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104c1213 | 1 | /* User Interface Events. |
cea35b08 | 2 | Copyright 1999, 2001 Free Software Foundation, Inc. |
104c1213 JM |
3 | |
4 | Contributed by Cygnus Solutions. | |
5 | ||
afbfc876 | 6 | This file is part of GDB. |
104c1213 | 7 | |
afbfc876 AC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
104c1213 | 12 | |
afbfc876 AC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
104c1213 | 17 | |
afbfc876 AC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
104c1213 JM |
21 | |
22 | /* Work in progress */ | |
23 | ||
24 | /* This file was created with the aid of ``gdb-events.sh''. | |
25 | ||
26 | The bourn shell script ``gdb-events.sh'' creates the files | |
27 | ``new-gdb-events.c'' and ``new-gdb-events.h and then compares | |
28 | them against the existing ``gdb-events.[hc]''. Any differences | |
29 | found being reported. | |
30 | ||
31 | If editing this file, please also run gdb-events.sh and merge any | |
32 | changes into that script. Conversely, when making sweeping changes | |
33 | to this file, modifying gdb-events.sh and using its output may | |
34 | prove easier. */ | |
35 | ||
36 | ||
37 | #include "defs.h" | |
38 | #include "gdb-events.h" | |
39 | #include "gdbcmd.h" | |
40 | ||
41 | #undef XMALLOC | |
42 | #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE))) | |
43 | ||
44 | #if WITH_GDB_EVENTS | |
45 | static struct gdb_events null_event_hooks; | |
46 | static struct gdb_events queue_event_hooks; | |
47 | static struct gdb_events *current_event_hooks = &null_event_hooks; | |
48 | #endif | |
49 | ||
50 | int gdb_events_debug; | |
51 | ||
52 | #if WITH_GDB_EVENTS | |
53 | ||
54 | void | |
55 | breakpoint_create_event (int b) | |
56 | { | |
57 | if (gdb_events_debug) | |
58 | fprintf_unfiltered (gdb_stdlog, "breakpoint_create_event\n"); | |
59 | if (!current_event_hooks->breakpoint_create) | |
60 | return; | |
61 | current_event_hooks->breakpoint_create (b); | |
62 | } | |
63 | ||
64 | void | |
65 | breakpoint_delete_event (int b) | |
66 | { | |
67 | if (gdb_events_debug) | |
68 | fprintf_unfiltered (gdb_stdlog, "breakpoint_delete_event\n"); | |
69 | if (!current_event_hooks->breakpoint_delete) | |
70 | return; | |
71 | current_event_hooks->breakpoint_delete (b); | |
72 | } | |
73 | ||
74 | void | |
75 | breakpoint_modify_event (int b) | |
76 | { | |
77 | if (gdb_events_debug) | |
78 | fprintf_unfiltered (gdb_stdlog, "breakpoint_modify_event\n"); | |
79 | if (!current_event_hooks->breakpoint_modify) | |
80 | return; | |
81 | current_event_hooks->breakpoint_modify (b); | |
82 | } | |
83 | ||
ba9fe036 KS |
84 | void |
85 | tracepoint_create_event (int number) | |
86 | { | |
87 | if (gdb_events_debug) | |
88 | fprintf_unfiltered (gdb_stdlog, "tracepoint_create_event\n"); | |
89 | if (!current_event_hooks->tracepoint_create) | |
90 | return; | |
91 | current_event_hooks->tracepoint_create (number); | |
92 | } | |
93 | ||
94 | void | |
95 | tracepoint_delete_event (int number) | |
96 | { | |
97 | if (gdb_events_debug) | |
98 | fprintf_unfiltered (gdb_stdlog, "tracepoint_delete_event\n"); | |
99 | if (!current_event_hooks->tracepoint_delete) | |
100 | return; | |
101 | current_event_hooks->tracepoint_delete (number); | |
102 | } | |
103 | ||
104 | void | |
105 | tracepoint_modify_event (int number) | |
106 | { | |
107 | if (gdb_events_debug) | |
108 | fprintf_unfiltered (gdb_stdlog, "tracepoint_modify_event\n"); | |
109 | if (!current_event_hooks->tracepoint_modify) | |
110 | return; | |
111 | current_event_hooks->tracepoint_modify (number); | |
112 | } | |
113 | ||
104c1213 JM |
114 | #endif |
115 | ||
116 | #if WITH_GDB_EVENTS | |
ed9a39eb | 117 | struct gdb_events * |
104c1213 JM |
118 | set_gdb_event_hooks (struct gdb_events *vector) |
119 | { | |
ed9a39eb | 120 | struct gdb_events *old_events = current_event_hooks; |
104c1213 JM |
121 | if (vector == NULL) |
122 | current_event_hooks = &queue_event_hooks; | |
123 | else | |
124 | current_event_hooks = vector; | |
ed9a39eb | 125 | return old_events; |
104c1213 JM |
126 | } |
127 | #endif | |
128 | ||
129 | enum gdb_event | |
afbfc876 AC |
130 | { |
131 | breakpoint_create, | |
132 | breakpoint_delete, | |
133 | breakpoint_modify, | |
ba9fe036 KS |
134 | tracepoint_create, |
135 | tracepoint_delete, | |
136 | tracepoint_modify, | |
afbfc876 AC |
137 | nr_gdb_events |
138 | }; | |
104c1213 JM |
139 | |
140 | struct breakpoint_create | |
141 | { | |
142 | int b; | |
143 | }; | |
144 | ||
145 | struct breakpoint_delete | |
146 | { | |
147 | int b; | |
148 | }; | |
149 | ||
150 | struct breakpoint_modify | |
151 | { | |
152 | int b; | |
153 | }; | |
154 | ||
ba9fe036 KS |
155 | struct tracepoint_create |
156 | { | |
157 | int number; | |
158 | }; | |
159 | ||
160 | struct tracepoint_delete | |
161 | { | |
162 | int number; | |
163 | }; | |
164 | ||
165 | struct tracepoint_modify | |
166 | { | |
167 | int number; | |
168 | }; | |
169 | ||
104c1213 JM |
170 | struct event |
171 | { | |
172 | enum gdb_event type; | |
173 | struct event *next; | |
174 | union | |
175 | { | |
afbfc876 AC |
176 | struct breakpoint_create breakpoint_create; |
177 | struct breakpoint_delete breakpoint_delete; | |
178 | struct breakpoint_modify breakpoint_modify; | |
ba9fe036 KS |
179 | struct tracepoint_create tracepoint_create; |
180 | struct tracepoint_delete tracepoint_delete; | |
181 | struct tracepoint_modify tracepoint_modify; | |
104c1213 JM |
182 | } |
183 | data; | |
184 | }; | |
185 | struct event *pending_events; | |
186 | struct event *delivering_events; | |
187 | ||
188 | static void | |
189 | append (struct event *new_event) | |
190 | { | |
191 | struct event **event = &pending_events; | |
192 | while ((*event) != NULL) | |
193 | event = &((*event)->next); | |
194 | (*event) = new_event; | |
195 | (*event)->next = NULL; | |
196 | } | |
197 | ||
198 | static void | |
199 | queue_breakpoint_create (int b) | |
200 | { | |
201 | struct event *event = XMALLOC (struct event); | |
202 | event->type = breakpoint_create; | |
203 | event->data.breakpoint_create.b = b; | |
204 | append (event); | |
205 | } | |
206 | ||
207 | static void | |
208 | queue_breakpoint_delete (int b) | |
209 | { | |
210 | struct event *event = XMALLOC (struct event); | |
211 | event->type = breakpoint_delete; | |
212 | event->data.breakpoint_delete.b = b; | |
213 | append (event); | |
214 | } | |
215 | ||
216 | static void | |
217 | queue_breakpoint_modify (int b) | |
218 | { | |
219 | struct event *event = XMALLOC (struct event); | |
220 | event->type = breakpoint_modify; | |
221 | event->data.breakpoint_modify.b = b; | |
222 | append (event); | |
223 | } | |
224 | ||
ba9fe036 KS |
225 | static void |
226 | queue_tracepoint_create (int number) | |
227 | { | |
228 | struct event *event = XMALLOC (struct event); | |
229 | event->type = tracepoint_create; | |
230 | event->data.tracepoint_create.number = number; | |
231 | append (event); | |
232 | } | |
233 | ||
234 | static void | |
235 | queue_tracepoint_delete (int number) | |
236 | { | |
237 | struct event *event = XMALLOC (struct event); | |
238 | event->type = tracepoint_delete; | |
239 | event->data.tracepoint_delete.number = number; | |
240 | append (event); | |
241 | } | |
242 | ||
243 | static void | |
244 | queue_tracepoint_modify (int number) | |
245 | { | |
246 | struct event *event = XMALLOC (struct event); | |
247 | event->type = tracepoint_modify; | |
248 | event->data.tracepoint_modify.number = number; | |
249 | append (event); | |
250 | } | |
251 | ||
104c1213 JM |
252 | void |
253 | gdb_events_deliver (struct gdb_events *vector) | |
254 | { | |
255 | /* Just zap any events left around from last time. */ | |
256 | while (delivering_events != NULL) | |
257 | { | |
258 | struct event *event = delivering_events; | |
259 | delivering_events = event->next; | |
b8c9b27d | 260 | xfree (event); |
104c1213 JM |
261 | } |
262 | /* Process any pending events. Because one of the deliveries could | |
263 | bail out we move everything off of the pending queue onto an | |
264 | in-progress queue where it can, later, be cleaned up if | |
265 | necessary. */ | |
266 | delivering_events = pending_events; | |
267 | pending_events = NULL; | |
268 | while (delivering_events != NULL) | |
269 | { | |
270 | struct event *event = delivering_events; | |
271 | switch (event->type) | |
afbfc876 AC |
272 | { |
273 | case breakpoint_create: | |
274 | vector->breakpoint_create | |
275 | (event->data.breakpoint_create.b); | |
276 | break; | |
277 | case breakpoint_delete: | |
278 | vector->breakpoint_delete | |
279 | (event->data.breakpoint_delete.b); | |
280 | break; | |
281 | case breakpoint_modify: | |
282 | vector->breakpoint_modify | |
283 | (event->data.breakpoint_modify.b); | |
284 | break; | |
ba9fe036 KS |
285 | case tracepoint_create: |
286 | vector->tracepoint_create | |
287 | (event->data.tracepoint_create.number); | |
288 | break; | |
289 | case tracepoint_delete: | |
290 | vector->tracepoint_delete | |
291 | (event->data.tracepoint_delete.number); | |
292 | break; | |
293 | case tracepoint_modify: | |
294 | vector->tracepoint_modify | |
295 | (event->data.tracepoint_modify.number); | |
296 | break; | |
afbfc876 | 297 | } |
104c1213 | 298 | delivering_events = event->next; |
b8c9b27d | 299 | xfree (event); |
104c1213 JM |
300 | } |
301 | } | |
302 | ||
303 | void _initialize_gdb_events (void); | |
304 | void | |
305 | _initialize_gdb_events (void) | |
306 | { | |
5d161b24 | 307 | struct cmd_list_element *c; |
104c1213 JM |
308 | #if WITH_GDB_EVENTS |
309 | queue_event_hooks.breakpoint_create = queue_breakpoint_create; | |
310 | queue_event_hooks.breakpoint_delete = queue_breakpoint_delete; | |
311 | queue_event_hooks.breakpoint_modify = queue_breakpoint_modify; | |
ba9fe036 KS |
312 | queue_event_hooks.tracepoint_create = queue_tracepoint_create; |
313 | queue_event_hooks.tracepoint_delete = queue_tracepoint_delete; | |
314 | queue_event_hooks.tracepoint_modify = queue_tracepoint_modify; | |
afbfc876 | 315 | #endif |
5d161b24 | 316 | |
afbfc876 AC |
317 | c = add_set_cmd ("eventdebug", class_maintenance, var_zinteger, |
318 | (char *) (&gdb_events_debug), "Set event debugging.\n\ | |
5d161b24 | 319 | When non-zero, event/notify debugging is enabled.", &setlist); |
afbfc876 AC |
320 | deprecate_cmd (c, "set debug event"); |
321 | deprecate_cmd (add_show_from_set (c, &showlist), "show debug event"); | |
5d161b24 DB |
322 | |
323 | add_show_from_set (add_set_cmd ("event", | |
afbfc876 AC |
324 | class_maintenance, |
325 | var_zinteger, | |
326 | (char *) (&gdb_events_debug), | |
327 | "Set event debugging.\n\ | |
5d161b24 | 328 | When non-zero, event/notify debugging is enabled.", &setdebuglist), |
afbfc876 | 329 | &showdebuglist); |
104c1213 | 330 | } |