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 #define MODULE_NAME "processes"
  86
  87 #if HAVE_THREAD_INFO || KERNEL_LINUX
  88 # define PROCESSES_HAVE_READ 1
  89 #else
  90 # define PROCESSES_HAVE_READ 0
  91 #endif
  92
  93 #define BUFSIZE 256
  94
  95 #if PROCESSES_HAVE_READ
  96 #if HAVE_THREAD_INFO | KERNEL_LINUX
  97 static const char *config_keys[] =
  98 {
  99         "Process",
 100         NULL
 101 };
 102 static int config_keys_num = 1;
 103 #endif
 104
 105 typedef struct procstat_entry_s
 106 {
 107         unsigned long id;
 108         unsigned long age;
 109
 110         unsigned long num_proc;
 111         unsigned long num_lwp;
 112         unsigned long vmem_rss;
 113
 114         unsigned long vmem_minflt;
 115         unsigned long vmem_majflt;
 116         unsigned long vmem_minflt_counter;
 117         unsigned long vmem_majflt_counter;
 118
 119         unsigned long cpu_user;
 120         unsigned long cpu_system;
 121         unsigned long cpu_user_counter;
 122         unsigned long cpu_system_counter;
 123
 124         struct procstat_entry_s *next;
 125 } procstat_entry_t;
 126
 127 #define PROCSTAT_NAME_LEN 256
 128 typedef struct procstat
 129 {
 130         char          name[PROCSTAT_NAME_LEN];
 131
 132         unsigned long num_proc;
 133         unsigned long num_lwp;
 134         unsigned long vmem_rss;
 135
 136         unsigned long vmem_minflt_counter;
 137         unsigned long vmem_majflt_counter;
 138
 139         unsigned long cpu_user_counter;
 140         unsigned long cpu_system_counter;
 141
 142         struct procstat   *next;
 143         struct procstat_entry_s *instances;
 144 } procstat_t;
 145
 146 #if HAVE_THREAD_INFO | KERNEL_LINUX
 147 static procstat_t *list_head_g = NULL;
 148 #endif
 149
 150 #if HAVE_THREAD_INFO
 151 static mach_port_t port_host_self;
 152 static mach_port_t port_task_self;
 153
 154 static processor_set_name_array_t pset_list;
 155 static mach_msg_type_number_t     pset_list_len;
 156 /* #endif HAVE_THREAD_INFO */
 157
 158 #elif KERNEL_LINUX
 159 static long pagesize_g;
 160 #endif /* KERNEL_LINUX */
 161
 162 #if HAVE_THREAD_INFO | KERNEL_LINUX
 163 static void ps_list_register (const char *name)
 164 {
 165         procstat_t *new;
 166         procstat_t *ptr;
 167
 168         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 169                 return;
 170         memset (new, 0, sizeof (procstat_t));
 171         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 172
 173         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 174         {
 175                 if (strcmp (ptr->name, name) == 0)
 176                         return;
 177                 if (ptr->next == NULL)
 178                         break;
 179         }
 180
 181         if (ptr == NULL)
 182                 list_head_g = new;
 183         else
 184                 ptr->next = new;
 185 }
 186
 187 static procstat_t *ps_list_search (const char *name)
 188 {
 189         procstat_t *ptr;
 190
 191         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 192                 if (strcmp (ptr->name, name) == 0)
 193                         break;
 194
 195         return (ptr);
 196 }
 197
 198 static void ps_list_add (const char *name, procstat_entry_t *entry)
 199 {
 200         procstat_t *ps;
 201         procstat_entry_t *pse;
 202
 203         if (entry->id == 0)
 204                 return;
 205
 206         if ((ps = ps_list_search (name)) == NULL)
 207                 return;
 208
 209         for (pse = ps->instances; pse != NULL; pse = pse->next)
 210                 if ((pse->id == entry->id) || (pse->next == NULL))
 211                         break;
 212
 213         if ((pse == NULL) || (pse->id != entry->id))
 214         {
 215                 procstat_entry_t *new;
 216
 217                 new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 218                 if (new == NULL)
 219                         return;
 220                 memset (new, 0, sizeof (procstat_entry_t));
 221                 new->id = entry->id;
 222
 223                 if (pse == NULL)
 224                         ps->instances = new;
 225                 else
 226                         pse->next = new;
 227
 228                 pse = new;
 229         }
 230
 231         pse->age = 0;
 232         pse->num_proc = entry->num_proc;
 233         pse->num_lwp  = entry->num_lwp;
 234         pse->vmem_rss = entry->vmem_rss;
 235
 236         ps->num_proc += pse->num_proc;
 237         ps->num_lwp  += pse->num_lwp;
 238         ps->vmem_rss += pse->vmem_rss;
 239
 240         if ((entry->vmem_minflt_counter == 0)
 241                         && (entry->vmem_majflt_counter == 0))
 242         {
 243                 pse->vmem_minflt_counter += entry->vmem_minflt;
 244                 pse->vmem_minflt = entry->vmem_minflt;
 245
 246                 pse->vmem_majflt_counter += entry->vmem_majflt;
 247                 pse->vmem_majflt = entry->vmem_majflt;
 248         }
 249         else
 250         {
 251                 if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 252                 {
 253                         pse->vmem_minflt = entry->vmem_minflt_counter
 254                                 + (ULONG_MAX - pse->vmem_minflt_counter);
 255                 }
 256                 else
 257                 {
 258                         pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 259                 }
 260                 pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 261
 262                 if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 263                 {
 264                         pse->vmem_majflt = entry->vmem_majflt_counter
 265                                 + (ULONG_MAX - pse->vmem_majflt_counter);
 266                 }
 267                 else
 268                 {
 269                         pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 270                 }
 271                 pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 272         }
 273
 274         ps->vmem_minflt_counter += pse->vmem_minflt;
 275         ps->vmem_majflt_counter += pse->vmem_majflt;
 276
 277         if ((entry->cpu_user_counter == 0)
 278                         && (entry->cpu_system_counter == 0))
 279         {
 280                 pse->cpu_user_counter += entry->cpu_user;
 281                 pse->cpu_user = entry->cpu_user;
 282
 283                 pse->cpu_system_counter += entry->cpu_system;
 284                 pse->cpu_system = entry->cpu_system;
 285         }
 286         else
 287         {
 288                 if (entry->cpu_user_counter < pse->cpu_user_counter)
 289                 {
 290                         pse->cpu_user = entry->cpu_user_counter
 291                                 + (ULONG_MAX - pse->cpu_user_counter);
 292                 }
 293                 else
 294                 {
 295                         pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 296                 }
 297                 pse->cpu_user_counter = entry->cpu_user_counter;
 298
 299                 if (entry->cpu_system_counter < pse->cpu_system_counter)
 300                 {
 301                         pse->cpu_system = entry->cpu_system_counter
 302                                 + (ULONG_MAX - pse->cpu_system_counter);
 303                 }
 304                 else
 305                 {
 306                         pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 307                 }
 308                 pse->cpu_system_counter = entry->cpu_system_counter;
 309         }
 310
 311         ps->cpu_user_counter   += pse->cpu_user;
 312         ps->cpu_system_counter += pse->cpu_system;
 313 }
 314
 315 static void ps_list_reset (void)
 316 {
 317         procstat_t *ps;
 318         procstat_entry_t *pse;
 319         procstat_entry_t *pse_prev;
 320
 321         for (ps = list_head_g; ps != NULL; ps = ps->next)
 322         {
 323                 ps->num_proc    = 0;
 324                 ps->num_lwp     = 0;
 325                 ps->vmem_rss    = 0;
 326
 327                 pse_prev = NULL;
 328                 pse = ps->instances;
 329                 while (pse != NULL)
 330                 {
 331                         if (pse->age > 10)
 332                         {
 333                                 DEBUG ("Removing this procstat entry cause it's too old: "
 334                                                 "id = %lu; name = %s;",
 335                                                 pse->id, ps->name);
 336
 337                                 if (pse_prev == NULL)
 338                                 {
 339                                         ps->instances = pse->next;
 340                                         free (pse);
 341                                         pse = ps->instances;
 342                                 }
 343                                 else
 344                                 {
 345                                         pse_prev->next = pse->next;
 346                                         free (pse);
 347                                         pse = pse_prev->next;
 348                                 }
 349                         }
 350                         else
 351                         {
 352                                 pse->age++;
 353                                 pse_prev = pse;
 354                                 pse = pse->next;
 355                         }
 356                 } /* while (pse != NULL) */
 357         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 358 }
 359
 360 static int ps_config (const char *key, const char *value)
 361 {
 362         if (strcasecmp (key, "Process") == 0)
 363         {
 364                 ps_list_register (value);
 365         }
 366         else
 367         {
 368                 return (-1);
 369         }
 370
 371         return (0);
 372 }
 373 #endif /* HAVE_THREAD_INFO | KERNEL_LINUX */
 374
 375 static int ps_init (void)
 376 {
 377 #if HAVE_THREAD_INFO
 378         kern_return_t status;
 379
 380         port_host_self = mach_host_self ();
 381         port_task_self = mach_task_self ();
 382
 383         if (pset_list != NULL)
 384         {
 385                 vm_deallocate (port_task_self,
 386                                 (vm_address_t) pset_list,
 387                                 pset_list_len * sizeof (processor_set_t));
 388                 pset_list = NULL;
 389                 pset_list_len = 0;
 390         }
 391
 392         if ((status = host_processor_sets (port_host_self,
 393                                         &pset_list,
 394                                         &pset_list_len)) != KERN_SUCCESS)
 395         {
 396                 ERROR ("host_processor_sets failed: %s\n",
 397                                 mach_error_string (status));
 398                 pset_list = NULL;
 399                 pset_list_len = 0;
 400                 return (-1);
 401         }
 402 /* #endif HAVE_THREAD_INFO */
 403
 404 #elif KERNEL_LINUX
 405         pagesize_g = sysconf(_SC_PAGESIZE);
 406         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 407                         pagesize_g, CONFIG_HZ);
 408 #endif /* KERNEL_LINUX */
 409
 410         return (0);
 411 } /* int ps_init */
 412
 413 static void ps_submit_state (const char *state, double value)
 414 {
 415         value_t values[1];
 416         value_list_t vl = VALUE_LIST_INIT;
 417
 418         values[0].gauge = value;
 419
 420         vl.values = values;
 421         vl.values_len = 1;
 422         vl.time = time (NULL);
 423         strcpy (vl.host, hostname_g);
 424         strcpy (vl.plugin, "processes");
 425         strcpy (vl.plugin_instance, "");
 426         strncpy (vl.type_instance, state, sizeof (vl.type_instance));
 427
 428         plugin_dispatch_values ("ps_state", &vl);
 429 }
 430
 431 static void ps_submit_proc_list (procstat_t *ps)
 432 {
 433         value_t values[2];
 434         value_list_t vl = VALUE_LIST_INIT;
 435
 436         vl.values = values;
 437         vl.values_len = 2;
 438         vl.time = time (NULL);
 439         strcpy (vl.host, hostname_g);
 440         strcpy (vl.plugin, "processes");
 441         strncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 442
 443         vl.values[0].gauge = ps->vmem_rss;
 444         vl.values_len = 1;
 445         plugin_dispatch_values ("ps_rss", &vl);
 446
 447         vl.values[0].counter = ps->cpu_user_counter;
 448         vl.values[1].counter = ps->cpu_system_counter;
 449         vl.values_len = 2;
 450         plugin_dispatch_values ("ps_cputime", &vl);
 451
 452         vl.values[0].gauge = ps->num_proc;
 453         vl.values[1].gauge = ps->num_lwp;
 454         vl.values_len = 2;
 455         plugin_dispatch_values ("ps_count", &vl);
 456
 457         vl.values[0].counter = ps->vmem_minflt_counter;
 458         vl.values[1].counter = ps->vmem_majflt_counter;
 459         vl.values_len = 2;
 460         plugin_dispatch_values ("ps_pagefaults", &vl);
 461
 462         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 463                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 464                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 465                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 466                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 467                         ps->cpu_user_counter, ps->cpu_system_counter);
 468 } /* void ps_submit_proc_list */
 469
 470 #if KERNEL_LINUX
 471 static int *ps_read_tasks (int pid)
 472 {
 473         int *list = NULL;
 474         int  list_size = 1; /* size of allocated space, in elements */
 475         int  list_len = 0;  /* number of currently used elements */
 476
 477         char           dirname[64];
 478         DIR           *dh;
 479         struct dirent *ent;
 480
 481         snprintf (dirname, 64, "/proc/%i/task", pid);
 482         dirname[63] = '\0';
 483
 484         if ((dh = opendir (dirname)) == NULL)
 485         {
 486                 DEBUG ("Failed to open directory `%s'", dirname);
 487                 return (NULL);
 488         }
 489
 490         while ((ent = readdir (dh)) != NULL)
 491         {
 492                 if (!isdigit (ent->d_name[0]))
 493                         continue;
 494
 495                 if ((list_len + 1) >= list_size)
 496                 {
 497                         int *new_ptr;
 498                         int  new_size = 2 * list_size;
 499                         /* Comes in sizes: 2, 4, 8, 16, ... */
 500
 501                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 502                         if (new_ptr == NULL)
 503                         {
 504                                 if (list != NULL)
 505                                         free (list);
 506                                 ERROR ("processes plugin: "
 507                                                 "Failed to allocate more memory.");
 508                                 return (NULL);
 509                         }
 510
 511                         list = new_ptr;
 512                         list_size = new_size;
 513
 514                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 515                 }
 516
 517                 list[list_len] = atoi (ent->d_name);
 518                 if (list[list_len] != 0)
 519                         list_len++;
 520         }
 521
 522         closedir (dh);
 523
 524         assert (list_len < list_size);
 525         assert (list[list_len] == 0);
 526
 527         return (list);
 528 }
 529
 530 int ps_read_process (int pid, procstat_t *ps, char *state)
 531 {
 532         char  filename[64];
 533         char  buffer[1024];
 534         FILE *fh;
 535
 536         char *fields[64];
 537         char  fields_len;
 538
 539         int  *tasks;
 540         int   i;
 541
 542         int   ppid;
 543         int   name_len;
 544
 545         long long unsigned cpu_user_counter;
 546         long long unsigned cpu_system_counter;
 547         long long unsigned vmem_rss;
 548
 549         memset (ps, 0, sizeof (procstat_t));
 550
 551         snprintf (filename, 64, "/proc/%i/stat", pid);
 552         filename[63] = '\0';
 553
 554         if ((fh = fopen (filename, "r")) == NULL)
 555                 return (-1);
 556
 557         if (fgets (buffer, 1024, fh) == NULL)
 558         {
 559                 fclose (fh);
 560                 return (-1);
 561         }
 562
 563         fclose (fh);
 564
 565         fields_len = strsplit (buffer, fields, 64);
 566         if (fields_len < 24)
 567         {
 568                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 569                                 " `%s' has only %i fields..",
 570                                 (int) pid, filename, fields_len);
 571                 return (-1);
 572         }
 573
 574         /* copy the name, strip brackets in the process */
 575         name_len = strlen (fields[1]) - 2;
 576         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 577         {
 578                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 579                 return (-1);
 580         }
 581         fields[1] = fields[1] + 1;
 582         fields[1][name_len] = '\0';
 583         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 584
 585         ppid = atoi (fields[3]);
 586
 587         if ((tasks = ps_read_tasks (pid)) == NULL)
 588         {
 589                 /* This happends for zombied, e.g. */
 590                 DEBUG ("ps_read_tasks (%i) failed.", pid);
 591                 *state = 'Z';
 592                 ps->num_lwp  = 0;
 593                 ps->num_proc = 0;
 594         }
 595         else
 596         {
 597                 *state = '\0';
 598                 ps->num_lwp  = 0;
 599                 ps->num_proc = 1;
 600                 for (i = 0; tasks[i] != 0; i++)
 601                         ps->num_lwp++;
 602
 603                 free (tasks);
 604                 tasks = NULL;
 605         }
 606
 607         /* Leave the rest at zero if this is only an LWP */
 608         if (ps->num_proc == 0)
 609         {
 610                 DEBUG ("This is only an LWP: pid = %i; name = %s;",
 611                                 pid, ps->name);
 612                 return (0);
 613         }
 614
 615         cpu_user_counter   = atoll (fields[13]);
 616         cpu_system_counter = atoll (fields[14]);
 617         vmem_rss = atoll (fields[23]);
 618         ps->vmem_minflt_counter = atol (fields[9]);
 619         ps->vmem_majflt_counter = atol (fields[11]);
 620
 621         /* Convert jiffies to useconds */
 622         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 623         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 624         vmem_rss = vmem_rss * pagesize_g;
 625
 626         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 627         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 628         ps->vmem_rss = (unsigned long) vmem_rss;
 629
 630         *state = fields[2][0];
 631
 632         /* success */
 633         return (0);
 634 } /* int ps_read_process (...) */
 635 #endif /* KERNEL_LINUX */
 636
 637 #if HAVE_THREAD_INFO
 638 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 639 {
 640         int mib[4];
 641
 642         struct kinfo_proc kp;
 643         size_t            kp_size;
 644
 645         mib[0] = CTL_KERN;
 646         mib[1] = KERN_PROC;
 647         mib[2] = KERN_PROC_PID;
 648
 649         if (pid_for_task (t, pid) != KERN_SUCCESS)
 650                 return (-1);
 651         mib[3] = *pid;
 652
 653         kp_size = sizeof (kp);
 654         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 655                 return (-1);
 656
 657         if (name_max_len > (MAXCOMLEN + 1))
 658                 name_max_len = MAXCOMLEN + 1;
 659
 660         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 661         name[name_max_len - 1] = '\0';
 662
 663         DEBUG ("pid = %i; name = %s;", *pid, name);
 664
 665         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 666          * `top' does it, because it is a lot of work and only used when
 667          * debugging. -octo */
 668
 669         return (0);
 670 }
 671 #endif /* HAVE_THREAD_INFO */
 672
 673 static int ps_read (void)
 674 {
 675 #if HAVE_THREAD_INFO
 676         kern_return_t            status;
 677
 678         int                      pset;
 679         processor_set_t          port_pset_priv;
 680
 681         int                      task;
 682         task_array_t             task_list;
 683         mach_msg_type_number_t   task_list_len;
 684
 685         int                      task_pid;
 686         char                     task_name[MAXCOMLEN + 1];
 687
 688         int                      thread;
 689         thread_act_array_t       thread_list;
 690         mach_msg_type_number_t   thread_list_len;
 691         thread_basic_info_data_t thread_data;
 692         mach_msg_type_number_t   thread_data_len;
 693
 694         int running  = 0;
 695         int sleeping = 0;
 696         int zombies  = 0;
 697         int stopped  = 0;
 698         int blocked  = 0;
 699
 700         procstat_t *ps;
 701         procstat_entry_t pse;
 702
 703         ps_list_reset ();
 704
 705         /*
 706          * The Mach-concept is a little different from the traditional UNIX
 707          * concept: All the work is done in threads. Threads are contained in
 708          * `tasks'. Therefore, `task status' doesn't make much sense, since
 709          * it's actually a `thread status'.
 710          * Tasks are assigned to sets of processors, so that's where you go to
 711          * get a list.
 712          */
 713         for (pset = 0; pset < pset_list_len; pset++)
 714         {
 715                 if ((status = host_processor_set_priv (port_host_self,
 716                                                 pset_list[pset],
 717                                                 &port_pset_priv)) != KERN_SUCCESS)
 718                 {
 719                         ERROR ("host_processor_set_priv failed: %s\n",
 720                                         mach_error_string (status));
 721                         continue;
 722                 }
 723
 724                 if ((status = processor_set_tasks (port_pset_priv,
 725                                                 &task_list,
 726                                                 &task_list_len)) != KERN_SUCCESS)
 727                 {
 728                         ERROR ("processor_set_tasks failed: %s\n",
 729                                         mach_error_string (status));
 730                         mach_port_deallocate (port_task_self, port_pset_priv);
 731                         continue;
 732                 }
 733
 734                 for (task = 0; task < task_list_len; task++)
 735                 {
 736                         ps = NULL;
 737                         if (mach_get_task_name (task_list[task],
 738                                                 &task_pid,
 739                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 740                                 ps = ps_list_search (task_name);
 741
 742                         /* Collect more detailed statistics for this process */
 743                         if (ps != NULL)
 744                         {
 745                                 task_basic_info_data_t        task_basic_info;
 746                                 mach_msg_type_number_t        task_basic_info_len;
 747                                 task_events_info_data_t       task_events_info;
 748                                 mach_msg_type_number_t        task_events_info_len;
 749                                 task_absolutetime_info_data_t task_absolutetime_info;
 750                                 mach_msg_type_number_t        task_absolutetime_info_len;
 751
 752                                 memset (&pse, '\0', sizeof (pse));
 753                                 pse.id = task_pid;
 754
 755                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 756                                 status = task_info (task_list[task],
 757                                                 TASK_BASIC_INFO,
 758                                                 (task_info_t) &task_basic_info,
 759                                                 &task_basic_info_len);
 760                                 if (status != KERN_SUCCESS)
 761                                 {
 762                                         ERROR ("task_info failed: %s",
 763                                                         mach_error_string (status));
 764                                         continue; /* with next thread_list */
 765                                 }
 766
 767                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 768                                 status = task_info (task_list[task],
 769                                                 TASK_EVENTS_INFO,
 770                                                 (task_info_t) &task_events_info,
 771                                                 &task_events_info_len);
 772                                 if (status != KERN_SUCCESS)
 773                                 {
 774                                         ERROR ("task_info failed: %s",
 775                                                         mach_error_string (status));
 776                                         continue; /* with next thread_list */
 777                                 }
 778
 779                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 780                                 status = task_info (task_list[task],
 781                                                 TASK_ABSOLUTETIME_INFO,
 782                                                 (task_info_t) &task_absolutetime_info,
 783                                                 &task_absolutetime_info_len);
 784                                 if (status != KERN_SUCCESS)
 785                                 {
 786                                         ERROR ("task_info failed: %s",
 787                                                         mach_error_string (status));
 788                                         continue; /* with next thread_list */
 789                                 }
 790
 791                                 pse.num_proc++;
 792                                 pse.vmem_rss = task_basic_info.resident_size;
 793
 794                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 795                                 pse.vmem_majflt_counter = task_events_info.faults;
 796
 797                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 798                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 799                         }
 800
 801                         status = task_threads (task_list[task], &thread_list,
 802                                         &thread_list_len);
 803                         if (status != KERN_SUCCESS)
 804                         {
 805                                 /* Apple's `top' treats this case a zombie. It
 806                                  * makes sense to some extend: A `zombie'
 807                                  * thread is nonsense, since the task/process
 808                                  * is dead. */
 809                                 zombies++;
 810                                 DEBUG ("task_threads failed: %s",
 811                                                 mach_error_string (status));
 812                                 if (task_list[task] != port_task_self)
 813                                         mach_port_deallocate (port_task_self,
 814                                                         task_list[task]);
 815                                 continue; /* with next task_list */
 816                         }
 817
 818                         for (thread = 0; thread < thread_list_len; thread++)
 819                         {
 820                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 821                                 status = thread_info (thread_list[thread],
 822                                                 THREAD_BASIC_INFO,
 823                                                 (thread_info_t) &thread_data,
 824                                                 &thread_data_len);
 825                                 if (status != KERN_SUCCESS)
 826                                 {
 827                                         ERROR ("thread_info failed: %s",
 828                                                         mach_error_string (status));
 829                                         if (task_list[task] != port_task_self)
 830                                                 mach_port_deallocate (port_task_self,
 831                                                                 thread_list[thread]);
 832                                         continue; /* with next thread_list */
 833                                 }
 834
 835                                 if (ps != NULL)
 836                                         pse.num_lwp++;
 837
 838                                 switch (thread_data.run_state)
 839                                 {
 840                                         case TH_STATE_RUNNING:
 841                                                 running++;
 842                                                 break;
 843                                         case TH_STATE_STOPPED:
 844                                         /* What exactly is `halted'? */
 845                                         case TH_STATE_HALTED:
 846                                                 stopped++;
 847                                                 break;
 848                                         case TH_STATE_WAITING:
 849                                                 sleeping++;
 850                                                 break;
 851                                         case TH_STATE_UNINTERRUPTIBLE:
 852                                                 blocked++;
 853                                                 break;
 854                                         /* There is no `zombie' case here,
 855                                          * since there are no zombie-threads.
 856                                          * There's only zombie tasks, which are
 857                                          * handled above. */
 858                                         default:
 859                                                 WARNING ("Unknown thread status: %s",
 860                                                                 thread_data.run_state);
 861                                                 break;
 862                                 } /* switch (thread_data.run_state) */
 863
 864                                 if (task_list[task] != port_task_self)
 865                                 {
 866                                         status = mach_port_deallocate (port_task_self,
 867                                                         thread_list[thread]);
 868                                         if (status != KERN_SUCCESS)
 869                                                 ERROR ("mach_port_deallocate failed: %s",
 870                                                                 mach_error_string (status));
 871                                 }
 872                         } /* for (thread_list) */
 873
 874                         if ((status = vm_deallocate (port_task_self,
 875                                                         (vm_address_t) thread_list,
 876                                                         thread_list_len * sizeof (thread_act_t)))
 877                                         != KERN_SUCCESS)
 878                         {
 879                                 ERROR ("vm_deallocate failed: %s",
 880                                                 mach_error_string (status));
 881                         }
 882                         thread_list = NULL;
 883                         thread_list_len = 0;
 884
 885                         /* Only deallocate the task port, if it isn't our own.
 886                          * Don't know what would happen in that case, but this
 887                          * is what Apple's top does.. ;) */
 888                         if (task_list[task] != port_task_self)
 889                         {
 890                                 status = mach_port_deallocate (port_task_self,
 891                                                 task_list[task]);
 892                                 if (status != KERN_SUCCESS)
 893                                         ERROR ("mach_port_deallocate failed: %s",
 894                                                         mach_error_string (status));
 895                         }
 896
 897                         if (ps != NULL)
 898                                 ps_list_add (task_name, &pse);
 899                 } /* for (task_list) */
 900
 901                 if ((status = vm_deallocate (port_task_self,
 902                                 (vm_address_t) task_list,
 903                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 904                 {
 905                         ERROR ("vm_deallocate failed: %s",
 906                                         mach_error_string (status));
 907                 }
 908                 task_list = NULL;
 909                 task_list_len = 0;
 910
 911                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 912                                 != KERN_SUCCESS)
 913                 {
 914                         ERROR ("mach_port_deallocate failed: %s",
 915                                         mach_error_string (status));
 916                 }
 917         } /* for (pset_list) */
 918
 919         ps_submit_state ("running", running);
 920         ps_submit_state ("sleeping", sleeping);
 921         ps_submit_state ("zombies", zombies);
 922         ps_submit_state ("stopped", stopped);
 923         ps_submit_state ("blocked", blocked);
 924
 925         for (ps = list_head_g; ps != NULL; ps = ps->next)
 926                 ps_submit_proc_list (ps);
 927 /* #endif HAVE_THREAD_INFO */
 928
 929 #elif KERNEL_LINUX
 930         int running  = 0;
 931         int sleeping = 0;
 932         int zombies  = 0;
 933         int stopped  = 0;
 934         int paging   = 0;
 935         int blocked  = 0;
 936
 937         struct dirent *ent;
 938         DIR           *proc;
 939         int            pid;
 940
 941         int        status;
 942         procstat_t ps;
 943         procstat_entry_t pse;
 944         char       state;
 945
 946         procstat_t *ps_ptr;
 947
 948         running = sleeping = zombies = stopped = paging = blocked = 0;
 949         ps_list_reset ();
 950
 951         if ((proc = opendir ("/proc")) == NULL)
 952         {
 953                 char errbuf[1024];
 954                 ERROR ("Cannot open `/proc': %s",
 955                                 sstrerror (errno, errbuf, sizeof (errbuf)));
 956                 return (-1);
 957         }
 958
 959         while ((ent = readdir (proc)) != NULL)
 960         {
 961                 if (!isdigit (ent->d_name[0]))
 962                         continue;
 963
 964                 if ((pid = atoi (ent->d_name)) < 1)
 965                         continue;
 966
 967                 status = ps_read_process (pid, &ps, &state);
 968                 if (status != 0)
 969                 {
 970                         DEBUG ("ps_read_process failed: %i", status);
 971                         continue;
 972                 }
 973
 974                 pse.id       = pid;
 975                 pse.age      = 0;
 976
 977                 pse.num_proc = ps.num_proc;
 978                 pse.num_lwp  = ps.num_lwp;
 979                 pse.vmem_rss = ps.vmem_rss;
 980
 981                 pse.vmem_minflt = 0;
 982                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
 983                 pse.vmem_majflt = 0;
 984                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
 985
 986                 pse.cpu_user = 0;
 987                 pse.cpu_user_counter = ps.cpu_user_counter;
 988                 pse.cpu_system = 0;
 989                 pse.cpu_system_counter = ps.cpu_system_counter;
 990
 991                 switch (state)
 992                 {
 993                         case 'R': running++;  break;
 994                         case 'S': sleeping++; break;
 995                         case 'D': blocked++;  break;
 996                         case 'Z': zombies++;  break;
 997                         case 'T': stopped++;  break;
 998                         case 'W': paging++;   break;
 999                 }
1000
1001                 ps_list_add (ps.name, &pse);
1002         }
1003
1004         closedir (proc);
1005
1006         ps_submit_state ("running",  running);
1007         ps_submit_state ("sleeping", sleeping);
1008         ps_submit_state ("zombies",  zombies);
1009         ps_submit_state ("stopped",  stopped);
1010         ps_submit_state ("paging",   paging);
1011         ps_submit_state ("blocked",  blocked);
1012
1013         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1014                 ps_submit_proc_list (ps_ptr);
1015 #endif /* KERNEL_LINUX */
1016
1017         return (0);
1018 } /* int ps_read */
1019 #endif /* PROCESSES_HAVE_READ */
1020
1021 void module_register (void)
1022 {
1023 #if PROCESSES_HAVE_READ
1024 #if HAVE_THREAD_INFO | KERNEL_LINUX
1025         plugin_register_config ("processes", ps_config,
1026                         config_keys, config_keys_num);
1027 #endif
1028         plugin_register_init ("processes", ps_init);
1029         plugin_register_read ("processes", ps_read);
1030 #endif /* PROCESSES_HAVE_READ */
1031 } /* void module_register */