0a4ed526 |
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 | Each field of the interrupt viewer is summarized as follows: |
20 | |
21 | - CPUID: processor ID |
22 | |
23 | - IrqId: IRQ ID |
24 | |
25 | - Frequency (Hz): the number of interrupts per second (Hz). |
26 | We compute the total number of interrupts. Then |
27 | we divide it by the time interval. |
28 | |
29 | - Total Duration (nsec): the sum of each interrupt duration in nsec. |
30 | For a given Irq ID, we sum the duration of each interrupt |
31 | to give us the total duration |
32 | |
33 | |
34 | *******************************************************************/ |
35 | |
36 | |
37 | #include <math.h> |
38 | #include <glib.h> |
39 | #include <gtk/gtk.h> |
40 | #include <gdk/gdk.h> |
41 | #include <stdio.h> |
42 | #include <stdlib.h> |
43 | #include <string.h> |
44 | #include <ltt/ltt.h> |
45 | #include <ltt/event.h> |
46 | #include <ltt/type.h> |
47 | #include <ltt/trace.h> |
48 | #include <ltt/facility.h> |
49 | #include <lttv/module.h> |
50 | #include <lttv/hook.h> |
51 | #include <lttv/tracecontext.h> |
52 | #include <lttv/state.h> |
53 | #include <lttv/filter.h> |
54 | #include <lttvwindow/lttvwindow.h> |
55 | #include <ltt/time.h> |
56 | |
57 | #include "hTutorialInsert.xpm" |
58 | |
59 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
60 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
61 | #define NO_ITEMS 0 |
62 | |
63 | typedef struct |
64 | { |
65 | guint cpu_id; |
66 | guint id; |
67 | guint TotalNumberOfInterrupts; |
68 | LttTime total_duration; |
69 | }Irq; |
70 | |
71 | typedef struct |
72 | { |
73 | guint id; |
74 | guint cpu_id; |
75 | LttTime event_time; |
76 | }irq_entry; |
77 | |
78 | enum type_t |
79 | { |
80 | IRQ_ENTRY, |
81 | IRQ_EXIT |
82 | }; |
83 | |
84 | /** Array containing instanced objects. Used when module is unloaded */ |
85 | static GSList *interrupt_data_list = NULL ; |
86 | |
87 | |
88 | #define TRACE_NUMBER 0 |
89 | |
90 | typedef struct _InterruptEventData |
91 | { |
92 | |
93 | /* Graphical Widgets */ |
94 | GtkWidget * ScrollWindow; |
95 | GtkListStore *ListStore; |
96 | GtkWidget *Hbox; |
97 | GtkWidget *TreeView; |
98 | GtkTreeSelection *SelectionTree; |
99 | |
100 | Tab * tab; /* tab that contains this plug-in*/ |
101 | LttvHooks * event_hooks; |
102 | LttvHooks * hooks_trace_after; |
103 | LttvHooks * hooks_trace_before; |
104 | TimeWindow time_window; |
105 | LttvHooksById * event_by_id_hooks; |
106 | GArray *IrqExit; |
107 | GArray *IrqEntry; |
108 | } InterruptEventData ; |
109 | |
110 | |
111 | /* Function prototypes */ |
112 | |
113 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
114 | static GtkWidget *interrupts(Tab *tab); |
115 | static InterruptEventData *system_info(Tab *tab); |
116 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
117 | static void request_event(InterruptEventData *event_data ); |
118 | static guint64 get_interrupt_id(LttEvent *e); |
119 | static gboolean trace_header(void *hook_data, void *call_data); |
120 | static gboolean interrupt_display (void *hook_data, void *call_data); |
121 | static void calcul_duration(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
122 | static void sum_interrupt_data(irq_entry *e, LttTime time_exit, GArray *interrupt_counters); |
123 | static gboolean irq_entry_callback(void *hook_data, void *call_data); |
124 | static gboolean irq_exit_callback(void *hook_data, void *call_data); |
125 | static void InterruptFree(InterruptEventData *event_viewer_data); |
126 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window); |
127 | /* Enumeration of the columns */ |
128 | enum{ |
129 | CPUID_COLUMN, |
130 | IRQ_ID_COLUMN, |
131 | FREQUENCY_COLUMN, |
132 | DURATION_COLUMN, |
133 | N_COLUMNS |
134 | }; |
135 | |
136 | |
137 | |
138 | /** |
139 | * init function |
140 | * |
141 | * |
142 | * This is the entry point of the viewer. |
143 | * |
144 | */ |
145 | static void init() |
146 | { |
147 | g_info("interrupts: init()"); |
148 | |
149 | lttvwindow_register_constructor("tutorial", |
150 | "/", |
151 | "Insert Interrupts View", |
152 | hTutorialInsert_xpm, |
153 | "Insert Interrupts View", |
154 | interrupts); |
155 | } |
156 | |
157 | |
158 | /** |
159 | * Constructor hook |
160 | * |
161 | */ |
162 | static GtkWidget *interrupts(Tab * tab) |
163 | { |
164 | |
165 | InterruptEventData* event_data = system_info(tab) ; |
166 | if(event_data) |
167 | return event_data->Hbox; |
168 | else |
169 | return NULL; |
170 | } |
171 | |
172 | /** |
173 | * This function initializes the Event Viewer functionnality through the |
174 | * GTK API. |
175 | */ |
176 | InterruptEventData *system_info(Tab *tab) |
177 | { |
178 | LttTime end; |
179 | GtkTreeViewColumn *column; |
180 | GtkCellRenderer *renderer; |
181 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
182 | |
183 | |
184 | event_viewer_data->tab = tab; |
185 | |
186 | /*Get the current time frame from the main window */ |
187 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
188 | event_viewer_data->IrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
189 | event_viewer_data->IrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
190 | |
191 | /*Create tha main window for the viewer */ |
192 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
193 | gtk_widget_show (event_viewer_data->ScrollWindow); |
194 | gtk_scrolled_window_set_policy( |
195 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
196 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); |
197 | |
198 | /* Create a model for storing the data list */ |
199 | event_viewer_data->ListStore = gtk_list_store_new ( |
200 | N_COLUMNS, /* Total number of columns */ |
201 | G_TYPE_INT, /* CPUID */ |
202 | G_TYPE_INT, /* IRQ_ID */ |
203 | G_TYPE_INT, /* Frequency */ |
204 | G_TYPE_UINT64 /* Duration */ |
205 | ); |
206 | |
207 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
208 | |
209 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
210 | |
211 | renderer = gtk_cell_renderer_text_new (); |
212 | column = gtk_tree_view_column_new_with_attributes ("CPU ID", |
213 | renderer, |
214 | "text", CPUID_COLUMN, |
215 | NULL); |
216 | gtk_tree_view_column_set_alignment (column, 0.0); |
217 | gtk_tree_view_column_set_fixed_width (column, 45); |
218 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
219 | |
220 | |
221 | renderer = gtk_cell_renderer_text_new (); |
222 | column = gtk_tree_view_column_new_with_attributes ("IRQ ID", |
223 | renderer, |
224 | "text", IRQ_ID_COLUMN, |
225 | NULL); |
226 | gtk_tree_view_column_set_alignment (column, 0.0); |
227 | gtk_tree_view_column_set_fixed_width (column, 220); |
228 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
229 | |
230 | renderer = gtk_cell_renderer_text_new (); |
231 | column = gtk_tree_view_column_new_with_attributes ("Frequency (HZ)", |
232 | renderer, |
233 | "text", FREQUENCY_COLUMN, |
234 | NULL); |
235 | gtk_tree_view_column_set_alignment (column, 1.0); |
236 | gtk_tree_view_column_set_fixed_width (column, 220); |
237 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
238 | |
239 | renderer = gtk_cell_renderer_text_new (); |
240 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
241 | renderer, |
242 | "text", DURATION_COLUMN, |
243 | NULL); |
244 | gtk_tree_view_column_set_alignment (column, 0.0); |
245 | gtk_tree_view_column_set_fixed_width (column, 145); |
246 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
247 | |
248 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
249 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
250 | |
251 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
252 | |
253 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
254 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
255 | |
256 | gtk_widget_show(event_viewer_data->Hbox); |
257 | gtk_widget_show(event_viewer_data->TreeView); |
258 | |
259 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
260 | |
261 | /* Registration for time notification */ |
262 | lttvwindow_register_time_window_notify(tab, |
263 | interrupt_update_time_window, |
264 | event_viewer_data); |
265 | |
266 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
267 | "event_data", |
268 | event_viewer_data, |
269 | (GDestroyNotify) InterruptFree); |
270 | |
271 | |
272 | request_event(event_viewer_data ); |
273 | return event_viewer_data; |
274 | } |
275 | |
276 | /** |
277 | * |
278 | * For each trace in the traceset, this function: |
279 | * - registers a callback function to each hook |
280 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
281 | * - calls lttvwindow_events_request() to request data in a specific |
282 | * time interval to the main window |
283 | * |
284 | */ |
285 | static void request_event(InterruptEventData *event_data ) |
286 | { |
287 | guint i, k, l, nb_trace; |
288 | |
289 | LttvTraceHook *hook; |
290 | |
291 | guint ret; |
292 | |
293 | LttvTraceState *ts; |
294 | |
295 | GArray *hooks; |
296 | |
297 | EventsRequest *events_request; |
298 | |
299 | LttvTraceHookByFacility *thf; |
300 | |
301 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
302 | |
303 | |
304 | /* Get the traceset */ |
305 | LttvTraceset *traceset = tsc->ts; |
306 | |
307 | nb_trace = lttv_traceset_number(traceset); |
308 | |
309 | /* There are many traces in a traceset. Iteration for each trace. */ |
310 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
311 | { |
312 | events_request = g_new(EventsRequest, 1); |
313 | |
314 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
315 | |
316 | hooks = g_array_set_size(hooks, 2); |
317 | |
318 | event_data->hooks_trace_before = lttv_hooks_new(); |
319 | |
320 | /* Registers a hook function */ |
321 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
322 | |
323 | event_data->hooks_trace_after = lttv_hooks_new(); |
324 | /* Registers a hook function */ |
325 | lttv_hooks_add(event_data->hooks_trace_after, interrupt_display, event_data, LTTV_PRIO_DEFAULT); |
326 | /* Get a trace state */ |
327 | ts = (LttvTraceState *)tsc->traces[i]; |
328 | /* Create event_by_Id hooks */ |
329 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
330 | |
331 | /*Register event_by_id_hooks with a callback function*/ |
332 | ret = lttv_trace_find_hook(ts->parent.t, |
333 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
334 | LTT_FIELD_IRQ_ID, 0, 0, |
335 | irq_entry_callback, |
336 | events_request, |
337 | &g_array_index(hooks, LttvTraceHook, 0)); |
338 | |
339 | ret = lttv_trace_find_hook(ts->parent.t, |
340 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
341 | LTT_FIELD_IRQ_ID, 0, 0, |
342 | irq_exit_callback, |
343 | events_request, |
344 | &g_array_index(hooks, LttvTraceHook, 1)); |
345 | |
346 | g_assert(!ret); |
347 | |
348 | /*iterate through the facility list*/ |
349 | for(k = 0 ; k < hooks->len; k++) |
350 | { |
351 | hook = &g_array_index(hooks, LttvTraceHook, k); |
352 | for(l=0; l<hook->fac_list->len; l++) |
353 | { |
354 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
355 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
356 | thf->h, |
357 | event_data, |
358 | LTTV_PRIO_DEFAULT); |
359 | |
360 | } |
361 | } |
362 | |
363 | /* Initalize the EventsRequest structure */ |
364 | events_request->owner = event_data; |
365 | events_request->viewer_data = event_data; |
366 | events_request->servicing = FALSE; |
367 | events_request->start_time = event_data->time_window.start_time; |
368 | events_request->start_position = NULL; |
369 | events_request->stop_flag = FALSE; |
370 | events_request->end_time = event_data->time_window.end_time; |
371 | events_request->num_events = G_MAXUINT; |
372 | events_request->end_position = NULL; |
373 | events_request->trace = i; |
374 | |
375 | events_request->hooks = hooks; |
376 | |
377 | events_request->before_chunk_traceset = NULL; |
378 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
379 | events_request->before_chunk_tracefile= NULL; |
380 | events_request->event = NULL; |
381 | events_request->event_by_id = event_data->event_by_id_hooks; |
382 | events_request->after_chunk_tracefile = NULL; |
383 | events_request->after_chunk_trace = NULL; |
384 | events_request->after_chunk_traceset = NULL; |
385 | events_request->before_request = NULL; |
386 | events_request->after_request = event_data->hooks_trace_after; |
387 | |
388 | lttvwindow_events_request(event_data->tab, events_request); |
389 | } |
390 | |
391 | } |
392 | |
393 | /** |
394 | * This function is called whenever an irq_entry event occurs. |
395 | * |
396 | */ |
397 | static gboolean irq_entry_callback(void *hook_data, void *call_data) |
398 | { |
399 | |
400 | LttTime event_time; |
401 | unsigned cpu_id; |
402 | irq_entry entry; |
403 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
404 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
405 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
406 | GArray* IrqEntry = event_data->IrqEntry; |
407 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
408 | event_time = ltt_event_time(e); |
409 | cpu_id = ltt_event_cpu_id(e); |
410 | |
411 | if ((ltt_time_compare(event_time,event_data->time_window.start_time) == TRUE) && |
412 | (ltt_time_compare(event_data->time_window.end_time,event_time) == TRUE)) |
413 | { |
414 | entry.id =get_interrupt_id(e); |
415 | entry.cpu_id = cpu_id; |
416 | entry.event_time = event_time; |
417 | g_array_append_val (IrqEntry, entry); |
418 | } |
419 | return FALSE; |
420 | } |
421 | |
422 | /** |
423 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
424 | * Refer to the print.c file for howto extract data from a dynamic structure. |
425 | */ |
426 | static guint64 get_interrupt_id(LttEvent *e) |
427 | { |
428 | guint i, num_fields; |
429 | LttEventType *event_type; |
430 | LttField *element; |
431 | LttField *field; |
432 | guint64 irq_id; |
433 | event_type = ltt_event_eventtype(e); |
434 | num_fields = ltt_eventtype_num_fields(event_type); |
435 | for(i = 0 ; i < num_fields-1 ; i++) |
436 | { |
437 | field = ltt_eventtype_field(event_type, i); |
438 | irq_id = ltt_event_get_long_unsigned(e,field); |
439 | } |
440 | return irq_id; |
441 | |
442 | } |
443 | /** |
444 | * This function is called whenever an irq_exit event occurs. |
445 | * |
446 | */ |
447 | gboolean irq_exit_callback(void *hook_data, void *call_data) |
448 | { |
449 | LttTime event_time; |
450 | unsigned cpu_id; |
451 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
452 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
453 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
454 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
455 | LttEventType *type = ltt_event_eventtype(e); |
456 | event_time = ltt_event_time(e); |
457 | cpu_id = ltt_event_cpu_id(e); |
458 | if ((ltt_time_compare(event_time,event_data->time_window.start_time) == TRUE) && |
459 | (ltt_time_compare(event_data->time_window.end_time,event_time) == TRUE)) |
460 | { |
461 | calcul_duration( event_time, cpu_id, event_data); |
462 | |
463 | } |
464 | return FALSE; |
465 | } |
466 | |
467 | /** |
468 | * This function calculates the duration of an interrupt. |
469 | * |
470 | */ |
471 | static void calcul_duration(LttTime time_exit, guint cpu_id,InterruptEventData *event_data){ |
472 | |
473 | gint i, irq_id; |
474 | irq_entry *element; |
475 | LttTime duration; |
476 | GArray *IrqExit = event_data->IrqExit; |
477 | GArray *IrqEntry = event_data->IrqEntry; |
478 | for(i = 0; i < IrqEntry->len; i++){ |
479 | element = &g_array_index(IrqEntry,irq_entry,i); |
480 | if(element->cpu_id == cpu_id) |
481 | { |
482 | sum_interrupt_data(element,time_exit, IrqExit); |
483 | g_array_remove_index(IrqEntry, i); |
484 | break; |
485 | } |
486 | } |
487 | } |
488 | /** |
489 | * This function calculates the total duration of an interrupt. |
490 | * |
491 | */ |
492 | static void sum_interrupt_data(irq_entry *e, LttTime time_exit, GArray *IrqExit) |
493 | { |
494 | Irq irq; |
495 | Irq *element; |
496 | guint i; |
497 | LttTime duration; |
498 | gboolean notFound = FALSE; |
499 | memset ((void*)&irq, 0,sizeof(Irq)); |
500 | |
501 | |
502 | if(IrqExit->len == NO_ITEMS) |
503 | { |
504 | irq.cpu_id = e->cpu_id; |
505 | irq.id = e->id; |
506 | irq.TotalNumberOfInterrupts++; |
507 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
508 | g_array_append_val (IrqExit, irq); |
509 | } |
510 | else{ |
511 | for(i = 0; i < IrqExit->len; i++) |
512 | { |
513 | element = &g_array_index(IrqExit, Irq, i); |
514 | if(element->id == e->id){ |
515 | notFound = TRUE; |
516 | duration = ltt_time_sub(time_exit, e->event_time); |
517 | element->total_duration = ltt_time_add(element->total_duration, duration); |
518 | element->TotalNumberOfInterrupts++; |
519 | } |
520 | } |
521 | |
522 | if(!notFound) |
523 | { |
524 | irq.cpu_id = e->cpu_id; |
525 | irq.id = e->id; |
526 | irq.TotalNumberOfInterrupts++; |
527 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
528 | g_array_append_val (IrqExit, irq); |
529 | } |
530 | } |
531 | } |
532 | |
533 | /** |
534 | * This function displays the result on the viewer |
535 | * |
536 | */ |
537 | static gboolean interrupt_display(void *hook_data, void *call_data) |
538 | { |
539 | |
540 | gint i; |
541 | Irq element; |
542 | LttTime average_duration; |
543 | GtkTreeIter iter; |
544 | guint64 real_data; |
545 | int FrequencyHZ = 0; |
546 | |
547 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
548 | GArray *IrqExit = event_data->IrqExit; |
549 | gtk_list_store_clear(event_data->ListStore); |
550 | for(i = 0; i < IrqExit->len; i++) |
551 | { |
552 | |
553 | element = g_array_index(IrqExit,Irq,i); |
554 | real_data = element.total_duration.tv_sec; |
555 | real_data *= NANOSECONDS_PER_SECOND; |
556 | real_data += element.total_duration.tv_nsec; |
557 | |
558 | FrequencyHZ = FrequencyInHZ(element.TotalNumberOfInterrupts,event_data->time_window); |
559 | |
560 | gtk_list_store_append (event_data->ListStore, &iter); |
561 | |
562 | gtk_list_store_set (event_data->ListStore, &iter, |
563 | CPUID_COLUMN, element.cpu_id, |
564 | IRQ_ID_COLUMN, element.id, |
565 | FREQUENCY_COLUMN, FrequencyHZ, |
566 | DURATION_COLUMN, real_data, |
567 | -1); |
568 | |
569 | } |
570 | |
571 | if(event_data->IrqExit->len) |
572 | g_array_remove_range (event_data->IrqExit,0,event_data->IrqExit->len); |
573 | |
574 | if(event_data->IrqEntry->len) |
575 | g_array_remove_range (event_data->IrqEntry,0,event_data->IrqEntry->len); |
576 | return FALSE; |
577 | } |
578 | |
579 | /** |
580 | * This function converts the number of interrupts over a time window to |
581 | * frequency in HZ |
582 | */ |
583 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window) |
584 | { |
585 | guint64 frequencyHz = 0; |
586 | double timeSec; // time in second |
587 | double result; |
588 | result = ltt_time_to_double(time_window.time_width); |
589 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
590 | frequencyHz = NumerofInterruptions / timeSec; |
591 | return frequencyHz; |
592 | } |
593 | |
594 | |
595 | /* |
596 | * This function is called by the main window |
597 | * when the time interval needs to be updated. |
598 | **/ |
599 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
600 | { |
601 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
602 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
603 | event_data->time_window = *time_window_nofify_data->new_time_window; |
604 | g_info("interrupts: interrupt_update_time_window()\n"); |
605 | Tab *tab = event_data->tab; |
606 | lttvwindow_events_request_remove_all(tab, event_data); |
607 | request_event(event_data ); |
608 | return FALSE; |
609 | } |
610 | |
611 | |
612 | gboolean trace_header(void *hook_data, void *call_data) |
613 | { |
614 | |
615 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
616 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
617 | LttEvent *e; |
618 | LttTime event_time; |
619 | return FALSE; |
620 | } |
621 | |
622 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
623 | { |
624 | g_info("interrupt_destroy_walk"); |
625 | interrupt_destructor((InterruptEventData*)data); |
626 | |
627 | } |
628 | |
629 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
630 | { |
631 | /* May already been done by GTK window closing */ |
632 | g_info("enter interrupt_destructor \n"); |
633 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
634 | { |
635 | gtk_widget_destroy(event_viewer_data->Hbox); |
636 | } |
637 | } |
638 | |
639 | /** |
640 | This function is called when the viewer is destroyed to free hooks and memory |
641 | */ |
642 | static void InterruptFree(InterruptEventData *event_viewer_data) |
643 | { |
644 | Tab *tab = event_viewer_data->tab; |
645 | if(tab != NULL) |
646 | { |
647 | g_array_free(event_viewer_data->IrqExit, TRUE); |
648 | |
649 | g_array_free(event_viewer_data->IrqEntry, TRUE); |
650 | |
651 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
652 | |
653 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
654 | event_viewer_data); |
655 | |
656 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
657 | |
658 | } |
659 | |
660 | } |
661 | |
662 | /** |
663 | * plugin's destroy function |
664 | * |
665 | * This function releases the memory reserved by the module and unregisters |
666 | * everything that has been registered in the gtkTraceSet API. |
667 | */ |
668 | static void destroy() { |
669 | g_info("Destroy interrupts"); |
670 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
671 | g_slist_free(interrupt_data_list); |
672 | lttvwindow_unregister_constructor(interrupts); |
673 | |
674 | } |
675 | |
676 | LTTV_MODULE("tutorial", "interrupts info view", \ |
677 | "Graphical module to display interrupts performance", \ |
678 | init, destroy, "lttvwindow") |