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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2052/">https://reviewboard.asterisk.org/r/2052/</a>
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<a href="https://reviewboard.asterisk.org/r/2052/diff/1/?file=30360#file30360line625" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/rtp_engine.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; ">int ast_rtp_codecs_payloads_set_rtpmap_type(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance, int payload, char *mimetype, char *mimesubtype, enum ast_rtp_options options)</pre></td>
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<th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">547</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">codecs</span><span class="o">-></span><span class="n">payloads</span><span class="p">[</span><span class="n">payload</span><span class="p">].</span><span class="n">asterisk_format</span> <span class="o">=</span> <span class="mi">0</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="n">type</span> <span class="o">=</span> <span class="n">ao2_find</span><span class="p">(</span><span class="n">codecs</span><span class="o">-></span><span class="n">payloads</span><span class="p">,</span> <span class="o">&</span><span class="n">payload</span><span class="p">,</span> <span class="n">OBJ_KEY</span> <span class="o">|</span> <span class="n">OBJ_NOLOCK</span><span class="p">)))</span> <span class="p">{</span></pre></td>
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<th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">548</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">codecs</span><span class="o">-></span><span class="n">payloads</span><span class="p">[</span><span class="n">payload</span><span class="p">].</span><span class="n">rtp_code</span> <span class="o">=</span> <span class="mi">0</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="n">ao2_unlink_flags</span><span class="p">(</span><span class="n">codecs</span><span class="o">-></span><span class="n">payloads</span><span class="p">,</span> <span class="n">type</span><span class="p">,</span> <span class="n">OBJ_NOLOCK</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="n">ast_format_clear</span><span class="p">(</span><span class="o">&</span><span class="n">codecs</span><span class="o">-></span><span class="n">payloads</span><span class="p">[</span><span class="n">payload</span><span class="p">].</span><span class="n">format</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="n">ao2_ref</span><span class="p">(</span><span class="n">type</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</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; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></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;">You could just do:
ao2_find(codecs->payloads, &payload, OBJ_KEY | OBJ_NOLOCK | OBJ_NODATA | OBJ_UNLINK);
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<a href="https://reviewboard.asterisk.org/r/2052/diff/1/?file=30360#file30360line667" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/main/rtp_engine.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; ">int ast_rtp_codecs_payloads_set_rtpmap_type(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance, int payload, char *mimetype, char *mimesubtype, enum ast_rtp_options options)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">658</font></th>
<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="p">(</span><span class="n">type</span> <span class="o">=</span> <span class="n">ao2_find</span><span class="p">(</span><span class="n">codecs</span><span class="o">-></span><span class="n">payloads</span><span class="p">,</span> <span class="o">&</span><span class="n">payload</span><span class="p">,</span> <span class="n">OBJ_KEY</span> <span class="o">|</span> <span class="n">OBJ_NOLOCK</span><span class="p">)))</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="k">return</span> <span class="nb">NULL</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="k">return</span> <span class="nb">NULL</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="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="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">return</span> <span class="o">&</span><span class="n">codecs</span><span class="o">-></span><span class="n">payloads</span><span class="p">[</span><span class="n">payload</span><span class="p">].</span><span class="n">format</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; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">format</span> <span class="o">=</span> <span class="n">type</span><span class="o">-></span><span class="n">asterisk_format</span> <span class="o">?</span> <span class="o">&</span><span class="n">type</span><span class="o">-></span><span class="n">format</span> <span class="o">:</span> <span class="nb">NULL</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; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></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_ref</span><span class="p">(</span><span class="n">type</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</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; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">format</span><span class="p">;</span></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;">The use of "format" here appears unsafe to me.
Since format is pointing to data within an ao2 object, it's possible that the ao2 object can get destroyed, thus leaving format pointing to freed memory.</pre>
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<p>- Mark</p>
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<p>On July 18th, 2012, 10:47 a.m., Joshua Colp wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Joshua Colp.</div>
<p style="color: grey;"><i>Updated July 18, 2012, 10:47 a.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;">While doing the media attribute work I needed to increase the available space for attribute information but this has caused stack space usage to increase. While I have reduced it some there is still quite a bit of memory being consumed. To help with this I have converted ast_rtp_codecs to use astobj2 internally for storing payload information. The only memory used will be that of payloads present in the structure, and not a huge array containing every possible one. For all cases this should reduce memory consumption considerably and for most cases should reduce it to an amount lower than before attribute support was even added.</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;">Done my own testing with calls to ensure they still work properly, and also ran the testsuite.</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/channels/chan_motif.c <span style="color: grey">(370182)</span></li>
<li>/trunk/channels/chan_sip.c <span style="color: grey">(370182)</span></li>
<li>/trunk/include/asterisk/rtp_engine.h <span style="color: grey">(370182)</span></li>
<li>/trunk/main/rtp_engine.c <span style="color: grey">(370182)</span></li>
<li>/trunk/res/res_rtp_asterisk.c <span style="color: grey">(370182)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2052/diff/" style="margin-left: 3em;">View Diff</a></p>
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