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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 11th, 2012, 10:25 a.m., <b>jrose</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2232/diff/2/?file=32328#file32328line857" style="color: black; font-weight: bold; text-decoration: underline;">/branches/10/apps/app_confbridge.c</a>
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(Diff revision 2)
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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"> * </span><span class="cs">XXX</span><span class="cm"> Locking the ast_bridge here is the only way to hold off</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"> * the call to ast_bridge_join() interfering with 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"> * ast_bridge_suspend()/ast_bridge_unsuspend() operations.</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;">Remove XXX since this comment just seems to describe what is being done and isn't a reminder of future work that needs to be done or clarifications that need to be made or anything like that.</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;">The point of the XXX's is that this is technically a bridging API violation. I have given confbridge implementation detail knowledge that the pointer is to an ao2 object.</pre>
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<p style="margin-top: 0;">On December 11th, 2012, 10:25 a.m., <b>jrose</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2232/diff/2/?file=32328#file32328line868" style="color: black; font-weight: bold; text-decoration: underline;">/branches/10/apps/app_confbridge.c</a>
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(Diff revision 2)
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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="n">in_bridge</span> <span class="o">=</span> <span class="o">!</span><span class="n">ast_bridge_suspend</span><span class="p">(</span><span class="n">user</span><span class="o">-></span><span class="n">conference_bridge</span><span class="o">-></span><span class="n">bridge</span><span class="p">,</span> <span class="n">user</span><span class="o">-></span><span class="n">chan</span><span class="p">);</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;">Maybe I'm just naive, but setting a variable to !(some integer) strikes me as a little odd. Why not simply set it to ast_bridge_suspend and then use
if (!in_bridge) {
Actually since what we are looking for is a failure, we could also just do it this way:
change variable name to res
...
res = ast_bridge_suspend(...
...
if (res) {
goto bailout_label
}
ast_bridge_unsuspend(...)
bailout_label:
ao2_unlock(...)</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;">The in_bridge name would be incorrect if I just did
in_bridge = ast_bridge_suspend()
The name should then be not_in_bridge.
Then the code would be
if (!not_in_bridge)
I try to avoid the use of goto if there is a better way. :) Also what you are suggesting here would not start/stop MOH if the bridge channel was not in a bridge yet.</pre>
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<p>- rmudgett</p>
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<p>On December 7th, 2012, 9:37 a.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. 7, 2012, 9:37 a.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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<div style="margin-top: 1.5em;">
<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">(377376)</span></li>
<li>/branches/10/apps/confbridge/conf_state.c <span style="color: grey">(377376)</span></li>
<li>/branches/10/apps/confbridge/conf_state_multi_marked.c <span style="color: grey">(377376)</span></li>
<li>/branches/10/apps/confbridge/include/confbridge.h <span style="color: grey">(377376)</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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