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 static data_source_t state_dsrc[1] =
  96 {
  97         {"value", DS_TYPE_GAUGE, 0.0, 65535.0}
  98 };
  99
 100 static data_set_t state_ds =
 101 {
 102         "ps_state", 1, state_dsrc
 103 };
 104
 105 static data_source_t rss_dsrc[1] =
 106 {
 107         /* max = 2^63 - 1 */
 108         {"value", DS_TYPE_GAUGE, 0.0, 9223372036854775807.0}
 109 };
 110
 111 static data_set_t rss_ds =
 112 {
 113         "ps_rss", 1, rss_dsrc
 114 };
 115
 116 static data_source_t time_dsrc[2] =
 117 {
 118         /* 1 second in user-mode per second ought to be enough.. */
 119         {"user", DS_TYPE_COUNTER, 0.0, 1000000.0},
 120         {"syst", DS_TYPE_COUNTER, 0.0, 1000000.0}
 121 };
 122
 123 static data_set_t time_ds =
 124 {
 125         "ps_cputime", 2, time_dsrc
 126 };
 127
 128 static data_source_t count_dsrc[2] =
 129 {
 130         /* 1 second in user-mode per second ought to be enough.. */
 131         {"processes", DS_TYPE_GAUGE, 0.0, 1000000.0},
 132         {"threads",   DS_TYPE_GAUGE, 0.0, 1000000.0}
 133 };
 134
 135 static data_set_t count_ds =
 136 {
 137         "ps_count", 2, count_dsrc
 138 };
 139
 140 static data_source_t pagefaults_dsrc[2] =
 141 {
 142         /* max = 2^63 - 1 */
 143         {"minflt", DS_TYPE_COUNTER, 0.0, 9223372036854775807.0},
 144         {"majflt", DS_TYPE_COUNTER, 0.0, 9223372036854775807.0}
 145 };
 146
 147 static data_set_t pagefaults_ds =
 148 {
 149         "ps_pagefaults", 2, pagefaults_dsrc
 150 };
 151
 152 #if PROCESSES_HAVE_READ
 153 #if HAVE_THREAD_INFO | KERNEL_LINUX
 154 static const char *config_keys[] =
 155 {
 156         "Process",
 157         NULL
 158 };
 159 static int config_keys_num = 1;
 160 #endif
 161
 162 typedef struct procstat_entry_s
 163 {
 164         unsigned long id;
 165         unsigned long age;
 166
 167         unsigned long num_proc;
 168         unsigned long num_lwp;
 169         unsigned long vmem_rss;
 170
 171         unsigned long vmem_minflt;
 172         unsigned long vmem_majflt;
 173         unsigned long vmem_minflt_counter;
 174         unsigned long vmem_majflt_counter;
 175
 176         unsigned long cpu_user;
 177         unsigned long cpu_system;
 178         unsigned long cpu_user_counter;
 179         unsigned long cpu_system_counter;
 180
 181         struct procstat_entry_s *next;
 182 } procstat_entry_t;
 183
 184 #define PROCSTAT_NAME_LEN 256
 185 typedef struct procstat
 186 {
 187         char          name[PROCSTAT_NAME_LEN];
 188
 189         unsigned long num_proc;
 190         unsigned long num_lwp;
 191         unsigned long vmem_rss;
 192
 193         unsigned long vmem_minflt_counter;
 194         unsigned long vmem_majflt_counter;
 195
 196         unsigned long cpu_user_counter;
 197         unsigned long cpu_system_counter;
 198
 199         struct procstat   *next;
 200         struct procstat_entry_s *instances;
 201 } procstat_t;
 202
 203 #if HAVE_THREAD_INFO | KERNEL_LINUX
 204 static procstat_t *list_head_g = NULL;
 205 #endif
 206
 207 #if HAVE_THREAD_INFO
 208 static mach_port_t port_host_self;
 209 static mach_port_t port_task_self;
 210
 211 static processor_set_name_array_t pset_list;
 212 static mach_msg_type_number_t     pset_list_len;
 213 /* #endif HAVE_THREAD_INFO */
 214
 215 #elif KERNEL_LINUX
 216 static long pagesize_g;
 217 #endif /* KERNEL_LINUX */
 218
 219 #if HAVE_THREAD_INFO | KERNEL_LINUX
 220 static void ps_list_register (const char *name)
 221 {
 222         procstat_t *new;
 223         procstat_t *ptr;
 224
 225         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 226                 return;
 227         memset (new, 0, sizeof (procstat_t));
 228         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 229
 230         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 231         {
 232                 if (strcmp (ptr->name, name) == 0)
 233                         return;
 234                 if (ptr->next == NULL)
 235                         break;
 236         }
 237
 238         if (ptr == NULL)
 239                 list_head_g = new;
 240         else
 241                 ptr->next = new;
 242 }
 243
 244 static procstat_t *ps_list_search (const char *name)
 245 {
 246         procstat_t *ptr;
 247
 248         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 249                 if (strcmp (ptr->name, name) == 0)
 250                         break;
 251
 252         return (ptr);
 253 }
 254
 255 static void ps_list_add (const char *name, procstat_entry_t *entry)
 256 {
 257         procstat_t *ps;
 258         procstat_entry_t *pse;
 259
 260         if (entry->id == 0)
 261                 return;
 262
 263         if ((ps = ps_list_search (name)) == NULL)
 264                 return;
 265
 266         for (pse = ps->instances; pse != NULL; pse = pse->next)
 267                 if ((pse->id == entry->id) || (pse->next == NULL))
 268                         break;
 269
 270         if ((pse == NULL) || (pse->id != entry->id))
 271         {
 272                 procstat_entry_t *new;
 273
 274                 new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 275                 if (new == NULL)
 276                         return;
 277                 memset (new, 0, sizeof (procstat_entry_t));
 278                 new->id = entry->id;
 279
 280                 if (pse == NULL)
 281                         ps->instances = new;
 282                 else
 283                         pse->next = new;
 284
 285                 pse = new;
 286         }
 287
 288         pse->age = 0;
 289         pse->num_proc = entry->num_proc;
 290         pse->num_lwp  = entry->num_lwp;
 291         pse->vmem_rss = entry->vmem_rss;
 292
 293         ps->num_proc += pse->num_proc;
 294         ps->num_lwp  += pse->num_lwp;
 295         ps->vmem_rss += pse->vmem_rss;
 296
 297         if ((entry->vmem_minflt_counter == 0)
 298                         && (entry->vmem_majflt_counter == 0))
 299         {
 300                 pse->vmem_minflt_counter += entry->vmem_minflt;
 301                 pse->vmem_minflt = entry->vmem_minflt;
 302
 303                 pse->vmem_majflt_counter += entry->vmem_majflt;
 304                 pse->vmem_majflt = entry->vmem_majflt;
 305         }
 306         else
 307         {
 308                 if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 309                 {
 310                         pse->vmem_minflt = entry->vmem_minflt_counter
 311                                 + (ULONG_MAX - pse->vmem_minflt_counter);
 312                 }
 313                 else
 314                 {
 315                         pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 316                 }
 317                 pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 318
 319                 if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 320                 {
 321                         pse->vmem_majflt = entry->vmem_majflt_counter
 322                                 + (ULONG_MAX - pse->vmem_majflt_counter);
 323                 }
 324                 else
 325                 {
 326                         pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 327                 }
 328                 pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 329         }
 330
 331         ps->vmem_minflt_counter += pse->vmem_minflt;
 332         ps->vmem_majflt_counter += pse->vmem_majflt;
 333
 334         if ((entry->cpu_user_counter == 0)
 335                         && (entry->cpu_system_counter == 0))
 336         {
 337                 pse->cpu_user_counter += entry->cpu_user;
 338                 pse->cpu_user = entry->cpu_user;
 339
 340                 pse->cpu_system_counter += entry->cpu_system;
 341                 pse->cpu_system = entry->cpu_system;
 342         }
 343         else
 344         {
 345                 if (entry->cpu_user_counter < pse->cpu_user_counter)
 346                 {
 347                         pse->cpu_user = entry->cpu_user_counter
 348                                 + (ULONG_MAX - pse->cpu_user_counter);
 349                 }
 350                 else
 351                 {
 352                         pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 353                 }
 354                 pse->cpu_user_counter = entry->cpu_user_counter;
 355
 356                 if (entry->cpu_system_counter < pse->cpu_system_counter)
 357                 {
 358                         pse->cpu_system = entry->cpu_system_counter
 359                                 + (ULONG_MAX - pse->cpu_system_counter);
 360                 }
 361                 else
 362                 {
 363                         pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 364                 }
 365                 pse->cpu_system_counter = entry->cpu_system_counter;
 366         }
 367
 368         ps->cpu_user_counter   += pse->cpu_user;
 369         ps->cpu_system_counter += pse->cpu_system;
 370 }
 371
 372 static void ps_list_reset (void)
 373 {
 374         procstat_t *ps;
 375         procstat_entry_t *pse;
 376         procstat_entry_t *pse_prev;
 377
 378         for (ps = list_head_g; ps != NULL; ps = ps->next)
 379         {
 380                 ps->num_proc    = 0;
 381                 ps->num_lwp     = 0;
 382                 ps->vmem_rss    = 0;
 383
 384                 pse_prev = NULL;
 385                 pse = ps->instances;
 386                 while (pse != NULL)
 387                 {
 388                         if (pse->age > 10)
 389                         {
 390                                 DEBUG ("Removing this procstat entry cause it's too old: "
 391                                                 "id = %lu; name = %s;",
 392                                                 pse->id, ps->name);
 393
 394                                 if (pse_prev == NULL)
 395                                 {
 396                                         ps->instances = pse->next;
 397                                         free (pse);
 398                                         pse = ps->instances;
 399                                 }
 400                                 else
 401                                 {
 402                                         pse_prev->next = pse->next;
 403                                         free (pse);
 404                                         pse = pse_prev->next;
 405                                 }
 406                         }
 407                         else
 408                         {
 409                                 pse->age++;
 410                                 pse_prev = pse;
 411                                 pse = pse->next;
 412                         }
 413                 } /* while (pse != NULL) */
 414         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 415 }
 416
 417 static int ps_config (const char *key, const char *value)
 418 {
 419         if (strcasecmp (key, "Process") == 0)
 420         {
 421                 ps_list_register (value);
 422         }
 423         else
 424         {
 425                 return (-1);
 426         }
 427
 428         return (0);
 429 }
 430 #endif /* HAVE_THREAD_INFO | KERNEL_LINUX */
 431
 432 static int ps_init (void)
 433 {
 434 #if HAVE_THREAD_INFO
 435         kern_return_t status;
 436
 437         port_host_self = mach_host_self ();
 438         port_task_self = mach_task_self ();
 439
 440         if (pset_list != NULL)
 441         {
 442                 vm_deallocate (port_task_self,
 443                                 (vm_address_t) pset_list,
 444                                 pset_list_len * sizeof (processor_set_t));
 445                 pset_list = NULL;
 446                 pset_list_len = 0;
 447         }
 448
 449         if ((status = host_processor_sets (port_host_self,
 450                                         &pset_list,
 451                                         &pset_list_len)) != KERN_SUCCESS)
 452         {
 453                 ERROR ("host_processor_sets failed: %s\n",
 454                                 mach_error_string (status));
 455                 pset_list = NULL;
 456                 pset_list_len = 0;
 457                 return (-1);
 458         }
 459 /* #endif HAVE_THREAD_INFO */
 460
 461 #elif KERNEL_LINUX
 462         pagesize_g = sysconf(_SC_PAGESIZE);
 463         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 464                         pagesize_g, CONFIG_HZ);
 465 #endif /* KERNEL_LINUX */
 466
 467         return (0);
 468 } /* int ps_init */
 469
 470 static void ps_submit_state (const char *state, double value)
 471 {
 472         value_t values[1];
 473         value_list_t vl = VALUE_LIST_INIT;
 474
 475         values[0].gauge = value;
 476
 477         vl.values = values;
 478         vl.values_len = 1;
 479         vl.time = time (NULL);
 480         strcpy (vl.host, hostname_g);
 481         strcpy (vl.plugin, "processes");
 482         strcpy (vl.plugin_instance, "");
 483         strncpy (vl.type_instance, state, sizeof (vl.type_instance));
 484
 485         plugin_dispatch_values ("ps_state", &vl);
 486 }
 487
 488 static void ps_submit_proc_list (procstat_t *ps)
 489 {
 490         value_t values[2];
 491         value_list_t vl = VALUE_LIST_INIT;
 492
 493         vl.values = values;
 494         vl.values_len = 2;
 495         vl.time = time (NULL);
 496         strcpy (vl.host, hostname_g);
 497         strcpy (vl.plugin, "processes");
 498         strncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 499
 500         vl.values[0].gauge = ps->vmem_rss;
 501         vl.values_len = 1;
 502         plugin_dispatch_values ("ps_rss", &vl);
 503
 504         vl.values[0].counter = ps->cpu_user_counter;
 505         vl.values[1].counter = ps->cpu_system_counter;
 506         vl.values_len = 2;
 507         plugin_dispatch_values ("ps_cputime", &vl);
 508
 509         vl.values[0].gauge = ps->num_proc;
 510         vl.values[1].gauge = ps->num_lwp;
 511         vl.values_len = 2;
 512         plugin_dispatch_values ("ps_count", &vl);
 513
 514         vl.values[0].counter = ps->vmem_minflt_counter;
 515         vl.values[1].counter = ps->vmem_majflt_counter;
 516         vl.values_len = 2;
 517         plugin_dispatch_values ("ps_pagefaults", &vl);
 518
 519         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 520                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 521                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 522                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 523                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 524                         ps->cpu_user_counter, ps->cpu_system_counter);
 525 } /* void ps_submit_proc_list */
 526
 527 #if KERNEL_LINUX
 528 static int *ps_read_tasks (int pid)
 529 {
 530         int *list = NULL;
 531         int  list_size = 1; /* size of allocated space, in elements */
 532         int  list_len = 0;  /* number of currently used elements */
 533
 534         char           dirname[64];
 535         DIR           *dh;
 536         struct dirent *ent;
 537
 538         snprintf (dirname, 64, "/proc/%i/task", pid);
 539         dirname[63] = '\0';
 540
 541         if ((dh = opendir (dirname)) == NULL)
 542         {
 543                 DEBUG ("Failed to open directory `%s'", dirname);
 544                 return (NULL);
 545         }
 546
 547         while ((ent = readdir (dh)) != NULL)
 548         {
 549                 if (!isdigit (ent->d_name[0]))
 550                         continue;
 551
 552                 if ((list_len + 1) >= list_size)
 553                 {
 554                         int *new_ptr;
 555                         int  new_size = 2 * list_size;
 556                         /* Comes in sizes: 2, 4, 8, 16, ... */
 557
 558                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 559                         if (new_ptr == NULL)
 560                         {
 561                                 if (list != NULL)
 562                                         free (list);
 563                                 ERROR ("processes plugin: "
 564                                                 "Failed to allocate more memory.");
 565                                 return (NULL);
 566                         }
 567
 568                         list = new_ptr;
 569                         list_size = new_size;
 570
 571                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 572                 }
 573
 574                 list[list_len] = atoi (ent->d_name);
 575                 if (list[list_len] != 0)
 576                         list_len++;
 577         }
 578
 579         closedir (dh);
 580
 581         assert (list_len < list_size);
 582         assert (list[list_len] == 0);
 583
 584         return (list);
 585 }
 586
 587 int ps_read_process (int pid, procstat_t *ps, char *state)
 588 {
 589         char  filename[64];
 590         char  buffer[1024];
 591         FILE *fh;
 592
 593         char *fields[64];
 594         char  fields_len;
 595
 596         int  *tasks;
 597         int   i;
 598
 599         int   ppid;
 600         int   name_len;
 601
 602         long long unsigned cpu_user_counter;
 603         long long unsigned cpu_system_counter;
 604         long long unsigned vmem_rss;
 605
 606         memset (ps, 0, sizeof (procstat_t));
 607
 608         snprintf (filename, 64, "/proc/%i/stat", pid);
 609         filename[63] = '\0';
 610
 611         if ((fh = fopen (filename, "r")) == NULL)
 612                 return (-1);
 613
 614         if (fgets (buffer, 1024, fh) == NULL)
 615         {
 616                 fclose (fh);
 617                 return (-1);
 618         }
 619
 620         fclose (fh);
 621
 622         fields_len = strsplit (buffer, fields, 64);
 623         if (fields_len < 24)
 624         {
 625                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 626                                 " `%s' has only %i fields..",
 627                                 (int) pid, filename, fields_len);
 628                 return (-1);
 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                 DEBUG ("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                 DEBUG ("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                 DEBUG ("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         DEBUG ("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                         ERROR ("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                         ERROR ("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                                         ERROR ("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                                         ERROR ("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                                         ERROR ("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                                 DEBUG ("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                                         ERROR ("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                                                 WARNING ("Unknown thread status: %s",
 917                                                                 thread_data.run_state);
 918                                                 break;
 919                                 } /* switch (thread_data.run_state) */
 920
 921                                 if (task_list[task] != port_task_self)
 922                                 {
 923                                         status = mach_port_deallocate (port_task_self,
 924                                                         thread_list[thread]);
 925                                         if (status != KERN_SUCCESS)
 926                                                 ERROR ("mach_port_deallocate failed: %s",
 927                                                                 mach_error_string (status));
 928                                 }
 929                         } /* for (thread_list) */
 930
 931                         if ((status = vm_deallocate (port_task_self,
 932                                                         (vm_address_t) thread_list,
 933                                                         thread_list_len * sizeof (thread_act_t)))
 934                                         != KERN_SUCCESS)
 935                         {
 936                                 ERROR ("vm_deallocate failed: %s",
 937                                                 mach_error_string (status));
 938                         }
 939                         thread_list = NULL;
 940                         thread_list_len = 0;
 941
 942                         /* Only deallocate the task port, if it isn't our own.
 943                          * Don't know what would happen in that case, but this
 944                          * is what Apple's top does.. ;) */
 945                         if (task_list[task] != port_task_self)
 946                         {
 947                                 status = mach_port_deallocate (port_task_self,
 948                                                 task_list[task]);
 949                                 if (status != KERN_SUCCESS)
 950                                         ERROR ("mach_port_deallocate failed: %s",
 951                                                         mach_error_string (status));
 952                         }
 953
 954                         if (ps != NULL)
 955                                 ps_list_add (task_name, &pse);
 956                 } /* for (task_list) */
 957
 958                 if ((status = vm_deallocate (port_task_self,
 959                                 (vm_address_t) task_list,
 960                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 961                 {
 962                         ERROR ("vm_deallocate failed: %s",
 963                                         mach_error_string (status));
 964                 }
 965                 task_list = NULL;
 966                 task_list_len = 0;
 967
 968                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 969                                 != KERN_SUCCESS)
 970                 {
 971                         ERROR ("mach_port_deallocate failed: %s",
 972                                         mach_error_string (status));
 973                 }
 974         } /* for (pset_list) */
 975
 976         ps_submit_state ("running", running);
 977         ps_submit_state ("sleeping", sleeping);
 978         ps_submit_state ("zombies", zombies);
 979         ps_submit_state ("stopped", stopped);
 980         ps_submit_state ("blocked", blocked);
 981
 982         for (ps = list_head_g; ps != NULL; ps = ps->next)
 983                 ps_submit_proc_list (ps);
 984 /* #endif HAVE_THREAD_INFO */
 985
 986 #elif KERNEL_LINUX
 987         int running  = 0;
 988         int sleeping = 0;
 989         int zombies  = 0;
 990         int stopped  = 0;
 991         int paging   = 0;
 992         int blocked  = 0;
 993
 994         struct dirent *ent;
 995         DIR           *proc;
 996         int            pid;
 997
 998         int        status;
 999         procstat_t ps;
1000         procstat_entry_t pse;
1001         char       state;
1002
1003         procstat_t *ps_ptr;
1004
1005         running = sleeping = zombies = stopped = paging = blocked = 0;
1006         ps_list_reset ();
1007
1008         if ((proc = opendir ("/proc")) == NULL)
1009         {
1010                 char errbuf[1024];
1011                 ERROR ("Cannot open `/proc': %s",
1012                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1013                 return (-1);
1014         }
1015
1016         while ((ent = readdir (proc)) != NULL)
1017         {
1018                 if (!isdigit (ent->d_name[0]))
1019                         continue;
1020
1021                 if ((pid = atoi (ent->d_name)) < 1)
1022                         continue;
1023
1024                 status = ps_read_process (pid, &ps, &state);
1025                 if (status != 0)
1026                 {
1027                         DEBUG ("ps_read_process failed: %i", status);
1028                         continue;
1029                 }
1030
1031                 pse.id       = pid;
1032                 pse.age      = 0;
1033
1034                 pse.num_proc = ps.num_proc;
1035                 pse.num_lwp  = ps.num_lwp;
1036                 pse.vmem_rss = ps.vmem_rss;
1037
1038                 pse.vmem_minflt = 0;
1039                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1040                 pse.vmem_majflt = 0;
1041                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1042
1043                 pse.cpu_user = 0;
1044                 pse.cpu_user_counter = ps.cpu_user_counter;
1045                 pse.cpu_system = 0;
1046                 pse.cpu_system_counter = ps.cpu_system_counter;
1047
1048                 switch (state)
1049                 {
1050                         case 'R': running++;  break;
1051                         case 'S': sleeping++; break;
1052                         case 'D': blocked++;  break;
1053                         case 'Z': zombies++;  break;
1054                         case 'T': stopped++;  break;
1055                         case 'W': paging++;   break;
1056                 }
1057
1058                 ps_list_add (ps.name, &pse);
1059         }
1060
1061         closedir (proc);
1062
1063         ps_submit_state ("running",  running);
1064         ps_submit_state ("sleeping", sleeping);
1065         ps_submit_state ("zombies",  zombies);
1066         ps_submit_state ("stopped",  stopped);
1067         ps_submit_state ("paging",   paging);
1068         ps_submit_state ("blocked",  blocked);
1069
1070         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1071                 ps_submit_proc_list (ps_ptr);
1072 #endif /* KERNEL_LINUX */
1073
1074         return (0);
1075 } /* int ps_read */
1076 #endif /* PROCESSES_HAVE_READ */
1077
1078 void module_register (modreg_e load)
1079 {
1080         if (load & MR_DATASETS)
1081         {
1082                 plugin_register_data_set (&state_ds);
1083                 plugin_register_data_set (&rss_ds);
1084                 plugin_register_data_set (&time_ds);
1085                 plugin_register_data_set (&count_ds);
1086                 plugin_register_data_set (&pagefaults_ds);
1087         }
1088
1089 #if PROCESSES_HAVE_READ
1090         if (load & MR_READ)
1091         {
1092 #if HAVE_THREAD_INFO | KERNEL_LINUX
1093                 plugin_register_config ("processes", ps_config,
1094                                 config_keys, config_keys_num);
1095 #endif
1096                 plugin_register_init ("processes", ps_init);
1097                 plugin_register_read ("processes", ps_read);
1098         }
1099 #endif /* PROCESSES_HAVE_READ */
1100 } /* void module_register */