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
  18 #define RRD_TYPE_TC                                     "tc"
  19 #define RRD_TYPE_TC_LEN                         strlen(RRD_TYPE_TC)
  20
  21 // ----------------------------------------------------------------------------
  22 // /sbin/tc processor
  23 // this requires the script plugins.d/tc-qos-helper.sh
  24
  25 #define TC_LINE_MAX 1024
  26
  27 struct tc_class {
  28         avl avl;
  29
  30         char *id;
  31         uint32_t hash;
  32
  33         char *name;
  34
  35         char *leafid;
  36         uint32_t leaf_hash;
  37
  38         char *parentid;
  39         uint32_t parent_hash;
  40
  41         char hasparent;
  42         char isleaf;
  43         unsigned long long bytes;
  44
  45         char updated;   // updated bytes
  46         char seen;              // seen in the tc list (even without bytes)
  47
  48         struct tc_class *next;
  49         struct tc_class *prev;
  50 };
  51
  52 struct tc_device {
  53         avl avl;
  54
  55         char *id;
  56         uint32_t hash;
  57
  58         char *name;
  59         char *family;
  60
  61         avl_tree classes_index;
  62
  63         struct tc_class *classes;
  64 };
  65
  66
  67 // ----------------------------------------------------------------------------
  68 // tc_device index
  69
  70 static int tc_device_iterator(avl *a) { if(a) {}; return 0; }
  71
  72 static int tc_device_compare(void* a, void* b) {
  73         if(((struct tc_device *)a)->hash < ((struct tc_device *)b)->hash) return -1;
  74         else if(((struct tc_device *)a)->hash > ((struct tc_device *)b)->hash) return 1;
  75         else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id);
  76 }
  77
  78 avl_tree tc_device_root_index = {
  79                 NULL,
  80                 tc_device_compare,
  81                 PTHREAD_RWLOCK_INITIALIZER
  82 };
  83
  84 #define tc_device_index_add(st) avl_insert(&tc_device_root_index, (avl *)(st))
  85 #define tc_device_index_del(st) avl_remove(&tc_device_root_index, (avl *)(st))
  86
  87 static struct tc_device *tc_device_index_find(const char *id, uint32_t hash) {
  88         struct tc_device *result = NULL, tmp;
  89         tmp.id = (char *)id;
  90         tmp.hash = (hash)?hash:simple_hash(tmp.id);
  91
  92         avl_search(&(tc_device_root_index), (avl *)&tmp, tc_device_iterator, (avl **)&result);
  93         return result;
  94 }
  95
  96
  97 // ----------------------------------------------------------------------------
  98 // tc_class index
  99
 100 static int tc_class_iterator(avl *a) { if(a) {}; return 0; }
 101
 102 static int tc_class_compare(void* a, void* b) {
 103         if(((struct tc_class *)a)->hash < ((struct tc_class *)b)->hash) return -1;
 104         else if(((struct tc_class *)a)->hash > ((struct tc_class *)b)->hash) return 1;
 105         else return strcmp(((struct tc_class *)a)->id, ((struct tc_class *)b)->id);
 106 }
 107
 108 #define tc_class_index_add(st, rd) avl_insert(&((st)->classes_index), (avl *)(rd))
 109 #define tc_class_index_del(st, rd) avl_remove(&((st)->classes_index), (avl *)(rd))
 110
 111 static struct tc_class *tc_class_index_find(struct tc_device *st, const char *id, uint32_t hash) {
 112         struct tc_class *result = NULL, tmp;
 113         tmp.id = (char *)id;
 114         tmp.hash = (hash)?hash:simple_hash(tmp.id);
 115
 116         avl_search(&(st->classes_index), (avl *)&tmp, tc_class_iterator, (avl **)&result);
 117         return result;
 118 }
 119
 120 // ----------------------------------------------------------------------------
 121
 122 static void tc_class_free(struct tc_device *n, struct tc_class *c) {
 123         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);
 124
 125         if(c->next) c->next->prev = c->prev;
 126         if(c->prev) c->prev->next = c->next;
 127         if(n->classes == c) n->classes = c->next;
 128
 129         tc_class_index_del(n, c);
 130
 131         if(c->id) free(c->id);
 132         if(c->name) free(c->name);
 133         if(c->leafid) free(c->leafid);
 134         if(c->parentid) free(c->parentid);
 135
 136         free(c);
 137 }
 138
 139 static void tc_device_classes_cleanup(struct tc_device *d) {
 140         static int cleanup_every = 999;
 141
 142         if(cleanup_every > 0) {
 143                 cleanup_every = -config_get_number("plugin:tc", "cleanup unused classes every", 60);
 144                 if(cleanup_every > 0) cleanup_every = -cleanup_every;
 145                 if(cleanup_every == 0) cleanup_every = -1;
 146         }
 147
 148         struct tc_class *c = d->classes;
 149         while(c) {
 150                 if(c->seen < cleanup_every) {
 151                         struct tc_class *nc = c->next;
 152                         tc_class_free(d, c);
 153                         c = nc;
 154                 }
 155                 else c = c->next;
 156
 157                 if(c) {
 158                         c->updated = 0;
 159                         c->seen--;
 160                 }
 161         }
 162 }
 163
 164 static void tc_device_commit(struct tc_device *d)
 165 {
 166         static int enable_new_interfaces = -1;
 167
 168         if(enable_new_interfaces == -1) enable_new_interfaces = config_get_boolean("plugin:tc", "enable new interfaces detected at runtime", 1);
 169
 170         // we only need to add leaf classes
 171         struct tc_class *c, *x;
 172
 173         // set all classes
 174         for(c = d->classes ; c ; c = c->next) {
 175                 c->isleaf = 1;
 176                 c->hasparent = 0;
 177         }
 178
 179         // mark the classes as leafs and parents
 180         for(c = d->classes ; c ; c = c->next) {
 181                 if(!c->updated) continue;
 182
 183                 for(x = d->classes ; x ; x = x->next) {
 184                         if(!x->updated) continue;
 185
 186                         if(c == x) continue;
 187
 188                         if(x->parentid && (
 189                                 (               c->hash      == x->parent_hash && strcmp(c->id,     x->parentid) == 0) ||
 190                                 (c->leafid   && c->leaf_hash == x->parent_hash && strcmp(c->leafid, x->parentid) == 0))) {
 191                                 // 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);
 192                                 c->isleaf = 0;
 193                                 x->hasparent = 1;
 194                         }
 195                 }
 196         }
 197
 198         // debugging:
 199         /*
 200         for ( c = d->classes ; c ; c = c->next) {
 201                 if(c->isleaf && c->hasparent) debug(D_TC_LOOP, "TC: Device %s, class %s, OK", d->name, c->id);
 202                 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);
 203         }
 204         */
 205
 206         // we need at least a class
 207         for(c = d->classes ; c ; c = c->next) {
 208                 // 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);
 209                 if(!c->updated) continue;
 210                 if(c->isleaf && c->hasparent) break;
 211         }
 212         if(!c) {
 213                 debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. No leaf classes.", d->name?d->name:d->id);
 214                 tc_device_classes_cleanup(d);
 215                 return;
 216         }
 217
 218         char var_name[CONFIG_MAX_NAME + 1];
 219         snprintf(var_name, CONFIG_MAX_NAME, "qos for %s", d->id);
 220         if(config_get_boolean("plugin:tc", var_name, enable_new_interfaces)) {
 221                 RRDSET *st = rrdset_find_bytype(RRD_TYPE_TC, d->id);
 222                 if(!st) {
 223                         debug(D_TC_LOOP, "TC: Creating new chart for device '%s'", d->name?d->name:d->id);
 224
 225                         st = rrdset_create(RRD_TYPE_TC, d->id, d->name?d->name:d->id, d->family?d->family:d->id, "Class Usage", "kilobits/s", 1000, rrd_update_every, RRDSET_TYPE_STACKED);
 226
 227                         for(c = d->classes ; c ; c = c->next) {
 228                                 if(!c->updated) continue;
 229
 230                                 if(c->isleaf && c->hasparent)
 231                                         rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 232                         }
 233                 }
 234                 else {
 235                         debug(D_TC_LOOP, "TC: Updating chart for device '%s'", d->name?d->name:d->id);
 236                         rrdset_next_plugins(st);
 237
 238                         if(d->name && strcmp(d->id, d->name) != 0) rrdset_set_name(st, d->name);
 239                 }
 240
 241                 for(c = d->classes ; c ; c = c->next) {
 242                         if(!c->updated) continue;
 243
 244                         if(c->isleaf && c->hasparent) {
 245                                 RRDDIM *rd = rrddim_find(st, c->id);
 246
 247                                 if(!rd) {
 248                                         debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s'", st->id, c->id, c->name);
 249
 250                                         // new class, we have to add it
 251                                         rd = rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 252                                 }
 253                                 else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", st->id, c->id);
 254
 255                                 rrddim_set_by_pointer(st, rd, c->bytes);
 256
 257                                 // if it has a name, different to the id
 258                                 if(c->name) {
 259                                         // update the rrd dimension with the new name
 260                                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", st->id, rd->id, c->name);
 261                                         rrddim_set_name(st, rd, c->name);
 262
 263                                         free(c->name);
 264                                         c->name = NULL;
 265                                 }
 266                         }
 267                 }
 268                 rrdset_done(st);
 269         }
 270
 271         tc_device_classes_cleanup(d);
 272 }
 273
 274 static void tc_device_set_class_name(struct tc_device *d, char *id, char *name)
 275 {
 276         struct tc_class *c = tc_class_index_find(d, id, 0);
 277         if(c) {
 278                 if(c->name) free(c->name);
 279                 c->name = NULL;
 280
 281                 if(name && *name && strcmp(c->id, name) != 0) {
 282                         debug(D_TC_LOOP, "TC: Setting device '%s', class '%s' name to '%s'", d->id, id, name);
 283                         c->name = strdup(name);
 284                 }
 285         }
 286 }
 287
 288 static void tc_device_set_device_name(struct tc_device *d, char *name) {
 289         if(d->name) free(d->name);
 290         d->name = NULL;
 291
 292         if(name && *name && strcmp(d->id, name) != 0) {
 293                 debug(D_TC_LOOP, "TC: Setting device '%s' name to '%s'", d->id, name);
 294                 d->name = strdup(name);
 295         }
 296 }
 297
 298 static void tc_device_set_device_family(struct tc_device *d, char *family) {
 299         if(d->family) free(d->family);
 300         d->family = NULL;
 301
 302         if(family && *family && strcmp(d->id, family) != 0) {
 303                 debug(D_TC_LOOP, "TC: Setting device '%s' family to '%s'", d->id, family);
 304                 d->family = strdup(family);
 305         }
 306         // no need for null termination - it is already null
 307 }
 308
 309 static struct tc_device *tc_device_create(char *id)
 310 {
 311         struct tc_device *d = tc_device_index_find(id, 0);
 312
 313         if(!d) {
 314                 debug(D_TC_LOOP, "TC: Creating device '%s'", id);
 315
 316                 d = calloc(1, sizeof(struct tc_device));
 317                 if(!d) {
 318                         fatal("Cannot allocate memory for tc_device %s", id);
 319                         return NULL;
 320                 }
 321
 322                 d->id = strdup(id);
 323                 d->hash = simple_hash(d->id);
 324
 325                 d->classes_index.root = NULL;
 326                 d->classes_index.compar = tc_class_compare;
 327                 pthread_rwlock_init(&d->classes_index.rwlock, NULL);
 328
 329                 tc_device_index_add(d);
 330         }
 331
 332         return(d);
 333 }
 334
 335 static struct tc_class *tc_class_add(struct tc_device *n, char *id, char *parentid, char *leafid)
 336 {
 337         struct tc_class *c = tc_class_index_find(n, id, 0);
 338
 339         if(!c) {
 340                 debug(D_TC_LOOP, "TC: Creating in device '%s', class id '%s', parentid '%s', leafid '%s'", n->id, id, parentid?parentid:"", leafid?leafid:"");
 341
 342                 c = calloc(1, sizeof(struct tc_class));
 343                 if(!c) {
 344                         fatal("Cannot allocate memory for tc class");
 345                         return NULL;
 346                 }
 347
 348                 if(n->classes) n->classes->prev = c;
 349                 c->next = n->classes;
 350                 n->classes = c;
 351
 352                 c->id = strdup(id);
 353                 if(!c->id) {
 354                         free(c);
 355                         return NULL;
 356                 }
 357                 c->hash = simple_hash(c->id);
 358
 359                 if(parentid && *parentid) {
 360                         c->parentid = strdup(parentid);
 361                         c->parent_hash = simple_hash(c->parentid);
 362                 }
 363
 364                 if(leafid && *leafid) {
 365                         c->leafid = strdup(leafid);
 366                         c->leaf_hash = simple_hash(c->leafid);
 367                 }
 368
 369                 tc_class_index_add(n, c);
 370         }
 371
 372         c->seen = 1;
 373
 374         return(c);
 375 }
 376 /*
 377 static void tc_device_free(struct tc_device *n)
 378 {
 379         tc_device_index_del(n);
 380
 381         while(n->classes) tc_class_free(n, n->classes);
 382
 383         if(n->id) free(n->id);
 384         if(n->name) free(n->name);
 385         if(n->family) free(n->family);
 386
 387         free(n);
 388 }
 389 */
 390
 391 #define MAX_WORDS 20
 392
 393 static inline int tc_space(char c) {
 394         switch(c) {
 395         case ' ':
 396         case '\t':
 397         case '\r':
 398         case '\n':
 399                 return 1;
 400
 401         default:
 402                 return 0;
 403         }
 404 }
 405
 406 static void tc_split_words(char *str, char **words, int max_words) {
 407         char *s = str;
 408         int i = 0;
 409
 410         // skip all white space
 411         while(tc_space(*s)) s++;
 412
 413         // store the first word
 414         words[i++] = s;
 415
 416         // while we have something
 417         while(*s) {
 418                 // if it is a space
 419                 if(tc_space(*s)) {
 420
 421                         // terminate the word
 422                         *s++ = '\0';
 423
 424                         // skip all white space
 425                         while(tc_space(*s)) s++;
 426
 427                         // if we reached the end, stop
 428                         if(!*s) break;
 429
 430                         // store the next word
 431                         if(i < max_words) words[i++] = s;
 432                         else break;
 433                 }
 434                 else s++;
 435         }
 436
 437         // terminate the words
 438         while(i < max_words) words[i++] = NULL;
 439 }
 440
 441 pid_t tc_child_pid = 0;
 442 void *tc_main(void *ptr)
 443 {
 444         if(ptr) { ; }
 445
 446         info("TC thread created with task id %d", gettid());
 447
 448         if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
 449                 error("Cannot set pthread cancel type to DEFERRED.");
 450
 451         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 452                 error("Cannot set pthread cancel state to ENABLE.");
 453
 454         struct rusage thread;
 455         RRDSET *stcpu = NULL, *sttime = NULL;
 456
 457         char buffer[TC_LINE_MAX+1] = "";
 458         char *words[MAX_WORDS] = { NULL };
 459
 460         uint32_t BEGIN_HASH = simple_hash("BEGIN");
 461         uint32_t END_HASH = simple_hash("END");
 462         uint32_t CLASS_HASH = simple_hash("class");
 463         uint32_t SENT_HASH = simple_hash("Sent");
 464         uint32_t SETDEVICENAME_HASH = simple_hash("SETDEVICENAME");
 465         uint32_t SETDEVICEGROUP_HASH = simple_hash("SETDEVICEGROUP");
 466         uint32_t SETCLASSNAME_HASH = simple_hash("SETCLASSNAME");
 467         uint32_t WORKTIME_HASH = simple_hash("WORKTIME");
 468 #ifdef DETACH_PLUGINS_FROM_NETDATA
 469         uint32_t MYPID_HASH = simple_hash("MYPID");
 470 #endif
 471         uint32_t first_hash;
 472
 473         for(;1;) {
 474                 FILE *fp;
 475                 struct tc_device *device = NULL;
 476                 struct tc_class *class = NULL;
 477
 478                 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);
 479                 debug(D_TC_LOOP, "executing '%s'", buffer);
 480                 // fp = popen(buffer, "r");
 481                 fp = mypopen(buffer, &tc_child_pid);
 482                 if(!fp) {
 483                         error("TC: Cannot popen(\"%s\", \"r\").", buffer);
 484                         return NULL;
 485                 }
 486
 487                 while(fgets(buffer, TC_LINE_MAX, fp) != NULL) {
 488                         buffer[TC_LINE_MAX] = '\0';
 489                         // debug(D_TC_LOOP, "TC: read '%s'", buffer);
 490
 491                         tc_split_words(buffer, words, MAX_WORDS);
 492                         if(!words[0] || !*words[0]) {
 493                                 // debug(D_TC_LOOP, "empty line");
 494                                 continue;
 495                         }
 496                         // else debug(D_TC_LOOP, "First word is '%s'", words[0]);
 497
 498                         first_hash = simple_hash(words[0]);
 499
 500                         if(first_hash == CLASS_HASH && strcmp(words[0], "class") == 0 && device) {
 501                                 // 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]);
 502
 503                                 if(words[1] && words[2] && words[3] && words[4] && (strcmp(words[3], "parent") == 0 || strcmp(words[3], "root") == 0)) {
 504                                         // char *type     = words[1];  // the class: htb, fq_codel, etc
 505                                         char *id       = words[2];      // the class major:minor
 506                                         char *parent   = words[3];      // 'parent' or 'root'
 507                                         char *parentid = words[4];      // the parent's id
 508                                         char *leaf     = words[5];      // 'leaf'
 509                                         char *leafid   = words[6];      // leafid
 510
 511                                         if(strcmp(parent, "root") == 0) {
 512                                                 parentid = NULL;
 513                                                 leafid = NULL;
 514                                         }
 515                                         else if(!leaf || strcmp(leaf, "leaf") != 0)
 516                                                 leafid = NULL;
 517
 518                                         char leafbuf[20 + 1] = "";
 519                                         if(leafid && leafid[strlen(leafid) - 1] == ':') {
 520                                                 strncpy(leafbuf, leafid, 20 - 1);
 521                                                 strcat(leafbuf, "1");
 522                                                 leafid = leafbuf;
 523                                         }
 524
 525                                         class = tc_class_add(device, id, parentid, leafid);
 526                                 }
 527                         }
 528                         else if(first_hash == END_HASH && strcmp(words[0], "END") == 0) {
 529                                 // debug(D_TC_LOOP, "END line");
 530
 531                                 if(device) {
 532                                         if(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL) != 0)
 533                                                 error("Cannot set pthread cancel state to DISABLE.");
 534
 535                                         tc_device_commit(device);
 536                                         // tc_device_free(device);
 537                                         device = NULL;
 538                                         class = NULL;
 539
 540                                         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 541                                                 error("Cannot set pthread cancel state to ENABLE.");
 542                                 }
 543                         }
 544                         else if(first_hash == BEGIN_HASH && strcmp(words[0], "BEGIN") == 0) {
 545                                 // debug(D_TC_LOOP, "BEGIN line on device '%s'", words[1]);
 546
 547                                 if(device) {
 548                                         // tc_device_free(device);
 549                                         device = NULL;
 550                                         class = NULL;
 551                                 }
 552
 553                                 if(words[1] && *words[1]) {
 554                                         device = tc_device_create(words[1]);
 555                                         class = NULL;
 556                                 }
 557                         }
 558                         else if(first_hash == SENT_HASH && strcmp(words[0], "Sent") == 0 && device && class) {
 559                                 // debug(D_TC_LOOP, "SENT line '%s'", words[1]);
 560                                 if(words[1] && *words[1]) {
 561                                         class->bytes = atoll(words[1]);
 562                                         class->updated = 1;
 563                                 }
 564                                 else class->bytes = 0;
 565                         }
 566                         else if(first_hash == SETDEVICENAME_HASH && strcmp(words[0], "SETDEVICENAME") == 0 && device) {
 567                                 // debug(D_TC_LOOP, "SETDEVICENAME line '%s'", words[1]);
 568                                 if(words[1] && *words[1]) tc_device_set_device_name(device, words[1]);
 569                         }
 570                         else if(first_hash == SETDEVICEGROUP_HASH && strcmp(words[0], "SETDEVICEGROUP") == 0 && device) {
 571                                 // debug(D_TC_LOOP, "SETDEVICEGROUP line '%s'", words[1]);
 572                                 if(words[1] && *words[1]) tc_device_set_device_family(device, words[1]);
 573                         }
 574                         else if(first_hash == SETCLASSNAME_HASH && strcmp(words[0], "SETCLASSNAME") == 0 && device) {
 575                                 // debug(D_TC_LOOP, "SETCLASSNAME line '%s' '%s'", words[1], words[2]);
 576                                 char *id    = words[1];
 577                                 char *path  = words[2];
 578                                 if(id && *id && path && *path) tc_device_set_class_name(device, id, path);
 579                         }
 580                         else if(first_hash == WORKTIME_HASH && strcmp(words[0], "WORKTIME") == 0) {
 581                                 // debug(D_TC_LOOP, "WORKTIME line '%s' '%s'", words[1], words[2]);
 582                                 getrusage(RUSAGE_THREAD, &thread);
 583
 584                                 if(!stcpu) stcpu = rrdset_find("netdata.plugin_tc_cpu");
 585                                 if(!stcpu) {
 586                                         stcpu = rrdset_create("netdata", "plugin_tc_cpu", NULL, "netdata", "NetData TC CPU usage", "milliseconds/s", 10000, rrd_update_every, RRDSET_TYPE_STACKED);
 587                                         rrddim_add(stcpu, "user",  NULL,  1, 1000, RRDDIM_INCREMENTAL);
 588                                         rrddim_add(stcpu, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
 589                                 }
 590                                 else rrdset_next(stcpu);
 591
 592                                 rrddim_set(stcpu, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
 593                                 rrddim_set(stcpu, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
 594                                 rrdset_done(stcpu);
 595
 596                                 if(!sttime) stcpu = rrdset_find("netdata.plugin_tc_time");
 597                                 if(!sttime) {
 598                                         sttime = rrdset_create("netdata", "plugin_tc_time", NULL, "netdata", "NetData TC script execution", "milliseconds/run", 10001, rrd_update_every, RRDSET_TYPE_AREA);
 599                                         rrddim_add(sttime, "run_time",  "run time",  1, 1, RRDDIM_ABSOLUTE);
 600                                 }
 601                                 else rrdset_next(sttime);
 602
 603                                 rrddim_set(sttime, "run_time", atoll(words[1]));
 604                                 rrdset_done(sttime);
 605
 606                         }
 607 #ifdef DETACH_PLUGINS_FROM_NETDATA
 608                         else if(first_hash == MYPID_HASH && (strcmp(words[0], "MYPID") == 0)) {
 609                                 // debug(D_TC_LOOP, "MYPID line '%s'", words[1]);
 610                                 char *id = words[1];
 611                                 pid_t pid = atol(id);
 612
 613                                 if(pid) tc_child_pid = pid;
 614
 615                                 debug(D_TC_LOOP, "TC: Child PID is %d.", tc_child_pid);
 616                         }
 617 #endif
 618                         //else {
 619                         //      debug(D_TC_LOOP, "IGNORED line");
 620                         //}
 621                 }
 622                 mypclose(fp, tc_child_pid);
 623                 tc_child_pid = 0;
 624
 625                 if(device) {
 626                         // tc_device_free(device);
 627                         device = NULL;
 628                         class = NULL;
 629                 }
 630
 631                 sleep(rrd_update_every);
 632         }
 633
 634         return NULL;
 635 }
 636