accelerate double useage for time
[lttv.git] / ltt / branches / poly / lttv / modules / gui / detailedevents / events.c
index 1588c5f580e2ac154b8b67361dc948d1a74363d0..f96d14a996bc5c36462b182ef96ab69564d0afe3 100644 (file)
@@ -42,6 +42,7 @@
 #include <glib.h>
 #include <gtk/gtk.h>
 #include <gdk/gdk.h>
+#include <string.h>
 
 #include <ltt/ltt.h>
 #include <ltt/event.h>
@@ -78,6 +79,8 @@ typedef struct _EventFields{
 #define RESERVE_SMALL_SIZE_SQUARE    RESERVE_SMALL_SIZE*RESERVE_SMALL_SIZE
 #define RESERVE_SMALL_SIZE_CUBE      RESERVE_SMALL_SIZE*RESERVE_SMALL_SIZE_SQUARE
 
+static const LttTime ltt_time_backward = { 1 , 0 };
+
 typedef enum _ScrollDirection{
   SCROLL_STEP_UP,
   SCROLL_STEP_DOWN,
@@ -103,10 +106,9 @@ typedef struct _EventViewerData {
    */
   double       previous_value;
   
-  unsigned     start_event_index;       // the first event shown in the window
-  unsigned     end_event_index;         // the last event shown in the window
-  unsigned     size;                    // maxi number of events loaded when instance the viewer
-  gboolean     current_time_updated;
+  gint     start_event_index;       // the first event shown in the window
+  gint     end_event_index;         // the last event shown in the window
+  gint     size;                    // maxi number of events loaded
 
   //scroll window containing Tree View
   GtkWidget * scroll_win;
@@ -128,11 +130,11 @@ typedef struct _EventViewerData {
   /* Selection handler */
   GtkTreeSelection *select_c;
   
-  guint num_visible_events;
-  guint first_event, last_event;
+  gint num_visible_events;
+  gint first_event, last_event;
   
   gint number_of_events ;
-  guint currently_selected_event;
+  gint currently_selected_event;
   gboolean selected_event ;
 
 } EventViewerData ;
@@ -149,15 +151,13 @@ void remove_context_hooks(EventViewerData * event_viewer_data,
         LttvTracesetContext * tsc);
 
 //! Event Viewer's constructor hook
-GtkWidget *h_gui_events(Tab *tab, LttvTracesetSelector * s, char* key);
+GtkWidget *h_gui_events(Tab *tab);
 //! Event Viewer's constructor
-EventViewerData *gui_events(Tab *tab, LttvTracesetSelector *s, char *key);
+EventViewerData *gui_events(Tab *tab);
 //! Event Viewer's destructor
 void gui_events_destructor(EventViewerData *event_viewer_data);
 void gui_events_free(EventViewerData *event_viewer_data);
 
-static int event_selected_hook(void *hook_data, void *call_data);
-
 static gboolean
 header_size_allocate(GtkWidget *widget,
                         GtkAllocation *allocation,
@@ -173,7 +173,6 @@ static void tree_v_size_allocate_cb (GtkWidget *widget, GtkAllocation *alloc, gp
 static void tree_v_size_request_cb (GtkWidget *widget, GtkRequisition *requisition, gpointer data);
 static void tree_v_cursor_changed_cb (GtkWidget *widget, gpointer data);
 static void tree_v_move_cursor_cb (GtkWidget *widget, GtkMovementStep arg1, gint arg2, gpointer data);
-static void tree_v_grab_focus(GtkWidget *widget, gpointer data);
 
 
 static void get_data(double time, guint list_height, 
@@ -184,12 +183,8 @@ static void update_raw_data_array(EventViewerData* event_viewer_data, unsigned s
 static void get_events(EventViewerData* event_viewer_data, LttTime start, 
            LttTime end, unsigned max_num_events, unsigned * real_num_events);
 
-static int after_get_events(void *hook_data, void *call_data);
-
 static gboolean parse_event(void *hook_data, void *call_data);
 
-static LttvModule *main_win_module;
-
 /* Enumeration of the columns */
 enum
 {
@@ -212,10 +207,9 @@ enum
  * @return The widget created.
  */
 GtkWidget *
-h_gui_events(Tab * tab, LttvTracesetSelector * s, char* key)
+h_gui_events(Tab * tab)
 {
-  EventViewerData* event_viewer_data = gui_events(tab, s, key) ;
-
+  EventViewerData* event_viewer_data = gui_events(tab) ;
   if(event_viewer_data)
     return event_viewer_data->hbox_v;
   else return NULL;
@@ -229,13 +223,12 @@ h_gui_events(Tab * tab, LttvTracesetSelector * s, char* key)
  * @return The Event viewer data created.
  */
 EventViewerData *
-gui_events(Tab *tab, LttvTracesetSelector * s,char* key )
+gui_events(Tab *tab)
 {
   LttTime end;
   GtkTreeViewColumn *column;
   GtkCellRenderer *renderer;
   EventViewerData* event_viewer_data = g_new(EventViewerData,1) ;
-  EventFields * data;
 
   event_viewer_data->tab = tab;
   
@@ -291,10 +284,6 @@ gui_events(Tab *tab, LttvTracesetSelector * s,char* key )
         G_CALLBACK (tree_v_move_cursor_cb),
         event_viewer_data);
 
-  g_signal_connect (G_OBJECT (event_viewer_data->tree_v), "grab-focus",
-        G_CALLBACK (tree_v_grab_focus),
-        event_viewer_data);
-    
   // Use on each column!
   //gtk_tree_view_column_set_sizing(event_viewer_data->tree_v, GTK_TREE_VIEW_COLUMN_FIXED);
   
@@ -426,7 +415,7 @@ gui_events(Tab *tab, LttvTracesetSelector * s,char* key )
   end = ltt_time_sub(time_span.end_time, time_span.start_time);
 
   event_viewer_data->vadjust_c->upper =
-              ltt_time_to_double(end) * NANOSECONDS_PER_SECOND;
+              ltt_time_to_double(end);
 
   event_viewer_data->append = TRUE;
 
@@ -436,7 +425,7 @@ gui_events(Tab *tab, LttvTracesetSelector * s,char* key )
   /* Set the Selected Event */
   //  tree_v_set_cursor(event_viewer_data);
 
-  event_viewer_data->current_time_updated = FALSE;
// event_viewer_data->current_time_updated = FALSE;
   event_viewer_data->size  = RESERVE_SMALL_SIZE;
 
   g_object_set_data_full(
@@ -470,9 +459,6 @@ void tree_v_set_cursor(EventViewerData *event_viewer_data)
   
   if(event_viewer_data->selected_event && event_viewer_data->first_event != -1)
     {
-      //      gtk_adjustment_set_value(event_viewer_data->vadjust_c,
-     //            event_viewer_data->currently_selected_event);
-      
       path = gtk_tree_path_new_from_indices(
               event_viewer_data->currently_selected_event-
               event_viewer_data->first_event,
@@ -675,8 +661,8 @@ void tree_v_cursor_changed_cb (GtkWidget *widget, gpointer data)
  
     if(ltt_time.tv_sec != current_time.tv_sec ||
        ltt_time.tv_nsec != current_time.tv_nsec){
-      event_viewer_data->current_time_updated = TRUE;
-      lttvwindow_report_current_time(tab,&ltt_time);
+   //   event_viewer_data->current_time_updated = TRUE;
+      lttvwindow_report_current_time(tab,ltt_time);
     }
   }else{
     g_warning("Can not get iter\n");
@@ -712,16 +698,12 @@ void v_scroll_cb (GtkAdjustment *adjustment, gpointer data)
       //             NULL, FALSE);
       gtk_tree_path_free(tree_path);
     }
-  
 }
 
-gint get_cell_height(GtkTreeView *TreeView)
+static __inline gint get_cell_height(GtkTreeView *TreeView)
 {
-  gint height, width;
+  gint height;
   GtkTreeViewColumn *column = gtk_tree_view_get_column(TreeView, 0);
-  GList *Render_List = gtk_tree_view_column_get_cell_renderers(column);
-  GtkCellRenderer *renderer = g_list_first(Render_List)->data;
   
   gtk_tree_view_column_cell_get_size(column, NULL, NULL, NULL, NULL, &height);
   
@@ -748,8 +730,8 @@ void tree_v_size_allocate_cb (GtkWidget *widget, GtkAllocation *alloc, gpointer
     floor(exact_num_visible);
 */
  
-  g_debug("size allocate : last_num_visible_events : %lu,\
-           num_visible_events : %lu",
+  g_debug("size allocate : last_num_visible_events : %d,\
+           num_visible_events : %d",
            last_num_visible_events,
            event_viewer_data->num_visible_events);
   if(event_viewer_data->num_visible_events != last_num_visible_events)
@@ -831,7 +813,7 @@ void insert_data_into_model(EventViewerData *event_viewer_data, int start, int e
   }
 }
 
-static void get_data_wrapped(double time_value, guint list_height, 
+static void get_data_wrapped(double time_value, gint list_height, 
        EventViewerData *event_viewer_data, LttEvent *ev);
 
 static void get_data(double time_value, guint list_height,
@@ -845,67 +827,62 @@ static void get_data(double time_value, guint list_height,
   ltt_event_destroy(ev);
 }
 
-static void get_data_wrapped(double time_value, guint list_height, 
+static void get_data_wrapped(double time_value, gint list_height, 
        EventViewerData *event_viewer_data, LttEvent *ev)
 {
-  GtkTreeIter iter;
   int i;
   GtkTreeModel *model = GTK_TREE_MODEL(event_viewer_data->store_m);
-  GtkTreePath *tree_path;
   EventFields * event_fields;
   ScrollDirection  direction = SCROLL_NONE;
   GList * first;
-  int event_number;
+  gint event_number = event_viewer_data->start_event_index;
   double value = event_viewer_data->previous_value - time_value;
   LttTime start, end, time;
-  unsigned backward_num, minNum, maxNum;
+  gint backward_num, minNum, maxNum;
   LttTracefile * tf;
-  unsigned  block_num, event_num;
-  unsigned size = 1, count = 0;
+  unsigned  block_num;
+  gint size = 1, count = 0;
   gboolean need_backward_again, backward;
-  GdkWindow * win;
-  //GdkCursor * new;
-  GtkWidget* widget = gtk_widget_get_parent(event_viewer_data->hbox_v);
   LttvTracesetContext * tsc =
         lttvwindow_get_traceset_context(event_viewer_data->tab);
   TimeInterval time_span = tsc->time_span;
 
-  //if(widget){
-  //  new = gdk_cursor_new(GDK_X_CURSOR);
-  //  win = gtk_widget_get_parent_window(widget);  
-  //  gdk_window_set_cursor(win, new);
-  //  gdk_cursor_unref(new);  
-  //  gdk_window_stick(win);
-  //  gdk_window_unstick(win);
-  //}
-
-
   //  if(event_number > event_viewer_data->last_event ||
   //     event_number + list_height-1 < event_viewer_data->first_event ||
   //     event_viewer_data->first_event == -1)
   {
     /* no event can be reused, clear and start from nothing */
-    if(value == -1.0)      direction = SCROLL_STEP_DOWN;
-    else if(value == 1.0 ) direction = SCROLL_STEP_UP;
-    else if(value == -2.0) direction = SCROLL_PAGE_DOWN;
-    else if(value == 2.0 ) direction = SCROLL_PAGE_UP;
-    else if(value == 0.0 ) direction = SCROLL_NONE;
-    else direction = SCROLL_JUMP;
+    if(value < 0.0) {
+      if(value >= -1.0)      direction = SCROLL_STEP_DOWN;
+      else if(value >= -2.0) direction = SCROLL_PAGE_DOWN;
+      else direction = SCROLL_JUMP;
+    } else if(value > 0.0) {
+      if(value <= 1.0) direction = SCROLL_STEP_UP;
+      else if(value <= 2.0) direction = SCROLL_PAGE_UP;
+      else direction = SCROLL_JUMP;
+    } 
+    else direction = SCROLL_NONE; /* 0.0 */
 
     if(g_queue_get_length(event_viewer_data->event_fields_queue)==0)
       direction = SCROLL_JUMP;
 
     switch(direction){
       case SCROLL_STEP_UP:
-        g_debug("direction STEP_UP");
+        if(direction == SCROLL_STEP_UP) g_debug("direction STEP_UP");
       case SCROLL_PAGE_UP:
-        g_debug("direction PAGE_UP");
+        if(direction == SCROLL_PAGE_UP) g_debug("direction PAGE_UP");
   if(direction == SCROLL_PAGE_UP){
     backward = list_height>event_viewer_data->start_event_index ? TRUE : FALSE;
   }else{
     backward = event_viewer_data->start_event_index == 0 ? TRUE : FALSE;
   }
   if(backward){
+    first = event_viewer_data->event_fields_queue->head;
+    if(!first)break;
+    event_fields = (EventFields*)first->data;
+    LttTime backward_start = event_fields->time;
+
+    maxNum = RESERVE_SMALL_SIZE_CUBE;
     event_viewer_data->append = FALSE;
     do{
       if(direction == SCROLL_PAGE_UP){
@@ -913,58 +890,21 @@ static void get_data_wrapped(double time_value, guint list_height,
       }else{
         minNum = 1;
       }
-
       first = event_viewer_data->event_fields_queue->head;
       if(!first)break;
       event_fields = (EventFields*)first->data;
       end = event_fields->time;
-      if(end.tv_nsec != 0)
-        end.tv_nsec--;
-      else {
-        g_assert(end.tv_sec != 0);
-        end.tv_sec--;
-        end.tv_nsec = NANOSECONDS_PER_SECOND-1;
-      }
-      ltt_event_position_get(event_fields->ep, &block_num, &event_num, &tf);
-      if(size !=0){
-        if(event_num > minNum){
-    backward_num = event_num > RESERVE_SMALL_SIZE 
-                  ? event_num - RESERVE_SMALL_SIZE : 1;
-    ltt_event_position_set(event_fields->ep, block_num, backward_num);
-    ltt_tracefile_seek_position(tf, event_fields->ep);
-    g_assert(ltt_tracefile_read(tf,ev) != NULL);
-    start = ltt_event_time(ev);
-    maxNum = RESERVE_SMALL_SIZE_CUBE;
-        }else{
-    if(block_num > 1){
-      ltt_event_position_set(event_fields->ep, block_num-1, 1);
-      ltt_tracefile_seek_position(tf, event_fields->ep);
-      g_assert(ltt_tracefile_read(tf,ev) != NULL);
-      start = ltt_event_time(ev);             
-    }else{
-      start.tv_sec  = 0;
-      start.tv_nsec = 0;    
-    }
-    maxNum = RESERVE_SMALL_SIZE_CUBE;
-        }
-      }else{
-        if(block_num > count){
-    ltt_event_position_set(event_fields->ep, block_num-count, 1);
-    ltt_tracefile_seek_position(tf, event_fields->ep);
-    g_assert(ltt_tracefile_read(tf, ev) != NULL);
-    start = ltt_event_time(ev);             
-        }else{
-    start.tv_sec  = 0;
-    start.tv_nsec = 0;    
-        }       
-        maxNum = RESERVE_SMALL_SIZE_CUBE;
-      }
+
+      backward_start = LTT_TIME_MAX(ltt_time_sub(backward_start,
+                                                   ltt_time_backward),
+                              tsc->time_span.start_time);
 
       event_viewer_data->current_event_index = event_viewer_data->start_event_index;
-      get_events(event_viewer_data, start, end, maxNum, &size);
+      get_events(event_viewer_data, backward_start, end, maxNum, &size);
       event_viewer_data->start_event_index = event_viewer_data->current_event_index;
 
-      if(size < minNum && (start.tv_sec !=0 || start.tv_nsec !=0))
+      if(size < minNum 
+          && (ltt_time_compare(backward_start, tsc->time_span.start_time)>0))
         need_backward_again = TRUE;
       else need_backward_again = FALSE;
       if(size == 0){
@@ -1033,7 +973,7 @@ static void get_data_wrapped(double time_value, guint list_height,
   remove_all_items_from_queue(event_viewer_data->event_fields_queue);
   end.tv_sec = G_MAXULONG;
   end.tv_nsec = G_MAXULONG;
-  time = ltt_time_from_double(time_value / NANOSECONDS_PER_SECOND);
+  time = ltt_time_from_double(time_value);
   start = ltt_time_add(time_span.start_time, time);
   event_viewer_data->previous_value = time_value;
   get_events(event_viewer_data, start, end, RESERVE_SMALL_SIZE,&size);
@@ -1051,6 +991,7 @@ static void get_data_wrapped(double time_value, guint list_height,
       end.tv_nsec = NANOSECONDS_PER_SECOND-1;
     }
       
+    gint event_num;
     ltt_event_position_get(event_fields->ep, &block_num, &event_num, &tf);
     
     if(event_num > list_height - size){
@@ -1093,9 +1034,9 @@ static void get_data_wrapped(double time_value, guint list_height,
   event_fields = (EventFields*)g_list_nth_data(first,event_number);
   if(!event_fields) event_fields = (EventFields*)g_list_nth_data(first,0);       
   time = ltt_time_sub(event_fields->time, time_span.start_time);
-  event_viewer_data->vadjust_c->value = ltt_time_to_double(time) * NANOSECONDS_PER_SECOND;
+  event_viewer_data->vadjust_c->value = ltt_time_to_double(time);
   //gtk_adjustment_set_value(event_viewer_data->vadjust_c, 
-  //                         ltt_time_to_double(time) * NANOSECONDS_PER_SECOND);
+  //                         ltt_time_to_double(time));
   //g_signal_stop_emission_by_name(G_OBJECT(event_viewer_data->vadjust_c), "value-changed");
   event_viewer_data->previous_value = event_viewer_data->vadjust_c->value;
   //gtk_adjustment_value_changed(event_viewer_data->vadjust_c);
@@ -1120,71 +1061,12 @@ static void get_data_wrapped(double time_value, guint list_height,
 
     insert_data_into_model(event_viewer_data,event_number, event_number+list_height);
   }
-#ifdef DEBUG //do not use this, it's slower and broken
-  //  } else {
-  /* Some events will be reused */
-  if(event_number < event_viewer_data->first_event)
-    {
-      /* scrolling up, prepend events */
-      tree_path = gtk_tree_path_new_from_indices
-  (event_number+list_height-1 -
-   event_viewer_data->first_event + 1,
-   -1);
-      for(i=0; i<event_viewer_data->last_event-(event_number+list_height-1);
-    i++)
-  {
-    /* Remove the last events from the list */
-    if(gtk_tree_model_get_iter(model, &iter, tree_path))
-      gtk_list_store_remove(event_viewer_data->store_m, &iter);
-  }
-      
-      for(i=event_viewer_data->first_event-1; i>=event_number; i--)
-  {
-    if(i>=event_viewer_data->number_of_events) break;
-    /* Prepend new events */
-    gtk_list_store_prepend (event_viewer_data->store_m, &iter);
-    gtk_list_store_set (event_viewer_data->store_m, &iter,
-            CPUID_COLUMN, 0,
-            EVENT_COLUMN, "event irq",
-            TIME_COLUMN, i,
-            PID_COLUMN, 100,
-            ENTRY_LEN_COLUMN, 17,
-            EVENT_DESCR_COLUMN, "Detailed information",
-            -1);
-  }
-    } else {
-      /* Scrolling down, append events */
-      for(i=event_viewer_data->first_event; i<event_number; i++)
-  {
-    /* Remove these events from the list */
-    gtk_tree_model_get_iter_first(model, &iter);
-    gtk_list_store_remove(event_viewer_data->store_m, &iter);
-  }
-      for(i=event_viewer_data->last_event+1; i<event_number+list_height; i++)
-  {
-    if(i>=event_viewer_data->number_of_events) break;
-    /* Append new events */
-    gtk_list_store_append (event_viewer_data->store_m, &iter);
-    gtk_list_store_set (event_viewer_data->store_m, &iter,
-            CPUID_COLUMN, 0,
-            EVENT_COLUMN, "event irq",
-            TIME_COLUMN, i,
-            PID_COLUMN, 100,
-            ENTRY_LEN_COLUMN, 17,
-            EVENT_DESCR_COLUMN, "Detailed information",
-            -1);
-  }
-      
-    }
-  //}
-#endif //DEBUG
+
   event_viewer_data->first_event = event_viewer_data->start_event_index ;
   event_viewer_data->last_event = event_viewer_data->end_event_index ;
 
  LAST:
   return;
- // if(widget)
- //    gdk_window_set_cursor(win, NULL);  
 
 }
 
@@ -1237,26 +1119,13 @@ gui_events_free(EventViewerData *event_viewer_data)
 void
 gui_events_destructor(EventViewerData *event_viewer_data)
 {
-  guint index;
 
   /* May already been done by GTK window closing */
   if(GTK_IS_WIDGET(event_viewer_data->hbox_v)){
-    gui_events_free(event_viewer_data);
     gtk_widget_destroy(event_viewer_data->hbox_v);
-    event_viewer_data = NULL;
   }
-  
-  /* Destroy the Tree View */
-  //gtk_widget_destroy(event_viewer_data->tree_v);
-  
-  /*  Clear raw event list */
-  //gtk_list_store_clear(event_viewer_data->store_m);
-  //gtk_widget_destroy(GTK_WIDGET(event_viewer_data->store_m));
-  
-  //gui_events_free(event_viewer_data);
 }
 
-//FIXME : call hGuiEvents_Destructor for corresponding data upon widget destroy
 
 static void
 tree_selection_changed_cb (GtkTreeSelection *selection, gpointer data)
@@ -1275,18 +1144,6 @@ tree_selection_changed_cb (GtkTreeSelection *selection, gpointer data)
 }
 
 
-int event_selected_hook(void *hook_data, void *call_data)
-{
-  EventViewerData *event_viewer_data = (EventViewerData*) hook_data;
-  guint *event_number = (guint*) call_data;
-  
-  event_viewer_data->currently_selected_event = *event_number;
-  event_viewer_data->selected_event = TRUE ;
-  
-  tree_v_set_cursor(event_viewer_data);
-
-}
-
 #if 0
 /* If every module uses the filter, maybe these two 
  * (add/remove_context_hooks functions) should be put in common place
@@ -1425,48 +1282,58 @@ gboolean update_current_time(void * hook_data, void * call_data)
 {
   EventViewerData *event_viewer_data = (EventViewerData*) hook_data;
   const LttTime * current_time = (LttTime*)call_data;
-  guint64 nsec = current_time->tv_sec * NANOSECONDS_PER_SECOND 
-                  + current_time->tv_nsec;
+  guint64 nsec = (guint64)current_time->tv_sec * NANOSECONDS_PER_SECOND 
+                  + (guint64)current_time->tv_nsec;
   GtkTreeIter iter;
   guint64 time;
-  int count = -1;
   GtkTreeModel* model = (GtkTreeModel*)event_viewer_data->store_m;
   GList * list;
   EventFields * data, *data1;
   GtkTreePath* path;
   char str_path[64];
-  int i, j;
+  guint i;
+  gint  j;
   LttTime t;
   LttvTracesetContext * tsc =
         lttvwindow_get_traceset_context(event_viewer_data->tab);
   TimeInterval time_span = tsc->time_span;
 
   if(!event_viewer_data->event_fields_queue->head) return FALSE;
-
+#if 0
   if(event_viewer_data->current_time_updated ){
     event_viewer_data->current_time_updated = FALSE;
     return FALSE;
   }
-
+#endif //0
   //check if the event is shown in the current viewer
+  gint count = 0;
+  gboolean event_shown = FALSE;
   if(gtk_tree_model_get_iter_first(model, &iter)){
-    while(1){
-      gtk_tree_model_get(model, &iter, TIME_COLUMN, &time, -1);
-      if(time < nsec){
-  if(!gtk_tree_model_iter_next(model, &iter)){
-    count = -1;
-    break;
-  }
-  count++;
-      }else{
-  break;
+    gtk_tree_model_get(model, &iter, TIME_COLUMN, &time, -1);
+    if(time > nsec){
+      /* Event is before the list */
+    } else {
+      /* Event can be in the list */
+      if(time >= nsec){
+        /* found */
+        event_shown = TRUE;
+      } else {
+        while(gtk_tree_model_iter_next(model, &iter)) {
+          gtk_tree_model_get(model, &iter, TIME_COLUMN, &time, -1);
+          count++;
+          if(time >= nsec){
+            /* found */
+            event_shown = TRUE;
+            break;
+          }
+        }
       }
     }
-    //    event_selected_hook(event_viewer_data, &count);
   }
 
-  //the event is not shown in the current viewer
-  if(count == -1){
+  if(!event_shown)
+  {
+    //the event is not shown in the current viewer
     count = 0;
     //check if the event is in the buffer
     list = event_viewer_data->event_fields_queue->head;
@@ -1484,7 +1351,8 @@ gboolean update_current_time(void * hook_data, void * call_data)
   }
   break;
       }
-      if(event_viewer_data->event_fields_queue->length-count < event_viewer_data->num_visible_events){
+      if((gint)event_viewer_data->event_fields_queue->length-count
+              < event_viewer_data->num_visible_events){
   j = event_viewer_data->event_fields_queue->length - event_viewer_data->num_visible_events;
   count -= j;
   data = (EventFields*)g_list_nth_data(list,j);
@@ -1493,9 +1361,9 @@ gboolean update_current_time(void * hook_data, void * call_data)
   count = 0;
       }
       t = ltt_time_sub(data->time, time_span.start_time);
-      event_viewer_data->vadjust_c->value = ltt_time_to_double(t) * NANOSECONDS_PER_SECOND;
+      event_viewer_data->vadjust_c->value = ltt_time_to_double(t);
       //gtk_adjustment_set_value(event_viewer_data->vadjust_c, 
-      //                         ltt_time_to_double(t) * NANOSECONDS_PER_SECOND);
+      //                         ltt_time_to_double(t));
       //g_signal_stop_emission_by_name(G_OBJECT(event_viewer_data->vadjust_c), "value-changed");
       event_viewer_data->previous_value = event_viewer_data->vadjust_c->value;
       insert_data_into_model(event_viewer_data,j, j+event_viewer_data->num_visible_events); 
@@ -1503,12 +1371,12 @@ gboolean update_current_time(void * hook_data, void * call_data)
 
     }else{//the event is not in the buffer
       LttTime start = ltt_time_sub(*current_time, time_span.start_time);
-      double position = ltt_time_to_double(start) * NANOSECONDS_PER_SECOND;
+      double position = ltt_time_to_double(start);
       gtk_adjustment_set_value(event_viewer_data->vadjust_c, position);
     }
   }
 
-  sprintf(str_path,"%d\0",count);
+  sprintf(str_path,"%d",count);
   path = gtk_tree_path_new_from_string (str_path);
   gtk_tree_view_set_cursor(GTK_TREE_VIEW(event_viewer_data->tree_v), path, NULL, FALSE);
   //g_signal_stop_emission_by_name(G_OBJECT(event_viewer_data->tree_v), "cursor-changed");
@@ -1530,19 +1398,14 @@ gboolean traceset_changed(void * hook_data, void * call_data)
   event_viewer_data->append = TRUE;
 
   end = ltt_time_sub(time_span.end_time, time_span.start_time);
-  event_viewer_data->vadjust_c->upper = ltt_time_to_double(end) * NANOSECONDS_PER_SECOND;
+  event_viewer_data->vadjust_c->upper = ltt_time_to_double(end);
+  g_signal_emit_by_name(event_viewer_data->vadjust_c, "value-changed");
   //  event_viewer_data->vadjust_c->value = 0;
 
   return FALSE;
 }
 
 
-void tree_v_grab_focus(GtkWidget *widget, gpointer data){
-  EventViewerData *event_viewer_data = (EventViewerData *)data;
-  Tab * tab = event_viewer_data->tab;
-  lttvwindow_report_focus(tab, event_viewer_data->hbox_v);
-}
-
 void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
 {
   EventFields * data;
@@ -1565,7 +1428,7 @@ void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
       list    = event_viewer_data->event_fields_queue->head;
       tmpList = event_viewer_data->event_fields_queue_tmp->head;
       if(event_viewer_data->append){
-  for(i= event_viewer_data->event_fields_queue->length-1;i>=0;i--){
+  for(i=(gint)event_viewer_data->event_fields_queue->length-1;i>=0;i--){
     data = (EventFields*)g_list_nth_data(list,i);
     len = data->pid==0 ? -2 : data->pid;
     if(data->cpu_id+1 > pid_array->len){
@@ -1581,7 +1444,7 @@ void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
     }   
   }
 
-  for(i=0;i<event_viewer_data->event_fields_queue_tmp->length;i++){
+  for(i=0;i<(gint)event_viewer_data->event_fields_queue_tmp->length;i++){
     data = (EventFields*)g_list_nth_data(tmpList,i);
     len = data->pid==0 ? -2 : data->pid;
     if(data->cpu_id+1 > tmp_pid_array->len){
@@ -1597,7 +1460,7 @@ void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
     }   
   }
       }else{
-  for(i=0;i<event_viewer_data->event_fields_queue->length;i++){
+  for(i=0;i<(gint)event_viewer_data->event_fields_queue->length;i++){
     data = (EventFields*)g_list_nth_data(list,i);
     len = data->pid==0 ? -2 : data->pid;
     if(data->cpu_id+1 > pid_array->len){
@@ -1613,7 +1476,7 @@ void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
     }   
   }
 
-  for(i=event_viewer_data->event_fields_queue_tmp->length-1;i>=0;i--){
+  for(i=(gint)event_viewer_data->event_fields_queue_tmp->length-1;i>=0;i--){
     data = (EventFields*)g_list_nth_data(tmpList,i);
     len = data->pid==0 ? -2 : data->pid;
     if(data->cpu_id+1 > tmp_pid_array->len){
@@ -1630,7 +1493,8 @@ void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
   }
       }
       
-      len = pid_array->len > tmp_pid_array->len ? tmp_pid_array->len : pid_array->len;
+      len = (pid_array->len > tmp_pid_array->len) ? 
+                                    tmp_pid_array->len : pid_array->len;
       for(j=0;j<len;j++){
   pid = g_array_index(pid_array,int, j);
   tmpPid = g_array_index(tmp_pid_array,int,j);
@@ -1638,14 +1502,14 @@ void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
   if(tmpPid == -2) tmpPid = 0;
   
   if(pid == -1 && tmpPid != -1){
-    for(i=0;i<event_viewer_data->event_fields_queue->length;i++){
+    for(i=0;i<(gint)event_viewer_data->event_fields_queue->length;i++){
       data = (EventFields*)g_list_nth_data(list,i);
-      if(data->pid == -1 && data->cpu_id == j) data->pid = tmpPid;
+      if(data->pid == -1 && (gint)data->cpu_id == j) data->pid = tmpPid;
     }
   }else if(pid != -1 && tmpPid == -1){
-    for(i=0;i<event_viewer_data->event_fields_queue_tmp->length;i++){
+    for(i=0;i<(gint)event_viewer_data->event_fields_queue_tmp->length;i++){
       data = (EventFields*)g_list_nth_data(tmpList,i);
-      if(data->pid == -1 && data->cpu_id == j) data->pid = pid;
+      if(data->pid == -1 && (gint)data->cpu_id == j) data->pid = pid;
     }
   }
       }
@@ -1655,8 +1519,9 @@ void update_raw_data_array(EventViewerData* event_viewer_data, unsigned size)
     g_array_free(tmp_pid_array, TRUE);
 
     //add data from tmp queue into the queue
-    event_viewer_data->number_of_events = event_viewer_data->event_fields_queue->length 
-                                        + event_viewer_data->event_fields_queue_tmp->length;
+    event_viewer_data->number_of_events = 
+                     event_viewer_data->event_fields_queue->length 
+                     + event_viewer_data->event_fields_queue_tmp->length;
     if(event_viewer_data->append){
       if(event_viewer_data->event_fields_queue->length > 0)
   event_viewer_data->current_event_index = event_viewer_data->event_fields_queue->length - 1;
@@ -1689,9 +1554,26 @@ void get_events(EventViewerData* event_viewer_data, LttTime start,
                               NULL,
                               event_viewer_data->event_hooks,
                               NULL);
+  if(event_viewer_data->append == TRUE) {
+    /* append data */
+    lttv_process_traceset_middle(tsc, end, max_num_events, NULL);
+  } else{
+    guint count;
+    LttvTracefileContext *tfc;
+    /* prepend data */
+    do {
+      /* clear the temp list */
+      while(g_queue_pop_head(event_viewer_data->event_fields_queue_tmp));
+      /* read max_num events max */
+      count = lttv_process_traceset_middle(tsc, end, max_num_events, NULL);
+      /* loop if reached the max number of events to read, but not
+       * if end of trace or end time reached.*/
+      tfc = lttv_traceset_context_get_current_tfc(tsc);
+    } while(max_num_events == count 
+             && (tfc != NULL && ltt_time_compare(tfc->timestamp, end) < 0));
 
-  lttv_process_traceset_middle(tsc, end, max_num_events, NULL);
-
+  }
+  
   //remove_context_hooks(event_viewer_data,tsc);
   lttv_process_traceset_end(tsc,
                             NULL,
@@ -1731,6 +1613,8 @@ void get_events(EventViewerData* event_viewer_data, LttTime start,
   events_request->end_time = ltt_time_infinite;
   events_request->num_events = max_num_events;
   events_request->end_position = NULL;
+  events_request->trace = -1;  /* FIXME */
+  events_request->hooks = NULL;  /* FIXME */
   events_request->before_chunk_traceset = NULL;
   events_request->before_chunk_trace = NULL;
   events_request->before_chunk_tracefile = NULL;
@@ -1816,6 +1700,19 @@ static void get_event_detail(LttEvent *e, LttField *f, GString * s)
       }
       g_string_append_printf(s, " }");
       break;
+
+    case LTT_UNION:
+      g_string_append_printf(s, " {");
+      nb = ltt_type_member_number(type);
+      for(i = 0 ; i < nb ; i++) {
+        element = ltt_field_member(f,i);
+        ltt_type_member_type(type, i, &name);
+        g_string_append_printf(s, " %s = ", name);        
+        get_event_detail(e, element, s);
+      }
+      g_string_append_printf(s, " }");
+      break;
+
   }
   
 }
@@ -1892,7 +1789,7 @@ gboolean parse_event(void *hook_data, void *call_data)
     tmp_event_fields->pid = in;
     if(prev_event_fields && prev_event_fields->pid == -1){
       list = event_viewer_data->event_fields_queue_tmp->head;
-      for(i=0;i<event_viewer_data->event_fields_queue_tmp->length;i++){
+      for(i=0;i<(gint)event_viewer_data->event_fields_queue_tmp->length;i++){
   data = (EventFields *)g_list_nth_data(list,i);
   if(data->cpu_id == tmp_event_fields->cpu_id){
     data->pid = out;
@@ -1972,7 +1869,8 @@ void remove_all_items_from_queue(GQueue *q)
  */
 static void init() {
 
-  lttvwindow_register_constructor("/",
+  lttvwindow_register_constructor("guievents",
+                                  "/",
                                   "Insert Event Viewer",
                                   hGuiEventsInsert_xpm,
                                   "Insert Event Viewer",
@@ -1991,9 +1889,6 @@ void event_destroy_walk(gpointer data, gpointer user_data)
  * everything that has been registered in the gtkTraceSet API.
  */
 static void destroy() {
-  int i;
-  
-  EventViewerData *event_viewer_data;
   
   g_slist_foreach(g_event_viewer_data_list, event_destroy_walk, NULL );
   g_slist_free(g_event_viewer_data_list);
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