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         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 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         strncpy (vl.type_instance, state, sizeof (vl.type_instance));
 416
 417         plugin_dispatch_values ("ps_state", &vl);
 418 }
 419
 420 static void ps_submit_proc_list (procstat_t *ps)
 421 {
 422         value_t values[2];
 423         value_list_t vl = VALUE_LIST_INIT;
 424
 425         vl.values = values;
 426         vl.values_len = 2;
 427         vl.time = time (NULL);
 428         strcpy (vl.host, hostname_g);
 429         strcpy (vl.plugin, "processes");
 430         strncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 431
 432         vl.values[0].gauge = ps->vmem_rss;
 433         vl.values_len = 1;
 434         plugin_dispatch_values ("ps_rss", &vl);
 435
 436         vl.values[0].counter = ps->cpu_user_counter;
 437         vl.values[1].counter = ps->cpu_system_counter;
 438         vl.values_len = 2;
 439         plugin_dispatch_values ("ps_cputime", &vl);
 440
 441         vl.values[0].gauge = ps->num_proc;
 442         vl.values[1].gauge = ps->num_lwp;
 443         vl.values_len = 2;
 444         plugin_dispatch_values ("ps_count", &vl);
 445
 446         vl.values[0].counter = ps->vmem_minflt_counter;
 447         vl.values[1].counter = ps->vmem_majflt_counter;
 448         vl.values_len = 2;
 449         plugin_dispatch_values ("ps_pagefaults", &vl);
 450
 451         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 452                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 453                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 454                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 455                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 456                         ps->cpu_user_counter, ps->cpu_system_counter);
 457 } /* void ps_submit_proc_list */
 458
 459 #if KERNEL_LINUX
 460 static int *ps_read_tasks (int pid)
 461 {
 462         int *list = NULL;
 463         int  list_size = 1; /* size of allocated space, in elements */
 464         int  list_len = 0;  /* number of currently used elements */
 465
 466         char           dirname[64];
 467         DIR           *dh;
 468         struct dirent *ent;
 469
 470         snprintf (dirname, 64, "/proc/%i/task", pid);
 471         dirname[63] = '\0';
 472
 473         if ((dh = opendir (dirname)) == NULL)
 474         {
 475                 DEBUG ("Failed to open directory `%s'", dirname);
 476                 return (NULL);
 477         }
 478
 479         while ((ent = readdir (dh)) != NULL)
 480         {
 481                 if (!isdigit (ent->d_name[0]))
 482                         continue;
 483
 484                 if ((list_len + 1) >= list_size)
 485                 {
 486                         int *new_ptr;
 487                         int  new_size = 2 * list_size;
 488                         /* Comes in sizes: 2, 4, 8, 16, ... */
 489
 490                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 491                         if (new_ptr == NULL)
 492                         {
 493                                 if (list != NULL)
 494                                         free (list);
 495                                 ERROR ("processes plugin: "
 496                                                 "Failed to allocate more memory.");
 497                                 return (NULL);
 498                         }
 499
 500                         list = new_ptr;
 501                         list_size = new_size;
 502
 503                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 504                 }
 505
 506                 list[list_len] = atoi (ent->d_name);
 507                 if (list[list_len] != 0)
 508                         list_len++;
 509         }
 510
 511         closedir (dh);
 512
 513         if (list_len == 0)
 514                 return (NULL);
 515
 516         assert (list_len < list_size);
 517         assert (list[list_len] == 0);
 518
 519         return (list);
 520 } /* int *ps_read_tasks */
 521
 522 int ps_read_process (int pid, procstat_t *ps, char *state)
 523 {
 524         char  filename[64];
 525         char  buffer[1024];
 526         FILE *fh;
 527
 528         char *fields[64];
 529         char  fields_len;
 530
 531         int  *tasks;
 532         int   i;
 533
 534         int   ppid;
 535         int   name_len;
 536
 537         long long unsigned cpu_user_counter;
 538         long long unsigned cpu_system_counter;
 539         long long unsigned vmem_rss;
 540
 541         memset (ps, 0, sizeof (procstat_t));
 542
 543         snprintf (filename, 64, "/proc/%i/stat", pid);
 544         filename[63] = '\0';
 545
 546         if ((fh = fopen (filename, "r")) == NULL)
 547                 return (-1);
 548
 549         if (fgets (buffer, 1024, fh) == NULL)
 550         {
 551                 fclose (fh);
 552                 return (-1);
 553         }
 554
 555         fclose (fh);
 556
 557         fields_len = strsplit (buffer, fields, 64);
 558         if (fields_len < 24)
 559         {
 560                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 561                                 " `%s' has only %i fields..",
 562                                 (int) pid, filename, fields_len);
 563                 return (-1);
 564         }
 565
 566         /* copy the name, strip brackets in the process */
 567         name_len = strlen (fields[1]) - 2;
 568         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 569         {
 570                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 571                 return (-1);
 572         }
 573         fields[1] = fields[1] + 1;
 574         fields[1][name_len] = '\0';
 575         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 576
 577         ppid = atoi (fields[3]);
 578
 579         *state = fields[2][0];
 580
 581         if (*state == 'Z')
 582         {
 583                 ps->num_lwp  = 0;
 584                 ps->num_proc = 0;
 585         }
 586         else if ((tasks = ps_read_tasks (pid)) == NULL)
 587         {
 588                 /* Kernel 2.4 or so */
 589                 ps->num_lwp  = 1;
 590                 ps->num_proc = 1;
 591         }
 592         else
 593         {
 594                 ps->num_lwp  = 0;
 595                 ps->num_proc = 1;
 596                 for (i = 0; tasks[i] != 0; i++)
 597                         ps->num_lwp++;
 598
 599                 free (tasks);
 600                 tasks = NULL;
 601         }
 602
 603         /* Leave the rest at zero if this is only a zombi */
 604         if (ps->num_proc == 0)
 605         {
 606                 DEBUG ("This is only a zombi: pid = %i; name = %s;",
 607                                 pid, ps->name);
 608                 return (0);
 609         }
 610
 611         cpu_user_counter   = atoll (fields[13]);
 612         cpu_system_counter = atoll (fields[14]);
 613         vmem_rss = atoll (fields[23]);
 614         ps->vmem_minflt_counter = atol (fields[9]);
 615         ps->vmem_majflt_counter = atol (fields[11]);
 616
 617         /* Convert jiffies to useconds */
 618         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 619         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 620         vmem_rss = vmem_rss * pagesize_g;
 621
 622         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 623         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 624         ps->vmem_rss = (unsigned long) vmem_rss;
 625
 626         /* success */
 627         return (0);
 628 } /* int ps_read_process (...) */
 629 #endif /* KERNEL_LINUX */
 630
 631 #if HAVE_THREAD_INFO
 632 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 633 {
 634         int mib[4];
 635
 636         struct kinfo_proc kp;
 637         size_t            kp_size;
 638
 639         mib[0] = CTL_KERN;
 640         mib[1] = KERN_PROC;
 641         mib[2] = KERN_PROC_PID;
 642
 643         if (pid_for_task (t, pid) != KERN_SUCCESS)
 644                 return (-1);
 645         mib[3] = *pid;
 646
 647         kp_size = sizeof (kp);
 648         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 649                 return (-1);
 650
 651         if (name_max_len > (MAXCOMLEN + 1))
 652                 name_max_len = MAXCOMLEN + 1;
 653
 654         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 655         name[name_max_len - 1] = '\0';
 656
 657         DEBUG ("pid = %i; name = %s;", *pid, name);
 658
 659         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 660          * `top' does it, because it is a lot of work and only used when
 661          * debugging. -octo */
 662
 663         return (0);
 664 }
 665 #endif /* HAVE_THREAD_INFO */
 666
 667 static int ps_read (void)
 668 {
 669 #if HAVE_THREAD_INFO
 670         kern_return_t            status;
 671
 672         int                      pset;
 673         processor_set_t          port_pset_priv;
 674
 675         int                      task;
 676         task_array_t             task_list;
 677         mach_msg_type_number_t   task_list_len;
 678
 679         int                      task_pid;
 680         char                     task_name[MAXCOMLEN + 1];
 681
 682         int                      thread;
 683         thread_act_array_t       thread_list;
 684         mach_msg_type_number_t   thread_list_len;
 685         thread_basic_info_data_t thread_data;
 686         mach_msg_type_number_t   thread_data_len;
 687
 688         int running  = 0;
 689         int sleeping = 0;
 690         int zombies  = 0;
 691         int stopped  = 0;
 692         int blocked  = 0;
 693
 694         procstat_t *ps;
 695         procstat_entry_t pse;
 696
 697         ps_list_reset ();
 698
 699         /*
 700          * The Mach-concept is a little different from the traditional UNIX
 701          * concept: All the work is done in threads. Threads are contained in
 702          * `tasks'. Therefore, `task status' doesn't make much sense, since
 703          * it's actually a `thread status'.
 704          * Tasks are assigned to sets of processors, so that's where you go to
 705          * get a list.
 706          */
 707         for (pset = 0; pset < pset_list_len; pset++)
 708         {
 709                 if ((status = host_processor_set_priv (port_host_self,
 710                                                 pset_list[pset],
 711                                                 &port_pset_priv)) != KERN_SUCCESS)
 712                 {
 713                         ERROR ("host_processor_set_priv failed: %s\n",
 714                                         mach_error_string (status));
 715                         continue;
 716                 }
 717
 718                 if ((status = processor_set_tasks (port_pset_priv,
 719                                                 &task_list,
 720                                                 &task_list_len)) != KERN_SUCCESS)
 721                 {
 722                         ERROR ("processor_set_tasks failed: %s\n",
 723                                         mach_error_string (status));
 724                         mach_port_deallocate (port_task_self, port_pset_priv);
 725                         continue;
 726                 }
 727
 728                 for (task = 0; task < task_list_len; task++)
 729                 {
 730                         ps = NULL;
 731                         if (mach_get_task_name (task_list[task],
 732                                                 &task_pid,
 733                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 734                                 ps = ps_list_search (task_name);
 735
 736                         /* Collect more detailed statistics for this process */
 737                         if (ps != NULL)
 738                         {
 739                                 task_basic_info_data_t        task_basic_info;
 740                                 mach_msg_type_number_t        task_basic_info_len;
 741                                 task_events_info_data_t       task_events_info;
 742                                 mach_msg_type_number_t        task_events_info_len;
 743                                 task_absolutetime_info_data_t task_absolutetime_info;
 744                                 mach_msg_type_number_t        task_absolutetime_info_len;
 745
 746                                 memset (&pse, '\0', sizeof (pse));
 747                                 pse.id = task_pid;
 748
 749                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 750                                 status = task_info (task_list[task],
 751                                                 TASK_BASIC_INFO,
 752                                                 (task_info_t) &task_basic_info,
 753                                                 &task_basic_info_len);
 754                                 if (status != KERN_SUCCESS)
 755                                 {
 756                                         ERROR ("task_info failed: %s",
 757                                                         mach_error_string (status));
 758                                         continue; /* with next thread_list */
 759                                 }
 760
 761                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 762                                 status = task_info (task_list[task],
 763                                                 TASK_EVENTS_INFO,
 764                                                 (task_info_t) &task_events_info,
 765                                                 &task_events_info_len);
 766                                 if (status != KERN_SUCCESS)
 767                                 {
 768                                         ERROR ("task_info failed: %s",
 769                                                         mach_error_string (status));
 770                                         continue; /* with next thread_list */
 771                                 }
 772
 773                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 774                                 status = task_info (task_list[task],
 775                                                 TASK_ABSOLUTETIME_INFO,
 776                                                 (task_info_t) &task_absolutetime_info,
 777                                                 &task_absolutetime_info_len);
 778                                 if (status != KERN_SUCCESS)
 779                                 {
 780                                         ERROR ("task_info failed: %s",
 781                                                         mach_error_string (status));
 782                                         continue; /* with next thread_list */
 783                                 }
 784
 785                                 pse.num_proc++;
 786                                 pse.vmem_rss = task_basic_info.resident_size;
 787
 788                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 789                                 pse.vmem_majflt_counter = task_events_info.faults;
 790
 791                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 792                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 793                         }
 794
 795                         status = task_threads (task_list[task], &thread_list,
 796                                         &thread_list_len);
 797                         if (status != KERN_SUCCESS)
 798                         {
 799                                 /* Apple's `top' treats this case a zombie. It
 800                                  * makes sense to some extend: A `zombie'
 801                                  * thread is nonsense, since the task/process
 802                                  * is dead. */
 803                                 zombies++;
 804                                 DEBUG ("task_threads failed: %s",
 805                                                 mach_error_string (status));
 806                                 if (task_list[task] != port_task_self)
 807                                         mach_port_deallocate (port_task_self,
 808                                                         task_list[task]);
 809                                 continue; /* with next task_list */
 810                         }
 811
 812                         for (thread = 0; thread < thread_list_len; thread++)
 813                         {
 814                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 815                                 status = thread_info (thread_list[thread],
 816                                                 THREAD_BASIC_INFO,
 817                                                 (thread_info_t) &thread_data,
 818                                                 &thread_data_len);
 819                                 if (status != KERN_SUCCESS)
 820                                 {
 821                                         ERROR ("thread_info failed: %s",
 822                                                         mach_error_string (status));
 823                                         if (task_list[task] != port_task_self)
 824                                                 mach_port_deallocate (port_task_self,
 825                                                                 thread_list[thread]);
 826                                         continue; /* with next thread_list */
 827                                 }
 828
 829                                 if (ps != NULL)
 830                                         pse.num_lwp++;
 831
 832                                 switch (thread_data.run_state)
 833                                 {
 834                                         case TH_STATE_RUNNING:
 835                                                 running++;
 836                                                 break;
 837                                         case TH_STATE_STOPPED:
 838                                         /* What exactly is `halted'? */
 839                                         case TH_STATE_HALTED:
 840                                                 stopped++;
 841                                                 break;
 842                                         case TH_STATE_WAITING:
 843                                                 sleeping++;
 844                                                 break;
 845                                         case TH_STATE_UNINTERRUPTIBLE:
 846                                                 blocked++;
 847                                                 break;
 848                                         /* There is no `zombie' case here,
 849                                          * since there are no zombie-threads.
 850                                          * There's only zombie tasks, which are
 851                                          * handled above. */
 852                                         default:
 853                                                 WARNING ("Unknown thread status: %s",
 854                                                                 thread_data.run_state);
 855                                                 break;
 856                                 } /* switch (thread_data.run_state) */
 857
 858                                 if (task_list[task] != port_task_self)
 859                                 {
 860                                         status = mach_port_deallocate (port_task_self,
 861                                                         thread_list[thread]);
 862                                         if (status != KERN_SUCCESS)
 863                                                 ERROR ("mach_port_deallocate failed: %s",
 864                                                                 mach_error_string (status));
 865                                 }
 866                         } /* for (thread_list) */
 867
 868                         if ((status = vm_deallocate (port_task_self,
 869                                                         (vm_address_t) thread_list,
 870                                                         thread_list_len * sizeof (thread_act_t)))
 871                                         != KERN_SUCCESS)
 872                         {
 873                                 ERROR ("vm_deallocate failed: %s",
 874                                                 mach_error_string (status));
 875                         }
 876                         thread_list = NULL;
 877                         thread_list_len = 0;
 878
 879                         /* Only deallocate the task port, if it isn't our own.
 880                          * Don't know what would happen in that case, but this
 881                          * is what Apple's top does.. ;) */
 882                         if (task_list[task] != port_task_self)
 883                         {
 884                                 status = mach_port_deallocate (port_task_self,
 885                                                 task_list[task]);
 886                                 if (status != KERN_SUCCESS)
 887                                         ERROR ("mach_port_deallocate failed: %s",
 888                                                         mach_error_string (status));
 889                         }
 890
 891                         if (ps != NULL)
 892                                 ps_list_add (task_name, &pse);
 893                 } /* for (task_list) */
 894
 895                 if ((status = vm_deallocate (port_task_self,
 896                                 (vm_address_t) task_list,
 897                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 898                 {
 899                         ERROR ("vm_deallocate failed: %s",
 900                                         mach_error_string (status));
 901                 }
 902                 task_list = NULL;
 903                 task_list_len = 0;
 904
 905                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 906                                 != KERN_SUCCESS)
 907                 {
 908                         ERROR ("mach_port_deallocate failed: %s",
 909                                         mach_error_string (status));
 910                 }
 911         } /* for (pset_list) */
 912
 913         ps_submit_state ("running", running);
 914         ps_submit_state ("sleeping", sleeping);
 915         ps_submit_state ("zombies", zombies);
 916         ps_submit_state ("stopped", stopped);
 917         ps_submit_state ("blocked", blocked);
 918
 919         for (ps = list_head_g; ps != NULL; ps = ps->next)
 920                 ps_submit_proc_list (ps);
 921 /* #endif HAVE_THREAD_INFO */
 922
 923 #elif KERNEL_LINUX
 924         int running  = 0;
 925         int sleeping = 0;
 926         int zombies  = 0;
 927         int stopped  = 0;
 928         int paging   = 0;
 929         int blocked  = 0;
 930
 931         struct dirent *ent;
 932         DIR           *proc;
 933         int            pid;
 934
 935         int        status;
 936         procstat_t ps;
 937         procstat_entry_t pse;
 938         char       state;
 939
 940         procstat_t *ps_ptr;
 941
 942         running = sleeping = zombies = stopped = paging = blocked = 0;
 943         ps_list_reset ();
 944
 945         if ((proc = opendir ("/proc")) == NULL)
 946         {
 947                 char errbuf[1024];
 948                 ERROR ("Cannot open `/proc': %s",
 949                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 950                 return (-1);
 951         }
 952
 953         while ((ent = readdir (proc)) != NULL)
 954         {
 955                 if (!isdigit (ent->d_name[0]))
 956                         continue;
 957
 958                 if ((pid = atoi (ent->d_name)) < 1)
 959                         continue;
 960
 961                 status = ps_read_process (pid, &ps, &state);
 962                 if (status != 0)
 963                 {
 964                         DEBUG ("ps_read_process failed: %i", status);
 965                         continue;
 966                 }
 967
 968                 pse.id       = pid;
 969                 pse.age      = 0;
 970
 971                 pse.num_proc = ps.num_proc;
 972                 pse.num_lwp  = ps.num_lwp;
 973                 pse.vmem_rss = ps.vmem_rss;
 974
 975                 pse.vmem_minflt = 0;
 976                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
 977                 pse.vmem_majflt = 0;
 978                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
 979
 980                 pse.cpu_user = 0;
 981                 pse.cpu_user_counter = ps.cpu_user_counter;
 982                 pse.cpu_system = 0;
 983                 pse.cpu_system_counter = ps.cpu_system_counter;
 984
 985                 switch (state)
 986                 {
 987                         case 'R': running++;  break;
 988                         case 'S': sleeping++; break;
 989                         case 'D': blocked++;  break;
 990                         case 'Z': zombies++;  break;
 991                         case 'T': stopped++;  break;
 992                         case 'W': paging++;   break;
 993                 }
 994
 995                 ps_list_add (ps.name, &pse);
 996         }
 997
 998         closedir (proc);
 999
1000         ps_submit_state ("running",  running);
1001         ps_submit_state ("sleeping", sleeping);
1002         ps_submit_state ("zombies",  zombies);
1003         ps_submit_state ("stopped",  stopped);
1004         ps_submit_state ("paging",   paging);
1005         ps_submit_state ("blocked",  blocked);
1006
1007         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1008                 ps_submit_proc_list (ps_ptr);
1009 #endif /* KERNEL_LINUX */
1010
1011         return (0);
1012 } /* int ps_read */
1013
1014 void module_register (void)
1015 {
1016         plugin_register_config ("processes", ps_config,
1017                         config_keys, config_keys_num);
1018         plugin_register_init ("processes", ps_init);
1019         plugin_register_read ("processes", ps_read);
1020 } /* void module_register */