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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 | */ |
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18 | |
19 | /****************************************************************** |
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20 | |
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21 | - CPUID: processor ID |
22 | |
23 | - IrqId: IRQ ID |
24 | |
25 | - Frequency (Hz): the number of interruptions per second (Hz) |
26 | |
27 | - Total Duration (nsec): the sum of each interrupt duration in nsec |
28 | |
29 | - Duration Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
30 | N: number of interrupts |
31 | xi: duration of an interrupt (nsec) |
32 | Xa: average duration (nsec) |
33 | |
34 | - Max IRQ handler duration (nsec) [time interval]: the longest IRQ handler duration in nsec. |
35 | |
36 | -Average period (nsec): 1/Frequency(in HZ) |
37 | |
38 | -Period Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) where |
39 | N: number of interruptions |
40 | xi: duration of an interrupt |
41 | Xa: 1/Frequency (in Hz) |
42 | |
43 | -Frequency Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
44 | N: number of interruptions |
45 | xi: duration of an interrupt |
46 | Xa: Frequency (Hz) |
47 | |
48 | |
49 | |
50 | The standard deviation calculation is based on: |
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51 | http://en.wikipedia.org/wiki/Standard_deviation |
52 | |
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53 | Standard_deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
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54 | |
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55 | |
56 | |
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57 | To compute the standard deviation, we need to make two EventRequests to LTTV. In |
58 | the first EventRequest, we compute the average duration (Xa) and the Number of interruptions (N) of |
59 | each IrqID. We store the information calculated in the first EventRequest in an array |
60 | called FirstRequestIrqExit. In the second EventRequest, we compute the Sum ((xi -Xa)^2) |
61 | and store this information in a array called SumArray. The function CalculateDurationStandardDeviation() uses |
62 | FirstRequestIrqExit and SumArray arrays to calculate the duration standard deviation. |
63 | |
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64 | *******************************************************************/ |
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65 | |
66 | |
67 | |
68 | #include <math.h> |
69 | #include <glib.h> |
70 | #include <gtk/gtk.h> |
71 | #include <gdk/gdk.h> |
72 | #include <stdio.h> |
73 | #include <stdlib.h> |
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74 | #include <math.h> |
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75 | #include <string.h> |
76 | #include <ltt/ltt.h> |
77 | #include <ltt/event.h> |
78 | #include <ltt/type.h> |
79 | #include <ltt/trace.h> |
80 | #include <ltt/facility.h> |
81 | #include <lttv/module.h> |
82 | #include <lttv/hook.h> |
83 | #include <lttv/tracecontext.h> |
84 | #include <lttv/state.h> |
85 | #include <lttv/filter.h> |
86 | #include <lttvwindow/lttvwindow.h> |
87 | #include <ltt/time.h> |
88 | |
89 | #include "hInterruptsInsert.xpm" |
90 | |
91 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
92 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
93 | #define NO_ITEMS 0 |
94 | |
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95 | typedef struct |
96 | { |
97 | LttTime duration; |
98 | LttTime start_time; |
99 | LttTime end_time; |
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100 | }IrqDuration; |
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101 | |
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102 | typedef struct { |
103 | guint cpu_id; |
104 | guint id; |
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105 | guint NumerofInterruptions; |
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106 | LttTime total_duration; |
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107 | guint average_duration; |
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108 | IrqDuration max_irq_handler; |
109 | IrqDuration min_irq_handler; |
5f5119ee |
110 | }Irq; |
111 | |
112 | typedef struct { |
113 | guint id; |
114 | guint cpu_id; |
115 | LttTime event_time; |
116 | }irq_entry; |
117 | |
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118 | |
119 | typedef struct |
120 | { |
121 | guint irqId; |
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122 | guint NumerofInterruptions;//frequency;// |
123 | guint64 sumOfDurations; // to store the Sum ((xi -Xa)^2) of the duration Standard deviation |
124 | guint64 sumOfPeriods; // to store the Sum ((xi -Xa)^2) of the period Standard deviation |
125 | guint64 sumOfFrequencies;// to store the Sum ((xi -Xa)^2) of the frequency Standard deviation |
dc06b1bc |
126 | |
127 | }SumId; |
128 | |
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129 | enum type_t { |
130 | IRQ_ENTRY, |
131 | IRQ_EXIT |
132 | }; |
133 | |
134 | /** Array containing instanced objects. Used when module is unloaded */ |
135 | static GSList *interrupt_data_list = NULL ; |
136 | |
137 | |
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138 | #define TRACE_NUMBER 0 |
139 | |
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140 | typedef struct _InterruptEventData { |
141 | |
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142 | /*Graphical Widgets */ |
143 | GtkWidget * ScrollWindow; |
144 | GtkListStore *ListStore; |
145 | GtkWidget *Hbox; |
146 | GtkWidget *TreeView; |
147 | GtkTreeSelection *SelectionTree; |
148 | |
149 | Tab * tab; /* tab that contains this plug-in*/ |
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150 | LttvHooks * event_hooks; |
151 | LttvHooks * hooks_trace_after; |
152 | LttvHooks * hooks_trace_before; |
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153 | TimeWindow time_window; |
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154 | LttvHooksById * event_by_id_hooks; |
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155 | GArray *FirstRequestIrqExit; |
156 | GArray *FirstRequestIrqEntry; |
157 | GArray *SecondRequestIrqEntry; |
158 | GArray *SecondRequestIrqExit; |
159 | GArray *SumArray; |
160 | |
5f5119ee |
161 | } InterruptEventData ; |
162 | |
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163 | |
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164 | /* Function prototypes */ |
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165 | |
166 | static gboolean interrupt_update_time_window(void * hook_data, void * call_data); |
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167 | static GtkWidget *interrupts(Tab *tab); |
168 | static InterruptEventData *system_info(Tab *tab); |
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169 | void interrupt_destructor(InterruptEventData *event_viewer_data); |
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170 | static void FirstRequest(InterruptEventData *event_data ); |
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171 | static guint64 get_interrupt_id(LttEvent *e); |
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172 | static gboolean trace_header(void *hook_data, void *call_data); |
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173 | static gboolean DisplayViewer (void *hook_data, void *call_data); |
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174 | static void CalculateData(LttTime time_exit, guint cpu_id, InterruptEventData *event_data); |
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175 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit); |
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176 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data); |
177 | static gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data); |
178 | static gboolean SecondRequest(void *hook_data, void *call_data); |
179 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data); |
180 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data); |
181 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data); |
182 | static void CalculateXi(LttEvent *event, InterruptEventData *event_data); |
183 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data); |
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184 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data); |
185 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data); |
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186 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window); |
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187 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ); |
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188 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ); |
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189 | static void InterruptFree(InterruptEventData *event_viewer_data); |
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190 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data); |
191 | |
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192 | /* Enumeration of the columns */ |
193 | enum{ |
194 | CPUID_COLUMN, |
195 | IRQ_ID_COLUMN, |
196 | FREQUENCY_COLUMN, |
197 | DURATION_COLUMN, |
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198 | DURATION_STANDARD_DEV_COLUMN, |
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199 | MAX_IRQ_HANDLER_COLUMN, |
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200 | MIN_IRQ_HANDLER_COLUMN, |
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201 | AVERAGE_PERIOD, |
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202 | PERIOD_STANDARD_DEV_COLUMN, |
203 | FREQUENCY_STANDARD_DEV_COLUMN, |
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204 | N_COLUMNS |
205 | }; |
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206 | |
207 | |
208 | |
209 | /** |
210 | * init function |
211 | * |
212 | * |
213 | * This is the entry point of the viewer. |
214 | * |
215 | */ |
216 | static void init() { |
217 | g_info("interrupts: init()"); |
218 | lttvwindow_register_constructor("interrupts", |
219 | "/", |
220 | "Insert Interrupts View", |
221 | hInterruptsInsert_xpm, |
222 | "Insert Interrupts View", |
223 | interrupts); |
224 | |
225 | } |
226 | |
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227 | |
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228 | /** |
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229 | * Constructor hook |
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230 | * |
5f5119ee |
231 | */ |
f2ec7aa9 |
232 | static GtkWidget *interrupts(Tab * tab) |
233 | { |
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234 | |
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235 | InterruptEventData* event_data = system_info(tab) ; |
236 | if(event_data) |
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237 | return event_data->Hbox; |
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238 | else |
239 | return NULL; |
240 | } |
241 | |
f2ec7aa9 |
242 | /** |
243 | * This function initializes the Event Viewer functionnality through the |
244 | * GTK API. |
245 | */ |
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246 | InterruptEventData *system_info(Tab *tab) |
247 | { |
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248 | |
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249 | LttTime end; |
250 | GtkTreeViewColumn *column; |
251 | GtkCellRenderer *renderer; |
252 | InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ; |
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253 | |
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254 | event_viewer_data->tab = tab; |
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255 | |
256 | /*Get the current time frame from the main window */ |
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257 | event_viewer_data->time_window = lttvwindow_get_time_window(tab); |
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258 | |
259 | event_viewer_data->FirstRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
260 | event_viewer_data->FirstRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
261 | |
262 | event_viewer_data->SecondRequestIrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry)); |
263 | event_viewer_data->SecondRequestIrqExit = g_array_new(FALSE, FALSE, sizeof(Irq)); |
264 | |
265 | event_viewer_data->SumArray = g_array_new(FALSE, FALSE, sizeof(SumId)); |
266 | |
267 | |
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268 | /*Create tha main window for the viewer */ |
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269 | event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL); |
270 | gtk_widget_show (event_viewer_data->ScrollWindow); |
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271 | gtk_scrolled_window_set_policy( |
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272 | GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow), |
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273 | GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC/*GTK_POLICY_NEVER*/); |
274 | |
275 | /* Create a model for storing the data list */ |
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276 | event_viewer_data->ListStore = gtk_list_store_new ( |
5f5119ee |
277 | N_COLUMNS, /* Total number of columns */ |
278 | G_TYPE_INT, /* CPUID */ |
279 | G_TYPE_INT, /* IRQ_ID */ |
280 | G_TYPE_INT, /* Frequency */ |
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281 | G_TYPE_UINT64, /* Duration */ |
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282 | G_TYPE_INT, /* standard deviation */ |
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283 | G_TYPE_STRING, /* Max IRQ handler */ |
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284 | G_TYPE_STRING, /* Min IRQ handler */ |
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285 | G_TYPE_INT, /* Average period */ |
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286 | G_TYPE_INT, /* period standard deviation */ |
287 | G_TYPE_INT /* frequency standard deviation */ |
288 | |
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289 | ); |
290 | |
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291 | event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore)); |
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292 | |
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293 | g_object_unref (G_OBJECT (event_viewer_data->ListStore)); |
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294 | |
295 | renderer = gtk_cell_renderer_text_new (); |
ecafd9df |
296 | column = gtk_tree_view_column_new_with_attributes ("CPU ID", |
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297 | renderer, |
298 | "text", CPUID_COLUMN, |
299 | NULL); |
300 | gtk_tree_view_column_set_alignment (column, 0.0); |
301 | gtk_tree_view_column_set_fixed_width (column, 45); |
b3e7b125 |
302 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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303 | |
304 | |
305 | renderer = gtk_cell_renderer_text_new (); |
ecafd9df |
306 | column = gtk_tree_view_column_new_with_attributes ("IRQ ID", |
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307 | renderer, |
308 | "text", IRQ_ID_COLUMN, |
309 | NULL); |
310 | gtk_tree_view_column_set_alignment (column, 0.0); |
311 | gtk_tree_view_column_set_fixed_width (column, 220); |
b3e7b125 |
312 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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313 | |
314 | renderer = gtk_cell_renderer_text_new (); |
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315 | column = gtk_tree_view_column_new_with_attributes ("Frequency (Hz)", |
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316 | renderer, |
317 | "text", FREQUENCY_COLUMN, |
318 | NULL); |
319 | gtk_tree_view_column_set_alignment (column, 1.0); |
320 | gtk_tree_view_column_set_fixed_width (column, 220); |
b3e7b125 |
321 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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322 | |
323 | renderer = gtk_cell_renderer_text_new (); |
25c6412d |
324 | column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)", |
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325 | renderer, |
326 | "text", DURATION_COLUMN, |
327 | NULL); |
328 | gtk_tree_view_column_set_alignment (column, 0.0); |
329 | gtk_tree_view_column_set_fixed_width (column, 145); |
b3e7b125 |
330 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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331 | |
dc06b1bc |
332 | |
333 | renderer = gtk_cell_renderer_text_new (); |
334 | column = gtk_tree_view_column_new_with_attributes ("Duration standard deviation (nsec)", |
335 | renderer, |
336 | "text", DURATION_STANDARD_DEV_COLUMN, |
337 | NULL); |
338 | gtk_tree_view_column_set_alignment (column, 0.0); |
446b4179 |
339 | gtk_tree_view_column_set_fixed_width (column, 200); |
dc06b1bc |
340 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
341 | |
446b4179 |
342 | renderer = gtk_cell_renderer_text_new (); |
25c6412d |
343 | column = gtk_tree_view_column_new_with_attributes ("Max IRQ handler duration (nsec) [time interval]", |
446b4179 |
344 | renderer, |
345 | "text", MAX_IRQ_HANDLER_COLUMN, |
346 | NULL); |
347 | gtk_tree_view_column_set_alignment (column, 0.0); |
348 | gtk_tree_view_column_set_fixed_width (column, 250); |
349 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
05600f3b |
350 | |
351 | renderer = gtk_cell_renderer_text_new (); |
352 | column = gtk_tree_view_column_new_with_attributes ("Min IRQ handler duration (nsec) [time interval]", |
353 | renderer, |
354 | "text", MIN_IRQ_HANDLER_COLUMN, |
355 | NULL); |
356 | gtk_tree_view_column_set_alignment (column, 0.0); |
357 | gtk_tree_view_column_set_fixed_width (column, 250); |
358 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
359 | |
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360 | renderer = gtk_cell_renderer_text_new (); |
361 | column = gtk_tree_view_column_new_with_attributes (" Average period (nsec)", |
362 | renderer, |
363 | "text", AVERAGE_PERIOD, |
364 | NULL); |
365 | gtk_tree_view_column_set_alignment (column, 0.0); |
366 | gtk_tree_view_column_set_fixed_width (column, 200); |
367 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
368 | |
369 | renderer = gtk_cell_renderer_text_new (); |
370 | column = gtk_tree_view_column_new_with_attributes ("Period standard deviation (nsec)", |
371 | renderer, |
372 | "text", PERIOD_STANDARD_DEV_COLUMN, |
373 | NULL); |
374 | gtk_tree_view_column_set_alignment (column, 0.0); |
375 | gtk_tree_view_column_set_fixed_width (column, 200); |
376 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
377 | |
ecafd9df |
378 | renderer = gtk_cell_renderer_text_new (); |
379 | column = gtk_tree_view_column_new_with_attributes ("Frequency standard deviation (Hz)", |
380 | renderer, |
381 | "text", FREQUENCY_STANDARD_DEV_COLUMN, |
382 | NULL); |
383 | gtk_tree_view_column_set_alignment (column, 0.0); |
384 | gtk_tree_view_column_set_fixed_width (column, 200); |
385 | gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column); |
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386 | |
dc06b1bc |
387 | |
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388 | event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView)); |
389 | gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE); |
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390 | |
b3e7b125 |
391 | gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView); |
5f5119ee |
392 | |
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393 | event_viewer_data->Hbox = gtk_hbox_new(0, 0); |
394 | gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0); |
5f5119ee |
395 | |
b3e7b125 |
396 | gtk_widget_show(event_viewer_data->Hbox); |
397 | gtk_widget_show(event_viewer_data->TreeView); |
5f5119ee |
398 | |
b3e7b125 |
399 | interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data); |
f2ec7aa9 |
400 | /* Registration for time notification */ |
b3e7b125 |
401 | lttvwindow_register_time_window_notify(tab, |
402 | interrupt_update_time_window, |
403 | event_viewer_data); |
f2ec7aa9 |
404 | |
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405 | g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox), |
406 | "event_data", |
407 | event_viewer_data, |
408 | (GDestroyNotify) InterruptFree); |
f2ec7aa9 |
409 | |
dc06b1bc |
410 | FirstRequest(event_viewer_data ); |
5f5119ee |
411 | return event_viewer_data; |
412 | } |
b3e7b125 |
413 | |
fc77fe59 |
414 | |
f2ec7aa9 |
415 | /** |
416 | * |
417 | * For each trace in the traceset, this function: |
418 | * - registers a callback function to each hook |
419 | * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks |
420 | * - calls lttvwindow_events_request() to request data in a specific |
421 | * time interval to the main window |
422 | * |
423 | */ |
dc06b1bc |
424 | static void FirstRequest(InterruptEventData *event_data ) |
f2ec7aa9 |
425 | { |
426 | guint i, k, l, nb_trace; |
427 | |
428 | LttvTraceHook *hook; |
429 | |
430 | guint ret; |
431 | |
432 | LttvTraceState *ts; |
433 | |
434 | GArray *hooks; |
435 | |
436 | EventsRequest *events_request; |
437 | |
438 | LttvTraceHookByFacility *thf; |
439 | |
440 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
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441 | |
f2ec7aa9 |
442 | |
443 | /* Get the traceset */ |
444 | LttvTraceset *traceset = tsc->ts; |
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445 | |
f2ec7aa9 |
446 | nb_trace = lttv_traceset_number(traceset); |
447 | |
448 | /* There are many traces in a traceset. Iteration for each trace. */ |
449 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
450 | { |
451 | events_request = g_new(EventsRequest, 1); |
452 | |
453 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
454 | |
455 | hooks = g_array_set_size(hooks, 2); |
b3e7b125 |
456 | |
f2ec7aa9 |
457 | event_data->hooks_trace_before = lttv_hooks_new(); |
458 | |
459 | /* Registers a hook function */ |
460 | lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT); |
461 | |
462 | event_data->hooks_trace_after = lttv_hooks_new(); |
dc06b1bc |
463 | |
464 | /* Registers a hook function */ |
465 | lttv_hooks_add(event_data->hooks_trace_after, SecondRequest, event_data, LTTV_PRIO_DEFAULT); |
f2ec7aa9 |
466 | /* Get a trace state */ |
467 | ts = (LttvTraceState *)tsc->traces[i]; |
468 | /* Create event_by_Id hooks */ |
469 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
b3e7b125 |
470 | |
f2ec7aa9 |
471 | /*Register event_by_id_hooks with a callback function*/ |
472 | ret = lttv_trace_find_hook(ts->parent.t, |
473 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
474 | LTT_FIELD_IRQ_ID, 0, 0, |
dc06b1bc |
475 | FirstRequestIrqEntryCallback, |
f2ec7aa9 |
476 | events_request, |
477 | &g_array_index(hooks, LttvTraceHook, 0)); |
478 | |
479 | ret = lttv_trace_find_hook(ts->parent.t, |
480 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
481 | LTT_FIELD_IRQ_ID, 0, 0, |
dc06b1bc |
482 | FirstRequestIrqExitCallback, |
f2ec7aa9 |
483 | events_request, |
484 | &g_array_index(hooks, LttvTraceHook, 1)); |
485 | |
486 | g_assert(!ret); |
487 | /*iterate through the facility list*/ |
488 | for(k = 0 ; k < hooks->len; k++) |
489 | { |
490 | hook = &g_array_index(hooks, LttvTraceHook, k); |
491 | for(l=0; l<hook->fac_list->len; l++) |
492 | { |
493 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
494 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
495 | thf->h, |
496 | event_data, |
497 | LTTV_PRIO_DEFAULT); |
498 | |
499 | } |
500 | } |
501 | /* Initalize the EventsRequest structure */ |
502 | events_request->owner = event_data; |
503 | events_request->viewer_data = event_data; |
504 | events_request->servicing = FALSE; |
505 | events_request->start_time = event_data->time_window.start_time; |
506 | events_request->start_position = NULL; |
507 | events_request->stop_flag = FALSE; |
508 | events_request->end_time = event_data->time_window.end_time; |
509 | events_request->num_events = G_MAXUINT; |
510 | events_request->end_position = NULL; |
511 | events_request->trace = i; |
512 | |
513 | events_request->hooks = hooks; |
514 | |
515 | events_request->before_chunk_traceset = NULL; |
516 | events_request->before_chunk_trace = event_data->hooks_trace_before; |
517 | events_request->before_chunk_tracefile= NULL; |
518 | events_request->event = NULL; |
519 | events_request->event_by_id = event_data->event_by_id_hooks; |
520 | events_request->after_chunk_tracefile = NULL; |
231a6432 |
521 | events_request->after_chunk_trace = NULL; |
f2ec7aa9 |
522 | events_request->after_chunk_traceset = NULL; |
231a6432 |
523 | events_request->before_request = NULL; |
f2ec7aa9 |
524 | events_request->after_request = event_data->hooks_trace_after; |
525 | |
526 | lttvwindow_events_request(event_data->tab, events_request); |
527 | } |
528 | |
b3e7b125 |
529 | } |
5f5119ee |
530 | |
f2ec7aa9 |
531 | /** |
532 | * This function is called whenever an irq_entry event occurs. |
533 | * |
534 | */ |
dc06b1bc |
535 | static gboolean FirstRequestIrqEntryCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
536 | { |
537 | |
b3e7b125 |
538 | LttTime event_time; |
b3e7b125 |
539 | unsigned cpu_id; |
540 | irq_entry entry; |
b3e7b125 |
541 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
542 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
f2ec7aa9 |
543 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
544 | GArray* FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
f2ec7aa9 |
545 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
b3e7b125 |
546 | event_time = ltt_event_time(e); |
b3e7b125 |
547 | cpu_id = ltt_event_cpu_id(e); |
f2ec7aa9 |
548 | |
231a6432 |
549 | |
550 | entry.id =get_interrupt_id(e); |
551 | entry.cpu_id = cpu_id; |
552 | entry.event_time = event_time; |
dc06b1bc |
553 | g_array_append_val (FirstRequestIrqEntry, entry); |
231a6432 |
554 | |
f2ec7aa9 |
555 | return FALSE; |
5f5119ee |
556 | } |
557 | |
f2ec7aa9 |
558 | /** |
559 | * This function gets the id of the interrupt. The id is stored in a dynamic structure. |
ecafd9df |
560 | * Refer to the print.c file for how to extract data from a dynamic structure. |
f2ec7aa9 |
561 | */ |
562 | static guint64 get_interrupt_id(LttEvent *e) |
5f5119ee |
563 | { |
f2ec7aa9 |
564 | guint i, num_fields; |
565 | LttEventType *event_type; |
566 | LttField *element; |
567 | LttField *field; |
568 | guint64 irq_id; |
569 | event_type = ltt_event_eventtype(e); |
570 | num_fields = ltt_eventtype_num_fields(event_type); |
571 | for(i = 0 ; i < num_fields-1 ; i++) |
572 | { |
573 | field = ltt_eventtype_field(event_type, i); |
574 | irq_id = ltt_event_get_long_unsigned(e,field); |
5f5119ee |
575 | } |
576 | return irq_id; |
5f5119ee |
577 | |
f2ec7aa9 |
578 | } |
579 | /** |
580 | * This function is called whenever an irq_exit event occurs. |
581 | * |
582 | */ |
dc06b1bc |
583 | gboolean FirstRequestIrqExitCallback(void *hook_data, void *call_data) |
f2ec7aa9 |
584 | { |
585 | LttTime event_time; |
586 | unsigned cpu_id; |
5f5119ee |
587 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
588 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
589 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
590 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
591 | LttEventType *type = ltt_event_eventtype(e); |
592 | event_time = ltt_event_time(e); |
593 | cpu_id = ltt_event_cpu_id(e); |
231a6432 |
594 | |
e5258c09 |
595 | CalculateData( event_time, cpu_id, event_data); |
596 | |
231a6432 |
597 | return FALSE; |
5f5119ee |
598 | } |
599 | |
f2ec7aa9 |
600 | /** |
601 | * This function calculates the duration of an interrupt. |
602 | * |
603 | */ |
e5258c09 |
604 | static void CalculateData(LttTime time_exit, guint cpu_id,InterruptEventData *event_data) |
dc06b1bc |
605 | { |
5f5119ee |
606 | |
f2ec7aa9 |
607 | gint i, irq_id; |
608 | irq_entry *element; |
609 | LttTime duration; |
dc06b1bc |
610 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
611 | GArray *FirstRequestIrqEntry = event_data->FirstRequestIrqEntry; |
612 | for(i = 0; i < FirstRequestIrqEntry->len; i++) |
231a6432 |
613 | { |
dc06b1bc |
614 | element = &g_array_index(FirstRequestIrqEntry,irq_entry,i); |
231a6432 |
615 | if(element->cpu_id == cpu_id) |
616 | { |
ecafd9df |
617 | CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(element,time_exit, FirstRequestIrqExit); |
dc06b1bc |
618 | g_array_remove_index(FirstRequestIrqEntry, i); |
f2ec7aa9 |
619 | break; |
620 | } |
621 | } |
e5258c09 |
622 | } |
ecafd9df |
623 | |
dc06b1bc |
624 | |
f2ec7aa9 |
625 | /** |
ecafd9df |
626 | * This function calculates the total duration of an interrupt and the longest & shortest Irq handlers. |
f2ec7aa9 |
627 | * |
628 | */ |
ecafd9df |
629 | static void CalculateTotalDurationAndMaxIrqDurationAndMinIrqDuration(irq_entry *e, LttTime time_exit, GArray *FirstRequestIrqExit) |
630 | { |
5f5119ee |
631 | Irq irq; |
632 | Irq *element; |
633 | guint i; |
634 | LttTime duration; |
635 | gboolean notFound = FALSE; |
636 | memset ((void*)&irq, 0,sizeof(Irq)); |
637 | |
231a6432 |
638 | /*first time*/ |
dc06b1bc |
639 | if(FirstRequestIrqExit->len == NO_ITEMS) |
231a6432 |
640 | { |
5f5119ee |
641 | irq.cpu_id = e->cpu_id; |
642 | irq.id = e->id; |
ecafd9df |
643 | irq.NumerofInterruptions++; |
5f5119ee |
644 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
645 | |
446b4179 |
646 | irq.max_irq_handler.start_time = e->event_time; |
647 | irq.max_irq_handler.end_time = time_exit; |
648 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
649 | |
650 | irq.min_irq_handler.start_time = e->event_time; |
651 | irq.min_irq_handler.end_time = time_exit; |
652 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
e5258c09 |
653 | |
dc06b1bc |
654 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
655 | } |
231a6432 |
656 | else |
657 | { |
dc06b1bc |
658 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
659 | { |
dc06b1bc |
660 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
661 | if(element->id == e->id) |
662 | { |
5f5119ee |
663 | notFound = TRUE; |
664 | duration = ltt_time_sub(time_exit, e->event_time); |
665 | element->total_duration = ltt_time_add(element->total_duration, duration); |
ecafd9df |
666 | element->NumerofInterruptions++; |
667 | // Max irq handler |
446b4179 |
668 | if(ltt_time_compare(duration,element->max_irq_handler.duration) > 0) |
669 | { |
670 | element->max_irq_handler.duration = duration; |
671 | element->max_irq_handler.start_time = e->event_time; |
672 | element->max_irq_handler.end_time = time_exit; |
673 | } |
ecafd9df |
674 | // Min irq handler |
675 | if(ltt_time_compare(duration,element->min_irq_handler.duration) < 0) |
676 | { |
677 | element->min_irq_handler.duration = duration; |
678 | element->min_irq_handler.start_time = e->event_time; |
679 | element->min_irq_handler.end_time = time_exit; |
680 | } |
5f5119ee |
681 | } |
682 | } |
231a6432 |
683 | if(!notFound) |
684 | { |
5f5119ee |
685 | irq.cpu_id = e->cpu_id; |
686 | irq.id = e->id; |
ecafd9df |
687 | irq.NumerofInterruptions++; |
5f5119ee |
688 | irq.total_duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
689 | // Max irq handler |
446b4179 |
690 | irq.max_irq_handler.start_time = e->event_time; |
691 | irq.max_irq_handler.end_time = time_exit; |
692 | irq.max_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
ecafd9df |
693 | // Min irq handler |
694 | irq.min_irq_handler.start_time = e->event_time; |
695 | irq.min_irq_handler.end_time = time_exit; |
696 | irq.min_irq_handler.duration = ltt_time_sub(time_exit, e->event_time); |
446b4179 |
697 | |
dc06b1bc |
698 | g_array_append_val (FirstRequestIrqExit, irq); |
5f5119ee |
699 | } |
700 | } |
701 | } |
231a6432 |
702 | |
e5258c09 |
703 | /** |
704 | * This function passes the second EventsRequest to LTTV |
705 | * |
706 | */ |
dc06b1bc |
707 | static gboolean SecondRequest(void *hook_data, void *call_data) |
708 | { |
709 | |
710 | guint i, k, l, nb_trace; |
711 | |
712 | LttvTraceHook *hook; |
713 | |
714 | guint ret; |
715 | |
716 | LttvTraceState *ts; |
717 | |
718 | GArray *hooks; |
719 | |
720 | EventsRequest *events_request; |
721 | |
722 | LttvTraceHookByFacility *thf; |
723 | |
724 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
725 | |
726 | LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab); |
727 | |
728 | CalculateAverageDurationForEachIrqId(event_data); |
729 | |
730 | /* Get the traceset */ |
731 | LttvTraceset *traceset = tsc->ts; |
732 | |
733 | nb_trace = lttv_traceset_number(traceset); |
734 | |
735 | /* There are many traces in a traceset. Iteration for each trace. */ |
736 | for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) |
737 | { |
738 | events_request = g_new(EventsRequest, 1); |
739 | |
740 | hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook)); |
741 | |
742 | hooks = g_array_set_size(hooks, 2); |
743 | |
744 | event_data->hooks_trace_after = lttv_hooks_new(); |
745 | |
746 | /* Registers a hook function */ |
747 | lttv_hooks_add(event_data->hooks_trace_after, DisplayViewer, event_data, LTTV_PRIO_DEFAULT); |
748 | |
749 | /* Get a trace state */ |
750 | ts = (LttvTraceState *)tsc->traces[i]; |
751 | /* Create event_by_Id hooks */ |
752 | event_data->event_by_id_hooks = lttv_hooks_by_id_new(); |
753 | |
754 | /*Register event_by_id_hooks with a callback function*/ |
755 | ret = lttv_trace_find_hook(ts->parent.t, |
756 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY, |
757 | LTT_FIELD_IRQ_ID, 0, 0, |
758 | SecondRequestIrqEntryCallback, |
759 | events_request, |
760 | &g_array_index(hooks, LttvTraceHook, 0)); |
761 | |
762 | ret = lttv_trace_find_hook(ts->parent.t, |
763 | LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT, |
764 | LTT_FIELD_IRQ_ID, 0, 0, |
765 | SecondRequestIrqExitCallback, |
766 | events_request, |
767 | &g_array_index(hooks, LttvTraceHook, 1)); |
768 | |
769 | g_assert(!ret); |
e5258c09 |
770 | |
771 | /* iterate through the facility list */ |
dc06b1bc |
772 | for(k = 0 ; k < hooks->len; k++) |
773 | { |
774 | hook = &g_array_index(hooks, LttvTraceHook, k); |
775 | for(l=0; l<hook->fac_list->len; l++) |
776 | { |
777 | thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l); |
778 | lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id), |
779 | thf->h, |
780 | event_data, |
781 | LTTV_PRIO_DEFAULT); |
782 | |
783 | } |
784 | } |
785 | /* Initalize the EventsRequest structure */ |
786 | events_request->owner = event_data; |
787 | events_request->viewer_data = event_data; |
788 | events_request->servicing = FALSE; |
789 | events_request->start_time = event_data->time_window.start_time; |
790 | events_request->start_position = NULL; |
791 | events_request->stop_flag = FALSE; |
792 | events_request->end_time = event_data->time_window.end_time; |
793 | events_request->num_events = G_MAXUINT; |
794 | events_request->end_position = NULL; |
795 | events_request->trace = i; |
796 | |
797 | events_request->hooks = hooks; |
798 | |
799 | events_request->before_chunk_traceset = NULL; |
800 | events_request->before_chunk_trace = NULL; |
801 | events_request->before_chunk_tracefile= NULL; |
802 | events_request->event = NULL; |
803 | events_request->event_by_id = event_data->event_by_id_hooks; |
804 | events_request->after_chunk_tracefile = NULL; |
805 | events_request->after_chunk_trace = NULL; |
806 | events_request->after_chunk_traceset = NULL; |
807 | events_request->before_request = NULL; |
808 | events_request->after_request = event_data->hooks_trace_after; |
809 | |
810 | lttvwindow_events_request(event_data->tab, events_request); |
811 | } |
e5258c09 |
812 | return FALSE; |
dc06b1bc |
813 | } |
814 | |
ecafd9df |
815 | /** |
816 | * This function calculates the average duration for each Irq Id |
817 | * |
818 | */ |
dc06b1bc |
819 | static void CalculateAverageDurationForEachIrqId(InterruptEventData *event_data) |
820 | { |
821 | guint64 real_data; |
822 | Irq *element; |
823 | gint i; |
824 | GArray* FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
825 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
826 | { |
827 | element = &g_array_index(FirstRequestIrqExit,Irq,i); |
828 | real_data = element->total_duration.tv_sec; |
829 | real_data *= NANOSECONDS_PER_SECOND; |
830 | real_data += element->total_duration.tv_nsec; |
ecafd9df |
831 | if(element->NumerofInterruptions != 0) |
832 | element->average_duration = real_data / element->NumerofInterruptions; |
833 | else |
834 | element->average_duration = 0; |
dc06b1bc |
835 | } |
836 | |
837 | } |
838 | |
e5258c09 |
839 | /** |
840 | * This function is called whenever an irq_entry event occurs. Use in the second request |
841 | * |
842 | */ |
dc06b1bc |
843 | static gboolean SecondRequestIrqEntryCallback(void *hook_data, void *call_data) |
844 | { |
845 | |
846 | LttTime event_time; |
847 | unsigned cpu_id; |
848 | irq_entry entry; |
849 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
850 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
851 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
852 | GArray* SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
853 | LttEvent *e = ltt_tracefile_get_event(tfc->tf); |
854 | event_time = ltt_event_time(e); |
855 | cpu_id = ltt_event_cpu_id(e); |
856 | |
857 | |
858 | entry.id =get_interrupt_id(e); |
859 | entry.cpu_id = cpu_id; |
860 | entry.event_time = event_time; |
861 | g_array_append_val (SecondRequestIrqEntry, entry); |
862 | |
863 | return FALSE; |
864 | } |
865 | |
e5258c09 |
866 | /** |
867 | * This function is called whenever an irq_exit event occurs in the second request. |
868 | * |
869 | */ |
dc06b1bc |
870 | static gboolean SecondRequestIrqExitCallback(void *hook_data, void *call_data) |
871 | { |
872 | |
873 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
874 | LttvTracefileState *tfs = (LttvTracefileState *)call_data; |
875 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
876 | LttEvent *event = ltt_tracefile_get_event(tfc->tf); |
877 | |
878 | CalculateXi(event, event_data); |
879 | return FALSE; |
880 | } |
881 | |
e5258c09 |
882 | |
883 | /** |
884 | * This function is called whenever an irq_exit event occurs in the second request. |
885 | * |
886 | */ |
dc06b1bc |
887 | static void CalculateXi(LttEvent *event_irq_exit, InterruptEventData *event_data) |
888 | { |
889 | gint i, irq_id; |
890 | irq_entry *element; |
891 | LttTime Xi; |
892 | LttTime exit_time; |
893 | unsigned cpu_id; |
894 | |
895 | GArray *SecondRequestIrqExit = event_data->SecondRequestIrqExit; |
896 | GArray *SecondRequestIrqEntry = event_data->SecondRequestIrqEntry; |
897 | cpu_id = ltt_event_cpu_id(event_irq_exit); |
898 | for(i = 0; i < SecondRequestIrqEntry->len; i++) |
899 | { |
900 | element = &g_array_index(SecondRequestIrqEntry,irq_entry,i); |
901 | if(element->cpu_id == cpu_id) |
902 | { |
903 | |
904 | /* time calculation */ |
905 | exit_time = ltt_event_time(event_irq_exit); |
906 | Xi = ltt_time_sub(exit_time, element->event_time); |
907 | irq_id = element->id; |
908 | |
909 | SumItems(irq_id, Xi,event_data); |
910 | g_array_remove_index(SecondRequestIrqEntry, i); |
911 | break; |
912 | } |
913 | } |
914 | } |
915 | |
e5258c09 |
916 | |
917 | /** |
918 | * This function computes the Sum ((xi -Xa)^2) and store the result in SumArray |
919 | * |
920 | */ |
dc06b1bc |
921 | static void SumItems(gint irq_id, LttTime Xi, InterruptEventData *event_data) |
922 | { |
923 | gint i; |
6b0817c2 |
924 | guint Xi_in_ns; |
dc06b1bc |
925 | |
6b0817c2 |
926 | gint duration_inner_part; |
927 | guint64 period_inner_part; |
ecafd9df |
928 | guint64 frequency_inner_part; |
929 | |
dc06b1bc |
930 | Irq *average; |
931 | SumId *sumItem; |
932 | SumId sum; |
6b0817c2 |
933 | int FrequencyHZ = 0; |
dc06b1bc |
934 | gboolean notFound = FALSE; |
935 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
936 | GArray *SumArray = event_data->SumArray; |
6b0817c2 |
937 | Xi_in_ns = Xi.tv_sec; |
938 | Xi_in_ns *= NANOSECONDS_PER_SECOND; |
939 | Xi_in_ns += Xi.tv_nsec; |
dc06b1bc |
940 | |
941 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
942 | { |
943 | average = &g_array_index(FirstRequestIrqExit,Irq,i); |
944 | if(irq_id == average->id) |
945 | { |
6b0817c2 |
946 | duration_inner_part = Xi_in_ns - average->average_duration; |
ecafd9df |
947 | FrequencyHZ = FrequencyInHZ(average->NumerofInterruptions, event_data->time_window); |
dc06b1bc |
948 | sum.irqId = irq_id; |
ecafd9df |
949 | // compute (xi -Xa)^2 of the duration Standard deviation |
950 | sum.NumerofInterruptions = average->NumerofInterruptions; |
6b0817c2 |
951 | sum.sumOfDurations = pow (duration_inner_part , 2); |
ecafd9df |
952 | |
953 | // compute (xi -Xa)^2 of the period Standard deviation |
6b0817c2 |
954 | period_inner_part = CalculatePeriodInnerPart(Xi_in_ns, FrequencyHZ); |
ecafd9df |
955 | |
956 | // compute (xi -Xa)^2 of the frequency Standard deviation |
957 | frequency_inner_part = CalculateFrequencyInnerPart(Xi_in_ns, FrequencyHZ); |
958 | |
6b0817c2 |
959 | sum.sumOfPeriods = period_inner_part; |
ecafd9df |
960 | |
961 | sum.sumOfFrequencies = frequency_inner_part; |
962 | |
dc06b1bc |
963 | if(event_data->SumArray->len == NO_ITEMS) |
964 | { |
965 | g_array_append_val (SumArray, sum); |
966 | } |
967 | else |
6b0817c2 |
968 | { |
dc06b1bc |
969 | for(i = 0; i < SumArray->len; i++) |
970 | { |
971 | sumItem = &g_array_index(SumArray, SumId, i); |
972 | if(sumItem->irqId == irq_id) |
973 | { |
974 | notFound = TRUE; |
975 | sumItem->sumOfDurations += sum.sumOfDurations; |
6b0817c2 |
976 | sumItem->sumOfPeriods += sum.sumOfPeriods; |
ecafd9df |
977 | sumItem->sumOfFrequencies += sum.sumOfFrequencies; |
978 | } |
dc06b1bc |
979 | } |
980 | if(!notFound) |
981 | { |
982 | g_array_append_val (SumArray, sum); |
983 | } |
6b0817c2 |
984 | |
dc06b1bc |
985 | } |
986 | |
987 | } |
988 | } |
989 | } |
990 | |
ecafd9df |
991 | /** |
992 | * This function computes the inner part of the period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
993 | * The inner part is: (xi -Xa)^2 |
994 | */ |
6b0817c2 |
995 | static guint64 CalculatePeriodInnerPart(guint Xi, guint FrequencyHZ) |
996 | { |
997 | |
998 | double periodInSec; /*period in sec*/ |
999 | int periodInNSec; |
1000 | gint difference; |
1001 | guint64 result; |
1002 | periodInSec = (double)1/FrequencyHZ; |
1003 | periodInSec *= NANOSECONDS_PER_SECOND; |
1004 | periodInNSec = (int)periodInSec; |
1005 | |
1006 | difference = Xi - periodInNSec; |
1007 | result = pow (difference , 2); |
6b0817c2 |
1008 | return result; |
ecafd9df |
1009 | } |
6b0817c2 |
1010 | |
ecafd9df |
1011 | /** |
1012 | * This function computes the inner part of the frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1013 | * The inner part is: (xi -Xa)^2 |
1014 | */ |
1015 | static guint64 CalculateFrequencyInnerPart(guint Xi_in_ns, guint FrequencyHZ) |
1016 | { |
1017 | guint64 result; |
1018 | gint difference; |
1019 | |
1020 | difference = Xi_in_ns - FrequencyHZ; |
1021 | result = pow (difference , 2); |
1022 | return result; |
6b0817c2 |
1023 | } |
f2ec7aa9 |
1024 | /** |
1025 | * This function displays the result on the viewer |
1026 | * |
1027 | */ |
dc06b1bc |
1028 | static gboolean DisplayViewer(void *hook_data, void *call_data) |
1029 | { |
5f5119ee |
1030 | |
dc06b1bc |
1031 | guint average; |
f2ec7aa9 |
1032 | gint i; |
1033 | Irq element; |
1034 | LttTime average_duration; |
1035 | GtkTreeIter iter; |
1036 | guint64 real_data; |
446b4179 |
1037 | guint maxIRQduration; |
05600f3b |
1038 | guint minIRQduration; |
6b0817c2 |
1039 | double periodInSec; |
1040 | int periodInNsec; |
e5258c09 |
1041 | char maxIrqHandler[80]; |
05600f3b |
1042 | char minIrqHandler[80]; |
f2ec7aa9 |
1043 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
dc06b1bc |
1044 | GArray *FirstRequestIrqExit = event_data->FirstRequestIrqExit; |
52948a62 |
1045 | int FrequencyHZ = 0; |
6b0817c2 |
1046 | periodInSec = 0; |
f2ec7aa9 |
1047 | gtk_list_store_clear(event_data->ListStore); |
dc06b1bc |
1048 | for(i = 0; i < FirstRequestIrqExit->len; i++) |
231a6432 |
1049 | { |
dc06b1bc |
1050 | element = g_array_index(FirstRequestIrqExit,Irq,i); |
f2ec7aa9 |
1051 | real_data = element.total_duration.tv_sec; |
1052 | real_data *= NANOSECONDS_PER_SECOND; |
1053 | real_data += element.total_duration.tv_nsec; |
446b4179 |
1054 | |
1055 | |
1056 | maxIRQduration = element.max_irq_handler.duration.tv_sec; |
1057 | maxIRQduration *= NANOSECONDS_PER_SECOND; |
1058 | maxIRQduration += element.max_irq_handler.duration.tv_nsec; |
e5258c09 |
1059 | |
fc77fe59 |
1060 | sprintf(maxIrqHandler, "%d [%d.%d - %d.%d]",maxIRQduration, element.max_irq_handler.start_time.tv_sec, \ |
1061 | element.max_irq_handler.start_time.tv_nsec, element.max_irq_handler.end_time.tv_sec, \ |
1062 | element.max_irq_handler.end_time.tv_nsec) ; |
05600f3b |
1063 | |
1064 | minIRQduration = element.min_irq_handler.duration.tv_sec; |
1065 | minIRQduration *= NANOSECONDS_PER_SECOND; |
1066 | minIRQduration += element.min_irq_handler.duration.tv_nsec; |
1067 | sprintf(minIrqHandler, "%d [%d.%d - %d.%d]",minIRQduration, element.min_irq_handler.start_time.tv_sec, \ |
1068 | element.min_irq_handler.start_time.tv_nsec, element.min_irq_handler.end_time.tv_sec, \ |
1069 | element.min_irq_handler.end_time.tv_nsec) ; |
1070 | |
1071 | |
ecafd9df |
1072 | FrequencyHZ = FrequencyInHZ(element.NumerofInterruptions,event_data->time_window); |
6b0817c2 |
1073 | |
52948a62 |
1074 | if(FrequencyHZ != 0) |
1075 | { |
6b0817c2 |
1076 | periodInSec = (double)1/FrequencyHZ; |
1077 | periodInSec *= NANOSECONDS_PER_SECOND; |
1078 | periodInNsec = (int)periodInSec; |
ecafd9df |
1079 | |
52948a62 |
1080 | } |
6b0817c2 |
1081 | |
f2ec7aa9 |
1082 | gtk_list_store_append (event_data->ListStore, &iter); |
1083 | gtk_list_store_set (event_data->ListStore, &iter, |
1084 | CPUID_COLUMN, element.cpu_id, |
1085 | IRQ_ID_COLUMN, element.id, |
52948a62 |
1086 | FREQUENCY_COLUMN, FrequencyHZ, |
f2ec7aa9 |
1087 | DURATION_COLUMN, real_data, |
6b0817c2 |
1088 | DURATION_STANDARD_DEV_COLUMN, CalculateDurationStandardDeviation(element.id, event_data), |
e5258c09 |
1089 | MAX_IRQ_HANDLER_COLUMN, maxIrqHandler, |
05600f3b |
1090 | MIN_IRQ_HANDLER_COLUMN, minIrqHandler, |
6b0817c2 |
1091 | AVERAGE_PERIOD , periodInNsec, |
1092 | PERIOD_STANDARD_DEV_COLUMN, CalculatePeriodStandardDeviation(element.id, event_data), |
ecafd9df |
1093 | FREQUENCY_STANDARD_DEV_COLUMN, CalculateFrequencyStandardDeviation(element.id, event_data), |
f2ec7aa9 |
1094 | -1); |
dc06b1bc |
1095 | |
05600f3b |
1096 | |
f2ec7aa9 |
1097 | } |
dc06b1bc |
1098 | |
dc06b1bc |
1099 | |
1100 | if(event_data->FirstRequestIrqExit->len) |
231a6432 |
1101 | { |
dc06b1bc |
1102 | g_array_remove_range (event_data->FirstRequestIrqExit,0,event_data->FirstRequestIrqExit->len); |
231a6432 |
1103 | } |
1104 | |
dc06b1bc |
1105 | if(event_data->FirstRequestIrqEntry->len) |
231a6432 |
1106 | { |
dc06b1bc |
1107 | g_array_remove_range (event_data->FirstRequestIrqEntry,0,event_data->FirstRequestIrqEntry->len); |
1108 | } |
1109 | |
1110 | if(event_data->SecondRequestIrqEntry->len) |
1111 | { |
1112 | g_array_remove_range (event_data->SecondRequestIrqEntry,0,event_data->SecondRequestIrqEntry->len); |
1113 | } |
231a6432 |
1114 | |
dc06b1bc |
1115 | if(event_data->SecondRequestIrqExit->len) |
1116 | { |
1117 | g_array_remove_range (event_data->SecondRequestIrqExit,0, event_data->SecondRequestIrqExit->len); |
1118 | } |
1119 | |
1120 | if(event_data->SumArray->len) |
1121 | { |
1122 | g_array_remove_range (event_data->SumArray,0, event_data->SumArray->len); |
231a6432 |
1123 | } |
dc06b1bc |
1124 | |
f2ec7aa9 |
1125 | return FALSE; |
5f5119ee |
1126 | } |
dc06b1bc |
1127 | |
25c6412d |
1128 | |
6b0817c2 |
1129 | /** |
1130 | * This function converts the number of interrupts over a time window to |
1131 | * frequency in HZ |
1132 | */ |
ecafd9df |
1133 | static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window) |
25c6412d |
1134 | { |
1135 | guint64 frequencyHz = 0; |
6b0817c2 |
1136 | double timeSec; // time in second |
1137 | double result; |
1138 | result = ltt_time_to_double(time_window.time_width); |
1139 | timeSec = (result/NANOSECONDS_PER_SECOND); //time in second |
ecafd9df |
1140 | frequencyHz = NumerofInterruptions / timeSec; |
25c6412d |
1141 | return frequencyHz; |
1142 | } |
1143 | |
e5258c09 |
1144 | /** |
6b0817c2 |
1145 | * This function calculates the duration standard deviation |
ecafd9df |
1146 | * Duration standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1147 | * Where: |
1148 | * sumId.sumOfDurations -> Sum ((xi -Xa)^2) |
1149 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1150 | * deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
e5258c09 |
1151 | */ |
6b0817c2 |
1152 | static int CalculateDurationStandardDeviation(gint id, InterruptEventData *event_data) |
dc06b1bc |
1153 | { |
1154 | int i; |
1155 | SumId sumId; |
1156 | double inner_component; |
1157 | int deviation = 0; |
1158 | for(i = 0; i < event_data->SumArray->len; i++) |
1159 | { |
1160 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1161 | if(id == sumId.irqId) |
1162 | { |
ecafd9df |
1163 | if(sumId.NumerofInterruptions != 0) |
1164 | inner_component = sumId.sumOfDurations/ sumId.NumerofInterruptions; |
1165 | else |
1166 | inner_component = 0.0; |
dc06b1bc |
1167 | deviation = sqrt(inner_component); |
25c6412d |
1168 | return deviation; |
dc06b1bc |
1169 | } |
1170 | } |
1171 | return deviation; |
1172 | } |
6b0817c2 |
1173 | |
1174 | |
1175 | /** |
1176 | * This function calculates the period standard deviation |
ecafd9df |
1177 | * Period standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1178 | * Where: |
1179 | * sumId.sumOfPeriods -> Sum ((xi -Xa)^2) |
1180 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1181 | * period_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1182 | |
6b0817c2 |
1183 | * |
1184 | */ |
1185 | static int CalculatePeriodStandardDeviation(gint id, InterruptEventData *event_data) |
1186 | { |
1187 | int i; |
1188 | SumId sumId; |
1189 | guint64 inner_component; |
1190 | guint64 period_standard_deviation = 0; |
ecafd9df |
1191 | |
6b0817c2 |
1192 | for(i = 0; i < event_data->SumArray->len; i++) |
1193 | { |
1194 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1195 | if(id == sumId.irqId) |
1196 | { |
ecafd9df |
1197 | if(sumId.NumerofInterruptions != 0) |
1198 | inner_component = sumId.sumOfPeriods / sumId.NumerofInterruptions; |
1199 | else |
1200 | inner_component = 0; |
1201 | |
6b0817c2 |
1202 | period_standard_deviation = sqrt(inner_component); |
1203 | } |
1204 | } |
1205 | |
1206 | return period_standard_deviation; |
1207 | } |
ecafd9df |
1208 | |
1209 | /** |
1210 | * This function calculates the frequency standard deviation |
1211 | * Frequency standard deviation = sqrt(1/N Sum ((xi -Xa)^2)) |
1212 | * Where: |
1213 | * sumId.sumOfFrequencies -> Sum ((xi -Xa)^2) |
1214 | * inner_component -> 1/N Sum ((xi -Xa)^2) |
1215 | * frequency_standard_deviation-> sqrt(1/N Sum ((xi -Xa)^2)) |
1216 | * |
1217 | */ |
1218 | static int CalculateFrequencyStandardDeviation(gint id, InterruptEventData *event_data) |
1219 | { |
1220 | int i; |
1221 | SumId sumId; |
1222 | guint64 inner_component; |
1223 | guint64 frequency_standard_deviation = 0; |
1224 | for(i = 0; i < event_data->SumArray->len; i++) |
1225 | { |
1226 | sumId = g_array_index(event_data->SumArray, SumId, i); |
1227 | if(id == sumId.irqId) |
1228 | { |
1229 | if(sumId.NumerofInterruptions != 0) |
1230 | inner_component = sumId.sumOfFrequencies / sumId.NumerofInterruptions; |
1231 | else |
1232 | inner_component = 0; |
1233 | |
1234 | frequency_standard_deviation = sqrt(inner_component); |
1235 | } |
1236 | } |
1237 | return frequency_standard_deviation; |
1238 | } |
1239 | |
f2ec7aa9 |
1240 | /* |
1241 | * This function is called by the main window |
1242 | * when the time interval needs to be updated. |
1243 | **/ |
1244 | gboolean interrupt_update_time_window(void * hook_data, void * call_data) |
1245 | { |
5f5119ee |
1246 | InterruptEventData *event_data = (InterruptEventData *) hook_data; |
1247 | const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data); |
1248 | event_data->time_window = *time_window_nofify_data->new_time_window; |
1249 | g_info("interrupts: interrupt_update_time_window()\n"); |
1250 | Tab *tab = event_data->tab; |
1251 | lttvwindow_events_request_remove_all(tab, event_data); |
dc06b1bc |
1252 | FirstRequest(event_data ); |
f2ec7aa9 |
1253 | return FALSE; |
5f5119ee |
1254 | } |
1255 | |
f2ec7aa9 |
1256 | |
1257 | gboolean trace_header(void *hook_data, void *call_data) |
1258 | { |
1259 | |
1260 | InterruptEventData *event_data = (InterruptEventData *)hook_data; |
1261 | LttvTracefileContext *tfc = (LttvTracefileContext *)call_data; |
f2ec7aa9 |
1262 | LttEvent *e; |
1263 | LttTime event_time; |
1264 | return FALSE; |
5f5119ee |
1265 | } |
1266 | |
f2ec7aa9 |
1267 | void interrupt_destroy_walk(gpointer data, gpointer user_data) |
1268 | { |
5f5119ee |
1269 | g_info("interrupt_destroy_walk"); |
fc77fe59 |
1270 | InterruptEventData *event_data = (InterruptEventData*) data; |
5f5119ee |
1271 | interrupt_destructor((InterruptEventData*)data); |
5f5119ee |
1272 | } |
1273 | |
fc77fe59 |
1274 | |
f2ec7aa9 |
1275 | void interrupt_destructor(InterruptEventData *event_viewer_data) |
1276 | { |
1277 | /* May already been done by GTK window closing */ |
1278 | g_info("enter interrupt_destructor \n"); |
1279 | if(GTK_IS_WIDGET(event_viewer_data->Hbox)) |
1280 | { |
1281 | gtk_widget_destroy(event_viewer_data->Hbox); |
1282 | } |
1283 | } |
1284 | |
fc77fe59 |
1285 | /** |
1286 | This function is called when the viewer is destroyed to free hooks and memory |
1287 | */ |
1288 | static void InterruptFree(InterruptEventData *event_viewer_data) |
1289 | { |
1290 | Tab *tab = event_viewer_data->tab; |
1291 | if(tab != NULL) |
1292 | { |
1293 | |
1294 | g_array_free(event_viewer_data->FirstRequestIrqExit, TRUE); |
1295 | g_array_free(event_viewer_data->FirstRequestIrqEntry, TRUE); |
1296 | g_array_free(event_viewer_data->SecondRequestIrqEntry, TRUE); |
1297 | g_array_free(event_viewer_data->SecondRequestIrqExit, TRUE); |
1298 | g_array_free(event_viewer_data->SumArray, TRUE); |
1299 | |
1300 | lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data); |
1301 | |
1302 | lttvwindow_events_request_remove_all(event_viewer_data->tab, |
1303 | event_viewer_data); |
1304 | |
1305 | interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data); |
1306 | |
1307 | } |
1308 | |
1309 | } |
1310 | |
5f5119ee |
1311 | /** |
1312 | * plugin's destroy function |
1313 | * |
1314 | * This function releases the memory reserved by the module and unregisters |
1315 | * everything that has been registered in the gtkTraceSet API. |
1316 | */ |
dc06b1bc |
1317 | static void destroy() |
1318 | { |
1319 | |
5f5119ee |
1320 | g_info("Destroy interrupts"); |
1321 | g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL ); |
1322 | g_slist_free(interrupt_data_list); |
1323 | lttvwindow_unregister_constructor(interrupts); |
1324 | |
1325 | } |
1326 | |
1327 | LTTV_MODULE("interrupts", "interrupts info view", \ |
1328 | "Graphical module to display interrupts performance", \ |
1329 | init, destroy, "lttvwindow") |