9c312311 |
1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2003-2004 Michel Dagenais |
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 | |
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19 | |
3d218f2a |
20 | #include <lttv/hook.h> |
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21 | |
22 | |
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23 | typedef struct _LttvHookClosure { |
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24 | LttvHook hook; |
25 | void *hook_data; |
26 | LttvHookPrio prio; |
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27 | } LttvHookClosure; |
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28 | |
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29 | gint lttv_hooks_prio_compare(LttvHookClosure *a, LttvHookClosure *b) |
30 | { |
31 | if(a->prio < b->prio) return -1; |
32 | if(a->prio > b->prio) return 1; |
33 | return 0; |
34 | } |
35 | |
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36 | |
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37 | LttvHooks *lttv_hooks_new() |
38 | { |
39 | return g_array_new(FALSE, FALSE, sizeof(LttvHookClosure)); |
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40 | } |
41 | |
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42 | |
43 | void lttv_hooks_destroy(LttvHooks *h) |
44 | { |
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45 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, "lttv_hooks_destroy()"); |
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46 | g_array_free(h, TRUE); |
47 | } |
48 | |
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49 | |
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50 | void lttv_hooks_add(LttvHooks *h, LttvHook f, void *hook_data, LttvHookPrio p) |
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51 | { |
52 | LttvHookClosure c; |
53 | |
54 | if(h == NULL)g_error("Null hook added"); |
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55 | |
56 | c.hook = f; |
57 | c.hook_data = hook_data; |
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58 | c.prio = p; |
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59 | g_array_append_val(h,c); |
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60 | g_array_sort(h, (GCompareFunc)lttv_hooks_prio_compare); |
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61 | } |
62 | |
63 | |
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64 | void lttv_hooks_add_list(LttvHooks *h, LttvHooks *list) |
65 | { |
66 | guint i; |
67 | |
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68 | if(list == NULL) return; |
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69 | for(i = 0 ; i < list->len; i++) { |
70 | g_array_append_val(h,g_array_index(list, LttvHookClosure, i)); |
71 | } |
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72 | g_array_sort(h, (GCompareFunc)lttv_hooks_prio_compare); |
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73 | } |
74 | |
75 | |
76 | void *lttv_hooks_remove(LttvHooks *h, LttvHook f) |
77 | { |
78 | unsigned i; |
79 | |
80 | void *hook_data; |
81 | |
82 | LttvHookClosure *c; |
83 | |
84 | for(i = 0 ; i < h->len ; i++) { |
85 | c = &g_array_index(h, LttvHookClosure, i); |
86 | if(c->hook == f) { |
87 | hook_data = c->hook_data; |
88 | lttv_hooks_remove_by_position(h, i); |
89 | return hook_data; |
90 | } |
91 | } |
92 | return NULL; |
93 | } |
94 | |
95 | |
96 | void lttv_hooks_remove_data(LttvHooks *h, LttvHook f, void *hook_data) |
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97 | { |
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98 | unsigned i; |
99 | |
100 | LttvHookClosure *c; |
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101 | |
102 | for(i = 0 ; i < h->len ; i++) { |
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103 | c = &g_array_index(h, LttvHookClosure, i); |
104 | if(c->hook == f && c->hook_data == hook_data) { |
105 | lttv_hooks_remove_by_position(h, i); |
106 | return; |
107 | } |
108 | } |
109 | } |
110 | |
111 | |
112 | void lttv_hooks_remove_list(LttvHooks *h, LttvHooks *list) |
113 | { |
114 | guint i, j; |
115 | |
116 | LttvHookClosure *c, *c_list; |
117 | |
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118 | if(list == NULL) return; |
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119 | for(i = 0, j = 0 ; i < h->len && j < list->len ;) { |
120 | c = &g_array_index(h, LttvHookClosure, i); |
121 | c_list = &g_array_index(list, LttvHookClosure, j); |
122 | if(c->hook == c_list->hook && c->hook_data == c_list->hook_data) { |
123 | lttv_hooks_remove_by_position(h, i); |
124 | j++; |
125 | } |
126 | else i++; |
127 | } |
128 | |
129 | /* Normally the hooks in h are ordered as in list. If this is not the case, |
130 | try harder here. */ |
131 | |
132 | if(j < list->len) { |
133 | for(; j < list->len ; j++) { |
134 | c_list = &g_array_index(list, LttvHookClosure, j); |
135 | lttv_hooks_remove_data(h, c_list->hook, c_list->hook_data); |
136 | } |
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137 | } |
138 | } |
139 | |
140 | |
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141 | unsigned lttv_hooks_number(LttvHooks *h) |
142 | { |
143 | return h->len; |
144 | } |
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145 | |
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146 | |
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147 | void lttv_hooks_get(LttvHooks *h, unsigned i, LttvHook *f, void **hook_data, |
148 | LttvHookPrio *p) |
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149 | { |
150 | LttvHookClosure *c; |
151 | |
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152 | if(i >= h->len) |
153 | { |
154 | *f = NULL; |
155 | *hook_data = NULL; |
156 | *p = 0; |
157 | return; |
158 | } |
159 | |
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160 | c = &g_array_index(h, LttvHookClosure, i); |
161 | *f = c->hook; |
162 | *hook_data = c->hook_data; |
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163 | *p = c->prio; |
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164 | } |
165 | |
166 | |
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167 | void lttv_hooks_remove_by_position(LttvHooks *h, unsigned i) |
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168 | { |
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169 | g_array_remove_index(h, i); |
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170 | } |
171 | |
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172 | gboolean lttv_hooks_call(LttvHooks *h, void *call_data) |
173 | { |
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174 | gboolean ret, sum_ret = FALSE; |
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175 | |
176 | LttvHookClosure *c; |
177 | |
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178 | guint i; |
179 | |
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180 | if(h != NULL) { |
181 | for(i = 0 ; i < h->len ; i++) { |
182 | c = &g_array_index(h, LttvHookClosure, i); |
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183 | ret = c->hook(c->hook_data,call_data); |
184 | sum_ret = sum_ret || ret; |
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185 | } |
186 | } |
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187 | return sum_ret; |
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188 | } |
189 | |
190 | |
191 | gboolean lttv_hooks_call_check(LttvHooks *h, void *call_data) |
192 | { |
193 | LttvHookClosure *c; |
194 | |
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195 | guint i; |
196 | |
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197 | for(i = 0 ; i < h->len ; i++) { |
198 | c = &g_array_index(h, LttvHookClosure, i); |
199 | if(c->hook(c->hook_data,call_data)) return TRUE; |
200 | } |
201 | return FALSE; |
202 | } |
203 | |
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204 | gboolean lttv_hooks_call_merge(LttvHooks *h1, void *call_data1, |
205 | LttvHooks *h2, void *call_data2) |
206 | { |
207 | gboolean ret, sum_ret = FALSE; |
208 | |
209 | LttvHookClosure *c1, *c2; |
210 | |
211 | guint i, j; |
212 | |
213 | if(h1 != NULL && h2 != NULL) { |
214 | for(i = 0, j = 0 ; i < h1->len && j < h2->len ;) { |
215 | c1 = &g_array_index(h1, LttvHookClosure, i); |
216 | c2 = &g_array_index(h2, LttvHookClosure, j); |
217 | if(c1->prio <= c2->prio) { |
218 | ret = c1->hook(c1->hook_data,call_data1); |
219 | sum_ret = sum_ret || ret; |
220 | i++; |
221 | } |
222 | else { |
223 | ret = c2->hook(c2->hook_data,call_data2); |
224 | sum_ret = sum_ret || ret; |
225 | j++; |
226 | } |
227 | } |
228 | /* Finish the last list with hooks left */ |
229 | for(;i < h1->len; i++) { |
230 | c1 = &g_array_index(h1, LttvHookClosure, i); |
231 | ret = c1->hook(c1->hook_data,call_data1); |
232 | sum_ret = sum_ret || ret; |
233 | } |
234 | for(;j < h2->len; j++) { |
235 | c2 = &g_array_index(h2, LttvHookClosure, j); |
236 | ret = c2->hook(c2->hook_data,call_data2); |
237 | sum_ret = sum_ret || ret; |
238 | } |
239 | } |
240 | else if(h1 != NULL && h2 == NULL) { |
241 | for(i = 0 ; i < h1->len ; i++) { |
242 | c1 = &g_array_index(h1, LttvHookClosure, i); |
243 | ret = c1->hook(c1->hook_data,call_data1); |
244 | sum_ret = sum_ret || ret; |
245 | } |
246 | } |
247 | else if(h1 == NULL && h2 != NULL) { |
248 | for(j = 0 ; j < h2->len ; j++) { |
249 | c2 = &g_array_index(h2, LttvHookClosure, j); |
250 | ret = c2->hook(c2->hook_data,call_data2); |
251 | sum_ret = sum_ret || ret; |
252 | } |
253 | } |
254 | |
255 | return sum_ret; |
256 | } |
257 | |
258 | gboolean lttv_hooks_call_check_merge(LttvHooks *h1, void *call_data1, |
259 | LttvHooks *h2, void *call_data2) |
260 | { |
261 | LttvHookClosure *c1, *c2; |
262 | |
263 | guint i, j; |
264 | |
265 | if(h1 != NULL && h2 != NULL) { |
266 | for(i = 0, j = 0 ; i < h1->len && j < h2->len ;) { |
267 | c1 = &g_array_index(h1, LttvHookClosure, i); |
268 | c2 = &g_array_index(h2, LttvHookClosure, j); |
269 | if(c1->prio <= c2->prio) { |
270 | if(c1->hook(c1->hook_data,call_data1)) return TRUE; |
271 | i++; |
272 | } |
273 | else { |
274 | if(c2->hook(c2->hook_data,call_data2)) return TRUE; |
275 | j++; |
276 | } |
277 | } |
278 | /* Finish the last list with hooks left */ |
279 | for(;i < h1->len; i++) { |
280 | c1 = &g_array_index(h1, LttvHookClosure, i); |
281 | if(c1->hook(c1->hook_data,call_data1)) return TRUE; |
282 | } |
283 | for(;j < h2->len; j++) { |
284 | c2 = &g_array_index(h2, LttvHookClosure, j); |
285 | if(c2->hook(c2->hook_data,call_data2)) return TRUE; |
286 | } |
287 | } |
288 | else if(h1 != NULL && h2 == NULL) { |
289 | for(i = 0 ; i < h1->len ; i++) { |
290 | c1 = &g_array_index(h1, LttvHookClosure, i); |
291 | if(c1->hook(c1->hook_data,call_data1)) return TRUE; |
292 | } |
293 | } |
294 | else if(h1 == NULL && h2 != NULL) { |
295 | for(j = 0 ; j < h2->len ; j++) { |
296 | c2 = &g_array_index(h2, LttvHookClosure, j); |
297 | if(c2->hook(c2->hook_data,call_data2)) return TRUE; |
298 | } |
299 | } |
300 | |
301 | return FALSE; |
302 | |
303 | } |
304 | |
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305 | |
306 | LttvHooksById *lttv_hooks_by_id_new() |
307 | { |
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308 | return g_ptr_array_new(); |
309 | } |
310 | |
311 | |
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312 | void lttv_hooks_by_id_destroy(LttvHooksById *h) |
313 | { |
314 | guint i; |
315 | |
316 | for(i = 0 ; i < h->len ; i++) { |
317 | if(h->pdata[i] != NULL) lttv_hooks_destroy((LttvHooks *)(h->pdata[i])); |
318 | } |
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319 | g_ptr_array_free(h, TRUE); |
320 | } |
321 | |
322 | |
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323 | LttvHooks *lttv_hooks_by_id_find(LttvHooksById *h, unsigned id) |
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324 | { |
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325 | if(h->len <= id) g_ptr_array_set_size(h, id + 1); |
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326 | if(h->pdata[id] == NULL) h->pdata[id] = lttv_hooks_new(); |
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327 | return h->pdata[id]; |
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328 | } |
329 | |
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330 | |
331 | unsigned lttv_hooks_by_id_max_id(LttvHooksById *h) |
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332 | { |
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333 | return h->len; |
334 | } |
335 | |
336 | |
337 | LttvHooks *lttv_hooks_by_id_get(LttvHooksById *h, unsigned id) |
338 | { |
339 | if(id < h->len) return h->pdata[id]; |
340 | return NULL; |
341 | } |
342 | |
343 | |
344 | void lttv_hooks_by_id_remove(LttvHooksById *h, unsigned id) |
345 | { |
346 | if(id < h->len && h->pdata[id] != NULL) { |
347 | lttv_hooks_destroy((LttvHooks *)h->pdata[id]); |
348 | h->pdata[id] = NULL; |
349 | } |
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350 | } |
351 | |