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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1554/">https://reviewboard.asterisk.org/r/1554/</a>
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<p style="margin-top: 0;">On February 24th, 2012, 5:20 p.m., <b>Kevin Fleming</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1554/diff/1/?file=21542#file21542line388" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/include/asterisk/astobj2.h</a>
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(Diff revision 1)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum ao2_alloc_opts {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="cm">/*! Ao2 object has a recursive mutex lock associated with it. */</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;">Please do a global search/replace of 'Ao2' with 'ao2'. :-)</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;">done</pre>
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<p style="margin-top: 0;">On February 24th, 2012, 5:20 p.m., <b>Kevin Fleming</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1554/diff/1/?file=21542#file21542line592" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/include/asterisk/astobj2.h</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; ">Operations on container include:</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 class="ew"> </span> Similar to OBJ_POINTER and mutually exclusive.</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;">blob</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;">done</pre>
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<p style="margin-top: 0;">On February 24th, 2012, 5:20 p.m., <b>Kevin Fleming</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1554/diff/1/?file=21542#file21542line607" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/include/asterisk/astobj2.h</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; ">Operations on container include:</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 class="ew"> </span> Similar to OBJ_POINTER and mutually exclusive.</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;">blob</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;">done</pre>
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<p style="margin-top: 0;">On February 24th, 2012, 5:20 p.m., <b>Kevin Fleming</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1554/diff/1/?file=21542#file21542line736" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/include/asterisk/astobj2.h</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum _cb_results {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * promoted to write mode as needed. The lock will be returned</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"> * to the original locked state.</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;">I'm not sure I follow this; if a rdlock is promoted to a wrlock, it can't be demoted to a rdlock without releasing it first. Is that the intention here?</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, that is the intention so the locking level will remain the same when the ao2 call returns.
Promotion to wrlock from rdlock already releases the lock to re-obtain it as a wrlock.</pre>
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<p style="margin-top: 0;">On February 24th, 2012, 5:20 p.m., <b>Kevin Fleming</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1554/diff/1/?file=21544#file21544line353" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/astobj2.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">enum ao2_callback_type {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"> * \brief Adjust the possible RWLOCK to the requested level.</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;">'the possible RWLOCK' seems like an odd way to describe this. "Attempt to adjust an object's lock to the requested level", with a comment in the body about how the adjustment may differ based on whether the lock is a mutex or an rwlock would probably be more understandable.</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;">Adjusted the \brief and \details sections.</pre>
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<p>- rmudgett</p>
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<p>On October 31st, 2011, 3:01 p.m., rmudgett wrote:</p>
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<div>Review request for Asterisk Developers and David Vossel.</div>
<div>By rmudgett.</div>
<p style="color: grey;"><i>Updated Oct. 31, 2011, 3:01 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;">Add the ability to specify what kind of locking an ao2 object has when it is allocated.
The locking could be one of: MUTEX, RWLOCK, or none.
New API:
ao2_t_alloc_options()
ao2_alloc_options()
ao2_t_container_alloc_options()
ao2_container_alloc_options()
ao2_rdlock()
ao2_wrlock()
ao2_tryrdlock()
ao2_trywrlock()
The OBJ_NOLOCK and AO2_ITERATOR_DONTLOCK flags have a slight meaning
change. They no longer mean that the object is protected by an external
mechanism. They mean the lock associated with the object has already been
manually obtained by one of the ao2_lock calls. This change is necessary
for RWLOCK support since they are not reentrant. Also an operation on an
ao2 container may require promoting a read lock to a write lock by
releasing the already held read lock to re-acquire as a write lock.
The changes to format.c and format_cap.c are taking advantange of the new
ao2 locking options to simplify the use of the format capabilities
containers.
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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;">Ran the ao2 unit tests.
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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/lock.h <span style="color: grey">(342867)</span></li>
<li>/trunk/main/astobj2.c <span style="color: grey">(342867)</span></li>
<li>/trunk/main/format.c <span style="color: grey">(342867)</span></li>
<li>/trunk/main/format_cap.c <span style="color: grey">(342867)</span></li>
<li>/trunk/include/asterisk/astobj2.h <span style="color: grey">(342867)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1554/diff/" style="margin-left: 3em;">View Diff</a></p>
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