| 1 | /* |
| 2 | * Copyright (C) 2011-2012 Julien Desfossez |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License Version 2 as |
| 6 | * published by the Free Software Foundation; |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 16 | */ |
| 17 | |
| 18 | #include <babeltrace/ctf/events.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <linux/unistd.h> |
| 21 | #include <string.h> |
| 22 | #include "common.h" |
| 23 | |
| 24 | uint64_t get_cpu_id(const struct bt_ctf_event *event) |
| 25 | { |
| 26 | const struct definition *scope; |
| 27 | uint64_t cpu_id; |
| 28 | |
| 29 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); |
| 30 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(event, scope, "cpu_id")); |
| 31 | if (bt_ctf_field_get_error()) { |
| 32 | fprintf(stderr, "[error] get cpu_id\n"); |
| 33 | return -1ULL; |
| 34 | } |
| 35 | |
| 36 | return cpu_id; |
| 37 | } |
| 38 | |
| 39 | uint64_t get_context_tid(const struct bt_ctf_event *event) |
| 40 | { |
| 41 | const struct definition *scope; |
| 42 | uint64_t tid; |
| 43 | |
| 44 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); |
| 45 | tid = bt_ctf_get_int64(bt_ctf_get_field(event, |
| 46 | scope, "_tid")); |
| 47 | if (bt_ctf_field_get_error()) { |
| 48 | fprintf(stderr, "Missing tid context info\n"); |
| 49 | return -1ULL; |
| 50 | } |
| 51 | |
| 52 | return tid; |
| 53 | } |
| 54 | |
| 55 | uint64_t get_context_pid(const struct bt_ctf_event *event) |
| 56 | { |
| 57 | const struct definition *scope; |
| 58 | uint64_t pid; |
| 59 | |
| 60 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); |
| 61 | pid = bt_ctf_get_int64(bt_ctf_get_field(event, |
| 62 | scope, "_pid")); |
| 63 | if (bt_ctf_field_get_error()) { |
| 64 | fprintf(stderr, "Missing pid context info\n"); |
| 65 | return -1ULL; |
| 66 | } |
| 67 | |
| 68 | return pid; |
| 69 | } |
| 70 | |
| 71 | uint64_t get_context_ppid(const struct bt_ctf_event *event) |
| 72 | { |
| 73 | const struct definition *scope; |
| 74 | uint64_t ppid; |
| 75 | |
| 76 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); |
| 77 | ppid = bt_ctf_get_int64(bt_ctf_get_field(event, |
| 78 | scope, "_ppid")); |
| 79 | if (bt_ctf_field_get_error()) { |
| 80 | fprintf(stderr, "Missing ppid context info\n"); |
| 81 | return -1ULL; |
| 82 | } |
| 83 | |
| 84 | return ppid; |
| 85 | } |
| 86 | |
| 87 | char *get_context_comm(const struct bt_ctf_event *event) |
| 88 | { |
| 89 | const struct definition *scope; |
| 90 | char *comm; |
| 91 | |
| 92 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT); |
| 93 | comm = bt_ctf_get_char_array(bt_ctf_get_field(event, |
| 94 | scope, "_procname")); |
| 95 | if (bt_ctf_field_get_error()) { |
| 96 | fprintf(stderr, "Missing comm context info\n"); |
| 97 | return NULL; |
| 98 | } |
| 99 | |
| 100 | return comm; |
| 101 | } |
| 102 | |
| 103 | /* |
| 104 | * To get the parent process, put the pid in the tid field |
| 105 | * because the parent process gets pid = tid |
| 106 | * |
| 107 | * FIXME : char *comm useful ??? |
| 108 | */ |
| 109 | struct processtop *find_process_tid(struct lttngtop *ctx, int tid, char *comm) |
| 110 | { |
| 111 | gint i; |
| 112 | struct processtop *tmp; |
| 113 | |
| 114 | for (i = 0; i < ctx->process_table->len; i++) { |
| 115 | tmp = g_ptr_array_index(ctx->process_table, i); |
| 116 | if (tmp && tmp->tid == tid) |
| 117 | return tmp; |
| 118 | } |
| 119 | return NULL; |
| 120 | } |
| 121 | |
| 122 | struct processtop* add_proc(struct lttngtop *ctx, int tid, char *comm, |
| 123 | unsigned long timestamp) |
| 124 | { |
| 125 | struct processtop *newproc; |
| 126 | |
| 127 | /* if the PID already exists, we just rename the process */ |
| 128 | /* FIXME : need to integrate with clone/fork/exit to be accurate */ |
| 129 | newproc = find_process_tid(ctx, tid, comm); |
| 130 | if (!newproc) { |
| 131 | newproc = g_new0(struct processtop, 1); |
| 132 | newproc->tid = tid; |
| 133 | newproc->birth = timestamp; |
| 134 | newproc->process_files_table = g_ptr_array_new(); |
| 135 | newproc->files_history = NULL; |
| 136 | newproc->totalfileread = 0; |
| 137 | newproc->totalfilewrite = 0; |
| 138 | newproc->fileread = 0; |
| 139 | newproc->filewrite = 0; |
| 140 | newproc->syscall_info = NULL; |
| 141 | newproc->threadparent = NULL; |
| 142 | newproc->threads = g_ptr_array_new(); |
| 143 | newproc->perf = g_hash_table_new(g_str_hash, g_str_equal); |
| 144 | g_ptr_array_add(ctx->process_table, newproc); |
| 145 | |
| 146 | ctx->nbnewthreads++; |
| 147 | ctx->nbthreads++; |
| 148 | } |
| 149 | newproc->comm = strdup(comm); |
| 150 | |
| 151 | return newproc; |
| 152 | } |
| 153 | |
| 154 | struct processtop* update_proc(struct processtop* proc, int pid, int tid, |
| 155 | int ppid, char *comm) |
| 156 | { |
| 157 | if (proc) { |
| 158 | proc->pid = pid; |
| 159 | proc->tid = tid; |
| 160 | proc->ppid = ppid; |
| 161 | if (strcmp(proc->comm, comm) != 0) { |
| 162 | free(proc->comm); |
| 163 | proc->comm = strdup(comm); |
| 164 | } |
| 165 | } |
| 166 | return proc; |
| 167 | } |
| 168 | |
| 169 | /* |
| 170 | * This function just sets the time of death of a process. |
| 171 | * When we rotate the cputime we remove it from the process list. |
| 172 | */ |
| 173 | void death_proc(struct lttngtop *ctx, int tid, char *comm, |
| 174 | unsigned long timestamp) |
| 175 | { |
| 176 | struct processtop *tmp; |
| 177 | tmp = find_process_tid(ctx, tid, comm); |
| 178 | if (tmp && strcmp(tmp->comm, comm) == 0) { |
| 179 | tmp->death = timestamp; |
| 180 | ctx->nbdeadthreads++; |
| 181 | ctx->nbthreads--; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | struct processtop* get_proc(struct lttngtop *ctx, int tid, char *comm, |
| 186 | unsigned long timestamp) |
| 187 | { |
| 188 | struct processtop *tmp; |
| 189 | tmp = find_process_tid(ctx, tid, comm); |
| 190 | if (tmp && strcmp(tmp->comm, comm) == 0) |
| 191 | return tmp; |
| 192 | return add_proc(ctx, tid, comm, timestamp); |
| 193 | } |
| 194 | |
| 195 | struct processtop *get_proc_pid(struct lttngtop *ctx, int tid, int pid, |
| 196 | unsigned long timestamp) |
| 197 | { |
| 198 | struct processtop *tmp; |
| 199 | tmp = find_process_tid(ctx, tid, NULL); |
| 200 | if (tmp && tmp->pid == pid) |
| 201 | return tmp; |
| 202 | return add_proc(ctx, tid, "Unknown", timestamp); |
| 203 | } |
| 204 | |
| 205 | void add_thread(struct processtop *parent, struct processtop *thread) |
| 206 | { |
| 207 | gint i; |
| 208 | struct processtop *tmp; |
| 209 | |
| 210 | for (i = 0; i < parent->threads->len; i++) { |
| 211 | tmp = g_ptr_array_index(parent->threads, i); |
| 212 | if (tmp == thread) |
| 213 | return; |
| 214 | } |
| 215 | g_ptr_array_add(parent->threads, thread); |
| 216 | } |
| 217 | |
| 218 | struct cputime* add_cpu(int cpu) |
| 219 | { |
| 220 | struct cputime *newcpu; |
| 221 | |
| 222 | newcpu = g_new0(struct cputime, 1); |
| 223 | newcpu->id = cpu; |
| 224 | newcpu->current_task = NULL; |
| 225 | newcpu->perf = g_hash_table_new(g_str_hash, g_str_equal); |
| 226 | |
| 227 | g_ptr_array_add(lttngtop.cpu_table, newcpu); |
| 228 | |
| 229 | return newcpu; |
| 230 | } |
| 231 | struct cputime* get_cpu(int cpu) |
| 232 | { |
| 233 | gint i; |
| 234 | struct cputime *tmp; |
| 235 | |
| 236 | for (i = 0; i < lttngtop.cpu_table->len; i++) { |
| 237 | tmp = g_ptr_array_index(lttngtop.cpu_table, i); |
| 238 | if (tmp->id == cpu) |
| 239 | return tmp; |
| 240 | } |
| 241 | |
| 242 | return add_cpu(cpu); |
| 243 | } |
| 244 | |
| 245 | /* |
| 246 | * At the end of a sampling period, we need to display the cpu time for each |
| 247 | * process and to reset it to zero for the next period |
| 248 | */ |
| 249 | void rotate_cputime(unsigned long end) |
| 250 | { |
| 251 | gint i; |
| 252 | struct cputime *tmp; |
| 253 | unsigned long elapsed; |
| 254 | |
| 255 | for (i = 0; i < lttngtop.cpu_table->len; i++) { |
| 256 | tmp = g_ptr_array_index(lttngtop.cpu_table, i); |
| 257 | elapsed = end - tmp->task_start; |
| 258 | if (tmp->current_task) { |
| 259 | tmp->current_task->totalcpunsec += elapsed; |
| 260 | tmp->current_task->threadstotalcpunsec += elapsed; |
| 261 | if (tmp->current_task->pid != tmp->current_task->tid && |
| 262 | tmp->current_task->threadparent) { |
| 263 | tmp->current_task->threadparent->threadstotalcpunsec += elapsed; |
| 264 | } |
| 265 | } |
| 266 | tmp->task_start = end; |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | void reset_perf_counter(gpointer key, gpointer value, gpointer user_data) |
| 271 | { |
| 272 | ((struct perfcounter*) value)->count = 0; |
| 273 | } |
| 274 | |
| 275 | void copy_perf_counter(gpointer key, gpointer value, gpointer new_table) |
| 276 | { |
| 277 | struct perfcounter *newperf; |
| 278 | |
| 279 | newperf = g_new0(struct perfcounter, 1); |
| 280 | newperf->count = ((struct perfcounter *) value)->count; |
| 281 | newperf->visible = ((struct perfcounter *) value)->visible; |
| 282 | newperf->sort = ((struct perfcounter *) value)->sort; |
| 283 | g_hash_table_insert((GHashTable *) new_table, strdup(key), newperf); |
| 284 | } |
| 285 | |
| 286 | void rotate_perfcounter() { |
| 287 | int i; |
| 288 | struct processtop *tmp; |
| 289 | for (i = 0; i < lttngtop.process_table->len; i++) { |
| 290 | tmp = g_ptr_array_index(lttngtop.process_table, i); |
| 291 | g_hash_table_foreach(tmp->perf, reset_perf_counter, NULL); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | void cleanup_processtop() |
| 296 | { |
| 297 | gint i, j; |
| 298 | struct processtop *tmp; |
| 299 | struct files *tmpf; /* a temporary file */ |
| 300 | |
| 301 | for (i = 0; i < lttngtop.process_table->len; i++) { |
| 302 | tmp = g_ptr_array_index(lttngtop.process_table, i); |
| 303 | tmp->totalcpunsec = 0; |
| 304 | tmp->threadstotalcpunsec = 0; |
| 305 | tmp->fileread = 0; |
| 306 | tmp->filewrite = 0; |
| 307 | |
| 308 | for (j = 0; j < tmp->process_files_table->len; j++) { |
| 309 | tmpf = g_ptr_array_index(tmp->process_files_table, j); |
| 310 | if (tmpf != NULL) { |
| 311 | tmpf->read = 0; |
| 312 | tmpf->write = 0; |
| 313 | |
| 314 | if (tmpf->flag == __NR_close) |
| 315 | g_ptr_array_index( |
| 316 | tmp->process_files_table, j |
| 317 | ) = NULL; |
| 318 | } |
| 319 | } |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | void reset_global_counters() |
| 324 | { |
| 325 | lttngtop.nbnewproc = 0; |
| 326 | lttngtop.nbdeadproc = 0; |
| 327 | lttngtop.nbnewthreads = 0; |
| 328 | lttngtop.nbdeadthreads = 0; |
| 329 | lttngtop.nbnewfiles = 0; |
| 330 | lttngtop.nbclosedfiles = 0; |
| 331 | } |
| 332 | |
| 333 | void copy_global_counters(struct lttngtop *dst) |
| 334 | { |
| 335 | dst->nbproc = lttngtop.nbproc; |
| 336 | dst->nbnewproc = lttngtop.nbnewproc; |
| 337 | dst->nbdeadproc = lttngtop.nbdeadproc; |
| 338 | dst->nbthreads = lttngtop.nbthreads; |
| 339 | dst->nbnewthreads = lttngtop.nbnewthreads; |
| 340 | dst->nbdeadthreads = lttngtop.nbdeadthreads; |
| 341 | dst->nbfiles = lttngtop.nbfiles; |
| 342 | dst->nbnewfiles = lttngtop.nbnewfiles; |
| 343 | dst->nbclosedfiles = lttngtop.nbclosedfiles; |
| 344 | reset_global_counters(); |
| 345 | } |
| 346 | |
| 347 | struct lttngtop* get_copy_lttngtop(unsigned long start, unsigned long end) |
| 348 | { |
| 349 | gint i, j; |
| 350 | unsigned long time; |
| 351 | struct lttngtop *dst; |
| 352 | struct processtop *tmp, *tmp2, *new; |
| 353 | struct cputime *tmpcpu, *newcpu; |
| 354 | struct files *tmpfile, *newfile; |
| 355 | |
| 356 | dst = g_new0(struct lttngtop, 1); |
| 357 | dst->start = start; |
| 358 | dst->end = end; |
| 359 | copy_global_counters(dst); |
| 360 | dst->process_table = g_ptr_array_new(); |
| 361 | dst->files_table = g_ptr_array_new(); |
| 362 | dst->cpu_table = g_ptr_array_new(); |
| 363 | |
| 364 | rotate_cputime(end); |
| 365 | |
| 366 | for (i = 0; i < lttngtop.process_table->len; i++) { |
| 367 | tmp = g_ptr_array_index(lttngtop.process_table, i); |
| 368 | new = g_new0(struct processtop, 1); |
| 369 | |
| 370 | memcpy(new, tmp, sizeof(struct processtop)); |
| 371 | new->threads = g_ptr_array_new(); |
| 372 | new->comm = strdup(tmp->comm); |
| 373 | new->process_files_table = g_ptr_array_new(); |
| 374 | new->files_history = tmp->files_history; |
| 375 | new->perf = g_hash_table_new(g_str_hash, g_str_equal); |
| 376 | g_hash_table_foreach(tmp->perf, copy_perf_counter, new->perf); |
| 377 | |
| 378 | /* compute the stream speed */ |
| 379 | if (end - start != 0) { |
| 380 | time = (end - start) / NSEC_PER_SEC; |
| 381 | new->fileread = new->fileread/(time); |
| 382 | new->filewrite = new->filewrite/(time); |
| 383 | } |
| 384 | |
| 385 | for (j = 0; j < tmp->process_files_table->len; j++) { |
| 386 | tmpfile = g_ptr_array_index(tmp->process_files_table, j); |
| 387 | |
| 388 | newfile = malloc(sizeof(struct files)); |
| 389 | |
| 390 | if (tmpfile != NULL) { |
| 391 | memcpy(newfile, tmpfile, sizeof(struct files)); |
| 392 | newfile->name = strdup(tmpfile->name); |
| 393 | newfile->ref = new; |
| 394 | g_ptr_array_add(new->process_files_table, |
| 395 | newfile); |
| 396 | g_ptr_array_add(dst->files_table, newfile); |
| 397 | } else { |
| 398 | g_ptr_array_add(new->process_files_table, NULL); |
| 399 | g_ptr_array_add(dst->files_table, NULL); |
| 400 | } |
| 401 | /* |
| 402 | * if the process died during the last period, we remove all |
| 403 | * files associated with if after the copy |
| 404 | */ |
| 405 | if (tmp->death > 0 && tmp->death < end) { |
| 406 | /* FIXME : close the files before */ |
| 407 | g_ptr_array_remove(tmp->process_files_table, tmpfile); |
| 408 | g_free(tmpfile); |
| 409 | } |
| 410 | } |
| 411 | g_ptr_array_add(dst->process_table, new); |
| 412 | |
| 413 | /* |
| 414 | * if the process died during the last period, we remove it from |
| 415 | * the current process list after the copy |
| 416 | */ |
| 417 | if (tmp->death > 0 && tmp->death < end) { |
| 418 | g_ptr_array_remove(lttngtop.process_table, tmp); |
| 419 | /* FIXME : TRUE does not mean clears the object in it */ |
| 420 | g_ptr_array_free(tmp->threads, TRUE); |
| 421 | free(tmp->comm); |
| 422 | g_ptr_array_free(tmp->process_files_table, TRUE); |
| 423 | /* FIXME : clear elements */ |
| 424 | g_hash_table_destroy(tmp->perf); |
| 425 | g_free(tmp); |
| 426 | } |
| 427 | } |
| 428 | rotate_perfcounter(); |
| 429 | |
| 430 | for (i = 0; i < lttngtop.cpu_table->len; i++) { |
| 431 | tmpcpu = g_ptr_array_index(lttngtop.cpu_table, i); |
| 432 | newcpu = g_new0(struct cputime, 1); |
| 433 | memcpy(newcpu, tmpcpu, sizeof(struct cputime)); |
| 434 | newcpu->perf = g_hash_table_new(g_str_hash, g_str_equal); |
| 435 | g_hash_table_foreach(tmpcpu->perf, copy_perf_counter, newcpu->perf); |
| 436 | /* |
| 437 | * note : we don't care about the current process pointer in the copy |
| 438 | * so the reference is invalid after the memcpy |
| 439 | */ |
| 440 | g_ptr_array_add(dst->cpu_table, newcpu); |
| 441 | } |
| 442 | /* FIXME : better algo */ |
| 443 | /* create the threads index if required */ |
| 444 | for (i = 0; i < dst->process_table->len; i++) { |
| 445 | tmp = g_ptr_array_index(dst->process_table, i); |
| 446 | if (tmp->pid == tmp->tid) { |
| 447 | for (j = 0; j < dst->process_table->len; j++) { |
| 448 | tmp2 = g_ptr_array_index(dst->process_table, j); |
| 449 | if (tmp2->pid == tmp->pid) { |
| 450 | tmp2->threadparent = tmp; |
| 451 | g_ptr_array_add(tmp->threads, tmp2); |
| 452 | } |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | // update_global_stats(dst); |
| 458 | cleanup_processtop(); |
| 459 | |
| 460 | return dst; |
| 461 | } |
| 462 | |
| 463 | |
| 464 | enum bt_cb_ret handle_statedump_process_state(struct bt_ctf_event *call_data, |
| 465 | void *private_data) |
| 466 | { |
| 467 | const struct definition *scope; |
| 468 | struct processtop *proc; |
| 469 | unsigned long timestamp; |
| 470 | int64_t pid, tid; |
| 471 | char *procname; |
| 472 | |
| 473 | timestamp = bt_ctf_get_timestamp(call_data); |
| 474 | if (timestamp == -1ULL) |
| 475 | goto error; |
| 476 | |
| 477 | scope = bt_ctf_get_top_level_scope(call_data, |
| 478 | BT_EVENT_FIELDS); |
| 479 | pid = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 480 | scope, "_pid")); |
| 481 | if (bt_ctf_field_get_error()) { |
| 482 | fprintf(stderr, "Missing pid context info\n"); |
| 483 | goto error; |
| 484 | } |
| 485 | |
| 486 | scope = bt_ctf_get_top_level_scope(call_data, |
| 487 | BT_EVENT_FIELDS); |
| 488 | tid = bt_ctf_get_int64(bt_ctf_get_field(call_data, |
| 489 | scope, "_tid")); |
| 490 | if (bt_ctf_field_get_error()) { |
| 491 | fprintf(stderr, "Missing tid context info\n"); |
| 492 | goto error; |
| 493 | } |
| 494 | |
| 495 | /* |
| 496 | * FIXME |
| 497 | * I first tried with bt_ctf_get_string but doesn`t work at all |
| 498 | * It couldn`t find the field _name because it is an integer in |
| 499 | * the metadata and not a string like _filename for the |
| 500 | * statedump_file_descriptor |
| 501 | */ |
| 502 | scope = bt_ctf_get_top_level_scope(call_data, |
| 503 | BT_EVENT_FIELDS); |
| 504 | procname = bt_ctf_get_char_array(bt_ctf_get_field(call_data, |
| 505 | scope, "_name")); |
| 506 | if (bt_ctf_field_get_error()) { |
| 507 | fprintf(stderr, "Missing process name context info\n"); |
| 508 | goto error; |
| 509 | } |
| 510 | |
| 511 | proc = find_process_tid(<tngtop, tid, procname); |
| 512 | if (proc == NULL) |
| 513 | proc = add_proc(<tngtop, tid, procname, timestamp); |
| 514 | |
| 515 | free(proc->comm); |
| 516 | proc->comm = strdup(procname); |
| 517 | proc->pid = pid; |
| 518 | |
| 519 | /* |
| 520 | * FIXME |
| 521 | * I would like to free procname because it is duplicated |
| 522 | * when the process is created but it segfaults... |
| 523 | * |
| 524 | * free(procname); |
| 525 | */ |
| 526 | |
| 527 | return BT_CB_OK; |
| 528 | |
| 529 | error: |
| 530 | return BT_CB_ERROR_STOP; |
| 531 | } |