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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2264/">https://reviewboard.asterisk.org/r/2264/</a>
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<a href="https://reviewboard.asterisk.org/r/2264/diff/2/?file=32776#file32776line357" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/res/res_json.c</a>
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(Diff revision 2)
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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; ">static int write_to_ast_str(const char *buffer, size_t size, void *data)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">while</span> <span class="p">(</span><span class="n">remaining</span> <span class="o"><</span> <span class="n">size</span><span class="p">)</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; "> <span class="cm">/* doubling the size of the buffer gives us 'amortized</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"> * constant' time.</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"> * See http://stackoverflow.com/a/249695/115478 for info.</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"> */</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">int</span> <span class="n">ret</span> <span class="o">=</span> <span class="n">ast_str_make_space</span><span class="p">(</span><span class="n">dst</span><span class="p">,</span> <span class="mi">2</span> <span class="o">*</span> <span class="n">ast_str_size</span><span class="p">(</span><span class="o">*</span><span class="n">dst</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;">Ok, you're doubling it because we can expect more data in the future.
But putting the make_space() call inside the loop looks inefficient.
while(remaining < size) {
multiplier <<= 1;
remaining = ast_str_size(*dst) * multiplier - ast_str_strlen(*dst);
}
.. and I believe make_space() does not account for the terminating NUL that append_substr() will be adding.
P.S. Should dump_str() get a load_str() friend?</pre>
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<p>- wdoekes</p>
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<p>On January 9th, 2013, 11:26 p.m., David Lee wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By David Lee.</div>
<p style="color: grey;"><i>Updated Jan. 9, 2013, 11:26 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;">This provides a JSON API by pulling in and wrapping the Jansson JSON
library[1]. The Asterisk API basically mirrors the Jansson
functionality, with a few minor tweaks:
* Jansson provides both reference-stealing and reference-borrowing
versions of several API's. The Asterisk API is exclusively
reference-stealing for operations that put elements into arrays and
objects.
* No support for doubles, since we usually don't need that.
* Coming along for the ride is the ast_test_check macro, which makes
it easier to accumulate the results of several operations in a test.
[1]: http://www.digip.org/jansson/</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;">Behold, extensive unit tests!</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-20888">ASTERISK-20888</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/build_tools/menuselect-deps.in <span style="color: grey">(378906)</span></li>
<li>/trunk/configure.ac <span style="color: grey">(378906)</span></li>
<li>/trunk/contrib/scripts/install_prereq <span style="color: grey">(378906)</span></li>
<li>/trunk/include/asterisk/autoconfig.h.in <span style="color: grey">(378906)</span></li>
<li>/trunk/include/asterisk/json.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/include/asterisk/test.h <span style="color: grey">(378906)</span></li>
<li>/trunk/main/Makefile <span style="color: grey">(378906)</span></li>
<li>/trunk/main/test.c <span style="color: grey">(378906)</span></li>
<li>/trunk/makeopts.in <span style="color: grey">(378906)</span></li>
<li>/trunk/res/res_json.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/res/res_json.exports.in <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/tests/test_json.c <span style="color: grey">(PRE-CREATION)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2264/diff/" style="margin-left: 3em;">View Diff</a></p>
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