move all projects into the trunk directory
[lttv.git] / ltt / branches / poly / lttv / modules / gui / controlflow / eventhooks.c
diff --git a/ltt/branches/poly/lttv/modules/gui/controlflow/eventhooks.c b/ltt/branches/poly/lttv/modules/gui/controlflow/eventhooks.c
deleted file mode 100644 (file)
index db1604c..0000000
+++ /dev/null
@@ -1,2706 +0,0 @@
-/* This file is part of the Linux Trace Toolkit viewer
- * Copyright (C) 2003-2004 Mathieu Desnoyers
- *
- * 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.
- */
-
-
-/*****************************************************************************
- *                       Hooks to be called by the main window               *
- *****************************************************************************/
-
-
-/* Event hooks are the drawing hooks called during traceset read. They draw the
- * icons, text, lines and background color corresponding to the events read.
- *
- * Two hooks are used for drawing : before_schedchange and after_schedchange hooks. The
- * before_schedchange is called before the state update that occurs with an event and
- * the after_schedchange hook is called after this state update.
- *
- * The before_schedchange hooks fulfill the task of drawing the visible objects that
- * corresponds to the data accumulated by the after_schedchange hook.
- *
- * The after_schedchange hook accumulates the data that need to be shown on the screen
- * (items) into a queue. Then, the next before_schedchange hook will draw what that
- * queue contains. That's the Right Way (TM) of drawing items on the screen,
- * because we need to draw the background first (and then add icons, text, ...
- * over it), but we only know the length of a background region once the state
- * corresponding to it is over, which happens to be at the next before_schedchange
- * hook.
- *
- * We also have a hook called at the end of a chunk to draw the information left
- * undrawn in each process queue. We use the current time as end of
- * line/background.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-//#define PANGO_ENABLE_BACKEND
-#include <gtk/gtk.h>
-#include <gdk/gdk.h>
-#include <glib.h>
-#include <assert.h>
-#include <string.h>
-#include <stdio.h>
-
-//#include <pango/pango.h>
-
-#include <ltt/event.h>
-#include <ltt/time.h>
-#include <ltt/trace.h>
-
-#include <lttv/lttv.h>
-#include <lttv/hook.h>
-#include <lttv/state.h>
-#include <lttvwindow/lttvwindow.h>
-#include <lttvwindow/lttvwindowtraces.h>
-#include <lttvwindow/support.h>
-
-
-#include "eventhooks.h"
-#include "cfv.h"
-#include "processlist.h"
-#include "drawing.h"
-
-
-#define MAX_PATH_LEN 256
-#define STATE_LINE_WIDTH 6
-#define COLLISION_POSITION(height) (((height - STATE_LINE_WIDTH)/2) -3)
-
-extern GSList *g_legend_list;
-
-
-/* Action to do when background computation completed.
- *
- * Wait for all the awaited computations to be over.
- */
-
-static gint background_ready(void *hook_data, void *call_data)
-{
-  ControlFlowData *control_flow_data = (ControlFlowData *)hook_data;
-  LttvTrace *trace = (LttvTrace*)call_data;
-
-  control_flow_data->background_info_waiting--;
-  
-  if(control_flow_data->background_info_waiting == 0) {
-    g_message("control flow viewer : background computation data ready.");
-
-    drawing_clear(control_flow_data->drawing);
-    processlist_clear(control_flow_data->process_list);
-    gtk_widget_set_size_request(
-      control_flow_data->drawing->drawing_area,
-                -1, processlist_get_height(control_flow_data->process_list));
-    redraw_notify(control_flow_data, NULL);
-  }
-
-  return 0;
-}
-
-
-/* Request background computation. Verify if it is in progress or ready first.
- * Only for each trace in the tab's traceset.
- */
-static void request_background_data(ControlFlowData *control_flow_data)
-{
-  LttvTracesetContext * tsc =
-        lttvwindow_get_traceset_context(control_flow_data->tab);
-  gint num_traces = lttv_traceset_number(tsc->ts);
-  gint i;
-  LttvTrace *trace;
-  LttvTraceState *tstate;
-
-  LttvHooks *background_ready_hook = 
-    lttv_hooks_new();
-  lttv_hooks_add(background_ready_hook, background_ready, control_flow_data,
-      LTTV_PRIO_DEFAULT);
-  control_flow_data->background_info_waiting = 0;
-  
-  for(i=0;i<num_traces;i++) {
-    trace = lttv_traceset_get(tsc->ts, i);
-    tstate = LTTV_TRACE_STATE(tsc->traces[i]);
-
-    if(lttvwindowtraces_get_ready(g_quark_from_string("state"),trace)==FALSE
-        && !tstate->has_precomputed_states) {
-
-      if(lttvwindowtraces_get_in_progress(g_quark_from_string("state"),
-                                          trace) == FALSE) {
-        /* We first remove requests that could have been done for the same
-         * information. Happens when two viewers ask for it before servicing
-         * starts.
-         */
-        if(!lttvwindowtraces_background_request_find(trace, "state"))
-          lttvwindowtraces_background_request_queue(
-              main_window_get_widget(control_flow_data->tab), trace, "state");
-        lttvwindowtraces_background_notify_queue(control_flow_data,
-                                                 trace,
-                                                 ltt_time_infinite,
-                                                 NULL,
-                                                 background_ready_hook);
-        control_flow_data->background_info_waiting++;
-      } else { /* in progress */
-      
-        lttvwindowtraces_background_notify_current(control_flow_data,
-                                                   trace,
-                                                   ltt_time_infinite,
-                                                   NULL,
-                                                   background_ready_hook);
-        control_flow_data->background_info_waiting++;
-      }
-    } else {
-      /* Data ready. By its nature, this viewer doesn't need to have
-       * its data ready hook called there, because a background
-       * request is always linked with a redraw.
-       */
-    }
-    
-  }
-
-  lttv_hooks_destroy(background_ready_hook);
-}
-
-
-
-
-/**
- * Event Viewer's constructor hook
- *
- * This constructor is given as a parameter to the menuitem and toolbar button
- * registration. It creates the list.
- * @param tab A pointer to the parent tab.
- * @return The widget created.
- */
-GtkWidget *
-h_guicontrolflow(LttvPlugin *plugin)
-{
-  LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin);
-  Tab *tab = ptab->tab;
-  g_info("h_guicontrolflow, %p", tab);
-  ControlFlowData *control_flow_data = guicontrolflow(ptab);
-  
-  control_flow_data->tab = tab;
-  
-  // Unreg done in the GuiControlFlow_Destructor
-  lttvwindow_register_traceset_notify(tab,
-        traceset_notify,
-        control_flow_data);
-    
-  lttvwindow_register_time_window_notify(tab,
-                                         update_time_window_hook,
-                                         control_flow_data);
-  lttvwindow_register_current_time_notify(tab,
-                                          update_current_time_hook,
-                                          control_flow_data);
-  lttvwindow_register_redraw_notify(tab,
-                                    redraw_notify,
-                                    control_flow_data);
-  lttvwindow_register_continue_notify(tab,
-                                      continue_notify,
-                                      control_flow_data);
-  request_background_data(control_flow_data);
-  
-
-  return guicontrolflow_get_widget(control_flow_data) ;
-  
-}
-
-int event_selected_hook(void *hook_data, void *call_data)
-{
-  ControlFlowData *control_flow_data = (ControlFlowData*) hook_data;
-  guint *event_number = (guint*) call_data;
-
-  g_debug("DEBUG : event selected by main window : %u", *event_number);
-  
-  return 0;
-}
-
-/* Function that selects the color of status&exemode line */
-static inline PropertiesLine prepare_s_e_line(LttvProcessState *process)
-{
-  PropertiesLine prop_line;
-  prop_line.line_width = STATE_LINE_WIDTH;
-  prop_line.style = GDK_LINE_SOLID;
-  prop_line.y = MIDDLE;
-  //GdkColormap *colormap = gdk_colormap_get_system();
-  
-  if(process->state->s == LTTV_STATE_RUN) {
-    if(process->state->t == LTTV_STATE_USER_MODE)
-      prop_line.color = drawing_colors[COL_RUN_USER_MODE];
-    else if(process->state->t == LTTV_STATE_SYSCALL)
-      prop_line.color = drawing_colors[COL_RUN_SYSCALL];
-    else if(process->state->t == LTTV_STATE_TRAP)
-      prop_line.color = drawing_colors[COL_RUN_TRAP];
-    else if(process->state->t == LTTV_STATE_IRQ)
-      prop_line.color = drawing_colors[COL_RUN_IRQ];
-    else if(process->state->t == LTTV_STATE_SOFT_IRQ)
-      prop_line.color = drawing_colors[COL_RUN_SOFT_IRQ];
-    else if(process->state->t == LTTV_STATE_MODE_UNKNOWN)
-      prop_line.color = drawing_colors[COL_MODE_UNKNOWN];
-    else
-      g_assert(FALSE);   /* RUNNING MODE UNKNOWN */
-  } else if(process->state->s == LTTV_STATE_WAIT) {
-    /* We don't show if we wait while in user mode, trap, irq or syscall */
-    prop_line.color = drawing_colors[COL_WAIT];
-  } else if(process->state->s == LTTV_STATE_WAIT_CPU) {
-    /* We don't show if we wait for CPU while in user mode, trap, irq
-     * or syscall */
-    prop_line.color = drawing_colors[COL_WAIT_CPU];
-  } else if(process->state->s == LTTV_STATE_ZOMBIE) {
-    prop_line.color = drawing_colors[COL_ZOMBIE];
-  } else if(process->state->s == LTTV_STATE_WAIT_FORK) {
-    prop_line.color = drawing_colors[COL_WAIT_FORK];
-  } else if(process->state->s == LTTV_STATE_EXIT) {
-    prop_line.color = drawing_colors[COL_EXIT];
-  } else if(process->state->s == LTTV_STATE_UNNAMED) {
-    prop_line.color = drawing_colors[COL_UNNAMED];
-  } else if(process->state->s == LTTV_STATE_DEAD) {
-    prop_line.color = drawing_colors[COL_DEAD];
-  } else {
-               g_critical("unknown state : %s", g_quark_to_string(process->state->s));
-    g_assert(FALSE);   /* UNKNOWN STATE */
-       }
-  
-  return prop_line;
-
-}
-
-
-/* before_schedchange_hook
- * 
- * This function basically draw lines and icons. Two types of lines are drawn :
- * one small (3 pixels?) representing the state of the process and the second
- * type is thicker (10 pixels?) representing on which CPU a process is running
- * (and this only in running state).
- *
- * Extremums of the lines :
- * x_min : time of the last event context for this process kept in memory.
- * x_max : time of the current event.
- * y : middle of the process in the process list. The process is found in the
- * list, therefore is it's position in pixels.
- *
- * The choice of lines'color is defined by the context of the last event for this
- * process.
- */
-
-
-int before_schedchange_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-  gint target_pid_saved = tfc->target_pid;
-
-  LttTime evtime = ltt_event_time(e);
-  LttvFilter *filter = control_flow_data->filter;
-
-  /* we are in a schedchange, before the state update. We must draw the
-   * items corresponding to the state before it changes : now is the right
-   * time to do it.
-   */
-
-  guint pid_out;
-  guint pid_in;
-  guint state_out;
-  {
-    pid_out = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
-    pid_in = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 1));
-    state_out = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 2));
-  }
-  
-  tfc->target_pid = pid_out;
-  if(!filter || !filter->head ||
-    lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL)) { 
-    /* For the pid_out */
-    /* First, check if the current process is in the state computation
-     * process list. If it is there, that means we must add it right now and
-     * draw items from the beginning of the read for it. If it is not
-     * present, it's a new process and it was not present : it will
-     * be added after the state update.  */
-    guint cpu = tfs->cpu;
-    guint trace_num = ts->parent.index;
-    LttvProcessState *process = ts->running_process[cpu];
-    /* unknown state, bad current pid */
-    if(process->pid != pid_out)
-      process = lttv_state_find_process(ts,
-          tfs->cpu, pid_out);
-    
-    if(process != NULL) {
-      /* Well, the process_out existed : we must get it in the process hash
-       * or add it, and draw its items.
-       */
-       /* Add process to process list (if not present) */
-      guint pl_height = 0;
-      HashedProcessData *hashed_process_data = NULL;
-      ProcessList *process_list = control_flow_data->process_list;
-      LttTime birth = process->creation_time;
-      
-      hashed_process_data = processlist_get_process_data(process_list,
-              pid_out,
-              process->cpu,
-              &birth,
-              trace_num);
-      if(hashed_process_data == NULL)
-      {
-        g_assert(pid_out == 0 || pid_out != process->ppid);
-        /* Process not present */
-        ProcessInfo *process_info;
-        Drawing_t *drawing = control_flow_data->drawing;
-        processlist_add(process_list,
-            drawing,
-            pid_out,
-            process->tgid,
-            process->cpu,
-            process->ppid,
-            &birth,
-            trace_num,
-            process->name,
-            process->brand,
-            &pl_height,
-            &process_info,
-            &hashed_process_data);
-        gtk_widget_set_size_request(drawing->drawing_area,
-                                    -1,
-                                    pl_height);
-        gtk_widget_queue_draw(drawing->drawing_area);
-
-      }
-  
-      /* Now, the process is in the state hash and our own process hash.
-       * We definitely can draw the items related to the ending state.
-       */
-      
-      if(ltt_time_compare(hashed_process_data->next_good_time,
-                          evtime) > 0)
-      {
-        if(hashed_process_data->x.middle_marked == FALSE) {
-    
-          TimeWindow time_window = 
-            lttvwindow_get_time_window(control_flow_data->tab);
-#ifdef EXTRA_CHECK
-          if(ltt_time_compare(evtime, time_window.start_time) == -1
-                || ltt_time_compare(evtime, time_window.end_time) == 1)
-                    return FALSE;
-#endif //EXTRA_CHECK
-          Drawing_t *drawing = control_flow_data->drawing;
-          guint width = drawing->width;
-          guint x;
-          convert_time_to_pixels(
-                    time_window,
-                    evtime,
-                    width,
-                    &x);
-
-          /* Draw collision indicator */
-          gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-          gdk_draw_point(hashed_process_data->pixmap,
-                         drawing->gc,
-                         x,
-                         COLLISION_POSITION(hashed_process_data->height));
-          hashed_process_data->x.middle_marked = TRUE;
-        }
-      } else {
-        TimeWindow time_window = 
-          lttvwindow_get_time_window(control_flow_data->tab);
-#ifdef EXTRA_CHECK
-        if(ltt_time_compare(evtime, time_window.start_time) == -1
-              || ltt_time_compare(evtime, time_window.end_time) == 1)
-                  return FALSE;
-#endif //EXTRA_CHECK
-        Drawing_t *drawing = control_flow_data->drawing;
-        guint width = drawing->width;
-        guint x;
-        convert_time_to_pixels(
-                  time_window,
-                  evtime,
-                  width,
-                  &x);
-
-
-        /* Jump over draw if we are at the same x position */
-        if(x == hashed_process_data->x.middle &&
-             hashed_process_data->x.middle_used)
-        {
-          if(hashed_process_data->x.middle_marked == FALSE) {
-            /* Draw collision indicator */
-            gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-            gdk_draw_point(hashed_process_data->pixmap,
-                           drawing->gc,
-                           x,
-                           COLLISION_POSITION(hashed_process_data->height));
-            hashed_process_data->x.middle_marked = TRUE;
-          }
-          /* jump */
-        } else {
-          DrawContext draw_context;
-
-          /* Now create the drawing context that will be used to draw
-           * items related to the last state. */
-          draw_context.drawable = hashed_process_data->pixmap;
-          draw_context.gc = drawing->gc;
-          draw_context.pango_layout = drawing->pango_layout;
-          draw_context.drawinfo.start.x = hashed_process_data->x.middle;
-          draw_context.drawinfo.end.x = x;
-
-          draw_context.drawinfo.y.over = 1;
-          draw_context.drawinfo.y.middle = (hashed_process_data->height/2);
-          draw_context.drawinfo.y.under = hashed_process_data->height;
-
-          draw_context.drawinfo.start.offset.over = 0;
-          draw_context.drawinfo.start.offset.middle = 0;
-          draw_context.drawinfo.start.offset.under = 0;
-          draw_context.drawinfo.end.offset.over = 0;
-          draw_context.drawinfo.end.offset.middle = 0;
-          draw_context.drawinfo.end.offset.under = 0;
-
-          {
-            /* Draw the line */
-            PropertiesLine prop_line = prepare_s_e_line(process);
-            draw_line((void*)&prop_line, (void*)&draw_context);
-
-          }
-          /* become the last x position */
-          hashed_process_data->x.middle = x;
-          hashed_process_data->x.middle_used = TRUE;
-          hashed_process_data->x.middle_marked = FALSE;
-
-          /* Calculate the next good time */
-          convert_pixels_to_time(width, x+1, time_window,
-                                 &hashed_process_data->next_good_time);
-        }
-      }
-    }
-  }
-
-  tfc->target_pid = pid_in;
-  if(!filter || !filter->head ||
-    lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL)) { 
-    /* For the pid_in */
-    /* First, check if the current process is in the state computation
-     * process list. If it is there, that means we must add it right now and
-     * draw items from the beginning of the read for it. If it is not
-     * present, it's a new process and it was not present : it will
-     * be added after the state update.  */
-    LttvProcessState *process;
-    process = lttv_state_find_process(ts,
-        tfs->cpu, pid_in);
-    guint trace_num = ts->parent.index;
-    
-    if(process != NULL) {
-      /* Well, the process existed : we must get it in the process hash
-       * or add it, and draw its items.
-       */
-       /* Add process to process list (if not present) */
-      guint pl_height = 0;
-      HashedProcessData *hashed_process_data = NULL;
-      ProcessList *process_list = control_flow_data->process_list;
-      LttTime birth = process->creation_time;
-      
-      hashed_process_data = processlist_get_process_data(process_list,
-              pid_in,
-              tfs->cpu,
-              &birth,
-              trace_num);
-      if(hashed_process_data == NULL)
-      {
-        g_assert(pid_in == 0 || pid_in != process->ppid);
-        /* Process not present */
-        ProcessInfo *process_info;
-        Drawing_t *drawing = control_flow_data->drawing;
-        processlist_add(process_list,
-            drawing,
-            pid_in,
-            process->tgid,
-            tfs->cpu,
-            process->ppid,
-            &birth,
-            trace_num,
-            process->name,
-            process->brand,
-            &pl_height,
-            &process_info,
-            &hashed_process_data);
-        gtk_widget_set_size_request(drawing->drawing_area,
-                                    -1,
-                                    pl_height);
-        gtk_widget_queue_draw(drawing->drawing_area);
-
-      }
-      //We could set the current process and hash here, but will be done
-      //by after schedchange hook
-    
-      /* Now, the process is in the state hash and our own process hash.
-       * We definitely can draw the items related to the ending state.
-       */
-      
-      if(ltt_time_compare(hashed_process_data->next_good_time,
-                          evtime) > 0)
-      {
-        if(hashed_process_data->x.middle_marked == FALSE) {
-
-          TimeWindow time_window = 
-            lttvwindow_get_time_window(control_flow_data->tab);
-#ifdef EXTRA_CHECK
-          if(ltt_time_compare(evtime, time_window.start_time) == -1
-                || ltt_time_compare(evtime, time_window.end_time) == 1)
-                    return FALSE;
-#endif //EXTRA_CHECK
-          Drawing_t *drawing = control_flow_data->drawing;
-          guint width = drawing->width;
-          guint x;
-          convert_time_to_pixels(
-                    time_window,
-                    evtime,
-                    width,
-                    &x);
-
-          /* Draw collision indicator */
-          gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-          gdk_draw_point(hashed_process_data->pixmap,
-                         drawing->gc,
-                         x,
-                         COLLISION_POSITION(hashed_process_data->height));
-          hashed_process_data->x.middle_marked = TRUE;
-        }
-      } else {
-        TimeWindow time_window = 
-          lttvwindow_get_time_window(control_flow_data->tab);
-#ifdef EXTRA_CHECK
-        if(ltt_time_compare(evtime, time_window.start_time) == -1
-              || ltt_time_compare(evtime, time_window.end_time) == 1)
-                  return FALSE;
-#endif //EXTRA_CHECK
-        Drawing_t *drawing = control_flow_data->drawing;
-        guint width = drawing->width;
-        guint x;
-
-        convert_time_to_pixels(
-                  time_window,
-                  evtime,
-                  width,
-                  &x);
-
-
-        /* Jump over draw if we are at the same x position */
-        if(x == hashed_process_data->x.middle &&
-            hashed_process_data->x.middle_used)
-        {
-          if(hashed_process_data->x.middle_marked == FALSE) {
-            /* Draw collision indicator */
-            gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-            gdk_draw_point(hashed_process_data->pixmap,
-                           drawing->gc,
-                           x,
-                           COLLISION_POSITION(hashed_process_data->height));
-            hashed_process_data->x.middle_marked = TRUE;
-          }
-          /* jump */
-        } else {
-          DrawContext draw_context;
-
-          /* Now create the drawing context that will be used to draw
-           * items related to the last state. */
-          draw_context.drawable = hashed_process_data->pixmap;
-          draw_context.gc = drawing->gc;
-          draw_context.pango_layout = drawing->pango_layout;
-          draw_context.drawinfo.start.x = hashed_process_data->x.middle;
-          draw_context.drawinfo.end.x = x;
-
-          draw_context.drawinfo.y.over = 1;
-          draw_context.drawinfo.y.middle = (hashed_process_data->height/2);
-          draw_context.drawinfo.y.under = hashed_process_data->height;
-
-          draw_context.drawinfo.start.offset.over = 0;
-          draw_context.drawinfo.start.offset.middle = 0;
-          draw_context.drawinfo.start.offset.under = 0;
-          draw_context.drawinfo.end.offset.over = 0;
-          draw_context.drawinfo.end.offset.middle = 0;
-          draw_context.drawinfo.end.offset.under = 0;
-
-          {
-            /* Draw the line */
-            PropertiesLine prop_line = prepare_s_e_line(process);
-            draw_line((void*)&prop_line, (void*)&draw_context);
-          }
-
-          
-          /* become the last x position */
-          hashed_process_data->x.middle = x;
-          hashed_process_data->x.middle_used = TRUE;
-          hashed_process_data->x.middle_marked = FALSE;
-
-          /* Calculate the next good time */
-          convert_pixels_to_time(width, x+1, time_window,
-                                 &hashed_process_data->next_good_time);
-        }
-      }
-    } else
-      g_warning("Cannot find pin_in in schedchange %u", pid_in);
-  }
-  tfc->target_pid = target_pid_saved;
-  return 0;
-
-
-
-
-  /* Text dump */
-#ifdef DONTSHOW
-  GString *string = g_string_new("");;
-  gboolean field_names = TRUE, state = TRUE;
-
-  lttv_event_to_string(e, tfc->tf, string, TRUE, field_names, tfs);
-  g_string_append_printf(string,"\n");  
-
-  if(state) {
-    g_string_append_printf(string, " %s",
-        g_quark_to_string(tfs->process->state->s));
-  }
-
-  g_info("%s",string->str);
-
-  g_string_free(string, TRUE);
-  
-  /* End of text dump */
-#endif //DONTSHOW
-
-}
-
-/* after_schedchange_hook
- * 
- * The draw after hook is called by the reading API to have a
- * particular event drawn on the screen.
- * @param hook_data ControlFlowData structure of the viewer. 
- * @param call_data Event context.
- *
- * This function adds items to be drawn in a queue for each process.
- * 
- */
-int after_schedchange_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  LttTime evtime = ltt_event_time(e);
-
-  /* Add process to process list (if not present) */
-  LttvProcessState *process_in;
-  LttTime birth;
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data_in = NULL;
-
-  ProcessList *process_list = control_flow_data->process_list;
-  
-  guint pid_in;
-  {
-    guint pid_out;
-    pid_out = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
-    pid_in = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 1));
-  }
-
-  tfc->target_pid = pid_in;
-  if(!filter || !filter->head ||
-    lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL)) { 
-    /* Find process pid_in in the list... */
-    //process_in = lttv_state_find_process(ts, ANY_CPU, pid_in);
-    //process_in = tfs->process;
-    guint cpu = tfs->cpu;
-    guint trace_num = ts->parent.index;
-    process_in = ts->running_process[cpu];
-    /* It should exist, because we are after the state update. */
-#ifdef EXTRA_CHECK
-    g_assert(process_in != NULL);
-#endif //EXTRA_CHECK
-    birth = process_in->creation_time;
-  
-    hashed_process_data_in = processlist_get_process_data(process_list,
-            pid_in,
-            process_in->cpu,
-            &birth,
-            trace_num);
-    if(hashed_process_data_in == NULL)
-    {
-      g_assert(pid_in == 0 || pid_in != process_in->ppid);
-      ProcessInfo *process_info;
-      Drawing_t *drawing = control_flow_data->drawing;
-      /* Process not present */
-      processlist_add(process_list,
-          drawing,
-          pid_in,
-          process_in->tgid,
-          process_in->cpu,
-          process_in->ppid,
-          &birth,
-          trace_num,
-          process_in->name,
-          process_in->brand,
-          &pl_height,
-          &process_info,
-          &hashed_process_data_in);
-          gtk_widget_set_size_request(drawing->drawing_area,
-                                      -1,
-                                      pl_height);
-          gtk_widget_queue_draw(drawing->drawing_area);
-    }
-    /* Set the current process */
-    process_list->current_hash_data[trace_num][process_in->cpu] =
-                                               hashed_process_data_in;
-  
-    if(ltt_time_compare(hashed_process_data_in->next_good_time,
-                            evtime) <= 0)
-    {
-      TimeWindow time_window = 
-      lttvwindow_get_time_window(control_flow_data->tab);
-  
-#ifdef EXTRA_CHECK
-      if(ltt_time_compare(evtime, time_window.start_time) == -1
-          || ltt_time_compare(evtime, time_window.end_time) == 1)
-              return FALSE;
-#endif //EXTRA_CHECK
-      Drawing_t *drawing = control_flow_data->drawing;
-      guint width = drawing->width;
-      guint new_x;
-      
-      convert_time_to_pixels(
-          time_window,
-          evtime,
-          width,
-          &new_x);
-  
-      if(hashed_process_data_in->x.middle != new_x) {
-        hashed_process_data_in->x.middle = new_x;
-        hashed_process_data_in->x.middle_used = FALSE;
-        hashed_process_data_in->x.middle_marked = FALSE;
-      }
-    }
-  }
-
-  return 0;
-}
-
-
-
-
-/* before_execmode_hook
- * 
- * This function basically draw lines and icons. Two types of lines are drawn :
- * one small (3 pixels?) representing the state of the process and the second
- * type is thicker (10 pixels?) representing on which CPU a process is running
- * (and this only in running state).
- *
- * Extremums of the lines :
- * x_min : time of the last event context for this process kept in memory.
- * x_max : time of the current event.
- * y : middle of the process in the process list. The process is found in the
- * list, therefore is it's position in pixels.
- *
- * The choice of lines'color is defined by the context of the last event for this
- * process.
- */
-
-
-int before_execmode_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  LttTime evtime = ltt_event_time(e);
-
-  /* we are in a execmode, before the state update. We must draw the
-   * items corresponding to the state before it changes : now is the right
-   * time to do it.
-   */
-  /* For the pid */
-  //LttvProcessState *process = tfs->process;
-  guint cpu = tfs->cpu;
-  guint trace_num = ts->parent.index;
-  LttvProcessState *process = ts->running_process[cpu];
-  g_assert(process != NULL);
-
-  guint pid = process->pid;
-
-  /* Well, the process_out existed : we must get it in the process hash
-   * or add it, and draw its items.
-   */
-   /* Add process to process list (if not present) */
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data = NULL;
-  ProcessList *process_list = control_flow_data->process_list;
-  LttTime birth = process->creation_time;
-  if(likely(process_list->current_hash_data[trace_num][cpu] != NULL)) {
-    hashed_process_data = process_list->current_hash_data[trace_num][cpu];
-  } else {
-    hashed_process_data = processlist_get_process_data(process_list,
-            pid,
-            process->cpu,
-            &birth,
-            trace_num);
-    if(unlikely(hashed_process_data == NULL))
-    {
-      g_assert(pid == 0 || pid != process->ppid);
-      ProcessInfo *process_info;
-      /* Process not present */
-      Drawing_t *drawing = control_flow_data->drawing;
-      processlist_add(process_list,
-          drawing,
-          pid,
-          process->tgid,
-          process->cpu,
-          process->ppid,
-          &birth,
-          trace_num,
-          process->name,
-          process->brand,
-          &pl_height,
-          &process_info,
-          &hashed_process_data);
-        gtk_widget_set_size_request(drawing->drawing_area,
-                                    -1,
-                                    pl_height);
-        gtk_widget_queue_draw(drawing->drawing_area);
-    }
-    /* Set the current process */
-    process_list->current_hash_data[trace_num][process->cpu] =
-                                               hashed_process_data;
-  }
-
-  /* Now, the process is in the state hash and our own process hash.
-   * We definitely can draw the items related to the ending state.
-   */
-
-  if(likely(ltt_time_compare(hashed_process_data->next_good_time,
-                      evtime) > 0))
-  {
-    if(unlikely(hashed_process_data->x.middle_marked == FALSE)) {
-      TimeWindow time_window = 
-        lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-      if(ltt_time_compare(evtime, time_window.start_time) == -1
-            || ltt_time_compare(evtime, time_window.end_time) == 1)
-                return FALSE;
-#endif //EXTRA_CHECK
-      Drawing_t *drawing = control_flow_data->drawing;
-      guint width = drawing->width;
-      guint x;
-      convert_time_to_pixels(
-                time_window,
-                evtime,
-                width,
-                &x);
-
-      /* Draw collision indicator */
-      gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-      gdk_draw_point(hashed_process_data->pixmap,
-                     drawing->gc,
-                     x,
-                     COLLISION_POSITION(hashed_process_data->height));
-      hashed_process_data->x.middle_marked = TRUE;
-    }
-  } else {
-    TimeWindow time_window = 
-      lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-    if(ltt_time_compare(evtime, time_window.start_time) == -1
-          || ltt_time_compare(evtime, time_window.end_time) == 1)
-              return FALSE;
-#endif //EXTRA_CHECK
-    Drawing_t *drawing = control_flow_data->drawing;
-    guint width = drawing->width;
-    guint x;
-
-    convert_time_to_pixels(
-        time_window,
-        evtime,
-        width,
-        &x);
-
-
-    /* Jump over draw if we are at the same x position */
-    if(unlikely(x == hashed_process_data->x.middle &&
-             hashed_process_data->x.middle_used))
-    {
-      if(unlikely(hashed_process_data->x.middle_marked == FALSE)) {
-        /* Draw collision indicator */
-        gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-        gdk_draw_point(hashed_process_data->pixmap,
-                       drawing->gc,
-                       x,
-                       COLLISION_POSITION(hashed_process_data->height));
-        hashed_process_data->x.middle_marked = TRUE;
-      }
-      /* jump */
-    } else {
-
-      DrawContext draw_context;
-      /* Now create the drawing context that will be used to draw
-       * items related to the last state. */
-      draw_context.drawable = hashed_process_data->pixmap;
-      draw_context.gc = drawing->gc;
-      draw_context.pango_layout = drawing->pango_layout;
-      draw_context.drawinfo.start.x = hashed_process_data->x.middle;
-      draw_context.drawinfo.end.x = x;
-
-      draw_context.drawinfo.y.over = 1;
-      draw_context.drawinfo.y.middle = (hashed_process_data->height/2);
-      draw_context.drawinfo.y.under = hashed_process_data->height;
-
-      draw_context.drawinfo.start.offset.over = 0;
-      draw_context.drawinfo.start.offset.middle = 0;
-      draw_context.drawinfo.start.offset.under = 0;
-      draw_context.drawinfo.end.offset.over = 0;
-      draw_context.drawinfo.end.offset.middle = 0;
-      draw_context.drawinfo.end.offset.under = 0;
-
-      {
-        /* Draw the line */
-        PropertiesLine prop_line = prepare_s_e_line(process);
-        draw_line((void*)&prop_line, (void*)&draw_context);
-
-      }
-      /* become the last x position */
-      hashed_process_data->x.middle = x;
-      hashed_process_data->x.middle_used = TRUE;
-      hashed_process_data->x.middle_marked = FALSE;
-
-      /* Calculate the next good time */
-      convert_pixels_to_time(width, x+1, time_window,
-                             &hashed_process_data->next_good_time);
-    }
-  }
-  
-  return 0;
-}
-
-/* before_process_exit_hook
- * 
- * Draw lines for process event.
- *
- * @param hook_data ControlFlowData structure of the viewer. 
- * @param call_data Event context.
- *
- * This function adds items to be drawn in a queue for each process.
- * 
- */
-
-
-int before_process_exit_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  LttTime evtime = ltt_event_time(e);
-
-  /* Add process to process list (if not present) */
-  //LttvProcessState *process = tfs->process;
-  guint cpu = tfs->cpu;
-  guint trace_num = ts->parent.index;
-  LttvProcessState *process = ts->running_process[cpu];
-  guint pid = process->pid;
-  LttTime birth;
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data = NULL;
-
-  ProcessList *process_list = control_flow_data->process_list;
-  
-  g_assert(process != NULL);
-
-  birth = process->creation_time;
-
-  if(likely(process_list->current_hash_data[trace_num][cpu] != NULL)) {
-    hashed_process_data = process_list->current_hash_data[trace_num][cpu];
-  } else {
-    hashed_process_data = processlist_get_process_data(process_list,
-          pid,
-          process->cpu,
-          &birth,
-          trace_num);
-    if(unlikely(hashed_process_data == NULL))
-    {
-      g_assert(pid == 0 || pid != process->ppid);
-      /* Process not present */
-      Drawing_t *drawing = control_flow_data->drawing;
-      ProcessInfo *process_info;
-      processlist_add(process_list,
-          drawing,
-          pid,
-          process->tgid,
-          process->cpu,
-          process->ppid,
-          &birth,
-          trace_num,
-          process->name,
-          process->brand,
-          &pl_height,
-          &process_info,
-          &hashed_process_data);
-      gtk_widget_set_size_request(drawing->drawing_area,
-                                  -1,
-                                  pl_height);
-      gtk_widget_queue_draw(drawing->drawing_area);
-    }
-  }
-
-  /* Now, the process is in the state hash and our own process hash.
-   * We definitely can draw the items related to the ending state.
-   */
-  
-  if(likely(ltt_time_compare(hashed_process_data->next_good_time,
-                      evtime) > 0))
-  {
-    if(unlikely(hashed_process_data->x.middle_marked == FALSE)) {
-      TimeWindow time_window = 
-        lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-      if(ltt_time_compare(evtime, time_window.start_time) == -1
-            || ltt_time_compare(evtime, time_window.end_time) == 1)
-                return FALSE;
-#endif //EXTRA_CHECK
-      Drawing_t *drawing = control_flow_data->drawing;
-      guint width = drawing->width;
-      guint x;
-      convert_time_to_pixels(
-                time_window,
-                evtime,
-                width,
-                &x);
-
-      /* Draw collision indicator */
-      gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-      gdk_draw_point(hashed_process_data->pixmap,
-                     drawing->gc,
-                     x,
-                     COLLISION_POSITION(hashed_process_data->height));
-      hashed_process_data->x.middle_marked = TRUE;
-    }
-  } else {
-    TimeWindow time_window = 
-      lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-    if(ltt_time_compare(evtime, time_window.start_time) == -1
-          || ltt_time_compare(evtime, time_window.end_time) == 1)
-              return FALSE;
-#endif //EXTRA_CHECK
-    Drawing_t *drawing = control_flow_data->drawing;
-    guint width = drawing->width;
-    guint x;
-
-    convert_time_to_pixels(
-        time_window,
-        evtime,
-        width,
-        &x);
-
-
-    /* Jump over draw if we are at the same x position */
-    if(unlikely(x == hashed_process_data->x.middle &&
-           hashed_process_data->x.middle_used))
-    { 
-      if(unlikely(hashed_process_data->x.middle_marked == FALSE)) {
-        /* Draw collision indicator */
-        gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-        gdk_draw_point(hashed_process_data->pixmap,
-                       drawing->gc,
-                       x,
-                       COLLISION_POSITION(hashed_process_data->height));
-        hashed_process_data->x.middle_marked = TRUE;
-      }
-      /* jump */
-    } else {
-      DrawContext draw_context;
-
-      /* Now create the drawing context that will be used to draw
-       * items related to the last state. */
-      draw_context.drawable = hashed_process_data->pixmap;
-      draw_context.gc = drawing->gc;
-      draw_context.pango_layout = drawing->pango_layout;
-      draw_context.drawinfo.start.x = hashed_process_data->x.middle;
-      draw_context.drawinfo.end.x = x;
-
-      draw_context.drawinfo.y.over = 1;
-      draw_context.drawinfo.y.middle = (hashed_process_data->height/2);
-      draw_context.drawinfo.y.under = hashed_process_data->height;
-
-      draw_context.drawinfo.start.offset.over = 0;
-      draw_context.drawinfo.start.offset.middle = 0;
-      draw_context.drawinfo.start.offset.under = 0;
-      draw_context.drawinfo.end.offset.over = 0;
-      draw_context.drawinfo.end.offset.middle = 0;
-      draw_context.drawinfo.end.offset.under = 0;
-
-      {
-        /* Draw the line */
-        PropertiesLine prop_line = prepare_s_e_line(process);
-        draw_line((void*)&prop_line, (void*)&draw_context);
-
-      }
-      /* become the last x position */
-      hashed_process_data->x.middle = x;
-      hashed_process_data->x.middle_used = TRUE;
-      hashed_process_data->x.middle_marked = FALSE;
-
-      /* Calculate the next good time */
-      convert_pixels_to_time(width, x+1, time_window,
-                             &hashed_process_data->next_good_time);
-    }
-  }
-  
-  return 0;
-
-}
-
-
-
-/* before_process_release_hook
- * 
- * Draw lines for process event.
- *
- * @param hook_data ControlFlowData structure of the viewer. 
- * @param call_data Event context.
- *
- * This function adds items to be drawn in a queue for each process.
- * 
- */
-
-
-int before_process_release_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  LttTime evtime = ltt_event_time(e);
-
-  guint trace_num = ts->parent.index;
-
-  guint pid;
-  {
-    pid = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
-  }
-
-  /* Add process to process list (if not present) */
-  /* Don't care about the process if it's not in the state hash already :
-   * that means a process that has never done anything in the trace and
-   * unknown suddently gets destroyed : no state meaningful to show. */
-  LttvProcessState *process = lttv_state_find_process(ts, ANY_CPU, pid);
-
-  if(process != NULL) {
-    LttTime birth;
-    guint pl_height = 0;
-    HashedProcessData *hashed_process_data = NULL;
-
-    ProcessList *process_list = control_flow_data->process_list;
-    
-    birth = process->creation_time;
-
-    /* Cannot use current process : this event happens on another process,
-     * action done by the parent. */
-    hashed_process_data = processlist_get_process_data(process_list,
-          pid,
-          process->cpu,
-          &birth,
-          trace_num);
-    if(unlikely(hashed_process_data == NULL))
-      /*
-       * Process already been scheduled out EXIT_DEAD, not in the process list
-       * anymore. Just return.
-       */
-      return FALSE;
-
-    /* Now, the process is in the state hash and our own process hash.
-     * We definitely can draw the items related to the ending state.
-     */
-    
-    if(likely(ltt_time_compare(hashed_process_data->next_good_time,
-                        evtime) > 0))
-    {
-      if(unlikely(hashed_process_data->x.middle_marked == FALSE)) {
-        TimeWindow time_window = 
-          lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-        if(ltt_time_compare(evtime, time_window.start_time) == -1
-              || ltt_time_compare(evtime, time_window.end_time) == 1)
-                  return FALSE;
-#endif //EXTRA_CHECK
-        Drawing_t *drawing = control_flow_data->drawing;
-        guint width = drawing->width;
-        guint x;
-        convert_time_to_pixels(
-                  time_window,
-                  evtime,
-                  width,
-                  &x);
-
-        /* Draw collision indicator */
-        gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-        gdk_draw_point(hashed_process_data->pixmap,
-                       drawing->gc,
-                       x,
-                       COLLISION_POSITION(hashed_process_data->height));
-        hashed_process_data->x.middle_marked = TRUE;
-      }
-    } else {
-      TimeWindow time_window = 
-        lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-      if(ltt_time_compare(evtime, time_window.start_time) == -1
-            || ltt_time_compare(evtime, time_window.end_time) == 1)
-                return FALSE;
-#endif //EXTRA_CHECK
-      Drawing_t *drawing = control_flow_data->drawing;
-      guint width = drawing->width;
-      guint x;
-
-      convert_time_to_pixels(
-          time_window,
-          evtime,
-          width,
-          &x);
-
-
-      /* Jump over draw if we are at the same x position */
-      if(unlikely(x == hashed_process_data->x.middle &&
-             hashed_process_data->x.middle_used))
-      { 
-        if(unlikely(hashed_process_data->x.middle_marked == FALSE)) {
-          /* Draw collision indicator */
-          gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-          gdk_draw_point(hashed_process_data->pixmap,
-                         drawing->gc,
-                         x,
-                         COLLISION_POSITION(hashed_process_data->height));
-          hashed_process_data->x.middle_marked = TRUE;
-        }
-        /* jump */
-      } else {
-        DrawContext draw_context;
-
-        /* Now create the drawing context that will be used to draw
-         * items related to the last state. */
-        draw_context.drawable = hashed_process_data->pixmap;
-        draw_context.gc = drawing->gc;
-        draw_context.pango_layout = drawing->pango_layout;
-        draw_context.drawinfo.start.x = hashed_process_data->x.middle;
-        draw_context.drawinfo.end.x = x;
-
-        draw_context.drawinfo.y.over = 1;
-        draw_context.drawinfo.y.middle = (hashed_process_data->height/2);
-        draw_context.drawinfo.y.under = hashed_process_data->height;
-
-        draw_context.drawinfo.start.offset.over = 0;
-        draw_context.drawinfo.start.offset.middle = 0;
-        draw_context.drawinfo.start.offset.under = 0;
-        draw_context.drawinfo.end.offset.over = 0;
-        draw_context.drawinfo.end.offset.middle = 0;
-        draw_context.drawinfo.end.offset.under = 0;
-
-        {
-          /* Draw the line */
-          PropertiesLine prop_line = prepare_s_e_line(process);
-          draw_line((void*)&prop_line, (void*)&draw_context);
-
-        }
-        /* become the last x position */
-        hashed_process_data->x.middle = x;
-        hashed_process_data->x.middle_used = TRUE;
-        hashed_process_data->x.middle_marked = FALSE;
-
-        /* Calculate the next good time */
-        convert_pixels_to_time(width, x+1, time_window,
-                               &hashed_process_data->next_good_time);
-      }
-    }
-  }
-
-  return 0;
-}
-
-
-
-
-
-/* after_process_fork_hook
- * 
- * Create the processlist entry for the child process. Put the last
- * position in x at the current time value.
- *
- * @param hook_data ControlFlowData structure of the viewer. 
- * @param call_data Event context.
- *
- * This function adds items to be drawn in a queue for each process.
- * 
- */
-int after_process_fork_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  LttTime evtime = ltt_event_time(e);
-
-  guint child_pid;
-  {
-    child_pid = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 1));
-  }
-
-  /* Add process to process list (if not present) */
-  LttvProcessState *process_child;
-  LttTime birth;
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data_child = NULL;
-
-  ProcessList *process_list = control_flow_data->process_list;
-
-  /* Find child in the list... */
-  process_child = lttv_state_find_process(ts, ANY_CPU, child_pid);
-  /* It should exist, because we are after the state update. */
-  g_assert(process_child != NULL);
-
-  birth = process_child->creation_time;
-  guint trace_num = ts->parent.index;
-
-  /* Cannot use current process, because this action is done by the parent
-   * on its child. */
-  hashed_process_data_child = processlist_get_process_data(process_list,
-          child_pid,
-          process_child->cpu,
-          &birth,
-          trace_num);
-  if(likely(hashed_process_data_child == NULL))
-  {
-    g_assert(child_pid == 0 || child_pid != process_child->ppid);
-    /* Process not present */
-    Drawing_t *drawing = control_flow_data->drawing;
-    ProcessInfo *process_info;
-    processlist_add(process_list,
-        drawing,
-        child_pid,
-        process_child->tgid,
-        process_child->cpu,
-        process_child->ppid,
-        &birth,
-        trace_num,
-        process_child->name,
-        process_child->brand,
-        &pl_height,
-        &process_info,
-        &hashed_process_data_child);
-      gtk_widget_set_size_request(drawing->drawing_area,
-                                  -1,
-                                  pl_height);
-      gtk_widget_queue_draw(drawing->drawing_area);
-  } else {
-          processlist_set_ppid(process_list, process_child->ppid,
-                               hashed_process_data_child);
-          processlist_set_tgid(process_list, process_child->tgid,
-                               hashed_process_data_child);
-  }
-
-
-  if(likely(ltt_time_compare(hashed_process_data_child->next_good_time,
-                        evtime) <= 0))
-  {
-    TimeWindow time_window = 
-      lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-    if(ltt_time_compare(evtime, time_window.start_time) == -1
-          || ltt_time_compare(evtime, time_window.end_time) == 1)
-              return FALSE;
-#endif //EXTRA_CHECK
-    Drawing_t *drawing = control_flow_data->drawing;
-    guint width = drawing->width;
-    guint new_x;
-    convert_time_to_pixels(
-        time_window,
-        evtime,
-        width,
-        &new_x);
-
-    if(likely(hashed_process_data_child->x.over != new_x)) {
-      hashed_process_data_child->x.over = new_x;
-      hashed_process_data_child->x.over_used = FALSE;
-      hashed_process_data_child->x.over_marked = FALSE;
-    }
-    if(likely(hashed_process_data_child->x.middle != new_x)) {
-      hashed_process_data_child->x.middle = new_x;
-      hashed_process_data_child->x.middle_used = FALSE;
-      hashed_process_data_child->x.middle_marked = FALSE;
-    }
-    if(likely(hashed_process_data_child->x.under != new_x)) {
-      hashed_process_data_child->x.under = new_x;
-      hashed_process_data_child->x.under_used = FALSE;
-      hashed_process_data_child->x.under_marked = FALSE;
-    }
-  }
-  return FALSE;
-}
-
-
-
-/* after_process_exit_hook
- * 
- * Create the processlist entry for the child process. Put the last
- * position in x at the current time value.
- *
- * @param hook_data ControlFlowData structure of the viewer. 
- * @param call_data Event context.
- *
- * This function adds items to be drawn in a queue for each process.
- * 
- */
-int after_process_exit_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  LttTime evtime = ltt_event_time(e);
-
-  /* Add process to process list (if not present) */
-  //LttvProcessState *process = tfs->process;
-  guint cpu = tfs->cpu;
-  guint trace_num = ts->parent.index;
-  LttvProcessState *process = ts->running_process[cpu];
-
-  /* It should exist, because we are after the state update. */
-  g_assert(process != NULL);
-
-  guint pid = process->pid;
-  LttTime birth;
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data = NULL;
-
-  ProcessList *process_list = control_flow_data->process_list;
-
-  birth = process->creation_time;
-
-  if(likely(process_list->current_hash_data[trace_num][cpu] != NULL) ){
-    hashed_process_data = process_list->current_hash_data[trace_num][cpu];
-  } else {
-    hashed_process_data = processlist_get_process_data(process_list,
-            pid,
-            process->cpu,
-            &birth,
-            trace_num);
-    if(unlikely(hashed_process_data == NULL))
-    {
-      g_assert(pid == 0 || pid != process->ppid);
-      /* Process not present */
-      Drawing_t *drawing = control_flow_data->drawing;
-      ProcessInfo *process_info;
-      processlist_add(process_list,
-          drawing,
-          pid,
-          process->tgid,
-          process->cpu,
-          process->ppid,
-          &birth,
-          trace_num,
-          process->name,
-          process->brand,
-          &pl_height,
-          &process_info,
-          &hashed_process_data);
-      gtk_widget_set_size_request(drawing->drawing_area,
-                                  -1,
-                                  pl_height);
-      gtk_widget_queue_draw(drawing->drawing_area);
-    }
-
-    /* Set the current process */
-    process_list->current_hash_data[trace_num][process->cpu] =
-                                             hashed_process_data;
-  }
-
-  if(unlikely(ltt_time_compare(hashed_process_data->next_good_time,
-                        evtime) <= 0))
-  {
-    TimeWindow time_window = 
-      lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-    if(ltt_time_compare(evtime, time_window.start_time) == -1
-          || ltt_time_compare(evtime, time_window.end_time) == 1)
-              return FALSE;
-#endif //EXTRA_CHECK
-    Drawing_t *drawing = control_flow_data->drawing;
-    guint width = drawing->width;
-    guint new_x;
-    convert_time_to_pixels(
-        time_window,
-        evtime,
-        width,
-        &new_x);
-    if(unlikely(hashed_process_data->x.middle != new_x)) {
-      hashed_process_data->x.middle = new_x;
-      hashed_process_data->x.middle_used = FALSE;
-      hashed_process_data->x.middle_marked = FALSE;
-    }
-  }
-
-  return FALSE;
-}
-
-
-/* Get the filename of the process to print */
-int after_fs_exec_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  guint cpu = tfs->cpu;
-  guint trace_num = ts->parent.index;
-  LttvProcessState *process = ts->running_process[cpu];
-  g_assert(process != NULL);
-
-  guint pid = process->pid;
-
-  /* Well, the process_out existed : we must get it in the process hash
-   * or add it, and draw its items.
-   */
-   /* Add process to process list (if not present) */
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data = NULL;
-  ProcessList *process_list = control_flow_data->process_list;
-  LttTime birth = process->creation_time;
-  if(likely(process_list->current_hash_data[trace_num][cpu] != NULL)) {
-    hashed_process_data = process_list->current_hash_data[trace_num][cpu];
-  } else {
-    hashed_process_data = processlist_get_process_data(process_list,
-            pid,
-            process->cpu,
-            &birth,
-            trace_num);
-    if(unlikely(hashed_process_data == NULL))
-    {
-      g_assert(pid == 0 || pid != process->ppid);
-      ProcessInfo *process_info;
-      /* Process not present */
-      Drawing_t *drawing = control_flow_data->drawing;
-      processlist_add(process_list,
-          drawing,
-          pid,
-          process->tgid,
-          process->cpu,
-          process->ppid,
-          &birth,
-          trace_num,
-          process->name,
-          process->brand,
-          &pl_height,
-          &process_info,
-          &hashed_process_data);
-        gtk_widget_set_size_request(drawing->drawing_area,
-                                    -1,
-                                    pl_height);
-        gtk_widget_queue_draw(drawing->drawing_area);
-    }
-    /* Set the current process */
-    process_list->current_hash_data[trace_num][process->cpu] =
-                                               hashed_process_data;
-  }
-
-  processlist_set_name(process_list, process->name, hashed_process_data);
-
-  return 0;
-
-}
-
-/* Get the filename of the process to print */
-int after_user_generic_thread_brand_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  guint cpu = tfs->cpu;
-  guint trace_num = ts->parent.index;
-  LttvProcessState *process = ts->running_process[cpu];
-  g_assert(process != NULL);
-
-  guint pid = process->pid;
-
-  /* Well, the process_out existed : we must get it in the process hash
-   * or add it, and draw its items.
-   */
-   /* Add process to process list (if not present) */
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data = NULL;
-  ProcessList *process_list = control_flow_data->process_list;
-  LttTime birth = process->creation_time;
-  if(likely(process_list->current_hash_data[trace_num][cpu] != NULL)) {
-    hashed_process_data = process_list->current_hash_data[trace_num][cpu];
-  } else {
-    hashed_process_data = processlist_get_process_data(process_list,
-            pid,
-            process->cpu,
-            &birth,
-            trace_num);
-    if(unlikely(hashed_process_data == NULL))
-    {
-      g_assert(pid == 0 || pid != process->ppid);
-      ProcessInfo *process_info;
-      /* Process not present */
-      Drawing_t *drawing = control_flow_data->drawing;
-      processlist_add(process_list,
-          drawing,
-          pid,
-          process->tgid,
-          process->cpu,
-          process->ppid,
-          &birth,
-          trace_num,
-          process->name,
-         process->brand,
-          &pl_height,
-          &process_info,
-          &hashed_process_data);
-        gtk_widget_set_size_request(drawing->drawing_area,
-                                    -1,
-                                    pl_height);
-        gtk_widget_queue_draw(drawing->drawing_area);
-    }
-    /* Set the current process */
-    process_list->current_hash_data[trace_num][process->cpu] =
-                                               hashed_process_data;
-  }
-
-  processlist_set_brand(process_list, process->brand, hashed_process_data);
-
-  return 0;
-
-}
-
-
-/* after_event_enum_process_hook
- * 
- * Create the processlist entry for the child process. Put the last
- * position in x at the current time value.
- *
- * @param hook_data ControlFlowData structure of the viewer. 
- * @param call_data Event context.
- *
- * This function adds items to be drawn in a queue for each process.
- * 
- */
-int after_event_enum_process_hook(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  guint first_cpu, nb_cpus, cpu;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  LttTime evtime = ltt_event_time(e);
-
-  /* Add process to process list (if not present) */
-  LttvProcessState *process_in;
-  LttTime birth;
-  guint pl_height = 0;
-  HashedProcessData *hashed_process_data_in = NULL;
-
-  ProcessList *process_list = control_flow_data->process_list;
-  guint trace_num = ts->parent.index;
-  
-  guint pid_in;
-  {
-    pid_in = ltt_event_get_long_unsigned(e, lttv_trace_get_hook_field(th, 0));
-  }
-  
-  if(pid_in == 0) {
-    first_cpu = 0;
-    nb_cpus = ltt_trace_get_num_cpu(ts->parent.t);
-  } else {
-    first_cpu = ANY_CPU;
-    nb_cpus = ANY_CPU+1;
-  }
-
-  for(cpu = first_cpu; cpu < nb_cpus; cpu++) {
-    /* Find process pid_in in the list... */
-    process_in = lttv_state_find_process(ts, cpu, pid_in);
-    //process_in = tfs->process;
-    //guint cpu = tfs->cpu;
-    //guint trace_num = ts->parent.index;
-    //process_in = ts->running_process[cpu];
-    /* It should exist, because we are after the state update. */
-  #ifdef EXTRA_CHECK
-    //g_assert(process_in != NULL);
-  #endif //EXTRA_CHECK
-    birth = process_in->creation_time;
-
-    hashed_process_data_in = processlist_get_process_data(process_list,
-            pid_in,
-            process_in->cpu,
-            &birth,
-            trace_num);
-    if(hashed_process_data_in == NULL)
-    {
-      if(pid_in != 0 && pid_in == process_in->ppid)
-        g_critical("TEST %u , %u", pid_in, process_in->ppid);
-      g_assert(pid_in == 0 || pid_in != process_in->ppid);
-      ProcessInfo *process_info;
-      Drawing_t *drawing = control_flow_data->drawing;
-      /* Process not present */
-      processlist_add(process_list,
-          drawing,
-          pid_in,
-          process_in->tgid,
-          process_in->cpu,
-          process_in->ppid,
-          &birth,
-          trace_num,
-          process_in->name,
-          process_in->brand,
-          &pl_height,
-          &process_info,
-          &hashed_process_data_in);
-          gtk_widget_set_size_request(drawing->drawing_area,
-                                      -1,
-                                      pl_height);
-          gtk_widget_queue_draw(drawing->drawing_area);
-    } else {
-      processlist_set_name(process_list, process_in->name,
-                           hashed_process_data_in);
-      processlist_set_ppid(process_list, process_in->ppid,
-                           hashed_process_data_in);
-      processlist_set_tgid(process_list, process_in->tgid,
-                           hashed_process_data_in);
-    }
-  }
-  return 0;
-}
-
-
-gint update_time_window_hook(void *hook_data, void *call_data)
-{
-  ControlFlowData *control_flow_data = (ControlFlowData*) hook_data;
-  Drawing_t *drawing = control_flow_data->drawing;
-  ProcessList *process_list = control_flow_data->process_list;
-
-  const TimeWindowNotifyData *time_window_nofify_data = 
-                          ((const TimeWindowNotifyData *)call_data);
-
-  TimeWindow *old_time_window = 
-    time_window_nofify_data->old_time_window;
-  TimeWindow *new_time_window = 
-    time_window_nofify_data->new_time_window;
-  
-  /* Update the ruler */
-  drawing_update_ruler(control_flow_data->drawing,
-                       new_time_window);
-
-
-  /* Two cases : zoom in/out or scrolling */
-  
-  /* In order to make sure we can reuse the old drawing, the scale must
-   * be the same and the new time interval being partly located in the
-   * currently shown time interval. (reuse is only for scrolling)
-   */
-
-  g_info("Old time window HOOK : %lu, %lu to %lu, %lu",
-      old_time_window->start_time.tv_sec,
-      old_time_window->start_time.tv_nsec,
-      old_time_window->time_width.tv_sec,
-      old_time_window->time_width.tv_nsec);
-
-  g_info("New time window HOOK : %lu, %lu to %lu, %lu",
-      new_time_window->start_time.tv_sec,
-      new_time_window->start_time.tv_nsec,
-      new_time_window->time_width.tv_sec,
-      new_time_window->time_width.tv_nsec);
-
-  if( new_time_window->time_width.tv_sec == old_time_window->time_width.tv_sec
-  && new_time_window->time_width.tv_nsec == old_time_window->time_width.tv_nsec)
-  {
-    /* Same scale (scrolling) */
-    g_info("scrolling");
-    LttTime *ns = &new_time_window->start_time;
-    LttTime *nw = &new_time_window->time_width;
-    LttTime *os = &old_time_window->start_time;
-    LttTime *ow = &old_time_window->time_width;
-    LttTime old_end = old_time_window->end_time;
-    LttTime new_end = new_time_window->end_time;
-    //if(ns<os+w<ns+w)
-    //if(ns<os+w && os+w<ns+w)
-    //if(ns<old_end && os<ns)
-    if(ltt_time_compare(*ns, old_end) == -1
-        && ltt_time_compare(*os, *ns) == -1)
-    {
-      g_info("scrolling near right");
-      /* Scroll right, keep right part of the screen */
-      guint x = 0;
-      guint width = control_flow_data->drawing->width;
-      convert_time_to_pixels(
-          *old_time_window,
-          *ns,
-          width,
-          &x);
-
-      /* Copy old data to new location */
-      copy_pixmap_region(process_list,
-                  NULL,
-                  control_flow_data->drawing->drawing_area->style->black_gc,
-                  NULL,
-                  x, 0,
-                  0, 0,
-                  control_flow_data->drawing->width-x+SAFETY, -1);
-
-      if(drawing->damage_begin == drawing->damage_end)
-        drawing->damage_begin = control_flow_data->drawing->width-x;
-      else
-        drawing->damage_begin = 0;
-
-      drawing->damage_end = control_flow_data->drawing->width;
-
-      /* Clear the data request background, but not SAFETY */
-      rectangle_pixmap(process_list,
-          control_flow_data->drawing->drawing_area->style->black_gc,
-          TRUE,
-          drawing->damage_begin+SAFETY, 0,
-          drawing->damage_end - drawing->damage_begin,  // do not overlap
-          -1);
-      gtk_widget_queue_draw(drawing->drawing_area);
-      //gtk_widget_queue_draw_area (drawing->drawing_area,
-      //                          0,0,
-      //                          control_flow_data->drawing->width,
-      //                          control_flow_data->drawing->height);
-
-      /* Get new data for the rest. */
-      drawing_data_request(control_flow_data->drawing,
-          drawing->damage_begin, 0,
-          drawing->damage_end - drawing->damage_begin,
-          control_flow_data->drawing->height);
-    } else { 
-      //if(ns<os<ns+w)
-      //if(ns<os && os<ns+w)
-      //if(ns<os && os<new_end)
-      if(ltt_time_compare(*ns,*os) == -1
-          && ltt_time_compare(*os,new_end) == -1)
-      {
-        g_info("scrolling near left");
-        /* Scroll left, keep left part of the screen */
-        guint x = 0;
-        guint width = control_flow_data->drawing->width;
-        convert_time_to_pixels(
-            *new_time_window,
-            *os,
-            width,
-            &x);
-        
-        /* Copy old data to new location */
-        copy_pixmap_region  (process_list,
-            NULL,
-            control_flow_data->drawing->drawing_area->style->black_gc,
-            NULL,
-            0, 0,
-            x, 0,
-            -1, -1);
-  
-        if(drawing->damage_begin == drawing->damage_end)
-          drawing->damage_end = x;
-        else
-          drawing->damage_end = 
-            control_flow_data->drawing->width;
-
-        drawing->damage_begin = 0;
-        
-        rectangle_pixmap (process_list,
-          control_flow_data->drawing->drawing_area->style->black_gc,
-          TRUE,
-          drawing->damage_begin, 0,
-          drawing->damage_end - drawing->damage_begin,  // do not overlap
-          -1);
-
-        gtk_widget_queue_draw(drawing->drawing_area);
-        //gtk_widget_queue_draw_area (drawing->drawing_area,
-        //                        0,0,
-        //                        control_flow_data->drawing->width,
-        //                        control_flow_data->drawing->height);
-
-
-        /* Get new data for the rest. */
-        drawing_data_request(control_flow_data->drawing,
-            drawing->damage_begin, 0,
-            drawing->damage_end - drawing->damage_begin,
-            control_flow_data->drawing->height);
-    
-      } else {
-        if(ltt_time_compare(*ns,*os) == 0)
-        {
-          g_info("not scrolling");
-        } else {
-          g_info("scrolling far");
-          /* Cannot reuse any part of the screen : far jump */
-          
-          
-          rectangle_pixmap (process_list,
-            control_flow_data->drawing->drawing_area->style->black_gc,
-            TRUE,
-            0, 0,
-            control_flow_data->drawing->width+SAFETY, // do not overlap
-            -1);
-
-          //gtk_widget_queue_draw_area (drawing->drawing_area,
-          //                      0,0,
-          //                      control_flow_data->drawing->width,
-          //                      control_flow_data->drawing->height);
-          gtk_widget_queue_draw(drawing->drawing_area);
-
-          drawing->damage_begin = 0;
-          drawing->damage_end = control_flow_data->drawing->width;
-
-          drawing_data_request(control_flow_data->drawing,
-              0, 0,
-              control_flow_data->drawing->width,
-              control_flow_data->drawing->height);
-      
-        }
-      }
-    }
-  } else {
-    /* Different scale (zoom) */
-    g_info("zoom");
-
-    rectangle_pixmap (process_list,
-          control_flow_data->drawing->drawing_area->style->black_gc,
-          TRUE,
-          0, 0,
-          control_flow_data->drawing->width+SAFETY, // do not overlap
-          -1);
-
-    //gtk_widget_queue_draw_area (drawing->drawing_area,
-    //                            0,0,
-    //                            control_flow_data->drawing->width,
-    //                            control_flow_data->drawing->height);
-    gtk_widget_queue_draw(drawing->drawing_area);
-  
-    drawing->damage_begin = 0;
-    drawing->damage_end = control_flow_data->drawing->width;
-
-    drawing_data_request(control_flow_data->drawing,
-        0, 0,
-        control_flow_data->drawing->width,
-        control_flow_data->drawing->height);
-  }
-
-  /* Update directly when scrolling */
-  gdk_window_process_updates(control_flow_data->drawing->drawing_area->window,
-      TRUE);
-
-  return 0;
-}
-
-gint traceset_notify(void *hook_data, void *call_data)
-{
-  ControlFlowData *control_flow_data = (ControlFlowData*) hook_data;
-  Drawing_t *drawing = control_flow_data->drawing;
-
-  if(unlikely(drawing->gc == NULL)) {
-    return FALSE;
-  }
-  if(drawing->dotted_gc == NULL) {
-    return FALSE;
-  }
-
-  drawing_clear(control_flow_data->drawing);
-  processlist_clear(control_flow_data->process_list);
-  gtk_widget_set_size_request(
-      control_flow_data->drawing->drawing_area,
-                -1, processlist_get_height(control_flow_data->process_list));
-  redraw_notify(control_flow_data, NULL);
-
-  request_background_data(control_flow_data);
-  return FALSE;
-}
-
-gint redraw_notify(void *hook_data, void *call_data)
-{
-  ControlFlowData *control_flow_data = (ControlFlowData*) hook_data;
-  Drawing_t *drawing = control_flow_data->drawing;
-  GtkWidget *widget = drawing->drawing_area;
-
-  drawing->damage_begin = 0;
-  drawing->damage_end = drawing->width;
-
-  /* fun feature, to be separated someday... */
-  drawing_clear(control_flow_data->drawing);
-  processlist_clear(control_flow_data->process_list);
-  gtk_widget_set_size_request(
-      control_flow_data->drawing->drawing_area,
-                -1, processlist_get_height(control_flow_data->process_list));
-  // Clear the images
-  rectangle_pixmap (control_flow_data->process_list,
-        widget->style->black_gc,
-        TRUE,
-        0, 0,
-        drawing->alloc_width,
-        -1);
-
-  gtk_widget_queue_draw(drawing->drawing_area);
-  
-  if(drawing->damage_begin < drawing->damage_end)
-  {
-    drawing_data_request(drawing,
-                         drawing->damage_begin,
-                         0,
-                         drawing->damage_end-drawing->damage_begin,
-                         drawing->height);
-  }
-
-  //gtk_widget_queue_draw_area(drawing->drawing_area,
-  //                           0,0,
-  //                           drawing->width,
-  //                           drawing->height);
-  return FALSE;
-
-}
-
-
-gint continue_notify(void *hook_data, void *call_data)
-{
-  ControlFlowData *control_flow_data = (ControlFlowData*) hook_data;
-  Drawing_t *drawing = control_flow_data->drawing;
-
-  //g_assert(widget->allocation.width == drawing->damage_end);
-
-  if(drawing->damage_begin < drawing->damage_end)
-  {
-    drawing_data_request(drawing,
-                         drawing->damage_begin,
-                         0,
-                         drawing->damage_end-drawing->damage_begin,
-                         drawing->height);
-  }
-
-  return FALSE;
-}
-
-
-gint update_current_time_hook(void *hook_data, void *call_data)
-{
-  ControlFlowData *control_flow_data = (ControlFlowData*)hook_data;
-  Drawing_t *drawing = control_flow_data->drawing;
-
-  LttTime current_time = *((LttTime*)call_data);
-  
-  TimeWindow time_window =
-            lttvwindow_get_time_window(control_flow_data->tab);
-  
-  LttTime time_begin = time_window.start_time;
-  LttTime width = time_window.time_width;
-  LttTime half_width;
-  {
-    guint64 time_ll = ltt_time_to_uint64(width);
-    time_ll = time_ll >> 1; /* divide by two */
-    half_width = ltt_time_from_uint64(time_ll);
-  }
-  LttTime time_end = ltt_time_add(time_begin, width);
-
-  LttvTracesetContext * tsc =
-        lttvwindow_get_traceset_context(control_flow_data->tab);
-  
-  LttTime trace_start = tsc->time_span.start_time;
-  LttTime trace_end = tsc->time_span.end_time;
-  
-  g_info("New current time HOOK : %lu, %lu", current_time.tv_sec,
-              current_time.tv_nsec);
-
-
-  
-  /* If current time is inside time interval, just move the highlight
-   * bar */
-
-  /* Else, we have to change the time interval. We have to tell it
-   * to the main window. */
-  /* The time interval change will take care of placing the current
-   * time at the center of the visible area, or nearest possible if we are
-   * at one end of the trace. */
-  
-  
-  if(ltt_time_compare(current_time, time_begin) < 0)
-  {
-    TimeWindow new_time_window;
-
-    if(ltt_time_compare(current_time,
-          ltt_time_add(trace_start,half_width)) < 0)
-      time_begin = trace_start;
-    else
-      time_begin = ltt_time_sub(current_time,half_width);
-  
-    new_time_window.start_time = time_begin;
-    new_time_window.time_width = width;
-    new_time_window.time_width_double = ltt_time_to_double(width);
-    new_time_window.end_time = ltt_time_add(time_begin, width);
-
-    lttvwindow_report_time_window(control_flow_data->tab, new_time_window);
-  }
-  else if(ltt_time_compare(current_time, time_end) > 0)
-  {
-    TimeWindow new_time_window;
-
-    if(ltt_time_compare(current_time, ltt_time_sub(trace_end, half_width)) > 0)
-      time_begin = ltt_time_sub(trace_end,width);
-    else
-      time_begin = ltt_time_sub(current_time,half_width);
-  
-    new_time_window.start_time = time_begin;
-    new_time_window.time_width = width;
-    new_time_window.time_width_double = ltt_time_to_double(width);
-    new_time_window.end_time = ltt_time_add(time_begin, width);
-
-    lttvwindow_report_time_window(control_flow_data->tab, new_time_window);
-    
-  }
-  gtk_widget_queue_draw(control_flow_data->drawing->drawing_area);
-  
-  /* Update directly when scrolling */
-  gdk_window_process_updates(control_flow_data->drawing->drawing_area->window,
-      TRUE);
-                             
-  return 0;
-}
-
-typedef struct _ClosureData {
-  EventsRequest *events_request;
-  LttvTracesetState *tss;
-  LttTime end_time;
-  guint x_end;
-} ClosureData;
-  
-
-void draw_closure(gpointer key, gpointer value, gpointer user_data)
-{
-  ProcessInfo *process_info = (ProcessInfo*)key;
-  HashedProcessData *hashed_process_data = (HashedProcessData*)value;
-  ClosureData *closure_data = (ClosureData*)user_data;
-    
-  EventsRequest *events_request = closure_data->events_request;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracesetState *tss = closure_data->tss;
-  LttvTracesetContext *tsc = (LttvTracesetContext*)tss;
-
-  LttTime evtime = closure_data->end_time;
-
-  gboolean dodraw = TRUE;
-
-  { 
-    /* For the process */
-    /* First, check if the current process is in the state computation
-     * process list. If it is there, that means we must add it right now and
-     * draw items from the beginning of the read for it. If it is not
-     * present, it's a new process and it was not present : it will
-     * be added after the state update.  */
-#ifdef EXTRA_CHECK
-    g_assert(lttv_traceset_number(tsc->ts) > 0);
-#endif //EXTRA_CHECK
-    LttvTraceContext *tc = tsc->traces[process_info->trace_num];
-    LttvTraceState *ts = (LttvTraceState*)tc;
-
-#if 0
-    //FIXME : optimize data structures.
-    LttvTracefileState *tfs;
-    LttvTracefileContext *tfc;
-    guint i;
-    for(i=0;i<tc->tracefiles->len;i++) {
-      tfc = g_array_index(tc->tracefiles, LttvTracefileContext*, i);
-      if(ltt_tracefile_name(tfc->tf) == LTT_NAME_CPU
-          && tfs->cpu == process_info->cpu)
-        break;
-
-    }
-    g_assert(i<tc->tracefiles->len);
-    tfs = LTTV_TRACEFILE_STATE(tfc);
-#endif //0
- //   LttvTracefileState *tfs =
- //    (LttvTracefileState*)tsc->traces[process_info->trace_num]->
- //                        tracefiles[process_info->cpu];
-    LttvProcessState *process;
-    process = lttv_state_find_process(ts, process_info->cpu,
-                                      process_info->pid);
-
-    if(unlikely(process != NULL)) {
-      
-       LttvFilter *filter = control_flow_data->filter;
-       if(filter != NULL && filter->head != NULL)
-         if(!lttv_filter_tree_parse(filter->head,NULL,NULL,
-             tc->t,NULL,process,tc))
-           dodraw = FALSE;
-
-      /* Only draw for processes that are currently in the trace states */
-
-      ProcessList *process_list = control_flow_data->process_list;
-#ifdef EXTRA_CHECK
-      /* Should be alike when background info is ready */
-      if(control_flow_data->background_info_waiting==0)
-        g_assert(ltt_time_compare(process->creation_time,
-                                  process_info->birth) == 0);
-#endif //EXTRA_CHECK
-    
-      /* Now, the process is in the state hash and our own process hash.
-       * We definitely can draw the items related to the ending state.
-       */
-      
-      if(unlikely(ltt_time_compare(hashed_process_data->next_good_time,
-                            evtime) <= 0))
-      {
-        TimeWindow time_window = 
-          lttvwindow_get_time_window(control_flow_data->tab);
-
-#ifdef EXTRA_CHECK
-        if(ltt_time_compare(evtime, time_window.start_time) == -1
-              || ltt_time_compare(evtime, time_window.end_time) == 1)
-                  return;
-#endif //EXTRA_CHECK
-        Drawing_t *drawing = control_flow_data->drawing;
-        guint width = drawing->width;
-
-        guint x = closure_data->x_end;
-
-        DrawContext draw_context;
-
-        /* Now create the drawing context that will be used to draw
-         * items related to the last state. */
-        draw_context.drawable = hashed_process_data->pixmap;
-        draw_context.gc = drawing->gc;
-        draw_context.pango_layout = drawing->pango_layout;
-        draw_context.drawinfo.end.x = x;
-
-        draw_context.drawinfo.y.over = 1;
-        draw_context.drawinfo.y.middle = (hashed_process_data->height/2);
-        draw_context.drawinfo.y.under = hashed_process_data->height;
-
-        draw_context.drawinfo.start.offset.over = 0;
-        draw_context.drawinfo.start.offset.middle = 0;
-        draw_context.drawinfo.start.offset.under = 0;
-        draw_context.drawinfo.end.offset.over = 0;
-        draw_context.drawinfo.end.offset.middle = 0;
-        draw_context.drawinfo.end.offset.under = 0;
-#if 0
-        /* Jump over draw if we are at the same x position */
-        if(x == hashed_process_data->x.over)
-        {
-          /* jump */
-        } else {
-          draw_context.drawinfo.start.x = hashed_process_data->x.over;
-          /* Draw the line */
-          PropertiesLine prop_line = prepare_execmode_line(process);
-          draw_line((void*)&prop_line, (void*)&draw_context);
-
-          hashed_process_data->x.over = x;
-        }
-#endif //0
-
-        if(unlikely(x == hashed_process_data->x.middle &&
-            hashed_process_data->x.middle_used)) {
-#if 0 /* do not mark closure : not missing information */
-          if(hashed_process_data->x.middle_marked == FALSE) {
-            /* Draw collision indicator */
-            gdk_gc_set_foreground(drawing->gc, &drawing_colors[COL_WHITE]);
-            gdk_draw_point(drawing->pixmap,
-                           drawing->gc,
-                           x,
-                           y+(height/2)-3);
-            hashed_process_data->x.middle_marked = TRUE;
-          }
-#endif //0
-          /* Jump */
-        } else {
-          draw_context.drawinfo.start.x = hashed_process_data->x.middle;
-          /* Draw the line */
-          if(dodraw) {
-                  PropertiesLine prop_line = prepare_s_e_line(process);
-                  draw_line((void*)&prop_line, (void*)&draw_context);
-          }
-
-           /* become the last x position */
-          if(likely(x != hashed_process_data->x.middle)) {
-            hashed_process_data->x.middle = x;
-            /* but don't use the pixel */
-            hashed_process_data->x.middle_used = FALSE;
-
-            /* Calculate the next good time */
-            convert_pixels_to_time(width, x+1, time_window,
-                                  &hashed_process_data->next_good_time);
-          }
-        }
-      }
-    }
-  }
-  return;
-}
-
-int before_chunk(void *hook_data, void *call_data)
-{
-  EventsRequest *events_request = (EventsRequest*)hook_data;
-  LttvTracesetState *tss = (LttvTracesetState*)call_data;
-  ControlFlowData *cfd = (ControlFlowData*)events_request->viewer_data;
-#if 0  
-  /* Desactivate sort */
-  gtk_tree_sortable_set_sort_column_id(
-      GTK_TREE_SORTABLE(cfd->process_list->list_store),
-      TRACE_COLUMN,
-      GTK_SORT_ASCENDING);
-#endif //0
-  drawing_chunk_begin(events_request, tss);
-
-  return 0;
-}
-
-int before_request(void *hook_data, void *call_data)
-{
-  EventsRequest *events_request = (EventsRequest*)hook_data;
-  LttvTracesetState *tss = (LttvTracesetState*)call_data;
-  drawing_data_request_begin(events_request, tss);
-
-  return 0;
-}
-
-
-/*
- * after request is necessary in addition of after chunk in order to draw 
- * lines until the end of the screen. after chunk just draws lines until
- * the last event.
- * 
- * for each process
- *    draw closing line
- *    expose
- */
-int after_request(void *hook_data, void *call_data)
-{
-  EventsRequest *events_request = (EventsRequest*)hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-  LttvTracesetState *tss = (LttvTracesetState*)call_data;
-  
-  ProcessList *process_list = control_flow_data->process_list;
-  LttTime end_time = events_request->end_time;
-
-  ClosureData closure_data;
-  closure_data.events_request = (EventsRequest*)hook_data;
-  closure_data.tss = tss;
-  closure_data.end_time = end_time;
-
-  TimeWindow time_window = 
-          lttvwindow_get_time_window(control_flow_data->tab);
-  guint width = control_flow_data->drawing->width;
-  convert_time_to_pixels(
-            time_window,
-            end_time,
-            width,
-            &closure_data.x_end);
-
-
-  /* Draw last items */
-  g_hash_table_foreach(process_list->process_hash, draw_closure,
-                        (void*)&closure_data);
-  
-
-  /* Request expose */
-  drawing_request_expose(events_request, tss, end_time);
-  return 0;
-}
-
-/*
- * for each process
- *    draw closing line
- * expose
- */
-int after_chunk(void *hook_data, void *call_data)
-{
-  EventsRequest *events_request = (EventsRequest*)hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-  LttvTracesetState *tss = (LttvTracesetState*)call_data;
-  LttvTracesetContext *tsc = (LttvTracesetContext*)call_data;
-  LttvTracefileContext *tfc = lttv_traceset_context_get_current_tfc(tsc);
-  LttTime end_time;
-  
-  ProcessList *process_list = control_flow_data->process_list;
-  guint i;
-  LttvTraceset *traceset = tsc->ts;
-  guint nb_trace = lttv_traceset_number(traceset);
-
-  /* Only execute when called for the first trace's events request */
-  if(!process_list->current_hash_data) return;
-
-  for(i = 0 ; i < nb_trace ; i++) {
-    g_free(process_list->current_hash_data[i]);
-  }
-  g_free(process_list->current_hash_data);
-  process_list->current_hash_data = NULL;
-
-  if(tfc != NULL)
-    end_time = LTT_TIME_MIN(tfc->timestamp, events_request->end_time);
-  else /* end of traceset, or position now out of request : end */
-    end_time = events_request->end_time;
-  
-  ClosureData closure_data;
-  closure_data.events_request = (EventsRequest*)hook_data;
-  closure_data.tss = tss;
-  closure_data.end_time = end_time;
-
-  TimeWindow time_window = 
-          lttvwindow_get_time_window(control_flow_data->tab);
-  guint width = control_flow_data->drawing->width;
-  convert_time_to_pixels(
-            time_window,
-            end_time,
-            width,
-            &closure_data.x_end);
-
-  /* Draw last items */
-  g_hash_table_foreach(process_list->process_hash, draw_closure,
-                        (void*)&closure_data);
-#if 0
-  /* Reactivate sort */
-  gtk_tree_sortable_set_sort_column_id(
-      GTK_TREE_SORTABLE(control_flow_data->process_list->list_store),
-      GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
-      GTK_SORT_ASCENDING);
-
-  update_index_to_pixmap(control_flow_data->process_list);
-  /* Request a full expose : drawing scrambled */
-  gtk_widget_queue_draw(control_flow_data->drawing->drawing_area);
-#endif //0
-  /* Request expose (updates damages zone also) */
-  drawing_request_expose(events_request, tss, end_time);
-
-  return 0;
-}
-
-/* after_statedump_end
- * 
- * @param hook_data ControlFlowData structure of the viewer. 
- * @param call_data Event context.
- *
- * This function adds items to be drawn in a queue for each process.
- * 
- */
-int before_statedump_end(void *hook_data, void *call_data)
-{
-  LttvTraceHook *th = (LttvTraceHook*)hook_data;
-  EventsRequest *events_request = (EventsRequest*)th->hook_data;
-  ControlFlowData *control_flow_data = events_request->viewer_data;
-
-  LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
-
-  LttvTracefileState *tfs = (LttvTracefileState *)call_data;
-
-  LttvTraceState *ts = (LttvTraceState *)tfc->t_context;
-
-  LttvTracesetState *tss = (LttvTracesetState*)tfc->t_context->ts_context;
-  ProcessList *process_list = control_flow_data->process_list;
-
-  LttEvent *e;
-  e = ltt_tracefile_get_event(tfc->tf);
-
-  LttvFilter *filter = control_flow_data->filter;
-  if(filter != NULL && filter->head != NULL)
-    if(!lttv_filter_tree_parse(filter->head,e,tfc->tf,
-          tfc->t_context->t,tfc,NULL,NULL))
-      return FALSE;
-
-  LttTime evtime = ltt_event_time(e);
-
-  ClosureData closure_data;
-  closure_data.events_request = events_request;
-  closure_data.tss = tss;
-  closure_data.end_time = evtime;
-
-  TimeWindow time_window = 
-          lttvwindow_get_time_window(control_flow_data->tab);
-  guint width = control_flow_data->drawing->width;
-  convert_time_to_pixels(
-            time_window,
-            evtime,
-            width,
-            &closure_data.x_end);
-
-  /* Draw last items */
-  g_hash_table_foreach(process_list->process_hash, draw_closure,
-                        (void*)&closure_data);
-#if 0
-  /* Reactivate sort */
-  gtk_tree_sortable_set_sort_column_id(
-      GTK_TREE_SORTABLE(control_flow_data->process_list->list_store),
-      GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
-      GTK_SORT_ASCENDING);
-
-  update_index_to_pixmap(control_flow_data->process_list);
-  /* Request a full expose : drawing scrambled */
-  gtk_widget_queue_draw(control_flow_data->drawing->drawing_area);
-#endif //0
-  /* Request expose (updates damages zone also) */
-  drawing_request_expose(events_request, tss, evtime);
-
-  return 0;
-}
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