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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1697/">https://reviewboard.asterisk.org/r/1697/</a>
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<p style="margin-top: 0;">On January 27th, 2012, 9:26 a.m., <b>Kevin Fleming</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1697/diff/1/?file=23665#file23665line1401" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/apps/app_queue.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int get_member_status(struct call_queue *q, int max_penalty, int min_penalty, enum empty_conditions conditions)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ao2_unlock</span><span class="p">(</span><span class="n">q</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;">What was the reasoning for moving this (and the other) 'unlock' operations?</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;">Mostly construct/destruct symmetry.
Also when I am able to implement my astobj2 container enhancements, if you use the AO2_ITERATOR_DONTLOCK option flag you *must* keep the container locked for the entire iteration including the ao2_iterator_destroy.</pre>
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<p style="margin-top: 0;">On January 27th, 2012, 9:26 a.m., <b>Kevin Fleming</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1697/diff/1/?file=23665#file23665line6831" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/apps/app_queue.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int reload_queues(int reload, struct ast_flags *mask, const char *queuename)</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">struct</span> <span class="n">ao2_iterator</span> <span class="n">queue_iter</span><span class="hl"> </span><span class="o"><span class="hl">=</span></span><span class="hl"> </span><span class="n"><span class="hl">ao2_iterator_init</span></span><span class="p"><span class="hl">(</span></span><span class="n"><span class="hl">queues</span></span><span class="p"><span class="hl">,</span></span><span class="hl"> </span><span class="mi"><span class="hl">0</span></span><span class="p"><span class="hl">)</span>;</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">struct</span> <span class="n">ao2_iterator</span> <span class="n">queue_iter</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="n">queue_iter</span> <span class="o">=</span> <span class="n">ao2_iterator_init</span><span class="p">(</span><span class="n">queues</span><span class="p">,</span> <span class="mi">0</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;">How is this better?</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;">In this particular instance it isn't much of an improvement. However, I am seeing a lot of cases where indiscriminate initialization like this causes harm. There are a few places fixed with this patch where that is the case.
For example:
void foo(struct ast_channel *chan)
{
const char *name = chan->name;
if (!chan) {
return;
}
...
}
This function will crash if chan is NULL even though it is supposedly checking for it.</pre>
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<p>- rmudgett</p>
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<p>On January 26th, 2012, 8:03 p.m., rmudgett wrote:</p>
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<div>Review request for Asterisk Developers and Mark Michelson.</div>
<div>By rmudgett.</div>
<p style="color: grey;"><i>Updated Jan. 26, 2012, 8:03 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;">I audited the usage of the ao2_iterator_init() function in the v1.8 code base.
I checked that the iterator was destroyed and that the current iteration object reference was not leaked.
This patch fixes numerous reference leaks and missing ao2_iterator_destroy() calls as a result.</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;">It compiles. :)</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/branches/1.8/apps/app_chanspy.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/apps/app_queue.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/channels/chan_iax2.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/channels/chan_sip.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/include/asterisk/indications.h <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/main/indications.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/main/pbx.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/main/taskprocessor.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/res/res_odbc.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/res/res_srtp.c <span style="color: grey">(352861)</span></li>
<li>/branches/1.8/res/snmp/agent.c <span style="color: grey">(352861)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1697/diff/" style="margin-left: 3em;">View Diff</a></p>
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