src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006-2007  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 "configfile.h"
  29
  30 /* Include header files for the mach system, if they exist.. */
  31 #if HAVE_THREAD_INFO
  32 #  if HAVE_MACH_MACH_INIT_H
  33 #    include <mach/mach_init.h>
  34 #  endif
  35 #  if HAVE_MACH_HOST_PRIV_H
  36 #    include <mach/host_priv.h>
  37 #  endif
  38 #  if HAVE_MACH_MACH_ERROR_H
  39 #    include <mach/mach_error.h>
  40 #  endif
  41 #  if HAVE_MACH_MACH_HOST_H
  42 #    include <mach/mach_host.h>
  43 #  endif
  44 #  if HAVE_MACH_MACH_PORT_H
  45 #    include <mach/mach_port.h>
  46 #  endif
  47 #  if HAVE_MACH_MACH_TYPES_H
  48 #    include <mach/mach_types.h>
  49 #  endif
  50 #  if HAVE_MACH_MESSAGE_H
  51 #    include <mach/message.h>
  52 #  endif
  53 #  if HAVE_MACH_PROCESSOR_SET_H
  54 #    include <mach/processor_set.h>
  55 #  endif
  56 #  if HAVE_MACH_TASK_H
  57 #    include <mach/task.h>
  58 #  endif
  59 #  if HAVE_MACH_THREAD_ACT_H
  60 #    include <mach/thread_act.h>
  61 #  endif
  62 #  if HAVE_MACH_VM_REGION_H
  63 #    include <mach/vm_region.h>
  64 #  endif
  65 #  if HAVE_MACH_VM_MAP_H
  66 #    include <mach/vm_map.h>
  67 #  endif
  68 #  if HAVE_MACH_VM_PROT_H
  69 #    include <mach/vm_prot.h>
  70 #  endif
  71 #  if HAVE_SYS_SYSCTL_H
  72 #    include <sys/sysctl.h>
  73 #  endif
  74 /* #endif HAVE_THREAD_INFO */
  75
  76 #elif KERNEL_LINUX
  77 #  if HAVE_LINUX_CONFIG_H
  78 #    include <linux/config.h>
  79 #  endif
  80 #  ifndef CONFIG_HZ
  81 #    define CONFIG_HZ 100
  82 #  endif
  83 /* #endif KERNEL_LINUX */
  84
  85 #else
  86 # error "No applicable input method."
  87 #endif
  88
  89 #define BUFSIZE 256
  90
  91 static const char *config_keys[] =
  92 {
  93         "Process",
  94         NULL
  95 };
  96 static int config_keys_num = 1;
  97
  98 typedef struct procstat_entry_s
  99 {
 100         unsigned long id;
 101         unsigned long age;
 102
 103         unsigned long num_proc;
 104         unsigned long num_lwp;
 105         unsigned long vmem_rss;
 106
 107         unsigned long vmem_minflt;
 108         unsigned long vmem_majflt;
 109         unsigned long vmem_minflt_counter;
 110         unsigned long vmem_majflt_counter;
 111
 112         unsigned long cpu_user;
 113         unsigned long cpu_system;
 114         unsigned long cpu_user_counter;
 115         unsigned long cpu_system_counter;
 116
 117         struct procstat_entry_s *next;
 118 } procstat_entry_t;
 119
 120 #define PROCSTAT_NAME_LEN 256
 121 typedef struct procstat
 122 {
 123         char          name[PROCSTAT_NAME_LEN];
 124
 125         unsigned long num_proc;
 126         unsigned long num_lwp;
 127         unsigned long vmem_rss;
 128
 129         unsigned long vmem_minflt_counter;
 130         unsigned long vmem_majflt_counter;
 131
 132         unsigned long cpu_user_counter;
 133         unsigned long cpu_system_counter;
 134
 135         struct procstat   *next;
 136         struct procstat_entry_s *instances;
 137 } procstat_t;
 138
 139 static procstat_t *list_head_g = NULL;
 140
 141 #if HAVE_THREAD_INFO
 142 static mach_port_t port_host_self;
 143 static mach_port_t port_task_self;
 144
 145 static processor_set_name_array_t pset_list;
 146 static mach_msg_type_number_t     pset_list_len;
 147 /* #endif HAVE_THREAD_INFO */
 148
 149 #elif KERNEL_LINUX
 150 static long pagesize_g;
 151 #endif /* KERNEL_LINUX */
 152
 153 static void ps_list_register (const char *name)
 154 {
 155         procstat_t *new;
 156         procstat_t *ptr;
 157
 158         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 159                 return;
 160         memset (new, 0, sizeof (procstat_t));
 161         sstrncpy (new->name, name, sizeof (new->name));
 162
 163         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 164         {
 165                 if (strcmp (ptr->name, name) == 0)
 166                         return;
 167                 if (ptr->next == NULL)
 168                         break;
 169         }
 170
 171         if (ptr == NULL)
 172                 list_head_g = new;
 173         else
 174                 ptr->next = new;
 175 }
 176
 177 static procstat_t *ps_list_search (const char *name)
 178 {
 179         procstat_t *ptr;
 180
 181         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 182                 if (strcmp (ptr->name, name) == 0)
 183                         break;
 184
 185         return (ptr);
 186 }
 187
 188 static void ps_list_add (const char *name, procstat_entry_t *entry)
 189 {
 190         procstat_t *ps;
 191         procstat_entry_t *pse;
 192
 193         if (entry->id == 0)
 194                 return;
 195
 196         if ((ps = ps_list_search (name)) == NULL)
 197                 return;
 198
 199         for (pse = ps->instances; pse != NULL; pse = pse->next)
 200                 if ((pse->id == entry->id) || (pse->next == NULL))
 201                         break;
 202
 203         if ((pse == NULL) || (pse->id != entry->id))
 204         {
 205                 procstat_entry_t *new;
 206
 207                 new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 208                 if (new == NULL)
 209                         return;
 210                 memset (new, 0, sizeof (procstat_entry_t));
 211                 new->id = entry->id;
 212
 213                 if (pse == NULL)
 214                         ps->instances = new;
 215                 else
 216                         pse->next = new;
 217
 218                 pse = new;
 219         }
 220
 221         pse->age = 0;
 222         pse->num_proc = entry->num_proc;
 223         pse->num_lwp  = entry->num_lwp;
 224         pse->vmem_rss = entry->vmem_rss;
 225
 226         ps->num_proc += pse->num_proc;
 227         ps->num_lwp  += pse->num_lwp;
 228         ps->vmem_rss += pse->vmem_rss;
 229
 230         if ((entry->vmem_minflt_counter == 0)
 231                         && (entry->vmem_majflt_counter == 0))
 232         {
 233                 pse->vmem_minflt_counter += entry->vmem_minflt;
 234                 pse->vmem_minflt = entry->vmem_minflt;
 235
 236                 pse->vmem_majflt_counter += entry->vmem_majflt;
 237                 pse->vmem_majflt = entry->vmem_majflt;
 238         }
 239         else
 240         {
 241                 if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 242                 {
 243                         pse->vmem_minflt = entry->vmem_minflt_counter
 244                                 + (ULONG_MAX - pse->vmem_minflt_counter);
 245                 }
 246                 else
 247                 {
 248                         pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 249                 }
 250                 pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 251
 252                 if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 253                 {
 254                         pse->vmem_majflt = entry->vmem_majflt_counter
 255                                 + (ULONG_MAX - pse->vmem_majflt_counter);
 256                 }
 257                 else
 258                 {
 259                         pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 260                 }
 261                 pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 262         }
 263
 264         ps->vmem_minflt_counter += pse->vmem_minflt;
 265         ps->vmem_majflt_counter += pse->vmem_majflt;
 266
 267         if ((entry->cpu_user_counter == 0)
 268                         && (entry->cpu_system_counter == 0))
 269         {
 270                 pse->cpu_user_counter += entry->cpu_user;
 271                 pse->cpu_user = entry->cpu_user;
 272
 273                 pse->cpu_system_counter += entry->cpu_system;
 274                 pse->cpu_system = entry->cpu_system;
 275         }
 276         else
 277         {
 278                 if (entry->cpu_user_counter < pse->cpu_user_counter)
 279                 {
 280                         pse->cpu_user = entry->cpu_user_counter
 281                                 + (ULONG_MAX - pse->cpu_user_counter);
 282                 }
 283                 else
 284                 {
 285                         pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 286                 }
 287                 pse->cpu_user_counter = entry->cpu_user_counter;
 288
 289                 if (entry->cpu_system_counter < pse->cpu_system_counter)
 290                 {
 291                         pse->cpu_system = entry->cpu_system_counter
 292                                 + (ULONG_MAX - pse->cpu_system_counter);
 293                 }
 294                 else
 295                 {
 296                         pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 297                 }
 298                 pse->cpu_system_counter = entry->cpu_system_counter;
 299         }
 300
 301         ps->cpu_user_counter   += pse->cpu_user;
 302         ps->cpu_system_counter += pse->cpu_system;
 303 }
 304
 305 static void ps_list_reset (void)
 306 {
 307         procstat_t *ps;
 308         procstat_entry_t *pse;
 309         procstat_entry_t *pse_prev;
 310
 311         for (ps = list_head_g; ps != NULL; ps = ps->next)
 312         {
 313                 ps->num_proc    = 0;
 314                 ps->num_lwp     = 0;
 315                 ps->vmem_rss    = 0;
 316
 317                 pse_prev = NULL;
 318                 pse = ps->instances;
 319                 while (pse != NULL)
 320                 {
 321                         if (pse->age > 10)
 322                         {
 323                                 DEBUG ("Removing this procstat entry cause it's too old: "
 324                                                 "id = %lu; name = %s;",
 325                                                 pse->id, ps->name);
 326
 327                                 if (pse_prev == NULL)
 328                                 {
 329                                         ps->instances = pse->next;
 330                                         free (pse);
 331                                         pse = ps->instances;
 332                                 }
 333                                 else
 334                                 {
 335                                         pse_prev->next = pse->next;
 336                                         free (pse);
 337                                         pse = pse_prev->next;
 338                                 }
 339                         }
 340                         else
 341                         {
 342                                 pse->age++;
 343                                 pse_prev = pse;
 344                                 pse = pse->next;
 345                         }
 346                 } /* while (pse != NULL) */
 347         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 348 }
 349
 350 static int ps_config (const char *key, const char *value)
 351 {
 352         if (strcasecmp (key, "Process") == 0)
 353         {
 354                 ps_list_register (value);
 355         }
 356         else
 357         {
 358                 return (-1);
 359         }
 360
 361         return (0);
 362 }
 363
 364 static int ps_init (void)
 365 {
 366 #if HAVE_THREAD_INFO
 367         kern_return_t status;
 368
 369         port_host_self = mach_host_self ();
 370         port_task_self = mach_task_self ();
 371
 372         if (pset_list != NULL)
 373         {
 374                 vm_deallocate (port_task_self,
 375                                 (vm_address_t) pset_list,
 376                                 pset_list_len * sizeof (processor_set_t));
 377                 pset_list = NULL;
 378                 pset_list_len = 0;
 379         }
 380
 381         if ((status = host_processor_sets (port_host_self,
 382                                         &pset_list,
 383                                         &pset_list_len)) != KERN_SUCCESS)
 384         {
 385                 ERROR ("host_processor_sets failed: %s\n",
 386                                 mach_error_string (status));
 387                 pset_list = NULL;
 388                 pset_list_len = 0;
 389                 return (-1);
 390         }
 391 /* #endif HAVE_THREAD_INFO */
 392
 393 #elif KERNEL_LINUX
 394         pagesize_g = sysconf(_SC_PAGESIZE);
 395         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 396                         pagesize_g, CONFIG_HZ);
 397 #endif /* KERNEL_LINUX */
 398
 399         return (0);
 400 } /* int ps_init */
 401
 402 static void ps_submit_state (const char *state, double value)
 403 {
 404         value_t values[1];
 405         value_list_t vl = VALUE_LIST_INIT;
 406
 407         values[0].gauge = value;
 408
 409         vl.values = values;
 410         vl.values_len = 1;
 411         vl.time = time (NULL);
 412         strcpy (vl.host, hostname_g);
 413         strcpy (vl.plugin, "processes");
 414         strcpy (vl.plugin_instance, "");
 415         strcpy (vl.type, "ps_state");
 416         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 417
 418         plugin_dispatch_values (&vl);
 419 }
 420
 421 static void ps_submit_proc_list (procstat_t *ps)
 422 {
 423         value_t values[2];
 424         value_list_t vl = VALUE_LIST_INIT;
 425
 426         vl.values = values;
 427         vl.values_len = 2;
 428         vl.time = time (NULL);
 429         strcpy (vl.host, hostname_g);
 430         strcpy (vl.plugin, "processes");
 431         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 432
 433         strcpy (vl.type, "ps_rss");
 434         vl.values[0].gauge = ps->vmem_rss;
 435         vl.values_len = 1;
 436         plugin_dispatch_values (&vl);
 437
 438         strcpy (vl.type, "ps_cputime");
 439         vl.values[0].counter = ps->cpu_user_counter;
 440         vl.values[1].counter = ps->cpu_system_counter;
 441         vl.values_len = 2;
 442         plugin_dispatch_values (&vl);
 443
 444         strcpy (vl.type, "ps_count");
 445         vl.values[0].gauge = ps->num_proc;
 446         vl.values[1].gauge = ps->num_lwp;
 447         vl.values_len = 2;
 448         plugin_dispatch_values (&vl);
 449
 450         strcpy (vl.type, "ps_pagefaults");
 451         vl.values[0].counter = ps->vmem_minflt_counter;
 452         vl.values[1].counter = ps->vmem_majflt_counter;
 453         vl.values_len = 2;
 454         plugin_dispatch_values (&vl);
 455
 456         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 457                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 458                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 459                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 460                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 461                         ps->cpu_user_counter, ps->cpu_system_counter);
 462 } /* void ps_submit_proc_list */
 463
 464 #if KERNEL_LINUX
 465 static int *ps_read_tasks (int pid)
 466 {
 467         int *list = NULL;
 468         int  list_size = 1; /* size of allocated space, in elements */
 469         int  list_len = 0;  /* number of currently used elements */
 470
 471         char           dirname[64];
 472         DIR           *dh;
 473         struct dirent *ent;
 474
 475         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 476
 477         if ((dh = opendir (dirname)) == NULL)
 478         {
 479                 DEBUG ("Failed to open directory `%s'", dirname);
 480                 return (NULL);
 481         }
 482
 483         while ((ent = readdir (dh)) != NULL)
 484         {
 485                 if (!isdigit (ent->d_name[0]))
 486                         continue;
 487
 488                 if ((list_len + 1) >= list_size)
 489                 {
 490                         int *new_ptr;
 491                         int  new_size = 2 * list_size;
 492                         /* Comes in sizes: 2, 4, 8, 16, ... */
 493
 494                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 495                         if (new_ptr == NULL)
 496                         {
 497                                 if (list != NULL)
 498                                         free (list);
 499                                 ERROR ("processes plugin: "
 500                                                 "Failed to allocate more memory.");
 501                                 return (NULL);
 502                         }
 503
 504                         list = new_ptr;
 505                         list_size = new_size;
 506
 507                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 508                 }
 509
 510                 list[list_len] = atoi (ent->d_name);
 511                 if (list[list_len] != 0)
 512                         list_len++;
 513         }
 514
 515         closedir (dh);
 516
 517         if (list_len == 0)
 518                 return (NULL);
 519
 520         assert (list_len < list_size);
 521         assert (list[list_len] == 0);
 522
 523         return (list);
 524 } /* int *ps_read_tasks */
 525
 526 int ps_read_process (int pid, procstat_t *ps, char *state)
 527 {
 528         char  filename[64];
 529         char  buffer[1024];
 530         FILE *fh;
 531
 532         char *fields[64];
 533         char  fields_len;
 534
 535         int  *tasks;
 536         int   i;
 537
 538         int   ppid;
 539         int   name_len;
 540
 541         long long unsigned cpu_user_counter;
 542         long long unsigned cpu_system_counter;
 543         long long unsigned vmem_rss;
 544
 545         memset (ps, 0, sizeof (procstat_t));
 546
 547         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 548
 549         if ((fh = fopen (filename, "r")) == NULL)
 550                 return (-1);
 551
 552         if (fgets (buffer, 1024, fh) == NULL)
 553         {
 554                 fclose (fh);
 555                 return (-1);
 556         }
 557
 558         fclose (fh);
 559
 560         fields_len = strsplit (buffer, fields, 64);
 561         if (fields_len < 24)
 562         {
 563                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 564                                 " `%s' has only %i fields..",
 565                                 (int) pid, filename, fields_len);
 566                 return (-1);
 567         }
 568
 569         /* copy the name, strip brackets in the process */
 570         name_len = strlen (fields[1]) - 2;
 571         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 572         {
 573                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 574                 return (-1);
 575         }
 576         fields[1] = fields[1] + 1;
 577         fields[1][name_len] = '\0';
 578         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 579
 580         ppid = atoi (fields[3]);
 581
 582         *state = fields[2][0];
 583
 584         if (*state == 'Z')
 585         {
 586                 ps->num_lwp  = 0;
 587                 ps->num_proc = 0;
 588         }
 589         else if ((tasks = ps_read_tasks (pid)) == NULL)
 590         {
 591                 /* Kernel 2.4 or so */
 592                 ps->num_lwp  = 1;
 593                 ps->num_proc = 1;
 594         }
 595         else
 596         {
 597                 ps->num_lwp  = 0;
 598                 ps->num_proc = 1;
 599                 for (i = 0; tasks[i] != 0; i++)
 600                         ps->num_lwp++;
 601
 602                 free (tasks);
 603                 tasks = NULL;
 604         }
 605
 606         /* Leave the rest at zero if this is only a zombi */
 607         if (ps->num_proc == 0)
 608         {
 609                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 610                                 "name = %s;", pid, ps->name);
 611                 return (0);
 612         }
 613
 614         cpu_user_counter   = atoll (fields[13]);
 615         cpu_system_counter = atoll (fields[14]);
 616         vmem_rss = atoll (fields[23]);
 617         ps->vmem_minflt_counter = atol (fields[9]);
 618         ps->vmem_majflt_counter = atol (fields[11]);
 619
 620         /* Convert jiffies to useconds */
 621         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 622         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 623         vmem_rss = vmem_rss * pagesize_g;
 624
 625         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 626         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 627         ps->vmem_rss = (unsigned long) vmem_rss;
 628
 629         /* success */
 630         return (0);
 631 } /* int ps_read_process (...) */
 632 #endif /* KERNEL_LINUX */
 633
 634 #if HAVE_THREAD_INFO
 635 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 636 {
 637         int mib[4];
 638
 639         struct kinfo_proc kp;
 640         size_t            kp_size;
 641
 642         mib[0] = CTL_KERN;
 643         mib[1] = KERN_PROC;
 644         mib[2] = KERN_PROC_PID;
 645
 646         if (pid_for_task (t, pid) != KERN_SUCCESS)
 647                 return (-1);
 648         mib[3] = *pid;
 649
 650         kp_size = sizeof (kp);
 651         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 652                 return (-1);
 653
 654         if (name_max_len > (MAXCOMLEN + 1))
 655                 name_max_len = MAXCOMLEN + 1;
 656
 657         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 658         name[name_max_len - 1] = '\0';
 659
 660         DEBUG ("pid = %i; name = %s;", *pid, name);
 661
 662         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 663          * `top' does it, because it is a lot of work and only used when
 664          * debugging. -octo */
 665
 666         return (0);
 667 }
 668 #endif /* HAVE_THREAD_INFO */
 669
 670 static int ps_read (void)
 671 {
 672 #if HAVE_THREAD_INFO
 673         kern_return_t            status;
 674
 675         int                      pset;
 676         processor_set_t          port_pset_priv;
 677
 678         int                      task;
 679         task_array_t             task_list;
 680         mach_msg_type_number_t   task_list_len;
 681
 682         int                      task_pid;
 683         char                     task_name[MAXCOMLEN + 1];
 684
 685         int                      thread;
 686         thread_act_array_t       thread_list;
 687         mach_msg_type_number_t   thread_list_len;
 688         thread_basic_info_data_t thread_data;
 689         mach_msg_type_number_t   thread_data_len;
 690
 691         int running  = 0;
 692         int sleeping = 0;
 693         int zombies  = 0;
 694         int stopped  = 0;
 695         int blocked  = 0;
 696
 697         procstat_t *ps;
 698         procstat_entry_t pse;
 699
 700         ps_list_reset ();
 701
 702         /*
 703          * The Mach-concept is a little different from the traditional UNIX
 704          * concept: All the work is done in threads. Threads are contained in
 705          * `tasks'. Therefore, `task status' doesn't make much sense, since
 706          * it's actually a `thread status'.
 707          * Tasks are assigned to sets of processors, so that's where you go to
 708          * get a list.
 709          */
 710         for (pset = 0; pset < pset_list_len; pset++)
 711         {
 712                 if ((status = host_processor_set_priv (port_host_self,
 713                                                 pset_list[pset],
 714                                                 &port_pset_priv)) != KERN_SUCCESS)
 715                 {
 716                         ERROR ("host_processor_set_priv failed: %s\n",
 717                                         mach_error_string (status));
 718                         continue;
 719                 }
 720
 721                 if ((status = processor_set_tasks (port_pset_priv,
 722                                                 &task_list,
 723                                                 &task_list_len)) != KERN_SUCCESS)
 724                 {
 725                         ERROR ("processor_set_tasks failed: %s\n",
 726                                         mach_error_string (status));
 727                         mach_port_deallocate (port_task_self, port_pset_priv);
 728                         continue;
 729                 }
 730
 731                 for (task = 0; task < task_list_len; task++)
 732                 {
 733                         ps = NULL;
 734                         if (mach_get_task_name (task_list[task],
 735                                                 &task_pid,
 736                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 737                                 ps = ps_list_search (task_name);
 738
 739                         /* Collect more detailed statistics for this process */
 740                         if (ps != NULL)
 741                         {
 742                                 task_basic_info_data_t        task_basic_info;
 743                                 mach_msg_type_number_t        task_basic_info_len;
 744                                 task_events_info_data_t       task_events_info;
 745                                 mach_msg_type_number_t        task_events_info_len;
 746                                 task_absolutetime_info_data_t task_absolutetime_info;
 747                                 mach_msg_type_number_t        task_absolutetime_info_len;
 748
 749                                 memset (&pse, '\0', sizeof (pse));
 750                                 pse.id = task_pid;
 751
 752                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 753                                 status = task_info (task_list[task],
 754                                                 TASK_BASIC_INFO,
 755                                                 (task_info_t) &task_basic_info,
 756                                                 &task_basic_info_len);
 757                                 if (status != KERN_SUCCESS)
 758                                 {
 759                                         ERROR ("task_info failed: %s",
 760                                                         mach_error_string (status));
 761                                         continue; /* with next thread_list */
 762                                 }
 763
 764                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 765                                 status = task_info (task_list[task],
 766                                                 TASK_EVENTS_INFO,
 767                                                 (task_info_t) &task_events_info,
 768                                                 &task_events_info_len);
 769                                 if (status != KERN_SUCCESS)
 770                                 {
 771                                         ERROR ("task_info failed: %s",
 772                                                         mach_error_string (status));
 773                                         continue; /* with next thread_list */
 774                                 }
 775
 776                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 777                                 status = task_info (task_list[task],
 778                                                 TASK_ABSOLUTETIME_INFO,
 779                                                 (task_info_t) &task_absolutetime_info,
 780                                                 &task_absolutetime_info_len);
 781                                 if (status != KERN_SUCCESS)
 782                                 {
 783                                         ERROR ("task_info failed: %s",
 784                                                         mach_error_string (status));
 785                                         continue; /* with next thread_list */
 786                                 }
 787
 788                                 pse.num_proc++;
 789                                 pse.vmem_rss = task_basic_info.resident_size;
 790
 791                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 792                                 pse.vmem_majflt_counter = task_events_info.faults;
 793
 794                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 795                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 796                         }
 797
 798                         status = task_threads (task_list[task], &thread_list,
 799                                         &thread_list_len);
 800                         if (status != KERN_SUCCESS)
 801                         {
 802                                 /* Apple's `top' treats this case a zombie. It
 803                                  * makes sense to some extend: A `zombie'
 804                                  * thread is nonsense, since the task/process
 805                                  * is dead. */
 806                                 zombies++;
 807                                 DEBUG ("task_threads failed: %s",
 808                                                 mach_error_string (status));
 809                                 if (task_list[task] != port_task_self)
 810                                         mach_port_deallocate (port_task_self,
 811                                                         task_list[task]);
 812                                 continue; /* with next task_list */
 813                         }
 814
 815                         for (thread = 0; thread < thread_list_len; thread++)
 816                         {
 817                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 818                                 status = thread_info (thread_list[thread],
 819                                                 THREAD_BASIC_INFO,
 820                                                 (thread_info_t) &thread_data,
 821                                                 &thread_data_len);
 822                                 if (status != KERN_SUCCESS)
 823                                 {
 824                                         ERROR ("thread_info failed: %s",
 825                                                         mach_error_string (status));
 826                                         if (task_list[task] != port_task_self)
 827                                                 mach_port_deallocate (port_task_self,
 828                                                                 thread_list[thread]);
 829                                         continue; /* with next thread_list */
 830                                 }
 831
 832                                 if (ps != NULL)
 833                                         pse.num_lwp++;
 834
 835                                 switch (thread_data.run_state)
 836                                 {
 837                                         case TH_STATE_RUNNING:
 838                                                 running++;
 839                                                 break;
 840                                         case TH_STATE_STOPPED:
 841                                         /* What exactly is `halted'? */
 842                                         case TH_STATE_HALTED:
 843                                                 stopped++;
 844                                                 break;
 845                                         case TH_STATE_WAITING:
 846                                                 sleeping++;
 847                                                 break;
 848                                         case TH_STATE_UNINTERRUPTIBLE:
 849                                                 blocked++;
 850                                                 break;
 851                                         /* There is no `zombie' case here,
 852                                          * since there are no zombie-threads.
 853                                          * There's only zombie tasks, which are
 854                                          * handled above. */
 855                                         default:
 856                                                 WARNING ("Unknown thread status: %s",
 857                                                                 thread_data.run_state);
 858                                                 break;
 859                                 } /* switch (thread_data.run_state) */
 860
 861                                 if (task_list[task] != port_task_self)
 862                                 {
 863                                         status = mach_port_deallocate (port_task_self,
 864                                                         thread_list[thread]);
 865                                         if (status != KERN_SUCCESS)
 866                                                 ERROR ("mach_port_deallocate failed: %s",
 867                                                                 mach_error_string (status));
 868                                 }
 869                         } /* for (thread_list) */
 870
 871                         if ((status = vm_deallocate (port_task_self,
 872                                                         (vm_address_t) thread_list,
 873                                                         thread_list_len * sizeof (thread_act_t)))
 874                                         != KERN_SUCCESS)
 875                         {
 876                                 ERROR ("vm_deallocate failed: %s",
 877                                                 mach_error_string (status));
 878                         }
 879                         thread_list = NULL;
 880                         thread_list_len = 0;
 881
 882                         /* Only deallocate the task port, if it isn't our own.
 883                          * Don't know what would happen in that case, but this
 884                          * is what Apple's top does.. ;) */
 885                         if (task_list[task] != port_task_self)
 886                         {
 887                                 status = mach_port_deallocate (port_task_self,
 888                                                 task_list[task]);
 889                                 if (status != KERN_SUCCESS)
 890                                         ERROR ("mach_port_deallocate failed: %s",
 891                                                         mach_error_string (status));
 892                         }
 893
 894                         if (ps != NULL)
 895                                 ps_list_add (task_name, &pse);
 896                 } /* for (task_list) */
 897
 898                 if ((status = vm_deallocate (port_task_self,
 899                                 (vm_address_t) task_list,
 900                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 901                 {
 902                         ERROR ("vm_deallocate failed: %s",
 903                                         mach_error_string (status));
 904                 }
 905                 task_list = NULL;
 906                 task_list_len = 0;
 907
 908                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 909                                 != KERN_SUCCESS)
 910                 {
 911                         ERROR ("mach_port_deallocate failed: %s",
 912                                         mach_error_string (status));
 913                 }
 914         } /* for (pset_list) */
 915
 916         ps_submit_state ("running", running);
 917         ps_submit_state ("sleeping", sleeping);
 918         ps_submit_state ("zombies", zombies);
 919         ps_submit_state ("stopped", stopped);
 920         ps_submit_state ("blocked", blocked);
 921
 922         for (ps = list_head_g; ps != NULL; ps = ps->next)
 923                 ps_submit_proc_list (ps);
 924 /* #endif HAVE_THREAD_INFO */
 925
 926 #elif KERNEL_LINUX
 927         int running  = 0;
 928         int sleeping = 0;
 929         int zombies  = 0;
 930         int stopped  = 0;
 931         int paging   = 0;
 932         int blocked  = 0;
 933
 934         struct dirent *ent;
 935         DIR           *proc;
 936         int            pid;
 937
 938         int        status;
 939         procstat_t ps;
 940         procstat_entry_t pse;
 941         char       state;
 942
 943         procstat_t *ps_ptr;
 944
 945         running = sleeping = zombies = stopped = paging = blocked = 0;
 946         ps_list_reset ();
 947
 948         if ((proc = opendir ("/proc")) == NULL)
 949         {
 950                 char errbuf[1024];
 951                 ERROR ("Cannot open `/proc': %s",
 952                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 953                 return (-1);
 954         }
 955
 956         while ((ent = readdir (proc)) != NULL)
 957         {
 958                 if (!isdigit (ent->d_name[0]))
 959                         continue;
 960
 961                 if ((pid = atoi (ent->d_name)) < 1)
 962                         continue;
 963
 964                 status = ps_read_process (pid, &ps, &state);
 965                 if (status != 0)
 966                 {
 967                         DEBUG ("ps_read_process failed: %i", status);
 968                         continue;
 969                 }
 970
 971                 pse.id       = pid;
 972                 pse.age      = 0;
 973
 974                 pse.num_proc = ps.num_proc;
 975                 pse.num_lwp  = ps.num_lwp;
 976                 pse.vmem_rss = ps.vmem_rss;
 977
 978                 pse.vmem_minflt = 0;
 979                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
 980                 pse.vmem_majflt = 0;
 981                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
 982
 983                 pse.cpu_user = 0;
 984                 pse.cpu_user_counter = ps.cpu_user_counter;
 985                 pse.cpu_system = 0;
 986                 pse.cpu_system_counter = ps.cpu_system_counter;
 987
 988                 switch (state)
 989                 {
 990                         case 'R': running++;  break;
 991                         case 'S': sleeping++; break;
 992                         case 'D': blocked++;  break;
 993                         case 'Z': zombies++;  break;
 994                         case 'T': stopped++;  break;
 995                         case 'W': paging++;   break;
 996                 }
 997
 998                 ps_list_add (ps.name, &pse);
 999         }
1000
1001         closedir (proc);
1002
1003         ps_submit_state ("running",  running);
1004         ps_submit_state ("sleeping", sleeping);
1005         ps_submit_state ("zombies",  zombies);
1006         ps_submit_state ("stopped",  stopped);
1007         ps_submit_state ("paging",   paging);
1008         ps_submit_state ("blocked",  blocked);
1009
1010         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1011                 ps_submit_proc_list (ps_ptr);
1012 #endif /* KERNEL_LINUX */
1013
1014         return (0);
1015 } /* int ps_read */
1016
1017 void module_register (void)
1018 {
1019         plugin_register_config ("processes", ps_config,
1020                         config_keys, config_keys_num);
1021         plugin_register_init ("processes", ps_init);
1022         plugin_register_read ("processes", ps_read);
1023 } /* void module_register */