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 <gdk/gdk.h>
  26 #include <lttv/state.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  */
  42
  43
  44 /* Enumeration of the columns */
  45 enum
  46 {
  47   PROCESS_COLUMN,
  48   PID_COLUMN,
  49   TGID_COLUMN,
  50   PPID_COLUMN,
  51   CPU_COLUMN,
  52   BIRTH_S_COLUMN,
  53   BIRTH_NS_COLUMN,
  54   TRACE_COLUMN,
  55   N_COLUMNS
  56 };
  57
  58
  59 typedef struct _ProcessInfo {
  60
  61   guint pid;
  62   guint tgid;
  63   guint cpu;
  64   guint ppid;
  65   LttTime birth;
  66   guint trace_num;
  67
  68  // gint height_cache;
  69
  70 } ProcessInfo;
  71
  72 typedef struct _HashedProcessData {
  73
  74   GdkPixmap *pixmap;  // Pixmap slice containing drawing buffer for the PID
  75   gint height; // height of the pixmap
  76   GtkTreeIter y_iter; // Access quickly to y pos.
  77  // DrawContext *draw_context;
  78   /* Information on current drawing */
  79   struct {
  80     guint over;
  81     gboolean over_used;    /* inform the user that information is incomplete */
  82     gboolean over_marked;  /* inform the user that information is incomplete */
  83     guint middle;
  84     gboolean middle_used;  /* inform the user that information is incomplete */
  85     gboolean middle_marked;/* inform the user that information is incomplete */
  86     guint under;
  87     gboolean under_used;   /* inform the user that information is incomplete */
  88     gboolean under_marked; /* inform the user that information is incomplete */
  89   } x; /* last x position saved by after state update */
  90
  91   LttTime next_good_time; /* precalculate the next time where the next
  92                              pixel is.*/
  93
  94 } HashedProcessData;
  95
  96 struct _ProcessList {
  97
  98   GtkWidget *process_list_widget;
  99   GtkListStore *list_store;
 100   GtkWidget *button; /* one button of the tree view */
 101   GtkCellRenderer *renderer;
 102
 103   /* A hash table by PID to speed up process position find in the list */
 104   GHashTable *process_hash;
 105
 106   guint number_of_process;
 107   gint cell_height;
 108
 109   /* Current process pointer, one per cpu, one per trace */
 110   HashedProcessData ***current_hash_data;
 111
 112   /* Array containing index -> pixmap correspondance. Must be updated
 113    * every time the process list is reordered, process added or removed */
 114   GPtrArray * index_to_pixmap;
 115
 116 };
 117
 118
 119 typedef struct _ProcessList ProcessList;
 120
 121
 122 #ifndef TYPE_DRAWING_T_DEFINED
 123 #define TYPE_DRAWING_T_DEFINED
 124 typedef struct _Drawing_t Drawing_t;
 125 #endif //TYPE_DRAWING_T_DEFINED
 126
 127 ProcessList *processlist_construct(void);
 128 void processlist_destroy(ProcessList *process_list);
 129 GtkWidget *processlist_get_widget(ProcessList *process_list);
 130
 131 void processlist_clear(ProcessList *process_list);
 132
 133 // out : success (0) and height
 134 /* CPU num is only used for PID 0 */
 135 int processlist_add(ProcessList *process_list, Drawing_t * drawing,
 136     guint pid, guint tgid, guint cpu, guint ppid,
 137     LttTime *birth, guint trace_num, GQuark name, guint *height,
 138     ProcessInfo **process_info,
 139     HashedProcessData **hashed_process_data);
 140 // out : success (0) and height
 141 int processlist_remove(ProcessList *process_list, guint pid, guint cpu,
 142     LttTime *birth, guint trace_num);
 143
 144 /* Set the name of a process */
 145 void processlist_set_name(ProcessList *process_list,
 146     GQuark name,
 147     HashedProcessData *hashed_process_data);
 148
 149 /* Set the ppid of a process */
 150 void processlist_set_tgid(ProcessList *process_list,
 151     guint tgid,
 152     HashedProcessData *hashed_process_data);
 153 void processlist_set_ppid(ProcessList *process_list,
 154     guint ppid,
 155     HashedProcessData *hashed_process_data);
 156
 157
 158 /* Synchronize the list at the left and the drawing */
 159 void update_index_to_pixmap(ProcessList *process_list);
 160
 161 /* Update the width of each pixmap buffer for each process */
 162 void update_pixmap_size(ProcessList *process_list, guint width);
 163
 164
 165 /* Put src and/or dest to NULL to copy from/to the each PID specific pixmap */
 166 void copy_pixmap_region(ProcessList *process_list, GdkDrawable *dest,
 167     GdkGC *gc, GdkDrawable *src,
 168     gint xsrc, gint ysrc,
 169     gint xdest, gint ydest, gint width, gint height);
 170
 171 /* If height is -1, the height of each pixmap is used */
 172 void rectangle_pixmap(ProcessList *process_list, GdkGC *gc,
 173     gboolean filled, gint x, gint y, gint width, gint height);
 174
 175 /* Renders each pixmaps into on big drawable */
 176 void copy_pixmap_to_screen(ProcessList *process_list,
 177     GdkDrawable *dest,
 178     GdkGC *gc,
 179     gint x, gint y,
 180     gint width, gint height);
 181
 182
 183 static inline gint get_cell_height(GtkTreeView *TreeView)
 184 {
 185   gint height;
 186   GtkTreeViewColumn *column = gtk_tree_view_get_column(TreeView, 0);
 187
 188   gtk_tree_view_column_cell_get_size(column, NULL, NULL, NULL, NULL, &height);
 189
 190   gint vertical_separator;
 191   gtk_widget_style_get (GTK_WIDGET (TreeView),
 192       "vertical-separator", &vertical_separator,
 193       NULL);
 194   height += vertical_separator;
 195
 196   return height;
 197 }
 198
 199 static inline guint processlist_get_height(ProcessList *process_list)
 200 {
 201   return process_list->cell_height * process_list->number_of_process ;
 202 }
 203
 204
 205 static inline HashedProcessData *processlist_get_process_data(
 206           ProcessList *process_list,
 207           guint pid, guint cpu, LttTime *birth, guint trace_num)
 208 {
 209   ProcessInfo process_info;
 210
 211   process_info.pid = pid;
 212   if(pid == 0)
 213     process_info.cpu = cpu;
 214   else
 215     process_info.cpu = ANY_CPU;
 216   process_info.birth = *birth;
 217   process_info.trace_num = trace_num;
 218
 219   return  (HashedProcessData*)g_hash_table_lookup(
 220                 process_list->process_hash,
 221                 &process_info);
 222 }
 223
 224
 225 static inline gint processlist_get_pixels_from_data(  ProcessList *process_list,
 226           HashedProcessData *hashed_process_data,
 227           guint *y,
 228           guint *height)
 229 {
 230   gint *path_indices;
 231   GtkTreePath *tree_path;
 232
 233   tree_path = gtk_tree_model_get_path((GtkTreeModel*)process_list->list_store,
 234                     &hashed_process_data->y_iter);
 235   path_indices =  gtk_tree_path_get_indices (tree_path);
 236
 237   *height = get_cell_height((GtkTreeView*)process_list->process_list_widget);
 238   *y = *height * path_indices[0];
 239   gtk_tree_path_free(tree_path);
 240
 241   return 0;
 242
 243 }
 244
 245 static inline guint processlist_get_index_from_data(ProcessList *process_list,
 246           HashedProcessData *hashed_process_data)
 247 {
 248   gint *path_indices;
 249   GtkTreePath *tree_path;
 250   guint ret;
 251
 252   tree_path = gtk_tree_model_get_path((GtkTreeModel*)process_list->list_store,
 253                     &hashed_process_data->y_iter);
 254   path_indices =  gtk_tree_path_get_indices (tree_path);
 255
 256   ret = path_indices[0];
 257
 258   gtk_tree_path_free(tree_path);
 259
 260   return ret;
 261 }
 262
 263
 264
 265 #endif // _PROCESS_LIST_H