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 "utils_debug.h"
  29 #include "configfile.h"
  30
  31 /* Include header files for the mach system, if they exist.. */
  32 #if HAVE_THREAD_INFO
  33 #  if HAVE_MACH_MACH_INIT_H
  34 #    include <mach/mach_init.h>
  35 #  endif
  36 #  if HAVE_MACH_HOST_PRIV_H
  37 #    include <mach/host_priv.h>
  38 #  endif
  39 #  if HAVE_MACH_MACH_ERROR_H
  40 #    include <mach/mach_error.h>
  41 #  endif
  42 #  if HAVE_MACH_MACH_HOST_H
  43 #    include <mach/mach_host.h>
  44 #  endif
  45 #  if HAVE_MACH_MACH_PORT_H
  46 #    include <mach/mach_port.h>
  47 #  endif
  48 #  if HAVE_MACH_MACH_TYPES_H
  49 #    include <mach/mach_types.h>
  50 #  endif
  51 #  if HAVE_MACH_MESSAGE_H
  52 #    include <mach/message.h>
  53 #  endif
  54 #  if HAVE_MACH_PROCESSOR_SET_H
  55 #    include <mach/processor_set.h>
  56 #  endif
  57 #  if HAVE_MACH_TASK_H
  58 #    include <mach/task.h>
  59 #  endif
  60 #  if HAVE_MACH_THREAD_ACT_H
  61 #    include <mach/thread_act.h>
  62 #  endif
  63 #  if HAVE_MACH_VM_REGION_H
  64 #    include <mach/vm_region.h>
  65 #  endif
  66 #  if HAVE_MACH_VM_MAP_H
  67 #    include <mach/vm_map.h>
  68 #  endif
  69 #  if HAVE_MACH_VM_PROT_H
  70 #    include <mach/vm_prot.h>
  71 #  endif
  72 #  if HAVE_SYS_SYSCTL_H
  73 #    include <sys/sysctl.h>
  74 #  endif
  75 /* #endif HAVE_THREAD_INFO */
  76
  77 #elif KERNEL_LINUX
  78 #  if HAVE_LINUX_CONFIG_H
  79 #    include <linux/config.h>
  80 #  endif
  81 #  ifndef CONFIG_HZ
  82 #    define CONFIG_HZ 100
  83 #  endif
  84 #endif /* KERNEL_LINUX */
  85
  86 #define MODULE_NAME "processes"
  87
  88 #if HAVE_THREAD_INFO || KERNEL_LINUX
  89 # define PROCESSES_HAVE_READ 1
  90 #else
  91 # define PROCESSES_HAVE_READ 0
  92 #endif
  93
  94 #define BUFSIZE 256
  95
  96 static data_source_t state_dsrc[1] =
  97 {
  98         {"value", DS_TYPE_GAUGE, 0.0, 65535.0}
  99 };
 100
 101 static data_set_t state_ds =
 102 {
 103         "ps_state", 1, state_dsrc
 104 };
 105
 106 static data_source_t rss_dsrc[1] =
 107 {
 108         /* max = 2^63 - 1 */
 109         {"value", DS_TYPE_GAUGE, 0.0, 9223372036854775807.0}
 110 };
 111
 112 static data_set_t rss_ds =
 113 {
 114         "ps_rss", 1, rss_dsrc
 115 };
 116
 117 static data_source_t time_dsrc[2] =
 118 {
 119         /* 1 second in user-mode per second ought to be enough.. */
 120         {"user", DS_TYPE_COUNTER, 0.0, 1000000.0},
 121         {"syst", DS_TYPE_COUNTER, 0.0, 1000000.0}
 122 };
 123
 124 static data_set_t time_ds =
 125 {
 126         "ps_cputime", 2, time_dsrc
 127 };
 128
 129 static data_source_t count_dsrc[2] =
 130 {
 131         /* 1 second in user-mode per second ought to be enough.. */
 132         {"processes", DS_TYPE_GAUGE, 0.0, 1000000.0},
 133         {"threads",   DS_TYPE_GAUGE, 0.0, 1000000.0}
 134 };
 135
 136 static data_set_t count_ds =
 137 {
 138         "ps_count", 2, count_dsrc
 139 };
 140
 141 static data_source_t pagefaults_dsrc[2] =
 142 {
 143         /* max = 2^63 - 1 */
 144         {"minflt", DS_TYPE_COUNTER, 0.0, 9223372036854775807.0},
 145         {"majflt", DS_TYPE_COUNTER, 0.0, 9223372036854775807.0}
 146 };
 147
 148 static data_set_t pagefaults_ds =
 149 {
 150         "ps_pagefaults", 2, pagefaults_dsrc
 151 };
 152
 153 #if PROCESSES_HAVE_READ
 154 static const char *config_keys[] =
 155 {
 156         "Process",
 157         NULL
 158 };
 159 static int config_keys_num = 1;
 160
 161 typedef struct procstat_entry_s
 162 {
 163         unsigned long id;
 164         unsigned long age;
 165
 166         unsigned long num_proc;
 167         unsigned long num_lwp;
 168         unsigned long vmem_rss;
 169
 170         unsigned long vmem_minflt;
 171         unsigned long vmem_majflt;
 172         unsigned long vmem_minflt_counter;
 173         unsigned long vmem_majflt_counter;
 174
 175         unsigned long cpu_user;
 176         unsigned long cpu_system;
 177         unsigned long cpu_user_counter;
 178         unsigned long cpu_system_counter;
 179
 180         struct procstat_entry_s *next;
 181 } procstat_entry_t;
 182
 183 #define PROCSTAT_NAME_LEN 256
 184 typedef struct procstat
 185 {
 186         char          name[PROCSTAT_NAME_LEN];
 187
 188         unsigned long num_proc;
 189         unsigned long num_lwp;
 190         unsigned long vmem_rss;
 191
 192         unsigned long vmem_minflt_counter;
 193         unsigned long vmem_majflt_counter;
 194
 195         unsigned long cpu_user_counter;
 196         unsigned long cpu_system_counter;
 197
 198         struct procstat   *next;
 199         struct procstat_entry_s *instances;
 200 } procstat_t;
 201
 202 static procstat_t *list_head_g = NULL;
 203
 204 #if HAVE_THREAD_INFO
 205 static mach_port_t port_host_self;
 206 static mach_port_t port_task_self;
 207
 208 static processor_set_name_array_t pset_list;
 209 static mach_msg_type_number_t     pset_list_len;
 210 /* #endif HAVE_THREAD_INFO */
 211
 212 #elif KERNEL_LINUX
 213 static long pagesize_g;
 214 #endif /* KERNEL_LINUX */
 215
 216 #if HAVE_THREAD_INFO | KERNEL_LINUX
 217 static void ps_list_register (const char *name)
 218 {
 219         procstat_t *new;
 220         procstat_t *ptr;
 221
 222         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 223                 return;
 224         memset (new, 0, sizeof (procstat_t));
 225         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 226
 227         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 228         {
 229                 if (strcmp (ptr->name, name) == 0)
 230                         return;
 231                 if (ptr->next == NULL)
 232                         break;
 233         }
 234
 235         if (ptr == NULL)
 236                 list_head_g = new;
 237         else
 238                 ptr->next = new;
 239 }
 240
 241 static procstat_t *ps_list_search (const char *name)
 242 {
 243         procstat_t *ptr;
 244
 245         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 246                 if (strcmp (ptr->name, name) == 0)
 247                         break;
 248
 249         return (ptr);
 250 }
 251
 252 static void ps_list_add (const char *name, procstat_entry_t *entry)
 253 {
 254         procstat_t *ps;
 255         procstat_entry_t *pse;
 256
 257         if (entry->id == 0)
 258                 return;
 259
 260         if ((ps = ps_list_search (name)) == NULL)
 261                 return;
 262
 263         for (pse = ps->instances; pse != NULL; pse = pse->next)
 264                 if ((pse->id == entry->id) || (pse->next == NULL))
 265                         break;
 266
 267         if ((pse == NULL) || (pse->id != entry->id))
 268         {
 269                 procstat_entry_t *new;
 270
 271                 new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 272                 if (new == NULL)
 273                         return;
 274                 memset (new, 0, sizeof (procstat_entry_t));
 275                 new->id = entry->id;
 276
 277                 if (pse == NULL)
 278                         ps->instances = new;
 279                 else
 280                         pse->next = new;
 281
 282                 pse = new;
 283         }
 284
 285         pse->age = 0;
 286         pse->num_proc = entry->num_proc;
 287         pse->num_lwp  = entry->num_lwp;
 288         pse->vmem_rss = entry->vmem_rss;
 289
 290         ps->num_proc += pse->num_proc;
 291         ps->num_lwp  += pse->num_lwp;
 292         ps->vmem_rss += pse->vmem_rss;
 293
 294         if ((entry->vmem_minflt_counter == 0)
 295                         && (entry->vmem_majflt_counter == 0))
 296         {
 297                 pse->vmem_minflt_counter += entry->vmem_minflt;
 298                 pse->vmem_minflt = entry->vmem_minflt;
 299
 300                 pse->vmem_majflt_counter += entry->vmem_majflt;
 301                 pse->vmem_majflt = entry->vmem_majflt;
 302         }
 303         else
 304         {
 305                 if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 306                 {
 307                         pse->vmem_minflt = entry->vmem_minflt_counter
 308                                 + (ULONG_MAX - pse->vmem_minflt_counter);
 309                 }
 310                 else
 311                 {
 312                         pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 313                 }
 314                 pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 315
 316                 if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 317                 {
 318                         pse->vmem_majflt = entry->vmem_majflt_counter
 319                                 + (ULONG_MAX - pse->vmem_majflt_counter);
 320                 }
 321                 else
 322                 {
 323                         pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 324                 }
 325                 pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 326         }
 327
 328         ps->vmem_minflt_counter += pse->vmem_minflt;
 329         ps->vmem_majflt_counter += pse->vmem_majflt;
 330
 331         if ((entry->cpu_user_counter == 0)
 332                         && (entry->cpu_system_counter == 0))
 333         {
 334                 pse->cpu_user_counter += entry->cpu_user;
 335                 pse->cpu_user = entry->cpu_user;
 336
 337                 pse->cpu_system_counter += entry->cpu_system;
 338                 pse->cpu_system = entry->cpu_system;
 339         }
 340         else
 341         {
 342                 if (entry->cpu_user_counter < pse->cpu_user_counter)
 343                 {
 344                         pse->cpu_user = entry->cpu_user_counter
 345                                 + (ULONG_MAX - pse->cpu_user_counter);
 346                 }
 347                 else
 348                 {
 349                         pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 350                 }
 351                 pse->cpu_user_counter = entry->cpu_user_counter;
 352
 353                 if (entry->cpu_system_counter < pse->cpu_system_counter)
 354                 {
 355                         pse->cpu_system = entry->cpu_system_counter
 356                                 + (ULONG_MAX - pse->cpu_system_counter);
 357                 }
 358                 else
 359                 {
 360                         pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 361                 }
 362                 pse->cpu_system_counter = entry->cpu_system_counter;
 363         }
 364
 365         ps->cpu_user_counter   += pse->cpu_user;
 366         ps->cpu_system_counter += pse->cpu_system;
 367 }
 368
 369 static void ps_list_reset (void)
 370 {
 371         procstat_t *ps;
 372         procstat_entry_t *pse;
 373         procstat_entry_t *pse_prev;
 374
 375         for (ps = list_head_g; ps != NULL; ps = ps->next)
 376         {
 377                 ps->num_proc    = 0;
 378                 ps->num_lwp     = 0;
 379                 ps->vmem_rss    = 0;
 380
 381                 pse_prev = NULL;
 382                 pse = ps->instances;
 383                 while (pse != NULL)
 384                 {
 385                         if (pse->age > 10)
 386                         {
 387                                 DBG ("Removing this procstat entry cause it's too old: "
 388                                                 "id = %lu; name = %s;",
 389                                                 pse->id, ps->name);
 390
 391                                 if (pse_prev == NULL)
 392                                 {
 393                                         ps->instances = pse->next;
 394                                         free (pse);
 395                                         pse = ps->instances;
 396                                 }
 397                                 else
 398                                 {
 399                                         pse_prev->next = pse->next;
 400                                         free (pse);
 401                                         pse = pse_prev->next;
 402                                 }
 403                         }
 404                         else
 405                         {
 406                                 pse->age++;
 407                                 pse_prev = pse;
 408                                 pse = pse->next;
 409                         }
 410                 } /* while (pse != NULL) */
 411         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 412 }
 413 #endif /* HAVE_THREAD_INFO | KERNEL_LINUX */
 414
 415 static int ps_config (const char *key, const char *value)
 416 {
 417         if (strcasecmp (key, "Process") == 0)
 418         {
 419                 ps_list_register (value);
 420         }
 421         else
 422         {
 423                 return (-1);
 424         }
 425
 426         return (0);
 427 }
 428
 429 static int ps_init (void)
 430 {
 431 #if HAVE_THREAD_INFO
 432         kern_return_t status;
 433
 434         port_host_self = mach_host_self ();
 435         port_task_self = mach_task_self ();
 436
 437         if (pset_list != NULL)
 438         {
 439                 vm_deallocate (port_task_self,
 440                                 (vm_address_t) pset_list,
 441                                 pset_list_len * sizeof (processor_set_t));
 442                 pset_list = NULL;
 443                 pset_list_len = 0;
 444         }
 445
 446         if ((status = host_processor_sets (port_host_self,
 447                                         &pset_list,
 448                                         &pset_list_len)) != KERN_SUCCESS)
 449         {
 450                 syslog (LOG_ERR, "host_processor_sets failed: %s\n",
 451                                 mach_error_string (status));
 452                 pset_list = NULL;
 453                 pset_list_len = 0;
 454                 return (-1);
 455         }
 456 /* #endif HAVE_THREAD_INFO */
 457
 458 #elif KERNEL_LINUX
 459         pagesize_g = sysconf(_SC_PAGESIZE);
 460         DBG ("pagesize_g = %li; CONFIG_HZ = %i;",
 461                         pagesize_g, CONFIG_HZ);
 462 #endif /* KERNEL_LINUX */
 463
 464         return (0);
 465 } /* int ps_init */
 466
 467 static void ps_submit_state (const char *state, double value)
 468 {
 469         value_t values[1];
 470         value_list_t vl = VALUE_LIST_INIT;
 471
 472         values[0].gauge = value;
 473
 474         vl.values = values;
 475         vl.values_len = 1;
 476         vl.time = time (NULL);
 477         strcpy (vl.host, hostname);
 478         strcpy (vl.plugin, "processes");
 479         strcpy (vl.plugin_instance, "");
 480         strncpy (vl.type_instance, state, sizeof (vl.type_instance));
 481
 482         plugin_dispatch_values ("ps_state", &vl);
 483 }
 484
 485 static void ps_submit_proc_list (procstat_t *ps)
 486 {
 487         value_t values[2];
 488         value_list_t vl = VALUE_LIST_INIT;
 489
 490         vl.values = values;
 491         vl.values_len = 2;
 492         vl.time = time (NULL);
 493         strcpy (vl.host, hostname);
 494         strcpy (vl.plugin, "processes");
 495         strncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 496
 497         vl.values[0].gauge = ps->vmem_rss;
 498         vl.values_len = 1;
 499         plugin_dispatch_values ("ps_rss", &vl);
 500
 501         vl.values[0].counter = ps->cpu_user_counter;
 502         vl.values[1].counter = ps->cpu_system_counter;
 503         vl.values_len = 2;
 504         plugin_dispatch_values ("ps_cputime", &vl);
 505
 506         vl.values[0].gauge = ps->num_proc;
 507         vl.values[1].gauge = ps->num_lwp;
 508         vl.values_len = 2;
 509         plugin_dispatch_values ("ps_count", &vl);
 510
 511         vl.values[0].counter = ps->vmem_minflt_counter;
 512         vl.values[1].counter = ps->vmem_majflt_counter;
 513         vl.values_len = 2;
 514         plugin_dispatch_values ("ps_pagefaults", &vl);
 515
 516         DBG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 517                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 518                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 519                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 520                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 521                         ps->cpu_user_counter, ps->cpu_system_counter);
 522 } /* void ps_submit_proc_list */
 523
 524 #if KERNEL_LINUX
 525 static int *ps_read_tasks (int pid)
 526 {
 527         int *list = NULL;
 528         int  list_size = 1; /* size of allocated space, in elements */
 529         int  list_len = 0;  /* number of currently used elements */
 530
 531         char           dirname[64];
 532         DIR           *dh;
 533         struct dirent *ent;
 534
 535         snprintf (dirname, 64, "/proc/%i/task", pid);
 536         dirname[63] = '\0';
 537
 538         if ((dh = opendir (dirname)) == NULL)
 539         {
 540                 DBG ("Failed to open directory `%s'", dirname);
 541                 return (NULL);
 542         }
 543
 544         while ((ent = readdir (dh)) != NULL)
 545         {
 546                 if (!isdigit (ent->d_name[0]))
 547                         continue;
 548
 549                 if ((list_len + 1) >= list_size)
 550                 {
 551                         int *new_ptr;
 552                         int  new_size = 2 * list_size;
 553                         /* Comes in sizes: 2, 4, 8, 16, ... */
 554
 555                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 556                         if (new_ptr == NULL)
 557                         {
 558                                 if (list != NULL)
 559                                         free (list);
 560                                 syslog (LOG_ERR, "processes plugin: "
 561                                                 "Failed to allocate more memory.");
 562                                 return (NULL);
 563                         }
 564
 565                         list = new_ptr;
 566                         list_size = new_size;
 567
 568                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 569                 }
 570
 571                 list[list_len] = atoi (ent->d_name);
 572                 if (list[list_len] != 0)
 573                         list_len++;
 574         }
 575
 576         closedir (dh);
 577
 578         assert (list_len < list_size);
 579         assert (list[list_len] == 0);
 580
 581         return (list);
 582 }
 583
 584 int ps_read_process (int pid, procstat_t *ps, char *state)
 585 {
 586         char  filename[64];
 587         char  buffer[1024];
 588         FILE *fh;
 589
 590         char *fields[64];
 591         char  fields_len;
 592
 593         int  *tasks;
 594         int   i;
 595
 596         int   ppid;
 597         int   name_len;
 598
 599         long long unsigned cpu_user_counter;
 600         long long unsigned cpu_system_counter;
 601         long long unsigned vmem_rss;
 602
 603         memset (ps, 0, sizeof (procstat_t));
 604
 605         snprintf (filename, 64, "/proc/%i/stat", pid);
 606         filename[63] = '\0';
 607
 608         if ((fh = fopen (filename, "r")) == NULL)
 609                 return (-1);
 610
 611         if (fgets (buffer, 1024, fh) == NULL)
 612         {
 613                 fclose (fh);
 614                 return (-1);
 615         }
 616
 617         fclose (fh);
 618
 619         fields_len = strsplit (buffer, fields, 64);
 620         if (fields_len < 24)
 621         {
 622                 DBG ("`%s' has only %i fields..",
 623                                 filename, fields_len);
 624                 return (-1);
 625         }
 626         else if (fields_len != 41)
 627         {
 628                 DBG ("WARNING: (fields_len = %i) != 41", fields_len);
 629         }
 630
 631         /* copy the name, strip brackets in the process */
 632         name_len = strlen (fields[1]) - 2;
 633         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 634         {
 635                 DBG ("No brackets found in process name: `%s'", fields[1]);
 636                 return (-1);
 637         }
 638         fields[1] = fields[1] + 1;
 639         fields[1][name_len] = '\0';
 640         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 641
 642         ppid = atoi (fields[3]);
 643
 644         if ((tasks = ps_read_tasks (pid)) == NULL)
 645         {
 646                 /* This happends for zombied, e.g. */
 647                 DBG ("ps_read_tasks (%i) failed.", pid);
 648                 *state = 'Z';
 649                 ps->num_lwp  = 0;
 650                 ps->num_proc = 0;
 651         }
 652         else
 653         {
 654                 *state = '\0';
 655                 ps->num_lwp  = 0;
 656                 ps->num_proc = 1;
 657                 for (i = 0; tasks[i] != 0; i++)
 658                         ps->num_lwp++;
 659
 660                 free (tasks);
 661                 tasks = NULL;
 662         }
 663
 664         /* Leave the rest at zero if this is only an LWP */
 665         if (ps->num_proc == 0)
 666         {
 667                 DBG ("This is only an LWP: pid = %i; name = %s;",
 668                                 pid, ps->name);
 669                 return (0);
 670         }
 671
 672         cpu_user_counter   = atoll (fields[13]);
 673         cpu_system_counter = atoll (fields[14]);
 674         vmem_rss = atoll (fields[23]);
 675         ps->vmem_minflt_counter = atol (fields[9]);
 676         ps->vmem_majflt_counter = atol (fields[11]);
 677
 678         /* Convert jiffies to useconds */
 679         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 680         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 681         vmem_rss = vmem_rss * pagesize_g;
 682
 683         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 684         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 685         ps->vmem_rss = (unsigned long) vmem_rss;
 686
 687         *state = fields[2][0];
 688
 689         /* success */
 690         return (0);
 691 } /* int ps_read_process (...) */
 692 #endif /* KERNEL_LINUX */
 693
 694 #if HAVE_THREAD_INFO
 695 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 696 {
 697         int mib[4];
 698
 699         struct kinfo_proc kp;
 700         size_t            kp_size;
 701
 702         mib[0] = CTL_KERN;
 703         mib[1] = KERN_PROC;
 704         mib[2] = KERN_PROC_PID;
 705
 706         if (pid_for_task (t, pid) != KERN_SUCCESS)
 707                 return (-1);
 708         mib[3] = *pid;
 709
 710         kp_size = sizeof (kp);
 711         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 712                 return (-1);
 713
 714         if (name_max_len > (MAXCOMLEN + 1))
 715                 name_max_len = MAXCOMLEN + 1;
 716
 717         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 718         name[name_max_len - 1] = '\0';
 719
 720         DBG ("pid = %i; name = %s;", *pid, name);
 721
 722         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 723          * `top' does it, because it is a lot of work and only used when
 724          * debugging. -octo */
 725
 726         return (0);
 727 }
 728 #endif /* HAVE_THREAD_INFO */
 729
 730 static int ps_read (void)
 731 {
 732 #if HAVE_THREAD_INFO
 733         kern_return_t            status;
 734
 735         int                      pset;
 736         processor_set_t          port_pset_priv;
 737
 738         int                      task;
 739         task_array_t             task_list;
 740         mach_msg_type_number_t   task_list_len;
 741
 742         int                      task_pid;
 743         char                     task_name[MAXCOMLEN + 1];
 744
 745         int                      thread;
 746         thread_act_array_t       thread_list;
 747         mach_msg_type_number_t   thread_list_len;
 748         thread_basic_info_data_t thread_data;
 749         mach_msg_type_number_t   thread_data_len;
 750
 751         int running  = 0;
 752         int sleeping = 0;
 753         int zombies  = 0;
 754         int stopped  = 0;
 755         int blocked  = 0;
 756
 757         procstat_t *ps;
 758         procstat_entry_t pse;
 759
 760         ps_list_reset ();
 761
 762         /*
 763          * The Mach-concept is a little different from the traditional UNIX
 764          * concept: All the work is done in threads. Threads are contained in
 765          * `tasks'. Therefore, `task status' doesn't make much sense, since
 766          * it's actually a `thread status'.
 767          * Tasks are assigned to sets of processors, so that's where you go to
 768          * get a list.
 769          */
 770         for (pset = 0; pset < pset_list_len; pset++)
 771         {
 772                 if ((status = host_processor_set_priv (port_host_self,
 773                                                 pset_list[pset],
 774                                                 &port_pset_priv)) != KERN_SUCCESS)
 775                 {
 776                         syslog (LOG_ERR, "host_processor_set_priv failed: %s\n",
 777                                         mach_error_string (status));
 778                         continue;
 779                 }
 780
 781                 if ((status = processor_set_tasks (port_pset_priv,
 782                                                 &task_list,
 783                                                 &task_list_len)) != KERN_SUCCESS)
 784                 {
 785                         syslog (LOG_ERR, "processor_set_tasks failed: %s\n",
 786                                         mach_error_string (status));
 787                         mach_port_deallocate (port_task_self, port_pset_priv);
 788                         continue;
 789                 }
 790
 791                 for (task = 0; task < task_list_len; task++)
 792                 {
 793                         ps = NULL;
 794                         if (mach_get_task_name (task_list[task],
 795                                                 &task_pid,
 796                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 797                                 ps = ps_list_search (task_name);
 798
 799                         /* Collect more detailed statistics for this process */
 800                         if (ps != NULL)
 801                         {
 802                                 task_basic_info_data_t        task_basic_info;
 803                                 mach_msg_type_number_t        task_basic_info_len;
 804                                 task_events_info_data_t       task_events_info;
 805                                 mach_msg_type_number_t        task_events_info_len;
 806                                 task_absolutetime_info_data_t task_absolutetime_info;
 807                                 mach_msg_type_number_t        task_absolutetime_info_len;
 808
 809                                 memset (&pse, '\0', sizeof (pse));
 810                                 pse.id = task_pid;
 811
 812                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 813                                 status = task_info (task_list[task],
 814                                                 TASK_BASIC_INFO,
 815                                                 (task_info_t) &task_basic_info,
 816                                                 &task_basic_info_len);
 817                                 if (status != KERN_SUCCESS)
 818                                 {
 819                                         syslog (LOG_ERR, "task_info failed: %s",
 820                                                         mach_error_string (status));
 821                                         continue; /* with next thread_list */
 822                                 }
 823
 824                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 825                                 status = task_info (task_list[task],
 826                                                 TASK_EVENTS_INFO,
 827                                                 (task_info_t) &task_events_info,
 828                                                 &task_events_info_len);
 829                                 if (status != KERN_SUCCESS)
 830                                 {
 831                                         syslog (LOG_ERR, "task_info failed: %s",
 832                                                         mach_error_string (status));
 833                                         continue; /* with next thread_list */
 834                                 }
 835
 836                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 837                                 status = task_info (task_list[task],
 838                                                 TASK_ABSOLUTETIME_INFO,
 839                                                 (task_info_t) &task_absolutetime_info,
 840                                                 &task_absolutetime_info_len);
 841                                 if (status != KERN_SUCCESS)
 842                                 {
 843                                         syslog (LOG_ERR, "task_info failed: %s",
 844                                                         mach_error_string (status));
 845                                         continue; /* with next thread_list */
 846                                 }
 847
 848                                 pse.num_proc++;
 849                                 pse.vmem_rss = task_basic_info.resident_size;
 850
 851                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 852                                 pse.vmem_majflt_counter = task_events_info.faults;
 853
 854                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 855                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 856                         }
 857
 858                         status = task_threads (task_list[task], &thread_list,
 859                                         &thread_list_len);
 860                         if (status != KERN_SUCCESS)
 861                         {
 862                                 /* Apple's `top' treats this case a zombie. It
 863                                  * makes sense to some extend: A `zombie'
 864                                  * thread is nonsense, since the task/process
 865                                  * is dead. */
 866                                 zombies++;
 867                                 DBG ("task_threads failed: %s",
 868                                                 mach_error_string (status));
 869                                 if (task_list[task] != port_task_self)
 870                                         mach_port_deallocate (port_task_self,
 871                                                         task_list[task]);
 872                                 continue; /* with next task_list */
 873                         }
 874
 875                         for (thread = 0; thread < thread_list_len; thread++)
 876                         {
 877                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 878                                 status = thread_info (thread_list[thread],
 879                                                 THREAD_BASIC_INFO,
 880                                                 (thread_info_t) &thread_data,
 881                                                 &thread_data_len);
 882                                 if (status != KERN_SUCCESS)
 883                                 {
 884                                         syslog (LOG_ERR, "thread_info failed: %s",
 885                                                         mach_error_string (status));
 886                                         if (task_list[task] != port_task_self)
 887                                                 mach_port_deallocate (port_task_self,
 888                                                                 thread_list[thread]);
 889                                         continue; /* with next thread_list */
 890                                 }
 891
 892                                 if (ps != NULL)
 893                                         pse.num_lwp++;
 894
 895                                 switch (thread_data.run_state)
 896                                 {
 897                                         case TH_STATE_RUNNING:
 898                                                 running++;
 899                                                 break;
 900                                         case TH_STATE_STOPPED:
 901                                         /* What exactly is `halted'? */
 902                                         case TH_STATE_HALTED:
 903                                                 stopped++;
 904                                                 break;
 905                                         case TH_STATE_WAITING:
 906                                                 sleeping++;
 907                                                 break;
 908                                         case TH_STATE_UNINTERRUPTIBLE:
 909                                                 blocked++;
 910                                                 break;
 911                                         /* There is no `zombie' case here,
 912                                          * since there are no zombie-threads.
 913                                          * There's only zombie tasks, which are
 914                                          * handled above. */
 915                                         default:
 916                                                 syslog (LOG_WARNING,
 917                                                                 "Unknown thread status: %s",
 918                                                                 thread_data.run_state);
 919                                                 break;
 920                                 } /* switch (thread_data.run_state) */
 921
 922                                 if (task_list[task] != port_task_self)
 923                                 {
 924                                         status = mach_port_deallocate (port_task_self,
 925                                                         thread_list[thread]);
 926                                         if (status != KERN_SUCCESS)
 927                                                 syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 928                                                                 mach_error_string (status));
 929                                 }
 930                         } /* for (thread_list) */
 931
 932                         if ((status = vm_deallocate (port_task_self,
 933                                                         (vm_address_t) thread_list,
 934                                                         thread_list_len * sizeof (thread_act_t)))
 935                                         != KERN_SUCCESS)
 936                         {
 937                                 syslog (LOG_ERR, "vm_deallocate failed: %s",
 938                                                 mach_error_string (status));
 939                         }
 940                         thread_list = NULL;
 941                         thread_list_len = 0;
 942
 943                         /* Only deallocate the task port, if it isn't our own.
 944                          * Don't know what would happen in that case, but this
 945                          * is what Apple's top does.. ;) */
 946                         if (task_list[task] != port_task_self)
 947                         {
 948                                 status = mach_port_deallocate (port_task_self,
 949                                                 task_list[task]);
 950                                 if (status != KERN_SUCCESS)
 951                                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 952                                                         mach_error_string (status));
 953                         }
 954
 955                         if (ps != NULL)
 956                                 ps_list_add (task_name, &pse);
 957                 } /* for (task_list) */
 958
 959                 if ((status = vm_deallocate (port_task_self,
 960                                 (vm_address_t) task_list,
 961                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 962                 {
 963                         syslog (LOG_ERR, "vm_deallocate failed: %s",
 964                                         mach_error_string (status));
 965                 }
 966                 task_list = NULL;
 967                 task_list_len = 0;
 968
 969                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 970                                 != KERN_SUCCESS)
 971                 {
 972                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 973                                         mach_error_string (status));
 974                 }
 975         } /* for (pset_list) */
 976
 977         ps_submit_state ("running", running);
 978         ps_submit_state ("sleeping", sleeping);
 979         ps_submit_state ("zombies", zombies);
 980         ps_submit_state ("stopped", stopped);
 981         ps_submit_state ("blocked", blocked);
 982
 983         for (ps = list_head_g; ps != NULL; ps = ps->next)
 984                 ps_submit_proc_list (ps);
 985 /* #endif HAVE_THREAD_INFO */
 986
 987 #elif KERNEL_LINUX
 988         int running  = 0;
 989         int sleeping = 0;
 990         int zombies  = 0;
 991         int stopped  = 0;
 992         int paging   = 0;
 993         int blocked  = 0;
 994
 995         struct dirent *ent;
 996         DIR           *proc;
 997         int            pid;
 998
 999         int        status;
1000         procstat_t ps;
1001         procstat_entry_t pse;
1002         char       state;
1003
1004         procstat_t *ps_ptr;
1005
1006         running = sleeping = zombies = stopped = paging = blocked = 0;
1007         ps_list_reset ();
1008
1009         if ((proc = opendir ("/proc")) == NULL)
1010         {
1011                 syslog (LOG_ERR, "Cannot open `/proc': %s", strerror (errno));
1012                 return (-1);
1013         }
1014
1015         while ((ent = readdir (proc)) != NULL)
1016         {
1017                 if (!isdigit (ent->d_name[0]))
1018                         continue;
1019
1020                 if ((pid = atoi (ent->d_name)) < 1)
1021                         continue;
1022
1023                 status = ps_read_process (pid, &ps, &state);
1024                 if (status != 0)
1025                 {
1026                         DBG ("ps_read_process failed: %i", status);
1027                         continue;
1028                 }
1029
1030                 pse.id       = pid;
1031                 pse.age      = 0;
1032
1033                 pse.num_proc = ps.num_proc;
1034                 pse.num_lwp  = ps.num_lwp;
1035                 pse.vmem_rss = ps.vmem_rss;
1036
1037                 pse.vmem_minflt = 0;
1038                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1039                 pse.vmem_majflt = 0;
1040                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1041
1042                 pse.cpu_user = 0;
1043                 pse.cpu_user_counter = ps.cpu_user_counter;
1044                 pse.cpu_system = 0;
1045                 pse.cpu_system_counter = ps.cpu_system_counter;
1046
1047                 switch (state)
1048                 {
1049                         case 'R': running++;  break;
1050                         case 'S': sleeping++; break;
1051                         case 'D': blocked++;  break;
1052                         case 'Z': zombies++;  break;
1053                         case 'T': stopped++;  break;
1054                         case 'W': paging++;   break;
1055                 }
1056
1057                 ps_list_add (ps.name, &pse);
1058         }
1059
1060         closedir (proc);
1061
1062         ps_submit_state ("running",  running);
1063         ps_submit_state ("sleeping", sleeping);
1064         ps_submit_state ("zombies",  zombies);
1065         ps_submit_state ("stopped",  stopped);
1066         ps_submit_state ("paging",   paging);
1067         ps_submit_state ("blocked",  blocked);
1068
1069         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1070                 ps_submit_proc_list (ps_ptr);
1071 #endif /* KERNEL_LINUX */
1072
1073         return (0);
1074 } /* int ps_read */
1075 #endif /* PROCESSES_HAVE_READ */
1076
1077 void module_register (void)
1078 {
1079         plugin_register_data_set (&state_ds);
1080         plugin_register_data_set (&rss_ds);
1081         plugin_register_data_set (&time_ds);
1082         plugin_register_data_set (&count_ds );
1083         plugin_register_data_set (&pagefaults_ds );
1084
1085 #if PROCESSES_HAVE_READ
1086         plugin_register_config ("processes", ps_config,
1087                         config_keys, config_keys_num);
1088         plugin_register_init ("processes", ps_init);
1089         plugin_register_read ("processes", ps_read);
1090 #endif /* PROCESSES_HAVE_READ */
1091 }
1092