src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006  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 char *processes_file = "processes.rrd";
  97 static char *processes_ds_def[] =
  98 {
  99         "DS:running:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 100         "DS:sleeping:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 101         "DS:zombies:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 102         "DS:stopped:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 103         "DS:paging:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 104         "DS:blocked:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 105         NULL
 106 };
 107 static int processes_ds_num = 6;
 108
 109 static char *ps_rss_file = "processes/ps_rss-%s.rrd";
 110 static char *ps_rss_ds_def[] =
 111 {
 112         /* max = 2^63 - 1 */
 113         "DS:byte:GAUGE:"COLLECTD_HEARTBEAT":0:9223372036854775807",
 114         NULL
 115 };
 116 static int ps_rss_ds_num = 1;
 117
 118 static char *ps_cputime_file = "processes/ps_cputime-%s.rrd";
 119 static char *ps_cputime_ds_def[] =
 120 {
 121         /* 1 second in user-mode per second ought to be enough.. */
 122         "DS:user:COUNTER:"COLLECTD_HEARTBEAT":0:1000000",
 123         "DS:syst:COUNTER:"COLLECTD_HEARTBEAT":0:1000000",
 124         NULL
 125 };
 126 static int ps_cputime_ds_num = 2;
 127
 128 static char *ps_count_file = "processes/ps_count-%s.rrd";
 129 static char *ps_count_ds_def[] =
 130 {
 131         "DS:processes:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 132         "DS:threads:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 133         NULL
 134 };
 135 static int ps_count_ds_num = 2;
 136
 137 static char *ps_pagefaults_file = "processes/ps_pagefaults-%s.rrd";
 138 static char *ps_pagefaults_ds_def[] =
 139 {
 140         /* max = 2^63 - 1 */
 141         "DS:minflt:COUNTER:"COLLECTD_HEARTBEAT":0:9223372036854775807",
 142         "DS:majflt:COUNTER:"COLLECTD_HEARTBEAT":0:9223372036854775807",
 143         NULL
 144 };
 145 static int ps_pagefaults_ds_num = 2;
 146
 147 static char *config_keys[] =
 148 {
 149         "Process",
 150         NULL
 151 };
 152 static int config_keys_num = 1;
 153
 154 typedef struct procstat_entry_s
 155 {
 156         unsigned long id;
 157         unsigned long age;
 158
 159         unsigned long num_proc;
 160         unsigned long num_lwp;
 161         unsigned long vmem_rss;
 162
 163         unsigned long vmem_minflt;
 164         unsigned long vmem_majflt;
 165         unsigned long vmem_minflt_counter;
 166         unsigned long vmem_majflt_counter;
 167
 168         unsigned long cpu_user;
 169         unsigned long cpu_system;
 170         unsigned long cpu_user_counter;
 171         unsigned long cpu_system_counter;
 172
 173         struct procstat_entry_s *next;
 174 } procstat_entry_t;
 175
 176 #define PROCSTAT_NAME_LEN 256
 177 typedef struct procstat
 178 {
 179         char          name[PROCSTAT_NAME_LEN];
 180
 181         unsigned long num_proc;
 182         unsigned long num_lwp;
 183         unsigned long vmem_rss;
 184
 185         unsigned long vmem_minflt_counter;
 186         unsigned long vmem_majflt_counter;
 187
 188         unsigned long cpu_user_counter;
 189         unsigned long cpu_system_counter;
 190
 191         struct procstat   *next;
 192         struct procstat_entry_s *instances;
 193 } procstat_t;
 194
 195 static procstat_t *list_head_g = NULL;
 196
 197 #if HAVE_THREAD_INFO
 198 static mach_port_t port_host_self;
 199 static mach_port_t port_task_self;
 200
 201 static processor_set_name_array_t pset_list;
 202 static mach_msg_type_number_t     pset_list_len;
 203 /* #endif HAVE_THREAD_INFO */
 204
 205 #elif KERNEL_LINUX
 206 static long pagesize_g;
 207 #endif /* KERNEL_LINUX */
 208
 209 #if HAVE_THREAD_INFO | KERNEL_LINUX
 210 static void ps_list_register (const char *name)
 211 {
 212         procstat_t *new;
 213         procstat_t *ptr;
 214
 215         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 216                 return;
 217         memset (new, 0, sizeof (procstat_t));
 218         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 219
 220         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 221         {
 222                 if (strcmp (ptr->name, name) == 0)
 223                         return;
 224                 if (ptr->next == NULL)
 225                         break;
 226         }
 227
 228         if (ptr == NULL)
 229                 list_head_g = new;
 230         else
 231                 ptr->next = new;
 232 }
 233
 234 static procstat_t *ps_list_search (const char *name)
 235 {
 236         procstat_t *ptr;
 237
 238         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 239                 if (strcmp (ptr->name, name) == 0)
 240                         break;
 241
 242         return (ptr);
 243 }
 244
 245 static void ps_list_add (const char *name, procstat_entry_t *entry)
 246 {
 247         procstat_t *ps;
 248         procstat_entry_t *pse;
 249
 250         if (entry->id == 0)
 251                 return;
 252
 253         if ((ps = ps_list_search (name)) == NULL)
 254                 return;
 255
 256         for (pse = ps->instances; pse != NULL; pse = pse->next)
 257                 if ((pse->id == entry->id) || (pse->next == NULL))
 258                         break;
 259
 260         if ((pse == NULL) || (pse->id != entry->id))
 261         {
 262                 procstat_entry_t *new;
 263
 264                 new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 265                 if (new == NULL)
 266                         return;
 267                 memset (new, 0, sizeof (procstat_entry_t));
 268                 new->id = entry->id;
 269
 270                 if (pse == NULL)
 271                         ps->instances = new;
 272                 else
 273                         pse->next = new;
 274
 275                 pse = new;
 276         }
 277
 278         pse->age = 0;
 279         pse->num_proc = entry->num_proc;
 280         pse->num_lwp  = entry->num_lwp;
 281         pse->vmem_rss = entry->vmem_rss;
 282
 283         ps->num_proc += pse->num_proc;
 284         ps->num_lwp  += pse->num_lwp;
 285         ps->vmem_rss += pse->vmem_rss;
 286
 287         if ((entry->vmem_minflt_counter == 0)
 288                         && (entry->vmem_majflt_counter == 0))
 289         {
 290                 pse->vmem_minflt_counter += entry->vmem_minflt;
 291                 pse->vmem_minflt = entry->vmem_minflt;
 292
 293                 pse->vmem_majflt_counter += entry->vmem_majflt;
 294                 pse->vmem_majflt = entry->vmem_majflt;
 295         }
 296         else
 297         {
 298                 if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 299                 {
 300                         pse->vmem_minflt = entry->vmem_minflt_counter
 301                                 + (ULONG_MAX - pse->vmem_minflt_counter);
 302                 }
 303                 else
 304                 {
 305                         pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 306                 }
 307                 pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 308
 309                 if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 310                 {
 311                         pse->vmem_majflt = entry->vmem_majflt_counter
 312                                 + (ULONG_MAX - pse->vmem_majflt_counter);
 313                 }
 314                 else
 315                 {
 316                         pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 317                 }
 318                 pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 319         }
 320
 321         ps->vmem_minflt_counter += pse->vmem_minflt;
 322         ps->vmem_majflt_counter += pse->vmem_majflt;
 323
 324         if ((entry->cpu_user_counter == 0)
 325                         && (entry->cpu_system_counter == 0))
 326         {
 327                 pse->cpu_user_counter += entry->cpu_user;
 328                 pse->cpu_user = entry->cpu_user;
 329
 330                 pse->cpu_system_counter += entry->cpu_system;
 331                 pse->cpu_system = entry->cpu_system;
 332         }
 333         else
 334         {
 335                 if (entry->cpu_user_counter < pse->cpu_user_counter)
 336                 {
 337                         pse->cpu_user = entry->cpu_user_counter
 338                                 + (ULONG_MAX - pse->cpu_user_counter);
 339                 }
 340                 else
 341                 {
 342                         pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 343                 }
 344                 pse->cpu_user_counter = entry->cpu_user_counter;
 345
 346                 if (entry->cpu_system_counter < pse->cpu_system_counter)
 347                 {
 348                         pse->cpu_system = entry->cpu_system_counter
 349                                 + (ULONG_MAX - pse->cpu_system_counter);
 350                 }
 351                 else
 352                 {
 353                         pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 354                 }
 355                 pse->cpu_system_counter = entry->cpu_system_counter;
 356         }
 357
 358         ps->cpu_user_counter   += pse->cpu_user;
 359         ps->cpu_system_counter += pse->cpu_system;
 360 }
 361
 362 static void ps_list_reset (void)
 363 {
 364         procstat_t *ps;
 365         procstat_entry_t *pse;
 366         procstat_entry_t *pse_prev;
 367
 368         for (ps = list_head_g; ps != NULL; ps = ps->next)
 369         {
 370                 ps->num_proc    = 0;
 371                 ps->num_lwp     = 0;
 372                 ps->vmem_rss    = 0;
 373
 374                 pse_prev = NULL;
 375                 pse = ps->instances;
 376                 while (pse != NULL)
 377                 {
 378                         if (pse->age > 10)
 379                         {
 380                                 DBG ("Removing this procstat entry cause it's too old: "
 381                                                 "id = %lu; name = %s;",
 382                                                 pse->id, ps->name);
 383
 384                                 if (pse_prev == NULL)
 385                                 {
 386                                         ps->instances = pse->next;
 387                                         free (pse);
 388                                         pse = ps->instances;
 389                                 }
 390                                 else
 391                                 {
 392                                         pse_prev->next = pse->next;
 393                                         free (pse);
 394                                         pse = pse_prev->next;
 395                                 }
 396                         }
 397                         else
 398                         {
 399                                 pse->age++;
 400                                 pse_prev = pse;
 401                                 pse = pse->next;
 402                         }
 403                 } /* while (pse != NULL) */
 404         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 405 }
 406 #endif /* HAVE_THREAD_INFO | KERNEL_LINUX */
 407
 408 static int ps_config (char *key, char *value)
 409 {
 410         if (strcasecmp (key, "Process") == 0)
 411         {
 412                 ps_list_register (value);
 413         }
 414         else
 415         {
 416                 return (-1);
 417         }
 418
 419         return (0);
 420 }
 421
 422 static void ps_init (void)
 423 {
 424 #if HAVE_THREAD_INFO
 425         kern_return_t status;
 426
 427         port_host_self = mach_host_self ();
 428         port_task_self = mach_task_self ();
 429
 430         if (pset_list != NULL)
 431         {
 432                 vm_deallocate (port_task_self,
 433                                 (vm_address_t) pset_list,
 434                                 pset_list_len * sizeof (processor_set_t));
 435                 pset_list = NULL;
 436                 pset_list_len = 0;
 437         }
 438
 439         if ((status = host_processor_sets (port_host_self,
 440                                         &pset_list,
 441                                         &pset_list_len)) != KERN_SUCCESS)
 442         {
 443                 syslog (LOG_ERR, "host_processor_sets failed: %s\n",
 444                                 mach_error_string (status));
 445                 pset_list = NULL;
 446                 pset_list_len = 0;
 447                 return;
 448         }
 449 /* #endif HAVE_THREAD_INFO */
 450
 451 #elif KERNEL_LINUX
 452         pagesize_g = sysconf(_SC_PAGESIZE);
 453         DBG ("pagesize_g = %li; CONFIG_HZ = %i;",
 454                         pagesize_g, CONFIG_HZ);
 455 #endif /* KERNEL_LINUX */
 456
 457         return;
 458 }
 459
 460 static void ps_write (char *host, char *inst, char *val)
 461 {
 462         rrd_update_file (host, processes_file, val,
 463                         processes_ds_def, processes_ds_num);
 464 }
 465
 466 static void ps_rss_write (char *host, char *inst, char *val)
 467 {
 468         char filename[256];
 469         int status;
 470
 471         status = snprintf (filename, 256, ps_rss_file, inst);
 472         if ((status < 1) || (status >= 256))
 473                 return;
 474
 475         rrd_update_file (host, filename, val, ps_rss_ds_def, ps_rss_ds_num);
 476 }
 477
 478 static void ps_cputime_write (char *host, char *inst, char *val)
 479 {
 480         char filename[256];
 481         int status;
 482
 483         status = snprintf (filename, 256, ps_cputime_file, inst);
 484         if ((status < 1) || (status >= 256))
 485                 return;
 486
 487         DBG ("host = %s; filename = %s; val = %s;",
 488                         host, filename, val);
 489         rrd_update_file (host, filename, val,
 490                         ps_cputime_ds_def, ps_cputime_ds_num);
 491 }
 492
 493 static void ps_count_write (char *host, char *inst, char *val)
 494 {
 495         char filename[256];
 496         int status;
 497
 498         status = snprintf (filename, 256, ps_count_file, inst);
 499         if ((status < 1) || (status >= 256))
 500                 return;
 501
 502         DBG ("host = %s; filename = %s; val = %s;",
 503                         host, filename, val);
 504         rrd_update_file (host, filename, val,
 505                         ps_count_ds_def, ps_count_ds_num);
 506 }
 507
 508 static void ps_pagefaults_write (char *host, char *inst, char *val)
 509 {
 510         char filename[256];
 511         int status;
 512
 513         status = snprintf (filename, 256, ps_pagefaults_file, inst);
 514         if ((status < 1) || (status >= 256))
 515                 return;
 516
 517         DBG ("host = %s; filename = %s; val = %s;",
 518                         host, filename, val);
 519         rrd_update_file (host, filename, val,
 520                         ps_pagefaults_ds_def, ps_pagefaults_ds_num);
 521 }
 522
 523 #if PROCESSES_HAVE_READ
 524 static void ps_submit (int running,
 525                 int sleeping,
 526                 int zombies,
 527                 int stopped,
 528                 int paging,
 529                 int blocked)
 530 {
 531         char buf[BUFSIZE];
 532
 533         if (snprintf (buf, BUFSIZE, "%u:%i:%i:%i:%i:%i:%i",
 534                                 (unsigned int) curtime,
 535                                 running, sleeping, zombies, stopped, paging,
 536                                 blocked) >= BUFSIZE)
 537                 return;
 538
 539         DBG ("running = %i; sleeping = %i; zombies = %i; stopped = %i; paging = %i; blocked = %i;",
 540                         running, sleeping, zombies, stopped, paging, blocked);
 541
 542         plugin_submit (MODULE_NAME, "-", buf);
 543 }
 544
 545 static void ps_submit_proc_list (procstat_t *ps)
 546 {
 547         char buffer[64];
 548
 549         if (ps == NULL)
 550                 return;
 551
 552         snprintf (buffer, 64, "%u:%lu",
 553                         (unsigned int) curtime,
 554                         ps->vmem_rss);
 555         buffer[63] = '\0';
 556         plugin_submit ("ps_rss", ps->name, buffer);
 557
 558         snprintf (buffer, 64, "%u:%u:%u",
 559                         (unsigned int) curtime,
 560                         /* Make the counter overflow */
 561                         (unsigned int) (ps->cpu_user_counter   & 0xFFFFFFFF),
 562                         (unsigned int) (ps->cpu_system_counter & 0xFFFFFFFF));
 563         buffer[63] = '\0';
 564         plugin_submit ("ps_cputime", ps->name, buffer);
 565
 566         snprintf (buffer, 64, "%u:%lu:%lu",
 567                         (unsigned int) curtime,
 568                         ps->num_proc, ps->num_lwp);
 569         buffer[63] = '\0';
 570         plugin_submit ("ps_count", ps->name, buffer);
 571
 572         snprintf (buffer, 64, "%u:%lu:%lu",
 573                         (unsigned int) curtime,
 574                         ps->vmem_minflt_counter, ps->vmem_majflt_counter);
 575         buffer[63] = '\0';
 576         plugin_submit ("ps_pagefaults", ps->name, buffer);
 577
 578         DBG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 579                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 580                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 581                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 582                         ps->vmem_minflt_counter, ps->vmem_majflt_counter, ps->cpu_user_counter,
 583                         ps->cpu_system_counter);
 584
 585 }
 586
 587 #if KERNEL_LINUX
 588 static int *ps_read_tasks (int pid)
 589 {
 590         int *list = NULL;
 591         int  list_size = 1; /* size of allocated space, in elements */
 592         int  list_len = 0;  /* number of currently used elements */
 593
 594         char           dirname[64];
 595         DIR           *dh;
 596         struct dirent *ent;
 597
 598         snprintf (dirname, 64, "/proc/%i/task", pid);
 599         dirname[63] = '\0';
 600
 601         if ((dh = opendir (dirname)) == NULL)
 602         {
 603                 syslog (LOG_NOTICE, "processes plugin: Failed to open directory `%s'",
 604                                 dirname);
 605                 return (NULL);
 606         }
 607
 608         while ((ent = readdir (dh)) != NULL)
 609         {
 610                 if (!isdigit (ent->d_name[0]))
 611                         continue;
 612
 613                 if ((list_len + 1) >= list_size)
 614                 {
 615                         int *new_ptr;
 616                         int  new_size = 2 * list_size;
 617                         /* Comes in sizes: 2, 4, 8, 16, ... */
 618
 619                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 620                         if (new_ptr == NULL)
 621                         {
 622                                 if (list != NULL)
 623                                         free (list);
 624                                 syslog (LOG_ERR, "processes plugin: "
 625                                                 "Failed to allocate more memory.");
 626                                 return (NULL);
 627                         }
 628
 629                         list = new_ptr;
 630                         list_size = new_size;
 631
 632                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 633                 }
 634
 635                 list[list_len] = atoi (ent->d_name);
 636                 if (list[list_len] != 0)
 637                         list_len++;
 638         }
 639
 640         closedir (dh);
 641
 642         assert (list_len < list_size);
 643         assert (list[list_len] == 0);
 644
 645         return (list);
 646 }
 647
 648 int ps_read_process (int pid, procstat_t *ps, char *state)
 649 {
 650         char  filename[64];
 651         char  buffer[1024];
 652         FILE *fh;
 653
 654         char *fields[64];
 655         char  fields_len;
 656
 657         int  *tasks;
 658         int   i;
 659
 660         int   ppid;
 661         int   name_len;
 662
 663         long long unsigned cpu_user_counter;
 664         long long unsigned cpu_system_counter;
 665         long long unsigned vmem_rss;
 666
 667         memset (ps, 0, sizeof (procstat_t));
 668
 669         snprintf (filename, 64, "/proc/%i/stat", pid);
 670         filename[63] = '\0';
 671
 672         if ((fh = fopen (filename, "r")) == NULL)
 673                 return (-1);
 674
 675         if (fgets (buffer, 1024, fh) == NULL)
 676         {
 677                 fclose (fh);
 678                 return (-1);
 679         }
 680
 681         fclose (fh);
 682
 683         fields_len = strsplit (buffer, fields, 64);
 684         if (fields_len < 24)
 685         {
 686                 DBG ("`%s' has only %i fields..",
 687                                 filename, fields_len);
 688                 return (-1);
 689         }
 690         else if (fields_len != 41)
 691         {
 692                 DBG ("WARNING: (fields_len = %i) != 41", fields_len);
 693         }
 694
 695         /* copy the name, strip brackets in the process */
 696         name_len = strlen (fields[1]) - 2;
 697         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 698         {
 699                 DBG ("No brackets found in process name: `%s'", fields[1]);
 700                 return (-1);
 701         }
 702         fields[1] = fields[1] + 1;
 703         fields[1][name_len] = '\0';
 704         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 705
 706         ppid = atoi (fields[3]);
 707
 708         if ((tasks = ps_read_tasks (pid)) == NULL)
 709         {
 710                 /* This happends for zombied, e.g. */
 711                 DBG ("ps_read_tasks (%i) failed.", pid);
 712                 *state = 'Z';
 713                 ps->num_lwp  = 0;
 714                 ps->num_proc = 0;
 715         }
 716         else
 717         {
 718                 *state = '\0';
 719                 ps->num_lwp  = 0;
 720                 ps->num_proc = 1;
 721                 for (i = 0; tasks[i] != 0; i++)
 722                         ps->num_lwp++;
 723
 724                 free (tasks);
 725                 tasks = NULL;
 726         }
 727
 728         /* Leave the rest at zero if this is only an LWP */
 729         if (ps->num_proc == 0)
 730         {
 731                 DBG ("This is only an LWP: pid = %i; name = %s;",
 732                                 pid, ps->name);
 733                 return (0);
 734         }
 735
 736         cpu_user_counter   = atoll (fields[13]);
 737         cpu_system_counter = atoll (fields[14]);
 738         vmem_rss = atoll (fields[23]);
 739         ps->vmem_minflt_counter = atol (fields[9]);
 740         ps->vmem_majflt_counter = atol (fields[11]);
 741
 742         /* Convert jiffies to useconds */
 743         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 744         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 745         vmem_rss = vmem_rss * pagesize_g;
 746
 747         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 748         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 749         ps->vmem_rss = (unsigned long) vmem_rss;
 750
 751         *state = fields[2][0];
 752
 753         /* success */
 754         return (0);
 755 } /* int ps_read_process (...) */
 756 #endif /* KERNEL_LINUX */
 757
 758 #if HAVE_THREAD_INFO
 759 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 760 {
 761         int mib[4];
 762
 763         struct kinfo_proc kp;
 764         size_t            kp_size;
 765
 766         mib[0] = CTL_KERN;
 767         mib[1] = KERN_PROC;
 768         mib[2] = KERN_PROC_PID;
 769
 770         if (pid_for_task (t, pid) != KERN_SUCCESS)
 771                 return (-1);
 772         mib[3] = *pid;
 773
 774         kp_size = sizeof (kp);
 775         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 776                 return (-1);
 777
 778         if (name_max_len > (MAXCOMLEN + 1))
 779                 name_max_len = MAXCOMLEN + 1;
 780
 781         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 782         name[name_max_len - 1] = '\0';
 783
 784         DBG ("pid = %i; name = %s;", *pid, name);
 785
 786         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 787          * `top' does it, because it is a lot of work and only used when
 788          * debugging. -octo */
 789
 790         return (0);
 791 }
 792 #endif /* HAVE_THREAD_INFO */
 793
 794 static void ps_read (void)
 795 {
 796 #if HAVE_THREAD_INFO
 797         kern_return_t            status;
 798
 799         int                      pset;
 800         processor_set_t          port_pset_priv;
 801
 802         int                      task;
 803         task_array_t             task_list;
 804         mach_msg_type_number_t   task_list_len;
 805
 806         int                      task_pid;
 807         char                     task_name[MAXCOMLEN + 1];
 808
 809         int                      thread;
 810         thread_act_array_t       thread_list;
 811         mach_msg_type_number_t   thread_list_len;
 812         thread_basic_info_data_t thread_data;
 813         mach_msg_type_number_t   thread_data_len;
 814
 815         int running  = 0;
 816         int sleeping = 0;
 817         int zombies  = 0;
 818         int stopped  = 0;
 819         int blocked  = 0;
 820
 821         procstat_t *ps;
 822         procstat_entry_t pse;
 823
 824         ps_list_reset ();
 825
 826         /*
 827          * The Mach-concept is a little different from the traditional UNIX
 828          * concept: All the work is done in threads. Threads are contained in
 829          * `tasks'. Therefore, `task status' doesn't make much sense, since
 830          * it's actually a `thread status'.
 831          * Tasks are assigned to sets of processors, so that's where you go to
 832          * get a list.
 833          */
 834         for (pset = 0; pset < pset_list_len; pset++)
 835         {
 836                 if ((status = host_processor_set_priv (port_host_self,
 837                                                 pset_list[pset],
 838                                                 &port_pset_priv)) != KERN_SUCCESS)
 839                 {
 840                         syslog (LOG_ERR, "host_processor_set_priv failed: %s\n",
 841                                         mach_error_string (status));
 842                         continue;
 843                 }
 844
 845                 if ((status = processor_set_tasks (port_pset_priv,
 846                                                 &task_list,
 847                                                 &task_list_len)) != KERN_SUCCESS)
 848                 {
 849                         syslog (LOG_ERR, "processor_set_tasks failed: %s\n",
 850                                         mach_error_string (status));
 851                         mach_port_deallocate (port_task_self, port_pset_priv);
 852                         continue;
 853                 }
 854
 855                 for (task = 0; task < task_list_len; task++)
 856                 {
 857                         ps = NULL;
 858                         if (mach_get_task_name (task_list[task],
 859                                                 &task_pid,
 860                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 861                                 ps = ps_list_search (task_name);
 862
 863                         /* Collect more detailed statistics for this process */
 864                         if (ps != NULL)
 865                         {
 866                                 task_basic_info_data_t        task_basic_info;
 867                                 mach_msg_type_number_t        task_basic_info_len;
 868                                 task_events_info_data_t       task_events_info;
 869                                 mach_msg_type_number_t        task_events_info_len;
 870                                 task_absolutetime_info_data_t task_absolutetime_info;
 871                                 mach_msg_type_number_t        task_absolutetime_info_len;
 872
 873                                 memset (&pse, '\0', sizeof (pse));
 874                                 pse.id = task_pid;
 875
 876                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 877                                 status = task_info (task_list[task],
 878                                                 TASK_BASIC_INFO,
 879                                                 (task_info_t) &task_basic_info,
 880                                                 &task_basic_info_len);
 881                                 if (status != KERN_SUCCESS)
 882                                 {
 883                                         syslog (LOG_ERR, "task_info failed: %s",
 884                                                         mach_error_string (status));
 885                                         continue; /* with next thread_list */
 886                                 }
 887
 888                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 889                                 status = task_info (task_list[task],
 890                                                 TASK_EVENTS_INFO,
 891                                                 (task_info_t) &task_events_info,
 892                                                 &task_events_info_len);
 893                                 if (status != KERN_SUCCESS)
 894                                 {
 895                                         syslog (LOG_ERR, "task_info failed: %s",
 896                                                         mach_error_string (status));
 897                                         continue; /* with next thread_list */
 898                                 }
 899
 900                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 901                                 status = task_info (task_list[task],
 902                                                 TASK_ABSOLUTETIME_INFO,
 903                                                 (task_info_t) &task_absolutetime_info,
 904                                                 &task_absolutetime_info_len);
 905                                 if (status != KERN_SUCCESS)
 906                                 {
 907                                         syslog (LOG_ERR, "task_info failed: %s",
 908                                                         mach_error_string (status));
 909                                         continue; /* with next thread_list */
 910                                 }
 911
 912                                 pse.num_proc++;
 913                                 pse.vmem_rss = task_basic_info.resident_size;
 914
 915                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 916                                 pse.vmem_majflt_counter = task_events_info.faults;
 917
 918                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 919                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 920                         }
 921
 922                         status = task_threads (task_list[task], &thread_list,
 923                                         &thread_list_len);
 924                         if (status != KERN_SUCCESS)
 925                         {
 926                                 /* Apple's `top' treats this case a zombie. It
 927                                  * makes sense to some extend: A `zombie'
 928                                  * thread is nonsense, since the task/process
 929                                  * is dead. */
 930                                 zombies++;
 931                                 DBG ("task_threads failed: %s",
 932                                                 mach_error_string (status));
 933                                 if (task_list[task] != port_task_self)
 934                                         mach_port_deallocate (port_task_self,
 935                                                         task_list[task]);
 936                                 continue; /* with next task_list */
 937                         }
 938
 939                         for (thread = 0; thread < thread_list_len; thread++)
 940                         {
 941                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 942                                 status = thread_info (thread_list[thread],
 943                                                 THREAD_BASIC_INFO,
 944                                                 (thread_info_t) &thread_data,
 945                                                 &thread_data_len);
 946                                 if (status != KERN_SUCCESS)
 947                                 {
 948                                         syslog (LOG_ERR, "thread_info failed: %s",
 949                                                         mach_error_string (status));
 950                                         if (task_list[task] != port_task_self)
 951                                                 mach_port_deallocate (port_task_self,
 952                                                                 thread_list[thread]);
 953                                         continue; /* with next thread_list */
 954                                 }
 955
 956                                 if (ps != NULL)
 957                                         pse.num_lwp++;
 958
 959                                 switch (thread_data.run_state)
 960                                 {
 961                                         case TH_STATE_RUNNING:
 962                                                 running++;
 963                                                 break;
 964                                         case TH_STATE_STOPPED:
 965                                         /* What exactly is `halted'? */
 966                                         case TH_STATE_HALTED:
 967                                                 stopped++;
 968                                                 break;
 969                                         case TH_STATE_WAITING:
 970                                                 sleeping++;
 971                                                 break;
 972                                         case TH_STATE_UNINTERRUPTIBLE:
 973                                                 blocked++;
 974                                                 break;
 975                                         /* There is no `zombie' case here,
 976                                          * since there are no zombie-threads.
 977                                          * There's only zombie tasks, which are
 978                                          * handled above. */
 979                                         default:
 980                                                 syslog (LOG_WARNING,
 981                                                                 "Unknown thread status: %s",
 982                                                                 thread_data.run_state);
 983                                                 break;
 984                                 } /* switch (thread_data.run_state) */
 985
 986                                 if (task_list[task] != port_task_self)
 987                                 {
 988                                         status = mach_port_deallocate (port_task_self,
 989                                                         thread_list[thread]);
 990                                         if (status != KERN_SUCCESS)
 991                                                 syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 992                                                                 mach_error_string (status));
 993                                 }
 994                         } /* for (thread_list) */
 995
 996                         if ((status = vm_deallocate (port_task_self,
 997                                                         (vm_address_t) thread_list,
 998                                                         thread_list_len * sizeof (thread_act_t)))
 999                                         != KERN_SUCCESS)
1000                         {
1001                                 syslog (LOG_ERR, "vm_deallocate failed: %s",
1002                                                 mach_error_string (status));
1003                         }
1004                         thread_list = NULL;
1005                         thread_list_len = 0;
1006
1007                         /* Only deallocate the task port, if it isn't our own.
1008                          * Don't know what would happen in that case, but this
1009                          * is what Apple's top does.. ;) */
1010                         if (task_list[task] != port_task_self)
1011                         {
1012                                 status = mach_port_deallocate (port_task_self,
1013                                                 task_list[task]);
1014                                 if (status != KERN_SUCCESS)
1015                                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
1016                                                         mach_error_string (status));
1017                         }
1018
1019                         if (ps != NULL)
1020                                 ps_list_add (task_name, &pse);
1021                 } /* for (task_list) */
1022
1023                 if ((status = vm_deallocate (port_task_self,
1024                                 (vm_address_t) task_list,
1025                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1026                 {
1027                         syslog (LOG_ERR, "vm_deallocate failed: %s",
1028                                         mach_error_string (status));
1029                 }
1030                 task_list = NULL;
1031                 task_list_len = 0;
1032
1033                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1034                                 != KERN_SUCCESS)
1035                 {
1036                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
1037                                         mach_error_string (status));
1038                 }
1039         } /* for (pset_list) */
1040
1041         ps_submit (running, sleeping, zombies, stopped, -1, blocked);
1042
1043         for (ps = list_head_g; ps != NULL; ps = ps->next)
1044                 ps_submit_proc_list (ps);
1045 /* #endif HAVE_THREAD_INFO */
1046
1047 #elif KERNEL_LINUX
1048         int running  = 0;
1049         int sleeping = 0;
1050         int zombies  = 0;
1051         int stopped  = 0;
1052         int paging   = 0;
1053         int blocked  = 0;
1054
1055         struct dirent *ent;
1056         DIR           *proc;
1057         int            pid;
1058
1059         int        status;
1060         procstat_t ps;
1061         procstat_entry_t pse;
1062         char       state;
1063
1064         procstat_t *ps_ptr;
1065
1066         running = sleeping = zombies = stopped = paging = blocked = 0;
1067         ps_list_reset ();
1068
1069         if ((proc = opendir ("/proc")) == NULL)
1070         {
1071                 syslog (LOG_ERR, "Cannot open `/proc': %s", strerror (errno));
1072                 return;
1073         }
1074
1075         while ((ent = readdir (proc)) != NULL)
1076         {
1077                 if (!isdigit (ent->d_name[0]))
1078                         continue;
1079
1080                 if ((pid = atoi (ent->d_name)) < 1)
1081                         continue;
1082
1083                 status = ps_read_process (pid, &ps, &state);
1084                 if (status != 0)
1085                 {
1086                         DBG ("ps_read_process failed: %i", status);
1087                         continue;
1088                 }
1089
1090                 pse.id       = pid;
1091                 pse.age      = 0;
1092
1093                 pse.num_proc = ps.num_proc;
1094                 pse.num_lwp  = ps.num_lwp;
1095                 pse.vmem_rss = ps.vmem_rss;
1096
1097                 pse.vmem_minflt = 0;
1098                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1099                 pse.vmem_majflt = 0;
1100                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1101
1102                 pse.cpu_user = 0;
1103                 pse.cpu_user_counter = ps.cpu_user_counter;
1104                 pse.cpu_system = 0;
1105                 pse.cpu_system_counter = ps.cpu_system_counter;
1106
1107                 switch (state)
1108                 {
1109                         case 'R': running++;  break;
1110                         case 'S': sleeping++; break;
1111                         case 'D': blocked++;  break;
1112                         case 'Z': zombies++;  break;
1113                         case 'T': stopped++;  break;
1114                         case 'W': paging++;   break;
1115                 }
1116
1117                 ps_list_add (ps.name, &pse);
1118         }
1119
1120         closedir (proc);
1121
1122         ps_submit (running, sleeping, zombies, stopped, paging, blocked);
1123
1124         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1125                 ps_submit_proc_list (ps_ptr);
1126 #endif /* KERNEL_LINUX */
1127 }
1128 #else
1129 # define ps_read NULL
1130 #endif /* PROCESSES_HAVE_READ */
1131
1132 void module_register (void)
1133 {
1134         plugin_register (MODULE_NAME, ps_init, ps_read, ps_write);
1135         plugin_register ("ps_rss", NULL, NULL, ps_rss_write);
1136         plugin_register ("ps_cputime", NULL, NULL, ps_cputime_write);
1137         plugin_register ("ps_count", NULL, NULL, ps_count_write);
1138         plugin_register ("ps_pagefaults", NULL, NULL, ps_pagefaults_write);
1139         cf_register (MODULE_NAME, ps_config, config_keys, config_keys_num);
1140 }
1141
1142 #undef BUFSIZE
1143 #undef MODULE_NAME