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08b1c66e | 1 | |
9c312311 | 2 | /* This file is part of the Linux Trace Toolkit viewer |
3 | * Copyright (C) 2003-2004 Michel Dagenais | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License Version 2 as | |
7 | * published by the Free Software Foundation; | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
17 | * MA 02111-1307, USA. | |
18 | */ | |
19 | ||
eccb5352 | 20 | |
08b1c66e | 21 | /* module.c : Implementation of the module loading/unloading mechanism. */ |
eccb5352 | 22 | |
4e4d11b3 | 23 | #ifdef HAVE_CONFIG_H |
24 | #include <config.h> | |
25 | #endif | |
26 | ||
3d218f2a | 27 | #include <lttv/module.h> |
08b1c66e | 28 | #include <gmodule.h> |
1a9cecae | 29 | #include <stdlib.h> |
08b1c66e | 30 | |
31 | struct _LttvLibrary | |
32 | { | |
90e19f82 AM |
33 | LttvLibraryInfo info; |
34 | GPtrArray *modules; | |
35 | GModule *gm; | |
36 | guint locked_loaded; | |
08b1c66e | 37 | }; |
38 | ||
dc877563 | 39 | |
dc877563 | 40 | struct _LttvModule |
41 | { | |
90e19f82 AM |
42 | LttvModuleInfo info; |
43 | char **prerequisites_names; | |
44 | GPtrArray *prerequisites; | |
dc877563 | 45 | }; |
46 | ||
eccb5352 | 47 | |
08b1c66e | 48 | /* Modules are searched by name. However, a library may be loaded which |
49 | provides a module with the same name as an existing one. A stack of | |
50 | modules is thus maintained for each name. | |
51 | ||
52 | Libraries correspond to glib modules. The g_module function is | |
53 | responsible for loading each library only once. */ | |
54 | ||
55 | static GHashTable *modules_by_name = NULL; | |
eccb5352 | 56 | |
08b1c66e | 57 | static GPtrArray *libraries = NULL; |
eccb5352 | 58 | |
08b1c66e | 59 | static GHashTable *libraries_by_g_module = NULL; |
eccb5352 | 60 | |
08b1c66e | 61 | static GPtrArray *library_paths = NULL; |
dc877563 | 62 | |
08b1c66e | 63 | static gboolean initialized = FALSE; |
dc877563 | 64 | |
08b1c66e | 65 | static gboolean destroyed = TRUE; |
66 | ||
67 | static struct _LttvModuleDescription *builtin_chain = NULL; | |
68 | ||
69 | static struct _LttvModuleDescription *module_chain = NULL; | |
70 | ||
71 | static struct _LttvModuleDescription **module_next = &module_chain; | |
72 | ||
73 | static GQuark lttv_module_error; | |
74 | ||
75 | static void init(); | |
76 | ||
00e74b69 | 77 | static void finish_destroy(); |
08b1c66e | 78 | |
79 | static void module_release(LttvModule *m); | |
80 | ||
81 | ||
82 | static LttvLibrary *library_add(char *name, char *path, GModule *gm) | |
dc877563 | 83 | { |
90e19f82 AM |
84 | LttvLibrary *l; |
85 | ||
86 | LttvModule *m; | |
87 | ||
88 | struct _LttvModuleDescription *link; | |
89 | ||
90 | GPtrArray *modules; | |
91 | ||
92 | l = g_new(LttvLibrary, 1); | |
93 | l->modules = g_ptr_array_new(); | |
94 | l->gm = gm; | |
95 | l->locked_loaded = 0; | |
96 | l->info.name = g_strdup(name); | |
97 | l->info.path = g_strdup(path); | |
98 | l->info.load_count = 0; | |
99 | ||
100 | g_ptr_array_add(libraries, l); | |
101 | g_hash_table_insert(libraries_by_g_module, gm, l); | |
102 | ||
103 | *module_next = NULL; | |
104 | for(link = module_chain; link != NULL; link = link->next) { | |
105 | m = g_new(LttvModule, 1); | |
106 | g_ptr_array_add(l->modules, m); | |
107 | ||
108 | modules = g_hash_table_lookup(modules_by_name, link->name); | |
109 | if(modules == NULL) { | |
110 | modules = g_ptr_array_new(); | |
111 | g_hash_table_insert(modules_by_name, g_strdup(link->name), modules); | |
112 | } | |
113 | g_ptr_array_add(modules, m); | |
114 | ||
115 | m->prerequisites_names = link->prerequisites; | |
116 | m->prerequisites = g_ptr_array_new(); | |
117 | m->info.name = link->name; | |
118 | m->info.short_description = link->short_description; | |
119 | m->info.description = link->description; | |
120 | m->info.init = link->init; | |
121 | m->info.destroy = link->destroy; | |
122 | m->info.library = l; | |
123 | m->info.require_count = 0; | |
124 | m->info.use_count = 0; | |
125 | m->info.prerequisites_number = link->prerequisites_number; | |
126 | } | |
127 | return l; | |
eccb5352 | 128 | } |
129 | ||
dc877563 | 130 | |
08b1c66e | 131 | static void library_remove(LttvLibrary *l) |
dc877563 | 132 | { |
90e19f82 | 133 | LttvModule *m; |
08b1c66e | 134 | |
90e19f82 AM |
135 | GPtrArray *modules; |
136 | GPtrArray **modules_ptr = &modules; /* for strict aliasing */ | |
137 | guint i; | |
08b1c66e | 138 | |
90e19f82 AM |
139 | char *key; |
140 | char **key_ptr = &key; /* for strict aliasing */ | |
08b1c66e | 141 | |
90e19f82 AM |
142 | for(i = 0 ; i < l->modules->len ; i++) { |
143 | m = (LttvModule *)(l->modules->pdata[i]); | |
08b1c66e | 144 | |
90e19f82 | 145 | g_hash_table_lookup_extended(modules_by_name, m->info.name, |
00e74b69 | 146 | (gpointer *)key_ptr, (gpointer *)modules_ptr); |
90e19f82 AM |
147 | g_assert(modules != NULL); |
148 | g_ptr_array_remove(modules, m); | |
149 | if(modules->len == 0) { | |
150 | g_hash_table_remove(modules_by_name, m->info.name); | |
151 | g_ptr_array_free(modules, TRUE); | |
152 | g_free(key); | |
153 | } | |
154 | ||
155 | g_ptr_array_free(m->prerequisites, TRUE); | |
156 | g_free(m); | |
157 | } | |
158 | ||
159 | g_ptr_array_remove(libraries, l); | |
160 | g_hash_table_remove(libraries_by_g_module, l->gm); | |
161 | g_ptr_array_free(l->modules, TRUE); | |
162 | g_free(l->info.name); | |
163 | g_free(l->info.path); | |
164 | g_free(l); | |
eccb5352 | 165 | } |
166 | ||
167 | ||
08b1c66e | 168 | static LttvLibrary *library_load(char *name, GError **error) |
dc877563 | 169 | { |
90e19f82 | 170 | GModule *gm = NULL; |
eccb5352 | 171 | |
90e19f82 | 172 | int i, nb; |
08b1c66e | 173 | |
90e19f82 AM |
174 | /* path is always initialized, checked */ |
175 | char *path = NULL, *pathname; | |
08b1c66e | 176 | |
90e19f82 | 177 | LttvLibrary *l; |
eccb5352 | 178 | |
90e19f82 | 179 | GString *messages = g_string_new(""); |
eccb5352 | 180 | |
90e19f82 | 181 | /* insure that module.c is initialized */ |
ffd54a90 | 182 | |
90e19f82 | 183 | init(); |
eccb5352 | 184 | |
90e19f82 | 185 | /* Try to find the library along all the user specified paths */ |
b445142a | 186 | |
90e19f82 AM |
187 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Load library %s", name); |
188 | nb = lttv_library_path_number(); | |
189 | for(i = 0 ; i <= nb ; i++) { | |
190 | if(i < nb) path = lttv_library_path_get(i); | |
191 | else path = NULL; | |
eccb5352 | 192 | |
90e19f82 AM |
193 | pathname = g_module_build_path(path ,name); |
194 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Try path %s", pathname); | |
195 | module_chain = NULL; | |
196 | module_next = &module_chain; | |
197 | gm = g_module_open(pathname,0); | |
198 | g_free(pathname); | |
dc877563 | 199 | |
90e19f82 | 200 | if(gm != NULL) break; |
eccb5352 | 201 | |
90e19f82 AM |
202 | messages = g_string_append(messages, g_module_error()); |
203 | messages = g_string_append(messages, "\n"); | |
204 | g_log(G_LOG_DOMAIN,G_LOG_LEVEL_INFO,"Trial failed, %s", g_module_error()); | |
205 | } | |
08b1c66e | 206 | |
90e19f82 | 207 | /* Module cannot be found */ |
08b1c66e | 208 | |
90e19f82 AM |
209 | if(gm == NULL) { |
210 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Failed to load %s", name); | |
211 | g_set_error(error, lttv_module_error, LTTV_MODULE_NOT_FOUND, | |
212 | "Cannot load library %s: %s", name, messages->str); | |
213 | g_string_free(messages, TRUE); | |
214 | return NULL; | |
215 | } | |
216 | g_string_free(messages, TRUE); | |
08b1c66e | 217 | |
90e19f82 | 218 | /* Check if the library was already loaded */ |
dc877563 | 219 | |
90e19f82 | 220 | l = g_hash_table_lookup(libraries_by_g_module, gm); |
dc877563 | 221 | |
90e19f82 AM |
222 | /* This library was not already loaded */ |
223 | ||
224 | if(l == NULL) { | |
225 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Library %s (%s) loaded", name, | |
226 | g_module_name(gm)); | |
227 | l = library_add(name, path, gm); | |
228 | } | |
229 | return l; | |
08b1c66e | 230 | } |
eccb5352 | 231 | |
eccb5352 | 232 | |
08b1c66e | 233 | LttvLibrary *lttv_library_load(char *name, GError **error) |
234 | { | |
90e19f82 AM |
235 | LttvLibrary *l = library_load(name, error); |
236 | if(l != NULL) l->info.load_count++; | |
237 | return l; | |
08b1c66e | 238 | } |
eccb5352 | 239 | |
0bd2f89c | 240 | /* Returns < 0 if still in use, 0 if freed */ |
241 | static gint library_unload(LttvLibrary *l) | |
08b1c66e | 242 | { |
90e19f82 | 243 | guint i; |
08b1c66e | 244 | |
90e19f82 | 245 | GModule *gm; |
08b1c66e | 246 | |
90e19f82 | 247 | LttvModule *m; |
08b1c66e | 248 | |
90e19f82 AM |
249 | if(l->locked_loaded > 0) { |
250 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Unload library %s: locked loaded", | |
251 | l->info.name); | |
252 | return 1; | |
253 | } | |
08b1c66e | 254 | |
90e19f82 AM |
255 | if(l->info.load_count > 0) { |
256 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Unload library %s: load count %d", | |
257 | l->info.name, l->info.load_count); | |
258 | return l->info.load_count; | |
259 | } | |
dc877563 | 260 | |
90e19f82 | 261 | /* Check if all its modules have been released */ |
dc877563 | 262 | |
90e19f82 AM |
263 | for(i = 0 ; i < l->modules->len ; i++) { |
264 | m = (LttvModule *)(l->modules->pdata[i]); | |
265 | if(m->info.use_count > 0) { | |
266 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO,"Unload library %s: module %s used", | |
267 | l->info.name, m->info.name); | |
268 | return 1; | |
269 | } | |
270 | } | |
08b1c66e | 271 | |
90e19f82 AM |
272 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Unload library %s: close the GModule", |
273 | l->info.name); | |
274 | gm = l->gm; | |
275 | library_remove(l); | |
276 | if(gm != NULL) g_module_close(gm); | |
08b1c66e | 277 | |
90e19f82 | 278 | /* insure that module.c will be finalized */ |
08b1c66e | 279 | |
90e19f82 AM |
280 | finish_destroy(); |
281 | return 0; | |
eccb5352 | 282 | } |
283 | ||
eccb5352 | 284 | |
0bd2f89c | 285 | gint lttv_library_unload(LttvLibrary *l) |
dc877563 | 286 | { |
90e19f82 AM |
287 | /* In the case where we wait for a module to release, the load count is 0 |
288 | * and should not be decremented. */ | |
289 | if(l->info.load_count != 0) { | |
290 | l->info.load_count--; | |
291 | return l->info.load_count; | |
292 | } else { | |
293 | library_unload(l); | |
294 | return 0; | |
295 | } | |
dc877563 | 296 | } |
eccb5352 | 297 | |
eccb5352 | 298 | |
08b1c66e | 299 | static void library_lock_loaded(LttvLibrary *l) |
dc877563 | 300 | { |
90e19f82 | 301 | l->locked_loaded++; |
eccb5352 | 302 | } |
303 | ||
304 | ||
0bd2f89c | 305 | static gint library_unlock_loaded(LttvLibrary *l) |
dc877563 | 306 | { |
90e19f82 AM |
307 | l->locked_loaded--; |
308 | return library_unload(l); | |
08b1c66e | 309 | } |
eccb5352 | 310 | |
eccb5352 | 311 | |
08b1c66e | 312 | static LttvModule *module_require(char *name, GError **error) |
313 | { | |
90e19f82 | 314 | GError *tmp_error = NULL; |
eccb5352 | 315 | |
90e19f82 | 316 | guint i, j; |
eccb5352 | 317 | |
90e19f82 | 318 | LttvModule *m, *required; |
08b1c66e | 319 | |
90e19f82 | 320 | LttvLibrary *l = NULL; |
08b1c66e | 321 | |
90e19f82 | 322 | GPtrArray *modules; |
08b1c66e | 323 | |
90e19f82 | 324 | /* Insure that module.c is initialized */ |
08b1c66e | 325 | |
90e19f82 | 326 | init(); |
dbb7bb09 | 327 | |
90e19f82 | 328 | /* Check if the module is already loaded */ |
dbb7bb09 | 329 | |
90e19f82 | 330 | modules = g_hash_table_lookup(modules_by_name, name); |
08b1c66e | 331 | |
90e19f82 | 332 | /* Try to load a library having the module name */ |
08b1c66e | 333 | |
90e19f82 AM |
334 | if(modules == NULL) { |
335 | l = library_load(name, error); | |
336 | if(l == NULL) return NULL; | |
337 | else library_lock_loaded(l); | |
08b1c66e | 338 | |
90e19f82 | 339 | /* A library was found, does it contain the named module */ |
08b1c66e | 340 | |
90e19f82 AM |
341 | modules = g_hash_table_lookup(modules_by_name, name); |
342 | if(modules == NULL) { | |
343 | g_set_error(error, lttv_module_error, LTTV_MODULE_NOT_FOUND, | |
344 | "Module %s not found in library %s", name, l->info.name); | |
345 | library_unlock_loaded(l); | |
346 | return NULL; | |
347 | } | |
348 | } | |
349 | m = (LttvModule *)(modules->pdata[modules->len - 1]); | |
dbb7bb09 | 350 | |
90e19f82 | 351 | /* We have the module */ |
eccb5352 | 352 | |
90e19f82 | 353 | m->info.use_count++; |
eccb5352 | 354 | |
90e19f82 | 355 | /* First use of the module. Initialize after getting the prerequisites */ |
08b1c66e | 356 | |
90e19f82 AM |
357 | if(m->info.use_count == 1) { |
358 | for(i = 0 ; i < m->info.prerequisites_number ; i++) { | |
359 | required = module_require(m->prerequisites_names[i], &tmp_error); | |
08b1c66e | 360 | |
90e19f82 | 361 | /* A prerequisite could not be found, undo everything and fail */ |
08b1c66e | 362 | |
90e19f82 AM |
363 | if(required == NULL) { |
364 | for(j = 0 ; j < m->prerequisites->len ; j++) { | |
365 | module_release((LttvModule *)(m->prerequisites->pdata[j])); | |
366 | } | |
367 | g_ptr_array_set_size(m->prerequisites, 0); | |
368 | if(l != NULL) library_unlock_loaded(l); | |
369 | g_set_error(error, lttv_module_error, LTTV_MODULE_NOT_FOUND, | |
370 | "Cannot find prerequisite for module %s: %s", name, | |
371 | tmp_error->message); | |
372 | g_clear_error(&tmp_error); | |
373 | return NULL; | |
374 | } | |
375 | g_ptr_array_add(m->prerequisites, required); | |
376 | } | |
377 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Module %s: init()", m->info.name); | |
378 | m->info.init(); | |
379 | } | |
eccb5352 | 380 | |
90e19f82 AM |
381 | /* Decrement the load count of the library. It will not really be |
382 | unloaded since it contains a currently used module. */ | |
08b1c66e | 383 | |
90e19f82 | 384 | if(l != NULL) library_unlock_loaded(l); |
dc877563 | 385 | |
90e19f82 | 386 | return(m); |
08b1c66e | 387 | } |
388 | ||
389 | ||
390 | /* The require_count for a module is the number of explicit calls to | |
391 | lttv_module_require, while the use_count also counts the number of times | |
392 | a module is needed as a prerequisite. */ | |
eccb5352 | 393 | |
08b1c66e | 394 | LttvModule *lttv_module_require(char *name, GError **error) |
395 | { | |
90e19f82 AM |
396 | LttvModule *m = module_require(name, error); |
397 | if(m != NULL) m->info.require_count++; | |
398 | return(m); | |
dc877563 | 399 | } |
eccb5352 | 400 | |
eccb5352 | 401 | |
08b1c66e | 402 | static void module_release(LttvModule *m) |
dc877563 | 403 | { |
90e19f82 AM |
404 | guint i; |
405 | ||
406 | library_lock_loaded(m->info.library); | |
407 | ||
408 | m->info.use_count--; | |
409 | if(m->info.use_count == 0) { | |
410 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Module %s: destroy()",m->info.name); | |
411 | m->info.destroy(); | |
412 | for(i = 0 ; i < m->prerequisites->len ; i++) { | |
413 | module_release((LttvModule *)(m->prerequisites->pdata[i])); | |
414 | } | |
415 | g_ptr_array_set_size(m->prerequisites, 0); | |
416 | } | |
417 | library_unlock_loaded(m->info.library); | |
08b1c66e | 418 | } |
419 | ||
420 | ||
421 | void lttv_module_release(LttvModule *m) | |
422 | { | |
90e19f82 AM |
423 | m->info.require_count--; |
424 | module_release(m); | |
08b1c66e | 425 | } |
426 | ||
427 | ||
428 | void lttv_module_info(LttvModule *m, LttvModuleInfo *info) | |
429 | { | |
90e19f82 | 430 | *info = m->info; |
08b1c66e | 431 | } |
432 | ||
433 | ||
434 | unsigned lttv_module_prerequisite_number(LttvModule *m) | |
435 | { | |
90e19f82 | 436 | return m->prerequisites->len; |
08b1c66e | 437 | } |
438 | ||
439 | ||
440 | LttvModule *lttv_module_prerequisite_get(LttvModule *m, unsigned i) | |
441 | { | |
90e19f82 | 442 | return (LttvModule *)(m->prerequisites->pdata[i]); |
08b1c66e | 443 | } |
444 | ||
445 | ||
446 | void lttv_library_info(LttvLibrary *l, LttvLibraryInfo *info) | |
447 | { | |
90e19f82 | 448 | *info = l->info; |
08b1c66e | 449 | } |
450 | ||
451 | ||
452 | unsigned lttv_library_module_number(LttvLibrary *l) | |
453 | { | |
90e19f82 | 454 | return l->modules->len; |
08b1c66e | 455 | } |
456 | ||
457 | ||
458 | LttvModule *lttv_library_module_get(LttvLibrary *l, unsigned i) | |
459 | { | |
90e19f82 | 460 | return (LttvModule *)(l->modules->pdata[i]); |
08b1c66e | 461 | } |
462 | ||
463 | ||
464 | unsigned lttv_library_number() | |
465 | { | |
90e19f82 | 466 | return libraries->len; |
dc877563 | 467 | } |
468 | ||
eccb5352 | 469 | |
08b1c66e | 470 | LttvLibrary *lttv_library_get(unsigned i) |
dc877563 | 471 | { |
90e19f82 | 472 | return (LttvLibrary *)(libraries->pdata[i]); |
eccb5352 | 473 | } |
474 | ||
dc877563 | 475 | |
224446ce | 476 | void lttv_library_path_add(const char *name) |
dc877563 | 477 | { |
90e19f82 AM |
478 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Add library path %s", name); |
479 | g_ptr_array_add(library_paths,(char*)g_strdup(name)); | |
08b1c66e | 480 | } |
481 | ||
dc877563 | 482 | |
224446ce | 483 | void lttv_library_path_remove(const char *name) |
08b1c66e | 484 | { |
90e19f82 AM |
485 | guint i; |
486 | ||
487 | for(i = 0 ; i < library_paths->len ; i++) { | |
488 | if(g_str_equal(name, library_paths->pdata[i])) { | |
489 | g_free(library_paths->pdata[i]); | |
490 | g_ptr_array_remove_index(library_paths,i); | |
491 | return; | |
492 | } | |
493 | } | |
dc877563 | 494 | } |
495 | ||
496 | ||
08b1c66e | 497 | unsigned lttv_library_path_number() |
dc877563 | 498 | { |
90e19f82 | 499 | return library_paths->len; |
08b1c66e | 500 | } |
dc877563 | 501 | |
dc877563 | 502 | |
08b1c66e | 503 | char *lttv_library_path_get(unsigned i) |
504 | { | |
90e19f82 | 505 | return (char *)(library_paths->pdata[library_paths->len - i - 1]); |
dc877563 | 506 | } |
507 | ||
08b1c66e | 508 | |
509 | void lttv_module_register(struct _LttvModuleDescription *d) | |
36b3c068 | 510 | { |
90e19f82 AM |
511 | *module_next = d; |
512 | module_next = &(d->next); | |
36b3c068 | 513 | } |
dc877563 | 514 | |
08b1c66e | 515 | |
516 | static void init() | |
dc877563 | 517 | { |
90e19f82 AM |
518 | if(initialized) return; |
519 | g_assert(destroyed); | |
520 | ||
521 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Init module.c"); | |
522 | ||
523 | initialized = TRUE; | |
524 | destroyed = FALSE; | |
525 | lttv_module_error = g_quark_from_string("LTTV_MODULE_ERROR"); | |
526 | modules_by_name = g_hash_table_new(g_str_hash, g_str_equal); | |
527 | libraries = g_ptr_array_new(); | |
528 | libraries_by_g_module = g_hash_table_new(g_direct_hash, g_direct_equal); | |
529 | library_paths = g_ptr_array_new(); | |
530 | ||
531 | if(builtin_chain == NULL) builtin_chain = module_chain; | |
532 | module_chain = builtin_chain; | |
533 | library_add("builtin", NULL, NULL); | |
dc877563 | 534 | } |
535 | ||
536 | ||
00e74b69 | 537 | static void finish_destroy() |
dc877563 | 538 | { |
90e19f82 AM |
539 | guint i; |
540 | ||
541 | if(initialized) return; | |
542 | g_assert(!destroyed); | |
543 | ||
544 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Finish destroy module.c"); | |
545 | g_hash_table_destroy(modules_by_name); | |
546 | g_ptr_array_free(libraries, TRUE); | |
547 | g_hash_table_destroy(libraries_by_g_module); | |
548 | for(i = 0 ; i < library_paths->len ; i++) { | |
549 | g_free(library_paths->pdata[i]); | |
550 | } | |
551 | g_ptr_array_free(library_paths, TRUE); | |
552 | destroyed = TRUE; | |
08b1c66e | 553 | } |
554 | ||
555 | ||
556 | static void destroy() | |
90e19f82 AM |
557 | { |
558 | guint i, j, nb; | |
08b1c66e | 559 | |
90e19f82 | 560 | LttvLibrary *l, **locked_libraries; |
08b1c66e | 561 | |
90e19f82 | 562 | LttvModule *m; |
dc877563 | 563 | |
90e19f82 | 564 | g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "Destroy module.c"); |
08b1c66e | 565 | |
90e19f82 | 566 | /* Unload all libraries */ |
dc877563 | 567 | |
90e19f82 AM |
568 | nb = libraries->len; |
569 | locked_libraries = g_new(LttvLibrary *, nb); | |
dc877563 | 570 | |
90e19f82 AM |
571 | for(i = 0 ; i < nb ; i++) { |
572 | //g_assert(nb == libraries->len); | |
573 | l = (LttvLibrary *)(libraries->pdata[i]); | |
574 | locked_libraries[i] = l; | |
575 | library_lock_loaded(l); | |
576 | for(j = 0 ; j < l->modules->len ; j++) { | |
577 | m = (LttvModule *)(l->modules->pdata[j]); | |
578 | while(m->info.require_count > 0) lttv_module_release(m); | |
579 | } | |
580 | if(library_unlock_loaded(l) > 0) | |
581 | while(lttv_library_unload(l) > 0); | |
f8a12990 | 582 | |
90e19f82 AM |
583 | /* If the number of librairies loaded have changed, restart from the |
584 | * beginning */ | |
585 | if(nb != libraries->len) { | |
586 | i = 0; | |
587 | nb = libraries->len; | |
588 | } | |
f8a12990 | 589 | |
90e19f82 | 590 | } |
08b1c66e | 591 | |
90e19f82 AM |
592 | for(i = 0 ; i < nb ; i++) { |
593 | l = locked_libraries[i]; | |
594 | library_unlock_loaded(l); | |
595 | } | |
596 | g_free(locked_libraries); | |
08b1c66e | 597 | |
90e19f82 | 598 | /* The library containing module.c may be locked by our caller */ |
08b1c66e | 599 | |
90e19f82 | 600 | g_assert(libraries->len <= 1); |
08b1c66e | 601 | |
90e19f82 | 602 | initialized = FALSE; |
7d1b1f00 | 603 | |
90e19f82 | 604 | exit(0); |
eccb5352 | 605 | } |
08b1c66e | 606 | |
90e19f82 AM |
607 | LTTV_MODULE("module", "Modules in libraries", \ |
608 | "Load libraries, list, require and initialize contained modules", \ | |
609 | init, destroy) | |
08b1c66e | 610 |