| 1 | /* This file is part of the Linux Trace Toolkit viewer |
| 2 | * Copyright (C) 2005 Peter Ho |
| 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 | |
| 20 | #include <math.h> |
| 21 | |
| 22 | #include <glib.h> |
| 23 | #include <gtk/gtk.h> |
| 24 | #include <gdk/gdk.h> |
| 25 | #include <stdio.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <string.h> |
| 28 | #include <ltt/ltt.h> |
| 29 | #include <ltt/event.h> |
| 30 | #include <ltt/type.h> |
| 31 | #include <ltt/trace.h> |
| 32 | #include <ltt/facility.h> |
| 33 | #include <lttv/module.h> |
| 34 | #include <lttv/hook.h> |
| 35 | #include <lttv/tracecontext.h> |
| 36 | #include <lttv/state.h> |
| 37 | #include <lttv/filter.h> |
| 38 | #include <lttvwindow/lttvwindow.h> |
| 39 | #include <ltt/time.h> |
| 40 | |
| 41 | #include "hDiskPerformanceInsert.xpm" |
| 42 | |
| 43 | |
| 44 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
| 45 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
| 46 | #define TRACE_NUMBER 0 |
| 47 | #define NO_ITEMS 0 |
| 48 | |
| 49 | enum{ |
| 50 | DISKNAME_COLUMN, |
| 51 | BYTES_RD_COLUMN, |
| 52 | BYTES_RD_SEC_COLUMN, |
| 53 | NUM_RD_COLUMN, |
| 54 | BYTES_WR_COLUMN, |
| 55 | BYTES_WR_SEC_COLUMN, |
| 56 | NUM_WR_COLUMN, |
| 57 | N_COLUMNS |
| 58 | }; |
| 59 | |
| 60 | enum operation_t { |
| 61 | LTTV_READ_OPERATION = 1, |
| 62 | LTTV_WRITE_OPERATION |
| 63 | }; |
| 64 | |
| 65 | typedef struct _DiskPerformanceData { |
| 66 | |
| 67 | Tab * tab; |
| 68 | |
| 69 | LttvHooks * hooks_trace_after; |
| 70 | |
| 71 | LttvHooks * hooks_trace_before; |
| 72 | /* time window */ |
| 73 | TimeWindow time_window; |
| 74 | |
| 75 | GtkWidget * scroll_win; |
| 76 | |
| 77 | /* Model containing list data */ |
| 78 | GtkListStore *store_m; |
| 79 | |
| 80 | GtkWidget *hbox_v; |
| 81 | |
| 82 | /* Widget to display the data in a columned list */ |
| 83 | GtkWidget *tree_v; |
| 84 | |
| 85 | /* Selection handler */ |
| 86 | GtkTreeSelection *select_c; |
| 87 | |
| 88 | GArray *disk_array; |
| 89 | |
| 90 | LttvHooksById * event_by_id_hooks; |
| 91 | |
| 92 | } DiskPerformanceData; |
| 93 | |
| 94 | |
| 95 | typedef struct _lttv_block { |
| 96 | guint major_number; |
| 97 | guint minor_number; |
| 98 | guint size; |
| 99 | } lttv_block; |
| 100 | |
| 101 | typedef struct _lttv_total_block { |
| 102 | char diskname[10]; |
| 103 | guint64 total_bytes_read; |
| 104 | guint num_read_operations; |
| 105 | guint64 total_bytes_written; |
| 106 | guint num_write_operations; |
| 107 | |
| 108 | } lttv_total_block; |
| 109 | |
| 110 | GSList *g_disk_data_list = NULL ; |
| 111 | |
| 112 | |
| 113 | |
| 114 | /* facility */ |
| 115 | GQuark LTT_FACILITY_BLOCK; |
| 116 | |
| 117 | /* events */ |
| 118 | GQuark LTT_EVENT_BLOCK_READ; |
| 119 | GQuark LTT_EVENT_BLOCK_WRITE; |
| 120 | |
| 121 | static DiskPerformanceData *disk_performance_data(Tab *tab); |
| 122 | static void disk_destroy_walk(gpointer data, gpointer user_data); |
| 123 | static gboolean disk_show(void *hook_data, void *call_data); |
| 124 | static gboolean trace_header(void *hook_data, void *call_data); |
| 125 | static gboolean disk_update_time_window(void * hook_data, void * call_data); |
| 126 | static void request_event( DiskPerformanceData *disk_performance); |
| 127 | void gui_disperformance_free(DiskPerformanceData *event_viewer_data); |
| 128 | static void get_event_detail(LttEvent *e, lttv_block* disk_data); |
| 129 | static char * major_minor_to_diskname( lttv_block* disk_data); |
| 130 | static void sum_data(char* diskname, guint size, enum operation_t opt, GArray *disk_array); |
| 131 | static GtkWidget *disk_performance(Tab * tab); |
| 132 | |
| 133 | static gboolean block_read_callback(void *hook_data, void *call_data); |
| 134 | |
| 135 | static gboolean block_write_callback(void *hook_data, void *call_data); |
| 136 | |
| 137 | |
| 138 | static gboolean disk_show(void *hook_data, void *call_data){ |
| 139 | |
| 140 | guint i; |
| 141 | lttv_total_block element; |
| 142 | GtkTreeIter iter; |
| 143 | LttTime time_interval; |
| 144 | guint64 time_interval_64; |
| 145 | guint64 temp_variable; |
| 146 | guint64 bytes_read_per_sec, bytes_written_per_sec; |
| 147 | g_info(" diskperformance: disk_show() \n"); |
| 148 | DiskPerformanceData *disk_performance = (DiskPerformanceData *)hook_data; |
| 149 | GArray *disk_array = disk_performance->disk_array; |
| 150 | time_interval = ltt_time_sub(disk_performance->time_window.end_time, disk_performance->time_window.start_time); |
| 151 | |
| 152 | time_interval_64 = time_interval.tv_sec; |
| 153 | time_interval_64 *= NANOSECONDS_PER_SECOND; |
| 154 | time_interval_64 += time_interval.tv_nsec; |
| 155 | gtk_list_store_clear(disk_performance->store_m); |
| 156 | for(i = 0; i < disk_array->len; i++){ |
| 157 | |
| 158 | element = g_array_index(disk_array,lttv_total_block,i); |
| 159 | temp_variable = element.total_bytes_read * NANOSECONDS_PER_SECOND; |
| 160 | bytes_read_per_sec = (guint64) temp_variable / time_interval_64; |
| 161 | |
| 162 | temp_variable = element.total_bytes_written * NANOSECONDS_PER_SECOND; |
| 163 | bytes_written_per_sec = (guint64) temp_variable / time_interval_64; |
| 164 | |
| 165 | gtk_list_store_append (disk_performance->store_m, &iter); |
| 166 | gtk_list_store_set (disk_performance->store_m, &iter, |
| 167 | DISKNAME_COLUMN, element.diskname, |
| 168 | BYTES_RD_COLUMN, element.total_bytes_read, |
| 169 | BYTES_RD_SEC_COLUMN,bytes_read_per_sec, |
| 170 | NUM_RD_COLUMN, element.num_read_operations, |
| 171 | BYTES_WR_COLUMN, element.total_bytes_written, |
| 172 | BYTES_WR_SEC_COLUMN, bytes_written_per_sec, |
| 173 | NUM_WR_COLUMN, element.num_write_operations, |
| 174 | -1); |
| 175 | |
| 176 | } |
| 177 | if(disk_performance->disk_array->len) |
| 178 | g_array_remove_range (disk_performance->disk_array,0,disk_performance->disk_array->len); |
| 179 | return FALSE; |
| 180 | } |
| 181 | |
| 182 | static gboolean trace_header(void *hook_data, void *call_data){ |
| 183 | return FALSE; |
| 184 | } |
| 185 | |
| 186 | |
| 187 | static gboolean disk_update_time_window(void * hook_data, void * call_data){ |
| 188 | |
| 189 | DiskPerformanceData *disk_performance = (DiskPerformanceData *) hook_data; |
| 190 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
| 191 | disk_performance->time_window = *time_window_nofify_data->new_time_window; |
| 192 | Tab *tab = disk_performance->tab; |
| 193 | lttvwindow_events_request_remove_all(tab, disk_performance); |
| 194 | request_event( disk_performance); |
| 195 | |
| 196 | |
| 197 | return FALSE; |
| 198 | } |
| 199 | |
| 200 | void gui_disperformance_free(DiskPerformanceData *eventdata){ |
| 201 | Tab *tab = eventdata->tab; |
| 202 | g_info("disperformance.c : gui_disperformance_free, %p", eventdata); |
| 203 | g_info("%p, %p", eventdata, tab); |
| 204 | if(tab != NULL) |
| 205 | { |
| 206 | g_array_free (eventdata->disk_array, TRUE); |
| 207 | |
| 208 | lttvwindow_unregister_time_window_notify(tab, |
| 209 | disk_update_time_window, |
| 210 | eventdata); |
| 211 | |
| 212 | lttvwindow_events_request_remove_all(eventdata->tab, |
| 213 | eventdata); |
| 214 | g_disk_data_list = g_slist_remove(g_disk_data_list, eventdata); |
| 215 | } |
| 216 | g_free(eventdata); |
| 217 | g_info("disperformance.c : gui_disperformance_free end, %p", eventdata); |
| 218 | } |
| 219 | |
| 220 | |
| 221 | |
| 222 | |
| 223 | |
| 224 | |
| 225 | void disk_destructor_full(DiskPerformanceData *disk_data) |
| 226 | { |
| 227 | |
| 228 | if(GTK_IS_WIDGET(disk_data->hbox_v)) |
| 229 | gtk_widget_destroy(disk_data->hbox_v); |
| 230 | |
| 231 | } |
| 232 | |
| 233 | static void disk_destroy_walk(gpointer data, gpointer user_data) |
| 234 | { |
| 235 | g_info("Walk destroy GUI disk performance Viewer"); |
| 236 | disk_destructor_full((DiskPerformanceData*)data); |
| 237 | } |
| 238 | /** |
| 239 | * init function |
| 240 | * |
| 241 | * |
| 242 | * This is the entry point of the viewer. |
| 243 | * |
| 244 | */ |
| 245 | static void init() |
| 246 | { |
| 247 | |
| 248 | g_info("Init diskPerformance.c"); |
| 249 | |
| 250 | LTT_FACILITY_BLOCK = g_quark_from_string("block"); |
| 251 | LTT_EVENT_BLOCK_READ = g_quark_from_string("read"); |
| 252 | LTT_EVENT_BLOCK_WRITE = g_quark_from_string("write"); |
| 253 | |
| 254 | lttvwindow_register_constructor("diskperformance", |
| 255 | "/", |
| 256 | "Insert Disk Performance", |
| 257 | hDiskPerformanceInsert_xpm, |
| 258 | "Insert Disk Performance", |
| 259 | disk_performance); |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * Constructor hook |
| 264 | * |
| 265 | */ |
| 266 | GtkWidget *disk_performance(Tab * tab) |
| 267 | { |
| 268 | |
| 269 | DiskPerformanceData* disk_data = disk_performance_data(tab); |
| 270 | if(disk_data) |
| 271 | return disk_data->hbox_v; |
| 272 | else |
| 273 | return NULL; |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * This function initializes the Event Viewer functionnality through the |
| 278 | * GTK API. |
| 279 | */ |
| 280 | DiskPerformanceData *disk_performance_data(Tab *tab) |
| 281 | { |
| 282 | LttTime end; |
| 283 | GtkTreeViewColumn *column; |
| 284 | GtkCellRenderer *renderer; |
| 285 | DiskPerformanceData* disk_data = g_new(DiskPerformanceData,1) ; |
| 286 | |
| 287 | g_info("enter disk_performance_data \n"); |
| 288 | |
| 289 | disk_data->tab = tab; |
| 290 | disk_data->time_window = lttvwindow_get_time_window(tab); |
| 291 | |
| 292 | disk_data->disk_array = g_array_new(FALSE, FALSE, sizeof(lttv_total_block )); |
| 293 | |
| 294 | lttvwindow_register_time_window_notify(tab, |
| 295 | disk_update_time_window, |
| 296 | disk_data); |
| 297 | |
| 298 | disk_data->scroll_win = gtk_scrolled_window_new (NULL, NULL); |
| 299 | gtk_widget_show (disk_data->scroll_win); |
| 300 | gtk_scrolled_window_set_policy( |
| 301 | GTK_SCROLLED_WINDOW(disk_data->scroll_win), |
| 302 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); |
| 303 | |
| 304 | /* Create a model for storing the data list */ |
| 305 | disk_data->store_m = gtk_list_store_new ( |
| 306 | N_COLUMNS, /* Total number of columns */ |
| 307 | G_TYPE_STRING, /* Diskname */ |
| 308 | G_TYPE_INT64, /* Bytes read */ |
| 309 | G_TYPE_INT64, /* Bytes read/sec */ |
| 310 | G_TYPE_INT, |
| 311 | G_TYPE_INT64, /* bytes written */ |
| 312 | G_TYPE_INT64, /* bytes written/sec */ |
| 313 | G_TYPE_INT |
| 314 | ); |
| 315 | |
| 316 | disk_data->tree_v = gtk_tree_view_new_with_model (GTK_TREE_MODEL (disk_data->store_m)); |
| 317 | |
| 318 | g_object_unref (G_OBJECT (disk_data->store_m)); |
| 319 | |
| 320 | renderer = gtk_cell_renderer_text_new (); |
| 321 | |
| 322 | column = gtk_tree_view_column_new_with_attributes ("DiskName", |
| 323 | renderer, |
| 324 | "text", DISKNAME_COLUMN, |
| 325 | NULL); |
| 326 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 327 | gtk_tree_view_column_set_fixed_width (column, 45); |
| 328 | gtk_tree_view_append_column (GTK_TREE_VIEW (disk_data->tree_v), column); |
| 329 | |
| 330 | renderer = gtk_cell_renderer_text_new (); |
| 331 | column = gtk_tree_view_column_new_with_attributes ("BytesRead", |
| 332 | renderer, |
| 333 | "text", BYTES_RD_COLUMN, |
| 334 | NULL); |
| 335 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 336 | gtk_tree_view_column_set_fixed_width (column, 220); |
| 337 | gtk_tree_view_append_column (GTK_TREE_VIEW (disk_data->tree_v), column); |
| 338 | |
| 339 | renderer = gtk_cell_renderer_text_new (); |
| 340 | column = gtk_tree_view_column_new_with_attributes ("BytesRead/sec", |
| 341 | renderer, |
| 342 | "text", BYTES_RD_SEC_COLUMN, |
| 343 | NULL); |
| 344 | gtk_tree_view_column_set_alignment (column, 1.0); |
| 345 | gtk_tree_view_column_set_fixed_width (column, 220); |
| 346 | gtk_tree_view_append_column (GTK_TREE_VIEW (disk_data->tree_v), column); |
| 347 | |
| 348 | renderer = gtk_cell_renderer_text_new (); |
| 349 | column = gtk_tree_view_column_new_with_attributes ("NumReadOperations", |
| 350 | renderer, |
| 351 | "text",NUM_RD_COLUMN, |
| 352 | NULL); |
| 353 | gtk_tree_view_column_set_alignment (column, 1.0); |
| 354 | gtk_tree_view_column_set_fixed_width (column, 220); |
| 355 | gtk_tree_view_append_column (GTK_TREE_VIEW (disk_data->tree_v), column); |
| 356 | |
| 357 | renderer = gtk_cell_renderer_text_new (); |
| 358 | column = gtk_tree_view_column_new_with_attributes ("BytesWritten", |
| 359 | renderer, |
| 360 | "text", BYTES_WR_COLUMN, |
| 361 | NULL); |
| 362 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 363 | gtk_tree_view_column_set_fixed_width (column, 145); |
| 364 | gtk_tree_view_append_column (GTK_TREE_VIEW (disk_data->tree_v), column); |
| 365 | |
| 366 | renderer = gtk_cell_renderer_text_new (); |
| 367 | column = gtk_tree_view_column_new_with_attributes ("BytesWritten/sec", |
| 368 | renderer, |
| 369 | "text", BYTES_WR_SEC_COLUMN, |
| 370 | NULL); |
| 371 | gtk_tree_view_column_set_alignment (column, 1.0); |
| 372 | gtk_tree_view_column_set_fixed_width (column, 220); |
| 373 | gtk_tree_view_append_column (GTK_TREE_VIEW (disk_data->tree_v), column); |
| 374 | |
| 375 | renderer = gtk_cell_renderer_text_new (); |
| 376 | column = gtk_tree_view_column_new_with_attributes ("NumWriteOperations", |
| 377 | renderer, |
| 378 | "text",NUM_WR_COLUMN, |
| 379 | NULL); |
| 380 | gtk_tree_view_column_set_alignment (column, 0.0); |
| 381 | gtk_tree_view_column_set_fixed_width (column, 145); |
| 382 | gtk_tree_view_append_column (GTK_TREE_VIEW (disk_data->tree_v), column); |
| 383 | |
| 384 | disk_data->select_c = gtk_tree_view_get_selection (GTK_TREE_VIEW (disk_data->tree_v)); |
| 385 | gtk_tree_selection_set_mode (disk_data->select_c, GTK_SELECTION_SINGLE); |
| 386 | |
| 387 | gtk_container_add (GTK_CONTAINER (disk_data->scroll_win), disk_data->tree_v); |
| 388 | |
| 389 | disk_data->hbox_v = gtk_hbox_new(0, 0); |
| 390 | gtk_box_pack_start(GTK_BOX(disk_data->hbox_v), disk_data->scroll_win, TRUE, TRUE, 0); |
| 391 | |
| 392 | gtk_widget_show(disk_data->hbox_v); |
| 393 | gtk_widget_show(disk_data->tree_v); |
| 394 | |
| 395 | |
| 396 | g_disk_data_list = g_slist_append(g_disk_data_list, disk_data); |
| 397 | g_object_set_data_full(G_OBJECT(disk_data->hbox_v), |
| 398 | "disk_data", |
| 399 | disk_data, |
| 400 | (GDestroyNotify)gui_disperformance_free); |
| 401 | |
| 402 | request_event(disk_data); |
| 403 | return disk_data; |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * |
| 408 | * For each trace in the traceset, this function: |
| 409 | * - calls lttv_trace_find_hook() & registers a hook function to event_by_id_hooks |
| 410 | * - registers a callback function to each hook |
| 411 | * - calls lttvwindow_events_request() to request data in a specific |
| 412 | * time interval to the main window |
| 413 | * |
| 414 | */ |
| 415 | static void request_event(DiskPerformanceData *disk_performance) |
| 416 | { |
| 417 | guint i, k, l, nb_trace; |
| 418 | |
| 419 | GArray *hooks; |
| 420 | |
| 421 | guint ret; |
| 422 | |
| 423 | LttvTraceHook *hook; |
| 424 | |
| 425 | LttvTraceState *ts; |
| 426 | |
| 427 | LttvTraceHookByFacility *thf; |
| 428 | |
| 429 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(disk_performance->tab); |
| 430 | /* Get the traceset */ |
| 431 | LttvTraceset *traceset = tsc->ts; |
| 432 | |
| 433 | nb_trace = lttv_traceset_number(traceset); |
| 434 | |
| 435 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
| 436 | { |
| 437 | EventsRequest *events_request = g_new(EventsRequest, 1); |
| 438 | |
| 439 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
| 440 | |
| 441 | hooks = g_array_set_size(hooks, 2); |
| 442 | |
| 443 | /* Get a trace state */ |
| 444 | ts = (LttvTraceState *)tsc->traces[i]; |
| 445 | |
| 446 | disk_performance->event_by_id_hooks = lttv_hooks_by_id_new(); |
| 447 | /* Register event_by_id_hooks with a callback function */ |
| 448 | ret = lttv_trace_find_hook(ts->parent.t, |
| 449 | LTT_FACILITY_BLOCK, LTT_EVENT_BLOCK_READ, |
| 450 | 0, 0, 0, |
| 451 | block_read_callback, |
| 452 | disk_performance, |
| 453 | &g_array_index(hooks, LttvTraceHook, 0)); |
| 454 | |
| 455 | ret = lttv_trace_find_hook(ts->parent.t, |
| 456 | LTT_FACILITY_BLOCK, LTT_EVENT_BLOCK_WRITE, |
| 457 | 0, 0, 0, |
| 458 | block_write_callback, |
| 459 | disk_performance, |
| 460 | &g_array_index(hooks, LttvTraceHook, 1)); |
| 461 | |
| 462 | g_assert(!ret); |
| 463 | |
| 464 | /*iterate through the facility list*/ |
| 465 | for(k = 0 ; k < hooks->len; k++) |
| 466 | { |
| 467 | hook = &g_array_index(hooks, LttvTraceHook, k); |
| 468 | for(l=0; l<hook->fac_list->len; l++) |
| 469 | { |
| 470 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
| 471 | lttv_hooks_add(lttv_hooks_by_id_find(disk_performance->event_by_id_hooks, thf->id), |
| 472 | thf->h, |
| 473 | disk_performance, |
| 474 | LTTV_PRIO_DEFAULT); |
| 475 | |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | disk_performance->hooks_trace_after = lttv_hooks_new(); |
| 480 | /* Registers a hook function */ |
| 481 | lttv_hooks_add(disk_performance->hooks_trace_after, disk_show, disk_performance, LTTV_PRIO_DEFAULT); |
| 482 | |
| 483 | disk_performance->hooks_trace_before = lttv_hooks_new(); |
| 484 | /* Registers a hook function */ |
| 485 | lttv_hooks_add(disk_performance->hooks_trace_before, trace_header, disk_performance, LTTV_PRIO_DEFAULT); |
| 486 | |
| 487 | /* Initalize the EventsRequest structure */ |
| 488 | events_request->owner = disk_performance; |
| 489 | events_request->viewer_data = disk_performance; |
| 490 | events_request->servicing = FALSE; |
| 491 | events_request->start_time = disk_performance->time_window.start_time; |
| 492 | events_request->start_position = NULL; |
| 493 | events_request->stop_flag = FALSE; |
| 494 | events_request->end_time = disk_performance->time_window.end_time; |
| 495 | events_request->num_events = G_MAXUINT; |
| 496 | events_request->end_position = NULL; |
| 497 | events_request->trace = i; |
| 498 | events_request->hooks = hooks; |
| 499 | events_request->before_chunk_traceset = NULL; |
| 500 | events_request->before_chunk_trace = disk_performance->hooks_trace_before; |
| 501 | events_request->before_chunk_tracefile= NULL; |
| 502 | events_request->event = NULL; |
| 503 | events_request->event_by_id = disk_performance->event_by_id_hooks; |
| 504 | events_request->after_chunk_tracefile = NULL; |
| 505 | events_request->after_chunk_trace = NULL; |
| 506 | events_request->after_chunk_traceset = NULL; |
| 507 | events_request->before_request = NULL; |
| 508 | events_request->after_request = disk_performance->hooks_trace_after; |
| 509 | |
| 510 | lttvwindow_events_request(disk_performance->tab, events_request); |
| 511 | } |
| 512 | |
| 513 | } |
| 514 | |
| 515 | /** |
| 516 | * This function is called whenever a read event occurs. |
| 517 | * |
| 518 | */ |
| 519 | static gboolean block_read_callback(void *hook_data, void *call_data) |
| 520 | { |
| 521 | LttEvent *e; |
| 522 | LttTime event_time; |
| 523 | unsigned cpu_id; |
| 524 | lttv_block block_read; |
| 525 | char *diskname; |
| 526 | |
| 527 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
| 528 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
| 529 | DiskPerformanceData *disk_performance = (DiskPerformanceData *)hook_data; |
| 530 | GArray *disk_array = disk_performance->disk_array; |
| 531 | e = ltt_tracefile_get_event(tfc->tf); |
| 532 | event_time = ltt_event_time(e); |
| 533 | cpu_id = ltt_event_cpu_id(e); |
| 534 | if ((ltt_time_compare(event_time,disk_performance->time_window.start_time) == TRUE) && |
| 535 | (ltt_time_compare(disk_performance->time_window.end_time,event_time) == TRUE)) |
| 536 | { |
| 537 | get_event_detail(e, &block_read); |
| 538 | diskname = major_minor_to_diskname(&block_read); |
| 539 | sum_data(diskname, block_read.size,LTTV_READ_OPERATION, disk_array); |
| 540 | |
| 541 | |
| 542 | } |
| 543 | return FALSE; |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * This function is called whenever a write event occurs. |
| 548 | * |
| 549 | */ |
| 550 | static gboolean block_write_callback(void *hook_data, void *call_data) |
| 551 | { |
| 552 | LttEvent *e; |
| 553 | LttTime event_time; |
| 554 | unsigned cpu_id; |
| 555 | lttv_block block_write; |
| 556 | char *diskname; |
| 557 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
| 558 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
| 559 | DiskPerformanceData *disk_performance = (DiskPerformanceData *)hook_data; |
| 560 | GArray *disk_array = disk_performance->disk_array; |
| 561 | e = ltt_tracefile_get_event(tfc->tf); |
| 562 | event_time = ltt_event_time(e); |
| 563 | cpu_id = ltt_event_cpu_id(e); |
| 564 | if ((ltt_time_compare(event_time,disk_performance->time_window.start_time) == TRUE) && |
| 565 | (ltt_time_compare(disk_performance->time_window.end_time,event_time) == TRUE)) |
| 566 | { |
| 567 | get_event_detail(e, &block_write); |
| 568 | diskname = major_minor_to_diskname(&block_write); |
| 569 | sum_data(diskname, block_write.size,LTTV_WRITE_OPERATION, disk_array); |
| 570 | } |
| 571 | return FALSE; |
| 572 | } |
| 573 | |
| 574 | /** |
| 575 | * This function extracts the major, minor and size |
| 576 | * |
| 577 | */ |
| 578 | static void get_event_detail(LttEvent *e, lttv_block* disk_data) |
| 579 | { |
| 580 | guint i, num_fields; |
| 581 | LttEventType *event_type; |
| 582 | LttField *element; |
| 583 | LttField *field; |
| 584 | event_type = ltt_event_eventtype(e); |
| 585 | num_fields = ltt_eventtype_num_fields(event_type); |
| 586 | |
| 587 | for(i = 0 ; i < num_fields ; i++) |
| 588 | { |
| 589 | element = ltt_eventtype_field(event_type,i); |
| 590 | if(i== 0) |
| 591 | disk_data->major_number = ltt_event_get_long_unsigned(e, element); |
| 592 | if(i== 1) |
| 593 | disk_data->minor_number = ltt_event_get_long_unsigned(e, element); |
| 594 | if(i==2) |
| 595 | disk_data->size = ltt_event_get_long_unsigned(e, element); |
| 596 | } |
| 597 | |
| 598 | } |
| 599 | |
| 600 | /** |
| 601 | * This function convert the major and minor number to the corresponding disk |
| 602 | * |
| 603 | */ |
| 604 | static char * major_minor_to_diskname( lttv_block* disk_data) |
| 605 | { |
| 606 | if (disk_data->major_number == 3 && disk_data->minor_number == 0) |
| 607 | return "hda"; |
| 608 | if (disk_data->major_number == 4 && disk_data->minor_number == 0) |
| 609 | return "hdb"; |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * This function calculates: the number of operations, the total bytes read or written, |
| 614 | * the average number of bytes read or written by sec. |
| 615 | */ |
| 616 | static void sum_data(char* diskname, guint size, enum operation_t operation, GArray *disk_array) |
| 617 | { |
| 618 | |
| 619 | lttv_total_block data; |
| 620 | lttv_total_block *element; |
| 621 | guint i; |
| 622 | gboolean notFound = FALSE; |
| 623 | |
| 624 | memset ((void*)&data, 0,sizeof(lttv_total_block)); |
| 625 | |
| 626 | if(disk_array->len == NO_ITEMS){ |
| 627 | strcpy(data.diskname, diskname); |
| 628 | if(operation == LTTV_READ_OPERATION){ |
| 629 | data.total_bytes_read = size; |
| 630 | data.num_read_operations++; |
| 631 | } |
| 632 | else{ |
| 633 | data.total_bytes_written = size; |
| 634 | data.num_write_operations ++; |
| 635 | } |
| 636 | g_array_append_val (disk_array, data); |
| 637 | } |
| 638 | else{ |
| 639 | for(i = 0; i < disk_array->len; i++){ |
| 640 | element = &g_array_index(disk_array,lttv_total_block,i); |
| 641 | if(strcmp(element->diskname,diskname) == 0){ |
| 642 | if(operation == LTTV_READ_OPERATION){ |
| 643 | element->num_read_operations++; |
| 644 | element->total_bytes_read += size; |
| 645 | } |
| 646 | else{ |
| 647 | element->num_write_operations ++; |
| 648 | element->total_bytes_written += size; |
| 649 | } |
| 650 | notFound = TRUE; |
| 651 | } |
| 652 | } |
| 653 | if(!notFound){ |
| 654 | strcpy(data.diskname, diskname); |
| 655 | if(operation == LTTV_READ_OPERATION){ |
| 656 | data.total_bytes_read = size; |
| 657 | data.num_read_operations ++; |
| 658 | } |
| 659 | else{ |
| 660 | data.total_bytes_written = size; |
| 661 | data.num_write_operations ++; |
| 662 | } |
| 663 | g_array_append_val (disk_array, data); |
| 664 | } |
| 665 | } |
| 666 | } |
| 667 | |
| 668 | |
| 669 | static void destroy() |
| 670 | { |
| 671 | g_info("Destroy diskPerformance"); |
| 672 | g_slist_foreach(g_disk_data_list, disk_destroy_walk, NULL ); |
| 673 | g_slist_free(g_disk_data_list); |
| 674 | |
| 675 | lttvwindow_unregister_constructor(disk_performance); |
| 676 | |
| 677 | } |
| 678 | |
| 679 | |
| 680 | LTTV_MODULE("diskperformance", "disk info view", \ |
| 681 | "Produce disk I/O performance", \ |
| 682 | init, destroy, "lttvwindow") |
| 683 | |