src/apps_plugin.c

   1 // TODO
   2 //
   3 // 1. disable RESET_OR_OVERFLOW check in charts
   4
   5 #ifdef HAVE_CONFIG_H
   6 #include <config.h>
   7 #endif
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <time.h>
  12 #include <unistd.h>
  13 #include <sys/types.h>
  14 #include <sys/time.h>
  15 #include <sys/wait.h>
  16
  17 #include <sys/resource.h>
  18 #include <sys/stat.h>
  19
  20 #include <errno.h>
  21 #include <stdarg.h>
  22 #include <locale.h>
  23 #include <ctype.h>
  24 #include <fcntl.h>
  25
  26 #include <malloc.h>
  27 #include <dirent.h>
  28 #include <arpa/inet.h>
  29
  30 #include "common.h"
  31 #include "log.h"
  32 #include "avl.h"
  33 #include "procfile.h"
  34
  35 #define MAX_COMPARE_NAME 15
  36 #define MAX_NAME 100
  37
  38 unsigned long long Hertz = 1;
  39
  40 long processors = 1;
  41 long pid_max = 32768;
  42 int debug = 0;
  43
  44 int update_every = 1;
  45 unsigned long long file_counter = 0;
  46
  47 char *host_prefix = "";
  48 char *config_dir = CONFIG_DIR;
  49
  50 // ----------------------------------------------------------------------------
  51 // memory debugger
  52
  53 struct allocations {
  54         size_t allocations;
  55         size_t allocated;
  56         size_t allocated_max;
  57 } allocations = { 0, 0, 0 };
  58
  59 #define MALLOC_MARK (uint32_t)(0x0BADCAFE)
  60 #define MALLOC_PREFIX (sizeof(uint32_t) * 2)
  61 #define MALLOC_SUFFIX (sizeof(uint32_t))
  62 #define MALLOC_OVERHEAD (MALLOC_PREFIX + MALLOC_SUFFIX)
  63
  64 void *mark_allocation(void *allocated_ptr, size_t size_without_overheads) {
  65         uint32_t *real_ptr = (uint32_t *)allocated_ptr;
  66         real_ptr[0] = MALLOC_MARK;
  67         real_ptr[1] = (uint32_t) size_without_overheads;
  68
  69         uint32_t *end_ptr = (uint32_t *)(allocated_ptr + MALLOC_PREFIX + size_without_overheads);
  70         end_ptr[0] = MALLOC_MARK;
  71
  72         // fprintf(stderr, "MEMORY_POINTER: Allocated at %p, returning %p.\n", allocated_ptr, (void *)(allocated_ptr + MALLOC_PREFIX));
  73
  74         return allocated_ptr + MALLOC_PREFIX;
  75 }
  76
  77 void *check_allocation(const char *file, int line, const char *function, void *marked_ptr, size_t *size_without_overheads_ptr) {
  78         uint32_t *real_ptr = (uint32_t *)(marked_ptr - MALLOC_PREFIX);
  79
  80         // fprintf(stderr, "MEMORY_POINTER: Checking pointer at %p, real %p for %s/%u@%s.\n", marked_ptr, (void *)(marked_ptr - MALLOC_PREFIX), function, line, file);
  81
  82         if(real_ptr[0] != MALLOC_MARK) fatal("MEMORY: prefix MARK is not valid for %s/%u@%s.", function, line, file);
  83
  84         size_t size = real_ptr[1];
  85
  86         uint32_t *end_ptr = (uint32_t *)(marked_ptr + size);
  87         if(end_ptr[0] != MALLOC_MARK) fatal("MEMORY: suffix MARK of allocation with size %zu is not valid for %s/%u@%s.", size, function, line, file);
  88
  89         if(size_without_overheads_ptr) *size_without_overheads_ptr = size;
  90
  91         return real_ptr;
  92 }
  93
  94 void *malloc_debug(const char *file, int line, const char *function, size_t size) {
  95         void *ptr = malloc(size + MALLOC_OVERHEAD);
  96         if(!ptr) fatal("MEMORY: Cannot allocate %zu bytes for %s/%u@%s.", size, function, line, file);
  97
  98         allocations.allocated += size;
  99         allocations.allocations++;
 100
 101         debug(D_MEMORY, "MEMORY: Allocated %zu bytes for %s/%u@%s."
 102                 " Status: allocated %zu in %zu allocs."
 103                 , size
 104                 , function, line, file
 105                 , allocations.allocated
 106                 , allocations.allocations
 107         );
 108
 109         if(allocations.allocated > allocations.allocated_max) {
 110                 debug(D_MEMORY, "MEMORY: total allocation peak increased from %zu to %zu", allocations.allocated_max, allocations.allocated);
 111                 allocations.allocated_max = allocations.allocated;
 112         }
 113
 114         size_t csize;
 115         check_allocation(file, line, function, mark_allocation(ptr, size), &csize);
 116         if(size != csize) {
 117                 fatal("Invalid size.");
 118         }
 119
 120         return mark_allocation(ptr, size);
 121 }
 122
 123 void *calloc_debug(const char *file, int line, const char *function, size_t nmemb, size_t size) {
 124         void *ptr = malloc_debug(file, line, function, (nmemb * size));
 125         bzero(ptr, nmemb * size);
 126         return ptr;
 127 }
 128
 129 void free_debug(const char *file, int line, const char *function, void *ptr) {
 130         size_t size;
 131         void *real_ptr = check_allocation(file, line, function, ptr, &size);
 132
 133         bzero(real_ptr, size + MALLOC_OVERHEAD);
 134
 135         free(real_ptr);
 136         allocations.allocated -= size;
 137         allocations.allocations--;
 138
 139         debug(D_MEMORY, "MEMORY: freed %zu bytes for %s/%u@%s."
 140                 " Status: allocated %zu in %zu allocs."
 141                 , size
 142                 , function, line, file
 143                 , allocations.allocated
 144                 , allocations.allocations
 145         );
 146 }
 147
 148 void *realloc_debug(const char *file, int line, const char *function, void *ptr, size_t size) {
 149         if(!ptr) return malloc_debug(file, line, function, size);
 150         if(!size) { free_debug(file, line, function, ptr); return NULL; }
 151
 152         size_t old_size;
 153         void *real_ptr = check_allocation(file, line, function, ptr, &old_size);
 154
 155         void *new_ptr = realloc(real_ptr, size + MALLOC_OVERHEAD);
 156         if(!new_ptr) fatal("MEMORY: Cannot allocate %zu bytes for %s/%u@%s.", size, function, line, file);
 157
 158         allocations.allocated += size;
 159         allocations.allocated -= old_size;
 160
 161         debug(D_MEMORY, "MEMORY: Re-allocated from %zu to %zu bytes for %s/%u@%s."
 162                 " Status: allocated %z in %zu allocs."
 163                 , old_size, size
 164                 , function, line, file
 165                 , allocations.allocated
 166                 , allocations.allocations
 167         );
 168
 169         if(allocations.allocated > allocations.allocated_max) {
 170                 debug(D_MEMORY, "MEMORY: total allocation peak increased from %zu to %zu", allocations.allocated_max, allocations.allocated);
 171                 allocations.allocated_max = allocations.allocated;
 172         }
 173
 174         return mark_allocation(new_ptr, size);
 175 }
 176
 177 char *strdup_debug(const char *file, int line, const char *function, const char *ptr) {
 178         size_t size = 0;
 179         const char *s = ptr;
 180
 181         while(*s++) size++;
 182         size++;
 183
 184         char *p = malloc_debug(file, line, function, size);
 185         if(!p) fatal("Cannot allocate %zu bytes.", size);
 186
 187         memcpy(p, ptr, size);
 188         return p;
 189 }
 190
 191 #define malloc(size) malloc_debug(__FILE__, __LINE__, __FUNCTION__, (size))
 192 #define calloc(nmemb, size) calloc_debug(__FILE__, __LINE__, __FUNCTION__, (nmemb), (size))
 193 #define realloc(ptr, size) realloc_debug(__FILE__, __LINE__, __FUNCTION__, (ptr), (size))
 194 #define free(ptr) free_debug(__FILE__, __LINE__, __FUNCTION__, (ptr))
 195
 196 #ifdef strdup
 197 #undef strdup
 198 #endif
 199 #define strdup(ptr) strdup_debug(__FILE__, __LINE__, __FUNCTION__, (ptr))
 200
 201 // ----------------------------------------------------------------------------
 202 // helper functions
 203
 204 procfile *ff = NULL;
 205
 206 long get_processors(void) {
 207         int processors = 0;
 208
 209         char filename[FILENAME_MAX + 1];
 210         snprintf(filename, FILENAME_MAX, "%s/proc/stat", host_prefix);
 211
 212         ff = procfile_reopen(ff, filename, "", PROCFILE_FLAG_DEFAULT);
 213         if(!ff) return 1;
 214
 215         ff = procfile_readall(ff);
 216         if(!ff) {
 217                 // procfile_close(ff);
 218                 return 1;
 219         }
 220
 221         unsigned int i;
 222         for(i = 0; i < procfile_lines(ff); i++) {
 223                 if(!procfile_linewords(ff, i)) continue;
 224
 225                 if(strncmp(procfile_lineword(ff, i, 0), "cpu", 3) == 0) processors++;
 226         }
 227         processors--;
 228         if(processors < 1) processors = 1;
 229
 230         // procfile_close(ff);
 231         return processors;
 232 }
 233
 234 long get_pid_max(void) {
 235         long mpid = 32768;
 236
 237         char filename[FILENAME_MAX + 1];
 238         snprintf(filename, FILENAME_MAX, "%s/proc/sys/kernel/pid_max", host_prefix);
 239         ff = procfile_reopen(ff, filename, "", PROCFILE_FLAG_DEFAULT);
 240         if(!ff) return mpid;
 241
 242         ff = procfile_readall(ff);
 243         if(!ff) {
 244                 // procfile_close(ff);
 245                 return mpid;
 246         }
 247
 248         mpid = atol(procfile_lineword(ff, 0, 0));
 249         if(!mpid) mpid = 32768;
 250
 251         // procfile_close(ff);
 252         return mpid;
 253 }
 254
 255 unsigned long long get_hertz(void)
 256 {
 257         unsigned long long myhz = 1;
 258
 259 #ifdef _SC_CLK_TCK
 260         if((myhz = (unsigned long long int) sysconf(_SC_CLK_TCK)) > 0) {
 261                 return myhz;
 262         }
 263 #endif
 264
 265 #ifdef HZ
 266         myhz = HZ;    /* <asm/param.h> */
 267 #else
 268         /* If 32-bit or big-endian (not Alpha or ia64), assume HZ is 100. */
 269         hz = (sizeof(long)==sizeof(int) || htons(999)==999) ? 100UL : 1024UL;
 270 #endif
 271
 272         error("Unknown HZ value. Assuming %llu.", myhz);
 273         return myhz;
 274 }
 275
 276
 277 // ----------------------------------------------------------------------------
 278 // target
 279 // target is the point to aggregate a process tree values
 280
 281 struct target {
 282         char compare[MAX_COMPARE_NAME + 1];
 283         char id[MAX_NAME + 1];
 284         char name[MAX_NAME + 1];
 285
 286         unsigned long long minflt;
 287         unsigned long long cminflt;
 288         unsigned long long majflt;
 289         unsigned long long cmajflt;
 290         unsigned long long utime;
 291         unsigned long long stime;
 292         unsigned long long cutime;
 293         unsigned long long cstime;
 294         unsigned long long num_threads;
 295         unsigned long long rss;
 296
 297         unsigned long long fix_minflt;
 298         unsigned long long fix_cminflt;
 299         unsigned long long fix_majflt;
 300         unsigned long long fix_cmajflt;
 301         unsigned long long fix_utime;
 302         unsigned long long fix_stime;
 303         unsigned long long fix_cutime;
 304         unsigned long long fix_cstime;
 305
 306         unsigned long long statm_size;
 307         unsigned long long statm_resident;
 308         unsigned long long statm_share;
 309         unsigned long long statm_text;
 310         unsigned long long statm_lib;
 311         unsigned long long statm_data;
 312         unsigned long long statm_dirty;
 313
 314         unsigned long long io_logical_bytes_read;
 315         unsigned long long io_logical_bytes_written;
 316         unsigned long long io_read_calls;
 317         unsigned long long io_write_calls;
 318         unsigned long long io_storage_bytes_read;
 319         unsigned long long io_storage_bytes_written;
 320         unsigned long long io_cancelled_write_bytes;
 321
 322         unsigned long long fix_io_logical_bytes_read;
 323         unsigned long long fix_io_logical_bytes_written;
 324         unsigned long long fix_io_read_calls;
 325         unsigned long long fix_io_write_calls;
 326         unsigned long long fix_io_storage_bytes_read;
 327         unsigned long long fix_io_storage_bytes_written;
 328         unsigned long long fix_io_cancelled_write_bytes;
 329
 330         int *fds;
 331         unsigned long long openfiles;
 332         unsigned long long openpipes;
 333         unsigned long long opensockets;
 334         unsigned long long openinotifies;
 335         unsigned long long openeventfds;
 336         unsigned long long opentimerfds;
 337         unsigned long long opensignalfds;
 338         unsigned long long openeventpolls;
 339         unsigned long long openother;
 340
 341         unsigned long processes;        // how many processes have been merged to this
 342         int exposed;                            // if set, we have sent this to netdata
 343         int hidden;                                     // if set, we set the hidden flag on the dimension
 344         int debug;
 345
 346         struct target *target;  // the one that will be reported to netdata
 347         struct target *next;
 348 } *target_root = NULL, *default_target = NULL;
 349
 350 long targets = 0;
 351
 352 // find or create a target
 353 // there are targets that are just agregated to other target (the second argument)
 354 struct target *get_target(const char *id, struct target *target)
 355 {
 356         const char *nid = id;
 357         if(nid[0] == '-') nid++;
 358
 359         struct target *w;
 360         for(w = target_root ; w ; w = w->next)
 361                 if(strncmp(nid, w->id, MAX_NAME) == 0) return w;
 362
 363         w = calloc(sizeof(struct target), 1);
 364         if(!w) {
 365                 error("Cannot allocate %lu bytes of memory", (unsigned long)sizeof(struct target));
 366                 return NULL;
 367         }
 368
 369         strncpy(w->id, nid, MAX_NAME);
 370         strncpy(w->name, nid, MAX_NAME);
 371         strncpy(w->compare, nid, MAX_COMPARE_NAME);
 372         if(id[0] == '-') w->hidden = 1;
 373
 374         w->target = target;
 375
 376         w->next = target_root;
 377         target_root = w;
 378
 379         if(debug) fprintf(stderr, "apps.plugin: adding hook for process '%s', compare '%s' on target '%s'\n", w->id, w->compare, w->target?w->target->id:"");
 380
 381         return w;
 382 }
 383
 384 // read the process groups file
 385 int read_process_groups(const char *name)
 386 {
 387         char buffer[4096+1];
 388         char filename[FILENAME_MAX + 1];
 389
 390         snprintf(filename, FILENAME_MAX, "%s/apps_%s.conf", config_dir, name);
 391
 392         if(debug) fprintf(stderr, "apps.plugin: process groups file: '%s'\n", filename);
 393         FILE *fp = fopen(filename, "r");
 394         if(!fp) {
 395                 error("Cannot open file '%s'", filename);
 396                 return 1;
 397         }
 398
 399         long line = 0;
 400         while(fgets(buffer, 4096, fp) != NULL) {
 401                 int whidden = 0, wdebug = 0;
 402                 line++;
 403
 404                 // if(debug) fprintf(stderr, "apps.plugin: \tread %s\n", buffer);
 405
 406                 char *s = buffer, *t, *p;
 407                 s = trim(s);
 408                 if(!s || !*s || *s == '#') continue;
 409
 410                 if(debug) fprintf(stderr, "apps.plugin: \tread %s\n", s);
 411
 412                 // the target name
 413                 t = strsep(&s, ":");
 414                 if(t) t = trim(t);
 415                 if(!t || !*t) continue;
 416
 417                 while(t[0]) {
 418                         int stop = 1;
 419
 420                         switch(t[0]) {
 421                                 case '-':
 422                                         stop = 0;
 423                                         whidden = 1;
 424                                         t++;
 425                                         break;
 426
 427                                 case '+':
 428                                         stop = 0;
 429                                         wdebug = 1;
 430                                         t++;
 431                                         break;
 432                         }
 433
 434                         if(stop) break;
 435                 }
 436
 437                 if(debug) fprintf(stderr, "apps.plugin: \t\ttarget %s\n", t);
 438
 439                 struct target *w = NULL;
 440                 long count = 0;
 441                 int blen = 0;
 442                 char buffer[4097] = "";
 443                 buffer[4096] = '\0';
 444
 445                 // the process names
 446                 while((p = strsep(&s, " "))) {
 447                         p = trim(p);
 448                         if(!p || !*p) continue;
 449
 450                         strncpy(&buffer[blen], p, 4096 - blen);
 451                         blen = strlen(buffer);
 452
 453                         while(buffer[blen - 1] == '\\') {
 454                                 buffer[blen - 1] = ' ';
 455
 456                                 if((p = strsep(&s, " ")))
 457                                         p = trim(p);
 458
 459                                 if(!p || !*p) p = " ";
 460                                 strncpy(&buffer[blen], p, 4096 - blen);
 461                                 blen = strlen(buffer);
 462                         }
 463
 464                         struct target *n = get_target(buffer, w);
 465                         n->hidden = whidden;
 466                         n->debug = wdebug;
 467                         if(!w) w = n;
 468
 469                         buffer[0] = '\0';
 470                         blen = 0;
 471
 472                         count++;
 473                 }
 474
 475                 if(w) strncpy(w->name, t, MAX_NAME);
 476                 if(!count) error("The line %ld on file '%s', for group '%s' does not state any process names.", line, filename, t);
 477         }
 478         fclose(fp);
 479
 480         default_target = get_target("+p!o@w#e$i^r&7*5(-i)l-o_", NULL); // match nothing
 481         strncpy(default_target->name, "other", MAX_NAME);
 482
 483         return 0;
 484 }
 485
 486
 487 // ----------------------------------------------------------------------------
 488 // data to store for each pid
 489 // see: man proc
 490
 491 struct pid_stat {
 492         int32_t pid;
 493         char comm[MAX_COMPARE_NAME + 1];
 494         // char state;
 495         int32_t ppid;
 496         // int32_t pgrp;
 497         // int32_t session;
 498         // int32_t tty_nr;
 499         // int32_t tpgid;
 500         // uint64_t flags;
 501         unsigned long long minflt;
 502         unsigned long long cminflt;
 503         unsigned long long majflt;
 504         unsigned long long cmajflt;
 505         unsigned long long utime;
 506         unsigned long long stime;
 507         unsigned long long cutime;
 508         unsigned long long cstime;
 509         // int64_t priority;
 510         // int64_t nice;
 511         int32_t num_threads;
 512         // int64_t itrealvalue;
 513         // unsigned long long starttime;
 514         // unsigned long long vsize;
 515         unsigned long long rss;
 516         // unsigned long long rsslim;
 517         // unsigned long long starcode;
 518         // unsigned long long endcode;
 519         // unsigned long long startstack;
 520         // unsigned long long kstkesp;
 521         // unsigned long long kstkeip;
 522         // uint64_t signal;
 523         // uint64_t blocked;
 524         // uint64_t sigignore;
 525         // uint64_t sigcatch;
 526         // uint64_t wchan;
 527         // uint64_t nswap;
 528         // uint64_t cnswap;
 529         // int32_t exit_signal;
 530         // int32_t processor;
 531         // uint32_t rt_priority;
 532         // uint32_t policy;
 533         // unsigned long long delayacct_blkio_ticks;
 534         // uint64_t guest_time;
 535         // int64_t cguest_time;
 536
 537         unsigned long long statm_size;
 538         unsigned long long statm_resident;
 539         unsigned long long statm_share;
 540         unsigned long long statm_text;
 541         unsigned long long statm_lib;
 542         unsigned long long statm_data;
 543         unsigned long long statm_dirty;
 544
 545         unsigned long long io_logical_bytes_read;
 546         unsigned long long io_logical_bytes_written;
 547         unsigned long long io_read_calls;
 548         unsigned long long io_write_calls;
 549         unsigned long long io_storage_bytes_read;
 550         unsigned long long io_storage_bytes_written;
 551         unsigned long long io_cancelled_write_bytes;
 552
 553 #ifdef INCLUDE_CHILDS
 554         unsigned long long old_utime;
 555         unsigned long long old_stime;
 556         unsigned long long old_minflt;
 557         unsigned long long old_majflt;
 558
 559         unsigned long long old_cutime;
 560         unsigned long long old_cstime;
 561         unsigned long long old_cminflt;
 562         unsigned long long old_cmajflt;
 563
 564         unsigned long long fix_cutime;
 565         unsigned long long fix_cstime;
 566         unsigned long long fix_cminflt;
 567         unsigned long long fix_cmajflt;
 568
 569         unsigned long long diff_cutime;
 570         unsigned long long diff_cstime;
 571         unsigned long long diff_cminflt;
 572         unsigned long long diff_cmajflt;
 573 #endif
 574
 575         int *fds;                                       // array of fds it uses
 576         int fds_size;                           // the size of the fds array
 577
 578         int childs;                                     // number of processes directly referencing this
 579         int updated;                            // 1 when update
 580         int merged;                                     // 1 when it has been merged to its parent
 581         int new_entry;
 582         struct target *target;
 583         struct pid_stat *parent;
 584         struct pid_stat *prev;
 585         struct pid_stat *next;
 586 } *root_of_pids = NULL, **all_pids;
 587
 588 long all_pids_count = 0;
 589
 590 struct pid_stat *get_pid_entry(pid_t pid)
 591 {
 592         if(all_pids[pid]) {
 593                 all_pids[pid]->new_entry = 0;
 594                 return all_pids[pid];
 595         }
 596
 597         all_pids[pid] = calloc(sizeof(struct pid_stat), 1);
 598         if(!all_pids[pid]) {
 599                 error("Cannot allocate %lu bytes of memory", (unsigned long)sizeof(struct pid_stat));
 600                 return NULL;
 601         }
 602
 603         all_pids[pid]->fds = calloc(sizeof(int), 100);
 604         if(!all_pids[pid]->fds)
 605                 error("Cannot allocate %ld bytes of memory", (unsigned long)(sizeof(int) * 100));
 606         else all_pids[pid]->fds_size = 100;
 607
 608         if(root_of_pids) root_of_pids->prev = all_pids[pid];
 609         all_pids[pid]->next = root_of_pids;
 610         root_of_pids = all_pids[pid];
 611
 612         all_pids[pid]->pid = pid;
 613         all_pids[pid]->new_entry = 1;
 614
 615         return all_pids[pid];
 616 }
 617
 618 void del_pid_entry(pid_t pid)
 619 {
 620         if(!all_pids[pid]) return;
 621
 622         if(debug) fprintf(stderr, "apps.plugin: process %d %s exited, deleting it.\n", pid, all_pids[pid]->comm);
 623
 624         if(root_of_pids == all_pids[pid]) root_of_pids = all_pids[pid]->next;
 625         if(all_pids[pid]->next) all_pids[pid]->next->prev = all_pids[pid]->prev;
 626         if(all_pids[pid]->prev) all_pids[pid]->prev->next = all_pids[pid]->next;
 627
 628         if(all_pids[pid]->fds) free(all_pids[pid]->fds);
 629         free(all_pids[pid]);
 630         all_pids[pid] = NULL;
 631 }
 632
 633
 634 // ----------------------------------------------------------------------------
 635 // update pids from proc
 636
 637 int read_proc_pid_stat(struct pid_stat *p) {
 638         char filename[FILENAME_MAX + 1];
 639
 640         snprintf(filename, FILENAME_MAX, "%s/proc/%d/stat", host_prefix, p->pid);
 641
 642         ff = procfile_reopen(ff, filename, NULL, PROCFILE_FLAG_NO_ERROR_ON_FILE_IO);
 643         if(!ff) return 1;
 644
 645         ff = procfile_readall(ff);
 646         if(!ff) {
 647                 // procfile_close(ff);
 648                 return 1;
 649         }
 650
 651         file_counter++;
 652
 653         p->comm[0] = '\0';
 654         p->comm[MAX_COMPARE_NAME] = '\0';
 655         size_t blen = 0;
 656
 657         char *s = procfile_lineword(ff, 0, 1);
 658         if(*s == '(') s++;
 659         size_t len = strlen(s);
 660         unsigned int i = 0;
 661         while(len && s[len - 1] != ')') {
 662                 if(blen < MAX_COMPARE_NAME) {
 663                         strncpy(&p->comm[blen], s, MAX_COMPARE_NAME - blen);
 664                         blen = strlen(p->comm);
 665                 }
 666
 667                 i++;
 668                 s = procfile_lineword(ff, 0, 1+i);
 669                 len = strlen(s);
 670         }
 671         if(len && s[len - 1] == ')') s[len - 1] = '\0';
 672         if(blen < MAX_COMPARE_NAME)
 673                 strncpy(&p->comm[blen], s, MAX_COMPARE_NAME - blen);
 674
 675         // p->pid                       = atol(procfile_lineword(ff, 0, 0+i));
 676         // comm is at 1
 677         // p->state                     = *(procfile_lineword(ff, 0, 2+i));
 678         p->ppid                         = (int32_t) atol(procfile_lineword(ff, 0, 3 + i));
 679         // p->pgrp                      = atol(procfile_lineword(ff, 0, 4+i));
 680         // p->session           = atol(procfile_lineword(ff, 0, 5+i));
 681         // p->tty_nr            = atol(procfile_lineword(ff, 0, 6+i));
 682         // p->tpgid                     = atol(procfile_lineword(ff, 0, 7+i));
 683         // p->flags                     = strtoull(procfile_lineword(ff, 0, 8+i), NULL, 10);
 684         p->minflt                       = strtoull(procfile_lineword(ff, 0, 9+i), NULL, 10);
 685         p->cminflt                      = strtoull(procfile_lineword(ff, 0, 10+i), NULL, 10);
 686         p->majflt                       = strtoull(procfile_lineword(ff, 0, 11+i), NULL, 10);
 687         p->cmajflt                      = strtoull(procfile_lineword(ff, 0, 12+i), NULL, 10);
 688         p->utime                        = strtoull(procfile_lineword(ff, 0, 13+i), NULL, 10);
 689         p->stime                        = strtoull(procfile_lineword(ff, 0, 14+i), NULL, 10);
 690         p->cutime                       = strtoull(procfile_lineword(ff, 0, 15+i), NULL, 10);
 691         p->cstime                       = strtoull(procfile_lineword(ff, 0, 16+i), NULL, 10);
 692         // p->priority          = strtoull(procfile_lineword(ff, 0, 17+i), NULL, 10);
 693         // p->nice                      = strtoull(procfile_lineword(ff, 0, 18+i), NULL, 10);
 694         p->num_threads          = (int32_t) atol(procfile_lineword(ff, 0, 19 + i));
 695         // p->itrealvalue       = strtoull(procfile_lineword(ff, 0, 20+i), NULL, 10);
 696         // p->starttime         = strtoull(procfile_lineword(ff, 0, 21+i), NULL, 10);
 697         // p->vsize                     = strtoull(procfile_lineword(ff, 0, 22+i), NULL, 10);
 698         p->rss                          = strtoull(procfile_lineword(ff, 0, 23+i), NULL, 10);
 699         // p->rsslim            = strtoull(procfile_lineword(ff, 0, 24+i), NULL, 10);
 700         // p->starcode          = strtoull(procfile_lineword(ff, 0, 25+i), NULL, 10);
 701         // p->endcode           = strtoull(procfile_lineword(ff, 0, 26+i), NULL, 10);
 702         // p->startstack        = strtoull(procfile_lineword(ff, 0, 27+i), NULL, 10);
 703         // p->kstkesp           = strtoull(procfile_lineword(ff, 0, 28+i), NULL, 10);
 704         // p->kstkeip           = strtoull(procfile_lineword(ff, 0, 29+i), NULL, 10);
 705         // p->signal            = strtoull(procfile_lineword(ff, 0, 30+i), NULL, 10);
 706         // p->blocked           = strtoull(procfile_lineword(ff, 0, 31+i), NULL, 10);
 707         // p->sigignore         = strtoull(procfile_lineword(ff, 0, 32+i), NULL, 10);
 708         // p->sigcatch          = strtoull(procfile_lineword(ff, 0, 33+i), NULL, 10);
 709         // p->wchan                     = strtoull(procfile_lineword(ff, 0, 34+i), NULL, 10);
 710         // p->nswap                     = strtoull(procfile_lineword(ff, 0, 35+i), NULL, 10);
 711         // p->cnswap            = strtoull(procfile_lineword(ff, 0, 36+i), NULL, 10);
 712         // p->exit_signal       = atol(procfile_lineword(ff, 0, 37+i));
 713         // p->processor         = atol(procfile_lineword(ff, 0, 38+i));
 714         // p->rt_priority       = strtoul(procfile_lineword(ff, 0, 39+i), NULL, 10);
 715         // p->policy            = strtoul(procfile_lineword(ff, 0, 40+i), NULL, 10);
 716         // p->delayacct_blkio_ticks             = strtoull(procfile_lineword(ff, 0, 41+i), NULL, 10);
 717         // p->guest_time        = strtoull(procfile_lineword(ff, 0, 42+i), NULL, 10);
 718         // p->cguest_time       = strtoull(procfile_lineword(ff, 0, 43), NULL, 10);
 719
 720         if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: VALUES: %s utime=%llu, stime=%llu, cutime=%llu, cstime=%llu, minflt=%llu, majflt=%llu, cminflt=%llu, cmajflt=%llu, threads=%d\n", p->comm, p->utime, p->stime, p->cutime, p->cstime, p->minflt, p->majflt, p->cminflt, p->cmajflt, p->num_threads);
 721
 722         // procfile_close(ff);
 723         return 0;
 724 }
 725
 726 int read_proc_pid_statm(struct pid_stat *p) {
 727         char filename[FILENAME_MAX + 1];
 728
 729         snprintf(filename, FILENAME_MAX, "%s/proc/%d/statm", host_prefix, p->pid);
 730
 731         ff = procfile_reopen(ff, filename, NULL, PROCFILE_FLAG_NO_ERROR_ON_FILE_IO);
 732         if(!ff) return 1;
 733
 734         ff = procfile_readall(ff);
 735         if(!ff) {
 736                 // procfile_close(ff);
 737                 return 1;
 738         }
 739
 740         file_counter++;
 741
 742         p->statm_size                   = strtoull(procfile_lineword(ff, 0, 0), NULL, 10);
 743         p->statm_resident               = strtoull(procfile_lineword(ff, 0, 1), NULL, 10);
 744         p->statm_share                  = strtoull(procfile_lineword(ff, 0, 2), NULL, 10);
 745         p->statm_text                   = strtoull(procfile_lineword(ff, 0, 3), NULL, 10);
 746         p->statm_lib                    = strtoull(procfile_lineword(ff, 0, 4), NULL, 10);
 747         p->statm_data                   = strtoull(procfile_lineword(ff, 0, 5), NULL, 10);
 748         p->statm_dirty                  = strtoull(procfile_lineword(ff, 0, 6), NULL, 10);
 749
 750         // procfile_close(ff);
 751         return 0;
 752 }
 753
 754 int read_proc_pid_io(struct pid_stat *p) {
 755         char filename[FILENAME_MAX + 1];
 756
 757         snprintf(filename, FILENAME_MAX, "%s/proc/%d/io", host_prefix, p->pid);
 758
 759         ff = procfile_reopen(ff, filename, NULL, PROCFILE_FLAG_NO_ERROR_ON_FILE_IO);
 760         if(!ff) return 1;
 761
 762         ff = procfile_readall(ff);
 763         if(!ff) {
 764                 // procfile_close(ff);
 765                 return 1;
 766         }
 767
 768         file_counter++;
 769
 770         p->io_logical_bytes_read                = strtoull(procfile_lineword(ff, 0, 1), NULL, 10);
 771         p->io_logical_bytes_written     = strtoull(procfile_lineword(ff, 1, 1), NULL, 10);
 772         p->io_read_calls                                = strtoull(procfile_lineword(ff, 2, 1), NULL, 10);
 773         p->io_write_calls                               = strtoull(procfile_lineword(ff, 3, 1), NULL, 10);
 774         p->io_storage_bytes_read                = strtoull(procfile_lineword(ff, 4, 1), NULL, 10);
 775         p->io_storage_bytes_written     = strtoull(procfile_lineword(ff, 5, 1), NULL, 10);
 776         p->io_cancelled_write_bytes             = strtoull(procfile_lineword(ff, 6, 1), NULL, 10);
 777
 778         // procfile_close(ff);
 779         return 0;
 780 }
 781
 782
 783 // ----------------------------------------------------------------------------
 784
 785 #ifdef INCLUDE_CHILDS
 786 // print a tree view of all processes
 787 int walk_down(pid_t pid, int level) {
 788         struct pid_stat *p = NULL;
 789         char b[level+3];
 790         int i, ret = 0;
 791
 792         for(i = 0; i < level; i++) b[i] = '\t';
 793         b[level] = '|';
 794         b[level+1] = '-';
 795         b[level+2] = '\0';
 796
 797         for(p = root_of_pids; p ; p = p->next) {
 798                 if(p->ppid == pid) {
 799                         ret += walk_down(p->pid, level+1);
 800                 }
 801         }
 802
 803         p = all_pids[pid];
 804         if(p) {
 805                 if(!p->updated) ret += 1;
 806                 if(ret) fprintf(stderr, "%s %s %d [%s, %s] c=%d u=%llu+%llu, s=%llu+%llu, cu=%llu+%llu, cs=%llu+%llu, n=%llu+%llu, j=%llu+%llu, cn=%llu+%llu, cj=%llu+%llu\n"
 807                         , b, p->comm, p->pid, p->updated?"OK":"KILLED", p->target->name, p->childs
 808                         , p->utime, p->utime - p->old_utime
 809                         , p->stime, p->stime - p->old_stime
 810                         , p->cutime, p->cutime - p->old_cutime
 811                         , p->cstime, p->cstime - p->old_cstime
 812                         , p->minflt, p->minflt - p->old_minflt
 813                         , p->majflt, p->majflt - p->old_majflt
 814                         , p->cminflt, p->cminflt - p->old_cminflt
 815                         , p->cmajflt, p->cmajflt - p->old_cmajflt
 816                         );
 817         }
 818
 819         return ret;
 820 }
 821 #endif
 822
 823
 824 // ----------------------------------------------------------------------------
 825 // file descriptor
 826 // this is used to keep a global list of all open files of the system
 827 // it is needed in order to figure out the unique files a process tree has open
 828
 829 #define FILE_DESCRIPTORS_INCREASE_STEP 100
 830
 831 struct file_descriptor {
 832         avl avl;
 833         uint32_t magic;
 834         uint32_t hash;
 835         const char *name;
 836         int type;
 837         int count;
 838         int pos;
 839 } *all_files = NULL;
 840
 841 int all_files_len = 0;
 842 int all_files_size = 0;
 843
 844 int file_descriptor_compare(void* a, void* b) {
 845         if(((struct file_descriptor *)a)->magic != 0x0BADCAFE || ((struct file_descriptor *)b)->magic != 0x0BADCAFE)
 846                 error("Corrupted index data detected. Please report this.");
 847
 848         if(((struct file_descriptor *)a)->hash < ((struct file_descriptor *)b)->hash)
 849                 return -1;
 850         else if(((struct file_descriptor *)a)->hash > ((struct file_descriptor *)b)->hash)
 851                 return 1;
 852         else return strcmp(((struct file_descriptor *)a)->name, ((struct file_descriptor *)b)->name);
 853 }
 854 int file_descriptor_iterator(avl *a) { if(a) {}; return 0; }
 855
 856 avl_tree all_files_index = {
 857                 NULL,
 858                 file_descriptor_compare,
 859 #ifdef AVL_LOCK_WITH_MUTEX
 860                 PTHREAD_MUTEX_INITIALIZER
 861 #else
 862                 PTHREAD_RWLOCK_INITIALIZER
 863 #endif
 864 };
 865
 866 static struct file_descriptor *file_descriptor_find(const char *name, uint32_t hash) {
 867         struct file_descriptor *result = NULL, tmp;
 868         tmp.hash = (hash)?hash:simple_hash(name);
 869         tmp.name = name;
 870         tmp.count = 0;
 871         tmp.pos = 0;
 872         tmp.magic = 0x0BADCAFE;
 873
 874         avl_search(&all_files_index, (avl *)&tmp, file_descriptor_iterator, (avl **)&result);
 875         return result;
 876 }
 877
 878 #define file_descriptor_add(fd) avl_insert(&all_files_index, (avl *)(fd))
 879 #define file_descriptor_remove(fd) avl_remove(&all_files_index, (avl *)(fd))
 880
 881 #define FILETYPE_OTHER 0
 882 #define FILETYPE_FILE 1
 883 #define FILETYPE_PIPE 2
 884 #define FILETYPE_SOCKET 3
 885 #define FILETYPE_INOTIFY 4
 886 #define FILETYPE_EVENTFD 5
 887 #define FILETYPE_EVENTPOLL 6
 888 #define FILETYPE_TIMERFD 7
 889 #define FILETYPE_SIGNALFD 8
 890
 891 void file_descriptor_not_used(int id)
 892 {
 893         if(id > 0 && id < all_files_size) {
 894                 if(all_files[id].magic != 0x0BADCAFE) {
 895                         error("Ignoring request to remove empty file id %d.", id);
 896                         return;
 897                 }
 898
 899                 if(debug) fprintf(stderr, "apps.plugin: decreasing slot %d (count = %d).\n", id, all_files[id].count);
 900
 901                 if(all_files[id].count > 0) {
 902                         all_files[id].count--;
 903
 904                         if(!all_files[id].count) {
 905                                 if(debug) fprintf(stderr, "apps.plugin:   >> slot %d is empty.\n", id);
 906                                 file_descriptor_remove(&all_files[id]);
 907                                 all_files[id].magic = 0x00000000;
 908                                 all_files_len--;
 909                         }
 910                 }
 911                 else
 912                         error("Request to decrease counter of fd %d (%s), while the use counter is 0", id, all_files[id].name);
 913         }
 914         else    error("Request to decrease counter of fd %d, which is outside the array size (1 to %d)", id, all_files_size);
 915 }
 916
 917 int file_descriptor_find_or_add(const char *name)
 918 {
 919         static int last_pos = 0;
 920         uint32_t hash = simple_hash(name);
 921
 922         if(debug) fprintf(stderr, "apps.plugin: adding or finding name '%s' with hash %u\n", name, hash);
 923
 924         struct file_descriptor *fd = file_descriptor_find(name, hash);
 925         if(fd) {
 926                 // found
 927                 if(debug) fprintf(stderr, "apps.plugin:   >> found on slot %d\n", fd->pos);
 928                 fd->count++;
 929                 return fd->pos;
 930         }
 931         // not found
 932
 933         // check we have enough memory to add it
 934         if(!all_files || all_files_len == all_files_size) {
 935                 void *old = all_files;
 936                 int i;
 937
 938                 // there is no empty slot
 939                 if(debug) fprintf(stderr, "apps.plugin: extending fd array to %d entries\n", all_files_size + FILE_DESCRIPTORS_INCREASE_STEP);
 940                 all_files = realloc(all_files, (all_files_size + FILE_DESCRIPTORS_INCREASE_STEP) * sizeof(struct file_descriptor));
 941
 942                 // if the address changed, we have to rebuild the index
 943                 // since all pointers are now invalid
 944                 if(old && old != (void *)all_files) {
 945                         if(debug) fprintf(stderr, "apps.plugin:   >> re-indexing.\n");
 946                         all_files_index.root = NULL;
 947                         for(i = 0; i < all_files_size; i++) {
 948                                 if(!all_files[i].count) continue;
 949                                 file_descriptor_add(&all_files[i]);
 950                         }
 951                         if(debug) fprintf(stderr, "apps.plugin:   >> re-indexing done.\n");
 952                 }
 953
 954                 for(i = all_files_size; i < (all_files_size + FILE_DESCRIPTORS_INCREASE_STEP); i++) {
 955                         all_files[i].count = 0;
 956                         all_files[i].name = NULL;
 957                         all_files[i].magic = 0x00000000;
 958                         all_files[i].pos = i;
 959                 }
 960
 961                 if(!all_files_size) all_files_len = 1;
 962                 all_files_size += FILE_DESCRIPTORS_INCREASE_STEP;
 963         }
 964
 965         if(debug) fprintf(stderr, "apps.plugin:   >> searching for empty slot.\n");
 966
 967         // search for an empty slot
 968         int i, c;
 969         for(i = 0, c = last_pos ; i < all_files_size ; i++, c++) {
 970                 if(c >= all_files_size) c = 0;
 971                 if(c == 0) continue;
 972
 973                 if(!all_files[c].count) {
 974                         if(debug) fprintf(stderr, "apps.plugin:   >> Examining slot %d.\n", c);
 975
 976                         if(all_files[c].magic == 0x0BADCAFE && all_files[c].name && file_descriptor_find(all_files[c].name, all_files[c].hash))
 977                                 error("fd on position %d is not cleared properly. It still has %s in it.\n", c, all_files[c].name);
 978
 979                         if(debug) fprintf(stderr, "apps.plugin:   >> %s fd position %d for %s (last name: %s)\n", all_files[c].name?"re-using":"using", c, name, all_files[c].name);
 980                         if(all_files[c].name) free((void *)all_files[c].name);
 981                         all_files[c].name = NULL;
 982                         last_pos = c;
 983                         break;
 984                 }
 985         }
 986         if(i == all_files_size) {
 987                 fatal("We should find an empty slot, but there isn't any");
 988                 exit(1);
 989         }
 990         if(debug) fprintf(stderr, "apps.plugin:   >> updating slot %d.\n", c);
 991
 992         all_files_len++;
 993
 994         // else we have an empty slot in 'c'
 995
 996         int type;
 997         if(name[0] == '/') type = FILETYPE_FILE;
 998         else if(strncmp(name, "pipe:", 5) == 0) type = FILETYPE_PIPE;
 999         else if(strncmp(name, "socket:", 7) == 0) type = FILETYPE_SOCKET;
1000         else if(strcmp(name, "anon_inode:inotify") == 0 || strcmp(name, "inotify") == 0) type = FILETYPE_INOTIFY;
1001         else if(strcmp(name, "anon_inode:[eventfd]") == 0) type = FILETYPE_EVENTFD;
1002         else if(strcmp(name, "anon_inode:[eventpoll]") == 0) type = FILETYPE_EVENTPOLL;
1003         else if(strcmp(name, "anon_inode:[timerfd]") == 0) type = FILETYPE_TIMERFD;
1004         else if(strcmp(name, "anon_inode:[signalfd]") == 0) type = FILETYPE_SIGNALFD;
1005         else if(strncmp(name, "anon_inode:", 11) == 0) {
1006                 if(debug) fprintf(stderr, "apps.plugin: FIXME: unknown anonymous inode: %s\n", name);
1007                 type = FILETYPE_OTHER;
1008         }
1009         else {
1010                 if(debug) fprintf(stderr, "apps.plugin: FIXME: cannot understand linkname: %s\n", name);
1011                 type = FILETYPE_OTHER;
1012         }
1013
1014         all_files[c].name = strdup(name);
1015         all_files[c].hash = hash;
1016         all_files[c].type = type;
1017         all_files[c].pos  = c;
1018         all_files[c].count = 1;
1019         all_files[c].magic = 0x0BADCAFE;
1020
1021         file_descriptor_add(&all_files[c]);
1022
1023         if(debug) fprintf(stderr, "apps.plugin: using fd position %d (name: %s)\n", c, all_files[c].name);
1024
1025         return c;
1026 }
1027
1028
1029 // 1. read all files in /proc
1030 // 2. for each numeric directory:
1031 //    i.   read /proc/pid/stat
1032 //    ii.  read /proc/pid/statm
1033 //    iii. read /proc/pid/io (requires root access)
1034 //    iii. read the entries in directory /proc/pid/fd (requires root access)
1035 //         for each entry:
1036 //         a. find or create a struct file_descriptor
1037 //         b. cleanup any old/unused file_descriptors
1038
1039 // after all these, some pids may be linked to targets, while others may not
1040
1041 // in case of errors, only 1 every 1000 errors is printed
1042 // to avoid filling up all disk space
1043 // if debug is enabled, all errors are printed
1044
1045 int update_from_proc(void)
1046 {
1047         static long count_errors = 0;
1048
1049         char filename[FILENAME_MAX+1];
1050         char dirname[FILENAME_MAX + 1];
1051
1052         snprintf(dirname, FILENAME_MAX, "%s/proc", host_prefix);
1053         DIR *dir = opendir(dirname);
1054         if(!dir) return 0;
1055
1056         struct dirent *file = NULL;
1057         struct pid_stat *p = NULL;
1058
1059         // mark them all as un-updated
1060         all_pids_count = 0;
1061         for(p = root_of_pids; p ; p = p->next) {
1062                 all_pids_count++;
1063                 p->parent = NULL;
1064                 p->updated = 0;
1065                 p->childs = 0;
1066                 p->merged = 0;
1067                 p->new_entry = 0;
1068         }
1069
1070         while((file = readdir(dir))) {
1071                 char *endptr = file->d_name;
1072                 pid_t pid = (pid_t) strtoul(file->d_name, &endptr, 10);
1073                 if(pid <= 0 || pid > pid_max || endptr == file->d_name || *endptr != '\0') continue;
1074
1075                 p = get_pid_entry(pid);
1076                 if(!p) continue;
1077
1078                 // --------------------------------------------------------------------
1079                 // /proc/<pid>/stat
1080
1081                 if(read_proc_pid_stat(p)) {
1082                         if(!count_errors++ || debug || (p->target && p->target->debug))
1083                                 error("Cannot process %s/proc/%d/stat", host_prefix, pid);
1084
1085                         continue;
1086                 }
1087                 if(p->ppid < 0 || p->ppid > pid_max) p->ppid = 0;
1088
1089
1090                 // --------------------------------------------------------------------
1091                 // /proc/<pid>/statm
1092
1093                 if(read_proc_pid_statm(p)) {
1094                         if(!count_errors++ || debug || (p->target && p->target->debug))
1095                                 error("Cannot process %s/proc/%d/statm", host_prefix, pid);
1096
1097                         continue;
1098                 }
1099
1100
1101                 // --------------------------------------------------------------------
1102                 // /proc/<pid>/io
1103
1104                 if(read_proc_pid_io(p)) {
1105                         if(!count_errors++ || debug || (p->target && p->target->debug))
1106                                 error("Cannot process %s/proc/%d/io", host_prefix, pid);
1107
1108                         // on systems without /proc/X/io
1109                         // allow proceeding without I/O information
1110                         // continue;
1111                 }
1112
1113                 // --------------------------------------------------------------------
1114                 // link it
1115
1116                 // check if it is target
1117                 // we do this only once, the first time this pid is loaded
1118                 if(p->new_entry) {
1119                         if(debug) fprintf(stderr, "apps.plugin: \tJust added %s\n", p->comm);
1120
1121                         struct target *w;
1122                         for(w = target_root; w ; w = w->next) {
1123                                 // if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: \t\tcomparing '%s' with '%s'\n", w->compare, p->comm);
1124
1125                                 if(strcmp(w->compare, p->comm) == 0) {
1126                                         if(w->target) p->target = w->target;
1127                                         else p->target = w;
1128
1129                                         if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: \t\t%s linked to target %s\n", p->comm, p->target->name);
1130                                 }
1131                         }
1132                 }
1133
1134                 // --------------------------------------------------------------------
1135                 // /proc/<pid>/fd
1136
1137                 snprintf(filename, FILENAME_MAX, "%s/proc/%s/fd", host_prefix, file->d_name);
1138                 DIR *fds = opendir(filename);
1139                 if(fds) {
1140                         int c;
1141                         struct dirent *de;
1142                         char fdname[FILENAME_MAX + 1];
1143                         char linkname[FILENAME_MAX + 1];
1144
1145                         // make the array negative
1146                         for(c = 0 ; c < p->fds_size ; c++) p->fds[c] = -p->fds[c];
1147
1148                         while((de = readdir(fds))) {
1149                                 if(strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0) continue;
1150
1151                                 // check if the fds array is small
1152                                 int fdid = atoi(de->d_name);
1153                                 if(fdid < 0) continue;
1154                                 if(fdid >= p->fds_size) {
1155                                         // it is small, extend it
1156                                         if(debug) fprintf(stderr, "apps.plugin: extending fd memory slots for %s from %d to %d\n", p->comm, p->fds_size, fdid + 100);
1157                                         p->fds = realloc(p->fds, (fdid + 100) * sizeof(int));
1158                                         if(!p->fds) {
1159                                                 error("Cannot re-allocate fds for %s", p->comm);
1160                                                 break;
1161                                         }
1162
1163                                         // and initialize it
1164                                         for(c = p->fds_size ; c < (fdid + 100) ; c++) p->fds[c] = 0;
1165                                         p->fds_size = fdid + 100;
1166                                 }
1167
1168                                 if(p->fds[fdid] == 0) {
1169                                         // we don't know this fd, get it
1170
1171                                         sprintf(fdname, "%s/proc/%s/fd/%s", host_prefix, file->d_name, de->d_name);
1172                                         ssize_t l = readlink(fdname, linkname, FILENAME_MAX);
1173                                         if(l == -1) {
1174                                                 if(debug || (p->target && p->target->debug)) {
1175                                                         if(!count_errors++ || debug || (p->target && p->target->debug))
1176                                                                 error("Cannot read link %s", fdname);
1177                                                 }
1178                                                 continue;
1179                                         }
1180                                         linkname[l] = '\0';
1181                                         file_counter++;
1182
1183                                         // if another process already has this, we will get
1184                                         // the same id
1185                                         p->fds[fdid] = file_descriptor_find_or_add(linkname);
1186                                 }
1187
1188                                 // else make it positive again, we need it
1189                                 // of course, the actual file may have changed, but we don't care so much
1190                                 // FIXME: we could compare the inode as returned by readdir direct structure
1191                                 else p->fds[fdid] = -p->fds[fdid];
1192                         }
1193                         closedir(fds);
1194
1195                         // remove all the negative file descriptors
1196                         for(c = 0 ; c < p->fds_size ; c++) if(p->fds[c] < 0) {
1197                                 file_descriptor_not_used(-p->fds[c]);
1198                                 p->fds[c] = 0;
1199                         }
1200                 }
1201
1202                 // --------------------------------------------------------------------
1203                 // done!
1204
1205                 // mark it as updated
1206                 p->updated = 1;
1207         }
1208         if(count_errors > 1000) {
1209                 error("%ld more errors encountered\n", count_errors - 1);
1210                 count_errors = 0;
1211         }
1212
1213         closedir(dir);
1214
1215         return 1;
1216 }
1217
1218
1219 // ----------------------------------------------------------------------------
1220 // update statistics on the targets
1221
1222 // 1. link all childs to their parents
1223 // 2. go from bottom to top, marking as merged all childs to their parents
1224 //    this step links all parents without a target to the child target, if any
1225 // 3. link all top level processes (the ones not merged) to the default target
1226 // 4. go from top to bottom, linking all childs without a target, to their parent target
1227 //    after this step, all processes have a target
1228 // [5. for each killed pid (updated = 0), remove its usage from its target]
1229 // 6. zero all targets
1230 // 7. concentrate all values on the targets
1231 // 8. remove all killed processes
1232 // 9. find the unique file count for each target
1233
1234 void update_statistics(void)
1235 {
1236         int c;
1237         struct pid_stat *p = NULL;
1238
1239         // link all parents and update childs count
1240         for(p = root_of_pids; p ; p = p->next) {
1241                 if(p->ppid > 0 && p->ppid <= pid_max && all_pids[p->ppid]) {
1242                         if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: \tparent of %d %s is %d %s\n", p->pid, p->comm, p->ppid, all_pids[p->ppid]->comm);
1243
1244                         p->parent = all_pids[p->ppid];
1245                         p->parent->childs++;
1246                 }
1247                 else if(p->ppid != 0) error("pid %d %s states parent %d, but the later does not exist.", p->pid, p->comm, p->ppid);
1248         }
1249
1250         // find all the procs with 0 childs and merge them to their parents
1251         // repeat, until nothing more can be done.
1252         int found = 1;
1253         while(found) {
1254                 found = 0;
1255                 for(p = root_of_pids; p ; p = p->next) {
1256                         // if this process does not have any childs, and
1257                         // is not already merged, and
1258                         // its parent has childs waiting to be merged, and
1259                         // the target of this process and its parent is the same, or the parent does not have a target, or this process does not have a parent
1260                         // and its parent is not init
1261                         // then... merge them!
1262                         if(!p->childs && !p->merged && p->parent && p->parent->childs && (p->target == p->parent->target || !p->parent->target || !p->target) && p->ppid != 1) {
1263                                 p->parent->childs--;
1264                                 p->merged = 1;
1265
1266                                 // the parent inherits the child's target, if it does not have a target itself
1267                                 if(p->target && !p->parent->target) {
1268                                         p->parent->target = p->target;
1269                                         if(debug || (p->target && p->target->debug)) fprintf(stderr, "apps.plugin: \t\ttarget %s is inherited by %d %s from its child %d %s.\n", p->target->name, p->parent->pid, p->parent->comm, p->pid, p->comm);
1270                                 }
1271
1272                                 found++;
1273                         }
1274                 }
1275                 if(debug) fprintf(stderr, "apps.plugin: merged %d processes\n", found);
1276         }
1277
1278         // give a default target on all top level processes
1279         // init goes always to default target
1280         if(all_pids[1]) all_pids[1]->target = default_target;
1281
1282         for(p = root_of_pids; p ; p = p->next) {
1283                 // if the process is not merged itself
1284                 // then is is a top level process
1285                 if(!p->merged && !p->target) p->target = default_target;
1286
1287 #ifdef INCLUDE_CHILDS
1288                 // by the way, update the diffs
1289                 // will be used later for substracting killed process times
1290                 p->diff_cutime = p->utime - p->cutime;
1291                 p->diff_cstime = p->stime - p->cstime;
1292                 p->diff_cminflt = p->minflt - p->cminflt;
1293                 p->diff_cmajflt = p->majflt - p->cmajflt;
1294 #endif
1295         }
1296
1297         // give a target to all merged child processes
1298         found = 1;
1299         while(found) {
1300                 found = 0;
1301                 for(p = root_of_pids; p ; p = p->next) {
1302                         if(!p->target && p->merged && p->parent && p->parent->target) {
1303                                 p->target = p->parent->target;
1304                                 found++;
1305                         }
1306                 }
1307         }
1308
1309 #ifdef INCLUDE_CHILDS
1310         // for each killed process, remove its values from the parents
1311         // sums (we had already added them in a previous loop)
1312         for(p = root_of_pids; p ; p = p->next) {
1313                 if(p->updated) continue;
1314
1315                 if(debug) fprintf(stderr, "apps.plugin: UNMERGING %d %s\n", p->pid, p->comm);
1316
1317                 unsigned long long diff_utime = p->utime + p->cutime + p->fix_cutime;
1318                 unsigned long long diff_stime = p->stime + p->cstime + p->fix_cstime;
1319                 unsigned long long diff_minflt = p->minflt + p->cminflt + p->fix_cminflt;
1320                 unsigned long long diff_majflt = p->majflt + p->cmajflt + p->fix_cmajflt;
1321
1322                 struct pid_stat *t = p;
1323                 while((t = t->parent)) {
1324                         if(!t->updated) continue;
1325
1326                         unsigned long long x;
1327                         if(diff_utime && t->diff_cutime) {
1328                                 x = (t->diff_cutime < diff_utime)?t->diff_cutime:diff_utime;
1329                                 diff_utime -= x;
1330                                 t->diff_cutime -= x;
1331                                 t->fix_cutime += x;
1332                                 if(debug) fprintf(stderr, "apps.plugin: \t cutime %llu from %d %s %s\n", x, t->pid, t->comm, t->target->name);
1333                         }
1334                         if(diff_stime && t->diff_cstime) {
1335                                 x = (t->diff_cstime < diff_stime)?t->diff_cstime:diff_stime;
1336                                 diff_stime -= x;
1337                                 t->diff_cstime -= x;
1338                                 t->fix_cstime += x;
1339                                 if(debug) fprintf(stderr, "apps.plugin: \t cstime %llu from %d %s %s\n", x, t->pid, t->comm, t->target->name);
1340                         }
1341                         if(diff_minflt && t->diff_cminflt) {
1342                                 x = (t->diff_cminflt < diff_minflt)?t->diff_cminflt:diff_minflt;
1343                                 diff_minflt -= x;
1344                                 t->diff_cminflt -= x;
1345                                 t->fix_cminflt += x;
1346                                 if(debug) fprintf(stderr, "apps.plugin: \t cminflt %llu from %d %s %s\n", x, t->pid, t->comm, t->target->name);
1347                         }
1348                         if(diff_majflt && t->diff_cmajflt) {
1349                                 x = (t->diff_cmajflt < diff_majflt)?t->diff_cmajflt:diff_majflt;
1350                                 diff_majflt -= x;
1351                                 t->diff_cmajflt -= x;
1352                                 t->fix_cmajflt += x;
1353                                 if(debug) fprintf(stderr, "apps.plugin: \t cmajflt %llu from %d %s %s\n", x, t->pid, t->comm, t->target->name);
1354                         }
1355                 }
1356
1357                 if(diff_utime) error("Cannot fix up utime %llu", diff_utime);
1358                 if(diff_stime) error("Cannot fix up stime %llu", diff_stime);
1359                 if(diff_minflt) error("Cannot fix up minflt %llu", diff_minflt);
1360                 if(diff_majflt) error("Cannot fix up majflt %llu", diff_majflt);
1361         }
1362 #endif
1363
1364         // zero all the targets
1365         targets = 0;
1366         struct target *w;
1367         for (w = target_root; w ; w = w->next) {
1368                 targets++;
1369
1370                 w->fds = calloc(sizeof(int), (size_t) all_files_size);
1371                 if(!w->fds)
1372                         error("Cannot allocate memory for fds in %s", w->name);
1373
1374                 w->minflt = 0;
1375                 w->majflt = 0;
1376                 w->utime = 0;
1377                 w->stime = 0;
1378                 w->cminflt = 0;
1379                 w->cmajflt = 0;
1380                 w->cutime = 0;
1381                 w->cstime = 0;
1382                 w->num_threads = 0;
1383                 w->rss = 0;
1384                 w->processes = 0;
1385
1386                 w->statm_size = 0;
1387                 w->statm_resident = 0;
1388                 w->statm_share = 0;
1389                 w->statm_text = 0;
1390                 w->statm_lib = 0;
1391                 w->statm_data = 0;
1392                 w->statm_dirty = 0;
1393
1394                 w->io_logical_bytes_read = 0;
1395                 w->io_logical_bytes_written = 0;
1396                 w->io_read_calls = 0;
1397                 w->io_write_calls = 0;
1398                 w->io_storage_bytes_read = 0;
1399                 w->io_storage_bytes_written = 0;
1400                 w->io_cancelled_write_bytes = 0;
1401         }
1402
1403 #ifdef INCLUDE_CHILDS
1404         if(debug) walk_down(0, 1);
1405 #endif
1406
1407         // concentrate everything on the targets
1408         for(p = root_of_pids; p ; p = p->next) {
1409                 if(!p->target) {
1410                         error("pid %d %s was left without a target!", p->pid, p->comm);
1411                         continue;
1412                 }
1413
1414                 if(p->updated) {
1415                         p->target->cutime += p->cutime; // - p->fix_cutime;
1416                         p->target->cstime += p->cstime; // - p->fix_cstime;
1417                         p->target->cminflt += p->cminflt; // - p->fix_cminflt;
1418                         p->target->cmajflt += p->cmajflt; // - p->fix_cmajflt;
1419
1420                         p->target->utime += p->utime; //+ (p->pid != 1)?(p->cutime - p->fix_cutime):0;
1421                         p->target->stime += p->stime; //+ (p->pid != 1)?(p->cstime - p->fix_cstime):0;
1422                         p->target->minflt += p->minflt; //+ (p->pid != 1)?(p->cminflt - p->fix_cminflt):0;
1423                         p->target->majflt += p->majflt; //+ (p->pid != 1)?(p->cmajflt - p->fix_cmajflt):0;
1424
1425                         //if(p->num_threads < 0)
1426                         //      error("Negative threads number for pid '%s' (%d): %d", p->comm, p->pid, p->num_threads);
1427
1428                         //if(p->num_threads > 10000)
1429                         //      error("Excessive threads number for pid '%s' (%d): %d", p->comm, p->pid, p->num_threads);
1430
1431                         p->target->num_threads += p->num_threads;
1432                         p->target->rss += p->rss;
1433
1434                         p->target->statm_size += p->statm_size;
1435                         p->target->statm_resident += p->statm_resident;
1436                         p->target->statm_share += p->statm_share;
1437                         p->target->statm_text += p->statm_text;
1438                         p->target->statm_lib += p->statm_lib;
1439                         p->target->statm_data += p->statm_data;
1440                         p->target->statm_dirty += p->statm_dirty;
1441
1442                         p->target->io_logical_bytes_read += p->io_logical_bytes_read;
1443                         p->target->io_logical_bytes_written += p->io_logical_bytes_written;
1444                         p->target->io_read_calls += p->io_read_calls;
1445                         p->target->io_write_calls += p->io_write_calls;
1446                         p->target->io_storage_bytes_read += p->io_storage_bytes_read;
1447                         p->target->io_storage_bytes_written += p->io_storage_bytes_written;
1448                         p->target->io_cancelled_write_bytes += p->io_cancelled_write_bytes;
1449
1450                         p->target->processes++;
1451
1452                         for(c = 0; c < p->fds_size ;c++) {
1453                                 if(p->fds[c] == 0) continue;
1454                                 if(p->fds[c] < all_files_size) {
1455                                         if(p->target->fds) p->target->fds[p->fds[c]]++;
1456                                 }
1457                                 else
1458                                         error("Invalid fd number %d", p->fds[c]);
1459                         }
1460
1461                         if(debug || p->target->debug) fprintf(stderr, "apps.plugin: \tAgregating %s pid %d on %s utime=%llu, stime=%llu, cutime=%llu, cstime=%llu, minflt=%llu, majflt=%llu, cminflt=%llu, cmajflt=%llu\n", p->comm, p->pid, p->target->name, p->utime, p->stime, p->cutime, p->cstime, p->minflt, p->majflt, p->cminflt, p->cmajflt);
1462
1463 /*                      if(p->utime - p->old_utime > 100) fprintf(stderr, "BIG CHANGE: %d %s utime increased by %llu from %llu to %llu\n", p->pid, p->comm, p->utime - p->old_utime, p->old_utime, p->utime);
1464                         if(p->cutime - p->old_cutime > 100) fprintf(stderr, "BIG CHANGE: %d %s cutime increased by %llu from %llu to %llu\n", p->pid, p->comm, p->cutime - p->old_cutime, p->old_cutime, p->cutime);
1465                         if(p->stime - p->old_stime > 100) fprintf(stderr, "BIG CHANGE: %d %s stime increased by %llu from %llu to %llu\n", p->pid, p->comm, p->stime - p->old_stime, p->old_stime, p->stime);
1466                         if(p->cstime - p->old_cstime > 100) fprintf(stderr, "BIG CHANGE: %d %s cstime increased by %llu from %llu to %llu\n", p->pid, p->comm, p->cstime - p->old_cstime, p->old_cstime, p->cstime);
1467                         if(p->minflt - p->old_minflt > 5000) fprintf(stderr, "BIG CHANGE: %d %s minflt increased by %llu from %llu to %llu\n", p->pid, p->comm, p->minflt - p->old_minflt, p->old_minflt, p->minflt);
1468                         if(p->majflt - p->old_majflt > 5000) fprintf(stderr, "BIG CHANGE: %d %s majflt increased by %llu from %llu to %llu\n", p->pid, p->comm, p->majflt - p->old_majflt, p->old_majflt, p->majflt);
1469                         if(p->cminflt - p->old_cminflt > 15000) fprintf(stderr, "BIG CHANGE: %d %s cminflt increased by %llu from %llu to %llu\n", p->pid, p->comm, p->cminflt - p->old_cminflt, p->old_cminflt, p->cminflt);
1470                         if(p->cmajflt - p->old_cmajflt > 15000) fprintf(stderr, "BIG CHANGE: %d %s cmajflt increased by %llu from %llu to %llu\n", p->pid, p->comm, p->cmajflt - p->old_cmajflt, p->old_cmajflt, p->cmajflt);
1471 */
1472 #ifdef INCLUDE_CHILDS
1473                         p->old_utime = p->utime;
1474                         p->old_cutime = p->cutime;
1475                         p->old_stime = p->stime;
1476                         p->old_cstime = p->cstime;
1477                         p->old_minflt = p->minflt;
1478                         p->old_majflt = p->majflt;
1479                         p->old_cminflt = p->cminflt;
1480                         p->old_cmajflt = p->cmajflt;
1481 #endif
1482                 }
1483                 else {
1484                         // since the process has exited, the user
1485                         // will see a drop in our charts, because the incremental
1486                         // values of this process will not be there
1487
1488                         // add them to the fix_* values and they will be added to
1489                         // the reported values, so that the report goes steady
1490                         p->target->fix_minflt += p->minflt;
1491                         p->target->fix_majflt += p->majflt;
1492                         p->target->fix_utime += p->utime;
1493                         p->target->fix_stime += p->stime;
1494                         p->target->fix_cminflt += p->cminflt;
1495                         p->target->fix_cmajflt += p->cmajflt;
1496                         p->target->fix_cutime += p->cutime;
1497                         p->target->fix_cstime += p->cstime;
1498
1499                         p->target->fix_io_logical_bytes_read += p->io_logical_bytes_read;
1500                         p->target->fix_io_logical_bytes_written += p->io_logical_bytes_written;
1501                         p->target->fix_io_read_calls += p->io_read_calls;
1502                         p->target->fix_io_write_calls += p->io_write_calls;
1503                         p->target->fix_io_storage_bytes_read += p->io_storage_bytes_read;
1504                         p->target->fix_io_storage_bytes_written += p->io_storage_bytes_written;
1505                         p->target->fix_io_cancelled_write_bytes += p->io_cancelled_write_bytes;
1506                 }
1507         }
1508
1509 //      fprintf(stderr, "\n");
1510         // cleanup all un-updated processed (exited, killed, etc)
1511         for(p = root_of_pids; p ;) {
1512                 if(!p->updated) {
1513 //                      fprintf(stderr, "\tEXITED %d %s [parent %d %s, target %s] utime=%llu, stime=%llu, cutime=%llu, cstime=%llu, minflt=%llu, majflt=%llu, cminflt=%llu, cmajflt=%llu\n", p->pid, p->comm, p->parent->pid, p->parent->comm, p->target->name,  p->utime, p->stime, p->cutime, p->cstime, p->minflt, p->majflt, p->cminflt, p->cmajflt);
1514
1515                         for(c = 0 ; c < p->fds_size ; c++) if(p->fds[c] > 0) {
1516                                 file_descriptor_not_used(p->fds[c]);
1517                                 p->fds[c] = 0;
1518                         }
1519
1520                         pid_t r = p->pid;
1521                         p = p->next;
1522                         del_pid_entry(r);
1523                 }
1524                 else p = p->next;
1525         }
1526
1527         for (w = target_root; w ; w = w->next) {
1528                 w->openfiles = 0;
1529                 w->openpipes = 0;
1530                 w->opensockets = 0;
1531                 w->openinotifies = 0;
1532                 w->openeventfds = 0;
1533                 w->opentimerfds = 0;
1534                 w->opensignalfds = 0;
1535                 w->openeventpolls = 0;
1536                 w->openother = 0;
1537
1538                 for(c = 1; c < all_files_size ;c++) {
1539                         if(w->fds && w->fds[c] > 0) switch(all_files[c].type) {
1540                                 case FILETYPE_FILE:
1541                                         w->openfiles++;
1542                                         break;
1543
1544                                 case FILETYPE_PIPE:
1545                                         w->openpipes++;
1546                                         break;
1547
1548                                 case FILETYPE_SOCKET:
1549                                         w->opensockets++;
1550                                         break;
1551
1552                                 case FILETYPE_INOTIFY:
1553                                         w->openinotifies++;
1554                                         break;
1555
1556                                 case FILETYPE_EVENTFD:
1557                                         w->openeventfds++;
1558                                         break;
1559
1560                                 case FILETYPE_TIMERFD:
1561                                         w->opentimerfds++;
1562                                         break;
1563
1564                                 case FILETYPE_SIGNALFD:
1565                                         w->opensignalfds++;
1566                                         break;
1567
1568                                 case FILETYPE_EVENTPOLL:
1569                                         w->openeventpolls++;
1570                                         break;
1571
1572                                 default:
1573                                         w->openother++;
1574                         }
1575                 }
1576
1577                 free(w->fds);
1578                 w->fds = NULL;
1579         }
1580 }
1581
1582 // ----------------------------------------------------------------------------
1583 // update chart dimensions
1584
1585 void show_dimensions(void)
1586 {
1587         static struct timeval last = { 0, 0 };
1588         static struct rusage me_last;
1589
1590         struct target *w;
1591         struct timeval now;
1592         struct rusage me;
1593
1594         unsigned long long usec;
1595         unsigned long long cpuuser;
1596         unsigned long long cpusyst;
1597
1598         if(!last.tv_sec) {
1599                 gettimeofday(&last, NULL);
1600                 getrusage(RUSAGE_SELF, &me_last);
1601
1602                 // the first time, give a zero to allow
1603                 // netdata calibrate to the current time
1604                 // usec = update_every * 1000000ULL;
1605                 usec = 0ULL;
1606                 cpuuser = 0;
1607                 cpusyst = 0;
1608         }
1609         else {
1610                 gettimeofday(&now, NULL);
1611                 getrusage(RUSAGE_SELF, &me);
1612
1613                 usec = usecdiff(&now, &last);
1614                 cpuuser = me.ru_utime.tv_sec * 1000000ULL + me.ru_utime.tv_usec;
1615                 cpusyst = me.ru_stime.tv_sec * 1000000ULL + me.ru_stime.tv_usec;
1616
1617                 bcopy(&now, &last, sizeof(struct timeval));
1618                 bcopy(&me, &me_last, sizeof(struct rusage));
1619         }
1620
1621         fprintf(stdout, "BEGIN apps.cpu %llu\n", usec);
1622         for (w = target_root; w ; w = w->next) {
1623                 if(w->target || (!w->processes && !w->exposed)) continue;
1624
1625                 fprintf(stdout, "SET %s = %llu\n", w->name, w->utime + w->stime + w->fix_utime + w->fix_stime);
1626         }
1627         fprintf(stdout, "END\n");
1628
1629         fprintf(stdout, "BEGIN apps.cpu_user %llu\n", usec);
1630         for (w = target_root; w ; w = w->next) {
1631                 if(w->target || (!w->processes && !w->exposed)) continue;
1632
1633                 fprintf(stdout, "SET %s = %llu\n", w->name, w->utime + w->fix_utime);
1634         }
1635         fprintf(stdout, "END\n");
1636
1637         fprintf(stdout, "BEGIN apps.cpu_system %llu\n", usec);
1638         for (w = target_root; w ; w = w->next) {
1639                 if(w->target || (!w->processes && !w->exposed)) continue;
1640
1641                 fprintf(stdout, "SET %s = %llu\n", w->name, w->stime + w->fix_stime);
1642         }
1643         fprintf(stdout, "END\n");
1644
1645         fprintf(stdout, "BEGIN apps.threads %llu\n", usec);
1646         for (w = target_root; w ; w = w->next) {
1647                 if(w->target || (!w->processes && !w->exposed)) continue;
1648
1649                 fprintf(stdout, "SET %s = %llu\n", w->name, w->num_threads);
1650         }
1651         fprintf(stdout, "END\n");
1652
1653         fprintf(stdout, "BEGIN apps.processes %llu\n", usec);
1654         for (w = target_root; w ; w = w->next) {
1655                 if(w->target || (!w->processes && !w->exposed)) continue;
1656
1657                 fprintf(stdout, "SET %s = %lu\n", w->name, w->processes);
1658         }
1659         fprintf(stdout, "END\n");
1660
1661         fprintf(stdout, "BEGIN apps.mem %llu\n", usec);
1662         for (w = target_root; w ; w = w->next) {
1663                 if(w->target || (!w->processes && !w->exposed)) continue;
1664
1665                 fprintf(stdout, "SET %s = %lld\n", w->name, (long long)w->statm_resident - (long long)w->statm_share);
1666         }
1667         fprintf(stdout, "END\n");
1668
1669         fprintf(stdout, "BEGIN apps.minor_faults %llu\n", usec);
1670         for (w = target_root; w ; w = w->next) {
1671                 if(w->target || (!w->processes && !w->exposed)) continue;
1672
1673                 fprintf(stdout, "SET %s = %llu\n", w->name, w->minflt + w->fix_minflt);
1674         }
1675         fprintf(stdout, "END\n");
1676
1677         fprintf(stdout, "BEGIN apps.major_faults %llu\n", usec);
1678         for (w = target_root; w ; w = w->next) {
1679                 if(w->target || (!w->processes && !w->exposed)) continue;
1680
1681                 fprintf(stdout, "SET %s = %llu\n", w->name, w->majflt + w->fix_majflt);
1682         }
1683         fprintf(stdout, "END\n");
1684
1685         fprintf(stdout, "BEGIN apps.lreads %llu\n", usec);
1686         for (w = target_root; w ; w = w->next) {
1687                 if(w->target || (!w->processes && !w->exposed)) continue;
1688
1689                 fprintf(stdout, "SET %s = %llu\n", w->name, w->io_logical_bytes_read);
1690         }
1691         fprintf(stdout, "END\n");
1692
1693         fprintf(stdout, "BEGIN apps.lwrites %llu\n", usec);
1694         for (w = target_root; w ; w = w->next) {
1695                 if(w->target || (!w->processes && !w->exposed)) continue;
1696
1697                 fprintf(stdout, "SET %s = %llu\n", w->name, w->io_logical_bytes_written);
1698         }
1699         fprintf(stdout, "END\n");
1700
1701         fprintf(stdout, "BEGIN apps.preads %llu\n", usec);
1702         for (w = target_root; w ; w = w->next) {
1703                 if(w->target || (!w->processes && !w->exposed)) continue;
1704
1705                 fprintf(stdout, "SET %s = %llu\n", w->name, w->io_storage_bytes_read);
1706         }
1707         fprintf(stdout, "END\n");
1708
1709         fprintf(stdout, "BEGIN apps.pwrites %llu\n", usec);
1710         for (w = target_root; w ; w = w->next) {
1711                 if(w->target || (!w->processes && !w->exposed)) continue;
1712
1713                 fprintf(stdout, "SET %s = %llu\n", w->name, w->io_storage_bytes_written);
1714         }
1715         fprintf(stdout, "END\n");
1716
1717         fprintf(stdout, "BEGIN apps.files %llu\n", usec);
1718         for (w = target_root; w ; w = w->next) {
1719                 if(w->target || (!w->processes && !w->exposed)) continue;
1720
1721                 fprintf(stdout, "SET %s = %llu\n", w->name, w->openfiles);
1722         }
1723         fprintf(stdout, "END\n");
1724
1725         fprintf(stdout, "BEGIN apps.sockets %llu\n", usec);
1726         for (w = target_root; w ; w = w->next) {
1727                 if(w->target || (!w->processes && !w->exposed)) continue;
1728
1729                 fprintf(stdout, "SET %s = %llu\n", w->name, w->opensockets);
1730         }
1731         fprintf(stdout, "END\n");
1732
1733         fprintf(stdout, "BEGIN apps.pipes %llu\n", usec);
1734         for (w = target_root; w ; w = w->next) {
1735                 if(w->target || (!w->processes && !w->exposed)) continue;
1736
1737                 fprintf(stdout, "SET %s = %llu\n", w->name, w->openpipes);
1738         }
1739         fprintf(stdout, "END\n");
1740
1741         fprintf(stdout, "BEGIN netdata.apps_cpu %llu\n", usec);
1742         fprintf(stdout, "SET user = %llu\n", cpuuser);
1743         fprintf(stdout, "SET system = %llu\n", cpusyst);
1744         fprintf(stdout, "END\n");
1745
1746         fprintf(stdout, "BEGIN netdata.apps_files %llu\n", usec);
1747         fprintf(stdout, "SET files = %llu\n", file_counter);
1748         fprintf(stdout, "SET pids = %ld\n", all_pids_count);
1749         fprintf(stdout, "SET fds = %d\n", all_files_len);
1750         fprintf(stdout, "SET targets = %ld\n", targets);
1751         fprintf(stdout, "END\n");
1752
1753         fflush(stdout);
1754 }
1755
1756
1757 // ----------------------------------------------------------------------------
1758 // generate the charts
1759
1760 void show_charts(void)
1761 {
1762         struct target *w;
1763         int newly_added = 0;
1764
1765         for(w = target_root ; w ; w = w->next)
1766                 if(!w->exposed && w->processes) {
1767                         newly_added++;
1768                         w->exposed = 1;
1769                         if(debug || w->debug) fprintf(stderr, "apps.plugin: %s just added - regenerating charts.\n", w->name);
1770                 }
1771
1772         // nothing more to show
1773         if(!newly_added) return;
1774
1775         // we have something new to show
1776         // update the charts
1777         fprintf(stdout, "CHART apps.cpu '' 'Apps CPU Time (%ld%% = %ld core%s)' 'cpu time %%' cpu apps.cpu stacked 20001 %d\n", (processors * 100), processors, (processors>1)?"s":"", update_every);
1778         for (w = target_root; w ; w = w->next) {
1779                 if(w->target || (!w->processes && !w->exposed)) continue;
1780
1781                 fprintf(stdout, "DIMENSION %s '' incremental 100 %llu %s\n", w->name, Hertz, w->hidden ? "hidden,noreset" : "noreset");
1782         }
1783
1784         fprintf(stdout, "CHART apps.mem '' 'Apps Dedicated Memory (w/o shared)' 'MB' mem apps.mem stacked 20003 %d\n", update_every);
1785         for (w = target_root; w ; w = w->next) {
1786                 if(w->target || (!w->processes && !w->exposed)) continue;
1787
1788                 fprintf(stdout, "DIMENSION %s '' absolute %ld %ld noreset\n", w->name, sysconf(_SC_PAGESIZE), 1024L*1024L);
1789         }
1790
1791         fprintf(stdout, "CHART apps.threads '' 'Apps Threads' 'threads' processes apps.threads stacked 20005 %d\n", update_every);
1792         for (w = target_root; w ; w = w->next) {
1793                 if(w->target || (!w->processes && !w->exposed)) continue;
1794
1795                 fprintf(stdout, "DIMENSION %s '' absolute 1 1 noreset\n", w->name);
1796         }
1797
1798         fprintf(stdout, "CHART apps.processes '' 'Apps Processes' 'processes' processes apps.processes stacked 20004 %d\n", update_every);
1799         for (w = target_root; w ; w = w->next) {
1800                 if(w->target || (!w->processes && !w->exposed)) continue;
1801
1802                 fprintf(stdout, "DIMENSION %s '' absolute 1 1 noreset\n", w->name);
1803         }
1804
1805         fprintf(stdout, "CHART apps.cpu_user '' 'Apps CPU User Time (%ld%% = %ld core%s)' 'cpu time %%' cpu apps.cpu_user stacked 20020 %d\n", (processors * 100), processors, (processors>1)?"s":"", update_every);
1806         for (w = target_root; w ; w = w->next) {
1807                 if(w->target || (!w->processes && !w->exposed)) continue;
1808
1809                 fprintf(stdout, "DIMENSION %s '' incremental 100 %llu noreset\n", w->name, Hertz * processors);
1810         }
1811
1812         fprintf(stdout, "CHART apps.cpu_system '' 'Apps CPU System Time (%ld%% = %ld core%s)' 'cpu time %%' cpu apps.cpu_system stacked 20021 %d\n", (processors * 100), processors, (processors>1)?"s":"", update_every);
1813         for (w = target_root; w ; w = w->next) {
1814                 if(w->target || (!w->processes && !w->exposed)) continue;
1815
1816                 fprintf(stdout, "DIMENSION %s '' incremental 100 %llu noreset\n", w->name, Hertz * processors);
1817         }
1818
1819         fprintf(stdout, "CHART apps.major_faults '' 'Apps Major Page Faults (swap read)' 'page faults/s' swap apps.major_faults stacked 20010 %d\n", update_every);
1820         for (w = target_root; w ; w = w->next) {
1821                 if(w->target || (!w->processes && !w->exposed)) continue;
1822
1823                 fprintf(stdout, "DIMENSION %s '' incremental 1 1 noreset\n", w->name);
1824         }
1825
1826         fprintf(stdout, "CHART apps.minor_faults '' 'Apps Minor Page Faults' 'page faults/s' mem apps.minor_faults stacked 20011 %d\n", update_every);
1827         for (w = target_root; w ; w = w->next) {
1828                 if(w->target || (!w->processes && !w->exposed)) continue;
1829
1830                 fprintf(stdout, "DIMENSION %s '' incremental 1 1 noreset\n", w->name);
1831         }
1832
1833         fprintf(stdout, "CHART apps.lreads '' 'Apps Disk Logical Reads' 'kilobytes/s' disk apps.lreads stacked 20042 %d\n", update_every);
1834         for (w = target_root; w ; w = w->next) {
1835                 if(w->target || (!w->processes && !w->exposed)) continue;
1836
1837                 fprintf(stdout, "DIMENSION %s '' incremental 1 %d noreset\n", w->name, 1024);
1838         }
1839
1840         fprintf(stdout, "CHART apps.lwrites '' 'Apps I/O Logical Writes' 'kilobytes/s' disk apps.lwrites stacked 20042 %d\n", update_every);
1841         for (w = target_root; w ; w = w->next) {
1842                 if(w->target || (!w->processes && !w->exposed)) continue;
1843
1844                 fprintf(stdout, "DIMENSION %s '' incremental 1 %d noreset\n", w->name, 1024);
1845         }
1846
1847         fprintf(stdout, "CHART apps.preads '' 'Apps Disk Reads' 'kilobytes/s' disk apps.preads stacked 20002 %d\n", update_every);
1848         for (w = target_root; w ; w = w->next) {
1849                 if(w->target || (!w->processes && !w->exposed)) continue;
1850
1851                 fprintf(stdout, "DIMENSION %s '' incremental 1 %d noreset\n", w->name, 1024);
1852         }
1853
1854         fprintf(stdout, "CHART apps.pwrites '' 'Apps Disk Writes' 'kilobytes/s' disk apps.pwrites stacked 20002 %d\n", update_every);
1855         for (w = target_root; w ; w = w->next) {
1856                 if(w->target || (!w->processes && !w->exposed)) continue;
1857
1858                 fprintf(stdout, "DIMENSION %s '' incremental 1 %d noreset\n", w->name, 1024);
1859         }
1860
1861         fprintf(stdout, "CHART apps.files '' 'Apps Open Files' 'open files' disk apps.files stacked 20050 %d\n", update_every);
1862         for (w = target_root; w ; w = w->next) {
1863                 if(w->target || (!w->processes && !w->exposed)) continue;
1864
1865                 fprintf(stdout, "DIMENSION %s '' absolute 1 1 noreset\n", w->name);
1866         }
1867
1868         fprintf(stdout, "CHART apps.sockets '' 'Apps Open Sockets' 'open sockets' net apps.sockets stacked 20051 %d\n", update_every);
1869         for (w = target_root; w ; w = w->next) {
1870                 if(w->target || (!w->processes && !w->exposed)) continue;
1871
1872                 fprintf(stdout, "DIMENSION %s '' absolute 1 1 noreset\n", w->name);
1873         }
1874
1875         fprintf(stdout, "CHART apps.pipes '' 'Apps Pipes' 'open pipes' processes apps.pipes stacked 20053 %d\n", update_every);
1876         for (w = target_root; w ; w = w->next) {
1877                 if(w->target || (!w->processes && !w->exposed)) continue;
1878
1879                 fprintf(stdout, "DIMENSION %s '' absolute 1 1 noreset\n", w->name);
1880         }
1881
1882         fprintf(stdout, "CHART netdata.apps_cpu '' 'Apps Plugin CPU' 'milliseconds/s' apps.plugin netdata.apps_cpu stacked 140000 %d\n", update_every);
1883         fprintf(stdout, "DIMENSION user '' incremental 1 %d\n", 1000);
1884         fprintf(stdout, "DIMENSION system '' incremental 1 %d\n", 1000);
1885
1886         fprintf(stdout, "CHART netdata.apps_files '' 'Apps Plugin Files' 'files/s' apps.plugin netdata.apps_files line 140001 %d\n", update_every);
1887         fprintf(stdout, "DIMENSION files '' incremental 1 1\n");
1888         fprintf(stdout, "DIMENSION pids '' absolute 1 1\n");
1889         fprintf(stdout, "DIMENSION fds '' absolute 1 1\n");
1890         fprintf(stdout, "DIMENSION targets '' absolute 1 1\n");
1891
1892         fflush(stdout);
1893 }
1894
1895
1896 // ----------------------------------------------------------------------------
1897 // parse command line arguments
1898
1899 void parse_args(int argc, char **argv)
1900 {
1901         int i, freq = 0;
1902         char *name = NULL;
1903
1904         for(i = 1; i < argc; i++) {
1905                 if(!freq) {
1906                         int n = atoi(argv[i]);
1907                         if(n > 0) {
1908                                 freq = n;
1909                                 continue;
1910                         }
1911                 }
1912
1913                 if(strcmp("debug", argv[i]) == 0) {
1914                         debug = 1;
1915                         debug_flags = 0xffffffff;
1916                         continue;
1917                 }
1918
1919                 if(!name) {
1920                         name = argv[i];
1921                         continue;
1922                 }
1923
1924                 error("Cannot understand option %s", argv[i]);
1925                 exit(1);
1926         }
1927
1928         if(freq > 0) update_every = freq;
1929         if(!name) name = "groups";
1930
1931         if(read_process_groups(name)) {
1932                 error("Cannot read process groups %s", name);
1933                 exit(1);
1934         }
1935 }
1936
1937 int main(int argc, char **argv)
1938 {
1939         // debug_flags = D_PROCFILE;
1940
1941         // set the name for logging
1942         program_name = "apps.plugin";
1943
1944         host_prefix = getenv("NETDATA_HOST_PREFIX");
1945         if(host_prefix == NULL) {
1946                 info("NETDATA_HOST_PREFIX is not passed from netdata");
1947                 host_prefix = "";
1948         }
1949         else info("Found NETDATA_HOST_PREFIX='%s'", host_prefix);
1950
1951         config_dir = getenv("NETDATA_CONFIG_DIR");
1952         if(config_dir == NULL) {
1953                 info("NETDATA_CONFIG_DIR is not passed from netdata");
1954                 config_dir = CONFIG_DIR;
1955         }
1956         else info("Found NETDATA_CONFIG_DIR='%s'", config_dir);
1957
1958         info("starting...");
1959
1960         procfile_adaptive_initial_allocation = 1;
1961
1962         time_t started_t = time(NULL);
1963         time_t current_t;
1964         Hertz = get_hertz();
1965         pid_max = get_pid_max();
1966         processors = get_processors();
1967
1968         parse_args(argc, argv);
1969
1970         all_pids = calloc(sizeof(struct pid_stat *), (size_t) pid_max);
1971         if(!all_pids) {
1972                 error("Cannot allocate %lu bytes of memory.", sizeof(struct pid_stat *) * pid_max);
1973                 printf("DISABLE\n");
1974                 exit(1);
1975         }
1976
1977         unsigned long long counter = 1;
1978         unsigned long long usec = 0, susec = 0;
1979         struct timeval last, now;
1980         gettimeofday(&last, NULL);
1981
1982         for(;1; counter++) {
1983                 if(!update_from_proc()) {
1984                         error("Cannot allocate %lu bytes of memory.", sizeof(struct pid_stat *) * pid_max);
1985                         printf("DISABLE\n");
1986                         exit(1);
1987                 }
1988
1989                 update_statistics();
1990                 show_charts();          // this is smart enough to show only newly added apps, when needed
1991                 show_dimensions();
1992
1993                 if(debug) fprintf(stderr, "apps.plugin: done Loop No %llu\n", counter);
1994                 fflush(NULL);
1995
1996                 gettimeofday(&now, NULL);
1997                 usec = usecdiff(&now, &last) - susec;
1998                 if(debug) fprintf(stderr, "apps.plugin: last loop took %llu usec (worked for %llu, sleeped for %llu).\n", usec + susec, usec, susec);
1999
2000                 // if the last loop took less than half the time
2001                 // wait the rest of the time
2002                 if(usec < (update_every * 1000000ULL / 2)) susec = (update_every * 1000000ULL) - usec;
2003                 else susec = update_every * 1000000ULL / 2;
2004
2005                 usleep((useconds_t) susec);
2006                 bcopy(&now, &last, sizeof(struct timeval));
2007
2008                 // restart once per day (14400 seconds)
2009                 current_t = time(NULL);
2010                 if(current_t - started_t > 14400) exit(0);
2011         }
2012 }