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         strcpy (vl.type, "ps_state");
 416         strncpy (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         strncpy (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         snprintf (dirname, 64, "/proc/%i/task", pid);
 476         dirname[63] = '\0';
 477
 478         if ((dh = opendir (dirname)) == NULL)
 479         {
 480                 DEBUG ("Failed to open directory `%s'", dirname);
 481                 return (NULL);
 482         }
 483
 484         while ((ent = readdir (dh)) != NULL)
 485         {
 486                 if (!isdigit (ent->d_name[0]))
 487                         continue;
 488
 489                 if ((list_len + 1) >= list_size)
 490                 {
 491                         int *new_ptr;
 492                         int  new_size = 2 * list_size;
 493                         /* Comes in sizes: 2, 4, 8, 16, ... */
 494
 495                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 496                         if (new_ptr == NULL)
 497                         {
 498                                 if (list != NULL)
 499                                         free (list);
 500                                 ERROR ("processes plugin: "
 501                                                 "Failed to allocate more memory.");
 502                                 return (NULL);
 503                         }
 504
 505                         list = new_ptr;
 506                         list_size = new_size;
 507
 508                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 509                 }
 510
 511                 list[list_len] = atoi (ent->d_name);
 512                 if (list[list_len] != 0)
 513                         list_len++;
 514         }
 515
 516         closedir (dh);
 517
 518         if (list_len == 0)
 519                 return (NULL);
 520
 521         assert (list_len < list_size);
 522         assert (list[list_len] == 0);
 523
 524         return (list);
 525 } /* int *ps_read_tasks */
 526
 527 int ps_read_process (int pid, procstat_t *ps, char *state)
 528 {
 529         char  filename[64];
 530         char  buffer[1024];
 531         FILE *fh;
 532
 533         char *fields[64];
 534         char  fields_len;
 535
 536         int  *tasks;
 537         int   i;
 538
 539         int   ppid;
 540         int   name_len;
 541
 542         long long unsigned cpu_user_counter;
 543         long long unsigned cpu_system_counter;
 544         long long unsigned vmem_rss;
 545
 546         memset (ps, 0, sizeof (procstat_t));
 547
 548         snprintf (filename, 64, "/proc/%i/stat", pid);
 549         filename[63] = '\0';
 550
 551         if ((fh = fopen (filename, "r")) == NULL)
 552                 return (-1);
 553
 554         if (fgets (buffer, 1024, fh) == NULL)
 555         {
 556                 fclose (fh);
 557                 return (-1);
 558         }
 559
 560         fclose (fh);
 561
 562         fields_len = strsplit (buffer, fields, 64);
 563         if (fields_len < 24)
 564         {
 565                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 566                                 " `%s' has only %i fields..",
 567                                 (int) pid, filename, fields_len);
 568                 return (-1);
 569         }
 570
 571         /* copy the name, strip brackets in the process */
 572         name_len = strlen (fields[1]) - 2;
 573         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 574         {
 575                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 576                 return (-1);
 577         }
 578         fields[1] = fields[1] + 1;
 579         fields[1][name_len] = '\0';
 580         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 581
 582         ppid = atoi (fields[3]);
 583
 584         *state = fields[2][0];
 585
 586         if (*state == 'Z')
 587         {
 588                 ps->num_lwp  = 0;
 589                 ps->num_proc = 0;
 590         }
 591         else if ((tasks = ps_read_tasks (pid)) == NULL)
 592         {
 593                 /* Kernel 2.4 or so */
 594                 ps->num_lwp  = 1;
 595                 ps->num_proc = 1;
 596         }
 597         else
 598         {
 599                 ps->num_lwp  = 0;
 600                 ps->num_proc = 1;
 601                 for (i = 0; tasks[i] != 0; i++)
 602                         ps->num_lwp++;
 603
 604                 free (tasks);
 605                 tasks = NULL;
 606         }
 607
 608         /* Leave the rest at zero if this is only a zombi */
 609         if (ps->num_proc == 0)
 610         {
 611                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 612                                 "name = %s;", pid, ps->name);
 613                 return (0);
 614         }
 615
 616         cpu_user_counter   = atoll (fields[13]);
 617         cpu_system_counter = atoll (fields[14]);
 618         vmem_rss = atoll (fields[23]);
 619         ps->vmem_minflt_counter = atol (fields[9]);
 620         ps->vmem_majflt_counter = atol (fields[11]);
 621
 622         /* Convert jiffies to useconds */
 623         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 624         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 625         vmem_rss = vmem_rss * pagesize_g;
 626
 627         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 628         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 629         ps->vmem_rss = (unsigned long) vmem_rss;
 630
 631         /* success */
 632         return (0);
 633 } /* int ps_read_process (...) */
 634 #endif /* KERNEL_LINUX */
 635
 636 #if HAVE_THREAD_INFO
 637 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 638 {
 639         int mib[4];
 640
 641         struct kinfo_proc kp;
 642         size_t            kp_size;
 643
 644         mib[0] = CTL_KERN;
 645         mib[1] = KERN_PROC;
 646         mib[2] = KERN_PROC_PID;
 647
 648         if (pid_for_task (t, pid) != KERN_SUCCESS)
 649                 return (-1);
 650         mib[3] = *pid;
 651
 652         kp_size = sizeof (kp);
 653         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 654                 return (-1);
 655
 656         if (name_max_len > (MAXCOMLEN + 1))
 657                 name_max_len = MAXCOMLEN + 1;
 658
 659         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 660         name[name_max_len - 1] = '\0';
 661
 662         DEBUG ("pid = %i; name = %s;", *pid, name);
 663
 664         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 665          * `top' does it, because it is a lot of work and only used when
 666          * debugging. -octo */
 667
 668         return (0);
 669 }
 670 #endif /* HAVE_THREAD_INFO */
 671
 672 static int ps_read (void)
 673 {
 674 #if HAVE_THREAD_INFO
 675         kern_return_t            status;
 676
 677         int                      pset;
 678         processor_set_t          port_pset_priv;
 679
 680         int                      task;
 681         task_array_t             task_list;
 682         mach_msg_type_number_t   task_list_len;
 683
 684         int                      task_pid;
 685         char                     task_name[MAXCOMLEN + 1];
 686
 687         int                      thread;
 688         thread_act_array_t       thread_list;
 689         mach_msg_type_number_t   thread_list_len;
 690         thread_basic_info_data_t thread_data;
 691         mach_msg_type_number_t   thread_data_len;
 692
 693         int running  = 0;
 694         int sleeping = 0;
 695         int zombies  = 0;
 696         int stopped  = 0;
 697         int blocked  = 0;
 698
 699         procstat_t *ps;
 700         procstat_entry_t pse;
 701
 702         ps_list_reset ();
 703
 704         /*
 705          * The Mach-concept is a little different from the traditional UNIX
 706          * concept: All the work is done in threads. Threads are contained in
 707          * `tasks'. Therefore, `task status' doesn't make much sense, since
 708          * it's actually a `thread status'.
 709          * Tasks are assigned to sets of processors, so that's where you go to
 710          * get a list.
 711          */
 712         for (pset = 0; pset < pset_list_len; pset++)
 713         {
 714                 if ((status = host_processor_set_priv (port_host_self,
 715                                                 pset_list[pset],
 716                                                 &port_pset_priv)) != KERN_SUCCESS)
 717                 {
 718                         ERROR ("host_processor_set_priv failed: %s\n",
 719                                         mach_error_string (status));
 720                         continue;
 721                 }
 722
 723                 if ((status = processor_set_tasks (port_pset_priv,
 724                                                 &task_list,
 725                                                 &task_list_len)) != KERN_SUCCESS)
 726                 {
 727                         ERROR ("processor_set_tasks failed: %s\n",
 728                                         mach_error_string (status));
 729                         mach_port_deallocate (port_task_self, port_pset_priv);
 730                         continue;
 731                 }
 732
 733                 for (task = 0; task < task_list_len; task++)
 734                 {
 735                         ps = NULL;
 736                         if (mach_get_task_name (task_list[task],
 737                                                 &task_pid,
 738                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 739                                 ps = ps_list_search (task_name);
 740
 741                         /* Collect more detailed statistics for this process */
 742                         if (ps != NULL)
 743                         {
 744                                 task_basic_info_data_t        task_basic_info;
 745                                 mach_msg_type_number_t        task_basic_info_len;
 746                                 task_events_info_data_t       task_events_info;
 747                                 mach_msg_type_number_t        task_events_info_len;
 748                                 task_absolutetime_info_data_t task_absolutetime_info;
 749                                 mach_msg_type_number_t        task_absolutetime_info_len;
 750
 751                                 memset (&pse, '\0', sizeof (pse));
 752                                 pse.id = task_pid;
 753
 754                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 755                                 status = task_info (task_list[task],
 756                                                 TASK_BASIC_INFO,
 757                                                 (task_info_t) &task_basic_info,
 758                                                 &task_basic_info_len);
 759                                 if (status != KERN_SUCCESS)
 760                                 {
 761                                         ERROR ("task_info failed: %s",
 762                                                         mach_error_string (status));
 763                                         continue; /* with next thread_list */
 764                                 }
 765
 766                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 767                                 status = task_info (task_list[task],
 768                                                 TASK_EVENTS_INFO,
 769                                                 (task_info_t) &task_events_info,
 770                                                 &task_events_info_len);
 771                                 if (status != KERN_SUCCESS)
 772                                 {
 773                                         ERROR ("task_info failed: %s",
 774                                                         mach_error_string (status));
 775                                         continue; /* with next thread_list */
 776                                 }
 777
 778                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 779                                 status = task_info (task_list[task],
 780                                                 TASK_ABSOLUTETIME_INFO,
 781                                                 (task_info_t) &task_absolutetime_info,
 782                                                 &task_absolutetime_info_len);
 783                                 if (status != KERN_SUCCESS)
 784                                 {
 785                                         ERROR ("task_info failed: %s",
 786                                                         mach_error_string (status));
 787                                         continue; /* with next thread_list */
 788                                 }
 789
 790                                 pse.num_proc++;
 791                                 pse.vmem_rss = task_basic_info.resident_size;
 792
 793                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 794                                 pse.vmem_majflt_counter = task_events_info.faults;
 795
 796                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 797                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 798                         }
 799
 800                         status = task_threads (task_list[task], &thread_list,
 801                                         &thread_list_len);
 802                         if (status != KERN_SUCCESS)
 803                         {
 804                                 /* Apple's `top' treats this case a zombie. It
 805                                  * makes sense to some extend: A `zombie'
 806                                  * thread is nonsense, since the task/process
 807                                  * is dead. */
 808                                 zombies++;
 809                                 DEBUG ("task_threads failed: %s",
 810                                                 mach_error_string (status));
 811                                 if (task_list[task] != port_task_self)
 812                                         mach_port_deallocate (port_task_self,
 813                                                         task_list[task]);
 814                                 continue; /* with next task_list */
 815                         }
 816
 817                         for (thread = 0; thread < thread_list_len; thread++)
 818                         {
 819                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 820                                 status = thread_info (thread_list[thread],
 821                                                 THREAD_BASIC_INFO,
 822                                                 (thread_info_t) &thread_data,
 823                                                 &thread_data_len);
 824                                 if (status != KERN_SUCCESS)
 825                                 {
 826                                         ERROR ("thread_info failed: %s",
 827                                                         mach_error_string (status));
 828                                         if (task_list[task] != port_task_self)
 829                                                 mach_port_deallocate (port_task_self,
 830                                                                 thread_list[thread]);
 831                                         continue; /* with next thread_list */
 832                                 }
 833
 834                                 if (ps != NULL)
 835                                         pse.num_lwp++;
 836
 837                                 switch (thread_data.run_state)
 838                                 {
 839                                         case TH_STATE_RUNNING:
 840                                                 running++;
 841                                                 break;
 842                                         case TH_STATE_STOPPED:
 843                                         /* What exactly is `halted'? */
 844                                         case TH_STATE_HALTED:
 845                                                 stopped++;
 846                                                 break;
 847                                         case TH_STATE_WAITING:
 848                                                 sleeping++;
 849                                                 break;
 850                                         case TH_STATE_UNINTERRUPTIBLE:
 851                                                 blocked++;
 852                                                 break;
 853                                         /* There is no `zombie' case here,
 854                                          * since there are no zombie-threads.
 855                                          * There's only zombie tasks, which are
 856                                          * handled above. */
 857                                         default:
 858                                                 WARNING ("Unknown thread status: %s",
 859                                                                 thread_data.run_state);
 860                                                 break;
 861                                 } /* switch (thread_data.run_state) */
 862
 863                                 if (task_list[task] != port_task_self)
 864                                 {
 865                                         status = mach_port_deallocate (port_task_self,
 866                                                         thread_list[thread]);
 867                                         if (status != KERN_SUCCESS)
 868                                                 ERROR ("mach_port_deallocate failed: %s",
 869                                                                 mach_error_string (status));
 870                                 }
 871                         } /* for (thread_list) */
 872
 873                         if ((status = vm_deallocate (port_task_self,
 874                                                         (vm_address_t) thread_list,
 875                                                         thread_list_len * sizeof (thread_act_t)))
 876                                         != KERN_SUCCESS)
 877                         {
 878                                 ERROR ("vm_deallocate failed: %s",
 879                                                 mach_error_string (status));
 880                         }
 881                         thread_list = NULL;
 882                         thread_list_len = 0;
 883
 884                         /* Only deallocate the task port, if it isn't our own.
 885                          * Don't know what would happen in that case, but this
 886                          * is what Apple's top does.. ;) */
 887                         if (task_list[task] != port_task_self)
 888                         {
 889                                 status = mach_port_deallocate (port_task_self,
 890                                                 task_list[task]);
 891                                 if (status != KERN_SUCCESS)
 892                                         ERROR ("mach_port_deallocate failed: %s",
 893                                                         mach_error_string (status));
 894                         }
 895
 896                         if (ps != NULL)
 897                                 ps_list_add (task_name, &pse);
 898                 } /* for (task_list) */
 899
 900                 if ((status = vm_deallocate (port_task_self,
 901                                 (vm_address_t) task_list,
 902                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 903                 {
 904                         ERROR ("vm_deallocate failed: %s",
 905                                         mach_error_string (status));
 906                 }
 907                 task_list = NULL;
 908                 task_list_len = 0;
 909
 910                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 911                                 != KERN_SUCCESS)
 912                 {
 913                         ERROR ("mach_port_deallocate failed: %s",
 914                                         mach_error_string (status));
 915                 }
 916         } /* for (pset_list) */
 917
 918         ps_submit_state ("running", running);
 919         ps_submit_state ("sleeping", sleeping);
 920         ps_submit_state ("zombies", zombies);
 921         ps_submit_state ("stopped", stopped);
 922         ps_submit_state ("blocked", blocked);
 923
 924         for (ps = list_head_g; ps != NULL; ps = ps->next)
 925                 ps_submit_proc_list (ps);
 926 /* #endif HAVE_THREAD_INFO */
 927
 928 #elif KERNEL_LINUX
 929         int running  = 0;
 930         int sleeping = 0;
 931         int zombies  = 0;
 932         int stopped  = 0;
 933         int paging   = 0;
 934         int blocked  = 0;
 935
 936         struct dirent *ent;
 937         DIR           *proc;
 938         int            pid;
 939
 940         int        status;
 941         procstat_t ps;
 942         procstat_entry_t pse;
 943         char       state;
 944
 945         procstat_t *ps_ptr;
 946
 947         running = sleeping = zombies = stopped = paging = blocked = 0;
 948         ps_list_reset ();
 949
 950         if ((proc = opendir ("/proc")) == NULL)
 951         {
 952                 char errbuf[1024];
 953                 ERROR ("Cannot open `/proc': %s",
 954                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 955                 return (-1);
 956         }
 957
 958         while ((ent = readdir (proc)) != NULL)
 959         {
 960                 if (!isdigit (ent->d_name[0]))
 961                         continue;
 962
 963                 if ((pid = atoi (ent->d_name)) < 1)
 964                         continue;
 965
 966                 status = ps_read_process (pid, &ps, &state);
 967                 if (status != 0)
 968                 {
 969                         DEBUG ("ps_read_process failed: %i", status);
 970                         continue;
 971                 }
 972
 973                 pse.id       = pid;
 974                 pse.age      = 0;
 975
 976                 pse.num_proc = ps.num_proc;
 977                 pse.num_lwp  = ps.num_lwp;
 978                 pse.vmem_rss = ps.vmem_rss;
 979
 980                 pse.vmem_minflt = 0;
 981                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
 982                 pse.vmem_majflt = 0;
 983                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
 984
 985                 pse.cpu_user = 0;
 986                 pse.cpu_user_counter = ps.cpu_user_counter;
 987                 pse.cpu_system = 0;
 988                 pse.cpu_system_counter = ps.cpu_system_counter;
 989
 990                 switch (state)
 991                 {
 992                         case 'R': running++;  break;
 993                         case 'S': sleeping++; break;
 994                         case 'D': blocked++;  break;
 995                         case 'Z': zombies++;  break;
 996                         case 'T': stopped++;  break;
 997                         case 'W': paging++;   break;
 998                 }
 999
1000                 ps_list_add (ps.name, &pse);
1001         }
1002
1003         closedir (proc);
1004
1005         ps_submit_state ("running",  running);
1006         ps_submit_state ("sleeping", sleeping);
1007         ps_submit_state ("zombies",  zombies);
1008         ps_submit_state ("stopped",  stopped);
1009         ps_submit_state ("paging",   paging);
1010         ps_submit_state ("blocked",  blocked);
1011
1012         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1013                 ps_submit_proc_list (ps_ptr);
1014 #endif /* KERNEL_LINUX */
1015
1016         return (0);
1017 } /* int ps_read */
1018
1019 void module_register (void)
1020 {
1021         plugin_register_config ("processes", ps_config,
1022                         config_keys, config_keys_num);
1023         plugin_register_init ("processes", ps_init);
1024         plugin_register_read ("processes", ps_read);
1025 } /* void module_register */