| 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/lttv.h> |
| 25 | #include <lttv/tracecontext.h> |
| 26 | #include <ltt/event.h> |
| 27 | #include <ltt/trace.h> |
| 28 | #include <lttv/filter.h> |
| 29 | #include <errno.h> |
| 30 | |
| 31 | gint compare_tracefile(gconstpointer a, gconstpointer b) |
| 32 | { |
| 33 | gint comparison = 0; |
| 34 | |
| 35 | const LttvTracefileContext *trace_a = (const LttvTracefileContext *)a; |
| 36 | const LttvTracefileContext *trace_b = (const LttvTracefileContext *)b; |
| 37 | |
| 38 | if(likely(trace_a != trace_b)) { |
| 39 | comparison = ltt_time_compare(trace_a->timestamp, trace_b->timestamp); |
| 40 | if(unlikely(comparison == 0)) { |
| 41 | if(trace_a->index < trace_b->index) comparison = -1; |
| 42 | else if(trace_a->index > trace_b->index) comparison = 1; |
| 43 | else if(trace_a->t_context->index < trace_b->t_context->index) |
| 44 | comparison = -1; |
| 45 | else if(trace_a->t_context->index > trace_b->t_context->index) |
| 46 | comparison = 1; |
| 47 | } |
| 48 | } |
| 49 | return comparison; |
| 50 | } |
| 51 | |
| 52 | typedef struct _LttvTracefileContextPosition { |
| 53 | LttEventPosition *event; |
| 54 | LttvTracefileContext *tfc; |
| 55 | gboolean used; /* Tells if the tfc is at end of traceset position */ |
| 56 | } LttvTracefileContextPosition; |
| 57 | |
| 58 | |
| 59 | struct _LttvTracesetContextPosition { |
| 60 | GArray *tfcp; /* Array of LttvTracefileContextPosition */ |
| 61 | LttTime timestamp; /* Current time at the saved position */ |
| 62 | /* If ltt_time_infinite : no position is |
| 63 | * set, else, a position is set (may be end |
| 64 | * of trace, with ep->len == 0) */ |
| 65 | }; |
| 66 | |
| 67 | void lttv_context_init(LttvTracesetContext *self, LttvTraceset *ts) |
| 68 | { |
| 69 | LTTV_TRACESET_CONTEXT_GET_CLASS(self)->init(self, ts); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | void lttv_context_fini(LttvTracesetContext *self) |
| 74 | { |
| 75 | LTTV_TRACESET_CONTEXT_GET_CLASS(self)->fini(self); |
| 76 | } |
| 77 | |
| 78 | |
| 79 | LttvTracesetContext * |
| 80 | lttv_context_new_traceset_context(LttvTracesetContext *self) |
| 81 | { |
| 82 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_traceset_context(self); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | |
| 87 | |
| 88 | LttvTraceContext * |
| 89 | lttv_context_new_trace_context(LttvTracesetContext *self) |
| 90 | { |
| 91 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_trace_context(self); |
| 92 | } |
| 93 | |
| 94 | |
| 95 | LttvTracefileContext * |
| 96 | lttv_context_new_tracefile_context(LttvTracesetContext *self) |
| 97 | { |
| 98 | return LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_tracefile_context(self); |
| 99 | } |
| 100 | |
| 101 | /**************************************************************************** |
| 102 | * lttv_traceset_context_compute_time_span |
| 103 | * |
| 104 | * Keep the time span in sync with on the fly addition and removal of traces |
| 105 | * in a trace set. It must be called each time a trace is added/removed from |
| 106 | * the traceset. It could be more efficient to call it only once a bunch |
| 107 | * of traces are loaded, but the calculation is not long, so it's not |
| 108 | * critical. |
| 109 | * |
| 110 | * Author : Xang Xiu Yang |
| 111 | ***************************************************************************/ |
| 112 | void lttv_traceset_context_compute_time_span(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 | tc->time_span.start_time = s; |
| 133 | tc->time_span.end_time = e; |
| 134 | |
| 135 | if(i==0){ |
| 136 | time_span->start_time = s; |
| 137 | time_span->end_time = e; |
| 138 | } else { |
| 139 | if(s.tv_sec < time_span->start_time.tv_sec |
| 140 | || (s.tv_sec == time_span->start_time.tv_sec |
| 141 | && s.tv_nsec < time_span->start_time.tv_nsec)) |
| 142 | time_span->start_time = s; |
| 143 | if(e.tv_sec > time_span->end_time.tv_sec |
| 144 | || (e.tv_sec == time_span->end_time.tv_sec |
| 145 | && e.tv_nsec > time_span->end_time.tv_nsec)) |
| 146 | time_span->end_time = e; |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | static void init_tracefile_context(LttTracefile *tracefile, |
| 152 | LttvTraceContext *tc) |
| 153 | { |
| 154 | LttvTracefileContext *tfc; |
| 155 | LttvTracesetContext *tsc = tc->ts_context; |
| 156 | |
| 157 | tfc = LTTV_TRACESET_CONTEXT_GET_CLASS(tsc)->new_tracefile_context(tsc); |
| 158 | |
| 159 | tfc->index = tc->tracefiles->len; |
| 160 | tc->tracefiles = g_array_append_val(tc->tracefiles, tfc); |
| 161 | |
| 162 | tfc->tf = tracefile; |
| 163 | |
| 164 | tfc->t_context = tc; |
| 165 | tfc->event = lttv_hooks_new(); |
| 166 | tfc->event_by_id = lttv_hooks_by_id_new(); |
| 167 | tfc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 168 | tfc->target_pid = -1; |
| 169 | } |
| 170 | |
| 171 | |
| 172 | static void |
| 173 | init(LttvTracesetContext *self, LttvTraceset *ts) |
| 174 | { |
| 175 | guint i, nb_trace; |
| 176 | |
| 177 | LttvTraceContext *tc; |
| 178 | |
| 179 | GData **tracefiles_groups; |
| 180 | |
| 181 | struct compute_tracefile_group_args args; |
| 182 | |
| 183 | nb_trace = lttv_traceset_number(ts); |
| 184 | self->ts = ts; |
| 185 | self->traces = g_new(LttvTraceContext *, nb_trace); |
| 186 | self->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 187 | self->ts_a = lttv_traceset_attribute(ts); |
| 188 | for(i = 0 ; i < nb_trace ; i++) { |
| 189 | tc = LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_trace_context(self); |
| 190 | self->traces[i] = tc; |
| 191 | |
| 192 | tc->ts_context = self; |
| 193 | tc->index = i; |
| 194 | tc->vt = lttv_traceset_get(ts, i); |
| 195 | tc->t = lttv_trace(tc->vt); |
| 196 | tc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 197 | tc->t_a = lttv_trace_attribute(tc->vt); |
| 198 | tc->tracefiles = g_array_sized_new(FALSE, TRUE, |
| 199 | sizeof(LttvTracefileContext*), 10); |
| 200 | |
| 201 | tracefiles_groups = ltt_trace_get_tracefiles_groups(tc->t); |
| 202 | if(tracefiles_groups != NULL) { |
| 203 | args.func = (ForEachTraceFileFunc)init_tracefile_context; |
| 204 | args.func_args = tc; |
| 205 | |
| 206 | g_datalist_foreach(tracefiles_groups, |
| 207 | (GDataForeachFunc)compute_tracefile_group, |
| 208 | &args); |
| 209 | } |
| 210 | |
| 211 | #if 0 |
| 212 | nb_control = ltt_trace_control_tracefile_number(tc->t); |
| 213 | nb_per_cpu = ltt_trace_per_cpu_tracefile_number(tc->t); |
| 214 | nb_tracefile = nb_control + nb_per_cpu; |
| 215 | tc->tracefiles = g_new(LttvTracefileContext *, nb_tracefile); |
| 216 | |
| 217 | for(j = 0 ; j < nb_tracefile ; j++) { |
| 218 | tfc = LTTV_TRACESET_CONTEXT_GET_CLASS(self)->new_tracefile_context(self); |
| 219 | tc->tracefiles[j] = tfc; |
| 220 | tfc->index = j; |
| 221 | |
| 222 | if(j < nb_control) { |
| 223 | tfc->control = TRUE; |
| 224 | tfc->tf = ltt_trace_control_tracefile_get(tc->t, j); |
| 225 | } else { |
| 226 | tfc->control = FALSE; |
| 227 | tfc->tf = ltt_trace_per_cpu_tracefile_get(tc->t, j - nb_control); |
| 228 | } |
| 229 | |
| 230 | tfc->t_context = tc; |
| 231 | tfc->e = ltt_event_new(); |
| 232 | tfc->event = lttv_hooks_new(); |
| 233 | tfc->event_by_id = lttv_hooks_by_id_new(); |
| 234 | tfc->a = g_object_new(LTTV_ATTRIBUTE_TYPE, NULL); |
| 235 | } |
| 236 | #endif //0 |
| 237 | |
| 238 | } |
| 239 | self->sync_position = lttv_traceset_context_position_new(self); |
| 240 | self->pqueue = g_tree_new(compare_tracefile); |
| 241 | lttv_process_traceset_seek_time(self, ltt_time_zero); |
| 242 | lttv_traceset_context_compute_time_span(self, &self->time_span); |
| 243 | |
| 244 | } |
| 245 | |
| 246 | |
| 247 | void fini(LttvTracesetContext *self) |
| 248 | { |
| 249 | guint i, j, nb_trace, nb_tracefile; |
| 250 | |
| 251 | LttvTraceContext *tc; |
| 252 | |
| 253 | LttvTracefileContext **tfc; |
| 254 | |
| 255 | LttvTraceset *ts = self->ts; |
| 256 | |
| 257 | g_tree_destroy(self->pqueue); |
| 258 | g_object_unref(self->a); |
| 259 | lttv_traceset_context_position_destroy(self->sync_position); |
| 260 | |
| 261 | nb_trace = lttv_traceset_number(ts); |
| 262 | |
| 263 | for(i = 0 ; i < nb_trace ; i++) { |
| 264 | tc = self->traces[i]; |
| 265 | |
| 266 | g_object_unref(tc->a); |
| 267 | |
| 268 | nb_tracefile = tc->tracefiles->len; |
| 269 | |
| 270 | for(j = 0 ; j < nb_tracefile ; j++) { |
| 271 | tfc = &g_array_index(tc->tracefiles, LttvTracefileContext*, j); |
| 272 | lttv_hooks_destroy((*tfc)->event); |
| 273 | lttv_hooks_by_id_destroy((*tfc)->event_by_id); |
| 274 | g_object_unref((*tfc)->a); |
| 275 | g_object_unref(*tfc); |
| 276 | } |
| 277 | g_array_free(tc->tracefiles, TRUE); |
| 278 | g_object_unref(tc); |
| 279 | } |
| 280 | g_free(self->traces); |
| 281 | } |
| 282 | |
| 283 | |
| 284 | void lttv_traceset_context_add_hooks(LttvTracesetContext *self, |
| 285 | LttvHooks *before_traceset, |
| 286 | LttvHooks *before_trace, |
| 287 | LttvHooks *before_tracefile, |
| 288 | LttvHooks *event, |
| 289 | LttvHooksByIdChannelArray *event_by_id_channel) |
| 290 | { |
| 291 | LttvTraceset *ts = self->ts; |
| 292 | |
| 293 | guint i, nb_trace; |
| 294 | |
| 295 | LttvTraceContext *tc; |
| 296 | |
| 297 | lttv_hooks_call(before_traceset, self); |
| 298 | |
| 299 | nb_trace = lttv_traceset_number(ts); |
| 300 | |
| 301 | for(i = 0 ; i < nb_trace ; i++) { |
| 302 | tc = self->traces[i]; |
| 303 | lttv_trace_context_add_hooks(tc, |
| 304 | before_trace, |
| 305 | before_tracefile, |
| 306 | event, |
| 307 | event_by_id_channel); |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | |
| 312 | void lttv_traceset_context_remove_hooks(LttvTracesetContext *self, |
| 313 | LttvHooks *after_traceset, |
| 314 | LttvHooks *after_trace, |
| 315 | LttvHooks *after_tracefile, |
| 316 | LttvHooks *event, |
| 317 | LttvHooksByIdChannelArray *event_by_id_channel) |
| 318 | { |
| 319 | |
| 320 | LttvTraceset *ts = self->ts; |
| 321 | |
| 322 | guint i, nb_trace; |
| 323 | |
| 324 | LttvTraceContext *tc; |
| 325 | |
| 326 | nb_trace = lttv_traceset_number(ts); |
| 327 | |
| 328 | for(i = 0 ; i < nb_trace ; i++) { |
| 329 | tc = self->traces[i]; |
| 330 | lttv_trace_context_remove_hooks(tc, |
| 331 | after_trace, |
| 332 | after_tracefile, |
| 333 | event, |
| 334 | event_by_id_channel); |
| 335 | } |
| 336 | |
| 337 | lttv_hooks_call(after_traceset, self); |
| 338 | |
| 339 | |
| 340 | } |
| 341 | |
| 342 | void lttv_trace_context_add_hooks(LttvTraceContext *self, |
| 343 | LttvHooks *before_trace, |
| 344 | LttvHooks *before_tracefile, |
| 345 | LttvHooks *event, |
| 346 | LttvHooksByIdChannelArray *event_by_id_channel) |
| 347 | { |
| 348 | guint i, j, nb_tracefile; |
| 349 | LttvTracefileContext **tfc; |
| 350 | LttTracefile *tf; |
| 351 | |
| 352 | lttv_hooks_call(before_trace, self); |
| 353 | |
| 354 | nb_tracefile = self->tracefiles->len; |
| 355 | |
| 356 | for(i = 0 ; i < nb_tracefile ; i++) { |
| 357 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
| 358 | tf = (*tfc)->tf; |
| 359 | lttv_tracefile_context_add_hooks(*tfc, |
| 360 | before_tracefile, |
| 361 | event, |
| 362 | NULL); |
| 363 | if (event_by_id_channel) { |
| 364 | for(j = 0; j < event_by_id_channel->array->len; j++) { |
| 365 | LttvHooksByIdChannel *hooks = |
| 366 | &g_array_index(event_by_id_channel->array, |
| 367 | LttvHooksByIdChannel, j); |
| 368 | if (tf->name == hooks->channel) |
| 369 | lttv_tracefile_context_add_hooks(*tfc, |
| 370 | NULL, |
| 371 | NULL, |
| 372 | hooks->hooks_by_id); |
| 373 | } |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | |
| 379 | |
| 380 | void lttv_trace_context_remove_hooks(LttvTraceContext *self, |
| 381 | LttvHooks *after_trace, |
| 382 | LttvHooks *after_tracefile, |
| 383 | LttvHooks *event, |
| 384 | LttvHooksByIdChannelArray *event_by_id_channel) |
| 385 | { |
| 386 | guint i, j, nb_tracefile; |
| 387 | LttvTracefileContext **tfc; |
| 388 | LttTracefile *tf; |
| 389 | |
| 390 | nb_tracefile = self->tracefiles->len; |
| 391 | |
| 392 | for(i = 0 ; i < nb_tracefile ; i++) { |
| 393 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
| 394 | tf = (*tfc)->tf; |
| 395 | if (event_by_id_channel) { |
| 396 | for(j = 0; j < event_by_id_channel->array->len; j++) { |
| 397 | LttvHooksByIdChannel *hooks = |
| 398 | &g_array_index(event_by_id_channel->array, |
| 399 | LttvHooksByIdChannel, j); |
| 400 | if (tf->name == hooks->channel) |
| 401 | lttv_tracefile_context_remove_hooks(*tfc, |
| 402 | NULL, |
| 403 | NULL, |
| 404 | hooks->hooks_by_id); |
| 405 | } |
| 406 | } |
| 407 | lttv_tracefile_context_remove_hooks(*tfc, |
| 408 | after_tracefile, |
| 409 | event, |
| 410 | NULL); |
| 411 | |
| 412 | } |
| 413 | |
| 414 | lttv_hooks_call(after_trace, self); |
| 415 | } |
| 416 | |
| 417 | void lttv_tracefile_context_add_hooks(LttvTracefileContext *self, |
| 418 | LttvHooks *before_tracefile, |
| 419 | LttvHooks *event, |
| 420 | LttvHooksById *event_by_id) |
| 421 | { |
| 422 | guint i, index; |
| 423 | LttvHooks *hook; |
| 424 | |
| 425 | lttv_hooks_call(before_tracefile, self); |
| 426 | lttv_hooks_add_list(self->event, event); |
| 427 | if(event_by_id != NULL) { |
| 428 | for(i = 0; i < event_by_id->array->len; i++) { |
| 429 | index = g_array_index(event_by_id->array, guint, i); |
| 430 | hook = lttv_hooks_by_id_find(self->event_by_id, index); |
| 431 | lttv_hooks_add_list(hook, lttv_hooks_by_id_get(event_by_id, index)); |
| 432 | } |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | void lttv_tracefile_context_remove_hooks(LttvTracefileContext *self, |
| 437 | LttvHooks *after_tracefile, |
| 438 | LttvHooks *event, |
| 439 | LttvHooksById *event_by_id) |
| 440 | { |
| 441 | guint i, index; |
| 442 | |
| 443 | LttvHooks *hook; |
| 444 | |
| 445 | lttv_hooks_remove_list(self->event, event); |
| 446 | if(event_by_id != NULL) { |
| 447 | for(i = 0; i < event_by_id->array->len; i++) { |
| 448 | index = g_array_index(event_by_id->array, guint, i); |
| 449 | hook = lttv_hooks_by_id_get(self->event_by_id, index); |
| 450 | if(hook != NULL) |
| 451 | lttv_hooks_remove_list(hook, lttv_hooks_by_id_get(event_by_id, index)); |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | lttv_hooks_call(after_tracefile, self); |
| 456 | } |
| 457 | |
| 458 | static LttvTracesetContext *new_traceset_context(LttvTracesetContext *self) |
| 459 | { |
| 460 | return g_object_new(LTTV_TRACESET_CONTEXT_TYPE, NULL); |
| 461 | } |
| 462 | |
| 463 | |
| 464 | static LttvTraceContext *new_trace_context(LttvTracesetContext *self) |
| 465 | { |
| 466 | return g_object_new(LTTV_TRACE_CONTEXT_TYPE, NULL); |
| 467 | } |
| 468 | |
| 469 | |
| 470 | static LttvTracefileContext *new_tracefile_context(LttvTracesetContext *self) |
| 471 | { |
| 472 | return g_object_new(LTTV_TRACEFILE_CONTEXT_TYPE, NULL); |
| 473 | } |
| 474 | |
| 475 | |
| 476 | static void traceset_context_instance_init(GTypeInstance *instance, |
| 477 | gpointer g_class) |
| 478 | { |
| 479 | /* Be careful of anything which would not work well with shallow copies */ |
| 480 | } |
| 481 | |
| 482 | |
| 483 | static void traceset_context_finalize(LttvTracesetContext *self) |
| 484 | { |
| 485 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACESET_CONTEXT_TYPE))) |
| 486 | ->finalize(G_OBJECT(self)); |
| 487 | } |
| 488 | |
| 489 | |
| 490 | static void traceset_context_class_init(LttvTracesetContextClass *klass) |
| 491 | { |
| 492 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
| 493 | |
| 494 | gobject_class->finalize = (void (*)(GObject *self))traceset_context_finalize; |
| 495 | klass->init = init; |
| 496 | klass->fini = fini; |
| 497 | klass->new_traceset_context = new_traceset_context; |
| 498 | klass->new_trace_context = new_trace_context; |
| 499 | klass->new_tracefile_context = new_tracefile_context; |
| 500 | } |
| 501 | |
| 502 | |
| 503 | GType lttv_traceset_context_get_type(void) |
| 504 | { |
| 505 | static GType type = 0; |
| 506 | if (type == 0) { |
| 507 | static const GTypeInfo info = { |
| 508 | sizeof (LttvTracesetContextClass), |
| 509 | NULL, /* base_init */ |
| 510 | NULL, /* base_finalize */ |
| 511 | (GClassInitFunc) traceset_context_class_init, /* class_init */ |
| 512 | NULL, /* class_finalize */ |
| 513 | NULL, /* class_data */ |
| 514 | sizeof (LttvTracesetContext), |
| 515 | 0, /* n_preallocs */ |
| 516 | (GInstanceInitFunc) traceset_context_instance_init, /* instance_init */ |
| 517 | NULL /* Value handling */ |
| 518 | }; |
| 519 | |
| 520 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTracesetContextType", |
| 521 | &info, 0); |
| 522 | } |
| 523 | return type; |
| 524 | } |
| 525 | |
| 526 | |
| 527 | static void |
| 528 | trace_context_instance_init (GTypeInstance *instance, gpointer g_class) |
| 529 | { |
| 530 | /* Be careful of anything which would not work well with shallow copies */ |
| 531 | } |
| 532 | |
| 533 | |
| 534 | static void trace_context_finalize (LttvTraceContext *self) |
| 535 | { |
| 536 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACE_CONTEXT_TYPE)))-> |
| 537 | finalize(G_OBJECT(self)); |
| 538 | } |
| 539 | |
| 540 | |
| 541 | static void trace_context_class_init (LttvTraceContextClass *klass) |
| 542 | { |
| 543 | GObjectClass *gobject_class = G_OBJECT_CLASS(klass); |
| 544 | |
| 545 | gobject_class->finalize = (void (*)(GObject *self)) trace_context_finalize; |
| 546 | } |
| 547 | |
| 548 | |
| 549 | GType lttv_trace_context_get_type(void) |
| 550 | { |
| 551 | static GType type = 0; |
| 552 | if (type == 0) { |
| 553 | static const GTypeInfo info = { |
| 554 | sizeof (LttvTraceContextClass), |
| 555 | NULL, /* base_init */ |
| 556 | NULL, /* base_finalize */ |
| 557 | (GClassInitFunc) trace_context_class_init, /* class_init */ |
| 558 | NULL, /* class_finalize */ |
| 559 | NULL, /* class_data */ |
| 560 | sizeof (LttvTraceContext), |
| 561 | 0, /* n_preallocs */ |
| 562 | (GInstanceInitFunc) trace_context_instance_init, /* instance_init */ |
| 563 | NULL /* Value handling */ |
| 564 | }; |
| 565 | |
| 566 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTraceContextType", |
| 567 | &info, 0); |
| 568 | } |
| 569 | return type; |
| 570 | } |
| 571 | |
| 572 | |
| 573 | static void tracefile_context_instance_init (GTypeInstance *instance, |
| 574 | gpointer g_class) |
| 575 | { |
| 576 | /* Be careful of anything which would not work well with shallow copies */ |
| 577 | } |
| 578 | |
| 579 | |
| 580 | static void tracefile_context_finalize (LttvTracefileContext *self) |
| 581 | { |
| 582 | G_OBJECT_CLASS(g_type_class_peek(g_type_parent(LTTV_TRACEFILE_CONTEXT_TYPE))) |
| 583 | ->finalize(G_OBJECT(self)); |
| 584 | } |
| 585 | |
| 586 | |
| 587 | static void 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 lttv_tracefile_context_get_type(void) |
| 596 | { |
| 597 | static GType type = 0; |
| 598 | if (type == 0) { |
| 599 | static const GTypeInfo info = { |
| 600 | sizeof (LttvTracefileContextClass), |
| 601 | NULL, /* base_init */ |
| 602 | NULL, /* base_finalize */ |
| 603 | (GClassInitFunc) tracefile_context_class_init, /* class_init */ |
| 604 | NULL, /* class_finalize */ |
| 605 | NULL, /* class_data */ |
| 606 | sizeof (LttvTracefileContext), |
| 607 | 0, /* n_preallocs */ |
| 608 | (GInstanceInitFunc) tracefile_context_instance_init, /* instance_init */ |
| 609 | NULL /* Value handling */ |
| 610 | }; |
| 611 | |
| 612 | type = g_type_register_static (G_TYPE_OBJECT, "LttvTracefileContextType", |
| 613 | &info, 0); |
| 614 | } |
| 615 | return type; |
| 616 | } |
| 617 | |
| 618 | |
| 619 | |
| 620 | static gboolean get_first(gpointer key, gpointer value, gpointer user_data) { |
| 621 | g_assert(key == value); |
| 622 | *((LttvTracefileContext **)user_data) = (LttvTracefileContext *)value; |
| 623 | return TRUE; |
| 624 | } |
| 625 | |
| 626 | #ifdef DEBUG |
| 627 | // Test to see if pqueue is traversed in the right order. |
| 628 | static LttTime test_time; |
| 629 | |
| 630 | static gboolean test_tree(gpointer key, gpointer value, gpointer user_data) { |
| 631 | |
| 632 | LttvTracefileContext *tfc = (LttvTracefileContext *)key; |
| 633 | |
| 634 | g_debug("Tracefile name %s, time %lu.%lu, tfi %u, ti %u", |
| 635 | g_quark_to_string(ltt_tracefile_name(tfc->tf)), |
| 636 | tfc->timestamp.tv_sec, tfc->timestamp.tv_nsec, |
| 637 | tfc->index, tfc->t_context->index); |
| 638 | |
| 639 | if(user_data != NULL) { |
| 640 | if(((LttvTracefileContext *)user_data) == (LttvTracefileContext *)value) { |
| 641 | g_assert(compare_tracefile(user_data, value) == 0); |
| 642 | } else |
| 643 | g_assert(compare_tracefile(user_data, value) != 0); |
| 644 | } |
| 645 | g_assert(ltt_time_compare(test_time, tfc->timestamp) <= 0); |
| 646 | test_time.tv_sec = tfc->timestamp.tv_sec; |
| 647 | test_time.tv_nsec = tfc->timestamp.tv_nsec; |
| 648 | |
| 649 | |
| 650 | //g_assert(((LttvTracefileContext *)user_data) != (LttvTracefileContext *)value); |
| 651 | return FALSE; |
| 652 | } |
| 653 | #endif //DEBUG |
| 654 | |
| 655 | |
| 656 | |
| 657 | void lttv_process_traceset_begin(LttvTracesetContext *self, |
| 658 | LttvHooks *before_traceset, |
| 659 | LttvHooks *before_trace, |
| 660 | LttvHooks *before_tracefile, |
| 661 | LttvHooks *event, |
| 662 | LttvHooksByIdChannelArray *event_by_id_channel) |
| 663 | { |
| 664 | |
| 665 | /* simply add hooks in context. _before hooks are called by add_hooks. */ |
| 666 | /* It calls all before_traceset, before_trace, and before_tracefile hooks. */ |
| 667 | lttv_traceset_context_add_hooks(self, |
| 668 | before_traceset, |
| 669 | before_trace, |
| 670 | before_tracefile, |
| 671 | event, |
| 672 | event_by_id_channel); |
| 673 | |
| 674 | } |
| 675 | |
| 676 | //enum read_state { LAST_NONE, LAST_OK, LAST_EMPTY }; |
| 677 | |
| 678 | /* Note : a _middle must be preceded from a _seek or another middle */ |
| 679 | guint lttv_process_traceset_middle(LttvTracesetContext *self, |
| 680 | LttTime end, |
| 681 | gulong nb_events, |
| 682 | const LttvTracesetContextPosition *end_position) |
| 683 | { |
| 684 | GTree *pqueue = self->pqueue; |
| 685 | |
| 686 | LttvTracefileContext *tfc; |
| 687 | |
| 688 | LttEvent *e; |
| 689 | |
| 690 | unsigned count = 0; |
| 691 | |
| 692 | guint read_ret; |
| 693 | |
| 694 | //enum read_state last_read_state = LAST_NONE; |
| 695 | |
| 696 | gint last_ret = 0; /* return value of the last hook list called */ |
| 697 | |
| 698 | /* Get the next event from the pqueue, call its hooks, |
| 699 | reinsert in the pqueue the following event from the same tracefile |
| 700 | unless the tracefile is finished or the event is later than the |
| 701 | end time. */ |
| 702 | |
| 703 | while(TRUE) { |
| 704 | tfc = NULL; |
| 705 | g_tree_foreach(pqueue, get_first, &tfc); |
| 706 | /* End of traceset : tfc is NULL */ |
| 707 | if(unlikely(tfc == NULL)) |
| 708 | { |
| 709 | return count; |
| 710 | } |
| 711 | |
| 712 | /* Have we reached : |
| 713 | * - the maximum number of events specified? |
| 714 | * - the end position ? |
| 715 | * - the end time ? |
| 716 | * then the read is finished. We leave the queue in the same state and |
| 717 | * break the loop. |
| 718 | */ |
| 719 | |
| 720 | if(unlikely(last_ret == TRUE |
| 721 | || ((count >= nb_events) && (nb_events != G_MAXULONG)) |
| 722 | || (end_position!=NULL&<tv_traceset_context_ctx_pos_compare(self, |
| 723 | end_position) == 0) |
| 724 | || ltt_time_compare(end, tfc->timestamp) <= 0)) |
| 725 | { |
| 726 | return count; |
| 727 | } |
| 728 | |
| 729 | /* Get the tracefile with an event for the smallest time found. If two |
| 730 | or more tracefiles have events for the same time, hope that lookup |
| 731 | and remove are consistent. */ |
| 732 | |
| 733 | #ifdef DEBUG |
| 734 | test_time.tv_sec = 0; |
| 735 | test_time.tv_nsec = 0; |
| 736 | g_debug("test tree before remove"); |
| 737 | g_tree_foreach(pqueue, test_tree, tfc); |
| 738 | #endif //DEBUG |
| 739 | g_tree_remove(pqueue, tfc); |
| 740 | |
| 741 | #ifdef DEBUG |
| 742 | test_time.tv_sec = 0; |
| 743 | test_time.tv_nsec = 0; |
| 744 | g_debug("test tree after remove"); |
| 745 | g_tree_foreach(pqueue, test_tree, tfc); |
| 746 | #endif //DEBUG |
| 747 | |
| 748 | |
| 749 | e = ltt_tracefile_get_event(tfc->tf); |
| 750 | |
| 751 | //if(last_read_state != LAST_EMPTY) { |
| 752 | /* Only call hooks if the last read has given an event or if we are at the |
| 753 | * first pass (not if last read returned end of tracefile) */ |
| 754 | count++; |
| 755 | |
| 756 | tfc->target_pid = -1; /* unset target PID */ |
| 757 | /* Hooks : |
| 758 | * return values : 0 : continue read, 1 : go to next position and stop read, |
| 759 | * 2 : stay at the current position and stop read */ |
| 760 | last_ret = lttv_hooks_call_merge(tfc->event, tfc, |
| 761 | lttv_hooks_by_id_get(tfc->event_by_id, e->event_id), tfc); |
| 762 | |
| 763 | #if 0 |
| 764 | /* This is buggy : it won't work well with state computation */ |
| 765 | if(unlikely(last_ret == 2)) { |
| 766 | /* This is a case where we want to stay at this position and stop read. */ |
| 767 | g_tree_insert(pqueue, tfc, tfc); |
| 768 | return count - 1; |
| 769 | } |
| 770 | #endif //0 |
| 771 | read_ret = ltt_tracefile_read(tfc->tf); |
| 772 | |
| 773 | |
| 774 | if(likely(!read_ret)) { |
| 775 | //g_debug("An event is ready"); |
| 776 | tfc->timestamp = ltt_event_time(e); |
| 777 | g_assert(ltt_time_compare(tfc->timestamp, ltt_time_infinite) != 0); |
| 778 | g_tree_insert(pqueue, tfc, tfc); |
| 779 | #ifdef DEBUG |
| 780 | test_time.tv_sec = 0; |
| 781 | test_time.tv_nsec = 0; |
| 782 | g_debug("test tree after event ready"); |
| 783 | g_tree_foreach(pqueue, test_tree, NULL); |
| 784 | #endif //DEBUG |
| 785 | |
| 786 | //last_read_state = LAST_OK; |
| 787 | } else { |
| 788 | tfc->timestamp = ltt_time_infinite; |
| 789 | |
| 790 | if(read_ret == ERANGE) { |
| 791 | // last_read_state = LAST_EMPTY; |
| 792 | g_debug("End of trace"); |
| 793 | } else |
| 794 | g_error("Error happened in lttv_process_traceset_middle"); |
| 795 | } |
| 796 | } |
| 797 | } |
| 798 | |
| 799 | |
| 800 | void lttv_process_traceset_end(LttvTracesetContext *self, |
| 801 | LttvHooks *after_traceset, |
| 802 | LttvHooks *after_trace, |
| 803 | LttvHooks *after_tracefile, |
| 804 | LttvHooks *event, |
| 805 | LttvHooksByIdChannelArray *event_by_id_channel) |
| 806 | { |
| 807 | /* Remove hooks from context. _after hooks are called by remove_hooks. */ |
| 808 | /* It calls all after_traceset, after_trace, and after_tracefile hooks. */ |
| 809 | lttv_traceset_context_remove_hooks(self, |
| 810 | after_traceset, |
| 811 | after_trace, |
| 812 | after_tracefile, |
| 813 | event, |
| 814 | event_by_id_channel); |
| 815 | } |
| 816 | |
| 817 | /* Subtile modification : |
| 818 | * if tracefile has no event at or after the time requested, it is not put in |
| 819 | * the queue, as the next read would fail. |
| 820 | * |
| 821 | * Don't forget to empty the traceset pqueue before calling this. |
| 822 | */ |
| 823 | void lttv_process_trace_seek_time(LttvTraceContext *self, LttTime start) |
| 824 | { |
| 825 | guint i, nb_tracefile; |
| 826 | |
| 827 | gint ret; |
| 828 | |
| 829 | LttvTracefileContext **tfc; |
| 830 | |
| 831 | nb_tracefile = self->tracefiles->len; |
| 832 | |
| 833 | GTree *pqueue = self->ts_context->pqueue; |
| 834 | |
| 835 | for(i = 0 ; i < nb_tracefile ; i++) { |
| 836 | tfc = &g_array_index(self->tracefiles, LttvTracefileContext*, i); |
| 837 | |
| 838 | g_tree_remove(pqueue, *tfc); |
| 839 | |
| 840 | ret = ltt_tracefile_seek_time((*tfc)->tf, start); |
| 841 | if(ret == EPERM) g_error("error in lttv_process_trace_seek_time seek"); |
| 842 | |
| 843 | if(ret == 0) { /* not ERANGE especially */ |
| 844 | (*tfc)->timestamp = ltt_event_time(ltt_tracefile_get_event((*tfc)->tf)); |
| 845 | g_assert(ltt_time_compare((*tfc)->timestamp, ltt_time_infinite) != 0); |
| 846 | g_tree_insert(pqueue, (*tfc), (*tfc)); |
| 847 | } else { |
| 848 | (*tfc)->timestamp = ltt_time_infinite; |
| 849 | } |
| 850 | } |
| 851 | #ifdef DEBUG |
| 852 | test_time.tv_sec = 0; |
| 853 | test_time.tv_nsec = 0; |
| 854 | g_debug("test tree after seek_time"); |
| 855 | g_tree_foreach(pqueue, test_tree, NULL); |
| 856 | #endif //DEBUG |
| 857 | } |
| 858 | |
| 859 | |
| 860 | void lttv_process_traceset_seek_time(LttvTracesetContext *self, LttTime start) |
| 861 | { |
| 862 | guint i, nb_trace; |
| 863 | |
| 864 | LttvTraceContext *tc; |
| 865 | |
| 866 | //g_tree_destroy(self->pqueue); |
| 867 | //self->pqueue = g_tree_new(compare_tracefile); |
| 868 | |
| 869 | nb_trace = lttv_traceset_number(self->ts); |
| 870 | for(i = 0 ; i < nb_trace ; i++) { |
| 871 | tc = self->traces[i]; |
| 872 | lttv_process_trace_seek_time(tc, start); |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | |
| 877 | gboolean lttv_process_traceset_seek_position(LttvTracesetContext *self, |
| 878 | const LttvTracesetContextPosition *pos) |
| 879 | { |
| 880 | guint i; |
| 881 | /* If a position is set, seek the traceset to this position */ |
| 882 | if(ltt_time_compare(pos->timestamp, ltt_time_infinite) != 0) { |
| 883 | |
| 884 | /* Test to see if the traces has been added to the trace set : |
| 885 | * It should NEVER happen. Clear all positions if a new trace comes in. */ |
| 886 | /* FIXME I know this test is not optimal : should keep a number of |
| 887 | * tracefiles variable in the traceset.. eventually */ |
| 888 | guint num_traces = lttv_traceset_number(self->ts); |
| 889 | guint tf_count = 0; |
| 890 | for(i=0; i<num_traces;i++) { |
| 891 | GArray * tracefiles = self->traces[i]->tracefiles; |
| 892 | guint j; |
| 893 | guint num_tracefiles = tracefiles->len; |
| 894 | for(j=0;j<num_tracefiles;j++) |
| 895 | tf_count++; |
| 896 | } |
| 897 | g_assert(tf_count == pos->tfcp->len); |
| 898 | |
| 899 | |
| 900 | //g_tree_destroy(self->pqueue); |
| 901 | //self->pqueue = g_tree_new(compare_tracefile); |
| 902 | |
| 903 | for(i=0;i<pos->tfcp->len; i++) { |
| 904 | LttvTracefileContextPosition *tfcp = |
| 905 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
| 906 | |
| 907 | g_tree_remove(self->pqueue, tfcp->tfc); |
| 908 | |
| 909 | if(tfcp->used == TRUE) { |
| 910 | if(ltt_tracefile_seek_position(tfcp->tfc->tf, tfcp->event) != 0) |
| 911 | return 1; |
| 912 | tfcp->tfc->timestamp = |
| 913 | ltt_event_time(ltt_tracefile_get_event(tfcp->tfc->tf)); |
| 914 | g_assert(ltt_time_compare(tfcp->tfc->timestamp, |
| 915 | ltt_time_infinite) != 0); |
| 916 | g_tree_insert(self->pqueue, tfcp->tfc, tfcp->tfc); |
| 917 | |
| 918 | } else { |
| 919 | tfcp->tfc->timestamp = ltt_time_infinite; |
| 920 | } |
| 921 | } |
| 922 | } |
| 923 | #ifdef DEBUG |
| 924 | test_time.tv_sec = 0; |
| 925 | test_time.tv_nsec = 0; |
| 926 | g_debug("test tree after seek_position"); |
| 927 | g_tree_foreach(self->pqueue, test_tree, NULL); |
| 928 | #endif //DEBUG |
| 929 | |
| 930 | |
| 931 | |
| 932 | return 0; |
| 933 | } |
| 934 | |
| 935 | |
| 936 | #if 0 // pmf: temporary disable |
| 937 | static LttField * |
| 938 | find_field(LttEventType *et, const GQuark field) |
| 939 | { |
| 940 | LttField *f; |
| 941 | |
| 942 | if(field == 0) return NULL; |
| 943 | |
| 944 | f = ltt_eventtype_field_by_name(et, field); |
| 945 | if (!f) { |
| 946 | g_warning("Cannot find field %s in event %s.%s", g_quark_to_string(field), |
| 947 | g_quark_to_string(ltt_facility_name(ltt_eventtype_facility(et))), |
| 948 | g_quark_to_string(ltt_eventtype_name(et))); |
| 949 | } |
| 950 | |
| 951 | return f; |
| 952 | } |
| 953 | #endif |
| 954 | |
| 955 | struct marker_info *lttv_trace_hook_get_marker(LttTrace *t, LttvTraceHook *th) |
| 956 | { |
| 957 | return marker_get_info_from_id(th->mdata, th->id); |
| 958 | } |
| 959 | |
| 960 | int lttv_trace_find_hook(LttTrace *t, GQuark channel_name, GQuark event_name, |
| 961 | GQuark fields[], LttvHook h, gpointer hook_data, |
| 962 | GArray **trace_hooks) |
| 963 | { |
| 964 | struct marker_info *info; |
| 965 | guint16 marker_id; |
| 966 | int init_array_size; |
| 967 | GArray *group; |
| 968 | struct marker_data *mdata; |
| 969 | |
| 970 | group = g_datalist_id_get_data(&t->tracefiles, channel_name); |
| 971 | if (unlikely(!group || group->len == 0)) { |
| 972 | g_info("No channel for marker named %s.%s found", |
| 973 | g_quark_to_string(channel_name), g_quark_to_string(event_name)); |
| 974 | return 1; |
| 975 | } |
| 976 | |
| 977 | mdata = g_array_index (group, LttTracefile, 0).mdata; |
| 978 | info = marker_get_info_from_name(mdata, event_name); |
| 979 | if(unlikely(info == NULL)) { |
| 980 | g_info("No marker named %s.%s found", |
| 981 | g_quark_to_string(channel_name), g_quark_to_string(event_name)); |
| 982 | return 1; |
| 983 | } |
| 984 | |
| 985 | init_array_size = (*trace_hooks)->len; |
| 986 | |
| 987 | /* for each marker with the requested name */ |
| 988 | do { |
| 989 | LttvTraceHook tmpth; |
| 990 | int found; |
| 991 | GQuark *f; |
| 992 | struct marker_field *marker_field; |
| 993 | |
| 994 | marker_id = marker_get_id_from_info(mdata, info); |
| 995 | |
| 996 | tmpth.h = h; |
| 997 | tmpth.mdata = mdata; |
| 998 | tmpth.channel = channel_name; |
| 999 | tmpth.id = marker_id; |
| 1000 | tmpth.hook_data = hook_data; |
| 1001 | tmpth.fields = g_ptr_array_new(); |
| 1002 | |
| 1003 | /* for each field requested */ |
| 1004 | for(f = fields; f && *f != 0; f++) { |
| 1005 | found = 0; |
| 1006 | for_each_marker_field(marker_field, info) { |
| 1007 | if(marker_field->name == *f) { |
| 1008 | found = 1; |
| 1009 | g_ptr_array_add(tmpth.fields, marker_field); |
| 1010 | break; |
| 1011 | } |
| 1012 | } |
| 1013 | if(!found) { |
| 1014 | /* Did not find the one of the fields in this instance of the |
| 1015 | marker. Print a warning and skip this marker completely. |
| 1016 | Still iterate on other markers with same name. */ |
| 1017 | g_ptr_array_free(tmpth.fields, TRUE); |
| 1018 | g_info("Field %s cannot be found in marker %s.%s", |
| 1019 | g_quark_to_string(*f), g_quark_to_string(channel_name), |
| 1020 | g_quark_to_string(event_name)); |
| 1021 | goto skip_marker; |
| 1022 | } |
| 1023 | } |
| 1024 | /* all fields were found: add the tracehook to the array */ |
| 1025 | *trace_hooks = g_array_append_val(*trace_hooks, tmpth); |
| 1026 | skip_marker: |
| 1027 | info = info->next; |
| 1028 | } while(info != NULL); |
| 1029 | |
| 1030 | /* Error if no new trace hook has been added */ |
| 1031 | if (init_array_size == (*trace_hooks)->len) { |
| 1032 | g_info("No marker of name %s.%s has all requested fields", |
| 1033 | g_quark_to_string(channel_name), g_quark_to_string(event_name)); |
| 1034 | return 1; |
| 1035 | } |
| 1036 | return 0; |
| 1037 | } |
| 1038 | |
| 1039 | void lttv_trace_hook_remove_all(GArray **th) |
| 1040 | { |
| 1041 | int i; |
| 1042 | for(i=0; i<(*th)->len; i++) { |
| 1043 | g_ptr_array_free(g_array_index(*th, LttvTraceHook, i).fields, TRUE); |
| 1044 | } |
| 1045 | if((*th)->len) |
| 1046 | *th = g_array_remove_range(*th, 0, (*th)->len); |
| 1047 | } |
| 1048 | |
| 1049 | LttvTracesetContextPosition * |
| 1050 | lttv_traceset_context_position_new(const LttvTracesetContext *self) |
| 1051 | { |
| 1052 | guint num_traces = lttv_traceset_number(self->ts); |
| 1053 | guint tf_count = 0; |
| 1054 | guint i; |
| 1055 | |
| 1056 | for(i=0; i<num_traces;i++) { |
| 1057 | GArray * tracefiles = self->traces[i]->tracefiles; |
| 1058 | guint j; |
| 1059 | guint num_tracefiles = tracefiles->len; |
| 1060 | for(j=0;j<num_tracefiles;j++) |
| 1061 | tf_count++; |
| 1062 | } |
| 1063 | LttvTracesetContextPosition *pos = g_new(LttvTracesetContextPosition, 1); |
| 1064 | pos->tfcp = g_array_sized_new(FALSE, TRUE, |
| 1065 | sizeof(LttvTracefileContextPosition), |
| 1066 | tf_count); |
| 1067 | g_array_set_size(pos->tfcp, tf_count); |
| 1068 | for(i=0;i<pos->tfcp->len;i++) { |
| 1069 | LttvTracefileContextPosition *tfcp = |
| 1070 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
| 1071 | tfcp->event = ltt_event_position_new(); |
| 1072 | } |
| 1073 | |
| 1074 | pos->timestamp = ltt_time_infinite; |
| 1075 | return pos; |
| 1076 | } |
| 1077 | |
| 1078 | /* Save all positions, the ones with infinite time will have NULL |
| 1079 | * ep. */ |
| 1080 | /* note : a position must be destroyed when a trace is added/removed from a |
| 1081 | * traceset */ |
| 1082 | void lttv_traceset_context_position_save(const LttvTracesetContext *self, |
| 1083 | LttvTracesetContextPosition *pos) |
| 1084 | { |
| 1085 | guint i; |
| 1086 | guint num_traces = lttv_traceset_number(self->ts); |
| 1087 | guint tf_count = 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 | g_assert(tf_count < pos->tfcp->len); |
| 1098 | LttvTracefileContext **tfc = &g_array_index(tracefiles, |
| 1099 | LttvTracefileContext*, j); |
| 1100 | LttvTracefileContextPosition *tfcp = |
| 1101 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, tf_count); |
| 1102 | |
| 1103 | tfcp->tfc = *tfc; |
| 1104 | |
| 1105 | if(ltt_time_compare((*tfc)->timestamp, ltt_time_infinite) != 0) { |
| 1106 | LttEvent *event = ltt_tracefile_get_event((*tfc)->tf); |
| 1107 | ltt_event_position(event, tfcp->event); |
| 1108 | if(ltt_time_compare((*tfc)->timestamp, pos->timestamp) < 0) |
| 1109 | pos->timestamp = (*tfc)->timestamp; |
| 1110 | tfcp->used = TRUE; |
| 1111 | } else { |
| 1112 | tfcp->used = FALSE; |
| 1113 | } |
| 1114 | |
| 1115 | //g_array_append_val(pos->tfc, *tfc); |
| 1116 | //g_array_append_val(pos->ep, ep); |
| 1117 | tf_count++; |
| 1118 | } |
| 1119 | |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | void lttv_traceset_context_position_destroy(LttvTracesetContextPosition *pos) |
| 1124 | { |
| 1125 | int i; |
| 1126 | |
| 1127 | for(i=0;i<pos->tfcp->len;i++) { |
| 1128 | LttvTracefileContextPosition *tfcp = |
| 1129 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
| 1130 | g_free(tfcp->event); |
| 1131 | tfcp->event = NULL; |
| 1132 | tfcp->used = FALSE; |
| 1133 | } |
| 1134 | g_array_free(pos->tfcp, TRUE); |
| 1135 | g_free(pos); |
| 1136 | } |
| 1137 | |
| 1138 | void lttv_traceset_context_position_copy(LttvTracesetContextPosition *dest, |
| 1139 | const LttvTracesetContextPosition *src) |
| 1140 | { |
| 1141 | int i; |
| 1142 | LttvTracefileContextPosition *src_tfcp, *dest_tfcp; |
| 1143 | |
| 1144 | g_assert(src->tfcp->len == dest->tfcp->len); |
| 1145 | |
| 1146 | for(i=0;i<src->tfcp->len;i++) { |
| 1147 | src_tfcp = |
| 1148 | &g_array_index(src->tfcp, LttvTracefileContextPosition, i); |
| 1149 | dest_tfcp = |
| 1150 | &g_array_index(dest->tfcp, LttvTracefileContextPosition, i); |
| 1151 | |
| 1152 | dest_tfcp->used = src_tfcp->used; |
| 1153 | dest_tfcp->tfc = src_tfcp->tfc; |
| 1154 | |
| 1155 | if(src_tfcp->used) { |
| 1156 | ltt_event_position_copy( |
| 1157 | dest_tfcp->event, |
| 1158 | src_tfcp->event); |
| 1159 | } |
| 1160 | } |
| 1161 | dest->timestamp = src->timestamp; |
| 1162 | } |
| 1163 | |
| 1164 | gint lttv_traceset_context_ctx_pos_compare(const LttvTracesetContext *self, |
| 1165 | const LttvTracesetContextPosition *pos) |
| 1166 | { |
| 1167 | int i; |
| 1168 | int ret = 0; |
| 1169 | |
| 1170 | if(pos->tfcp->len == 0) { |
| 1171 | if(lttv_traceset_number(self->ts) == 0) return 0; |
| 1172 | else return 1; |
| 1173 | } |
| 1174 | if(lttv_traceset_number(self->ts) == 0) |
| 1175 | return -1; |
| 1176 | |
| 1177 | for(i=0;i<pos->tfcp->len;i++) { |
| 1178 | LttvTracefileContextPosition *tfcp = |
| 1179 | &g_array_index(pos->tfcp, LttvTracefileContextPosition, i); |
| 1180 | |
| 1181 | if(tfcp->used == FALSE) { |
| 1182 | if(ltt_time_compare(tfcp->tfc->timestamp, ltt_time_infinite) < 0) { |
| 1183 | ret = -1; |
| 1184 | } |
| 1185 | } else { |
| 1186 | if(ltt_time_compare(tfcp->tfc->timestamp, ltt_time_infinite) == 0) { |
| 1187 | ret = 1; |
| 1188 | } else { |
| 1189 | LttEvent *event = ltt_tracefile_get_event(tfcp->tfc->tf); |
| 1190 | |
| 1191 | ret = ltt_event_position_compare((LttEventPosition*)event, |
| 1192 | tfcp->event); |
| 1193 | } |
| 1194 | } |
| 1195 | if(ret != 0) return ret; |
| 1196 | |
| 1197 | } |
| 1198 | return 0; |
| 1199 | } |
| 1200 | |
| 1201 | |
| 1202 | gint |
| 1203 | lttv_traceset_context_pos_pos_compare(const LttvTracesetContextPosition *pos1, |
| 1204 | const LttvTracesetContextPosition *pos2) |
| 1205 | { |
| 1206 | int i, j; |
| 1207 | int ret = 0; |
| 1208 | |
| 1209 | if(ltt_time_compare(pos1->timestamp, ltt_time_infinite) == 0) { |
| 1210 | if(ltt_time_compare(pos2->timestamp, ltt_time_infinite) == 0) |
| 1211 | return 0; |
| 1212 | else |
| 1213 | return 1; |
| 1214 | } |
| 1215 | if(ltt_time_compare(pos2->timestamp, ltt_time_infinite) == 0) |
| 1216 | return -1; |
| 1217 | |
| 1218 | for(i=0;i<pos1->tfcp->len;i++) { |
| 1219 | LttvTracefileContextPosition *tfcp1 = |
| 1220 | &g_array_index(pos1->tfcp, LttvTracefileContextPosition, i); |
| 1221 | |
| 1222 | if(tfcp1->used == TRUE) { |
| 1223 | for(j=0;j<pos2->tfcp->len;j++) { |
| 1224 | LttvTracefileContextPosition *tfcp2 = |
| 1225 | &g_array_index(pos2->tfcp, LttvTracefileContextPosition, j); |
| 1226 | |
| 1227 | if(tfcp1->tfc == tfcp2->tfc) { |
| 1228 | if(tfcp2->used == TRUE) |
| 1229 | ret = ltt_event_position_compare(tfcp1->event, tfcp2->event); |
| 1230 | else |
| 1231 | ret = -1; |
| 1232 | |
| 1233 | if(ret != 0) return ret; |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | } else { |
| 1238 | for(j=0;j<pos2->tfcp->len;j++) { |
| 1239 | LttvTracefileContextPosition *tfcp2 = |
| 1240 | &g_array_index(pos2->tfcp, LttvTracefileContextPosition, j); |
| 1241 | |
| 1242 | if(tfcp1->tfc == tfcp2->tfc) |
| 1243 | if(tfcp2->used == TRUE) ret = 1; |
| 1244 | if(ret != 0) return ret; |
| 1245 | } |
| 1246 | } |
| 1247 | } |
| 1248 | return 0; |
| 1249 | } |
| 1250 | |
| 1251 | |
| 1252 | LttTime |
| 1253 | lttv_traceset_context_position_get_time(const LttvTracesetContextPosition *pos) |
| 1254 | { |
| 1255 | return pos->timestamp; |
| 1256 | } |
| 1257 | |
| 1258 | |
| 1259 | LttvTracefileContext * |
| 1260 | lttv_traceset_context_get_current_tfc(LttvTracesetContext *self) |
| 1261 | { |
| 1262 | GTree *pqueue = self->pqueue; |
| 1263 | LttvTracefileContext *tfc = NULL; |
| 1264 | |
| 1265 | g_tree_foreach(pqueue, get_first, &tfc); |
| 1266 | |
| 1267 | return tfc; |
| 1268 | } |
| 1269 | |
| 1270 | /* lttv_process_traceset_synchronize_tracefiles |
| 1271 | * |
| 1272 | * Use the sync_position field of the trace set context to synchronize each |
| 1273 | * tracefile with the previously saved position. |
| 1274 | * |
| 1275 | * If no previous position has been saved, it simply does nothing. |
| 1276 | */ |
| 1277 | void lttv_process_traceset_synchronize_tracefiles(LttvTracesetContext *tsc) |
| 1278 | { |
| 1279 | int retval; |
| 1280 | |
| 1281 | retval= lttv_process_traceset_seek_position(tsc, tsc->sync_position); |
| 1282 | g_assert_cmpint(retval, ==, 0); |
| 1283 | } |
| 1284 | |
| 1285 | |
| 1286 | |
| 1287 | |
| 1288 | void lttv_process_traceset_get_sync_data(LttvTracesetContext *tsc) |
| 1289 | { |
| 1290 | lttv_traceset_context_position_save(tsc, tsc->sync_position); |
| 1291 | } |
| 1292 | |
| 1293 | struct seek_back_data { |
| 1294 | guint first_event; /* Index of the first event in the array : we will always |
| 1295 | overwrite at this position : this is a circular array. |
| 1296 | */ |
| 1297 | guint events_found; |
| 1298 | guint n; /* number of events requested */ |
| 1299 | GPtrArray *array; /* array of LttvTracesetContextPositions pointers */ |
| 1300 | LttvFilter *filter1; |
| 1301 | LttvFilter *filter2; |
| 1302 | LttvFilter *filter3; |
| 1303 | gpointer data; |
| 1304 | check_handler *check; |
| 1305 | gboolean *stop_flag; |
| 1306 | guint raw_event_count; |
| 1307 | }; |
| 1308 | |
| 1309 | static gint seek_back_event_hook(void *hook_data, void* call_data) |
| 1310 | { |
| 1311 | struct seek_back_data *sd = (struct seek_back_data*)hook_data; |
| 1312 | LttvTracefileContext *tfc = (LttvTracefileContext*)call_data; |
| 1313 | LttvTracesetContext *tsc = tfc->t_context->ts_context; |
| 1314 | LttvTracesetContextPosition *pos; |
| 1315 | |
| 1316 | if(sd->check && sd->check(sd->raw_event_count, sd->stop_flag, sd->data)) |
| 1317 | return TRUE; |
| 1318 | sd->raw_event_count++; |
| 1319 | |
| 1320 | if(sd->filter1 != NULL && sd->filter1->head != NULL && |
| 1321 | !lttv_filter_tree_parse(sd->filter1->head, |
| 1322 | ltt_tracefile_get_event(tfc->tf), |
| 1323 | tfc->tf, |
| 1324 | tfc->t_context->t, |
| 1325 | tfc,NULL,NULL)) { |
| 1326 | return FALSE; |
| 1327 | } |
| 1328 | if(sd->filter2 != NULL && sd->filter2->head != NULL && |
| 1329 | !lttv_filter_tree_parse(sd->filter2->head, |
| 1330 | ltt_tracefile_get_event(tfc->tf), |
| 1331 | tfc->tf, |
| 1332 | tfc->t_context->t, |
| 1333 | tfc,NULL,NULL)) { |
| 1334 | return FALSE; |
| 1335 | } |
| 1336 | if(sd->filter3 != NULL && sd->filter3->head != NULL && |
| 1337 | !lttv_filter_tree_parse(sd->filter3->head, |
| 1338 | ltt_tracefile_get_event(tfc->tf), |
| 1339 | tfc->tf, |
| 1340 | tfc->t_context->t, |
| 1341 | tfc,NULL,NULL)) { |
| 1342 | return FALSE; |
| 1343 | } |
| 1344 | |
| 1345 | pos = (LttvTracesetContextPosition*)g_ptr_array_index (sd->array, |
| 1346 | sd->first_event); |
| 1347 | |
| 1348 | lttv_traceset_context_position_save(tsc, pos); |
| 1349 | |
| 1350 | if(sd->first_event >= sd->array->len - 1) sd->first_event = 0; |
| 1351 | else sd->first_event++; |
| 1352 | |
| 1353 | sd->events_found = min(sd->n, sd->events_found + 1); |
| 1354 | |
| 1355 | return FALSE; |
| 1356 | } |
| 1357 | |
| 1358 | /* Seek back n events back from the current position. |
| 1359 | * |
| 1360 | * Parameters : |
| 1361 | * @self The trace set context |
| 1362 | * @n number of events to jump over |
| 1363 | * @first_offset The initial offset value used. |
| 1364 | * never put first_offset at ltt_time_zero. |
| 1365 | * @time_seeker Function pointer of the function to use to seek time : |
| 1366 | * either lttv_process_traceset_seek_time |
| 1367 | * or lttv_state_traceset_seek_time_closest |
| 1368 | * @filter The filter to call. |
| 1369 | * |
| 1370 | * Return value : the number of events found (might be lower than the number |
| 1371 | * requested if beginning of traceset is reached). |
| 1372 | * |
| 1373 | * The first search will go back first_offset and try to find the last n events |
| 1374 | * matching the filter. If there are not enough, it will try to go back from the |
| 1375 | * new trace point from first_offset*2, and so on, until beginning of trace or n |
| 1376 | * events are found. |
| 1377 | * |
| 1378 | * Note : this function does not take in account the LttvFilter : use the |
| 1379 | * similar function found in state.c instead. |
| 1380 | * |
| 1381 | * Note2 : the caller must make sure that the LttvTracesetContext does not |
| 1382 | * contain any hook, as process_traceset_middle is used in this routine. |
| 1383 | */ |
| 1384 | guint lttv_process_traceset_seek_n_backward(LttvTracesetContext *self, |
| 1385 | guint n, LttTime first_offset, |
| 1386 | seek_time_fct time_seeker, |
| 1387 | check_handler *check, |
| 1388 | gboolean *stop_flag, |
| 1389 | LttvFilter *filter1, |
| 1390 | LttvFilter *filter2, |
| 1391 | LttvFilter *filter3, |
| 1392 | gpointer data) |
| 1393 | { |
| 1394 | if(lttv_traceset_number(self->ts) == 0) return 0; |
| 1395 | g_assert(ltt_time_compare(first_offset, ltt_time_zero) != 0); |
| 1396 | |
| 1397 | guint i; |
| 1398 | LttvTracesetContextPosition *next_iter_end_pos = |
| 1399 | lttv_traceset_context_position_new(self); |
| 1400 | LttvTracesetContextPosition *end_pos = |
| 1401 | lttv_traceset_context_position_new(self); |
| 1402 | LttvTracesetContextPosition *saved_pos = |
| 1403 | lttv_traceset_context_position_new(self); |
| 1404 | LttTime time; |
| 1405 | LttTime asked_time; |
| 1406 | LttTime time_offset; |
| 1407 | struct seek_back_data sd; |
| 1408 | LttvHooks *hooks = lttv_hooks_new(); |
| 1409 | int retval; |
| 1410 | |
| 1411 | sd.first_event = 0; |
| 1412 | sd.events_found = 0; |
| 1413 | sd.array = g_ptr_array_sized_new(n); |
| 1414 | sd.filter1 = filter1; |
| 1415 | sd.filter2 = filter2; |
| 1416 | sd.filter3 = filter3; |
| 1417 | sd.data = data; |
| 1418 | sd.n = n; |
| 1419 | sd.check = check; |
| 1420 | sd.stop_flag = stop_flag; |
| 1421 | sd.raw_event_count = 0; |
| 1422 | g_ptr_array_set_size(sd.array, n); |
| 1423 | for(i=0;i<n;i++) { |
| 1424 | g_ptr_array_index (sd.array, i) = lttv_traceset_context_position_new(self); |
| 1425 | } |
| 1426 | |
| 1427 | lttv_traceset_context_position_save(self, next_iter_end_pos); |
| 1428 | lttv_traceset_context_position_save(self, saved_pos); |
| 1429 | /* Get the current time from which we will offset */ |
| 1430 | time = lttv_traceset_context_position_get_time(next_iter_end_pos); |
| 1431 | /* the position saved might be end of traceset... */ |
| 1432 | if(ltt_time_compare(time, self->time_span.end_time) > 0) { |
| 1433 | time = self->time_span.end_time; |
| 1434 | } |
| 1435 | time_offset = first_offset; |
| 1436 | |
| 1437 | lttv_hooks_add(hooks, seek_back_event_hook, &sd, LTTV_PRIO_DEFAULT); |
| 1438 | |
| 1439 | lttv_process_traceset_begin(self, NULL, NULL, NULL, hooks, NULL); |
| 1440 | |
| 1441 | while(1) { |
| 1442 | lttv_traceset_context_position_copy(end_pos, next_iter_end_pos); |
| 1443 | |
| 1444 | /* We must seek the traceset back to time - time_offset */ |
| 1445 | /* this time becomes the new reference time */ |
| 1446 | if(ltt_time_compare(time, time_offset) > 0) |
| 1447 | time = ltt_time_sub(time, time_offset); |
| 1448 | else |
| 1449 | time = self->time_span.start_time; |
| 1450 | asked_time = time; |
| 1451 | |
| 1452 | time_seeker(self, time); |
| 1453 | lttv_traceset_context_position_save(self, next_iter_end_pos); |
| 1454 | /* Resync the time in case of a seek_closest */ |
| 1455 | time = lttv_traceset_context_position_get_time(next_iter_end_pos); |
| 1456 | if(ltt_time_compare(time, self->time_span.end_time) > 0) { |
| 1457 | time = self->time_span.end_time; |
| 1458 | } |
| 1459 | |
| 1460 | /* Process the traceset, calling a hook which adds events |
| 1461 | * to the array, overwriting the tail. It changes first_event and |
| 1462 | * events_found too. */ |
| 1463 | /* We would like to have a clean context here : no other hook than our's */ |
| 1464 | |
| 1465 | lttv_process_traceset_middle(self, ltt_time_infinite, |
| 1466 | G_MAXUINT, end_pos); |
| 1467 | |
| 1468 | /* stop criteria : - n events found |
| 1469 | * - asked_time < beginning of trace */ |
| 1470 | if(sd.events_found < n) { |
| 1471 | if(sd.first_event > 0) { |
| 1472 | /* Save the first position */ |
| 1473 | LttvTracesetContextPosition *pos = |
| 1474 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, 0); |
| 1475 | lttv_traceset_context_position_copy(saved_pos, pos); |
| 1476 | } |
| 1477 | g_assert(n-sd.events_found <= sd.array->len); |
| 1478 | /* Change array size to n - events_found */ |
| 1479 | for(i=n-sd.events_found;i<sd.array->len;i++) { |
| 1480 | LttvTracesetContextPosition *pos = |
| 1481 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, i); |
| 1482 | lttv_traceset_context_position_destroy(pos); |
| 1483 | } |
| 1484 | g_ptr_array_set_size(sd.array, n-sd.events_found); |
| 1485 | sd.first_event = 0; |
| 1486 | |
| 1487 | /* |
| 1488 | * Did not fill our event list and started before the beginning of the |
| 1489 | * trace. There is no hope to fill it then. |
| 1490 | * It is OK to compare with trace start time here because we explicitely |
| 1491 | * seeked by time (not by position), so we cannot miss multiple event |
| 1492 | * happening exactly at trace start. |
| 1493 | */ |
| 1494 | if(ltt_time_compare(asked_time, self->time_span.start_time) == 0) |
| 1495 | break; |
| 1496 | |
| 1497 | } else break; /* Second end criterion : n events found */ |
| 1498 | |
| 1499 | time_offset = ltt_time_mul(time_offset, BACKWARD_SEEK_MUL); |
| 1500 | } |
| 1501 | |
| 1502 | lttv_traceset_context_position_destroy(end_pos); |
| 1503 | lttv_traceset_context_position_destroy(next_iter_end_pos); |
| 1504 | |
| 1505 | lttv_process_traceset_end(self, NULL, NULL, NULL, hooks, NULL); |
| 1506 | |
| 1507 | if(sd.events_found >= n) { |
| 1508 | /* Seek the traceset to the first event in the circular array */ |
| 1509 | LttvTracesetContextPosition *pos = |
| 1510 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, |
| 1511 | sd.first_event); |
| 1512 | retval= lttv_process_traceset_seek_position(self, pos); |
| 1513 | g_assert_cmpint(retval, ==, 0); |
| 1514 | } else { |
| 1515 | /* Will seek to the last saved position : in the worst case, it will be the |
| 1516 | * original position (if events_found is 0) */ |
| 1517 | retval= lttv_process_traceset_seek_position(self, saved_pos); |
| 1518 | g_assert_cmpint(retval, ==, 0); |
| 1519 | } |
| 1520 | |
| 1521 | for(i=0;i<sd.array->len;i++) { |
| 1522 | LttvTracesetContextPosition *pos = |
| 1523 | (LttvTracesetContextPosition*)g_ptr_array_index (sd.array, i); |
| 1524 | lttv_traceset_context_position_destroy(pos); |
| 1525 | } |
| 1526 | g_ptr_array_free(sd.array, TRUE); |
| 1527 | |
| 1528 | lttv_hooks_destroy(hooks); |
| 1529 | |
| 1530 | lttv_traceset_context_position_destroy(saved_pos); |
| 1531 | |
| 1532 | return sd.events_found; |
| 1533 | } |
| 1534 | |
| 1535 | |
| 1536 | struct seek_forward_data { |
| 1537 | guint event_count; /* event counter */ |
| 1538 | guint n; /* requested number of events to jump over */ |
| 1539 | LttvFilter *filter1; |
| 1540 | LttvFilter *filter2; |
| 1541 | LttvFilter *filter3; |
| 1542 | gpointer data; |
| 1543 | check_handler *check; |
| 1544 | gboolean *stop_flag; |
| 1545 | guint raw_event_count; /* event counter */ |
| 1546 | }; |
| 1547 | |
| 1548 | static gint seek_forward_event_hook(void *hook_data, void* call_data) |
| 1549 | { |
| 1550 | struct seek_forward_data *sd = (struct seek_forward_data*)hook_data; |
| 1551 | LttvTracefileContext *tfc = (LttvTracefileContext*)call_data; |
| 1552 | |
| 1553 | if(sd->check && sd->check(sd->raw_event_count, sd->stop_flag, sd->data)) |
| 1554 | return TRUE; |
| 1555 | sd->raw_event_count++; |
| 1556 | |
| 1557 | if(sd->filter1 != NULL && sd->filter1->head != NULL && |
| 1558 | !lttv_filter_tree_parse(sd->filter1->head, |
| 1559 | ltt_tracefile_get_event(tfc->tf), |
| 1560 | tfc->tf, |
| 1561 | tfc->t_context->t, |
| 1562 | tfc,NULL,NULL)) { |
| 1563 | return FALSE; |
| 1564 | } |
| 1565 | if(sd->filter2 != NULL && sd->filter2->head != NULL && |
| 1566 | !lttv_filter_tree_parse(sd->filter2->head, |
| 1567 | ltt_tracefile_get_event(tfc->tf), |
| 1568 | tfc->tf, |
| 1569 | tfc->t_context->t, |
| 1570 | tfc,NULL,NULL)) { |
| 1571 | return FALSE; |
| 1572 | } |
| 1573 | if(sd->filter3 != NULL && sd->filter3->head != NULL && |
| 1574 | !lttv_filter_tree_parse(sd->filter3->head, |
| 1575 | ltt_tracefile_get_event(tfc->tf), |
| 1576 | tfc->tf, |
| 1577 | tfc->t_context->t, |
| 1578 | tfc,NULL,NULL)) { |
| 1579 | return FALSE; |
| 1580 | } |
| 1581 | |
| 1582 | sd->event_count++; |
| 1583 | if(sd->event_count >= sd->n) |
| 1584 | return TRUE; |
| 1585 | return FALSE; |
| 1586 | } |
| 1587 | |
| 1588 | /* Seek back n events forward from the current position (1 to n) |
| 1589 | * 0 is ok too, but it will actually do nothing. |
| 1590 | * |
| 1591 | * Parameters : |
| 1592 | * @self the trace set context |
| 1593 | * @n number of events to jump over |
| 1594 | * @filter filter to call. |
| 1595 | * |
| 1596 | * returns : the number of events jumped over (may be less than requested if end |
| 1597 | * of traceset reached) */ |
| 1598 | guint lttv_process_traceset_seek_n_forward(LttvTracesetContext *self, |
| 1599 | guint n, |
| 1600 | check_handler *check, |
| 1601 | gboolean *stop_flag, |
| 1602 | LttvFilter *filter1, |
| 1603 | LttvFilter *filter2, |
| 1604 | LttvFilter *filter3, |
| 1605 | gpointer data) |
| 1606 | { |
| 1607 | struct seek_forward_data sd; |
| 1608 | sd.event_count = 0; |
| 1609 | sd.n = n; |
| 1610 | sd.filter1 = filter1; |
| 1611 | sd.filter2 = filter2; |
| 1612 | sd.filter3 = filter3; |
| 1613 | sd.data = data; |
| 1614 | sd.check = check; |
| 1615 | sd.stop_flag = stop_flag; |
| 1616 | sd.raw_event_count = 0; |
| 1617 | |
| 1618 | if(sd.event_count >= sd.n) return sd.event_count; |
| 1619 | |
| 1620 | LttvHooks *hooks = lttv_hooks_new(); |
| 1621 | |
| 1622 | lttv_hooks_add(hooks, seek_forward_event_hook, &sd, LTTV_PRIO_DEFAULT); |
| 1623 | |
| 1624 | lttv_process_traceset_begin(self, NULL, NULL, NULL, hooks, NULL); |
| 1625 | |
| 1626 | /* it will end on the end of traceset, or the fact that the |
| 1627 | * hook returns TRUE. |
| 1628 | */ |
| 1629 | lttv_process_traceset_middle(self, ltt_time_infinite, |
| 1630 | G_MAXUINT, NULL); |
| 1631 | |
| 1632 | /* Here, our position is either the end of traceset, or the exact position |
| 1633 | * after n events : leave it like this. This might be placed on an event that |
| 1634 | * will be filtered out, we don't care : all we know is that the following |
| 1635 | * event filtered in will be the right one. */ |
| 1636 | |
| 1637 | lttv_process_traceset_end(self, NULL, NULL, NULL, hooks, NULL); |
| 1638 | |
| 1639 | lttv_hooks_destroy(hooks); |
| 1640 | |
| 1641 | return sd.event_count; |
| 1642 | } |
| 1643 | |
| 1644 | |