src/plugin_tc.c

   1 #ifdef HAVE_CONFIG_H
   2 #include <config.h>
   3 #endif
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <sys/types.h>
   8 #include <sys/resource.h>
   9
  10 #include "avl.h"
  11 #include "log.h"
  12 #include "common.h"
  13 #include "appconfig.h"
  14 #include "rrd.h"
  15 #include "popen.h"
  16 #include "plugin_tc.h"
  17 #include "main.h"
  18 #include "../config.h"
  19
  20 #define RRD_TYPE_TC                                     "tc"
  21 #define RRD_TYPE_TC_LEN                         strlen(RRD_TYPE_TC)
  22
  23 // ----------------------------------------------------------------------------
  24 // /sbin/tc processor
  25 // this requires the script plugins.d/tc-qos-helper.sh
  26
  27 #define TC_LINE_MAX 1024
  28
  29 struct tc_class {
  30         avl avl;
  31
  32         char *id;
  33         uint32_t hash;
  34
  35         char *name;
  36
  37         char *leafid;
  38         uint32_t leaf_hash;
  39
  40         char *parentid;
  41         uint32_t parent_hash;
  42
  43         char hasparent;
  44         char isleaf;
  45         unsigned long long bytes;
  46         unsigned long long packets;
  47         unsigned long long dropped;
  48         unsigned long long overlimits;
  49         unsigned long long requeues;
  50         unsigned long long lended;
  51         unsigned long long borrowed;
  52         unsigned long long giants;
  53         unsigned long long tokens;
  54         unsigned long long ctokens;
  55
  56         char updated;   // updated bytes
  57         char seen;              // seen in the tc list (even without bytes)
  58
  59         struct tc_class *next;
  60         struct tc_class *prev;
  61 };
  62
  63 struct tc_device {
  64         avl avl;
  65
  66         char *id;
  67         uint32_t hash;
  68
  69         char *name;
  70         char *family;
  71
  72         avl_tree classes_index;
  73
  74         struct tc_class *classes;
  75
  76         struct tc_device *next;
  77         struct tc_device *prev;
  78 };
  79
  80
  81 struct tc_device *tc_device_root = NULL;
  82
  83 // ----------------------------------------------------------------------------
  84 // tc_device index
  85
  86 static int tc_device_iterator(avl *a) { if(a) {}; return 0; }
  87
  88 static int tc_device_compare(void* a, void* b) {
  89         if(((struct tc_device *)a)->hash < ((struct tc_device *)b)->hash) return -1;
  90         else if(((struct tc_device *)a)->hash > ((struct tc_device *)b)->hash) return 1;
  91         else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id);
  92 }
  93
  94 avl_tree tc_device_root_index = {
  95                 NULL,
  96                 tc_device_compare
  97 };
  98
  99 #define tc_device_index_add(st) avl_insert(&tc_device_root_index, (avl *)(st))
 100 #define tc_device_index_del(st) avl_remove(&tc_device_root_index, (avl *)(st))
 101
 102 static inline struct tc_device *tc_device_index_find(const char *id, uint32_t hash) {
 103         struct tc_device *result = NULL, tmp;
 104         tmp.id = (char *)id;
 105         tmp.hash = (hash)?hash:simple_hash(tmp.id);
 106
 107         avl_search(&(tc_device_root_index), (avl *) &tmp, tc_device_iterator, (avl **) &result);
 108         return result;
 109 }
 110
 111
 112 // ----------------------------------------------------------------------------
 113 // tc_class index
 114
 115 static int tc_class_iterator(avl *a) { if(a) {}; return 0; }
 116
 117 static int tc_class_compare(void* a, void* b) {
 118         if(((struct tc_class *)a)->hash < ((struct tc_class *)b)->hash) return -1;
 119         else if(((struct tc_class *)a)->hash > ((struct tc_class *)b)->hash) return 1;
 120         else return strcmp(((struct tc_class *)a)->id, ((struct tc_class *)b)->id);
 121 }
 122
 123 #define tc_class_index_add(st, rd) avl_insert(&((st)->classes_index), (avl *)(rd))
 124 #define tc_class_index_del(st, rd) avl_remove(&((st)->classes_index), (avl *)(rd))
 125
 126 static inline struct tc_class *tc_class_index_find(struct tc_device *st, const char *id, uint32_t hash) {
 127         struct tc_class *result = NULL, tmp;
 128         tmp.id = (char *)id;
 129         tmp.hash = (hash)?hash:simple_hash(tmp.id);
 130
 131         avl_search(&(st->classes_index), (avl *) &tmp, tc_class_iterator, (avl **) &result);
 132         return result;
 133 }
 134
 135 // ----------------------------------------------------------------------------
 136
 137 static inline void tc_class_free(struct tc_device *n, struct tc_class *c) {
 138         debug(D_TC_LOOP, "Removing from device '%s' class '%s', parentid '%s', leafid '%s', seen=%d", n->id, c->id, c->parentid?c->parentid:"", c->leafid?c->leafid:"", c->seen);
 139
 140         if(c->next) c->next->prev = c->prev;
 141         if(c->prev) c->prev->next = c->next;
 142         if(n->classes == c) {
 143                 if(c->next) n->classes = c->next;
 144                 else n->classes = c->prev;
 145         }
 146
 147         tc_class_index_del(n, c);
 148
 149         if(c->id) free(c->id);
 150         if(c->name) free(c->name);
 151         if(c->leafid) free(c->leafid);
 152         if(c->parentid) free(c->parentid);
 153
 154         free(c);
 155 }
 156
 157 static inline void tc_device_classes_cleanup(struct tc_device *d) {
 158         static int cleanup_every = 999;
 159
 160         if(cleanup_every > 0) {
 161                 cleanup_every = (int) -config_get_number("plugin:tc", "cleanup unused classes every", 60);
 162                 if(cleanup_every > 0) cleanup_every = -cleanup_every;
 163                 if(cleanup_every == 0) cleanup_every = -1;
 164         }
 165
 166         struct tc_class *c = d->classes;
 167         while(c) {
 168                 if(c->seen < cleanup_every) {
 169                         struct tc_class *nc = c->next;
 170                         tc_class_free(d, c);
 171                         c = nc;
 172                 }
 173                 else c = c->next;
 174
 175                 if(c) {
 176                         c->updated = 0;
 177                         c->seen--;
 178                 }
 179         }
 180 }
 181
 182 static inline void tc_device_commit(struct tc_device *d)
 183 {
 184         static int enable_new_interfaces = -1;
 185
 186         if(enable_new_interfaces == -1) enable_new_interfaces = config_get_boolean("plugin:tc", "enable new interfaces detected at runtime", 1);
 187
 188         // we only need to add leaf classes
 189         struct tc_class *c, *x;
 190
 191         // set all classes
 192         for(c = d->classes ; c ; c = c->next) {
 193                 c->isleaf = 1;
 194                 c->hasparent = 0;
 195         }
 196
 197         // mark the classes as leafs and parents
 198         for(c = d->classes ; c ; c = c->next) {
 199                 if(!c->updated) continue;
 200
 201                 for(x = d->classes ; x ; x = x->next) {
 202                         if(!x->updated) continue;
 203
 204                         if(c == x) continue;
 205
 206                         if(x->parentid && (
 207                                 (               c->hash      == x->parent_hash && strcmp(c->id,     x->parentid) == 0) ||
 208                                 (c->leafid   && c->leaf_hash == x->parent_hash && strcmp(c->leafid, x->parentid) == 0))) {
 209                                 // debug(D_TC_LOOP, "TC: In device '%s', class '%s' (leafid: '%s') has as leaf class '%s' (parentid: '%s').", d->name?d->name:d->id, c->name?c->name:c->id, c->leafid?c->leafid:c->id, x->name?x->name:x->id, x->parentid?x->parentid:x->id);
 210                                 c->isleaf = 0;
 211                                 x->hasparent = 1;
 212                         }
 213                 }
 214         }
 215
 216         // debugging:
 217         /*
 218         for ( c = d->classes ; c ; c = c->next) {
 219                 if(c->isleaf && c->hasparent) debug(D_TC_LOOP, "TC: Device %s, class %s, OK", d->name, c->id);
 220                 else debug(D_TC_LOOP, "TC: Device %s, class %s, IGNORE (isleaf: %d, hasparent: %d, parent: %s)", d->name, c->id, c->isleaf, c->hasparent, c->parentid);
 221         }
 222         */
 223
 224         // we need at least a class
 225         for(c = d->classes ; c ; c = c->next) {
 226                 // debug(D_TC_LOOP, "TC: Device '%s', class '%s', isLeaf=%d, HasParent=%d, Seen=%d", d->name?d->name:d->id, c->name?c->name:c->id, c->isleaf, c->hasparent, c->seen);
 227                 if(!c->updated) continue;
 228                 if(c->isleaf && c->hasparent) break;
 229         }
 230         if(!c) {
 231                 debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. No leaf classes.", d->name?d->name:d->id);
 232                 tc_device_classes_cleanup(d);
 233                 return;
 234         }
 235
 236         char var_name[CONFIG_MAX_NAME + 1];
 237         snprintf(var_name, CONFIG_MAX_NAME, "qos for %s", d->id);
 238         if(config_get_boolean("plugin:tc", var_name, enable_new_interfaces)) {
 239                 RRDSET *st = rrdset_find_bytype(RRD_TYPE_TC, d->id);
 240                 if(!st) {
 241                         debug(D_TC_LOOP, "TC: Creating new chart for device '%s'", d->name?d->name:d->id);
 242
 243                         st = rrdset_create(RRD_TYPE_TC, d->id, d->name?d->name:d->id, d->family?d->family:d->id, RRD_TYPE_TC ".qos", "Class Usage", "kilobits/s", 7000, rrd_update_every, RRDSET_TYPE_STACKED);
 244
 245                         for(c = d->classes ; c ; c = c->next) {
 246                                 if(!c->updated) continue;
 247
 248                                 if(c->isleaf && c->hasparent)
 249                                         rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 250                         }
 251                 }
 252                 else {
 253                         debug(D_TC_LOOP, "TC: Updating chart for device '%s'", d->name?d->name:d->id);
 254                         rrdset_next_plugins(st);
 255
 256                         if(d->name && strcmp(d->id, d->name) != 0) rrdset_set_name(st, d->name);
 257                 }
 258
 259                 for(c = d->classes ; c ; c = c->next) {
 260                         if(!c->updated) continue;
 261
 262                         if(c->isleaf && c->hasparent) {
 263                                 RRDDIM *rd = rrddim_find(st, c->id);
 264
 265                                 if(!rd) {
 266                                         debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s'", st->id, c->id, c->name);
 267
 268                                         // new class, we have to add it
 269                                         rd = rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 270                                 }
 271                                 else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", st->id, c->id);
 272
 273                                 rrddim_set_by_pointer(st, rd, c->bytes);
 274
 275                                 // if it has a name, different to the id
 276                                 if(c->name) {
 277                                         // update the rrd dimension with the new name
 278                                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", st->id, rd->id, c->name);
 279                                         rrddim_set_name(st, rd, c->name);
 280
 281                                         free(c->name);
 282                                         c->name = NULL;
 283                                 }
 284                         }
 285                 }
 286                 rrdset_done(st);
 287         }
 288
 289         tc_device_classes_cleanup(d);
 290 }
 291
 292 static inline void tc_device_set_class_name(struct tc_device *d, char *id, char *name)
 293 {
 294         struct tc_class *c = tc_class_index_find(d, id, 0);
 295         if(c) {
 296                 if(c->name) free(c->name);
 297                 c->name = NULL;
 298
 299                 if(name && *name && strcmp(c->id, name) != 0) {
 300                         debug(D_TC_LOOP, "TC: Setting device '%s', class '%s' name to '%s'", d->id, id, name);
 301                         c->name = strdup(name);
 302                 }
 303         }
 304 }
 305
 306 static inline void tc_device_set_device_name(struct tc_device *d, char *name) {
 307         if(d->name) free(d->name);
 308         d->name = NULL;
 309
 310         if(name && *name && strcmp(d->id, name) != 0) {
 311                 debug(D_TC_LOOP, "TC: Setting device '%s' name to '%s'", d->id, name);
 312                 d->name = strdup(name);
 313         }
 314 }
 315
 316 static inline void tc_device_set_device_family(struct tc_device *d, char *family) {
 317         if(d->family) free(d->family);
 318         d->family = NULL;
 319
 320         if(family && *family && strcmp(d->id, family) != 0) {
 321                 debug(D_TC_LOOP, "TC: Setting device '%s' family to '%s'", d->id, family);
 322                 d->family = strdup(family);
 323         }
 324         // no need for null termination - it is already null
 325 }
 326
 327 static inline struct tc_device *tc_device_create(char *id)
 328 {
 329         struct tc_device *d = tc_device_index_find(id, 0);
 330
 331         if(!d) {
 332                 debug(D_TC_LOOP, "TC: Creating device '%s'", id);
 333
 334                 d = calloc(1, sizeof(struct tc_device));
 335                 if(!d) {
 336                         fatal("Cannot allocate memory for tc_device %s", id);
 337                         return NULL;
 338                 }
 339
 340                 d->id = strdup(id);
 341                 d->hash = simple_hash(d->id);
 342
 343                 avl_init(&d->classes_index, tc_class_compare);
 344                 tc_device_index_add(d);
 345
 346                 if(!tc_device_root) {
 347                         tc_device_root = d;
 348                 }
 349                 else {
 350                         d->next = tc_device_root;
 351                         tc_device_root->prev = d;
 352                         tc_device_root = d;
 353                 }
 354         }
 355
 356         return(d);
 357 }
 358
 359 static inline struct tc_class *tc_class_add(struct tc_device *n, char *id, char *parentid, char *leafid)
 360 {
 361         struct tc_class *c = tc_class_index_find(n, id, 0);
 362
 363         if(!c) {
 364                 debug(D_TC_LOOP, "TC: Creating in device '%s', class id '%s', parentid '%s', leafid '%s'", n->id, id, parentid?parentid:"", leafid?leafid:"");
 365
 366                 c = calloc(1, sizeof(struct tc_class));
 367                 if(!c) {
 368                         fatal("Cannot allocate memory for tc class");
 369                         return NULL;
 370                 }
 371
 372                 if(n->classes) n->classes->prev = c;
 373                 c->next = n->classes;
 374                 n->classes = c;
 375
 376                 c->id = strdup(id);
 377                 if(!c->id) {
 378                         free(c);
 379                         return NULL;
 380                 }
 381                 c->hash = simple_hash(c->id);
 382
 383                 if(parentid && *parentid) {
 384                         c->parentid = strdup(parentid);
 385                         c->parent_hash = simple_hash(c->parentid);
 386                 }
 387
 388                 if(leafid && *leafid) {
 389                         c->leafid = strdup(leafid);
 390                         c->leaf_hash = simple_hash(c->leafid);
 391                 }
 392
 393                 tc_class_index_add(n, c);
 394         }
 395
 396         c->seen = 1;
 397
 398         return(c);
 399 }
 400
 401 static inline void tc_device_free(struct tc_device *n)
 402 {
 403         if(n->next) n->next->prev = n->prev;
 404         if(n->prev) n->prev->next = n->next;
 405         if(tc_device_root == n) {
 406                 if(n->next) tc_device_root = n->next;
 407                 else tc_device_root = n->prev;
 408         }
 409
 410         tc_device_index_del(n);
 411
 412         while(n->classes) tc_class_free(n, n->classes);
 413
 414         if(n->id) free(n->id);
 415         if(n->name) free(n->name);
 416         if(n->family) free(n->family);
 417
 418         free(n);
 419 }
 420
 421 static inline void tc_device_free_all()
 422 {
 423         while(tc_device_root)
 424                 tc_device_free(tc_device_root);
 425 }
 426
 427 #define MAX_WORDS 20
 428
 429 static inline int tc_space(char c) {
 430         switch(c) {
 431         case ' ':
 432         case '\t':
 433         case '\r':
 434         case '\n':
 435                 return 1;
 436
 437         default:
 438                 return 0;
 439         }
 440 }
 441
 442 static inline void tc_split_words(char *str, char **words, int max_words) {
 443         char *s = str;
 444         int i = 0;
 445
 446         // skip all white space
 447         while(tc_space(*s)) s++;
 448
 449         // store the first word
 450         words[i++] = s;
 451
 452         // while we have something
 453         while(*s) {
 454                 // if it is a space
 455                 if(tc_space(*s)) {
 456
 457                         // terminate the word
 458                         *s++ = '\0';
 459
 460                         // skip all white space
 461                         while(tc_space(*s)) s++;
 462
 463                         // if we reached the end, stop
 464                         if(!*s) break;
 465
 466                         // store the next word
 467                         if(i < max_words) words[i++] = s;
 468                         else break;
 469                 }
 470                 else s++;
 471         }
 472
 473         // terminate the words
 474         while(i < max_words) words[i++] = NULL;
 475 }
 476
 477 pid_t tc_child_pid = 0;
 478 void *tc_main(void *ptr)
 479 {
 480         if(ptr) { ; }
 481
 482         info("TC thread created with task id %d", gettid());
 483
 484         if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
 485                 error("Cannot set pthread cancel type to DEFERRED.");
 486
 487         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 488                 error("Cannot set pthread cancel state to ENABLE.");
 489
 490         struct rusage thread;
 491         RRDSET *stcpu = NULL, *sttime = NULL;
 492
 493         char buffer[TC_LINE_MAX+1] = "";
 494         char *words[MAX_WORDS] = { NULL };
 495
 496         uint32_t BEGIN_HASH = simple_hash("BEGIN");
 497         uint32_t END_HASH = simple_hash("END");
 498         uint32_t CLASS_HASH = simple_hash("class");
 499         uint32_t SENT_HASH = simple_hash("Sent");
 500         uint32_t LENDED_HASH = simple_hash("lended:");
 501         uint32_t TOKENS_HASH = simple_hash("tokens:");
 502         uint32_t SETDEVICENAME_HASH = simple_hash("SETDEVICENAME");
 503         uint32_t SETDEVICEGROUP_HASH = simple_hash("SETDEVICEGROUP");
 504         uint32_t SETCLASSNAME_HASH = simple_hash("SETCLASSNAME");
 505         uint32_t WORKTIME_HASH = simple_hash("WORKTIME");
 506 #ifdef DETACH_PLUGINS_FROM_NETDATA
 507         uint32_t MYPID_HASH = simple_hash("MYPID");
 508 #endif
 509         uint32_t first_hash;
 510
 511         for(;1;) {
 512                 if(unlikely(netdata_exit)) break;
 513
 514                 FILE *fp;
 515                 struct tc_device *device = NULL;
 516                 struct tc_class *class = NULL;
 517
 518                 snprintf(buffer, TC_LINE_MAX, "exec %s %d", config_get("plugin:tc", "script to run to get tc values", PLUGINS_DIR "/tc-qos-helper.sh"), rrd_update_every);
 519                 debug(D_TC_LOOP, "executing '%s'", buffer);
 520                 // fp = popen(buffer, "r");
 521                 fp = mypopen(buffer, &tc_child_pid);
 522                 if(!fp) {
 523                         error("TC: Cannot popen(\"%s\", \"r\").", buffer);
 524                         pthread_exit(NULL);
 525                         return NULL;
 526                 }
 527
 528                 while(fgets(buffer, TC_LINE_MAX, fp) != NULL) {
 529                         if(unlikely(netdata_exit)) break;
 530
 531                         buffer[TC_LINE_MAX] = '\0';
 532                         // debug(D_TC_LOOP, "TC: read '%s'", buffer);
 533
 534                         tc_split_words(buffer, words, MAX_WORDS);
 535                         if(!words[0] || !*words[0]) {
 536                                 // debug(D_TC_LOOP, "empty line");
 537                                 continue;
 538                         }
 539                         // else debug(D_TC_LOOP, "First word is '%s'", words[0]);
 540
 541                         first_hash = simple_hash(words[0]);
 542
 543                         if(device && first_hash == CLASS_HASH && strcmp(words[0], "class") == 0) {
 544                                 // debug(D_TC_LOOP, "CLASS line on class id='%s', parent='%s', parentid='%s', leaf='%s', leafid='%s'", words[2], words[3], words[4], words[5], words[6]);
 545
 546                                 // clear the last class
 547                                 class = NULL;
 548
 549                                 // words[1] : class type
 550                                 // words[2] : N:XX
 551                                 // words[3] : parent or root
 552                                 if(words[1] && words[2] && words[3] && (strcmp(words[3], "parent") == 0 || strcmp(words[3], "root") == 0)) {
 553                                         //char *type     = words[1];  // the class: htb, fq_codel, etc
 554
 555                                         // we are only interested for HTB classes
 556                                         //if(strcmp(type, "htb") != 0) continue;
 557
 558                                         char *id       = words[2];      // the class major:minor
 559                                         char *parent   = words[3];      // 'parent' or 'root'
 560                                         char *parentid = words[4];      // the parent's id
 561                                         char *leaf     = words[5];      // 'leaf'
 562                                         char *leafid   = words[6];      // leafid
 563
 564                                         if(strcmp(parent, "root") == 0) {
 565                                                 parentid = NULL;
 566                                                 leafid = NULL;
 567                                         }
 568                                         else if(!leaf || strcmp(leaf, "leaf") != 0)
 569                                                 leafid = NULL;
 570
 571                                         char leafbuf[20 + 1] = "";
 572                                         if(leafid && leafid[strlen(leafid) - 1] == ':') {
 573                                                 strncpy(leafbuf, leafid, 20 - 1);
 574                                                 strcat(leafbuf, "1");
 575                                                 leafid = leafbuf;
 576                                         }
 577
 578                                         class = tc_class_add(device, id, parentid, leafid);
 579                                 }
 580                         }
 581                         else if(first_hash == END_HASH && strcmp(words[0], "END") == 0) {
 582                                 // debug(D_TC_LOOP, "END line");
 583
 584                                 if(device) {
 585                                         if(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL) != 0)
 586                                                 error("Cannot set pthread cancel state to DISABLE.");
 587
 588                                         tc_device_commit(device);
 589                                         // tc_device_free(device);
 590                                         device = NULL;
 591                                         class = NULL;
 592
 593                                         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 594                                                 error("Cannot set pthread cancel state to ENABLE.");
 595                                 }
 596                         }
 597                         else if(first_hash == BEGIN_HASH && strcmp(words[0], "BEGIN") == 0) {
 598                                 // debug(D_TC_LOOP, "BEGIN line on device '%s'", words[1]);
 599
 600                                 if(device) {
 601                                         // tc_device_free(device);
 602                                         device = NULL;
 603                                         class = NULL;
 604                                 }
 605
 606                                 if(words[1] && *words[1]) {
 607                                         device = tc_device_create(words[1]);
 608                                         class = NULL;
 609                                 }
 610                         }
 611                         else if(device && class && first_hash == SENT_HASH && strcmp(words[0], "Sent") == 0) {
 612                                 // debug(D_TC_LOOP, "SENT line '%s'", words[1]);
 613                                 if(words[1] && *words[1]) {
 614                                         class->bytes = strtoull(words[1], NULL, 10);
 615                                         class->updated = 1;
 616                                 }
 617
 618                                 if(words[3] && *words[3])
 619                                         class->packets = strtoull(words[3], NULL, 10);
 620
 621                                 if(words[6] && *words[6])
 622                                         class->dropped = strtoull(words[6], NULL, 10);
 623
 624                                 if(words[8] && *words[8])
 625                                         class->overlimits = strtoull(words[8], NULL, 10);
 626
 627                                 if(words[10] && *words[10])
 628                                         class->requeues = strtoull(words[8], NULL, 10);
 629                         }
 630                         else if(device && class && class->updated && first_hash == LENDED_HASH && strcmp(words[0], "lended:") == 0) {
 631                                 // debug(D_TC_LOOP, "LENDED line '%s'", words[1]);
 632                                 if(words[1] && *words[1])
 633                                         class->lended = strtoull(words[1], NULL, 10);
 634
 635                                 if(words[3] && *words[3])
 636                                         class->borrowed = strtoull(words[3], NULL, 10);
 637
 638                                 if(words[5] && *words[5])
 639                                         class->giants = strtoull(words[5], NULL, 10);
 640                         }
 641                         else if(device && class && class->updated && first_hash == TOKENS_HASH && strcmp(words[0], "tokens:") == 0) {
 642                                 // debug(D_TC_LOOP, "TOKENS line '%s'", words[1]);
 643                                 if(words[1] && *words[1])
 644                                         class->tokens = strtoull(words[1], NULL, 10);
 645
 646                                 if(words[3] && *words[3])
 647                                         class->ctokens = strtoull(words[3], NULL, 10);
 648                         }
 649                         else if(device && first_hash == SETDEVICENAME_HASH && strcmp(words[0], "SETDEVICENAME") == 0) {
 650                                 // debug(D_TC_LOOP, "SETDEVICENAME line '%s'", words[1]);
 651                                 if(words[1] && *words[1]) tc_device_set_device_name(device, words[1]);
 652                         }
 653                         else if(device && first_hash == SETDEVICEGROUP_HASH && strcmp(words[0], "SETDEVICEGROUP") == 0) {
 654                                 // debug(D_TC_LOOP, "SETDEVICEGROUP line '%s'", words[1]);
 655                                 if(words[1] && *words[1]) tc_device_set_device_family(device, words[1]);
 656                         }
 657                         else if(device && first_hash == SETCLASSNAME_HASH && strcmp(words[0], "SETCLASSNAME") == 0) {
 658                                 // debug(D_TC_LOOP, "SETCLASSNAME line '%s' '%s'", words[1], words[2]);
 659                                 char *id    = words[1];
 660                                 char *path  = words[2];
 661                                 if(id && *id && path && *path) tc_device_set_class_name(device, id, path);
 662                         }
 663                         else if(first_hash == WORKTIME_HASH && strcmp(words[0], "WORKTIME") == 0) {
 664                                 // debug(D_TC_LOOP, "WORKTIME line '%s' '%s'", words[1], words[2]);
 665                                 getrusage(RUSAGE_THREAD, &thread);
 666
 667                                 if(!stcpu) stcpu = rrdset_find("netdata.plugin_tc_cpu");
 668                                 if(!stcpu) {
 669                                         stcpu = rrdset_create("netdata", "plugin_tc_cpu", NULL, "tc.helper", NULL, "NetData TC CPU usage", "milliseconds/s", 135000, rrd_update_every, RRDSET_TYPE_STACKED);
 670                                         rrddim_add(stcpu, "user",  NULL,  1, 1000, RRDDIM_INCREMENTAL);
 671                                         rrddim_add(stcpu, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
 672                                 }
 673                                 else rrdset_next(stcpu);
 674
 675                                 rrddim_set(stcpu, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
 676                                 rrddim_set(stcpu, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
 677                                 rrdset_done(stcpu);
 678
 679                                 if(!sttime) stcpu = rrdset_find("netdata.plugin_tc_time");
 680                                 if(!sttime) {
 681                                         sttime = rrdset_create("netdata", "plugin_tc_time", NULL, "tc.helper", NULL, "NetData TC script execution", "milliseconds/run", 135001, rrd_update_every, RRDSET_TYPE_AREA);
 682                                         rrddim_add(sttime, "run_time",  "run time",  1, 1, RRDDIM_ABSOLUTE);
 683                                 }
 684                                 else rrdset_next(sttime);
 685
 686                                 rrddim_set(sttime, "run_time", atoll(words[1]));
 687                                 rrdset_done(sttime);
 688
 689                         }
 690 #ifdef DETACH_PLUGINS_FROM_NETDATA
 691                         else if(first_hash == MYPID_HASH && (strcmp(words[0], "MYPID") == 0)) {
 692                                 // debug(D_TC_LOOP, "MYPID line '%s'", words[1]);
 693                                 char *id = words[1];
 694                                 pid_t pid = atol(id);
 695
 696                                 if(pid) tc_child_pid = pid;
 697
 698                                 debug(D_TC_LOOP, "TC: Child PID is %d.", tc_child_pid);
 699                         }
 700 #endif
 701                         //else {
 702                         //      debug(D_TC_LOOP, "IGNORED line");
 703                         //}
 704                 }
 705                 // fgets() failed or loop broke
 706                 int code = mypclose(fp, tc_child_pid);
 707                 tc_child_pid = 0;
 708
 709                 if(device) {
 710                         // tc_device_free(device);
 711                         device = NULL;
 712                         class = NULL;
 713                 }
 714
 715                 if(netdata_exit) {
 716                         tc_device_free_all();
 717                         pthread_exit(NULL);
 718                         return NULL;
 719                 }
 720
 721                 if(code == 1 || code == 127) {
 722                         // 1 = DISABLE
 723                         // 127 = cannot even run it
 724                         error("TC: tc-qos-helper.sh exited with code %d. Disabling it.", code);
 725
 726                         tc_device_free_all();
 727                         pthread_exit(NULL);
 728                         return NULL;
 729                 }
 730
 731                 sleep((unsigned int) rrd_update_every);
 732         }
 733
 734         pthread_exit(NULL);
 735         return NULL;
 736 }