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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> |
a4f37ccd |
25 | #include <stdio.h> |
26 | #include <stdlib.h> |
27 | #include <string.h> |
a4f37ccd |
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) |
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46 | #define TRACE_NUMBER 0 |
a4f37ccd |
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 | }; |
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59 | |
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60 | enum operation_t { |
61 | LTTV_READ_OPERATION = 1, |
62 | LTTV_WRITE_OPERATION |
63 | }; |
64 | |
65 | typedef struct _DiskPerformanceData { |
66 | |
67 | Tab * tab; |
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68 | |
a4f37ccd |
69 | LttvHooks * hooks_trace_after; |
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70 | |
a4f37ccd |
71 | LttvHooks * hooks_trace_before; |
4ea3dbbf |
72 | /* time window */ |
73 | TimeWindow time_window; |
a4f37ccd |
74 | |
75 | GtkWidget * scroll_win; |
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76 | |
a4f37ccd |
77 | /* Model containing list data */ |
78 | GtkListStore *store_m; |
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79 | |
a4f37ccd |
80 | GtkWidget *hbox_v; |
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81 | |
a4f37ccd |
82 | /* Widget to display the data in a columned list */ |
83 | GtkWidget *tree_v; |
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84 | |
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85 | /* Selection handler */ |
86 | GtkTreeSelection *select_c; |
87 | |
88 | GArray *disk_array; |
89 | |
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90 | LttvHooksById * event_by_id_hooks; |
91 | |
a4f37ccd |
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 | |
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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); |
a4f37ccd |
122 | static void disk_destroy_walk(gpointer data, gpointer user_data); |
a4f37ccd |
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); |
a4f37ccd |
126 | static void request_event( DiskPerformanceData *disk_performance); |
127 | void gui_disperformance_free(DiskPerformanceData *event_viewer_data); |
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128 | static void get_event_detail(LttEvent *e, lttv_block* disk_data); |
a4f37ccd |
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); |
4ea3dbbf |
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 | } |
a4f37ccd |
261 | |
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262 | /** |
263 | * Constructor hook |
264 | * |
265 | */ |
266 | GtkWidget *disk_performance(Tab * tab) |
267 | { |
a4f37ccd |
268 | |
269 | DiskPerformanceData* disk_data = disk_performance_data(tab); |
270 | if(disk_data) |
271 | return disk_data->hbox_v; |
272 | else |
273 | return NULL; |
a4f37ccd |
274 | } |
275 | |
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276 | /** |
277 | * This function initializes the Event Viewer functionnality through the |
278 | * GTK API. |
279 | */ |
280 | DiskPerformanceData *disk_performance_data(Tab *tab) |
281 | { |
a4f37ccd |
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), |
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302 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); |
303 | |
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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 */ |
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307 | G_TYPE_STRING, /* Diskname */ |
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308 | G_TYPE_INT64, /* Bytes read */ |
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309 | G_TYPE_INT64, /* Bytes read/sec */ |
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310 | G_TYPE_INT, |
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311 | G_TYPE_INT64, /* bytes written */ |
312 | G_TYPE_INT64, /* bytes written/sec */ |
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313 | G_TYPE_INT |
314 | ); |
315 | |
316 | disk_data->tree_v = gtk_tree_view_new_with_model (GTK_TREE_MODEL (disk_data->store_m)); |
4ea3dbbf |
317 | |
a4f37ccd |
318 | g_object_unref (G_OBJECT (disk_data->store_m)); |
319 | |
320 | renderer = gtk_cell_renderer_text_new (); |
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321 | |
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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); |
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386 | |
a4f37ccd |
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 | } |
a4f37ccd |
405 | |
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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; |
a4f37ccd |
418 | |
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419 | GArray *hooks; |
a4f37ccd |
420 | |
4ea3dbbf |
421 | guint ret; |
422 | |
423 | LttvTraceHook *hook; |
424 | |
425 | LttvTraceState *ts; |
a4f37ccd |
426 | |
4ea3dbbf |
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); |
a4f37ccd |
434 | |
4ea3dbbf |
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); |
a4f37ccd |
511 | } |
a4f37ccd |
512 | |
a4f37ccd |
513 | } |
514 | |
4ea3dbbf |
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; |
a4f37ccd |
544 | } |
545 | |
4ea3dbbf |
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; |
a4f37ccd |
572 | } |
a4f37ccd |
573 | |
4ea3dbbf |
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++) |
a4f37ccd |
588 | { |
4ea3dbbf |
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); |
a4f37ccd |
596 | } |
4ea3dbbf |
597 | |
a4f37ccd |
598 | } |
a4f37ccd |
599 | |
4ea3dbbf |
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 | { |
a4f37ccd |
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 | |
4ea3dbbf |
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 | { |
a4f37ccd |
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 | |
a4f37ccd |
668 | |
a4f37ccd |
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 | |