ltt/branches/poly/lttv/modules/gui/controlflow/processlist.h

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Mathieu Desnoyers
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19
  20
  21 #ifndef _PROCESS_LIST_H
  22 #define _PROCESS_LIST_H
  23
  24 #include <gtk/gtk.h>
  25 #include <lttv/state.h>
  26 #include <ltt/ltt.h>
  27
  28 #include "drawitem.h"
  29
  30 /* The process list
  31  *
  32  * Tasks :
  33  * Create a process list
  34  * contains the data for the process list
  35  * tells the height of the process list widget
  36  * provides methods to add/remove process from the list
  37  *  note : the sync with drawing is left to the caller.
  38  * provides helper function to convert a process unique identifier to
  39  *  pixels (in height).
  40  *
  41  * //FIXME : connect the scrolled window adjustment with the list.
  42  */
  43
  44 typedef struct _ProcessInfo {
  45
  46   guint pid;
  47   guint cpu;
  48   guint ppid;
  49   LttTime birth;
  50   guint trace_num;
  51
  52  // gint height_cache;
  53
  54 } ProcessInfo;
  55
  56 typedef struct _HashedProcessData {
  57
  58   GtkTreeIter y_iter; // Access quickly to y pos.
  59  // DrawContext *draw_context;
  60   /* Information on current drawing */
  61   struct {
  62     guint over;
  63     gboolean over_used;    /* inform the user that information is incomplete */
  64     gboolean over_marked;  /* inform the user that information is incomplete */
  65     guint middle;
  66     gboolean middle_used;  /* inform the user that information is incomplete */
  67     gboolean middle_marked;/* inform the user that information is incomplete */
  68     guint under;
  69     gboolean under_used;   /* inform the user that information is incomplete */
  70     gboolean under_marked; /* inform the user that information is incomplete */
  71   } x; /* last x position saved by after state update */
  72
  73   LttTime next_good_time; /* precalculate the next time where the next
  74                              pixel is.*/
  75   // FIXME : add info on last event ?
  76
  77 } HashedProcessData;
  78
  79 struct _ProcessList {
  80
  81   GtkWidget *process_list_widget;
  82   GtkListStore *list_store;
  83   GtkWidget *button; /* one button of the tree view */
  84
  85   /* A hash table by PID to speed up process position find in the list */
  86   GHashTable *process_hash;
  87
  88   guint number_of_process;
  89   gint cell_height_cache;
  90
  91   /* Current process, one per cpu */
  92   HashedProcessData **current_hash_data;
  93
  94 };
  95
  96
  97 typedef struct _ProcessList ProcessList;
  98
  99 ProcessList *processlist_construct(void);
 100 void processlist_destroy(ProcessList *process_list);
 101 GtkWidget *processlist_get_widget(ProcessList *process_list);
 102
 103 void processlist_clear(ProcessList *process_list);
 104
 105 // out : success (0) and height
 106 /* CPU num is only used for PID 0 */
 107 int processlist_add(ProcessList *process_list, guint pid, guint cpu, guint ppid,
 108     LttTime *birth, guint trace_num, const gchar *name, guint *height,
 109     ProcessInfo **process_info,
 110     HashedProcessData **hashed_process_data);
 111 // out : success (0) and height
 112 int processlist_remove(ProcessList *process_list, guint pid, guint cpu,
 113     LttTime *birth, guint trace_num);
 114
 115
 116
 117
 118
 119 static inline gint get_cell_height(ProcessList *process_list,
 120                                    GtkTreeView *tree_view)
 121 {
 122   gint height = process_list->cell_height_cache;
 123   if(height != -1) return height;
 124   else {
 125     GtkTreeViewColumn *Column = gtk_tree_view_get_column(tree_view, 0);
 126
 127     gtk_tree_view_column_cell_get_size(Column, NULL, NULL, NULL, NULL,
 128                                        &process_list->cell_height_cache);
 129   }
 130   return process_list->cell_height_cache;
 131 }
 132
 133
 134
 135 static inline guint processlist_get_height(ProcessList *process_list)
 136 {
 137   return get_cell_height(process_list,
 138                          (GtkTreeView*)process_list->process_list_widget)
 139         * process_list->number_of_process ;
 140 }
 141
 142
 143 static inline HashedProcessData *processlist_get_process_data(
 144           ProcessList *process_list,
 145           guint pid, guint cpu, LttTime *birth, guint trace_num)
 146 {
 147   ProcessInfo process_info;
 148
 149   process_info.pid = pid;
 150   if(pid == 0)
 151     process_info.cpu = cpu;
 152   else
 153     process_info.cpu = 0;
 154   process_info.birth = *birth;
 155   process_info.trace_num = trace_num;
 156
 157   return  (HashedProcessData*)g_hash_table_lookup(
 158                 process_list->process_hash,
 159                 &process_info);
 160 }
 161
 162
 163 static inline gint processlist_get_pixels_from_data(  ProcessList *process_list,
 164           HashedProcessData *hashed_process_data,
 165           guint *y,
 166           guint *height)
 167 {
 168   gint *path_indices;
 169   GtkTreePath *tree_path;
 170
 171   tree_path = gtk_tree_model_get_path((GtkTreeModel*)process_list->list_store,
 172                     &hashed_process_data->y_iter);
 173   path_indices =  gtk_tree_path_get_indices (tree_path);
 174
 175   *height = get_cell_height(process_list,
 176       (GtkTreeView*)process_list->process_list_widget);
 177   *y = *height * path_indices[0];
 178   gtk_tree_path_free(tree_path);
 179
 180   return 0;
 181
 182 }
 183
 184
 185
 186 #endif // _PROCESS_LIST_H