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This is an automatically generated e-mail. To reply, visit:
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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;">This patch is looking really good!</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/5/?file=12916#file12916line967" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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(Diff revision 5)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ao2_container *hints;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">struct ast_hintdevice {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> AST_DECLARE_STRING_FIELDS(</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> AST_STRING_FIELD(hintdevice); /*!< device */</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; "> struct ast_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>
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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'm not sure string fields provide enough value here to use them. Since there is only one string in this structure, I would just include it at the end of the structure and allocate enough space for it off of the end of the structure.
struct ast_hintdevice {
struct ast_hint *hint;
char hintdevice[1]; /* malloc sizeof(struct ast_hintdevice) + strlen(whatever_is_going_here) */
};</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/5/?file=12916#file12916line1001" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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(Diff revision 5)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ao2_container *hints;</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; "> * \details This is used with ao2_callback to remove old devices</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> * when they are linked to the hint</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; ">static int hintdevice_remove_cb(void *deviceobj, void *arg, int flags)</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; "> struct ast_hintdevice *device = deviceobj;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> struct ast_hint *hint = arg;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (device->hint == hint) {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> hintdevice_unlink(device);</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; "> return 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; ">static int remove_hintdevice(struct ast_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>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> /* iterate through all devices and remove the devices which are linked to this hint */</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> ao2_t_callback(hintdevices, OBJ_NODATA | OBJ_MULTIPLE, hintdevice_remove_cb, hint ,</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> "callback to remove all devices which are linked to a hint");</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> return 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 there is a more efficient way to implement this operation with astobj2.
First, make your callback do this:
return device->hint == hint ? CMP_MATCH : 0;
Second, use these flags to ao2_callback():
OBJ_NODATA | OBJ_MULTIPLE_OBJ_UNLINK
That should be more efficient than calling ao2_unlink() from within your callback.</pre>
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<a href="https://reviewboard.asterisk.org/r/1003/diff/5/?file=12916#file12916line1055" 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 *hints;</pre></td>
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<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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<a href="https://reviewboard.asterisk.org/r/1003/diff/5/?file=12916#file12916line1065" style="color: black; font-weight: bold; text-decoration: underline;">branches/1.8/main/pbx.c</a>
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(Diff revision 5)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ao2_container *hints;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> if (ast_string_field_init(device, strlen(cur)+1)) {</pre></td>
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<p>- Russell</p>
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<p>On November 16th, 2010, 2:38 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 2010-11-16 02:38:59</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">(295123)</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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