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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1072/">https://reviewboard.asterisk.org/r/1072/</a>
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<p>Ship it!</p>
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<a href="https://reviewboard.asterisk.org/r/1072/diff/3/?file=14879#file14879line4189" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.6.2/main/pbx.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 int ast_change_hint(struct ast_exten *oe, struct ast_exten *ne)</pre></td>
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<th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">4164</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> while ((cblist = AST_LIST_REMOVE_HEAD(&hint->callbacks, entry))) {</pre></td>
<th bgcolor="#e9eaa8" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">4171</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> while ((state_cb = ao2_callback(hint->callbacks, OBJ_UNLINK, match_all_cb, NULL))) {</pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">if you just pass NULL as the callback, you'll get the same behavior</pre>
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<p>- Russell</p>
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<p>On January 18th, 2011, 12:41 p.m., Jeff Peeler wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Jeff Peeler.</div>
<p style="color: grey;"><i>Updated 2011-01-18 12:41:53</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;">Lock scenario:
Thread 1
holds ast_rdlock_contexts &conlock
holds handle_statechange hints
holds handle_statechange hint
waiting for cb_extensionstate
Locked Here: chan_sip.c line 7428 (find_call)
Thread 2
holds handle_request_do &netlock
holds find_call sip_pvt_ptr
waiting for ast_rdlock_contexts &conlock
Locked Here: pbx.c line 9911 (ast_rdlock_contexts)
Chan_sip has an established locking order of locking the sip_pvt and then getting the context lock. So the as stated by the summary, the operations in thread 2 have been modified to no longer require the context lock.</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;">one47 has reported on the issue that it has been going well so far (for 18 hours):
https://issues.asterisk.org/view.php?id=18310#130297</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/view.php?id=18310">18310</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/1.6.2/main/pbx.c <span style="color: grey">(302171)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1072/diff/" style="margin-left: 3em;">View Diff</a></p>
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