0;  /* number of currently used elements */
 367
 368         char           dirname[64];
 369         DIR           *dh;
 370         struct dirent *ent;
 371
 372         snprintf (dirname, 64, "/proc/%i/task", pid);
 373         dirname[63] = '\0';
 374
 375         if ((dh = opendir (dirname)) == NULL)
 376         {
 377                 syslog (LOG_NOTICE, "processes plugin: Failed to open directory `%s'",
 378                                 dirname);
 379                 return (NULL);
 380         }
 381
 382         while ((ent = readdir (dh)) != NULL)
 383         {
 384                 if (!isdigit (ent->d_name[0]))
 385                         continue;
 386
 387                 if ((list_len + 1) >= list_size)
 388                 {
 389                         int *new_ptr;
 390                         int  new_size = 2 * list_size;
 391                         /* Comes in sizes: 2, 4, 8, 16, ... */
 392
 393                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 394                         if (new_ptr == NULL)
 395                         {
 396                                 if (list != NULL)
 397                                         free (list);
 398                                 syslog (LOG_ERR, "processes plugin: "
 399                                                 "Failed to allocate more memory.");
 400                                 return (NULL);
 401                         }
 402
 403                         list = new_ptr;
 404                         list_size = new_size;
 405
 406                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 407                 }
 408
 409                 list[list_len] = atoi (ent->d_name);
 410                 if (list[list_len] != 0)
 411                         list_len++;
 412         }
 413
 414         closedir (dh);
 415
 416         assert (list_len < list_size);
 417         assert (list[list_len] == 0);
 418
 419         return (list);
 420 }
 421
 422 int ps_read_process (int pid, procstat_t *ps, char *state)
 423 {
 424         char  filename[64];
 425         char  buffer[1024];
 426         FILE *fh;
 427
 428         char *fields[64];
 429         char  fields_len;
 430
 431         int  *tasks;
 432         int   i;
 433
 434         int   ppid;
 435         int   name_len;
 436
 437         memset (ps, 0, sizeof (procstat_t));
 438
 439         snprintf (filename, 64, "/proc/%i/stat", pid);
 440         filename[63] = '\0';
 441
 442         if ((fh = fopen (filename, "r")) == NULL)
 443                 return (-1);
 444
 445         if (fgets (buffer, 1024, fh) == NULL)
 446         {
 447                 fclose (fh);
 448                 return (-1);
 449         }
 450
 451         fclose (fh);
 452
 453         fields_len = strsplit (buffer, fields, 64);
 454         if (fields_len < 24)
 455         {
 456                 DBG ("`%s' has only %i fields..",
 457                                 filename, fields_len);
 458                 return (-1);
 459         }
 460         else if (fields_len != 41)
 461         {
 462                 DBG ("WARNING: (fields_len = %i) != 41", fields_len);
 463         }
 464
 465         /* copy the name, strip brackets in the process */
 466         name_len = strlen (fields[1]) - 2;
 467         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 468         {
 469                 DBG ("No brackets found in process name: `%s'", fields[1]);
 470                 return (-1);
 471         }
 472         fields[1] = fields[1] + 1;
 473         fields[1][name_len] = '\0';
 474         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 475
 476         ppid = atoi (fields[3]);
 477
 478         if ((tasks = ps_read_tasks (pid)) == NULL)
 479         {
 480                 DBG ("ps_read_tasks (%i) failed.", pid);
 481                 return (-1);
 482         }
 483
 484         *state = '\0';
 485         ps->num_lwp  = 0;
 486         ps->num_proc = 1;
 487         for (i = 0; tasks[i] != 0; i++)
 488                 ps->num_lwp++;
 489
 490         free (tasks);
 491         tasks = NULL;
 492
 493         /* Leave the rest at zero if this is only an LWP */
 494         if (ps->num_proc == 0)
 495         {
 496                 DBG ("This is only an LWP: pid = %i; name = %s;",
 497                                 pid, ps->name);
 498                 return (0);
 499         }
 500
 501         ps->vmem_minflt = atol  (fields[9]);
 502         ps->vmem_majflt = atol  (fields[11]);
 503         ps->cpu_user    = atoll (fields[13]);
 504         ps->cpu_system  = atoll (fields[14]);
 505         ps->vmem_rss    = atol  (fields[23]);
 506
 507         /* Convert jiffies to useconds */
 508         ps->cpu_user   = ps->cpu_user   * 1000000 / CONFIG_HZ;
 509         ps->cpu_system = ps->cpu_system * 1000000 / CONFIG_HZ;
 510         ps->vmem_rss   = ps->vmem_rss * pagesize_g;
 511
 512         *state = fields[2][0];
 513
 514         /* success */
 515         return (0);
 516 } /* int ps_read_process (...) */
 517 #endif /* KERNEL_LINUX */
 518
 519 static void ps_read (void)
 520 {
 521 #if HAVE_THREAD_INFO
 522         kern_return_t            status;
 523
 524         int                      pset;
 525         processor_set_t          port_pset_priv;
 526
 527         int                      task;
 528         task_array_t             task_list;
 529         mach_msg_type_number_t   task_list_len;
 530
 531         int                      thread;
 532         thread_act_array_t       thread_list;
 533         mach_msg_type_number_t   thread_list_len;
 534         thread_basic_info_data_t thread_data;
 535         mach_msg_type_number_t   thread_data_len;
 536
 537         int running  = 0;
 538         int sleeping = 0;
 539         int zombies  = 0;
 540         int stopped  = 0;
 541         int blocked  = 0;
 542
 543         /*
 544          * The Mach-concept is a little different from the traditional UNIX
 545          * concept: All the work is done in threads. Threads are contained in
 546          * `tasks'. Therefore, `task status' doesn't make much sense, since
 547          * it's actually a `thread status'.
 548          * Tasks are assigned to sets of processors, so that's where you go to
 549          * get a list.
 550          */
 551         for (pset = 0; pset < pset_list_len; pset++)
 552         {
 553                 if ((status = host_processor_set_priv (port_host_self,
 554                                                 pset_list[pset],
 555                                                 &port_pset_priv)) != KERN_SUCCESS)
 556                 {
 557                         syslog (LOG_ERR, "host_processor_set_priv failed: %s\n",
 558                                         mach_error_string (status));
 559                         continue;
 560                 }
 561
 562                 if ((status = processor_set_tasks (port_pset_priv,
 563                                                 &task_list,
 564                                                 &task_list_len)) != KERN_SUCCESS)
 565                 {
 566                         syslog (LOG_ERR, "processor_set_tasks failed: %s\n",
 567                                         mach_error_string (status));
 568                         mach_port_deallocate (port_task_self, port_pset_priv);
 569                         continue;
 570                 }
 571
 572                 for (task = 0; task < task_list_len; task++)
 573                 {
 574                         status = task_threads (task_list[task], &thread_list,
 575                                         &thread_list_len);
 576                         if (status != KERN_SUCCESS)
 577                         {
 578                                 /* Apple's `top' treats this case a zombie. It
 579                                  * makes sense to some extend: A `zombie'
 580                                  * thread is nonsense, since the task/process
 581                                  * is dead. */
 582                                 zombies++;
 583                                 DBG ("task_threads failed: %s",
 584                                                 mach_error_string (status));
 585                                 if (task_list[task] != port_task_self)
 586                                         mach_port_deallocate (port_task_self,
 587                                                         task_list[task]);
 588                                 continue; /* with next task_list */
 589                         }
 590
 591                         for (thread = 0; thread < thread_list_len; thread++)
 592                         {
 593                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 594                                 status = thread_info (thread_list[thread],
 595                                                 THREAD_BASIC_INFO,
 596                                                 (thread_info_t) &thread_data,
 597                                                 &thread_data_len);
 598                                 if (status != KERN_SUCCESS)
 599                                 {
 600                                         syslog (LOG_ERR, "thread_info failed: %s\n",
 601                                                         mach_error_string (status));
 602                                         if (task_list[task] != port_task_self)
 603                                                 mach_port_deallocate (port_task_self,
 604                                                                 thread_list[thread]);
 605                                         continue; /* with next thread_list */
 606                                 }
 607
 608                                 switch (thread_data.run_state)
 609                                 {
 610                                         case TH_STATE_RUNNING:
 611                                                 running++;
 612                                                 break;
 613                                         case TH_STATE_STOPPED:
 614                                         /* What exactly is `halted'? */
 615                                         case TH_STATE_HALTED:
 616                                                 stopped++;
 617                                                 break;
 618                                         case TH_STATE_WAITING:
 619                                                 sleeping++;
 620                                                 break;
 621                                         case TH_STATE_UNINTERRUPTIBLE:
 622                                                 blocked++;
 623                                                 break;
 624                                         /* There is no `zombie' case here,
 625                                          * since there are no zombie-threads.
 626                                          * There's only zombie tasks, which are
 627                                          * handled above. */
 628                                         default:
 629                                                 syslog (LOG_WARNING,
 630                                                                 "Unknown thread status: %s",
 631                                                                 thread_data.run_state);
 632                                                 break;
 633                                 } /* switch (thread_data.run_state) */
 634
 635                                 if (task_list[task] != port_task_self)
 636                                 {
 637                                         status = mach_port_deallocate (port_task_self,
 638                                                         thread_list[thread]);
 639                                         if (status != KERN_SUCCESS)
 640                                                 syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 641                                                                 mach_error_string (status));
 642                                 }
 643                         } /* for (thread_list) */
 644
 645                         if ((status = vm_deallocate (port_task_self,
 646                                                         (vm_address_t) thread_list,
 647                                                         thread_list_len * sizeof (thread_act_t)))
 648                                         != KERN_SUCCESS)
 649                         {
 650                                 syslog (LOG_ERR, "vm_deallocate failed: %s",
 651                                                 mach_error_string (status));
 652                         }
 653                         thread_list = NULL;
 654                         thread_list_len = 0;
 655
 656                         /* Only deallocate the task port, if it isn't our own.
 657                          * Don't know what would happen in that case, but this
 658                          * is what Apple's top does.. ;) */
 659                         if (task_list[task] != port_task_self)
 660                         {
 661                                 status = mach_port_deallocate (port_task_self,
 662                                                 task_list[task]);
 663                                 if (status != KERN_SUCCESS)
 664                                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 665                                                         mach_error_string (status));
 666                         }
 667                 } /* for (task_list) */
 668
 669                 if ((status = vm_deallocate (port_task_self,
 670                                 (vm_address_t) task_list,
 671                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 672                 {
 673                         syslog (LOG_ERR, "vm_deallocate failed: %s",
 674                                         mach_error_string (status));
 675                 }
 676                 task_list = NULL;
 677                 task_list_len = 0;
 678
 679                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 680                                 != KERN_SUCCESS)
 681                 {
 682                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 683                                         mach_error_string (status));
 684                 }
 685         } /* for (pset_list) */
 686
 687         ps_submit (running, sleeping, zombies, stopped, -1, blocked);
 688 /* #endif HAVE_THREAD_INFO */
 689
 690 #elif KERNEL_LINUX
 691         int running  = 0;
 692         int sleeping = 0;
 693         int zombies  = 0;
 694         int stopped  = 0;
 695         int paging   = 0;
 696         int blocked  = 0;
 697
 698         struct dirent *ent;
 699         DIR           *proc;
 700         int            pid;
 701
 702         int        status;
 703         procstat_t ps;
 704         char       state;
 705
 706         procstat_t *ps_ptr;
 707
 708         running = sleeping = zombies = stopped = paging = blocked = 0;
 709         ps_list_reset (list_head_g);
 710
 711         if ((proc = opendir ("/proc")) == NULL)
 712         {
 713                 syslog (LOG_ERR, "Cannot open `/proc': %s", strerror (errno));
 714                 return;
 715         }
 716
 717         while ((ent = readdir (proc)) != NULL)
 718         {
 719                 if (!isdigit (ent->d_name[0]))
 720                         continue;
 721
 722                 if ((pid = atoi (ent->d_name)) < 1)
 723                         continue;
 724
 725                 status = ps_read_process (pid, &ps, &state);
 726                 if (status != 0)
 727                 {
 728                         DBG ("ps_read_process failed: %i", status);
 729                         continue;
 730                 }
 731
 732                 switch (state)
 733                 {
 734                         case 'R': running++;  break;
 735                         case 'S': sleeping++; break;
 736                         case 'D': blocked++;  break;
 737                         case 'Z': zombies++;  break;
 738                         case 'T': stopped++;  break;
 739                         case 'W': paging++;   break;
 740                 }
 741
 742                 if (list_head_g != NULL)
 743                         ps_list_add (list_head_g, &ps);
 744         }
 745
 746         closedir (proc);
 747
 748         ps_submit (running, sleeping, zombies, stopped, paging, blocked);
 749
 750         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
 751                 ps_submit_proc (ps_ptr);
 752 #endif /* KERNEL_LINUX */
 753 }
 754 #else
 755 # define ps_read NULL
 756 #endif /* PROCESSES_HAVE_READ */
 757
 758 void module_register (void)
 759 {
 760         plugin_register (MODULE_NAME, ps_init, ps_read, ps_write);
 761         plugin_register ("ps_rss", NULL, NULL, ps_rss_write);
 762         plugin_register ("ps_cputime", NULL, NULL, ps_cputime_write);
 763         cf_register (MODULE_NAME, ps_config, config_keys, config_keys_num);
 764 }
 765
 766 #undef BUFSIZE
 767 #undef MODULE_NAME