jdk-build-libs
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json-c

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<p>Internal methods for working with json_type_object objects. Although this is exposed by the <a class="el" href="json__object_8h.html#a2caa52ae1863bd073444f3737138a4db">json_object_get_object()</a> function and within the <a class="el" href="structjson__object__iter.html">json_object_iter</a> type, it is not recommended for direct use.  
<a href="#details">More...</a></p>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structlh__entry.html">lh_entry</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structlh__table.html">lh_table</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Macros</h2></td></tr>
<tr class="memitem:a032f1bd115df254dda325437203ce5fb"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a032f1bd115df254dda325437203ce5fb">LH_PRIME</a>&#160;&#160;&#160;0x9e370001UL</td></tr>
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<tr class="memitem:ac32e80138c5be6dd9b0483a9cbcc8799"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#ac32e80138c5be6dd9b0483a9cbcc8799">JSON_C_STR_HASH_DFLT</a>&#160;&#160;&#160;0</td></tr>
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<tr class="memitem:a62316f34fd42941b97a8e9a6b6e68faa"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a62316f34fd42941b97a8e9a6b6e68faa">JSON_C_STR_HASH_PERLLIKE</a>&#160;&#160;&#160;1</td></tr>
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<tr class="memitem:ad7dd67da915065dce2c6f44cb03e2d82"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#ad7dd67da915065dce2c6f44cb03e2d82">lh_foreach</a>(table, entry)&#160;&#160;&#160;for (entry = table-&gt;head; entry; entry = entry-&gt;next)</td></tr>
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<tr class="memitem:a7579ce28b8366fc9b8656f14270aa3aa"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a7579ce28b8366fc9b8656f14270aa3aa">lh_entry_k</a>(entry)&#160;&#160;&#160;<a class="el" href="linkhash_8h.html#afb856ed4a9bcfd090dde5151fa3ad9ae">_LH_UNCONST</a>((entry)-&gt;k)</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:a671553d0ee3c2a123190ba0f8ed2b635"><td class="memItemLeft" align="right" valign="top">typedef void(&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a671553d0ee3c2a123190ba0f8ed2b635">lh_entry_free_fn</a> )(struct <a class="el" href="structlh__entry.html">lh_entry</a> *e)</td></tr>
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<tr class="memitem:a38bae27995dcfb6ee3fb109a9be229b2"><td class="memItemLeft" align="right" valign="top">typedef unsigned long(&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a38bae27995dcfb6ee3fb109a9be229b2">lh_hash_fn</a> )(const void *k)</td></tr>
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<tr class="memitem:a91fd85fc81b0c7c83c62f00e84729091"><td class="memItemLeft" align="right" valign="top">typedef int(&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a91fd85fc81b0c7c83c62f00e84729091">lh_equal_fn</a> )(const void *k1, const void *k2)</td></tr>
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<tr class="memitem:a766e90057496fc6712d6be0da180a21f"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="structlh__table.html">lh_table</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a766e90057496fc6712d6be0da180a21f">lh_table</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ac8e1d61af44d9c0824d8c7980385bcd3"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#ac8e1d61af44d9c0824d8c7980385bcd3">json_global_set_string_hash</a> (const int h)</td></tr>
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<tr class="memitem:a9c4f8a71dbe4d3390d9f7adb331beb0e"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a9c4f8a71dbe4d3390d9f7adb331beb0e">lh_table_new</a> (int size, <a class="el" href="linkhash_8h.html#a671553d0ee3c2a123190ba0f8ed2b635">lh_entry_free_fn</a> *free_fn, <a class="el" href="linkhash_8h.html#a38bae27995dcfb6ee3fb109a9be229b2">lh_hash_fn</a> *hash_fn, <a class="el" href="linkhash_8h.html#a91fd85fc81b0c7c83c62f00e84729091">lh_equal_fn</a> *equal_fn)</td></tr>
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<tr class="memitem:af8108563b961dbf5471fe2c0e51f40a5"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#af8108563b961dbf5471fe2c0e51f40a5">lh_kptr_table_new</a> (int size, <a class="el" href="linkhash_8h.html#a671553d0ee3c2a123190ba0f8ed2b635">lh_entry_free_fn</a> *free_fn)</td></tr>
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<tr class="memitem:a81653acf740cf8c9fe672e6cd16df0cf"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a81653acf740cf8c9fe672e6cd16df0cf">lh_table_free</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t)</td></tr>
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<tr class="memitem:a86c0cd547be1e2c2486a73bd58e1352c"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a86c0cd547be1e2c2486a73bd58e1352c">lh_table_insert</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t, const void *k, const void *v)</td></tr>
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<tr class="memitem:a4558a9347a422e03a15b0b7a29b82dc3"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a4558a9347a422e03a15b0b7a29b82dc3">lh_table_insert_w_hash</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t, const void *k, const void *v, const unsigned long h, const unsigned opts)</td></tr>
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<tr class="memitem:ad3b6ca2d967a6c3021ee6c39e014a918"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structlh__entry.html">lh_entry</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#ad3b6ca2d967a6c3021ee6c39e014a918">lh_table_lookup_entry</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t, const void *k)</td></tr>
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<tr class="memitem:a59ecaf34ef59280952f4459b2de63677"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structlh__entry.html">lh_entry</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a59ecaf34ef59280952f4459b2de63677">lh_table_lookup_entry_w_hash</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t, const void *k, const unsigned long h)</td></tr>
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<tr class="memitem:ae5885a71c3457190fb1dc2d6e20dde3b"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#ae5885a71c3457190fb1dc2d6e20dde3b">lh_table_delete_entry</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t, struct <a class="el" href="structlh__entry.html">lh_entry</a> *e)</td></tr>
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<tr class="memitem:a2fed2c78f70d229edb2d00775ffe593c"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a2fed2c78f70d229edb2d00775ffe593c">lh_table_delete</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t, const void *k)</td></tr>
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<tr class="memitem:ac9ba631c91fe80fb905f04c7cd526f2b"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#ac9ba631c91fe80fb905f04c7cd526f2b">lh_table_length</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t)</td></tr>
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<tr class="memitem:a30c8414e31aeee7669acc938116d933f"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="linkhash_8h.html#a30c8414e31aeee7669acc938116d933f">lh_table_resize</a> (struct <a class="el" href="structlh__table.html">lh_table</a> *t, int new_size)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Internal methods for working with json_type_object objects. Although this is exposed by the <a class="el" href="json__object_8h.html#a2caa52ae1863bd073444f3737138a4db">json_object_get_object()</a> function and within the <a class="el" href="structjson__object__iter.html">json_object_iter</a> type, it is not recommended for direct use. </p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="a77c5cddef96e6f1ab036ccf911783456"></a>
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</div><div class="memdoc">
<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000007">Deprecated:</a></b></dt><dd>Don't use this outside of <a class="el" href="linkhash_8h.html" title="Internal methods for working with json_type_object objects. Although this is exposed by the json_obje...">linkhash.h</a>: </dd></dl>

</div>
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<a class="anchor" id="afb856ed4a9bcfd090dde5151fa3ad9ae"></a>
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</div><div class="memdoc">
<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000008">Deprecated:</a></b></dt><dd>Don't use this outside of <a class="el" href="linkhash_8h.html" title="Internal methods for working with json_type_object objects. Although this is exposed by the json_obje...">linkhash.h</a>: </dd></dl>

</div>
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<a class="anchor" id="ac32e80138c5be6dd9b0483a9cbcc8799"></a>
<div class="memitem">
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<p>default string hash function </p>

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          <td class="memname">#define JSON_C_STR_HASH_PERLLIKE&#160;&#160;&#160;1</td>
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<p>perl-like string hash function </p>

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          <td class="memname">#define LH_EMPTY&#160;&#160;&#160;(void *)-1</td>
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<p>sentinel pointer value for empty slots </p>

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          <td class="memname">#define lh_entry_k</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">entry</td><td>)</td>
          <td>&#160;&#160;&#160;<a class="el" href="linkhash_8h.html#afb856ed4a9bcfd090dde5151fa3ad9ae">_LH_UNCONST</a>((entry)-&gt;k)</td>
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<p>Return a non-const version of <a class="el" href="structlh__entry.html#a79d9f1ef0dc444e17105aaeaf167e22c">lh_entry.k</a>.</p>
<p><a class="el" href="structlh__entry.html#a79d9f1ef0dc444e17105aaeaf167e22c">lh_entry.k</a> is const to indicate and help ensure that linkhash itself doesn't modify it, but callers are allowed to do what they want with it. See also <a class="el" href="structlh__entry.html#a14f40cc124c32b03f81151ae7934d2e7">lh_entry.k_is_constant</a> </p>

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          <td class="memname">#define lh_entry_v</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">entry</td><td>)</td>
          <td>&#160;&#160;&#160;<a class="el" href="linkhash_8h.html#afb856ed4a9bcfd090dde5151fa3ad9ae">_LH_UNCONST</a>((entry)-&gt;v)</td>
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<p>Return a non-const version of <a class="el" href="structlh__entry.html#a1b676732ab2ad3eeaedf6ec60a6a0835">lh_entry.v</a>.</p>
<p>v is const to indicate and help ensure that linkhash itself doesn't modify it, but callers are allowed to do what they want with it. </p>

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          <td class="memname">#define lh_foreach</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">table, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">entry&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td>&#160;&#160;&#160;for (entry = table-&gt;head; entry; entry = entry-&gt;next)</td>
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<p>Convenience list iterator. </p>

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          <td class="memname">#define lh_foreach_safe</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">table, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">entry, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">tmp&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td>&#160;&#160;&#160;for (entry = table-&gt;head; entry &amp;&amp; ((tmp = entry-&gt;next) || 1); entry = tmp)</td>
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<p>lh_foreach_safe allows calling of deletion routine while iterating.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">table</td><td>a struct <a class="el" href="structlh__table.html">lh_table</a> * to iterate over </td></tr>
    <tr><td class="paramname">entry</td><td>a struct <a class="el" href="structlh__entry.html">lh_entry</a> * variable to hold each element </td></tr>
    <tr><td class="paramname">tmp</td><td>a struct <a class="el" href="structlh__entry.html">lh_entry</a> * variable to hold a temporary pointer to the next element </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">#define LH_FREED&#160;&#160;&#160;(void *)-2</td>
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<p>sentinel pointer value for freed slots </p>

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          <td class="memname">#define LH_LOAD_FACTOR&#160;&#160;&#160;0.66</td>
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<p>The fraction of filled hash buckets until an insert will cause the table to be resized. This can range from just above 0 up to 1.0. </p>

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<p>golden prime used in hash functions </p>

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<h2 class="groupheader">Typedef Documentation</h2>
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<p>callback function prototypes </p>

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<p>callback function prototypes </p>

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<p>callback function prototypes </p>

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<h2 class="groupheader">Function Documentation</h2>
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          <td class="memname">int json_global_set_string_hash </td>
          <td>(</td>
          <td class="paramtype">const int&#160;</td>
          <td class="paramname"><em>h</em></td><td>)</td>
          <td></td>
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<p>This function sets the hash function to be used for strings. Must be one of the JSON_C_STR_HASH_* values. </p>
<dl class="section return"><dt>Returns</dt><dd>0 - ok, -1 if parameter was invalid </dd></dl>

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          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>size</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="linkhash_8h.html#a671553d0ee3c2a123190ba0f8ed2b635">lh_entry_free_fn</a> *&#160;</td>
          <td class="paramname"><em>free_fn</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Convenience function to create a new linkhash table with char keys.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">size</td><td>initial table size. </td></tr>
    <tr><td class="paramname">free_fn</td><td>callback function used to free memory for entries. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>On success, a pointer to the new linkhash table is returned. On error, a null pointer is returned. </dd></dl>

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          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>size</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="linkhash_8h.html#a671553d0ee3c2a123190ba0f8ed2b635">lh_entry_free_fn</a> *&#160;</td>
          <td class="paramname"><em>free_fn</em>&#160;</td>
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        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Convenience function to create a new linkhash table with ptr keys.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">size</td><td>initial table size. </td></tr>
    <tr><td class="paramname">free_fn</td><td>callback function used to free memory for entries. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>On success, a pointer to the new linkhash table is returned. On error, a null pointer is returned. </dd></dl>

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          <td class="memname">int lh_table_delete </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>k</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>Delete a record from the table.</p>
<p>If a callback free function is provided then it is called for the for the item being deleted. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>the table to delete from. </td></tr>
    <tr><td class="paramname">k</td><td>a pointer to the key to delete. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if the item was deleted. </dd>
<dd>
-1 if it was not found. </dd></dl>

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          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">struct <a class="el" href="structlh__entry.html">lh_entry</a> *&#160;</td>
          <td class="paramname"><em>e</em>&#160;</td>
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          <td></td>
          <td>)</td>
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<p>Delete a record from the table.</p>
<p>If a callback free function is provided then it is called for the for the item being deleted. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>the table to delete from. </td></tr>
    <tr><td class="paramname">e</td><td>a pointer to the entry to delete. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if the item was deleted. </dd>
<dd>
-1 if it was not found. </dd></dl>

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          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em></td><td>)</td>
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<p>Free a linkhash table.</p>
<p>If a lh_entry_free_fn callback free function was provided then it is called for all entries in the table.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>table to free. </td></tr>
  </table>
  </dd>
</dl>

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          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>k</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>v</em>&#160;</td>
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        <tr>
          <td></td>
          <td>)</td>
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        </tr>
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<p>Insert a record into the table.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>the table to insert into. </td></tr>
    <tr><td class="paramname">k</td><td>a pointer to the key to insert. </td></tr>
    <tr><td class="paramname">v</td><td>a pointer to the value to insert.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>On success, <code>0</code> is returned. On error, a negative value is returned. </dd></dl>

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          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>k</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>v</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const unsigned long&#160;</td>
          <td class="paramname"><em>h</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const unsigned&#160;</td>
          <td class="paramname"><em>opts</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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<p>Insert a record into the table using a precalculated key hash.</p>
<p>The hash h, which should be calculated with lh_get_hash() on k, is provided by the caller, to allow for optimization when multiple operations with the same key are known to be needed.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>the table to insert into. </td></tr>
    <tr><td class="paramname">k</td><td>a pointer to the key to insert. </td></tr>
    <tr><td class="paramname">v</td><td>a pointer to the value to insert. </td></tr>
    <tr><td class="paramname">h</td><td>hash value of the key to insert </td></tr>
    <tr><td class="paramname">opts</td><td>if set to JSON_C_OBJECT_KEY_IS_CONSTANT, sets <a class="el" href="structlh__entry.html#a14f40cc124c32b03f81151ae7934d2e7">lh_entry.k_is_constant</a> so t's free function knows to avoid freeing the key. </td></tr>
  </table>
  </dd>
</dl>

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          <td class="memname">int lh_table_length </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em></td><td>)</td>
          <td></td>
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          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>k</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p>Lookup a record in the table.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>the table to lookup </td></tr>
    <tr><td class="paramname">k</td><td>a pointer to the key to lookup </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>a pointer to the record structure of the value or NULL if it does not exist. </dd></dl>

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          <td class="memname">struct <a class="el" href="structlh__entry.html">lh_entry</a>* lh_table_lookup_entry_w_hash </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>k</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const unsigned long&#160;</td>
          <td class="paramname"><em>h</em>&#160;</td>
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          <td>)</td>
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<p>Lookup a record in the table using a precalculated key hash.</p>
<p>The hash h, which should be calculated with lh_get_hash() on k, is provided by the caller, to allow for optimization when multiple operations with the same key are known to be needed.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>the table to lookup </td></tr>
    <tr><td class="paramname">k</td><td>a pointer to the key to lookup </td></tr>
    <tr><td class="paramname">h</td><td>hash value of the key to lookup </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>a pointer to the record structure of the value or NULL if it does not exist. </dd></dl>

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          <td class="memname"><a class="el" href="json__types_8h.html#a81f02022906fafc71eb9197049f07f73">json_bool</a> lh_table_lookup_ex </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">const void *&#160;</td>
          <td class="paramname"><em>k</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void **&#160;</td>
          <td class="paramname"><em>v</em>&#160;</td>
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          <td></td>
          <td>)</td>
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        </tr>
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<p>Lookup a record in the table.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>the table to lookup </td></tr>
    <tr><td class="paramname">k</td><td>a pointer to the key to lookup </td></tr>
    <tr><td class="paramname">v</td><td>a pointer to a where to store the found value (set to NULL if it doesn't exist). </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>whether or not the key was found </dd></dl>

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          <td class="memname">struct <a class="el" href="structlh__table.html">lh_table</a>* lh_table_new </td>
          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>size</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="linkhash_8h.html#a671553d0ee3c2a123190ba0f8ed2b635">lh_entry_free_fn</a> *&#160;</td>
          <td class="paramname"><em>free_fn</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="linkhash_8h.html#a38bae27995dcfb6ee3fb109a9be229b2">lh_hash_fn</a> *&#160;</td>
          <td class="paramname"><em>hash_fn</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="linkhash_8h.html#a91fd85fc81b0c7c83c62f00e84729091">lh_equal_fn</a> *&#160;</td>
          <td class="paramname"><em>equal_fn</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Create a new linkhash table.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">size</td><td>initial table size. The table is automatically resized although this incurs a performance penalty. </td></tr>
    <tr><td class="paramname">free_fn</td><td>callback function used to free memory for entries when lh_table_free or lh_table_delete is called. If NULL is provided, then memory for keys and values must be freed by the caller. </td></tr>
    <tr><td class="paramname">hash_fn</td><td>function used to hash keys. 2 standard ones are defined: lh_ptr_hash and lh_char_hash for hashing pointer values and C strings respectively. </td></tr>
    <tr><td class="paramname">equal_fn</td><td>comparison function to compare keys. 2 standard ones defined: lh_ptr_hash and lh_char_hash for comparing pointer values and C strings respectively. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>On success, a pointer to the new linkhash table is returned. On error, a null pointer is returned. </dd></dl>

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          <td class="memname">int lh_table_resize </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structlh__table.html">lh_table</a> *&#160;</td>
          <td class="paramname"><em>t</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>new_size</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Resizes the specified table.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">t</td><td>Pointer to table to resize. </td></tr>
    <tr><td class="paramname">new_size</td><td>New table size. Must be positive.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>On success, <code>0</code> is returned. On error, a negative value is returned. </dd></dl>

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