| 1 | /* This file is part of the Linux Trace Toolkit viewer |
| 2 | * Copyright (C) 2003-2004 Xiangxiu Yang |
| 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 | This file is what every viewer plugin writer should refer to. |
| 21 | |
| 22 | - streamline the rest. |
| 23 | |
| 24 | A viewer plugin is, before anything, a plugin. It thus has an init and |
| 25 | a destroy function called whenever it is loaded/initialized and |
| 26 | unloaded/destroyed. A viewer depends on lttvwindow and thus uses its init and |
| 27 | destroy functions to register viewer related hooks defined in this file. |
| 28 | |
| 29 | The lifetime of a viewer is as follows. The viewer constructor function is |
| 30 | called each time an instance view is created (one subwindow of this viewer |
| 31 | type is created by the user). Thereafter, the viewer gets hooks called for |
| 32 | different purposes by the window containing it. These hooks are detailed |
| 33 | below. |
| 34 | |
| 35 | show: called initially once the trace, position and time window are known. |
| 36 | Do the drawing or register hooks |
| 37 | process_trace for show: hooks called |
| 38 | show_end: remove the hooks |
| 39 | |
| 40 | background_init: prepare for background computation (comes after show_end). |
| 41 | process_trace for background: done in small chunks in gtk_idle, hooks called. |
| 42 | background_end: remove the hooks and perhaps update the window. |
| 43 | |
| 44 | update: called when the windows is exposed/resized, the time window is changed, |
| 45 | the current time is changed or the traceset is changed (different |
| 46 | traceset or traces added/removed. Redraw or register hooks. |
| 47 | process_trace for update: hooks called |
| 48 | update_end: remove the hooks. |
| 49 | |
| 50 | There may be different versions of update functions for the different cases, |
| 51 | or the type of update may be described in an argument. The expose method |
| 52 | normally provides the exposed region. This should be used to register hooks |
| 53 | to process_traceset but also tell about the time interval for which it is |
| 54 | required. Then, a expose_end will be required to remove the hooks and finish |
| 55 | the display as needed. |
| 56 | |
| 57 | In most cases, the enclosing window knows about updates such as a new trace |
| 58 | added to a traceset, time window updates caused by scrolling and even |
| 59 | expose events. There are a few cases, however, where updates are caused by |
| 60 | actions known by a view instance. For example, clicking in a view may update |
| 61 | the current time; all viewers within the same window must be told about the |
| 62 | new current time to change the currently highlighted time point. A viewer |
| 63 | reports such events by calling report_update on its lttvwindow. The lttvwindow |
| 64 | will thereafter call update for each of its contained viewers. |
| 65 | |
| 66 | |
| 67 | Things that can happen to a viewer: |
| 68 | |
| 69 | update_time_window |
| 70 | update_current_time |
| 71 | update_traceset |
| 72 | update_filter |
| 73 | show_viewer |
| 74 | update_dividor |
| 75 | ?? Reshape, damage as gtk methods ?? |
| 76 | |
| 77 | Things that a viewer can do: |
| 78 | |
| 79 | update_status |
| 80 | lttvwindow_report_time_window |
| 81 | set_current_time |
| 82 | update_traceset -> not actually |
| 83 | update_filter -> not actually |
| 84 | show_viewer -> makes no sense. |
| 85 | set_focused_pane |
| 86 | set_hpane_dividor |
| 87 | */ |
| 88 | |
| 89 | |
| 90 | |
| 91 | |
| 92 | /*! \file viewer.h |
| 93 | * \brief API used by the graphical viewers to interact with their top window. |
| 94 | * |
| 95 | * Main window (gui module) is the place to contain and display viewers. |
| 96 | * Viewers (lttv plugins) interacte with main window through this API and |
| 97 | * events sent by gtk. |
| 98 | * This header file should be included in each graphic module. |
| 99 | * This library is used by graphical modules to interact with the |
| 100 | * tracesetWindow. |
| 101 | * |
| 102 | */ |
| 103 | |
| 104 | #include <gtk/gtk.h> |
| 105 | #include <ltt/ltt.h> |
| 106 | #include <lttv/hook.h> |
| 107 | #include <lttvwindow/common.h> |
| 108 | #include <lttv/stats.h> |
| 109 | //FIXME (not ready yet) #include <lttv/filter.h> |
| 110 | |
| 111 | /** |
| 112 | * Function to register a view constructor so that main window can generate |
| 113 | * a toolbar item for the viewer in order to generate a new instance easily. |
| 114 | * It will be called by init function of the module. |
| 115 | * @param ButtonPixmap image shown on the toolbar item. |
| 116 | * @param tooltip tooltip of the toolbar item. |
| 117 | * @param view_constructor constructor of the viewer. |
| 118 | */ |
| 119 | |
| 120 | void lttvwindow_register_toolbar(char ** pixmap, char *tooltip, lttvwindow_viewer_constructor view_constructor); |
| 121 | |
| 122 | |
| 123 | /** |
| 124 | * Function to unregister the viewer's constructor, release the space |
| 125 | * occupied by pixmap, tooltip and constructor of the viewer. |
| 126 | * It will be called when a module is unloaded. |
| 127 | * @param view_constructor constructor of the viewer which is used as |
| 128 | * a reference to find out where the pixmap and tooltip are. |
| 129 | */ |
| 130 | |
| 131 | void lttvwindow_unregister_toolbar(lttvwindow_viewer_constructor view_constructor); |
| 132 | |
| 133 | |
| 134 | /** |
| 135 | * Function to register a view constructor so that main window can generate |
| 136 | * a menu item for the viewer in order to generate a new instance easily. |
| 137 | * It will be called by init function of the module. |
| 138 | * @param menu_path path of the menu item. |
| 139 | * @param menu_text text of the menu item. |
| 140 | * @param view_constructor constructor of the viewer. |
| 141 | */ |
| 142 | |
| 143 | void lttvwindow_register_menu(char *menu_path, char *menu_text, lttvwindow_viewer_constructor view_constructor); |
| 144 | |
| 145 | |
| 146 | /** |
| 147 | * Function to unregister the viewer's constructor, release the space |
| 148 | * occupied by menu_path, menu_text and constructor of the viewer. |
| 149 | * It will be called when a module is unloaded. |
| 150 | * @param view_constructor constructor of the viewer which is used as |
| 151 | * a reference to find out where the menu_path and menu_text are. |
| 152 | */ |
| 153 | |
| 154 | void lttvwindow_unregister_menu(lttvwindow_viewer_constructor view_constructor); |
| 155 | |
| 156 | |
| 157 | /** |
| 158 | * Function to register a hook function for a viewer to update its |
| 159 | * time interval. |
| 160 | * This register function is typically called by the constructor of the viewer. |
| 161 | * @param hook hook function of the viewer. Takes a TimeInterval* as call_data. |
| 162 | * @param hook_data hook data associated with the hook function. |
| 163 | * @param main_win the main window the viewer belongs to. |
| 164 | */ |
| 165 | |
| 166 | typedef struct _TimeWindowNotifyData { |
| 167 | TimeWindow *new_time_window; |
| 168 | TimeWindow *old_time_window; |
| 169 | } TimeWindowNotifyData; |
| 170 | |
| 171 | void lttvwindow_register_time_window_notify(MainWindow * main_win, |
| 172 | LttvHook hook, gpointer hook_data); |
| 173 | |
| 174 | |
| 175 | /** |
| 176 | * Function to unregister a viewer's hook function which is used to |
| 177 | * set/update the time interval of the viewer. |
| 178 | * This unregister function is typically called by the destructor of the viewer. |
| 179 | * @param hook hook function of the viewer. Takes a TimeInterval as call_data. |
| 180 | * @param hook_data hook data associated with the hook function. |
| 181 | * @param main_win the main window the viewer belongs to. |
| 182 | */ |
| 183 | |
| 184 | void lttvwindow_unregister_time_window_notify(MainWindow * main_win, |
| 185 | LttvHook hook, gpointer hook_data); |
| 186 | |
| 187 | |
| 188 | /** |
| 189 | * Function to register a hook function for a viewer to set/update its |
| 190 | * traceset. |
| 191 | * This register function is typically called by the constructor of the viewer. |
| 192 | * @param hook hook function of the viewer. |
| 193 | * @param hook_data hook data associated with the hook function. |
| 194 | * @param main_win the main window the viewer belongs to. |
| 195 | */ |
| 196 | |
| 197 | void lttvwindow_register_traceset_notify(MainWindow * main_win, |
| 198 | LttvHook hook, gpointer hook_data); |
| 199 | |
| 200 | |
| 201 | /** |
| 202 | * Function to unregister a viewer's hook function which is used to |
| 203 | * set/update the traceset of the viewer. |
| 204 | * @param hook hook function of the viewer. |
| 205 | * @param hook_data hook data associated with the hook function. |
| 206 | * @param main_win the main window the viewer belongs to. |
| 207 | */ |
| 208 | |
| 209 | void lttvwindow_unregister_traceset_notify(MainWindow * main_win, |
| 210 | LttvHook hook, gpointer hook_data); |
| 211 | |
| 212 | |
| 213 | /** |
| 214 | * Function to register a hook function for a viewer to set/update its |
| 215 | * filter. |
| 216 | * This register function is typically called by the constructor of the viewer. |
| 217 | * @param hook hook function of the viewer. |
| 218 | * @param hook_data hook data associated with the hook function. |
| 219 | * @param main_win the main window the viewer belongs to. |
| 220 | */ |
| 221 | |
| 222 | void lttvwindow_register_filter_notify(MainWindow *main_win, |
| 223 | LttvHook hook, gpointer hook_data); |
| 224 | |
| 225 | |
| 226 | /** |
| 227 | * Function to unregister a viewer's hook function which is used to |
| 228 | * set/update the filter of the viewer. |
| 229 | * This unregistration is called by the destructor of the viewer. |
| 230 | * @param hook hook function of the viewer. |
| 231 | * @param hook_data hook data associated with the hook function. |
| 232 | * @param main_win the main window the viewer belongs to. |
| 233 | */ |
| 234 | |
| 235 | void lttvwindow_unregister_filter_notify(LttvHook hook, gpointer hook_data, |
| 236 | MainWindow * main_win); |
| 237 | |
| 238 | |
| 239 | /** |
| 240 | * Function to register a hook function for a viewer to set/update its |
| 241 | * current time. |
| 242 | * @param hook hook function of the viewer. |
| 243 | * @param hook_data hook data associated with the hook function. |
| 244 | * @param main_win the main window the viewer belongs to. |
| 245 | */ |
| 246 | |
| 247 | void lttvwindow_register_current_time_notify(MainWindow *main_win, |
| 248 | LttvHook hook, gpointer hook_data); |
| 249 | |
| 250 | |
| 251 | /** |
| 252 | * Function to unregister a viewer's hook function which is used to |
| 253 | * set/update the current time of the viewer. |
| 254 | * @param hook hook function of the viewer. |
| 255 | * @param hook_data hook data associated with the hook function. |
| 256 | * @param main_win the main window the viewer belongs to. |
| 257 | */ |
| 258 | |
| 259 | void lttvwindow_unregister_current_time_notify(MainWindow * main_win, |
| 260 | LttvHook hook, gpointer hook_data); |
| 261 | |
| 262 | |
| 263 | /** |
| 264 | * Function to register a hook function for a viewer to show |
| 265 | * its content. |
| 266 | * @param hook hook function of the viewer. |
| 267 | * @param hook_data hook data associated with the hook function. |
| 268 | * @param main_win the main window the viewer belongs to. |
| 269 | */ |
| 270 | |
| 271 | void lttvwindow_register_show_notify(MainWindow *main_win, |
| 272 | LttvHook hook, gpointer hook_data); |
| 273 | |
| 274 | |
| 275 | /** |
| 276 | * Function to unregister a viewer's hook function which is used to |
| 277 | * show the content of the viewer. |
| 278 | * @param hook hook function of the viewer. |
| 279 | * @param hook_data hook data associated with the hook function. |
| 280 | * @param main_win the main window the viewer belongs to. |
| 281 | */ |
| 282 | |
| 283 | void lttvwindow_unregister_show_notify(MainWindow * main_win, |
| 284 | LttvHook hook, gpointer hook_data); |
| 285 | |
| 286 | |
| 287 | /** |
| 288 | * Function to register a hook function for a viewer to set/update the |
| 289 | * dividor of the hpane. It provides a way to make the horizontal |
| 290 | * dividors of all the viewers linked together. |
| 291 | * @param hook hook function of the viewer. |
| 292 | * @param hook_data hook data associated with the hook function. |
| 293 | * @param main_win the main window the viewer belongs to. |
| 294 | */ |
| 295 | |
| 296 | void lttvwindow_register_dividor(MainWindow *main_win, |
| 297 | LttvHook hook, gpointer hook_data); |
| 298 | |
| 299 | |
| 300 | /** |
| 301 | * Function to unregister a viewer's hook function which is used to |
| 302 | * set/update hpane's dividor of the viewer. |
| 303 | * @param hook hook function of the viewer. |
| 304 | * @param hook_data hook data associated with the hook function. |
| 305 | * @param main_win the main window the viewer belongs to. |
| 306 | */ |
| 307 | |
| 308 | void lttvwindow_unregister_dividor(MainWindow *main_win, |
| 309 | LttvHook hook, gpointer hook_data); |
| 310 | |
| 311 | |
| 312 | |
| 313 | /** |
| 314 | * Update the status bar whenever something changed in the viewer. |
| 315 | * @param main_win the main window the viewer belongs to. |
| 316 | * @param info the message which will be shown in the status bar. |
| 317 | */ |
| 318 | |
| 319 | void lttvwindow_report_status(MainWindow *main_win, char *info); |
| 320 | |
| 321 | |
| 322 | /** |
| 323 | * Function to set the time interval of the current tab. |
| 324 | * It will be called by a viewer's signal handle associated with |
| 325 | * the move_slider signal |
| 326 | * @param main_win the main window the viewer belongs to. |
| 327 | * @param time_interval a pointer where time interval is stored. |
| 328 | */ |
| 329 | |
| 330 | void lttvwindow_report_time_window(MainWindow *main_win, TimeWindow *time_window); |
| 331 | |
| 332 | /** |
| 333 | * Function to set the current time/event of the current tab. |
| 334 | * It will be called by a viewer's signal handle associated with |
| 335 | * the button-release-event signal |
| 336 | * @param main_win the main window the viewer belongs to. |
| 337 | * @param time a pointer where time is stored. |
| 338 | */ |
| 339 | |
| 340 | void lttvwindow_report_current_time(MainWindow *main_win, LttTime *time); |
| 341 | |
| 342 | |
| 343 | /** |
| 344 | * Function to set the position of the hpane's dividor (viewer). |
| 345 | * It will be called by a viewer's signal handle associated with |
| 346 | * the motion_notify_event event/signal |
| 347 | * @param main_win the main window the viewer belongs to. |
| 348 | * @param position position of the hpane's dividor. |
| 349 | */ |
| 350 | |
| 351 | void lttvwindow_report_dividor(MainWindow *main_win, gint position); |
| 352 | |
| 353 | /** |
| 354 | * Function to set the focused pane (viewer). |
| 355 | * It will be called by a viewer's signal handle associated with |
| 356 | * the grab_focus signal |
| 357 | * @param main_win the main window the viewer belongs to. |
| 358 | * @param paned a pointer to a pane where the viewer is contained. |
| 359 | */ |
| 360 | //FIXME : can we do this through normal GTK signals ? |
| 361 | void lttvwindow_report_focus(MainWindow *main_win, gpointer paned); |
| 362 | |
| 363 | |
| 364 | /** |
| 365 | * Function to request data in a specific time interval to the main window. |
| 366 | * The main window will use this time interval and the others present |
| 367 | * to get the data from the process trace. |
| 368 | * @param main_win the main window the viewer belongs to. |
| 369 | * @param paned a pointer to a pane where the viewer is contained. |
| 370 | */ |
| 371 | |
| 372 | void lttvwindow_time_interval_request(MainWindow *main_win, |
| 373 | TimeWindow time_requested, guint num_events, |
| 374 | LttvHook after_process_traceset, |
| 375 | gpointer after_process_traceset_data); |
| 376 | |
| 377 | /** |
| 378 | * Function to get the life span of the traceset |
| 379 | * @param main_win the main window the viewer belongs to. |
| 380 | * @param start start time of the traceset. |
| 381 | * @param end end time of the traceset. |
| 382 | */ |
| 383 | |
| 384 | const TimeInterval *lttvwindow_get_time_span(MainWindow *main_win); |
| 385 | |
| 386 | /** |
| 387 | * Function to get the current time window of the current tab. |
| 388 | * @param main_win the main window the viewer belongs to. |
| 389 | * @param time_interval a pointer where time interval will be stored. |
| 390 | */ |
| 391 | |
| 392 | const TimeWindow *lttvwindow_get_time_window(MainWindow *main_win); |
| 393 | |
| 394 | |
| 395 | /** |
| 396 | * Function to get the current time/event of the current tab. |
| 397 | * @param main_win the main window the viewer belongs to. |
| 398 | * @param time a pointer where time will be stored. |
| 399 | */ |
| 400 | |
| 401 | const LttTime *lttvwindow_get_current_time(MainWindow *main_win); |
| 402 | |
| 403 | /** |
| 404 | * Function to get the traceset from the current tab. |
| 405 | * @param main_win the main window the viewer belongs to. |
| 406 | * @param traceset a pointer to a traceset. |
| 407 | */ |
| 408 | |
| 409 | const LttvTraceset *lttvwindow_get_traceset(MainWindow *main_win); |
| 410 | |
| 411 | |
| 412 | /** |
| 413 | * Function to get the filter of the current tab. |
| 414 | * @param main_win, the main window the viewer belongs to. |
| 415 | * @param filter, a pointer to a filter. |
| 416 | */ |
| 417 | |
| 418 | //FIXME |
| 419 | typedef void lttv_filter; |
| 420 | //FIXME |
| 421 | const lttv_filter *lttvwindow_get_filter(MainWindow *main_win); |
| 422 | |
| 423 | |
| 424 | /** |
| 425 | * Function to get the stats of the traceset |
| 426 | * It must be non const so the viewer can modify it. //FIXME really ? |
| 427 | * @param main_win the main window the viewer belongs to. |
| 428 | */ |
| 429 | |
| 430 | LttvTracesetStats* lttvwindow_get_traceset_stats(MainWindow *main_win); |
| 431 | |
| 432 | /** |
| 433 | * Function to get the context of the traceset |
| 434 | * It must be non const so the viewer can add and remove hooks from it. |
| 435 | * @param main_win the main window the viewer belongs to. |
| 436 | */ |
| 437 | |
| 438 | |
| 439 | LttvTracesetContext* lttvwindow_get_traceset_context(MainWindow *main_win); |
| 440 | |
| 441 | |