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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/1635/">https://reviewboard.asterisk.org/r/1635/</a>
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<p style="margin-top: 0;">On December 21st, 2011, 5:15 a.m., <b>schmidts</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1635/diff/1/?file=22283#file22283line921" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/main/pbx.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; ">struct ast_app {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="cm">/*! Watcher ID returned when registered. */</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">id</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">id</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;">imho it would be a good idea to add a flag here if this is a global callback or not and also have unique ids also on global callbacks.
But i think this would have too much impact on the code for 1.8 ;)</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 id value being zero is the flag indicating that it is a global callback. Global callbacks distinguish themselves from each other by the callback function pointer.</pre>
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<p style="margin-top: 0;">On December 21st, 2011, 5:15 a.m., <b>schmidts</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1635/diff/1/?file=22283#file22283line957" style="color: black; font-weight: bold; text-decoration: underline;">/branches/1.8/main/pbx.c</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; ">static const int HASH_EXTENHINT_SIZE = 17;</pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="k"><span class="hl">static</span></span><span class="hl"> </span><span class="k"><span class="hl">const</span></span><span class="hl"> </span><span class="kt"><span class="hl">int</span></span> <span class="n">HASH_EXTENHINT_SIZE</span> <span class="o"><span class="hl">=</span></span><span class="hl"> </span><span class="mi"><span class="hl">17</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="cp"><span class="hl">#define</span> HASH_EXTENHINT_SIZE <span class="hl">17</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="cp">#else</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cp">#else</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"><span class="hl">static</span></span><span class="hl"> </span><span class="k"><span class="hl">const</span></span><span class="hl"> </span><span class="kt"><span class="hl">int</span></span> <span class="n">HASH_EXTENHINT_SIZE</span> <span class="o"><span class="hl">=</span></span><span class="hl"> </span><span class="mi">563</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="cp"><span class="hl">#define</span> HASH_EXTENHINT_SIZE 563</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 changing this to static const unsigned hash_extenhint_size would also be ok?</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;">C code should not be using C++ idioms. In this case, the code has a slightly different meaning in the linkage. C actually declares a variable with the initialization value. C++ does not necesisarily declare a variable but a compile time constant with behavior similar to a define constant.</pre>
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<p>- rmudgett</p>
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<p>On December 20th, 2011, 4 p.m., rmudgett wrote:</p>
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<div>Review request for Asterisk Developers and Matt Jordan.</div>
<div>By rmudgett.</div>
<p style="color: grey;"><i>Updated Dec. 20, 2011, 4 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;">Fix extension state callback references in chan_sip.
Chan_sip gives a dialog reference to the extension state callback and
assumes that when ast_extension_state_del() returns, the callback cannot
happen anymore. Chan_sip then reduces the dialog reference count
associated with the callback. Recent changes (ASTERISK-17760) have
resulted in the potential for the callback to happen after
ast_extension_state_del() has returned. For chan_sip, this could be very
bad because the dialog pointer could have already been destroyed.
* Added ast_extension_state_add_destroy() so chan_sip can account for the
sip_pvt reference given to the extension state callback when the extension
state callback is deleted.
* Fix pbx.c awkward statecbs handling in ast_extension_state_add_destroy()
and handle_statechange() now that the struct ast_state_cb has a destructor
to call.
* Ensure that ast_extension_state_add_destroy() will never return -1 or 0
for a successful registration.
* Fixed pbx.c statecbs_cmp() to compare the correct information. The
passed in value to compare is a change_cb function pointer not an object
pointer.
* Make pbx.c ast_merge_contexts_and_delete() not perform callbacks with
AST_EXTENSION_REMOVED with locks held. Chan_sip is notorious for
deadlocking when those locks are held during the callback.
* Removed unused lock declaration for the pbx.c store_hints list.
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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 and basic call testing only.</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-18844">ASTERISK-18844</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/1.8/channels/chan_sip.c <span style="color: grey">(348734)</span></li>
<li>/branches/1.8/include/asterisk/pbx.h <span style="color: grey">(348734)</span></li>
<li>/branches/1.8/main/pbx.c <span style="color: grey">(348734)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1635/diff/" style="margin-left: 3em;">View Diff</a></p>
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