+++ /dev/null
-/* This file is part of the Linux Trace Toolkit viewer
- * Copyright (C) 2005 Peter Ho
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License Version 2 as
- * published by the Free Software Foundation;
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-/******************************************************************
- Each field of the interrupt viewer is summarized as follows:
-
-- CPUID: processor ID
-
-- IrqId: IRQ ID
-
-- Frequency (Hz): the number of interrupts per second (Hz).
- We compute the total number of interrupts. Then
- we divide it by the time interval.
-
-- Total Duration (nsec): the sum of each interrupt duration in nsec.
- For a given Irq ID, we sum the duration of each interrupt
- to give us the total duration
-
-
-*******************************************************************/
-
-
-#include <math.h>
-#include <glib.h>
-#include <gtk/gtk.h>
-#include <gdk/gdk.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ltt/ltt.h>
-#include <ltt/event.h>
-#include <ltt/trace.h>
-#include <lttv/module.h>
-#include <lttv/hook.h>
-#include <lttv/tracecontext.h>
-#include <lttv/state.h>
-#include <lttv/filter.h>
-#include <lttvwindow/lttvwindow.h>
-#include <lttvwindow/lttv_plugin_tab.h>
-#include <ltt/time.h>
-
-#include "hTutorialInsert.xpm"
-
-#define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
-#define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
-#define NO_ITEMS 0
-
-typedef struct
-{
- guint cpu_id;
- guint id;
- guint TotalNumberOfInterrupts;
- LttTime total_duration;
-}Irq;
-
-typedef struct
-{
- guint id;
- guint cpu_id;
- LttTime event_time;
-}irq_entry;
-
-enum type_t
-{
- IRQ_ENTRY,
- IRQ_EXIT
-};
-
-/** Array containing instanced objects. Used when module is unloaded */
-static GSList *interrupt_data_list = NULL ;
-
-
-#define TRACE_NUMBER 0
-
-typedef struct _InterruptEventData
-{
-
- /* Graphical Widgets */
- GtkWidget * ScrollWindow;
- GtkListStore *ListStore;
- GtkWidget *Hbox;
- GtkWidget *TreeView;
- GtkTreeSelection *SelectionTree;
-
- Tab * tab; /* tab that contains this plug-in*/
- LttvPluginTab * ptab;
- LttvHooks * event_hooks;
- LttvHooks * hooks_trace_after;
- LttvHooks * hooks_trace_before;
- TimeWindow time_window;
- LttvHooksById * event_by_id_hooks;
- GArray *IrqExit;
- GArray *IrqEntry;
-} InterruptEventData ;
-
-
-/* Function prototypes */
-
-static gboolean interrupt_update_time_window(void * hook_data, void * call_data);
-static GtkWidget *interrupts(LttvPlugin *plugin);
-static InterruptEventData *system_info(LttvPluginTab *ptab);
-void interrupt_destructor(InterruptEventData *event_viewer_data);
-static void request_event(InterruptEventData *event_data );
-static guint64 get_interrupt_id(LttEvent *e);
-static gboolean trace_header(void *hook_data, void *call_data);
-static gboolean interrupt_display (void *hook_data, void *call_data);
-static void calcul_duration(LttTime time_exit, guint cpu_id, InterruptEventData *event_data);
-static void sum_interrupt_data(irq_entry *e, LttTime time_exit, GArray *interrupt_counters);
-static gboolean irq_entry_callback(void *hook_data, void *call_data);
-static gboolean irq_exit_callback(void *hook_data, void *call_data);
-static void InterruptFree(InterruptEventData *event_viewer_data);
-static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window);
-/* Enumeration of the columns */
-enum{
- CPUID_COLUMN,
- IRQ_ID_COLUMN,
- FREQUENCY_COLUMN,
- DURATION_COLUMN,
- N_COLUMNS
-};
-
-
-
-/**
- * init function
- *
- *
- * This is the entry point of the viewer.
- *
- */
-static void init()
-{
- g_info("interrupts: init()");
-
- lttvwindow_register_constructor("tutorial",
- "/",
- "Insert Interrupts View",
- hTutorialInsert_xpm,
- "Insert Interrupts View",
- interrupts);
-}
-
-
-/**
- * Constructor hook
- *
- */
-static GtkWidget *interrupts(LttvPlugin *plugin)
-{
- LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin);
- InterruptEventData* event_data = system_info(ptab) ;
- if(event_data)
- return event_data->Hbox;
- else
- return NULL;
-}
-
-/**
- * This function initializes the Event Viewer functionnality through the
- * GTK API.
- */
-InterruptEventData *system_info(LttvPluginTab *ptab)
-{
- LttTime end;
- GtkTreeViewColumn *column;
- GtkCellRenderer *renderer;
- InterruptEventData* event_viewer_data = g_new(InterruptEventData,1) ;
- Tab *tab = ptab->tab;
-
- event_viewer_data->tab = tab;
- event_viewer_data->ptab = ptab;
-
- /*Get the current time frame from the main window */
- event_viewer_data->time_window = lttvwindow_get_time_window(tab);
- event_viewer_data->IrqExit = g_array_new(FALSE, FALSE, sizeof(Irq));
- event_viewer_data->IrqEntry = g_array_new(FALSE, FALSE, sizeof(irq_entry));
-
- /*Create tha main window for the viewer */
- event_viewer_data->ScrollWindow = gtk_scrolled_window_new (NULL, NULL);
- gtk_widget_show (event_viewer_data->ScrollWindow);
- gtk_scrolled_window_set_policy(
- GTK_SCROLLED_WINDOW(event_viewer_data->ScrollWindow),
- GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
-
- /* Create a model for storing the data list */
- event_viewer_data->ListStore = gtk_list_store_new (
- N_COLUMNS, /* Total number of columns */
- G_TYPE_INT, /* CPUID */
- G_TYPE_INT, /* IRQ_ID */
- G_TYPE_INT, /* Frequency */
- G_TYPE_UINT64 /* Duration */
- );
-
- event_viewer_data->TreeView = gtk_tree_view_new_with_model (GTK_TREE_MODEL (event_viewer_data->ListStore));
-
- g_object_unref (G_OBJECT (event_viewer_data->ListStore));
-
- renderer = gtk_cell_renderer_text_new ();
- column = gtk_tree_view_column_new_with_attributes ("CPU ID",
- renderer,
- "text", CPUID_COLUMN,
- NULL);
- gtk_tree_view_column_set_alignment (column, 0.0);
- gtk_tree_view_column_set_fixed_width (column, 45);
- gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column);
-
-
- renderer = gtk_cell_renderer_text_new ();
- column = gtk_tree_view_column_new_with_attributes ("IRQ ID",
- renderer,
- "text", IRQ_ID_COLUMN,
- NULL);
- gtk_tree_view_column_set_alignment (column, 0.0);
- gtk_tree_view_column_set_fixed_width (column, 220);
- gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column);
-
- renderer = gtk_cell_renderer_text_new ();
- column = gtk_tree_view_column_new_with_attributes ("Frequency (HZ)",
- renderer,
- "text", FREQUENCY_COLUMN,
- NULL);
- gtk_tree_view_column_set_alignment (column, 1.0);
- gtk_tree_view_column_set_fixed_width (column, 220);
- gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column);
-
- renderer = gtk_cell_renderer_text_new ();
- column = gtk_tree_view_column_new_with_attributes ("Total Duration (nsec)",
- renderer,
- "text", DURATION_COLUMN,
- NULL);
- gtk_tree_view_column_set_alignment (column, 0.0);
- gtk_tree_view_column_set_fixed_width (column, 145);
- gtk_tree_view_append_column (GTK_TREE_VIEW (event_viewer_data->TreeView), column);
-
- event_viewer_data->SelectionTree = gtk_tree_view_get_selection (GTK_TREE_VIEW (event_viewer_data->TreeView));
- gtk_tree_selection_set_mode (event_viewer_data->SelectionTree, GTK_SELECTION_SINGLE);
-
- gtk_container_add (GTK_CONTAINER (event_viewer_data->ScrollWindow), event_viewer_data->TreeView);
-
- event_viewer_data->Hbox = gtk_hbox_new(0, 0);
- gtk_box_pack_start(GTK_BOX(event_viewer_data->Hbox), event_viewer_data->ScrollWindow, TRUE, TRUE, 0);
-
- gtk_widget_show(event_viewer_data->Hbox);
- gtk_widget_show(event_viewer_data->TreeView);
-
- interrupt_data_list = g_slist_append(interrupt_data_list, event_viewer_data);
-
- /* Registration for time notification */
- lttvwindow_register_time_window_notify(tab,
- interrupt_update_time_window,
- event_viewer_data);
-
- g_object_set_data_full(G_OBJECT(event_viewer_data->Hbox),
- "event_data",
- event_viewer_data,
- (GDestroyNotify) InterruptFree);
-
-
- request_event(event_viewer_data );
- return event_viewer_data;
-}
-
-/**
- *
- * For each trace in the traceset, this function:
- * - registers a callback function to each hook
- * - calls lttv_trace_find_hook() registers a hook function to event_by_id_hooks
- * - calls lttvwindow_events_request() to request data in a specific
- * time interval to the main window
- *
- */
-static void request_event(InterruptEventData *event_data )
-{
- guint i, k, l, nb_trace;
-
- LttvTraceHook *hook;
-
- guint ret;
-
- LttvTraceState *ts;
-
- GArray *hooks;
-
- EventsRequest *events_request;
-
- LttvTraceHookByFacility *thf;
-
- LttvTracesetContext *tsc = lttvwindow_get_traceset_context(event_data->tab);
-
-
- /* Get the traceset */
- LttvTraceset *traceset = tsc->ts;
-
- nb_trace = lttv_traceset_number(traceset);
-
- /* There are many traces in a traceset. Iteration for each trace. */
- for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++)
- {
- events_request = g_new(EventsRequest, 1);
-
- hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook));
-
- hooks = g_array_set_size(hooks, 2);
-
- event_data->hooks_trace_before = lttv_hooks_new();
-
- /* Registers a hook function */
- lttv_hooks_add(event_data->hooks_trace_before, trace_header, event_data, LTTV_PRIO_DEFAULT);
-
- event_data->hooks_trace_after = lttv_hooks_new();
- /* Registers a hook function */
- lttv_hooks_add(event_data->hooks_trace_after, interrupt_display, event_data, LTTV_PRIO_DEFAULT);
- /* Get a trace state */
- ts = (LttvTraceState *)tsc->traces[i];
- /* Create event_by_Id hooks */
- event_data->event_by_id_hooks = lttv_hooks_by_id_new();
-
- /*Register event_by_id_hooks with a callback function*/
- ret = lttv_trace_find_hook(ts->parent.t,
- LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY,
- LTT_FIELD_IRQ_ID, 0, 0,
- irq_entry_callback,
- events_request,
- &g_array_index(hooks, LttvTraceHook, 0));
-
- ret = lttv_trace_find_hook(ts->parent.t,
- LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT,
- LTT_FIELD_IRQ_ID, 0, 0,
- irq_exit_callback,
- events_request,
- &g_array_index(hooks, LttvTraceHook, 1));
-
- g_assert(!ret);
-
- /*iterate through the facility list*/
- for(k = 0 ; k < hooks->len; k++)
- {
- hook = &g_array_index(hooks, LttvTraceHook, k);
- for(l=0; l<hook->fac_list->len; l++)
- {
- thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l);
- lttv_hooks_add(lttv_hooks_by_id_find(event_data->event_by_id_hooks, thf->id),
- thf->h,
- event_data,
- LTTV_PRIO_DEFAULT);
-
- }
- }
-
- /* Initalize the EventsRequest structure */
- events_request->owner = event_data;
- events_request->viewer_data = event_data;
- events_request->servicing = FALSE;
- events_request->start_time = event_data->time_window.start_time;
- events_request->start_position = NULL;
- events_request->stop_flag = FALSE;
- events_request->end_time = event_data->time_window.end_time;
- events_request->num_events = G_MAXUINT;
- events_request->end_position = NULL;
- events_request->trace = i;
-
- events_request->hooks = hooks;
-
- events_request->before_chunk_traceset = NULL;
- events_request->before_chunk_trace = event_data->hooks_trace_before;
- events_request->before_chunk_tracefile= NULL;
- events_request->event = NULL;
- events_request->event_by_id = event_data->event_by_id_hooks;
- events_request->after_chunk_tracefile = NULL;
- events_request->after_chunk_trace = NULL;
- events_request->after_chunk_traceset = NULL;
- events_request->before_request = NULL;
- events_request->after_request = event_data->hooks_trace_after;
-
- lttvwindow_events_request(event_data->tab, events_request);
- }
-
-}
-
-/**
- * This function is called whenever an irq_entry event occurs.
- *
- */
-static gboolean irq_entry_callback(void *hook_data, void *call_data)
-{
-
- LttTime event_time;
- unsigned cpu_id;
- irq_entry entry;
- LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
- LttvTracefileState *tfs = (LttvTracefileState *)call_data;
- InterruptEventData *event_data = (InterruptEventData *)hook_data;
- GArray* IrqEntry = event_data->IrqEntry;
- LttEvent *e = ltt_tracefile_get_event(tfc->tf);
- event_time = ltt_event_time(e);
- cpu_id = ltt_event_cpu_id(e);
-
- if ((ltt_time_compare(event_time,event_data->time_window.start_time) == TRUE) &&
- (ltt_time_compare(event_data->time_window.end_time,event_time) == TRUE))
- {
- entry.id =get_interrupt_id(e);
- entry.cpu_id = cpu_id;
- entry.event_time = event_time;
- g_array_append_val (IrqEntry, entry);
- }
- return FALSE;
-}
-
-/**
- * This function gets the id of the interrupt. The id is stored in a dynamic structure.
- * Refer to the print.c file for howto extract data from a dynamic structure.
- */
-static guint64 get_interrupt_id(LttEvent *e)
-{
- guint i, num_fields;
- LttEventType *event_type;
- LttField *element;
- LttField *field;
- guint64 irq_id;
- event_type = ltt_event_eventtype(e);
- num_fields = ltt_eventtype_num_fields(event_type);
- for(i = 0 ; i < num_fields-1 ; i++)
- {
- field = ltt_eventtype_field(event_type, i);
- irq_id = ltt_event_get_long_unsigned(e,field);
- }
- return irq_id;
-
-}
-/**
- * This function is called whenever an irq_exit event occurs.
- *
- */
-gboolean irq_exit_callback(void *hook_data, void *call_data)
-{
- LttTime event_time;
- unsigned cpu_id;
- LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
- LttvTracefileState *tfs = (LttvTracefileState *)call_data;
- InterruptEventData *event_data = (InterruptEventData *)hook_data;
- LttEvent *e = ltt_tracefile_get_event(tfc->tf);
- LttEventType *type = ltt_event_eventtype(e);
- event_time = ltt_event_time(e);
- cpu_id = ltt_event_cpu_id(e);
- if ((ltt_time_compare(event_time,event_data->time_window.start_time) == TRUE) &&
- (ltt_time_compare(event_data->time_window.end_time,event_time) == TRUE))
- {
- calcul_duration( event_time, cpu_id, event_data);
-
- }
- return FALSE;
-}
-
-/**
- * This function calculates the duration of an interrupt.
- *
- */
-static void calcul_duration(LttTime time_exit, guint cpu_id,InterruptEventData *event_data){
-
- gint i, irq_id;
- irq_entry *element;
- LttTime duration;
- GArray *IrqExit = event_data->IrqExit;
- GArray *IrqEntry = event_data->IrqEntry;
- for(i = 0; i < IrqEntry->len; i++){
- element = &g_array_index(IrqEntry,irq_entry,i);
- if(element->cpu_id == cpu_id)
- {
- sum_interrupt_data(element,time_exit, IrqExit);
- g_array_remove_index(IrqEntry, i);
- break;
- }
- }
-}
-/**
- * This function calculates the total duration of an interrupt.
- *
- */
-static void sum_interrupt_data(irq_entry *e, LttTime time_exit, GArray *IrqExit)
-{
- Irq irq;
- Irq *element;
- guint i;
- LttTime duration;
- gboolean notFound = FALSE;
- memset ((void*)&irq, 0,sizeof(Irq));
-
-
- if(IrqExit->len == NO_ITEMS)
- {
- irq.cpu_id = e->cpu_id;
- irq.id = e->id;
- irq.TotalNumberOfInterrupts++;
- irq.total_duration = ltt_time_sub(time_exit, e->event_time);
- g_array_append_val (IrqExit, irq);
- }
- else{
- for(i = 0; i < IrqExit->len; i++)
- {
- element = &g_array_index(IrqExit, Irq, i);
- if(element->id == e->id){
- notFound = TRUE;
- duration = ltt_time_sub(time_exit, e->event_time);
- element->total_duration = ltt_time_add(element->total_duration, duration);
- element->TotalNumberOfInterrupts++;
- }
- }
-
- if(!notFound)
- {
- irq.cpu_id = e->cpu_id;
- irq.id = e->id;
- irq.TotalNumberOfInterrupts++;
- irq.total_duration = ltt_time_sub(time_exit, e->event_time);
- g_array_append_val (IrqExit, irq);
- }
- }
-}
-
-/**
- * This function displays the result on the viewer
- *
- */
-static gboolean interrupt_display(void *hook_data, void *call_data)
-{
-
- gint i;
- Irq element;
- LttTime average_duration;
- GtkTreeIter iter;
- guint64 real_data;
- int FrequencyHZ = 0;
-
- InterruptEventData *event_data = (InterruptEventData *)hook_data;
- GArray *IrqExit = event_data->IrqExit;
- gtk_list_store_clear(event_data->ListStore);
- for(i = 0; i < IrqExit->len; i++)
- {
-
- element = g_array_index(IrqExit,Irq,i);
- real_data = element.total_duration.tv_sec;
- real_data *= NANOSECONDS_PER_SECOND;
- real_data += element.total_duration.tv_nsec;
-
- FrequencyHZ = FrequencyInHZ(element.TotalNumberOfInterrupts,event_data->time_window);
-
- gtk_list_store_append (event_data->ListStore, &iter);
-
- gtk_list_store_set (event_data->ListStore, &iter,
- CPUID_COLUMN, element.cpu_id,
- IRQ_ID_COLUMN, element.id,
- FREQUENCY_COLUMN, FrequencyHZ,
- DURATION_COLUMN, real_data,
- -1);
-
- }
-
- if(event_data->IrqExit->len)
- g_array_remove_range (event_data->IrqExit,0,event_data->IrqExit->len);
-
- if(event_data->IrqEntry->len)
- g_array_remove_range (event_data->IrqEntry,0,event_data->IrqEntry->len);
- return FALSE;
-}
-
-/**
- * This function converts the number of interrupts over a time window to
- * frequency in HZ
- */
-static int FrequencyInHZ(gint NumerofInterruptions, TimeWindow time_window)
-{
- guint64 frequencyHz = 0;
- double timeSec; // time in second
- double result;
- result = ltt_time_to_double(time_window.time_width);
- timeSec = (result/NANOSECONDS_PER_SECOND); //time in second
- frequencyHz = NumerofInterruptions / timeSec;
- return frequencyHz;
-}
-
-
-/*
- * This function is called by the main window
- * when the time interval needs to be updated.
- **/
-gboolean interrupt_update_time_window(void * hook_data, void * call_data)
-{
- InterruptEventData *event_data = (InterruptEventData *) hook_data;
- const TimeWindowNotifyData *time_window_nofify_data = ((const TimeWindowNotifyData *)call_data);
- event_data->time_window = *time_window_nofify_data->new_time_window;
- g_info("interrupts: interrupt_update_time_window()\n");
- Tab *tab = event_data->tab;
- lttvwindow_events_request_remove_all(tab, event_data);
- request_event(event_data );
- return FALSE;
-}
-
-
-gboolean trace_header(void *hook_data, void *call_data)
-{
-
- InterruptEventData *event_data = (InterruptEventData *)hook_data;
- LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
- LttEvent *e;
- LttTime event_time;
- return FALSE;
-}
-
-void interrupt_destroy_walk(gpointer data, gpointer user_data)
-{
- g_info("interrupt_destroy_walk");
- interrupt_destructor((InterruptEventData*)data);
-
-}
-
-void interrupt_destructor(InterruptEventData *event_viewer_data)
-{
- /* May already been done by GTK window closing */
- g_info("enter interrupt_destructor \n");
- if(GTK_IS_WIDGET(event_viewer_data->Hbox))
- {
- gtk_widget_destroy(event_viewer_data->Hbox);
- }
-}
-
-/**
- This function is called when the viewer is destroyed to free hooks and memory
-*/
-static void InterruptFree(InterruptEventData *event_viewer_data)
-{
- Tab *tab = event_viewer_data->tab;
- if(tab != NULL)
- {
- g_array_free(event_viewer_data->IrqExit, TRUE);
-
- g_array_free(event_viewer_data->IrqEntry, TRUE);
-
- lttvwindow_unregister_time_window_notify(tab, interrupt_update_time_window, event_viewer_data);
-
- lttvwindow_events_request_remove_all(event_viewer_data->tab,
- event_viewer_data);
-
- interrupt_data_list = g_slist_remove(interrupt_data_list, event_viewer_data);
-
- }
-
-}
-
-/**
- * plugin's destroy function
- *
- * This function releases the memory reserved by the module and unregisters
- * everything that has been registered in the gtkTraceSet API.
- */
-static void destroy() {
- g_info("Destroy interrupts");
- g_slist_foreach(interrupt_data_list, interrupt_destroy_walk, NULL );
- g_slist_free(interrupt_data_list);
- lttvwindow_unregister_constructor(interrupts);
-
-}
-
-LTTV_MODULE("tutorial", "interrupts info view", \
- "Graphical module to display interrupts performance", \
- init, destroy, "lttvwindow")
projects / lttv.git / blobdiff