4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
33 #include <polyp/xmalloc.h>
35 #include <polypcore/core-subscribe.h>
36 #include <polypcore/log.h>
37 #include <polypcore/core-util.h>
41 #define PA_SYMBOL_INIT "pa__init"
42 #define PA_SYMBOL_DONE "pa__done"
44 #define UNLOAD_POLL_TIME 2
46 static void timeout_callback(pa_mainloop_api *m, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
47 pa_core *c = userdata;
49 assert(c && c->mainloop == m && c->module_auto_unload_event == e);
51 pa_module_unload_unused(c);
53 pa_gettimeofday(&ntv);
54 ntv.tv_sec += UNLOAD_POLL_TIME;
55 m->time_restart(e, &ntv);
58 pa_module* pa_module_load(pa_core *c, const char *name, const char *argument) {
64 if (c->disallow_module_loading)
67 m = pa_xmalloc(sizeof(pa_module));
69 m->name = pa_xstrdup(name);
70 m->argument = pa_xstrdup(argument);
72 if (!(m->dl = lt_dlopenext(name))) {
73 pa_log(__FILE__": Failed to open module \"%s\": %s", name, lt_dlerror());
77 if (!(m->init = (int (*)(pa_core *_c, pa_module*_m)) lt_dlsym(m->dl, PA_SYMBOL_INIT))) {
78 pa_log(__FILE__": Failed to load module \"%s\": symbol \""PA_SYMBOL_INIT"\" not found.", name);
82 if (!(m->done = (void (*)(pa_core *_c, pa_module*_m)) lt_dlsym(m->dl, PA_SYMBOL_DONE))) {
83 pa_log(__FILE__": Failed to load module \"%s\": symbol \""PA_SYMBOL_DONE"\" not found.", name);
91 m->unload_requested = 0;
94 if (m->init(c, m) < 0) {
95 pa_log_error(__FILE__": Failed to load module \"%s\" (argument: \"%s\"): initialization failed.", name, argument ? argument : "");
100 c->modules = pa_idxset_new(NULL, NULL);
102 if (!c->module_auto_unload_event) {
104 pa_gettimeofday(&ntv);
105 ntv.tv_sec += UNLOAD_POLL_TIME;
106 c->module_auto_unload_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, c);
108 assert(c->module_auto_unload_event);
111 r = pa_idxset_put(c->modules, m, &m->index);
112 assert(r >= 0 && m->index != PA_IDXSET_INVALID);
114 pa_log_info(__FILE__": Loaded \"%s\" (index: #%u; argument: \"%s\").", m->name, m->index, m->argument ? m->argument : "");
116 pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_MODULE|PA_SUBSCRIPTION_EVENT_NEW, m->index);
123 pa_xfree(m->argument);
135 static void pa_module_free(pa_module *m) {
136 assert(m && m->done && m->core);
138 if (m->core->disallow_module_loading)
141 pa_log_info(__FILE__": Unloading \"%s\" (index: #%u).", m->name, m->index);
147 pa_log_info(__FILE__": Unloaded \"%s\" (index: #%u).", m->name, m->index);
149 pa_subscription_post(m->core, PA_SUBSCRIPTION_EVENT_MODULE|PA_SUBSCRIPTION_EVENT_REMOVE, m->index);
152 pa_xfree(m->argument);
156 void pa_module_unload(pa_core *c, pa_module *m) {
160 if (!(m = pa_idxset_remove_by_data(c->modules, m, NULL)))
166 void pa_module_unload_by_index(pa_core *c, uint32_t idx) {
168 assert(c && idx != PA_IDXSET_INVALID);
171 if (!(m = pa_idxset_remove_by_index(c->modules, idx)))
177 static void free_callback(void *p, PA_GCC_UNUSED void *userdata) {
183 void pa_module_unload_all(pa_core *c) {
189 pa_idxset_free(c->modules, free_callback, NULL);
192 if (c->module_auto_unload_event) {
193 c->mainloop->time_free(c->module_auto_unload_event);
194 c->module_auto_unload_event = NULL;
197 if (c->module_defer_unload_event) {
198 c->mainloop->defer_free(c->module_defer_unload_event);
199 c->module_defer_unload_event = NULL;
203 static int unused_callback(void *p, PA_GCC_UNUSED uint32_t idx, int *del, void *userdata) {
205 time_t *now = userdata;
206 assert(p && del && now);
208 if (m->n_used == 0 && m->auto_unload && m->last_used_time+m->core->module_idle_time <= *now) {
216 void pa_module_unload_unused(pa_core *c) {
224 pa_idxset_foreach(c->modules, unused_callback, &now);
227 static int unload_callback(void *p, PA_GCC_UNUSED uint32_t idx, int *del, PA_GCC_UNUSED void *userdata) {
231 if (m->unload_requested) {
239 static void defer_cb(pa_mainloop_api*api, pa_defer_event *e, void *userdata) {
240 pa_core *core = userdata;
241 api->defer_enable(e, 0);
246 pa_idxset_foreach(core->modules, unload_callback, NULL);
250 void pa_module_unload_request(pa_module *m) {
253 m->unload_requested = 1;
255 if (!m->core->module_defer_unload_event)
256 m->core->module_defer_unload_event = m->core->mainloop->defer_new(m->core->mainloop, defer_cb, m->core);
258 m->core->mainloop->defer_enable(m->core->module_defer_unload_event, 1);
261 void pa_module_set_used(pa_module*m, int used) {
264 if (m->n_used != used)
265 pa_subscription_post(m->core, PA_SUBSCRIPTION_EVENT_MODULE|PA_SUBSCRIPTION_EVENT_CHANGE, m->index);
267 if (m->n_used != used && used == 0)
268 time(&m->last_used_time);
273 pa_modinfo *pa_module_get_info(pa_module *m) {
276 return pa_modinfo_get_by_handle(m->dl);