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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1900/">https://reviewboard.asterisk.org/r/1900/</a>
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<p style="margin-top: 0;">On May 21st, 2012, 7:16 p.m., <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1900/diff/3/?file=28208#file28208line2107" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/include/asterisk/channel.h</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void ast_channel_undefer_dtmf(struct ast_channel *chan);</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/*! \return number of <span class="hl">active/allocated </span>channels */</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm">/*! \return number of channels <span class="hl">available for lookup </span>*/</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="kt">int</span> <span class="n">ast_active_channels</span><span class="p">(</span><span class="kt">void</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="kt">int</span> <span class="n">ast_active_channels</span><span class="p">(</span><span class="kt">void</span><span class="p">);</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">/*! \return the number of channels not yet destroyed */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="kt">int</span> <span class="n">ast_undestroyed_channels</span><span class="p">(</span><span class="kt">void</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;">With these calls, we could complain about a potential channel reference leak if they are different on shutdown!</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;">Yes! And someone should totally do that in another patch sometime. :-)</pre>
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<p style="margin-top: 0;">On May 21st, 2012, 7:16 p.m., <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1900/diff/3/?file=28211#file28211line2189" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/channel.c</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static void ast_channel_destructor(void *obj)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ast_atomic_fetchadd_int</span><span class="p">(</span><span class="o">&</span><span class="n">chancount</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</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;">This should be at the end of the destructor.</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;">Ok.</pre>
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<p style="margin-top: 0;">On May 21st, 2012, 7:16 p.m., <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1900/diff/3/?file=28211#file28211line6362" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/channel.c</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static const char *oldest_linkedid(const char *a, const char *b)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n"><span class="hl">ast_strlen_zero</span></span><span class="p"><span class="hl">(</span></span><span class="n">ast_channel_linkedid</span><span class="p">(</span><span class="n">chan</span><span class="p">)<span class="hl">)</span></span><span class="hl"> </span><span class="o"><span class="hl">&&</span></span><span class="hl"> </span><span class="mi"><span class="hl">0</span></span><span class="hl"> </span><span class="o"><span class="hl">!=</span></span><span class="hl"> </span><span class="n">strcmp</span><span class="p">(</span><span class="n">ast_channel_linkedid</span><span class="p">(</span><span class="n">chan</span><span class="p">),</span> <span class="n">linkedid</span><span class="p">))</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">ast_channel_linkedid</span><span class="p">(</span><span class="n">chan</span><span class="p">)</span><span class="hl"> </span><span class="o"><span class="hl">||</span></span><span class="hl"> </span><span class="o"><span class="hl">!</span></span><span class="n">strcmp</span><span class="p">(</span><span class="n">ast_channel_linkedid</span><span class="p">(</span><span class="n">chan</span><span class="p">),</span> <span class="n">linkedid</span><span class="p">))</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;">This should be:
if (ast_channel_linkedid(chan) && !strcmp(...)) {
}</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;">ok.</pre>
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<p style="margin-top: 0;">On May 21st, 2012, 7:16 p.m., <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1900/diff/3/?file=28212#file28212line452" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/channel_internal_api.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void ast_channel_linkedid_set(struct ast_channel *chan, const char *value)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="n">ast_strlen_zero</span><span class="p">(</span><span class="n">value</span><span class="p">))</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;">This test is not needed. String field sets are tolerant of NULL values. They are treated as empty strings.</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;">Stringfields are tolerant of NULLs, but linkedid specifically should *never* be set to an empty string.</pre>
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<p>- Terry</p>
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<p>On May 21st, 2012, 5:57 p.m., Terry Wilson wrote:</p>
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<div>Review request for Asterisk Developers, Mark Michelson and rmudgett.</div>
<div>By Terry Wilson.</div>
<p style="color: grey;"><i>Updated May 21, 2012, 5:57 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;">This patch fixes to situations that could cause the CEL LINKEDID_END event to be missed.
1) During a core stop gracefully, modules are unloaded when ast_active_channels == 0. The LINKDEDID_END event fires during the channel destructor. This means that occasionally, the cel_* module will be unloaded before the channel is destroyed. It seemed generally useful to wait until the refcount of all channel == 0 before unloading, so I added a channel counter and used it in the shutdown code.
2) During a masquerade, ast_channel_change_linkedid is called. It calls ast_cel_check_retire_linkedid which unrefs the linkedid in the linkedids container in cel.c. It didn't ref the new linkedid. Now it does. I also changed the logic a little, since it used to call ast_channel_linkedid_set() even when it hadn't changed (or was blank, which should be verboten).
(this patch is against trunk, but it will go in 1.8+)</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;">My CEL test passed 100 times or so and transferred calls no longer show an error.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/include/asterisk/cel.h <span style="color: grey">(367201)</span></li>
<li>/trunk/include/asterisk/channel.h <span style="color: grey">(367201)</span></li>
<li>/trunk/main/asterisk.c <span style="color: grey">(367201)</span></li>
<li>/trunk/main/cel.c <span style="color: grey">(367201)</span></li>
<li>/trunk/main/channel.c <span style="color: grey">(367201)</span></li>
<li>/trunk/main/channel_internal_api.c <span style="color: grey">(367201)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1900/diff/" style="margin-left: 3em;">View Diff</a></p>
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