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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2232/">https://reviewboard.asterisk.org/r/2232/</a>
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<p style="margin-top: 0;">On December 12th, 2012, 11:53 a.m., <b>Mark Michelson</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2232/diff/3/?file=32368#file32368line857" style="color: black; font-weight: bold; text-decoration: underline;">/branches/10/apps/app_confbridge.c</a>
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(Diff revision 3)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void conf_moh_stop(struct conference_bridge_user *user)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="cm">/*</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * Locking the ast_bridge here is the only way to hold off the</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * call to ast_bridge_join() in confbridge_exec() from</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * interfering with the bridge and MOH operations here.</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> */</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Would it be possible to just lock the user->conference_bridge here and add a lock around the ast_bridge_join() call in confbridge_exec()?</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">ast_bridge_join is blocking so it would never be unlocked until it returned</pre>
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<p>- jcolp</p>
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<p>On December 11th, 2012, 1:17 p.m., rmudgett wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By rmudgett.</div>
<p style="color: grey;"><i>Updated Dec. 11, 2012, 1:17 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">When two users enter a new conference simultaneously, one of the callers hears MOH.
* Created a confbridge internal MOH API to eliminate the inlined MOH handling code.
Note that the conference mixing bridge needs to be locked when actually starting/stopping MOH because there is a small window between the conference join unsuspend MOH and actually joining the mixing bridge. Doing the lock this way may be a violation of the bridging API. I don't see an alternative though. See the comment in the conf_moh_start()/conf_moh_stop() functions.
* Created the concept of suspended MOH so it can be interrupted while conference join announcements and DTMF features can operate.
* Suspend any MOH until the user actually joins the bridge of the conference. This way any pre-join file playback does not need to worry about MOH.
* Made post-join actions only play deferred entry announcement files. Changing the user/conference state during that time is not protected or controlled by the state machine.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Simultaneous entry to a new conference does not have one of the users still hearing MOH.
Simultaneous entry of the following user types:
unmarked - unmarked -> MOH is no longer played to the first user who "entered"
waitmarked - marked -> MOH is no longer played to the waitmarked user who "entered" first.
unmarked - waitmarked -> MOH is played to both users since the conference has not started.</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-20606">ASTERISK-20606</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/10/apps/app_confbridge.c <span style="color: grey">(377802)</span></li>
<li>/branches/10/apps/confbridge/conf_state.c <span style="color: grey">(377802)</span></li>
<li>/branches/10/apps/confbridge/conf_state_multi_marked.c <span style="color: grey">(377802)</span></li>
<li>/branches/10/apps/confbridge/include/confbridge.h <span style="color: grey">(377802)</span></li>
<li>/branches/10/include/asterisk/bridging.h <span style="color: grey">(377802)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2232/diff/" style="margin-left: 3em;">View Diff</a></p>
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