| 1 | /* This file is part of the Linux Trace Toolkit viewer |
| 2 | * Copyright (C) 2003-2004 Michel Dagenais |
| 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 |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 16 | * MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #ifdef HAVE_CONFIG_H |
| 20 | #include <config.h> |
| 21 | #endif |
| 22 | |
| 23 | #include <string.h> |
| 24 | #include <lttv/tracecontext.h> |
| 25 | #include <ltt/event.h> |
| 26 | #include <ltt/facility.h> |
| 27 | #include <ltt/trace.h> |
| 28 | #include <ltt/type.h> |
| 29 | #include <lttv/filter.h> |
| 30 | #include <errno.h> |
| 31 | |
| 32 | #define min(a,b) (((a)<(b))?(a):(b)) |
| 33 | |
| 34 | |
| 35 | gint compare_tracefile(gconstpointer a, gconstpointer b) |
| 36 | { |
| 37 | gint comparison = 0; |
| 38 | |
| 39 | const LttvTracefileContext *trace_a = (const LttvTracefileContext *)a; |
| 40 | const LttvTracefileContext *trace_b = (const LttvTracefileContext *)b; |
| 41 | |
| 42 | if(likely(trace_a != trace_b)) { |
| 43 | comparison = ltt_time_compare(trace_a->timestamp, trace_b->timestamp); |
| 44 | if(unlikely(comparison == 0)) { |
| 45 | if(trace_a->index < trace_b->index) comparison = -1; |
| 46 | else if(trace_a->index > trace_b->index) comparison = 1; |
| 47 | else if(trace_a->t_context->index < trace_b->t_context->index) |
| 48 | comparison = -1; |
| 49 | else if(trace_a->t_context->index > trace_b->t_context->index) |
| 50 | comparison = 1; |
| 51 | } |
| 52 | } |
| 53 | return comparison; |
| 54 | } |
| 55 | |
| 56 | struct _LttvTracesetContextPosition { |
| 57 | GArray *ep; /* Array of LttEventPosition */ |
| 58 | GArray *tfc; /* Array of corresponding |
| 59 | TracefileContext* */ |
| 60 | LttTime timestamp; /* Current time at the saved position */ |
| 61 | /* If ltt_time_infinite : no position is |
| 62 | * set, else, a position is set (may be end |
| 63 | * of trace, with ep->len == 0) */ |
| 64 | }; |
| 65 | |
| 66 | void lttv_context_init(LttvTracesetContext *self, LttvTraceset *ts) |
| 67 | { |
| 68 | LTTV_TRACESET_CONTEXT_GET_CLASS(self)->init(self, ts); |
| 69 | } |
| 70 | |
| 71 | |
| 72 | void lttv_context_fini(LttvTracesetContext *self) |
| 73 | { |
| 74 | LTTV_TRACESET_CONTEXT_GET_CLASS(self)->fini(self); |
| 75 | } |
| 76 | |
| 77 | |
| 78 | LttvTracesetContext * |
| 79 | lttv_context_new_traceset_context(LttvTracesetContext *self) |
| 80 | { |
| 81 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_traceset_context(self); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | |
| 86 | |
| 87 | LttvTraceContext * |
| 88 | lttv_context_new_trace_context(LttvTracesetContext *self) |
| 89 | { |
| 90 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_trace_context(self); |
| 91 | } |
| 92 | |
| 93 | |
| 94 | LttvTracefileContext * |
| 95 | lttv_context_new_tracefile_context(LttvTracesetContext *self) |
| 96 | { |
| 97 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_tracefile_context(self); |
| 98 | } |
| 99 | |
| 100 | /**************************************************************************** |
| 101 | * lttv_traceset_context_compute_time_span |
| 102 | * |
| 103 | * Keep the time span is sync with on the fly addition and removal of traces |
| 104 | * in a trace set. It must be called each time a trace is added/removed from |
| 105 | * the traceset. It could be more efficient to call it only once a bunch |
| 106 | * of traces are loaded, but the calculation is not long, so it's not |
| 107 | * critical. |
| 108 | * |
| 109 | * Author : Xang Xiu Yang |
| 110 | ***************************************************************************/ |
| 111 | static void lttv_traceset_context_compute_time_span( |
| 112 | LttvTracesetContext *self, |
| 113 | TimeInterval *time_span) |
| 114 | { |
| 115 | LttvTraceset * traceset = self->ts; |
| 116 | int numTraces = lttv_traceset_number(traceset); |
| 117 | int i; |
| 118 | LttTime s, e; |
| 119 | LttvTraceContext *tc; |
| 120 | LttTrace * trace; |
| 121 | |
| 122 | time_span->start_time.tv_sec = 0; |
| 123 | time_span->start_time.tv_nsec = 0; |
| 124 | time_span->end_time.tv_sec = 0; |
| 125 | time_span->end_time.tv_nsec = 0; |
| 126 | |
| 127 | for(i=0; i<numTraces;i++){ |
| 128 | tc = self->traces[i]; |
| 129 | trace = tc->t; |
| 130 | |
| 131 | ltt_trace_time_span_get(trace, &s, &e); |
| 132 | |
| 133 | if(i==0){ |
| 134 | time_span->start_time = s; |
| 135 | time_span->end_time = e; |
| 136 | }else{ |
| 137 | if(s.tv_sec < time_span->start_time.tv_sec |
| 138 | || (s.tv_sec == time_span->start_time.tv_sec |
| 139 | && s.tv_nsec < time_span->start_time.tv_nsec)) |
| 140 | time_span->start_time = s; |
| 141 | if(e.tv_sec > time_span->end_time.tv_sec |
| 142 | || (e.tv_sec == time_span->end_time.tv_sec |
| 143 | && e.tv_nsec > time_span->end_time.tv_nsec)) |
| 144 | time_span->end_time = e; |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | static void init_tracefile_context(LttTracefile *tracefile, |
| 150 | LttvTraceContext *tc) |
| 151 | { |
| 152 | LttvTracefileContext *tfc; |
| 153 | LttvTracesetContext *tsc = tc->ts_context; |
| 154 | |
| 155 | tfc = LTTV_TRACESET_CONTEXT_GET_CLASS(tsc)->new_tracefile_context(tsc); |
| 156 | |
| 157 | tfc->index = tc->tracefiles->len; |
| 158 | tc->tracefiles = g_array_append_val(tc->tracefiles, tfc); |
| 159 | |
| 160 | tfc->tf = tracefile; |
| 161 | |
| 162 | tfc->t_context = tc; |
| 163 | tfc->event = lttv_hooks_new(); |
| 164 | tfc->event_by_id = lttv_hooks_by_id_new(); |
| 165 | tfc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 166 | } |
| 167 | |
| 168 | |
| 169 | static void |
| 170 | init(LttvTracesetContext *self, LttvTraceset *ts) |
| 171 | { |
| 172 | guint i, nb_trace; |
| 173 | |
| 174 | LttvTraceContext *tc; |
| 175 | |
| 176 | GData **tracefiles_groups; |
| 177 | |
| 178 | struct compute_tracefile_group_args args; |
| 179 | |
| 180 | nb_trace = lttv_traceset_number(ts); |
| 181 | self->ts = ts; |
| 182 | self->traces = g_new(LttvTraceContext *, nb_trace); |
| 183 | self->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 184 | self->ts_a = lttv_traceset_attribute(ts); |
| 185 | self->sync_position = lttv_traceset_context_position_new(); |
| 186 | for(i = 0 ; i < nb_trace ; i++) { |
| 187 | tc = LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_trace_context(self); |
| 188 | self->traces[i] = tc; |
| 189 | |
| 190 | tc->ts_context = self; |
| 191 | tc->index = i; |
| 192 | tc->vt = lttv_traceset_get(ts, i); |
| 193 | tc->t = lttv_trace(tc->vt); |
| 194 | tc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 195 | tc->t_a = lttv_trace_attribute(tc->vt); |
| 196 | tc->tracefiles = g_array_sized_new(FALSE, TRUE, |
| 197 | sizeof(LttvTracefileContext*), 10); |
| 198 | |
| 199 | tracefiles_groups = ltt_trace_get_tracefiles_groups(tc->t); |
| 200 | if(tracefiles_groups != NULL) { |
| 201 | args.func = (ForEachTraceFileFunc)init_tracefile_context; |
| 202 | args.func_args = tc; |
| 203 | |
| 204 | g_datalist_foreach(tracefiles_groups, |
| 205 | (GDataForeachFunc)compute_tracefile_group, |
| 206 | &args); |
| 207 | } |
| 208 | |
| 209 | #if 0 |
| 210 | nb_control = ltt_trace_control_tracefile_number(tc->t); |
| 211 | nb_per_cpu = ltt_trace_per_cpu_tracefile_number(tc->t); |
| 212 | nb_tracefile = nb_control + nb_per_cpu; |
| 213 | tc->tracefiles = g_new(LttvTracefileContext *, nb_tracefile); |
| 214 | |
| 215 | for(j = 0 ; j < nb_tracefile ; j++) { |
| 216 | tfc = LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_tracefile_context(self); |
| 217 | tc->tracefiles[j] = tfc; |
| 218 | tfc->index = j; |
| 219 | |
| 220 | if(j < nb_control) { |
| 221 | tfc->control = TRUE; |
| 222 | tfc->tf = ltt_trace_control_tracefile_get(tc->t, j); |
| 223 | } |
| 224 | else { |
| 225 | tfc->control = FALSE; |
| 226 | tfc->tf = ltt_trace_per_cpu_tracefile_get(tc->t, j - nb_control); |
| 227 | } |
| 228 | |
| 229 | tfc->t_context = tc; |
| 230 | tfc->e = ltt_event_new(); |
| 231 | tfc->event = lttv_hooks_new(); |
| 232 | tfc->event_by_id = lttv_hooks_by_id_new(); |
| 233 | tfc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 234 | } |
| 235 | #endif //0 |
| 236 | |
| 237 | } |
| 238 | self->pqueue = g_tree_new(compare_tracefile); |
| 239 | lttv_process_traceset_seek_time(self, ltt_time_zero); |
| 240 | lttv_traceset_context_compute_time_span(self, &self->time_span); |
| 241 | |
| 242 | } |
| 243 | |
| 244 | |
| 245 | void fini(LttvTracesetContext *self) |
| 246 | { |
| 247 | guint i, j, nb_trace, nb_tracefile; |
| 248 | |
| 249 | LttvTraceContext *tc; |
| 250 | |
| 251 | LttvTracefileContext **tfc; |
| 252 | |
| 253 | LttvTraceset *ts = self->ts; |
| 254 | |
| 255 | g_tree_destroy(self->pqueue); |
| 256 | g_object_unref(self->a); |
| 257 | lttv_traceset_context_position_destroy(self->sync_position); |
| 258 | |
| 259 | nb_trace = lttv_traceset_number(ts); |
| 260 | |
| 261 | for(i = 0 ; i < nb_trace ; i++) { |
| 262 | tc = self->traces[i]; |
| 263 | |
| 264 | g_object_unref(tc->a); |
| 265 | |
| 266 | nb_tracefile = tc->tracefiles->len; |
| 267 | |
| 268 | for(j = 0 ; j < nb_tracefile ; j++) { |
| 269 | tfc = &g_array_index(tc->tracefiles, LttvTracefileContext*, j); |
| 270 | lttv_hooks_destroy((*tfc)->event); |
| 271 | lttv_hooks_by_id_destroy((*tfc)->event_by_id); |
| 272 | g_object_unref((*tfc)->a); |
| 273 | g_object_unref(*tfc); |
| 274 | } |
| 275 | g_array_free(tc->tracefiles, TRUE); |
| 276 | g_object_unref(tc); |
| 277 | } |
| 278 | g_free(self->traces); |
| 279 | } |
| 280 | |
| 281 | |
| 282 | void lttv_traceset_context_add_hooks(LttvTracesetContext *self, |
| 283 | LttvHooks *before_traceset, |
| 284 | LttvHooks *before_trace, |
| 285 | LttvHooks *before_tracefile, |
| 286 | LttvHooks *event, |
| 287 | LttvHooksById *event_by_id) |
| 288 | { |
| 289 | LttvTraceset *ts = self->ts; |
| 290 | |
| 291 | guint i, nb_trace; |
| 292 | |
| 293 | LttvTraceContext *tc; |
| 294 | |
| 295 | lttv_hooks_call(before_traceset, self); |
| 296 | |
| 297 | nb_trace = lttv_traceset_number(ts); |
| 298 | |
| 299 | for(i = 0 ; i < nb_trace ; i++) { |
| 300 | tc = self->traces[i]; |
| 301 | lttv_trace_context_add_hooks(tc, |
| 302 | before_trace, |
| 303 | before_tracefile, |
| 304 | event, |
| 305 | event_by_id); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | |
| 310 | void lttv_traceset_context_remove_hooks(LttvTracesetContext *self, |
| 311 | LttvHooks *after_traceset, |
| 312 | LttvHooks *after_trace, |
| 313 | LttvHooks *after_tracefile, |
| 314 | LttvHooks *event, |
| 315 | LttvHooksById *event_by_id) |
| 316 | { |
| 317 | |
| 318 | LttvTraceset *ts = self->ts; |
| 319 | |
| 320 | guint i, nb_trace; |
| 321 | |
| 322 | LttvTraceContext *tc; |
| 323 | |
| 324 | nb_trace = lttv_traceset_number(ts); |
| 325 | |
| 326 | for(i = 0 ; i < nb_trace ; i++) { |
| 327 | tc = self->traces[i]; |
| 328 | lttv_trace_context_remove_hooks(tc, |
| 329 | after_trace, |
| 330 | after_tracefile, |
| 331 | event, |
| 332 | event_by_id); |
| 333 | } |
| 334 | |
| 335 | lttv_hooks_call(after_traceset, self); |
| 336 | |
| 337 | |
| 338 | } |
| 339 | |
| 340 | void lttv_trace_context_add_hooks(LttvTraceContext *self, |
| 341 | LttvHooks *before_trace, |
| 342 | LttvHooks *before_tracefile, |
| 343 | LttvHooks *event, |
| 344 | LttvHooksById *event_by_id) |
| 345 | { |
| 346 | guint i, nb_tracefile; |
| 347 | |
| 348 | LttvTracefileContext **tfc; |
| 349 | |
| 350 | lttv_hooks_call(before_trace, self); |
| 351 | |
| 352 | nb_tracefile = self->tracefiles->len; |
| 353 | |
| 354 | for(i = 0 ; i < nb_tracefile ; i++) { |
| 355 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
| 356 | lttv_tracefile_context_add_hooks(*tfc, |
| 357 | before_tracefile, |
| 358 | event, |
| 359 | event_by_id); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | |
| 364 | |
| 365 | void lttv_trace_context_remove_hooks(LttvTraceContext *self, |
| 366 | LttvHooks *after_trace, |
| 367 | LttvHooks *after_tracefile, |
| 368 | LttvHooks *event, |
| 369 | LttvHooksById *event_by_id) |
| 370 | { |
| 371 | guint i, nb_tracefile; |
| 372 | |
| 373 | LttvTracefileContext **tfc; |
| 374 | |
| 375 | nb_tracefile = self->tracefiles->len; |
| 376 | |
| 377 | for(i = 0 ; i < nb_tracefile ; i++) { |
| 378 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
| 379 | lttv_tracefile_context_remove_hooks(*tfc, |
| 380 | after_tracefile, |
| 381 | event, |
| 382 | event_by_id); |
| 383 | } |
| 384 | |
| 385 | lttv_hooks_call(after_trace, self); |
| 386 | } |
| 387 | |
| 388 | void lttv_tracefile_context_add_hooks(LttvTracefileContext *self, |
| 389 | LttvHooks *before_tracefile, |
| 390 | LttvHooks *event, |
| 391 | LttvHooksById *event_by_id) |
| 392 | { |
| 393 | guint i, index; |
| 394 | |
| 395 | LttvHooks *hook; |
| 396 | |
| 397 | lttv_hooks_call(before_tracefile, self); |
| 398 | lttv_hooks_add_list(self->event, event); |
| 399 | if(event_by_id != NULL) { |
| 400 | for(i = 0; i < event_by_id->array->len; i++) { |
| 401 | index = g_array_index(event_by_id->array, guint, i); |
| 402 | hook = lttv_hooks_by_id_find(self->event_by_id, index); |
| 403 | lttv_hooks_add_list(hook, lttv_hooks_by_id_get(event_by_id, index)); |
| 404 | } |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | void lttv_tracefile_context_remove_hooks(LttvTracefileContext *self, |
| 409 | LttvHooks *after_tracefile, |
| 410 | LttvHooks *event, |
| 411 | LttvHooksById *event_by_id) |
| 412 | { |
| 413 | guint i, index; |
| 414 | |
| 415 | LttvHooks *hook; |
| 416 | |
| 417 | lttv_hooks_remove_list(self->event, event); |
| 418 | if(event_by_id != NULL) { |
| 419 | for(i = 0; i < event_by_id->array->len; i++) { |
| 420 | index = g_array_index(event_by_id->array, guint, i); |
| 421 | hook = lttv_hooks_by_id_get(self->event_by_id, index); |
| 422 | if(hook != NULL) |
| 423 | lttv_hooks_remove_list(hook, lttv_hooks_by_id_get(event_by_id, index)); |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | lttv_hooks_call(after_tracefile, self); |
| 428 | } |
| 429 | |
| 430 | |
| 431 | |
| 432 | void lttv_tracefile_context_add_hooks_by_id(LttvTracefileContext *tfc, |
| 433 | unsigned i, |
| 434 | LttvHooks *event_by_id) |
| 435 | { |
| 436 | LttvHooks * h; |
| 437 | h = lttv_hooks_by_id_find(tfc->event_by_id, i); |
| 438 | lttv_hooks_add_list(h, event_by_id); |
| 439 | } |
| 440 | |
| 441 | void lttv_tracefile_context_remove_hooks_by_id(LttvTracefileContext *tfc, |
| 442 | unsigned i) |
| 443 | { |
| 444 | lttv_hooks_by_id_remove(tfc->event_by_id, i); |
| 445 | } |
| 446 | |
| 447 | static LttvTracesetContext * |
| 448 | new_traceset_context(LttvTracesetContext *self) |
| 449 | { |
| 450 | return g_object_new(LTTV_TRACESET_CONTEXT_TYPE, NULL); |
| 451 | } |
| 452 | |
| 453 | |
| 454 | static LttvTraceContext * |
| 455 | new_trace_context(LttvTracesetContext *self) |
| 456 | { |
| 457 | return g_object_new(LTTV_TRACE_CONTEXT_TYPE, NULL); |
| 458 | } |
| 459 | |
| 460 | |
| 461 | static LttvTracefileContext * |
| 462 | new_tracefile_context(LttvTracesetContext *self) |
| 463 | { |
| 464 | return g_object_new(LTTV_TRACEFILE_CONTEXT_TYPE, NULL); |
| 465 | } |
| 466 | |
| 467 | |
| 468 | static void |
| 469 | traceset_context_instance_init (GTypeInstance *instance, gpointer g_class) |
| 470 | { |
| 471 | /* Be careful of anything which would not work well with shallow copies */ |
| 472 | } |
| 473 | |
| 474 | |
| 475 | static void |
| 476 | traceset_context_finalize (LttvTracesetContext *self) |
| 477 | { |
| 478 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACESET_CONTEXT_TYPE))) |
| 479 | ->finalize(G_OBJECT(self)); |
| 480 | } |
| 481 | |
| 482 | |
| 483 | static void |
| 484 | traceset_context_class_init (LttvTracesetContextClass *klass) |
| 485 | { |
| 486 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
| 487 | |
| 488 | gobject_class->finalize = (void (*)(GObject *self))traceset_context_finalize; |
| 489 | klass->init = init; |
| 490 | klass->fini = fini; |
| 491 | klass->new_traceset_context = new_traceset_context; |
| 492 | klass->new_trace_context = new_trace_context; |
| 493 | klass->new_tracefile_context = new_tracefile_context; |
| 494 | } |
| 495 | |
| 496 | |
| 497 | GType |
| 498 | lttv_traceset_context_get_type(void) |
| 499 | { |
| 500 | static GType type = 0; |
| 501 | if (type == 0) { |
| 502 | static const GTypeInfo info = { |
| 503 | sizeof (LttvTracesetContextClass), |
| 504 | NULL, /* base_init */ |
| 505 | NULL, /* base_finalize */ |
| 506 | (GClassInitFunc) traceset_context_class_init, /* class_init */ |
| 507 | NULL, /* class_finalize */ |
| 508 | NULL, /* class_data */ |
| 509 | sizeof (LttvTracesetContext), |
| 510 | 0, /* n_preallocs */ |
| 511 | (GInstanceInitFunc) traceset_context_instance_init, /* instance_init */ |
| 512 | NULL /* Value handling */ |
| 513 | }; |
| 514 | |
| 515 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTracesetContextType", |
| 516 | &info, 0); |
| 517 | } |
| 518 | return type; |
| 519 | } |
| 520 | |
| 521 | |
| 522 | static void |
| 523 | trace_context_instance_init (GTypeInstance *instance, gpointer g_class) |
| 524 | { |
| 525 | /* Be careful of anything which would not work well with shallow copies */ |
| 526 | } |
| 527 | |
| 528 | |
| 529 | static void |
| 530 | trace_context_finalize (LttvTraceContext *self) |
| 531 | { |
| 532 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACE_CONTEXT_TYPE)))-> |
| 533 | finalize(G_OBJECT(self)); |
| 534 | } |
| 535 | |
| 536 | |
| 537 | static void |
| 538 | trace_context_class_init (LttvTraceContextClass *klass) |
| 539 | { |
| 540 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
| 541 | |
| 542 | gobject_class->finalize = (void (*)(GObject *self)) trace_context_finalize; |
| 543 | } |
| 544 | |
| 545 | |
| 546 | GType |
| 547 | lttv_trace_context_get_type(void) |
| 548 | { |
| 549 | static GType type = 0; |
| 550 | if (type == 0) { |
| 551 | static const GTypeInfo info = { |
| 552 | sizeof (LttvTraceContextClass), |
| 553 | NULL, /* base_init */ |
| 554 | NULL, /* base_finalize */ |
| 555 | (GClassInitFunc) trace_context_class_init, /* class_init */ |
| 556 | NULL, /* class_finalize */ |
| 557 | NULL, /* class_data */ |
| 558 | sizeof (LttvTraceContext), |
| 559 | 0, /* n_preallocs */ |
| 560 | (GInstanceInitFunc) trace_context_instance_init, /* instance_init */ |
| 561 | NULL /* Value handling */ |
| 562 | }; |
| 563 | |
| 564 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTraceContextType", |
| 565 | &info, 0); |
| 566 | } |
| 567 | return type; |
| 568 | } |
| 569 | |
| 570 | |
| 571 | static void |
| 572 | tracefile_context_instance_init (GTypeInstance *instance, gpointer g_class) |
| 573 | { |
| 574 | /* Be careful of anything which would not work well with shallow copies */ |
| 575 | } |
| 576 | |
| 577 | |
| 578 | static void |
| 579 | tracefile_context_finalize (LttvTracefileContext *self) |
| 580 | { |
| 581 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACEFILE_CONTEXT_TYPE))) |
| 582 | ->finalize(G_OBJECT(self)); |
| 583 | } |
| 584 | |
| 585 | |
| 586 | static void |
| 587 | tracefile_context_class_init (LttvTracefileContextClass *klass) |
| 588 | { |
| 589 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
| 590 | |
| 591 | gobject_class->finalize = (void (*)(GObject *self))tracefile_context_finalize; |
| 592 | } |
| 593 | |
| 594 | |
| 595 | GType |
| 596 | lttv_tracefile_context_get_type(void) |
| 597 | { |
| 598 | static GType type = 0; |
| 599 | if (type == 0) { |
| 600 | static const GTypeInfo info = { |
| 601 | sizeof (LttvTracefileContextClass), |
| 602 | NULL, /* base_init */ |
| 603 | NULL, /* base_finalize */ |
| 604 | (GClassInitFunc) tracefile_context_class_init, /* class_init */ |
| 605 | NULL, /* class_finalize */ |
| 606 | NULL, /* class_data */ |
| 607 | sizeof (LttvTracefileContext), |
| 608 | 0, /* n_preallocs */ |
| 609 | (GInstanceInitFunc) tracefile_context_instance_init, /* instance_init */ |
| 610 | NULL /* Value handling */ |
| 611 | }; |
| 612 | |
| 613 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTracefileContextType", |
| 614 | &info, 0); |
| 615 | } |
| 616 | return type; |
| 617 | } |
| 618 | |
| 619 | |
| 620 | |
| 621 | static gboolean get_first(gpointer key, gpointer value, gpointer user_data) { |
| 622 | g_assert(key == value); |
| 623 | *((LttvTracefileContext **)user_data) = (LttvTracefileContext *)value; |
| 624 | return TRUE; |
| 625 | } |
| 626 | |
| 627 | #ifdef DEBUG |
| 628 | // Test to see if pqueue is traversed in the right order. |
| 629 | static LttTime test_time; |
| 630 | |
| 631 | static gboolean test_tree(gpointer key, gpointer value, gpointer user_data) { |
| 632 | |
| 633 | LttvTracefileContext *tfc = (LttvTracefileContext *)key; |
| 634 | |
| 635 | g_debug("Tracefile name %s, time %lu.%lu, tfi %u, ti %u", |
| 636 | g_quark_to_string(ltt_tracefile_name(tfc->tf)), |
| 637 | tfc->timestamp.tv_sec, tfc->timestamp.tv_nsec, |
| 638 | tfc->index, tfc->t_context->index); |
| 639 | |
| 640 | if(user_data != NULL) { |
| 641 | if(((LttvTracefileContext *)user_data) == (LttvTracefileContext *)value) { |
| 642 | g_assert(compare_tracefile(user_data, value) == 0); |
| 643 | } else |
| 644 | g_assert(compare_tracefile(user_data, value) != 0); |
| 645 | } |
| 646 | g_assert(ltt_time_compare(test_time, tfc->timestamp) <= 0); |
| 647 | test_time.tv_sec = tfc->timestamp.tv_sec; |
| 648 | test_time.tv_nsec = tfc->timestamp.tv_nsec; |
| 649 | |
| 650 | |
| 651 | //g_assert(((LttvTracefileContext *)user_data) != (LttvTracefileContext *)value); |
| 652 | return FALSE; |
| 653 | } |
| 654 | #endif //DEBUG |
| 655 | |
| 656 | |
| 657 | |
| 658 | void lttv_process_traceset_begin(LttvTracesetContext *self, |
| 659 | LttvHooks *before_traceset, |
| 660 | LttvHooks *before_trace, |
| 661 | LttvHooks *before_tracefile, |
| 662 | LttvHooks *event, |
| 663 | LttvHooksById *event_by_id) |
| 664 | { |
| 665 | |
| 666 | /* simply add hooks in context. _before hooks are called by add_hooks. */ |
| 667 | /* It calls all before_traceset, before_trace, and before_tracefile hooks. */ |
| 668 | lttv_traceset_context_add_hooks(self, |
| 669 | before_traceset, |
| 670 | before_trace, |
| 671 | before_tracefile, |
| 672 | event, |
| 673 | event_by_id); |
| 674 | |
| 675 | } |
| 676 | |
| 677 | enum read_state { LAST_NONE, LAST_OK, LAST_EMPTY }; |
| 678 | |
| 679 | /* Note : a _middle must be preceded from a _seek or another middle */ |
| 680 | guint lttv_process_traceset_middle(LttvTracesetContext *self, |
| 681 | LttTime end, |
| 682 | guint nb_events, |
| 683 | const LttvTracesetContextPosition *end_position) |
| 684 | { |
| 685 | GTree *pqueue = self->pqueue; |
| 686 | |
| 687 | guint fac_id, ev_id, id; |
| 688 | |
| 689 | LttvTracefileContext *tfc; |
| 690 | |
| 691 | LttEvent *e; |
| 692 | |
| 693 | unsigned count = 0; |
| 694 | |
| 695 | guint read_ret; |
| 696 | |
| 697 | enum read_state last_read_state = LAST_NONE; |
| 698 | |
| 699 | gboolean last_ret = FALSE; /* return value of the last hook list called */ |
| 700 | |
| 701 | /* Get the next event from the pqueue, call its hooks, |
| 702 | reinsert in the pqueue the following event from the same tracefile |
| 703 | unless the tracefile is finished or the event is later than the |
| 704 | end time. */ |
| 705 | |
| 706 | while(TRUE) { |
| 707 | tfc = NULL; |
| 708 | g_tree_foreach(pqueue, get_first, &tfc); |
| 709 | /* End of traceset : tfc is NULL */ |
| 710 | if(unlikely(tfc == NULL)) |
| 711 | { |
| 712 | return count; |
| 713 | } |
| 714 | |
| 715 | /* Have we reached : |
| 716 | * - the maximum number of events specified? |
| 717 | * - the end position ? |
| 718 | * - the end time ? |
| 719 | * then the read is finished. We leave the queue in the same state and |
| 720 | * break the loop. |
| 721 | */ |
| 722 | |
| 723 | if(unlikely(last_ret == TRUE || |
| 724 | ((count >= nb_events) && (nb_events != G_MAXULONG)) || |
| 725 | (end_position!=NULL&<tv_traceset_context_ctx_pos_compare(self, |
| 726 | end_position) == 0)|| |
| 727 | ltt_time_compare(end, tfc->timestamp) <= 0)) |
| 728 | { |
| 729 | return count; |
| 730 | } |
| 731 | |
| 732 | /* Get the tracefile with an event for the smallest time found. If two |
| 733 | or more tracefiles have events for the same time, hope that lookup |
| 734 | and remove are consistent. */ |
| 735 | |
| 736 | #ifdef DEBUG |
| 737 | test_time.tv_sec = 0; |
| 738 | test_time.tv_nsec = 0; |
| 739 | g_debug("test tree before remove"); |
| 740 | g_tree_foreach(pqueue, test_tree, tfc); |
| 741 | #endif //DEBUG |
| 742 | g_tree_remove(pqueue, tfc); |
| 743 | |
| 744 | #ifdef DEBUG |
| 745 | test_time.tv_sec = 0; |
| 746 | test_time.tv_nsec = 0; |
| 747 | g_debug("test tree after remove"); |
| 748 | g_tree_foreach(pqueue, test_tree, tfc); |
| 749 | #endif //DEBUG |
| 750 | |
| 751 | e = ltt_tracefile_get_event(tfc->tf); |
| 752 | |
| 753 | if(last_read_state != LAST_EMPTY) { |
| 754 | /* Only call hooks if the last read has given an event or if we are at the |
| 755 | * first pass (not if last read returned end of tracefile) */ |
| 756 | count++; |
| 757 | |
| 758 | fac_id = ltt_event_facility_id(e); |
| 759 | ev_id = ltt_event_eventtype_id(e); |
| 760 | id = GET_HOOK_ID(fac_id, ev_id); |
| 761 | last_ret = lttv_hooks_call_merge(tfc->event, tfc, |
| 762 | lttv_hooks_by_id_get(tfc->event_by_id, id), tfc); |
| 763 | } |
| 764 | |
| 765 | read_ret = ltt_tracefile_read(tfc->tf); |
| 766 | |
| 767 | if(likely(!read_ret)) { |
| 768 | //g_debug("An event is ready"); |
| 769 | tfc->timestamp = ltt_event_time(e); |
| 770 | g_assert(ltt_time_compare(tfc->timestamp, ltt_time_infinite) != 0); |
| 771 | g_tree_insert(pqueue, tfc, tfc); |
| 772 | #ifdef DEBUG |
| 773 | test_time.tv_sec = 0; |
| 774 | test_time.tv_nsec = 0; |
| 775 | g_debug("test tree after event ready"); |
| 776 | g_tree_foreach(pqueue, test_tree, NULL); |
| 777 | #endif //DEBUG |
| 778 | |
| 779 | last_read_state = LAST_OK; |
| 780 | } else { |
| 781 | tfc->timestamp = ltt_time_infinite; |
| 782 | |
| 783 | if(read_ret == ERANGE) { |
| 784 | last_read_state = LAST_EMPTY; |
| 785 | g_debug("End of trace"); |
| 786 | } else |
| 787 | g_error("Error happened in lttv_process_traceset_middle"); |
| 788 | } |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | |
| 793 | void lttv_process_traceset_end(LttvTracesetContext *self, |
| 794 | LttvHooks *after_traceset, |
| 795 | LttvHooks *after_trace, |
| 796 | LttvHooks *after_tracefile, |
| 797 | LttvHooks *event, |
| 798 | LttvHooksById *event_by_id) |
| 799 | { |
| 800 | /* Remove hooks from context. _after hooks are called by remove_hooks. */ |
| 801 | /* It calls all after_traceset, after_trace, and after_tracefile hooks. */ |
| 802 | lttv_traceset_context_remove_hooks(self, |
| 803 | after_traceset, |
| 804 | after_trace, |
| 805 | after_tracefile, |
| 806 | event, |
| 807 | event_by_id); |
| 808 | } |
| 809 | |
| 810 | /* Subtile modification : |
| 811 | * if tracefile has no event at or after the time requested, it is not put in |
| 812 | * the queue, as the next read would fail. |
| 813 | * |
| 814 | * Don't forget to empty the traceset pqueue before calling this. |
| 815 | */ |
| 816 | void lttv_process_trace_seek_time(LttvTraceContext *self, LttTime start) |
| 817 | { |
| 818 | guint i, nb_tracefile; |
| 819 | |
| 820 | gint ret; |
| 821 | |
| 822 | LttvTracefileContext **tfc; |
| 823 | |
| 824 | nb_tracefile = self->tracefiles->len; |
| 825 | |
| 826 | GTree *pqueue = self->ts_context->pqueue; |
| 827 | |
| 828 | for(i = 0 ; i < nb_tracefile ; i++) { |
| 829 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
| 830 | |
| 831 | //g_tree_remove(pqueue, *tfc); |
| 832 | |
| 833 | ret = ltt_tracefile_seek_time((*tfc)->tf, start); |
| 834 | if(ret == EPERM) g_error("error in lttv_process_trace_seek_time seek"); |
| 835 | |
| 836 | if(ret == 0) { /* not ERANGE especially */ |
| 837 | (*tfc)->timestamp = ltt_event_time(ltt_tracefile_get_event((*tfc)->tf)); |
| 838 | g_assert(ltt_time_compare((*tfc)->timestamp, ltt_time_infinite) != 0); |
| 839 | g_tree_insert(pqueue, (*tfc), (*tfc)); |
| 840 | } else { |
| 841 | (*tfc)->timestamp = ltt_time_infinite; |
| 842 | } |
| 843 | } |
| 844 | #ifdef DEBUG |
| 845 | test_time.tv_sec = 0; |
| 846 | test_time.tv_nsec = 0; |
| 847 | g_debug("test tree after seek_time"); |
| 848 | g_tree_foreach(pqueue, test_tree, NULL); |
| 849 | #endif //DEBUG |
| 850 | |
| 851 | |
| 852 | |
| 853 | } |
| 854 | |
| 855 | |
| 856 | void lttv_process_traceset_seek_time(LttvTracesetContext *self, LttTime start) |
| 857 | { |
| 858 | guint i, nb_trace; |
| 859 | |
| 860 | LttvTraceContext *tc; |
| 861 | |
| 862 | g_tree_destroy(self->pqueue); |
| 863 | self->pqueue = g_tree_new(compare_tracefile); |
| 864 | |
| 865 | nb_trace = lttv_traceset_number(self->ts); |
| 866 | for(i = 0 ; i < nb_trace ; i++) { |
| 867 | tc = self->traces[i]; |
| 868 | lttv_process_trace_seek_time(tc, start); |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | |
| 873 | gboolean lttv_process_traceset_seek_position(LttvTracesetContext *self, |
| 874 | const LttvTracesetContextPosition *pos) |
| 875 | { |
| 876 | guint i; |
| 877 | |
| 878 | /* If a position is set, seek the traceset to this position */ |
| 879 | if(ltt_time_compare(pos->timestamp, ltt_time_infinite) != 0) { |
| 880 | g_tree_destroy(self->pqueue); |
| 881 | self->pqueue = g_tree_new(compare_tracefile); |
| 882 | |
| 883 | for(i=0;i<pos->ep->len; i++) { |
| 884 | LttEventPosition **ep = &g_array_index(pos->ep, LttEventPosition*, i); |
| 885 | LttvTracefileContext **tfc = |
| 886 | &g_array_index(pos->tfc, LttvTracefileContext*, i); |
| 887 | if(*ep != NULL) { |
| 888 | if(ltt_tracefile_seek_position((*tfc)->tf, *ep) != 0) |
| 889 | return 1; |
| 890 | (*tfc)->timestamp = ltt_event_time(ltt_tracefile_get_event((*tfc)->tf)); |
| 891 | g_assert(ltt_time_compare((*tfc)->timestamp, ltt_time_infinite) != 0); |
| 892 | g_tree_insert(self->pqueue, (*tfc), (*tfc)); |
| 893 | } else { |
| 894 | (*tfc)->timestamp = ltt_time_infinite; |
| 895 | } |
| 896 | } |
| 897 | } |
| 898 | #ifdef DEBUG |
| 899 | test_time.tv_sec = 0; |
| 900 | test_time.tv_nsec = 0; |
| 901 | g_debug("test tree after seek_position"); |
| 902 | g_tree_foreach(self->pqueue, test_tree, NULL); |
| 903 | #endif //DEBUG |
| 904 | |
| 905 | |
| 906 | |
| 907 | return 0; |
| 908 | } |
| 909 | |
| 910 | |
| 911 | |
| 912 | static LttField * |
| 913 | find_field(LttEventType *et, const GQuark field) |
| 914 | { |
| 915 | LttType *t; |
| 916 | |
| 917 | LttField *f; |
| 918 | |
| 919 | guint i, nb; |
| 920 | |
| 921 | GQuark name; |
| 922 | |
| 923 | /* Field is unset */ |
| 924 | if(field == 0) return NULL; |
| 925 | |
| 926 | f = ltt_eventtype_field(et); |
| 927 | t = ltt_eventtype_type(et); |
| 928 | g_assert(ltt_type_class(t) == LTT_STRUCT); |
| 929 | nb = ltt_type_member_number(t); |
| 930 | for(i = 0 ; i < nb ; i++) { |
| 931 | ltt_type_member_type(t, i, &name); |
| 932 | if(name == field) break; |
| 933 | } |
| 934 | g_assert(i < nb); |
| 935 | return ltt_field_member(f, i); |
| 936 | } |
| 937 | |
| 938 | LttvTraceHookByFacility *lttv_trace_hook_get_fac(LttvTraceHook *th, |
| 939 | guint facility_id) |
| 940 | { |
| 941 | return &g_array_index(th->fac_index, LttvTraceHookByFacility, facility_id); |
| 942 | } |
| 943 | |
| 944 | /* Get the first facility corresponding to the name. As the types must be |
| 945 | * compatible, it is relevant to use the field name and sizes of the first |
| 946 | * facility to create data structures and assume the data will be compatible |
| 947 | * thorough the trace */ |
| 948 | LttvTraceHookByFacility *lttv_trace_hook_get_first(LttvTraceHook *th) |
| 949 | { |
| 950 | g_assert(th->fac_list->len > 0); |
| 951 | return g_array_index(th->fac_list, LttvTraceHookByFacility*, 0); |
| 952 | } |
| 953 | |
| 954 | |
| 955 | /* Returns 0 on success, -1 if fails. */ |
| 956 | gint |
| 957 | lttv_trace_find_hook(LttTrace *t, GQuark facility, GQuark event, |
| 958 | GQuark field1, GQuark field2, GQuark field3, LttvHook h, gpointer hook_data, |
| 959 | LttvTraceHook *th) |
| 960 | { |
| 961 | LttFacility *f; |
| 962 | |
| 963 | LttEventType *et, *first_et; |
| 964 | |
| 965 | GArray *facilities; |
| 966 | |
| 967 | guint i, fac_id, ev_id; |
| 968 | |
| 969 | LttvTraceHookByFacility *thf, *first_thf; |
| 970 | |
| 971 | facilities = ltt_trace_facility_get_by_name(t, facility); |
| 972 | |
| 973 | if(unlikely(facilities == NULL)) goto facility_error; |
| 974 | |
| 975 | th->fac_index = g_array_sized_new(FALSE, TRUE, |
| 976 | sizeof(LttvTraceHookByFacility), |
| 977 | NUM_FACILITIES); |
| 978 | th->fac_index = g_array_set_size(th->fac_index, NUM_FACILITIES); |
| 979 | |
| 980 | th->fac_list = g_array_sized_new(FALSE, TRUE, |
| 981 | sizeof(LttvTraceHookByFacility*), |
| 982 | facilities->len); |
| 983 | th->fac_list = g_array_set_size(th->fac_list, facilities->len); |
| 984 | |
| 985 | fac_id = g_array_index(facilities, guint, 0); |
| 986 | f = ltt_trace_get_facility_by_num(t, fac_id); |
| 987 | |
| 988 | et = ltt_facility_eventtype_get_by_name(f, event); |
| 989 | if(unlikely(et == NULL)) goto event_error; |
| 990 | |
| 991 | thf = &g_array_index(th->fac_index, LttvTraceHookByFacility, fac_id); |
| 992 | g_array_index(th->fac_list, LttvTraceHookByFacility*, 0) = thf; |
| 993 | |
| 994 | ev_id = ltt_eventtype_id(et); |
| 995 | |
| 996 | thf->h = h; |
| 997 | thf->id = GET_HOOK_ID(fac_id, ev_id); |
| 998 | thf->f1 = find_field(et, field1); |
| 999 | thf->f2 = find_field(et, field2); |
| 1000 | thf->f3 = find_field(et, field3); |
| 1001 | thf->hook_data = hook_data; |
| 1002 | |
| 1003 | first_thf = thf; |
| 1004 | first_et = et; |
| 1005 | |
| 1006 | /* Check for type compatibility too */ |
| 1007 | for(i=1;i<facilities->len;i++) { |
| 1008 | fac_id = g_array_index(facilities, guint, i); |
| 1009 | f = ltt_trace_get_facility_by_num(t, fac_id); |
| 1010 | |
| 1011 | et = ltt_facility_eventtype_get_by_name(f, event); |
| 1012 | if(unlikely(et == NULL)) goto event_error; |
| 1013 | |
| 1014 | thf = &g_array_index(th->fac_index, LttvTraceHookByFacility, fac_id); |
| 1015 | g_array_index(th->fac_list, LttvTraceHookByFacility*, i) = thf; |
| 1016 | ev_id = ltt_eventtype_id(et); |
| 1017 | thf->h = h; |
| 1018 | thf->id = GET_HOOK_ID(fac_id, ev_id); |
| 1019 | thf->f1 = find_field(et, field1); |
| 1020 | if(check_fields_compatibility(first_et, et, |
| 1021 | first_thf->f1, thf->f1)) |
| 1022 | goto type_error; |
| 1023 | |
| 1024 | thf->f2 = find_field(et, field2); |
| 1025 | if(check_fields_compatibility(first_et, et, |
| 1026 | first_thf->f2, thf->f2)) |
| 1027 | goto type_error; |
| 1028 | |
| 1029 | thf->f3 = find_field(et, field3); |
| 1030 | if(check_fields_compatibility(first_et, et, |
| 1031 | first_thf->f3, thf->f3)) |
| 1032 | goto type_error; |
| 1033 | thf->hook_data = hook_data; |
| 1034 | } |
| 1035 | |
| 1036 | return 0; |
| 1037 | |
| 1038 | type_error: |
| 1039 | goto free; |
| 1040 | event_error: |
| 1041 | g_error("Event type does not exist for event %s", |
| 1042 | g_quark_to_string(event)); |
| 1043 | goto free; |
| 1044 | facility_error: |
| 1045 | g_error("No %s facility", g_quark_to_string(facility)); |
| 1046 | goto free; |
| 1047 | free: |
| 1048 | g_array_free(th->fac_index, TRUE); |
| 1049 | g_array_free(th->fac_list, TRUE); |
| 1050 | th->fac_index = NULL; |
| 1051 | th->fac_list = NULL; |
| 1052 | return -1; |
| 1053 | } |
| 1054 | |
| 1055 | void lttv_trace_hook_destroy(LttvTraceHook *th) |
| 1056 | { |
| 1057 | g_array_free(th->fac_index, TRUE); |
| 1058 | g_array_free(th->fac_list, TRUE); |
| 1059 | } |
| 1060 | |
| 1061 | |
| 1062 | LttvTracesetContextPosition *lttv_traceset_context_position_new() |
| 1063 | { |
| 1064 | LttvTracesetContextPosition *pos = g_new(LttvTracesetContextPosition,1); |
| 1065 | pos->ep = g_array_sized_new(FALSE, TRUE, sizeof(LttEventPosition*), |
| 1066 | 10); |
| 1067 | pos->tfc = g_array_sized_new(FALSE, TRUE, sizeof(LttvTracefileContext*), |
| 1068 | 10); |
| 1069 | pos->timestamp = ltt_time_infinite; |
| 1070 | return pos; |
| 1071 | } |
| 1072 | |
| 1073 | /* Save all positions, the ones with infinite time will have NULL |
| 1074 | * ep. */ |
| 1075 | void lttv_traceset_context_position_save(const LttvTracesetContext *self, |
| 1076 | LttvTracesetContextPosition *pos) |
| 1077 | { |
| 1078 | guint i; |
| 1079 | guint num_traces = lttv_traceset_number(self->ts); |
| 1080 | |
| 1081 | for(i=0;i<pos->ep->len;i++){ |
| 1082 | LttEventPosition *ep = g_array_index(pos->ep, LttEventPosition*, i); |
| 1083 | if(ep != NULL) g_free(ep); |
| 1084 | } |
| 1085 | |
| 1086 | pos->tfc = g_array_set_size(pos->tfc, 0); |
| 1087 | pos->ep = g_array_set_size(pos->ep, 0); |
| 1088 | |
| 1089 | pos->timestamp = ltt_time_infinite; |
| 1090 | |
| 1091 | for(i=0; i<num_traces;i++) { |
| 1092 | GArray * tracefiles = self->traces[i]->tracefiles; |
| 1093 | guint j; |
| 1094 | guint num_tracefiles = tracefiles->len; |
| 1095 | |
| 1096 | for(j=0;j<num_tracefiles;j++) { |
| 1097 | LttvTracefileContext **tfc = &g_array_index(tracefiles, |
| 1098 | LttvTracefileContext*, j); |
| 1099 | |
| 1100 | LttEvent *event = ltt_tracefile_get_event((*tfc)->tf); |
| 1101 | LttEventPosition *ep; |
| 1102 | |
| 1103 | if(ltt_time_compare((*tfc)->timestamp, ltt_time_infinite) != 0) { |
| 1104 | ep = ltt_event_position_new(); |
| 1105 | ltt_event_position(event, ep); |
| 1106 | if(ltt_time_compare((*tfc)->timestamp, pos->timestamp) < 0) |
| 1107 | pos->timestamp = (*tfc)->timestamp; |
| 1108 | } else { |
| 1109 | ep = NULL; |
| 1110 | } |
| 1111 | g_array_append_val(pos->tfc, *tfc); |
| 1112 | g_array_append_val(pos->ep, ep); |
| 1113 | } |
| 1114 | |
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | void lttv_traceset_context_position_destroy(LttvTracesetContextPosition *pos) |
| 1119 | { |
| 1120 | int i; |
| 1121 | LttEventPosition **ep; |
| 1122 | |
| 1123 | for(i=0;i<pos->ep->len;i++) { |
| 1124 | ep = &g_array_index(pos->ep, LttEventPosition*, i); |
| 1125 | if(*ep != NULL) |
| 1126 | g_free(*ep); |
| 1127 | } |
| 1128 | g_array_free(pos->ep, TRUE); |
| 1129 | g_array_free(pos->tfc, TRUE); |
| 1130 | g_free(pos); |
| 1131 | } |
| 1132 | |
| 1133 | void lttv_traceset_context_position_copy(LttvTracesetContextPosition *dest, |
| 1134 | const LttvTracesetContextPosition *src) |
| 1135 | { |
| 1136 | int i; |
| 1137 | LttEventPosition **src_ep, **dest_ep; |
| 1138 | |
| 1139 | dest->ep = g_array_set_size(dest->ep, src->ep->len); |
| 1140 | dest->tfc = g_array_set_size(dest->tfc, src->tfc->len); |
| 1141 | |
| 1142 | for(i=0;i<src->ep->len;i++) { |
| 1143 | src_ep = &g_array_index(src->ep, LttEventPosition*, i); |
| 1144 | dest_ep = &g_array_index(dest->ep, LttEventPosition*, i); |
| 1145 | if(*src_ep != NULL) { |
| 1146 | if(*dest_ep == NULL) *dest_ep = ltt_event_position_new(); |
| 1147 | ltt_event_position_copy( |
| 1148 | *dest_ep, |
| 1149 | *src_ep); |
| 1150 | } else |
| 1151 | *dest_ep = NULL; |
| 1152 | } |
| 1153 | for(i=0;i<src->tfc->len;i++) { |
| 1154 | g_array_index(dest->tfc, LttvTracefileContext*, i) = |
| 1155 | g_array_index(src->tfc, LttvTracefileContext*, i); |
| 1156 | } |
| 1157 | dest->timestamp = src->timestamp; |
| 1158 | } |
| 1159 | |
| 1160 | gint lttv_traceset_context_ctx_pos_compare(const LttvTracesetContext *self, |
| 1161 | const LttvTracesetContextPosition *pos) |
| 1162 | { |
| 1163 | int i; |
| 1164 | int ret = 0; |
| 1165 | |
| 1166 | if(pos->ep->len == 0) { |
| 1167 | if(lttv_traceset_number(self->ts) == 0) return 0; |
| 1168 | else return 1; |
| 1169 | } |
| 1170 | if(lttv_traceset_number(self->ts) == 0) |
| 1171 | return -1; |
| 1172 | |
| 1173 | for(i=0;i<pos->ep->len;i++) { |
| 1174 | LttEventPosition *ep = g_array_index(pos->ep, LttEventPosition*, i); |
| 1175 | LttvTracefileContext *tfc = |
| 1176 | g_array_index(pos->tfc, LttvTracefileContext*, i); |
| 1177 | |
| 1178 | if(ep == NULL) { |
| 1179 | if(ltt_time_compare(tfc->timestamp, ltt_time_infinite) != 0) { |
| 1180 | ret = -1; |
| 1181 | } |
| 1182 | } else { |
| 1183 | if(ltt_time_compare(tfc->timestamp, ltt_time_infinite) == 0) { |
| 1184 | ret = 1; |
| 1185 | } else { |
| 1186 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
| 1187 | |
| 1188 | ret = ltt_event_position_compare((LttEventPosition*)event, |
| 1189 | ep); |
| 1190 | } |
| 1191 | } |
| 1192 | if(ret != 0) return ret; |
| 1193 | |
| 1194 | } |
| 1195 | return 0; |
| 1196 | } |
| 1197 | |
| 1198 | |
| 1199 | gint lttv_traceset_context_pos_pos_compare( |
| 1200 | const LttvTracesetContextPosition *pos1, |
| 1201 | const LttvTracesetContextPosition *pos2) |
| 1202 | { |
| 1203 | int i, j; |
| 1204 | int ret; |
| 1205 | |
| 1206 | if(pos1->ep->len == 0) { |
| 1207 | if(pos2->ep->len == 0) return 0; |
| 1208 | else return 1; |
| 1209 | } |
| 1210 | if(pos2->ep->len == 0) |
| 1211 | return -1; |
| 1212 | |
| 1213 | for(i=0;i<pos1->ep->len;i++) { |
| 1214 | LttEventPosition *ep1 = g_array_index(pos1->ep, LttEventPosition*, i); |
| 1215 | LttvTracefileContext *tfc1 = g_array_index(pos1->tfc, |
| 1216 | LttvTracefileContext*, i); |
| 1217 | |
| 1218 | if(ep1 != NULL) { |
| 1219 | for(j=0;j<pos2->ep->len;j++) { |
| 1220 | LttEventPosition *ep2 = g_array_index(pos2->ep, LttEventPosition*, j); |
| 1221 | LttvTracefileContext *tfc2 = g_array_index(pos2->tfc, |
| 1222 | LttvTracefileContext*, j); |
| 1223 | if(tfc1 == tfc2) { |
| 1224 | if(ep2 != NULL) |
| 1225 | ret = ltt_event_position_compare(ep1, ep2); |
| 1226 | else |
| 1227 | ret = -1; |
| 1228 | |
| 1229 | if(ret != 0) return ret; |
| 1230 | } |
| 1231 | } |
| 1232 | } else { |
| 1233 | for(j=0;j<pos2->ep->len;j++) { |
| 1234 | LttEventPosition *ep2 = g_array_index(pos2->ep, LttEventPosition*, j); |
| 1235 | LttvTracefileContext *tfc2 = g_array_index(pos2->tfc, |
| 1236 | LttvTracefileContext*, j); |
| 1237 | if(tfc1 == tfc2) { |
| 1238 | if(ep2 != NULL) ret = 1; |
| 1239 | } |
| 1240 | } |
| 1241 | } |
| 1242 | } |
| 1243 | return 0; |
| 1244 | } |
| 1245 | |
| 1246 | |
| 1247 | LttTime lttv_traceset_context_position_get_time( |
| 1248 | const LttvTracesetContextPosition *pos) |
| 1249 | { |
| 1250 | return pos->timestamp; |
| 1251 | } |
| 1252 | |
| 1253 | |
| 1254 | LttvTracefileContext *lttv_traceset_context_get_current_tfc(LttvTracesetContext *self) |
| 1255 | { |
| 1256 | GTree *pqueue = self->pqueue; |
| 1257 | LttvTracefileContext *tfc = NULL; |
| 1258 | |
| 1259 | g_tree_foreach(pqueue, get_first, &tfc); |
| 1260 | |
| 1261 | return tfc; |
| 1262 | } |
| 1263 | |
| 1264 | /* lttv_process_traceset_synchronize_tracefiles |
| 1265 | * |
| 1266 | * Use the sync_position field of the trace set context to synchronize each |
| 1267 | * tracefile with the previously saved position. |
| 1268 | * |
| 1269 | * If no previous position has been saved, it simply does nothing. |
| 1270 | */ |
| 1271 | void lttv_process_traceset_synchronize_tracefiles(LttvTracesetContext *tsc) |
| 1272 | { |
| 1273 | g_assert(lttv_process_traceset_seek_position(tsc, tsc->sync_position) == 0); |
| 1274 | } |
| 1275 | |
| 1276 | |
| 1277 | |
| 1278 | |
| 1279 | void lttv_process_traceset_get_sync_data(LttvTracesetContext *tsc) |
| 1280 | { |
| 1281 | lttv_traceset_context_position_save(tsc, tsc->sync_position); |
| 1282 | } |
| 1283 | |
| 1284 | struct seek_back_data { |
| 1285 | guint first_event; /* Index of the first event in the array : we will always |
| 1286 | overwrite at this position : this is a circular array. |
| 1287 | */ |
| 1288 | guint events_found; |
| 1289 | guint n; /* number of events requested */ |
| 1290 | GPtrArray *array; /* array of LttvTracesetContextPositions pointers */ |
| 1291 | LttvFilter *filter; |
| 1292 | }; |
| 1293 | |
| 1294 | static gint seek_back_event_hook(void *hook_data, void* call_data) |
| 1295 | { |
| 1296 | struct seek_back_data *sd = (struct seek_back_data*)hook_data; |
| 1297 | LttvTracefileContext *tfc = (LttvTracefileContext*)call_data; |
| 1298 | LttvTracesetContext *tsc = tfc->t_context->ts_context; |
| 1299 | LttvTracesetContextPosition *pos; |
| 1300 | |
| 1301 | if(sd->filter != NULL) { |
| 1302 | if(!lttv_filter_tree_parse(sd->filter->head, |
| 1303 | ltt_tracefile_get_event(tfc->tf), |
| 1304 | tfc->tf, |
| 1305 | tfc->t_context->t, |
| 1306 | tfc)) |
| 1307 | return FALSE; |
| 1308 | } |
| 1309 | |
| 1310 | pos = (LttvTracesetContextPosition*)g_ptr_array_index (sd->array, |
| 1311 | sd->first_event); |
| 1312 | |
| 1313 | lttv_traceset_context_position_save(tsc, pos); |
| 1314 | |
| 1315 | if(sd->first_event >= sd->array->len - 1) sd->first_event = 0; |
| 1316 | else sd->first_event++; |
| 1317 | |
| 1318 | sd->events_found = min(sd->n, sd->events_found + 1); |
| 1319 | |
| 1320 | return FALSE; |
| 1321 | } |
| 1322 | |
| 1323 | /* Seek back n events back from the current position. |
| 1324 | * |
| 1325 | * Parameters : |
| 1326 | * @self The trace set context |
| 1327 | * @n number of events to jump over |
| 1328 | * @first_offset The initial offset value used. Hint : try about 100000ns. |
| 1329 | * never put first_offset at ltt_time_zero. |
| 1330 | * @time_seeker Function pointer of the function to use to seek time : |
| 1331 | * either lttv_process_traceset_seek_time |
| 1332 | * or lttv_state_traceset_seek_time_closest |
| 1333 | * @filter The filter to call. |
| 1334 | * |
| 1335 | * Return value : the number of events found (might be lower than the number |
| 1336 | * requested if beginning of traceset is reached). |
| 1337 | * |
| 1338 | * The first search will go back first_offset and try to find the last n events |
| 1339 | * matching the filter. If there are not enough, it will try to go back from the |
| 1340 | * new trace point from first_offset*2, and so on, until beginning of trace or n |
| 1341 | * events are found. |
| 1342 | * |
| 1343 | * Note : this function does not take in account the LttvFilter : use the |
| 1344 | * similar function found in state.c instead. |
| 1345 | * |
| 1346 | * Note2 : the caller must make sure that the LttvTracesetContext does not |
| 1347 | * contain any hook, as process_traceset_middle is used in this routine. |
| 1348 | */ |
| 1349 | guint lttv_process_traceset_seek_n_backward(LttvTracesetContext *self, |
| 1350 | guint n, LttTime first_offset, |
| 1351 | seek_time_fct time_seeker, |
| 1352 | LttvFilter *filter) |
| 1353 | { |
| 1354 | if(lttv_traceset_number(self->ts) == 0) return 0; |
| 1355 | g_assert(ltt_time_compare(first_offset, ltt_time_zero) != 0); |
| 1356 | |
| 1357 | guint i; |
| 1358 | LttvTracesetContextPosition *next_iter_end_pos = |
| 1359 | lttv_traceset_context_position_new(); |
| 1360 | LttvTracesetContextPosition *end_pos = lttv_traceset_context_position_new(); |
| 1361 | LttvTracesetContextPosition *saved_pos = lttv_traceset_context_position_new(); |
| 1362 | LttTime time; |
| 1363 | LttTime time_offset; |
| 1364 | struct seek_back_data sd; |
| 1365 | LttvHooks *hooks = lttv_hooks_new(); |
| 1366 | |
| 1367 | sd.first_event = 0; |
| 1368 | sd.events_found = 0; |
| 1369 | sd.array = g_ptr_array_sized_new(n); |
| 1370 | sd.filter = filter; |
| 1371 | sd.n = n; |
| 1372 | g_ptr_array_set_size(sd.array, n); |
| 1373 | for(i=0;i<n;i++) { |
| 1374 | g_ptr_array_index (sd.array, i) = lttv_traceset_context_position_new(); |
| 1375 | } |
| 1376 | |
| 1377 | lttv_traceset_context_position_save(self, next_iter_end_pos); |
| 1378 | lttv_traceset_context_position_save(self, saved_pos); |
| 1379 | /* Get the current time from which we will offset */ |
| 1380 | time = lttv_traceset_context_position_get_time(next_iter_end_pos); |
| 1381 | /* the position saved might be end of traceset... */ |
| 1382 | if(ltt_time_compare(time, self->time_span.end_time) > 0) { |
| 1383 | time = self->time_span.end_time; |
| 1384 | } |
| 1385 | time_offset = first_offset; |
| 1386 | |
| 1387 | lttv_hooks_add(hooks, seek_back_event_hook, &sd, LTTV_PRIO_DEFAULT); |
| 1388 | |
| 1389 | lttv_process_traceset_begin(self, NULL, NULL, NULL, hooks, NULL); |
| 1390 | |
| 1391 | while(1) { |
| 1392 | /* stop criteria : - n events found |
| 1393 | * - time < beginning of trace */ |
| 1394 | if(ltt_time_compare(time, self->time_span.start_time) < 0) break; |
| 1395 | |
| 1396 | lttv_traceset_context_position_copy(end_pos, next_iter_end_pos); |
| 1397 | |
| 1398 | /* We must seek the traceset back to time - time_offset */ |
| 1399 | /* this time becomes the new reference time */ |
| 1400 | time = ltt_time_sub(time, time_offset); |
| 1401 | |
| 1402 | time_seeker(self, time); |
| 1403 | lttv_traceset_context_position_save(self, next_iter_end_pos); |
| 1404 | /* Resync the time in case of a seek_closest */ |
| 1405 | time = lttv_traceset_context_position_get_time(next_iter_end_pos); |
| 1406 | if(ltt_time_compare(time, self->time_span.end_time) > 0) { |
| 1407 | time = self->time_span.end_time; |
| 1408 | } |
| 1409 | |
| 1410 | /* Process the traceset, calling a hook which adds events |
| 1411 | * to the array, overwriting the tail. It changes first_event and |
| 1412 | * events_found too. */ |
| 1413 | /* We would like to have a clean context here : no other hook than our's */ |
| 1414 | |
| 1415 | lttv_process_traceset_middle(self, ltt_time_infinite, |
| 1416 | G_MAXUINT, end_pos); |
| 1417 | |
| 1418 | if(sd.events_found < n) { |
| 1419 | if(sd.first_event > 0) { |
| 1420 | /* Save the first position */ |
| 1421 | LttvTracesetContextPosition *pos = |
| 1422 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, 0); |
| 1423 | lttv_traceset_context_position_copy(saved_pos, pos); |
| 1424 | } |
| 1425 | g_assert(n-sd.events_found <= sd.array->len); |
| 1426 | /* Change array size to n - events_found */ |
| 1427 | for(i=n-sd.events_found;i<sd.array->len;i++) { |
| 1428 | LttvTracesetContextPosition *pos = |
| 1429 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, i); |
| 1430 | lttv_traceset_context_position_destroy(pos); |
| 1431 | } |
| 1432 | g_ptr_array_set_size(sd.array, n-sd.events_found); |
| 1433 | sd.first_event = 0; |
| 1434 | |
| 1435 | } else break; /* Second end criterion : n events found */ |
| 1436 | |
| 1437 | time_offset = ltt_time_mul(time_offset, BACKWARD_SEEK_MUL); |
| 1438 | } |
| 1439 | |
| 1440 | lttv_traceset_context_position_destroy(end_pos); |
| 1441 | lttv_traceset_context_position_destroy(next_iter_end_pos); |
| 1442 | |
| 1443 | lttv_process_traceset_end(self, NULL, NULL, NULL, hooks, NULL); |
| 1444 | |
| 1445 | if(sd.events_found >= n) { |
| 1446 | /* Seek the traceset to the first event in the circular array */ |
| 1447 | LttvTracesetContextPosition *pos = |
| 1448 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, |
| 1449 | sd.first_event); |
| 1450 | g_assert(lttv_process_traceset_seek_position(self, pos) == 0); |
| 1451 | } else { |
| 1452 | /* Will seek to the last saved position : in the worst case, it will be the |
| 1453 | * original position (if events_found is 0) */ |
| 1454 | g_assert(lttv_process_traceset_seek_position(self, saved_pos) == 0); |
| 1455 | } |
| 1456 | |
| 1457 | for(i=0;i<sd.array->len;i++) { |
| 1458 | LttvTracesetContextPosition *pos = |
| 1459 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, i); |
| 1460 | lttv_traceset_context_position_destroy(pos); |
| 1461 | } |
| 1462 | g_ptr_array_free(sd.array, TRUE); |
| 1463 | |
| 1464 | lttv_hooks_destroy(hooks); |
| 1465 | |
| 1466 | lttv_traceset_context_position_destroy(saved_pos); |
| 1467 | |
| 1468 | return sd.events_found; |
| 1469 | } |
| 1470 | |
| 1471 | |
| 1472 | struct seek_forward_data { |
| 1473 | guint event_count; /* event counter */ |
| 1474 | guint n; /* requested number of events to jump over */ |
| 1475 | LttvFilter *filter; |
| 1476 | }; |
| 1477 | |
| 1478 | static gint seek_forward_event_hook(void *hook_data, void* call_data) |
| 1479 | { |
| 1480 | struct seek_forward_data *sd = (struct seek_forward_data*)hook_data; |
| 1481 | LttvTracefileContext *tfc = (LttvTracefileContext*)call_data; |
| 1482 | |
| 1483 | if(sd->filter != NULL) { |
| 1484 | if(!lttv_filter_tree_parse(sd->filter->head, |
| 1485 | ltt_tracefile_get_event(tfc->tf), |
| 1486 | tfc->tf, |
| 1487 | tfc->t_context->t, |
| 1488 | tfc)) |
| 1489 | return FALSE; |
| 1490 | } |
| 1491 | |
| 1492 | sd->event_count++; |
| 1493 | |
| 1494 | if(sd->event_count >= sd->n) |
| 1495 | return TRUE; |
| 1496 | else |
| 1497 | return FALSE; |
| 1498 | } |
| 1499 | |
| 1500 | /* Seek back n events forward from the current position |
| 1501 | * |
| 1502 | * Parameters : |
| 1503 | * @self the trace set context |
| 1504 | * @n number of events to jump over |
| 1505 | * @filter filter to call. |
| 1506 | * |
| 1507 | * returns : the number of events jumped over (may be less than requested if end |
| 1508 | * of traceset reached) */ |
| 1509 | guint lttv_process_traceset_seek_n_forward(LttvTracesetContext *self, |
| 1510 | guint n, LttvFilter *filter) |
| 1511 | { |
| 1512 | struct seek_forward_data sd; |
| 1513 | sd.event_count = 0; |
| 1514 | sd.n = n; |
| 1515 | sd.filter = filter; |
| 1516 | LttvHooks *hooks = lttv_hooks_new(); |
| 1517 | |
| 1518 | lttv_hooks_add(hooks, seek_forward_event_hook, &sd, LTTV_PRIO_DEFAULT); |
| 1519 | |
| 1520 | lttv_process_traceset_begin(self, NULL, NULL, NULL, hooks, NULL); |
| 1521 | |
| 1522 | /* it will end on the end of traceset, or the fact that the |
| 1523 | * hook returns TRUE. |
| 1524 | */ |
| 1525 | lttv_process_traceset_middle(self, ltt_time_infinite, |
| 1526 | G_MAXUINT, NULL); |
| 1527 | |
| 1528 | /* Here, our position is either the end of traceset, or the exact position |
| 1529 | * after n events : leave it like this. */ |
| 1530 | |
| 1531 | lttv_process_traceset_end(self, NULL, NULL, NULL, hooks, NULL); |
| 1532 | |
| 1533 | lttv_hooks_destroy(hooks); |
| 1534 | |
| 1535 | return sd.event_count; |
| 1536 | } |
| 1537 | |
| 1538 | |