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This is an automatically generated e-mail. To reply, visit:
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<p>Ship it!</p>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">These last comments are pretty minor. After these changes, feel free to merge. Excellent work!</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/6/?file=12924#file12924line955" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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(Diff revision 6)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ao2_container *hintdevices;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">/* WARNING:</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; "> When holding this container's lock, do _not_ do anything that will cause conlock</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> to be taken, unless you _already_ hold it. The ast_merge_contexts_and_delete</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> function will take the locks in conlock/hints order, so any other</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> paths that require both locks must also take them in that order.</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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<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;">It would be good to convert this comment to doxygen format. Also, please convert your other comments to match the style of others with a '*' on each line:
/*!
* \brief
*
* ...
*/</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/6/?file=12924#file12924line1025" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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(Diff revision 6)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ao2_container *hintdevices;</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">1025</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (!strchr(devicelist, '&')) {</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; "> devicelength = strlen(devicelist) + 1;</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">1027</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (!(device = ao2_t_alloc(sizeof(*device) + devicelength, NULL, "allocating a hintdevice structure"))) {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> return -1;</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; "> strcpy(device->hintdevice, devicelist);</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> device->hint = hint;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> ao2_t_link(hintdevices, device, "Linking device into hintdevice container.");</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> ao2_t_ref(device, -1, "hintdevice is linked so we can unref");</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> } else {</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">1036</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (!(str = ast_str_thread_get(&hintdevice_data, 16))) {</pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">1037</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> return -1;</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">1038</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> }</pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">1039</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> ast_str_set(&str, 0, "%s", devicelist);</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">1040</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> parse = ast_str_buffer(str);</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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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">1042</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> while ((cur = strsep(&parse, "&"))) {</pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">1043</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> devicelength = strlen(cur) + 1;</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">1044</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (!(device = ao2_t_alloc(sizeof(*device) + devicelength, NULL, "allocating a hintdevice structure"))) {</pre></td>
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<th bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">1045</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> return -1;</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">1046</font></th>
<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; "> strcpy(device->hintdevice, cur);</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; "> device->hint = hint;</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">1049</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> ao2_t_link(hintdevices, device, "Linking device into hintdevice container.");</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">1050</font></th>
<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> ao2_t_ref(device, -1, "hintdevice is linked so we can unref");</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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<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;">I think for the sake of simplifying the code, I would remove the entire if block for the case that only a single device is specified. Your code in the else block will handle that case, too.</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/6/?file=12924#file12924line1043" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ao2_container *hintdevices;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> devicelength = strlen(cur) + 1;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (!(device = ao2_t_alloc(sizeof(*device) + devicelength, NULL, "allocating a hintdevice structure"))) {</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;">No need to +1 here since you include it in the structure definition</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/6/?file=12924#file12924line4368" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_extension_state(struct ast_channel *c, const char *context, const char *exten)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (!(cmpdevice = ast_malloc(sizeof(*cmpdevice) + strlen(sc->dev) + 1))) {</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;">No need to add +1 here since you include a byte for the trailing null character in the structure definition.</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/6/?file=12924#file12924line4369" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">int ast_extension_state(struct ast_channel *c, const char *context, const char *exten)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> ast_log(LOG_ERROR,"Cannot allocate device.\n");</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;">ast_malloc() will generate an ERROR for you on failure.</pre>
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<p>- Russell</p>
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<p>On November 17th, 2010, 4:35 a.m., schmidts wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By schmidts.</div>
<p style="color: grey;"><i>Updated 2010-11-17 04:35:40</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;">handle_statechange in pbx.c has a very great impact on call handling performance. i have noticed this several times and i have written a solution which makes handle_statechange handling 61 times faster.
i have used the patch (rev. 293802 for 1.4) from russellb and jeffpeeler to also fix a deadlock problem and their part to move hints to an ao2_container.
after thinking about the best solution IMO iterating through the whole hint list/container to maybe find a hint with a matching device is very expensive way. So i have used a own container for devices which just have a link back to their hint.
This means there is a hashed cmp for devices which gives back a multiple object ao2_iterator for all hints, this device, which have a state change, is used in.
these devices are not longer limited to any length so its possible to use a hint for 100 peers at once.
Tilghman Lesher noticed on the dev-list what would happen when a dynamic hint is used. I have tried this with one dynamic hint and subscribe up to 2500 different users on this, several times and it works just fine. If a subscribe for a dynamic hint comes in, a static extension with static appdata is generated which acts like a normal hint so there is no problem on this. </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;">dialplan reload drops all devices out of the device container and recreate them by their callback list.
core show hint / hints show all hints also dynamic and their watchers
loadtests shows the following result:
orig version:
handle_statechange COUNTER: 10009 overalltime: 7041 ms
MAX: 365 CPS
patched version:
handle_statechange COUNTER: 10009 overalltime: 115 ms
MAX: 580 CPS
same setup, same config tested with sipp.</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/main/pbx.c <span style="color: grey">(295358)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1003/diff/" style="margin-left: 3em;">View Diff</a></p>
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