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 #elif HAVE_KVM_H
  86 #  include <kvm.h>
  87 #  include <sys/user.h>
  88 #  include <sys/proc.h>
  89 #  if HAVE_SYS_SYSCTL_H
  90 #    include <sys/sysctl.h>
  91 #  endif
  92 /* #endif HAVE_KVM_H */
  93
  94 #else
  95 # error "No applicable input method."
  96 #endif
  97
  98 #if HAVE_REGEX_H
  99 # include <regex.h>
 100 #endif
 101
 102 #define BUFSIZE 256
 103
 104 static const char *config_keys[] =
 105 {
 106         "Process",
 107         "ProcessMatch",
 108         NULL
 109 };
 110 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 111
 112 typedef struct procstat_entry_s
 113 {
 114         unsigned long id;
 115         unsigned long age;
 116
 117         unsigned long num_proc;
 118         unsigned long num_lwp;
 119         unsigned long vmem_rss;
 120
 121         unsigned long vmem_minflt;
 122         unsigned long vmem_majflt;
 123         unsigned long vmem_minflt_counter;
 124         unsigned long vmem_majflt_counter;
 125
 126         unsigned long cpu_user;
 127         unsigned long cpu_system;
 128         unsigned long cpu_user_counter;
 129         unsigned long cpu_system_counter;
 130
 131         struct procstat_entry_s *next;
 132 } procstat_entry_t;
 133
 134 #define PROCSTAT_NAME_LEN 256
 135 typedef struct procstat
 136 {
 137         char          name[PROCSTAT_NAME_LEN];
 138 #if HAVE_REGEX_H
 139         regex_t *re;
 140 #endif
 141
 142         unsigned long num_proc;
 143         unsigned long num_lwp;
 144         unsigned long vmem_rss;
 145
 146         unsigned long vmem_minflt_counter;
 147         unsigned long vmem_majflt_counter;
 148
 149         unsigned long cpu_user_counter;
 150         unsigned long cpu_system_counter;
 151
 152         struct procstat   *next;
 153         struct procstat_entry_s *instances;
 154 } procstat_t;
 155
 156 static procstat_t *list_head_g = NULL;
 157
 158 #if HAVE_THREAD_INFO
 159 static mach_port_t port_host_self;
 160 static mach_port_t port_task_self;
 161
 162 static processor_set_name_array_t pset_list;
 163 static mach_msg_type_number_t     pset_list_len;
 164 /* #endif HAVE_THREAD_INFO */
 165
 166 #elif KERNEL_LINUX
 167 static long pagesize_g;
 168 #endif /* KERNEL_LINUX */
 169
 170 /* put name of process from config to list_head_g tree
 171    list_head_g is a list of 'procstat_t' structs with
 172    processes names we want to watch */
 173 static void ps_list_register (const char *name, const char *regexp)
 174 {
 175         procstat_t *new;
 176         procstat_t *ptr;
 177
 178         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 179                 return;
 180         memset (new, 0, sizeof (procstat_t));
 181         sstrncpy (new->name, name, sizeof (new->name));
 182
 183         if (regexp != NULL)
 184         {
 185 #if HAVE_REGEX_H
 186                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 187                 if ((new->re = (regex_t *) malloc (sizeof (regex_t))) != NULL)
 188                 {
 189                         if (regcomp(new->re, regexp, REG_EXTENDED|REG_NOSUB) != 0)
 190                         {
 191                                 DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 192                                 sfree(new->re);
 193                         }
 194                 } else {
 195                         DEBUG("ProcessMatch: malloc failed when allocating memory for regexp!");
 196                 }
 197 #else
 198                 DEBUG("ProcessMatch: regexp '%s' met in config file, but regexps are not supported!", regexp);
 199 #endif
 200         }
 201
 202         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 203         {
 204                 if (strcmp (ptr->name, name) == 0)
 205                         return;
 206                 if (ptr->next == NULL)
 207                         break;
 208         }
 209
 210         if (ptr == NULL)
 211                 list_head_g = new;
 212         else
 213                 ptr->next = new;
 214 }
 215
 216 /* try to match name against entry, returns 1 if success */
 217 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 218 {
 219         if ((ps->re != NULL) && (regexec(ps->re, (strlen(cmdline)!=0)?cmdline:name, 0, NULL, 0) == 0))
 220                 return (1);
 221         if (strcmp (ps->name, name) == 0) {
 222                 return (1);
 223         }
 224         return (0);
 225 }
 226
 227 /* add process entry to 'instances' of process 'name' (or refresh it) */
 228 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 229 {
 230         procstat_t *ps;
 231         procstat_entry_t *pse;
 232
 233         if (entry->id == 0)
 234                 return;
 235
 236         for (ps = list_head_g; ps != NULL; ps = ps->next)
 237         {
 238
 239                 if ((ps_list_match (name, cmdline, ps)) == 0)
 240                         continue;
 241
 242                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 243                         if ((pse->id == entry->id) || (pse->next == NULL))
 244                                 break;
 245
 246                 if ((pse == NULL) || (pse->id != entry->id))
 247                 {
 248                         procstat_entry_t *new;
 249
 250                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 251                         if (new == NULL)
 252                                 return;
 253                         memset (new, 0, sizeof (procstat_entry_t));
 254                         new->id = entry->id;
 255
 256                         if (pse == NULL)
 257                                 ps->instances = new;
 258                         else
 259                                 pse->next = new;
 260
 261                         pse = new;
 262                 }
 263
 264                 pse->age = 0;
 265                 pse->num_proc = entry->num_proc;
 266                 pse->num_lwp  = entry->num_lwp;
 267                 pse->vmem_rss = entry->vmem_rss;
 268
 269                 ps->num_proc += pse->num_proc;
 270                 ps->num_lwp  += pse->num_lwp;
 271                 ps->vmem_rss += pse->vmem_rss;
 272
 273                 if ((entry->vmem_minflt_counter == 0)
 274                                 && (entry->vmem_majflt_counter == 0))
 275                 {
 276                         pse->vmem_minflt_counter += entry->vmem_minflt;
 277                         pse->vmem_minflt = entry->vmem_minflt;
 278
 279                         pse->vmem_majflt_counter += entry->vmem_majflt;
 280                         pse->vmem_majflt = entry->vmem_majflt;
 281                 }
 282                 else
 283                 {
 284                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 285                         {
 286                                 pse->vmem_minflt = entry->vmem_minflt_counter
 287                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 288                         }
 289                         else
 290                         {
 291                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 292                         }
 293                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 294
 295                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 296                         {
 297                                 pse->vmem_majflt = entry->vmem_majflt_counter
 298                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 299                         }
 300                         else
 301                         {
 302                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 303                         }
 304                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 305                 }
 306
 307                 ps->vmem_minflt_counter += pse->vmem_minflt;
 308                 ps->vmem_majflt_counter += pse->vmem_majflt;
 309
 310                 if ((entry->cpu_user_counter == 0)
 311                                 && (entry->cpu_system_counter == 0))
 312                 {
 313                         pse->cpu_user_counter += entry->cpu_user;
 314                         pse->cpu_user = entry->cpu_user;
 315
 316                         pse->cpu_system_counter += entry->cpu_system;
 317                         pse->cpu_system = entry->cpu_system;
 318                 }
 319                 else
 320                 {
 321                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 322                         {
 323                                 pse->cpu_user = entry->cpu_user_counter
 324                                         + (ULONG_MAX - pse->cpu_user_counter);
 325                         }
 326                         else
 327                         {
 328                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 329                         }
 330                         pse->cpu_user_counter = entry->cpu_user_counter;
 331
 332                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 333                         {
 334                                 pse->cpu_system = entry->cpu_system_counter
 335                                         + (ULONG_MAX - pse->cpu_system_counter);
 336                         }
 337                         else
 338                         {
 339                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 340                         }
 341                         pse->cpu_system_counter = entry->cpu_system_counter;
 342                 }
 343
 344                 ps->cpu_user_counter   += pse->cpu_user;
 345                 ps->cpu_system_counter += pse->cpu_system;
 346         }
 347 }
 348
 349 /* remove old entries from instances of processes in list_head_g */
 350 static void ps_list_reset (void)
 351 {
 352         procstat_t *ps;
 353         procstat_entry_t *pse;
 354         procstat_entry_t *pse_prev;
 355
 356         for (ps = list_head_g; ps != NULL; ps = ps->next)
 357         {
 358                 ps->num_proc    = 0;
 359                 ps->num_lwp     = 0;
 360                 ps->vmem_rss    = 0;
 361
 362                 pse_prev = NULL;
 363                 pse = ps->instances;
 364                 while (pse != NULL)
 365                 {
 366                         if (pse->age > 10)
 367                         {
 368                                 DEBUG ("Removing this procstat entry cause it's too old: "
 369                                                 "id = %lu; name = %s;",
 370                                                 pse->id, ps->name);
 371
 372                                 if (pse_prev == NULL)
 373                                 {
 374                                         ps->instances = pse->next;
 375                                         free (pse);
 376                                         pse = ps->instances;
 377                                 }
 378                                 else
 379                                 {
 380                                         pse_prev->next = pse->next;
 381                                         free (pse);
 382                                         pse = pse_prev->next;
 383                                 }
 384                         }
 385                         else
 386                         {
 387                                 pse->age++;
 388                                 pse_prev = pse;
 389                                 pse = pse->next;
 390                         }
 391                 } /* while (pse != NULL) */
 392         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 393 }
 394
 395 /* put all pre-defined 'Process' names from config to list_head_g tree */
 396 static int ps_config (const char *key, const char *value)
 397 {
 398         char *new_val;
 399         char *fields[2];
 400         int fields_num;
 401
 402         if (strcasecmp (key, "Process") == 0)
 403         {
 404                 ps_list_register (value, NULL);
 405                 return (0);
 406         }
 407
 408         if (strcasecmp (key, "ProcessMatch") == 0)
 409         {
 410                 new_val = strdup (value);
 411                 if (new_val == NULL)
 412                         return (-1);
 413                 fields_num = strsplit (new_val, fields, 2);
 414                 if (fields_num != 2)
 415                 {
 416                         sfree (new_val);
 417                         return (-1);
 418                 }
 419                 ps_list_register (fields[0], fields[1]);
 420                 sfree (new_val);
 421                 return (0);
 422         }
 423
 424         return (-1);
 425 }
 426
 427 static int ps_init (void)
 428 {
 429 #if HAVE_THREAD_INFO
 430         kern_return_t status;
 431
 432         port_host_self = mach_host_self ();
 433         port_task_self = mach_task_self ();
 434
 435         if (pset_list != NULL)
 436         {
 437                 vm_deallocate (port_task_self,
 438                                 (vm_address_t) pset_list,
 439                                 pset_list_len * sizeof (processor_set_t));
 440                 pset_list = NULL;
 441                 pset_list_len = 0;
 442         }
 443
 444         if ((status = host_processor_sets (port_host_self,
 445                                         &pset_list,
 446                                         &pset_list_len)) != KERN_SUCCESS)
 447         {
 448                 ERROR ("host_processor_sets failed: %s\n",
 449                                 mach_error_string (status));
 450                 pset_list = NULL;
 451                 pset_list_len = 0;
 452                 return (-1);
 453         }
 454 /* #endif HAVE_THREAD_INFO */
 455
 456 #elif KERNEL_LINUX
 457         pagesize_g = sysconf(_SC_PAGESIZE);
 458         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 459                         pagesize_g, CONFIG_HZ);
 460 #endif /* KERNEL_LINUX */
 461
 462         return (0);
 463 } /* int ps_init */
 464
 465 /* submit global state (e.g.: qty of zombies, running, etc..) */
 466 static void ps_submit_state (const char *state, double value)
 467 {
 468         value_t values[1];
 469         value_list_t vl = VALUE_LIST_INIT;
 470
 471         values[0].gauge = value;
 472
 473         vl.values = values;
 474         vl.values_len = 1;
 475         vl.time = time (NULL);
 476         strcpy (vl.host, hostname_g);
 477         strcpy (vl.plugin, "processes");
 478         strcpy (vl.plugin_instance, "");
 479         strcpy (vl.type, "ps_state");
 480         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 481
 482         plugin_dispatch_values (&vl);
 483 }
 484
 485 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 486 static void ps_submit_proc_list (procstat_t *ps)
 487 {
 488         value_t values[2];
 489         value_list_t vl = VALUE_LIST_INIT;
 490
 491         vl.values = values;
 492         vl.values_len = 2;
 493         vl.time = time (NULL);
 494         strcpy (vl.host, hostname_g);
 495         strcpy (vl.plugin, "processes");
 496         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 497
 498         strcpy (vl.type, "ps_rss");
 499         vl.values[0].gauge = ps->vmem_rss;
 500         vl.values_len = 1;
 501         plugin_dispatch_values (&vl);
 502
 503         strcpy (vl.type, "ps_cputime");
 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 (&vl);
 508
 509         strcpy (vl.type, "ps_count");
 510         vl.values[0].gauge = ps->num_proc;
 511         vl.values[1].gauge = ps->num_lwp;
 512         vl.values_len = 2;
 513         plugin_dispatch_values (&vl);
 514
 515         strcpy (vl.type, "ps_pagefaults");
 516         vl.values[0].counter = ps->vmem_minflt_counter;
 517         vl.values[1].counter = ps->vmem_majflt_counter;
 518         vl.values_len = 2;
 519         plugin_dispatch_values (&vl);
 520
 521         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 522                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 523                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 524                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 525                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 526                         ps->cpu_user_counter, ps->cpu_system_counter);
 527 } /* void ps_submit_proc_list */
 528
 529 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 530 #if KERNEL_LINUX
 531 static int *ps_read_tasks (int pid)
 532 {
 533         int *list = NULL;
 534         int  list_size = 1; /* size of allocated space, in elements */
 535         int  list_len = 0;  /* number of currently used elements */
 536
 537         char           dirname[64];
 538         DIR           *dh;
 539         struct dirent *ent;
 540
 541         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 542
 543         if ((dh = opendir (dirname)) == NULL)
 544         {
 545                 DEBUG ("Failed to open directory `%s'", dirname);
 546                 return (NULL);
 547         }
 548
 549         while ((ent = readdir (dh)) != NULL)
 550         {
 551                 if (!isdigit (ent->d_name[0]))
 552                         continue;
 553
 554                 if ((list_len + 1) >= list_size)
 555                 {
 556                         int *new_ptr;
 557                         int  new_size = 2 * list_size;
 558                         /* Comes in sizes: 2, 4, 8, 16, ... */
 559
 560                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 561                         if (new_ptr == NULL)
 562                         {
 563                                 if (list != NULL)
 564                                         free (list);
 565                                 ERROR ("processes plugin: "
 566                                                 "Failed to allocate more memory.");
 567                                 return (NULL);
 568                         }
 569
 570                         list = new_ptr;
 571                         list_size = new_size;
 572
 573                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 574                 }
 575
 576                 list[list_len] = atoi (ent->d_name);
 577                 if (list[list_len] != 0)
 578                         list_len++;
 579         }
 580
 581         closedir (dh);
 582
 583         if (list_len == 0)
 584                 return (NULL);
 585
 586         assert (list_len < list_size);
 587         assert (list[list_len] == 0);
 588
 589         return (list);
 590 } /* int *ps_read_tasks */
 591
 592 int ps_read_process (int pid, procstat_t *ps, char *state)
 593 {
 594         char  filename[64];
 595         char  buffer[1024];
 596         FILE *fh;
 597
 598         char *fields[64];
 599         char  fields_len;
 600
 601         int  *tasks;
 602         int   i;
 603
 604         int   ppid;
 605         int   name_len;
 606
 607         long long unsigned cpu_user_counter;
 608         long long unsigned cpu_system_counter;
 609         long long unsigned vmem_rss;
 610
 611         memset (ps, 0, sizeof (procstat_t));
 612
 613         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 614
 615         if ((fh = fopen (filename, "r")) == NULL)
 616                 return (-1);
 617
 618         if (fgets (buffer, 1024, fh) == NULL)
 619         {
 620                 fclose (fh);
 621                 return (-1);
 622         }
 623
 624         fclose (fh);
 625
 626         fields_len = strsplit (buffer, fields, 64);
 627         if (fields_len < 24)
 628         {
 629                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 630                                 " `%s' has only %i fields..",
 631                                 (int) pid, filename, fields_len);
 632                 return (-1);
 633         }
 634
 635         /* copy the name, strip brackets in the process */
 636         name_len = strlen (fields[1]) - 2;
 637         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 638         {
 639                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 640                 return (-1);
 641         }
 642         fields[1] = fields[1] + 1;
 643         fields[1][name_len] = '\0';
 644         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 645
 646         ppid = atoi (fields[3]);
 647
 648         *state = fields[2][0];
 649
 650         if (*state == 'Z')
 651         {
 652                 ps->num_lwp  = 0;
 653                 ps->num_proc = 0;
 654         }
 655         else if ((tasks = ps_read_tasks (pid)) == NULL)
 656         {
 657                 /* Kernel 2.4 or so */
 658                 ps->num_lwp  = 1;
 659                 ps->num_proc = 1;
 660         }
 661         else
 662         {
 663                 ps->num_lwp  = 0;
 664                 ps->num_proc = 1;
 665                 for (i = 0; tasks[i] != 0; i++)
 666                         ps->num_lwp++;
 667
 668                 free (tasks);
 669                 tasks = NULL;
 670         }
 671
 672         /* Leave the rest at zero if this is only a zombi */
 673         if (ps->num_proc == 0)
 674         {
 675                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 676                                 "name = %s;", pid, ps->name);
 677                 return (0);
 678         }
 679
 680         cpu_user_counter   = atoll (fields[13]);
 681         cpu_system_counter = atoll (fields[14]);
 682         vmem_rss = atoll (fields[23]);
 683         ps->vmem_minflt_counter = atol (fields[9]);
 684         ps->vmem_majflt_counter = atol (fields[11]);
 685
 686         /* Convert jiffies to useconds */
 687         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 688         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 689         vmem_rss = vmem_rss * pagesize_g;
 690
 691         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 692         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 693         ps->vmem_rss = (unsigned long) vmem_rss;
 694
 695         /* success */
 696         return (0);
 697 } /* int ps_read_process (...) */
 698 #endif /* KERNEL_LINUX */
 699
 700 #if HAVE_THREAD_INFO
 701 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 702 {
 703         int mib[4];
 704
 705         struct kinfo_proc kp;
 706         size_t            kp_size;
 707
 708         mib[0] = CTL_KERN;
 709         mib[1] = KERN_PROC;
 710         mib[2] = KERN_PROC_PID;
 711
 712         if (pid_for_task (t, pid) != KERN_SUCCESS)
 713                 return (-1);
 714         mib[3] = *pid;
 715
 716         kp_size = sizeof (kp);
 717         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 718                 return (-1);
 719
 720         if (name_max_len > (MAXCOMLEN + 1))
 721                 name_max_len = MAXCOMLEN + 1;
 722
 723         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 724         name[name_max_len - 1] = '\0';
 725
 726         DEBUG ("pid = %i; name = %s;", *pid, name);
 727
 728         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 729          * `top' does it, because it is a lot of work and only used when
 730          * debugging. -octo */
 731
 732         return (0);
 733 }
 734 #endif /* HAVE_THREAD_INFO */
 735 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 736
 737 /* do actual readings from kernel */
 738 static int ps_read (void)
 739 {
 740 #if HAVE_THREAD_INFO
 741         kern_return_t            status;
 742
 743         int                      pset;
 744         processor_set_t          port_pset_priv;
 745
 746         int                      task;
 747         task_array_t             task_list;
 748         mach_msg_type_number_t   task_list_len;
 749
 750         int                      task_pid;
 751         char                     task_name[MAXCOMLEN + 1];
 752
 753         int                      thread;
 754         thread_act_array_t       thread_list;
 755         mach_msg_type_number_t   thread_list_len;
 756         thread_basic_info_data_t thread_data;
 757         mach_msg_type_number_t   thread_data_len;
 758
 759         int running  = 0;
 760         int sleeping = 0;
 761         int zombies  = 0;
 762         int stopped  = 0;
 763         int blocked  = 0;
 764
 765         procstat_t *ps;
 766         procstat_entry_t pse;
 767
 768         ps_list_reset ();
 769
 770         /*
 771          * The Mach-concept is a little different from the traditional UNIX
 772          * concept: All the work is done in threads. Threads are contained in
 773          * `tasks'. Therefore, `task status' doesn't make much sense, since
 774          * it's actually a `thread status'.
 775          * Tasks are assigned to sets of processors, so that's where you go to
 776          * get a list.
 777          */
 778         for (pset = 0; pset < pset_list_len; pset++)
 779         {
 780                 if ((status = host_processor_set_priv (port_host_self,
 781                                                 pset_list[pset],
 782                                                 &port_pset_priv)) != KERN_SUCCESS)
 783                 {
 784                         ERROR ("host_processor_set_priv failed: %s\n",
 785                                         mach_error_string (status));
 786                         continue;
 787                 }
 788
 789                 if ((status = processor_set_tasks (port_pset_priv,
 790                                                 &task_list,
 791                                                 &task_list_len)) != KERN_SUCCESS)
 792                 {
 793                         ERROR ("processor_set_tasks failed: %s\n",
 794                                         mach_error_string (status));
 795                         mach_port_deallocate (port_task_self, port_pset_priv);
 796                         continue;
 797                 }
 798
 799                 for (task = 0; task < task_list_len; task++)
 800                 {
 801                         ps = NULL;
 802                         if (mach_get_task_name (task_list[task],
 803                                                 &task_pid,
 804                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 805                         {
 806                                 /* search for at least one match */
 807                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
 808                                         if (ps_list_match(task_name, NULL, ps) == 1) //!!! cmdline should be here instead of NULL
 809                                                 break;
 810                         }
 811
 812                         /* Collect more detailed statistics for this process */
 813                         if (ps != NULL)
 814                         {
 815                                 task_basic_info_data_t        task_basic_info;
 816                                 mach_msg_type_number_t        task_basic_info_len;
 817                                 task_events_info_data_t       task_events_info;
 818                                 mach_msg_type_number_t        task_events_info_len;
 819                                 task_absolutetime_info_data_t task_absolutetime_info;
 820                                 mach_msg_type_number_t        task_absolutetime_info_len;
 821
 822                                 memset (&pse, '\0', sizeof (pse));
 823                                 pse.id = task_pid;
 824
 825                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 826                                 status = task_info (task_list[task],
 827                                                 TASK_BASIC_INFO,
 828                                                 (task_info_t) &task_basic_info,
 829                                                 &task_basic_info_len);
 830                                 if (status != KERN_SUCCESS)
 831                                 {
 832                                         ERROR ("task_info failed: %s",
 833                                                         mach_error_string (status));
 834                                         continue; /* with next thread_list */
 835                                 }
 836
 837                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 838                                 status = task_info (task_list[task],
 839                                                 TASK_EVENTS_INFO,
 840                                                 (task_info_t) &task_events_info,
 841                                                 &task_events_info_len);
 842                                 if (status != KERN_SUCCESS)
 843                                 {
 844                                         ERROR ("task_info failed: %s",
 845                                                         mach_error_string (status));
 846                                         continue; /* with next thread_list */
 847                                 }
 848
 849                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 850                                 status = task_info (task_list[task],
 851                                                 TASK_ABSOLUTETIME_INFO,
 852                                                 (task_info_t) &task_absolutetime_info,
 853                                                 &task_absolutetime_info_len);
 854                                 if (status != KERN_SUCCESS)
 855                                 {
 856                                         ERROR ("task_info failed: %s",
 857                                                         mach_error_string (status));
 858                                         continue; /* with next thread_list */
 859                                 }
 860
 861                                 pse.num_proc++;
 862                                 pse.vmem_rss = task_basic_info.resident_size;
 863
 864                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 865                                 pse.vmem_majflt_counter = task_events_info.faults;
 866
 867                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 868                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 869                         }
 870
 871                         status = task_threads (task_list[task], &thread_list,
 872                                         &thread_list_len);
 873                         if (status != KERN_SUCCESS)
 874                         {
 875                                 /* Apple's `top' treats this case a zombie. It
 876                                  * makes sense to some extend: A `zombie'
 877                                  * thread is nonsense, since the task/process
 878                                  * is dead. */
 879                                 zombies++;
 880                                 DEBUG ("task_threads failed: %s",
 881                                                 mach_error_string (status));
 882                                 if (task_list[task] != port_task_self)
 883                                         mach_port_deallocate (port_task_self,
 884                                                         task_list[task]);
 885                                 continue; /* with next task_list */
 886                         }
 887
 888                         for (thread = 0; thread < thread_list_len; thread++)
 889                         {
 890                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 891                                 status = thread_info (thread_list[thread],
 892                                                 THREAD_BASIC_INFO,
 893                                                 (thread_info_t) &thread_data,
 894                                                 &thread_data_len);
 895                                 if (status != KERN_SUCCESS)
 896                                 {
 897                                         ERROR ("thread_info failed: %s",
 898                                                         mach_error_string (status));
 899                                         if (task_list[task] != port_task_self)
 900                                                 mach_port_deallocate (port_task_self,
 901                                                                 thread_list[thread]);
 902                                         continue; /* with next thread_list */
 903                                 }
 904
 905                                 if (ps != NULL)
 906                                         pse.num_lwp++;
 907
 908                                 switch (thread_data.run_state)
 909                                 {
 910                                         case TH_STATE_RUNNING:
 911                                                 running++;
 912                                                 break;
 913                                         case TH_STATE_STOPPED:
 914                                         /* What exactly is `halted'? */
 915                                         case TH_STATE_HALTED:
 916                                                 stopped++;
 917                                                 break;
 918                                         case TH_STATE_WAITING:
 919                                                 sleeping++;
 920                                                 break;
 921                                         case TH_STATE_UNINTERRUPTIBLE:
 922                                                 blocked++;
 923                                                 break;
 924                                         /* There is no `zombie' case here,
 925                                          * since there are no zombie-threads.
 926                                          * There's only zombie tasks, which are
 927                                          * handled above. */
 928                                         default:
 929                                                 WARNING ("Unknown thread status: %s",
 930                                                                 thread_data.run_state);
 931                                                 break;
 932                                 } /* switch (thread_data.run_state) */
 933
 934                                 if (task_list[task] != port_task_self)
 935                                 {
 936                                         status = mach_port_deallocate (port_task_self,
 937                                                         thread_list[thread]);
 938                                         if (status != KERN_SUCCESS)
 939                                                 ERROR ("mach_port_deallocate failed: %s",
 940                                                                 mach_error_string (status));
 941                                 }
 942                         } /* for (thread_list) */
 943
 944                         if ((status = vm_deallocate (port_task_self,
 945                                                         (vm_address_t) thread_list,
 946                                                         thread_list_len * sizeof (thread_act_t)))
 947                                         != KERN_SUCCESS)
 948                         {
 949                                 ERROR ("vm_deallocate failed: %s",
 950                                                 mach_error_string (status));
 951                         }
 952                         thread_list = NULL;
 953                         thread_list_len = 0;
 954
 955                         /* Only deallocate the task port, if it isn't our own.
 956                          * Don't know what would happen in that case, but this
 957                          * is what Apple's top does.. ;) */
 958                         if (task_list[task] != port_task_self)
 959                         {
 960                                 status = mach_port_deallocate (port_task_self,
 961                                                 task_list[task]);
 962                                 if (status != KERN_SUCCESS)
 963                                         ERROR ("mach_port_deallocate failed: %s",
 964                                                         mach_error_string (status));
 965                         }
 966
 967                         if (ps != NULL)
 968                                 ps_list_add (task_name, NULL, &pse); //!!! cmdline should be here instead of NULL
 969                 } /* for (task_list) */
 970
 971                 if ((status = vm_deallocate (port_task_self,
 972                                 (vm_address_t) task_list,
 973                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 974                 {
 975                         ERROR ("vm_deallocate failed: %s",
 976                                         mach_error_string (status));
 977                 }
 978                 task_list = NULL;
 979                 task_list_len = 0;
 980
 981                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 982                                 != KERN_SUCCESS)
 983                 {
 984                         ERROR ("mach_port_deallocate failed: %s",
 985                                         mach_error_string (status));
 986                 }
 987         } /* for (pset_list) */
 988
 989         ps_submit_state ("running", running);
 990         ps_submit_state ("sleeping", sleeping);
 991         ps_submit_state ("zombies", zombies);
 992         ps_submit_state ("stopped", stopped);
 993         ps_submit_state ("blocked", blocked);
 994
 995         for (ps = list_head_g; ps != NULL; ps = ps->next)
 996                 ps_submit_proc_list (ps);
 997 /* #endif HAVE_THREAD_INFO */
 998
 999 #elif KERNEL_LINUX
1000         int running  = 0;
1001         int sleeping = 0;
1002         int zombies  = 0;
1003         int stopped  = 0;
1004         int paging   = 0;
1005         int blocked  = 0;
1006
1007         struct dirent *ent;
1008         DIR           *proc;
1009         int            pid;
1010
1011         int        status;
1012         procstat_t ps;
1013         procstat_entry_t pse;
1014         char       state;
1015
1016         procstat_t *ps_ptr;
1017
1018         running = sleeping = zombies = stopped = paging = blocked = 0;
1019         ps_list_reset ();
1020
1021         if ((proc = opendir ("/proc")) == NULL)
1022         {
1023                 char errbuf[1024];
1024                 ERROR ("Cannot open `/proc': %s",
1025                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1026                 return (-1);
1027         }
1028
1029         while ((ent = readdir (proc)) != NULL)
1030         {
1031                 if (!isdigit (ent->d_name[0]))
1032                         continue;
1033
1034                 if ((pid = atoi (ent->d_name)) < 1)
1035                         continue;
1036
1037                 status = ps_read_process (pid, &ps, &state);
1038                 if (status != 0)
1039                 {
1040                         DEBUG ("ps_read_process failed: %i", status);
1041                         continue;
1042                 }
1043
1044                 pse.id       = pid;
1045                 pse.age      = 0;
1046
1047                 pse.num_proc = ps.num_proc;
1048                 pse.num_lwp  = ps.num_lwp;
1049                 pse.vmem_rss = ps.vmem_rss;
1050
1051                 pse.vmem_minflt = 0;
1052                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1053                 pse.vmem_majflt = 0;
1054                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1055
1056                 pse.cpu_user = 0;
1057                 pse.cpu_user_counter = ps.cpu_user_counter;
1058                 pse.cpu_system = 0;
1059                 pse.cpu_system_counter = ps.cpu_system_counter;
1060
1061                 switch (state)
1062                 {
1063                         case 'R': running++;  break;
1064                         case 'S': sleeping++; break;
1065                         case 'D': blocked++;  break;
1066                         case 'Z': zombies++;  break;
1067                         case 'T': stopped++;  break;
1068                         case 'W': paging++;   break;
1069                 }
1070
1071                 ps_list_add (ps.name, NULL, &pse); //!!! cmdline should be here instead of NULL
1072         }
1073
1074         closedir (proc);
1075
1076         ps_submit_state ("running",  running);
1077         ps_submit_state ("sleeping", sleeping);
1078         ps_submit_state ("zombies",  zombies);
1079         ps_submit_state ("stopped",  stopped);
1080         ps_submit_state ("paging",   paging);
1081         ps_submit_state ("blocked",  blocked);
1082
1083         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1084                 ps_submit_proc_list (ps_ptr);
1085 /* #endif KERNEL_LINUX */
1086
1087 #elif HAVE_LIBKVM
1088         int running  = 0;
1089         int sleeping = 0;
1090         int zombies  = 0;
1091         int stopped  = 0;
1092         int blocked  = 0;
1093         int idle     = 0;
1094         int wait     = 0;
1095
1096         kvm_t *kd;
1097         char errbuf[1024];
1098         char cmdline[ARG_MAX];
1099         struct kinfo_proc *procs;          /* array of processes */
1100         char ** argv;
1101         int count;                         /* returns number of processes */
1102         int i, j;
1103
1104         procstat_t *ps_ptr;
1105         procstat_entry_t pse;
1106
1107         ps_list_reset ();
1108
1109         /* Open the kvm interface, get a descriptor */
1110         if ((kd = kvm_open(NULL, NULL, NULL, 0, errbuf)) == NULL) {
1111                 ERROR ("Cannot open kvm interface: %s", errbuf);
1112                 return (0);
1113         }
1114
1115         /* Get the list of processes. */
1116         if ((procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count)) == NULL) {
1117                 kvm_close(kd);
1118                 ERROR ("Cannot get kvm processes list: %s", kvm_geterr(kd));
1119                 return (0);
1120         }
1121
1122         /* Iterate through the processes in kinfo_proc */
1123         for (i=0; i < count; i++) {
1124                 // retrieve the arguments
1125                 *cmdline = '\0';
1126                 argv = kvm_getargv(kd, (const struct kinfo_proc *) &(procs[i]), 0);
1127                 if (argv) {
1128                         j = 0;
1129                         while (argv[j] && strlen(cmdline) <= ARG_MAX) {
1130                                 if (j)
1131                                         strncat(cmdline, " ", 1);
1132                                 strncat(cmdline, argv[j], strlen(argv[j]));
1133                                 j++;
1134                         }
1135                 }
1136
1137                 pse.id       = procs[i].ki_pid;
1138                 pse.age      = 0;
1139
1140                 pse.num_proc = 1;
1141                 pse.num_lwp  = procs[i].ki_numthreads;
1142
1143                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1144                 pse.vmem_minflt = 0;
1145                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1146                 pse.vmem_majflt = 0;
1147                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1148
1149                 pse.cpu_user = 0;
1150                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec*1000 + procs[i].ki_rusage.ru_utime.tv_usec;
1151                 pse.cpu_system = 0;
1152                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec*1000 + procs[i].ki_rusage.ru_stime.tv_usec;
1153
1154                 switch (procs[i].ki_stat) {
1155                         case SSTOP:     stopped++;      break;
1156                         case SSLEEP:    sleeping++;     break;
1157                         case SRUN:      running++;      break;
1158                         case SIDL:      idle++;         break;
1159                         case SWAIT:     wait++;         break;
1160                         case SLOCK:     blocked++;      break;
1161                         case SZOMB:     zombies++;      break;
1162                 }
1163
1164                 ps_list_add (procs[i].ki_comm, cmdline, &pse);
1165         }
1166
1167         if (kd) kvm_close(kd);
1168
1169         ps_submit_state ("running",  running);
1170         ps_submit_state ("sleeping", sleeping);
1171         ps_submit_state ("zombies",  zombies);
1172         ps_submit_state ("stopped",  stopped);
1173         ps_submit_state ("blocked",  blocked);
1174         ps_submit_state ("idle",     idle);
1175         ps_submit_state ("wait",     wait);
1176
1177         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1178                 ps_submit_proc_list (ps_ptr);
1179
1180 #endif /* HAVE_LIBKVM */
1181
1182         return (0);
1183 } /* int ps_read */
1184
1185 void module_register (void)
1186 {
1187         plugin_register_config ("processes", ps_config,
1188                         config_keys, config_keys_num);
1189         plugin_register_init ("processes", ps_init);
1190         plugin_register_read ("processes", ps_read);
1191 } /* void module_register */