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