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