[Asterisk-code-review] app confbridge: Bridge and announcers not removed if confere... (asterisk[15])

[Jenkins2]

Jenkins2 has submitted this change and it was merged. ( https://gerrit.asterisk.org/9028 )

Change subject: app_confbridge: Bridge and announcers not removed if conference ends quickly
......................................................................

app_confbridge: Bridge and announcers not removed if conference ends quickly

If a conference is ended very quickly after it was created (i.e., the
first user immediately hangs up) then the conference bridge and announcer
channels are not removed.

When a conference is created, the push_announcer() function is added to
the playback queue task processor and the conference object reference is
bumped.  If a conference is ended while the push_announcer() function is
still going then the ao2_cleanup(conference) at the end of
push_announcer() will call the destructor function -
destroy_conference_bridge().

The destroy_conference_bridge() function will then add the
hangup_playback() task to the playback queue and will wait for it to end.
Since it is already a current task of the playback queue it will wait
forever.

This patch makes the conference thread call push_announcer() directly.
This way the conference object reference bump is not needed.  Since the
playback queue task processor is only used by the conference thread
itself, there is no danger of trying to play announcements before the
announcer is pushed to the bridge.

ASTERISK-27870 #close

Change-Id: I947a50fb121422d90fd1816d643a54d75185a477
---
M apps/app_confbridge.c
1 file changed, 3 insertions(+), 9 deletions(-)

Approvals:
  Richard Mudgett: Looks good to me, but someone else must approve
  Joshua Colp: Looks good to me, approved
  Jenkins2: Approved for Submit



diff --git a/apps/app_confbridge.c b/apps/app_confbridge.c
index 2bc6014..2f9c632 100644
--- a/apps/app_confbridge.c
+++ b/apps/app_confbridge.c
@@ -1457,25 +1457,19 @@
 /*!
  * \brief Push the announcer channel into the bridge
  *
- * This runs in the playback queue taskprocessor.
- *
- * \param data A confbridge_conference
+ * \param conference Conference bridge to push the announcer to
  * \retval 0 Success
  * \retval -1 Failed to push the channel to the bridge
  */
-static int push_announcer(void *data)
+static int push_announcer(struct confbridge_conference *conference)
 {
-	struct confbridge_conference *conference = data;
-
 	if (conf_announce_channel_push(conference->playback_chan)) {
 		ast_hangup(conference->playback_chan);
 		conference->playback_chan = NULL;
-		ao2_cleanup(conference);
 		return -1;
 	}
 
 	ast_autoservice_start(conference->playback_chan);
-	ao2_cleanup(conference);
 	return 0;
 }
 
@@ -1588,7 +1582,7 @@
 			return NULL;
 		}
 
-		if (ast_taskprocessor_push(conference->playback_queue, push_announcer, ao2_bump(conference))) {
+		if (push_announcer(conference)) {
 			ao2_unlink(conference_bridges, conference);
 			ao2_ref(conference, -1);
 			ao2_unlock(conference_bridges);

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Gerrit-Project: asterisk
Gerrit-Branch: 15
Gerrit-MessageType: merged
Gerrit-Change-Id: I947a50fb121422d90fd1816d643a54d75185a477
Gerrit-Change-Number: 9028
Gerrit-PatchSet: 5
Gerrit-Owner: Robert Mordec <r.mordec at slican.pl>
Gerrit-Reviewer: Jenkins2
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Richard Mudgett <rmudgett at digium.com>
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