diff options
| -rw-r--r-- | apps/app_chanspy.c | 25 | ||||
| -rw-r--r-- | apps/app_mixmonitor.c | 24 | ||||
| -rw-r--r-- | channel.c | 111 | ||||
| -rw-r--r-- | include/asterisk/chanspy.h | 9 |
4 files changed, 90 insertions, 79 deletions
diff --git a/apps/app_chanspy.c b/apps/app_chanspy.c index 450b0a8b1..fe71bbef1 100644 --- a/apps/app_chanspy.c +++ b/apps/app_chanspy.c @@ -207,21 +207,6 @@ static int start_spying(struct ast_channel *chan, struct ast_channel *spychan, s return res; } -static void stop_spying(struct ast_channel *chan, struct ast_channel_spy *spy) -{ - /* If our status has changed to DONE, then the channel we're spying on is gone.... - DON'T TOUCH IT!!! RUN AWAY!!! */ - if (spy->status == CHANSPY_DONE) - return; - - if (!chan) - return; - - ast_mutex_lock(&chan->lock); - ast_channel_spy_remove(chan, spy); - ast_mutex_unlock(&chan->lock); -}; - /* Map 'volume' levels from -4 through +4 into decibel (dB) settings for channel drivers */ @@ -338,7 +323,13 @@ static int channel_spy(struct ast_channel *chan, struct ast_channel *spyee, int } } ast_deactivate_generator(chan); - stop_spying(spyee, &csth.spy); + + if (csth.spy.chan) { + csth.spy.status = CHANSPY_DONE; + ast_mutex_lock(&csth.spy.chan->lock); + ast_channel_spy_remove(csth.spy.chan, &csth.spy); + ast_mutex_unlock(&csth.spy.chan->lock); + } if (option_verbose >= 2) { ast_verbose(VERBOSE_PREFIX_2 "Done Spying on channel %s\n", name); @@ -347,7 +338,7 @@ static int channel_spy(struct ast_channel *chan, struct ast_channel *spyee, int running = 0; } - ast_mutex_destroy(&csth.spy.lock); + ast_channel_spy_free(&csth.spy); return running; } diff --git a/apps/app_mixmonitor.c b/apps/app_mixmonitor.c index fa4716df0..caff40181 100644 --- a/apps/app_mixmonitor.c +++ b/apps/app_mixmonitor.c @@ -109,23 +109,6 @@ AST_APP_OPTIONS(mixmonitor_opts, { AST_APP_OPTION_ARG('W', MUXFLAG_VOLUME, OPT_ARG_VOLUME), }); -static void stopmon(struct ast_channel_spy *spy) -{ - struct ast_channel *chan = spy->chan; - - /* If our status has changed to DONE, then the channel we're spying on is gone.... - DON'T TOUCH IT!!! RUN AWAY!!! */ - if (spy->status == CHANSPY_DONE) - return; - - if (!chan) - return; - - ast_mutex_lock(&chan->lock); - ast_channel_spy_remove(chan, spy); - ast_mutex_unlock(&chan->lock); -} - static int startmon(struct ast_channel *chan, struct ast_channel_spy *spy) { struct ast_channel *peer; @@ -164,9 +147,8 @@ static void *mixmonitor_thread(void *obj) ast_channel_spy_trigger_wait(&mixmonitor->spy); - if (!mixmonitor->spy.chan || mixmonitor->spy.status != CHANSPY_RUNNING) { + if (!mixmonitor->spy.chan || mixmonitor->spy.status != CHANSPY_RUNNING) break; - } while (1) { if (!(f = ast_channel_spy_read_frame(&mixmonitor->spy, SAMPLES_PER_FRAME))) @@ -189,7 +171,7 @@ static void *mixmonitor_thread(void *obj) ast_mutex_unlock(&mixmonitor->spy.lock); - stopmon(&mixmonitor->spy); + ast_channel_spy_free(&mixmonitor->spy); if (option_verbose > 1) ast_verbose(VERBOSE_PREFIX_2 "End MixMonitor Recording %s\n", mixmonitor->name); @@ -199,8 +181,6 @@ static void *mixmonitor_thread(void *obj) ast_verbose(VERBOSE_PREFIX_2 "Executing [%s]\n", mixmonitor->post_process); ast_safe_system(mixmonitor->post_process); } - - ast_mutex_destroy(&mixmonitor->spy.lock); ast_closestream(mixmonitor->fs); @@ -1017,22 +1017,59 @@ int ast_channel_spy_add(struct ast_channel *chan, struct ast_channel_spy *spy) return 0; } +/* Clean up a channel's spy information */ +static void spy_cleanup(struct ast_channel *chan) +{ + if (AST_LIST_EMPTY(&chan->spies->list)) + return; + if (chan->spies->read_translator.path) + ast_translator_free_path(chan->spies->read_translator.path); + if (chan->spies->write_translator.path) + ast_translator_free_path(chan->spies->write_translator.path); + free(chan->spies); + chan->spies = NULL; + return; +} + +/* Detach a spy from it's channel */ +static void spy_detach(struct ast_channel_spy *spy, struct ast_channel *chan) +{ + ast_mutex_lock(&spy->lock); + + /* We only need to poke them if they aren't already done */ + if (spy->status != CHANSPY_DONE) { + spy->status = CHANSPY_STOP; + spy->chan = NULL; + if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) + ast_cond_signal(&spy->trigger); + } + + /* Print it out while we still have a lock so the structure can't go away (if signalled above) */ + ast_log(LOG_DEBUG, "Spy %s removed from channel %s\n", spy->type, chan->name); + + ast_mutex_unlock(&spy->lock); + + return; +} + void ast_channel_spy_stop_by_type(struct ast_channel *chan, const char *type) { - struct ast_channel_spy *spy; + struct ast_channel_spy *spy = NULL; if (!chan->spies) return; - AST_LIST_TRAVERSE(&chan->spies->list, spy, list) { + AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) { ast_mutex_lock(&spy->lock); if ((spy->type == type) && (spy->status == CHANSPY_RUNNING)) { - spy->status = CHANSPY_STOP; - if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) - ast_cond_signal(&spy->trigger); - } - ast_mutex_unlock(&spy->lock); + ast_mutex_unlock(&spy->lock); + AST_LIST_REMOVE_CURRENT(&chan->spies->list, list); + spy_detach(spy, chan); + } else + ast_mutex_unlock(&spy->lock); } + AST_LIST_TRAVERSE_SAFE_END + spy_cleanup(chan); } void ast_channel_spy_trigger_wait(struct ast_channel_spy *spy) @@ -1049,65 +1086,59 @@ void ast_channel_spy_trigger_wait(struct ast_channel_spy *spy) void ast_channel_spy_remove(struct ast_channel *chan, struct ast_channel_spy *spy) { - struct ast_frame *f; - if (!chan->spies) return; AST_LIST_REMOVE(&chan->spies->list, spy, list); - ast_mutex_lock(&spy->lock); + spy_detach(spy, chan); + spy_cleanup(chan); +} - spy->chan = NULL; +void ast_channel_spy_free(struct ast_channel_spy *spy) +{ + struct ast_frame *f = NULL; - for (f = spy->read_queue.head; f; f = spy->read_queue.head) { - spy->read_queue.head = f->next; - ast_frfree(f); - } + if (spy->status == CHANSPY_DONE) + return; + + /* Switch status to done in case we get called twice */ + spy->status = CHANSPY_DONE; + + /* Drop any frames in the queue */ for (f = spy->write_queue.head; f; f = spy->write_queue.head) { spy->write_queue.head = f->next; ast_frfree(f); } + for (f = spy->read_queue.head; f; f= spy->read_queue.head) { + spy->read_queue.head = f->next; + ast_frfree(f); + } + /* Destroy the condition if in use */ if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) ast_cond_destroy(&spy->trigger); - ast_mutex_unlock(&spy->lock); - - ast_log(LOG_DEBUG, "Spy %s removed from channel %s\n", - spy->type, chan->name); + /* Destroy our mutex since it is no longer in use */ + ast_mutex_destroy(&spy->lock); - if (AST_LIST_EMPTY(&chan->spies->list)) { - if (chan->spies->read_translator.path) - ast_translator_free_path(chan->spies->read_translator.path); - if (chan->spies->write_translator.path) - ast_translator_free_path(chan->spies->write_translator.path); - free(chan->spies); - chan->spies = NULL; - } + return; } static void detach_spies(struct ast_channel *chan) { - struct ast_channel_spy *spy; + struct ast_channel_spy *spy = NULL; if (!chan->spies) return; - /* Marking the spies as done is sufficient. Chanspy or spy users will get the picture. */ - AST_LIST_TRAVERSE(&chan->spies->list, spy, list) { - ast_mutex_lock(&spy->lock); - spy->chan = NULL; - if (spy->status == CHANSPY_RUNNING) - spy->status = CHANSPY_DONE; - if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE) - ast_cond_signal(&spy->trigger); - ast_mutex_unlock(&spy->lock); + AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) { + AST_LIST_REMOVE_CURRENT(&chan->spies->list, list); + spy_detach(spy, chan); } + AST_LIST_TRAVERSE_SAFE_END - AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) - ast_channel_spy_remove(chan, spy); - AST_LIST_TRAVERSE_SAFE_END; + spy_cleanup(chan); } /*--- ast_softhangup_nolock: Softly hangup a channel, don't lock */ diff --git a/include/asterisk/chanspy.h b/include/asterisk/chanspy.h index dcdceccf7..c6a64f592 100644 --- a/include/asterisk/chanspy.h +++ b/include/asterisk/chanspy.h @@ -95,6 +95,15 @@ int ast_channel_spy_add(struct ast_channel *chan, struct ast_channel_spy *spy); void ast_channel_spy_remove(struct ast_channel *chan, struct ast_channel_spy *spy); /*! + \brief Free a spy. + \param spy The spy to free + \return nothing + + Note: This function MUST NOT be called with the spy locked. +*/ +void ast_channel_spy_free(struct ast_channel_spy *spy); + +/*! \brief Find all spies of a particular type on a channel and stop them. \param chan The channel to operate on \param type A character string identifying the type of spies to be stopped |