| 1 | /* User Interface Events. |
| 2 | |
| 3 | Copyright 1999, 2001, 2002 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Cygnus Solutions. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* Work in progress */ |
| 24 | |
| 25 | /* This file was created with the aid of ``gdb-events.sh''. |
| 26 | |
| 27 | The bourn shell script ``gdb-events.sh'' creates the files |
| 28 | ``new-gdb-events.c'' and ``new-gdb-events.h and then compares |
| 29 | them against the existing ``gdb-events.[hc]''. Any differences |
| 30 | found being reported. |
| 31 | |
| 32 | If editing this file, please also run gdb-events.sh and merge any |
| 33 | changes into that script. Conversely, when making sweeping changes |
| 34 | to this file, modifying gdb-events.sh and using its output may |
| 35 | prove easier. */ |
| 36 | |
| 37 | |
| 38 | #include "defs.h" |
| 39 | #include "gdb-events.h" |
| 40 | #include "gdbcmd.h" |
| 41 | |
| 42 | #if WITH_GDB_EVENTS |
| 43 | static struct gdb_events null_event_hooks; |
| 44 | static struct gdb_events queue_event_hooks; |
| 45 | static struct gdb_events *current_event_hooks = &null_event_hooks; |
| 46 | #endif |
| 47 | |
| 48 | int gdb_events_debug; |
| 49 | |
| 50 | #if WITH_GDB_EVENTS |
| 51 | |
| 52 | void |
| 53 | breakpoint_create_event (int b) |
| 54 | { |
| 55 | if (gdb_events_debug) |
| 56 | fprintf_unfiltered (gdb_stdlog, "breakpoint_create_event\n"); |
| 57 | if (!current_event_hooks->breakpoint_create) |
| 58 | return; |
| 59 | current_event_hooks->breakpoint_create (b); |
| 60 | } |
| 61 | |
| 62 | void |
| 63 | breakpoint_delete_event (int b) |
| 64 | { |
| 65 | if (gdb_events_debug) |
| 66 | fprintf_unfiltered (gdb_stdlog, "breakpoint_delete_event\n"); |
| 67 | if (!current_event_hooks->breakpoint_delete) |
| 68 | return; |
| 69 | current_event_hooks->breakpoint_delete (b); |
| 70 | } |
| 71 | |
| 72 | void |
| 73 | breakpoint_modify_event (int b) |
| 74 | { |
| 75 | if (gdb_events_debug) |
| 76 | fprintf_unfiltered (gdb_stdlog, "breakpoint_modify_event\n"); |
| 77 | if (!current_event_hooks->breakpoint_modify) |
| 78 | return; |
| 79 | current_event_hooks->breakpoint_modify (b); |
| 80 | } |
| 81 | |
| 82 | void |
| 83 | tracepoint_create_event (int number) |
| 84 | { |
| 85 | if (gdb_events_debug) |
| 86 | fprintf_unfiltered (gdb_stdlog, "tracepoint_create_event\n"); |
| 87 | if (!current_event_hooks->tracepoint_create) |
| 88 | return; |
| 89 | current_event_hooks->tracepoint_create (number); |
| 90 | } |
| 91 | |
| 92 | void |
| 93 | tracepoint_delete_event (int number) |
| 94 | { |
| 95 | if (gdb_events_debug) |
| 96 | fprintf_unfiltered (gdb_stdlog, "tracepoint_delete_event\n"); |
| 97 | if (!current_event_hooks->tracepoint_delete) |
| 98 | return; |
| 99 | current_event_hooks->tracepoint_delete (number); |
| 100 | } |
| 101 | |
| 102 | void |
| 103 | tracepoint_modify_event (int number) |
| 104 | { |
| 105 | if (gdb_events_debug) |
| 106 | fprintf_unfiltered (gdb_stdlog, "tracepoint_modify_event\n"); |
| 107 | if (!current_event_hooks->tracepoint_modify) |
| 108 | return; |
| 109 | current_event_hooks->tracepoint_modify (number); |
| 110 | } |
| 111 | |
| 112 | void |
| 113 | architecture_changed_event (void) |
| 114 | { |
| 115 | if (gdb_events_debug) |
| 116 | fprintf_unfiltered (gdb_stdlog, "architecture_changed_event\n"); |
| 117 | if (!current_event_hooks->architecture_changed) |
| 118 | return; |
| 119 | current_event_hooks->architecture_changed (); |
| 120 | } |
| 121 | |
| 122 | void |
| 123 | target_changed_event (void) |
| 124 | { |
| 125 | if (gdb_events_debug) |
| 126 | fprintf_unfiltered (gdb_stdlog, "target_changed_event\n"); |
| 127 | if (!current_event_hooks->target_changed) |
| 128 | return; |
| 129 | current_event_hooks->target_changed (); |
| 130 | } |
| 131 | |
| 132 | void |
| 133 | selected_frame_level_changed_event (int level) |
| 134 | { |
| 135 | if (gdb_events_debug) |
| 136 | fprintf_unfiltered (gdb_stdlog, "selected_frame_level_changed_event\n"); |
| 137 | if (!current_event_hooks->selected_frame_level_changed) |
| 138 | return; |
| 139 | current_event_hooks->selected_frame_level_changed (level); |
| 140 | } |
| 141 | |
| 142 | void |
| 143 | selected_thread_changed_event (int thread_num) |
| 144 | { |
| 145 | if (gdb_events_debug) |
| 146 | fprintf_unfiltered (gdb_stdlog, "selected_thread_changed_event\n"); |
| 147 | if (!current_event_hooks->selected_thread_changed) |
| 148 | return; |
| 149 | current_event_hooks->selected_thread_changed (thread_num); |
| 150 | } |
| 151 | |
| 152 | #endif |
| 153 | |
| 154 | #if WITH_GDB_EVENTS |
| 155 | struct gdb_events * |
| 156 | set_gdb_event_hooks (struct gdb_events *vector) |
| 157 | { |
| 158 | struct gdb_events *old_events = current_event_hooks; |
| 159 | if (vector == NULL) |
| 160 | current_event_hooks = &queue_event_hooks; |
| 161 | else |
| 162 | current_event_hooks = vector; |
| 163 | return old_events; |
| 164 | } |
| 165 | #endif |
| 166 | |
| 167 | #if WITH_GDB_EVENTS |
| 168 | void |
| 169 | clear_gdb_event_hooks (void) |
| 170 | { |
| 171 | set_gdb_event_hooks (&null_event_hooks); |
| 172 | } |
| 173 | #endif |
| 174 | |
| 175 | enum gdb_event |
| 176 | { |
| 177 | breakpoint_create, |
| 178 | breakpoint_delete, |
| 179 | breakpoint_modify, |
| 180 | tracepoint_create, |
| 181 | tracepoint_delete, |
| 182 | tracepoint_modify, |
| 183 | architecture_changed, |
| 184 | target_changed, |
| 185 | selected_frame_level_changed, |
| 186 | selected_thread_changed, |
| 187 | nr_gdb_events |
| 188 | }; |
| 189 | |
| 190 | struct breakpoint_create |
| 191 | { |
| 192 | int b; |
| 193 | }; |
| 194 | |
| 195 | struct breakpoint_delete |
| 196 | { |
| 197 | int b; |
| 198 | }; |
| 199 | |
| 200 | struct breakpoint_modify |
| 201 | { |
| 202 | int b; |
| 203 | }; |
| 204 | |
| 205 | struct tracepoint_create |
| 206 | { |
| 207 | int number; |
| 208 | }; |
| 209 | |
| 210 | struct tracepoint_delete |
| 211 | { |
| 212 | int number; |
| 213 | }; |
| 214 | |
| 215 | struct tracepoint_modify |
| 216 | { |
| 217 | int number; |
| 218 | }; |
| 219 | |
| 220 | struct selected_frame_level_changed |
| 221 | { |
| 222 | int level; |
| 223 | }; |
| 224 | |
| 225 | struct selected_thread_changed |
| 226 | { |
| 227 | int thread_num; |
| 228 | }; |
| 229 | |
| 230 | struct event |
| 231 | { |
| 232 | enum gdb_event type; |
| 233 | struct event *next; |
| 234 | union |
| 235 | { |
| 236 | struct breakpoint_create breakpoint_create; |
| 237 | struct breakpoint_delete breakpoint_delete; |
| 238 | struct breakpoint_modify breakpoint_modify; |
| 239 | struct tracepoint_create tracepoint_create; |
| 240 | struct tracepoint_delete tracepoint_delete; |
| 241 | struct tracepoint_modify tracepoint_modify; |
| 242 | struct selected_frame_level_changed selected_frame_level_changed; |
| 243 | struct selected_thread_changed selected_thread_changed; |
| 244 | } |
| 245 | data; |
| 246 | }; |
| 247 | struct event *pending_events; |
| 248 | struct event *delivering_events; |
| 249 | |
| 250 | static void |
| 251 | append (struct event *new_event) |
| 252 | { |
| 253 | struct event **event = &pending_events; |
| 254 | while ((*event) != NULL) |
| 255 | event = &((*event)->next); |
| 256 | (*event) = new_event; |
| 257 | (*event)->next = NULL; |
| 258 | } |
| 259 | |
| 260 | static void |
| 261 | queue_breakpoint_create (int b) |
| 262 | { |
| 263 | struct event *event = XMALLOC (struct event); |
| 264 | event->type = breakpoint_create; |
| 265 | event->data.breakpoint_create.b = b; |
| 266 | append (event); |
| 267 | } |
| 268 | |
| 269 | static void |
| 270 | queue_breakpoint_delete (int b) |
| 271 | { |
| 272 | struct event *event = XMALLOC (struct event); |
| 273 | event->type = breakpoint_delete; |
| 274 | event->data.breakpoint_delete.b = b; |
| 275 | append (event); |
| 276 | } |
| 277 | |
| 278 | static void |
| 279 | queue_breakpoint_modify (int b) |
| 280 | { |
| 281 | struct event *event = XMALLOC (struct event); |
| 282 | event->type = breakpoint_modify; |
| 283 | event->data.breakpoint_modify.b = b; |
| 284 | append (event); |
| 285 | } |
| 286 | |
| 287 | static void |
| 288 | queue_tracepoint_create (int number) |
| 289 | { |
| 290 | struct event *event = XMALLOC (struct event); |
| 291 | event->type = tracepoint_create; |
| 292 | event->data.tracepoint_create.number = number; |
| 293 | append (event); |
| 294 | } |
| 295 | |
| 296 | static void |
| 297 | queue_tracepoint_delete (int number) |
| 298 | { |
| 299 | struct event *event = XMALLOC (struct event); |
| 300 | event->type = tracepoint_delete; |
| 301 | event->data.tracepoint_delete.number = number; |
| 302 | append (event); |
| 303 | } |
| 304 | |
| 305 | static void |
| 306 | queue_tracepoint_modify (int number) |
| 307 | { |
| 308 | struct event *event = XMALLOC (struct event); |
| 309 | event->type = tracepoint_modify; |
| 310 | event->data.tracepoint_modify.number = number; |
| 311 | append (event); |
| 312 | } |
| 313 | |
| 314 | static void |
| 315 | queue_architecture_changed (void) |
| 316 | { |
| 317 | struct event *event = XMALLOC (struct event); |
| 318 | event->type = architecture_changed; |
| 319 | append (event); |
| 320 | } |
| 321 | |
| 322 | static void |
| 323 | queue_target_changed (void) |
| 324 | { |
| 325 | struct event *event = XMALLOC (struct event); |
| 326 | event->type = target_changed; |
| 327 | append (event); |
| 328 | } |
| 329 | |
| 330 | static void |
| 331 | queue_selected_frame_level_changed (int level) |
| 332 | { |
| 333 | struct event *event = XMALLOC (struct event); |
| 334 | event->type = selected_frame_level_changed; |
| 335 | event->data.selected_frame_level_changed.level = level; |
| 336 | append (event); |
| 337 | } |
| 338 | |
| 339 | static void |
| 340 | queue_selected_thread_changed (int thread_num) |
| 341 | { |
| 342 | struct event *event = XMALLOC (struct event); |
| 343 | event->type = selected_thread_changed; |
| 344 | event->data.selected_thread_changed.thread_num = thread_num; |
| 345 | append (event); |
| 346 | } |
| 347 | |
| 348 | void |
| 349 | gdb_events_deliver (struct gdb_events *vector) |
| 350 | { |
| 351 | /* Just zap any events left around from last time. */ |
| 352 | while (delivering_events != NULL) |
| 353 | { |
| 354 | struct event *event = delivering_events; |
| 355 | delivering_events = event->next; |
| 356 | xfree (event); |
| 357 | } |
| 358 | /* Process any pending events. Because one of the deliveries could |
| 359 | bail out we move everything off of the pending queue onto an |
| 360 | in-progress queue where it can, later, be cleaned up if |
| 361 | necessary. */ |
| 362 | delivering_events = pending_events; |
| 363 | pending_events = NULL; |
| 364 | while (delivering_events != NULL) |
| 365 | { |
| 366 | struct event *event = delivering_events; |
| 367 | switch (event->type) |
| 368 | { |
| 369 | case breakpoint_create: |
| 370 | vector->breakpoint_create |
| 371 | (event->data.breakpoint_create.b); |
| 372 | break; |
| 373 | case breakpoint_delete: |
| 374 | vector->breakpoint_delete |
| 375 | (event->data.breakpoint_delete.b); |
| 376 | break; |
| 377 | case breakpoint_modify: |
| 378 | vector->breakpoint_modify |
| 379 | (event->data.breakpoint_modify.b); |
| 380 | break; |
| 381 | case tracepoint_create: |
| 382 | vector->tracepoint_create |
| 383 | (event->data.tracepoint_create.number); |
| 384 | break; |
| 385 | case tracepoint_delete: |
| 386 | vector->tracepoint_delete |
| 387 | (event->data.tracepoint_delete.number); |
| 388 | break; |
| 389 | case tracepoint_modify: |
| 390 | vector->tracepoint_modify |
| 391 | (event->data.tracepoint_modify.number); |
| 392 | break; |
| 393 | case architecture_changed: |
| 394 | vector->architecture_changed (); |
| 395 | break; |
| 396 | case target_changed: |
| 397 | vector->target_changed (); |
| 398 | break; |
| 399 | case selected_frame_level_changed: |
| 400 | vector->selected_frame_level_changed |
| 401 | (event->data.selected_frame_level_changed.level); |
| 402 | break; |
| 403 | case selected_thread_changed: |
| 404 | vector->selected_thread_changed |
| 405 | (event->data.selected_thread_changed.thread_num); |
| 406 | break; |
| 407 | } |
| 408 | delivering_events = event->next; |
| 409 | xfree (event); |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | void _initialize_gdb_events (void); |
| 414 | void |
| 415 | _initialize_gdb_events (void) |
| 416 | { |
| 417 | struct cmd_list_element *c; |
| 418 | #if WITH_GDB_EVENTS |
| 419 | queue_event_hooks.breakpoint_create = queue_breakpoint_create; |
| 420 | queue_event_hooks.breakpoint_delete = queue_breakpoint_delete; |
| 421 | queue_event_hooks.breakpoint_modify = queue_breakpoint_modify; |
| 422 | queue_event_hooks.tracepoint_create = queue_tracepoint_create; |
| 423 | queue_event_hooks.tracepoint_delete = queue_tracepoint_delete; |
| 424 | queue_event_hooks.tracepoint_modify = queue_tracepoint_modify; |
| 425 | queue_event_hooks.architecture_changed = queue_architecture_changed; |
| 426 | queue_event_hooks.target_changed = queue_target_changed; |
| 427 | queue_event_hooks.selected_frame_level_changed = queue_selected_frame_level_changed; |
| 428 | queue_event_hooks.selected_thread_changed = queue_selected_thread_changed; |
| 429 | #endif |
| 430 | |
| 431 | c = add_set_cmd ("eventdebug", class_maintenance, var_zinteger, |
| 432 | (char *) (&gdb_events_debug), "Set event debugging.\n\ |
| 433 | When non-zero, event/notify debugging is enabled.", &setlist); |
| 434 | deprecate_cmd (c, "set debug event"); |
| 435 | deprecate_cmd (add_show_from_set (c, &showlist), "show debug event"); |
| 436 | |
| 437 | add_show_from_set (add_set_cmd ("event", |
| 438 | class_maintenance, |
| 439 | var_zinteger, |
| 440 | (char *) (&gdb_events_debug), |
| 441 | "Set event debugging.\n\ |
| 442 | When non-zero, event/notify debugging is enabled.", &setdebuglist), |
| 443 | &showdebuglist); |
| 444 | } |