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<a href="#define-members">Macros</a> |
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<div class="title">Hash Tables<div class="ingroups"><a class="el" href="group___a_p_r.html">Apache Portability Runtime library</a></div></div> </div>
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Macros</h2></td></tr>
<tr class="memitem:ga3ba32541f2717b394000f87f38c7e12d"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga3ba32541f2717b394000f87f38c7e12d">APR_HASH_KEY_STRING</a>   (-1)</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:ga72ec09b8bde6d874c36bd49df915fff6"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a></td></tr>
<tr class="separator:ga72ec09b8bde6d874c36bd49df915fff6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga3b3d353989f6cea4535630634be147f7"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a></td></tr>
<tr class="separator:ga3b3d353989f6cea4535630634be147f7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga0bf5622266af13a2489c907a101cb156"><td class="memItemLeft" align="right" valign="top">typedef unsigned int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga0bf5622266af13a2489c907a101cb156">apr_hashfunc_t</a>) (const char *key, apr_ssize_t *klen)</td></tr>
<tr class="separator:ga0bf5622266af13a2489c907a101cb156"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gafaf9b4435ab207b7708533cb8544face"><td class="memItemLeft" align="right" valign="top">typedef int() </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#gafaf9b4435ab207b7708533cb8544face">apr_hash_do_callback_fn_t</a>(void *rec, const void *key, apr_ssize_t klen, const void *value)</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:ga8baa6e9d9d6c2c496d2a0ff1a5c53abe"><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga8baa6e9d9d6c2c496d2a0ff1a5c53abe">apr_hashfunc_default</a> (const char *key, apr_ssize_t *klen)</td></tr>
<tr class="separator:ga8baa6e9d9d6c2c496d2a0ff1a5c53abe"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga5f4b424d6761de4d32aa16ff6803bac9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga5f4b424d6761de4d32aa16ff6803bac9">apr_hash_make</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *pool)</td></tr>
<tr class="separator:ga5f4b424d6761de4d32aa16ff6803bac9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga27f40acb206f1821a783ddcb71bc8971"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga27f40acb206f1821a783ddcb71bc8971">apr_hash_make_custom</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *pool, <a class="el" href="group__apr__hash.html#ga0bf5622266af13a2489c907a101cb156">apr_hashfunc_t</a> hash_func)</td></tr>
<tr class="separator:ga27f40acb206f1821a783ddcb71bc8971"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gafa0b1b9fb91b2249ee3bcb645d93e148"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#gafa0b1b9fb91b2249ee3bcb645d93e148">apr_hash_copy</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *pool, const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *h)</td></tr>
<tr class="separator:gafa0b1b9fb91b2249ee3bcb645d93e148"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga456beb139bc548728b49c09c2f89b93c"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga456beb139bc548728b49c09c2f89b93c">apr_hash_set</a> (<a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *ht, const void *key, apr_ssize_t klen, const void *val)</td></tr>
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<tr class="memitem:ga05e526dad8afaebe14caea90d906d6ec"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga05e526dad8afaebe14caea90d906d6ec">apr_hash_get</a> (<a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *ht, const void *key, apr_ssize_t klen)</td></tr>
<tr class="separator:ga05e526dad8afaebe14caea90d906d6ec"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga640005a4ba64a5db039b0b43a8ad4898"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga640005a4ba64a5db039b0b43a8ad4898">apr_hash_first</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *ht)</td></tr>
<tr class="separator:ga640005a4ba64a5db039b0b43a8ad4898"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9d7b9198555659e9abac4e3028ccce00"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga9d7b9198555659e9abac4e3028ccce00">apr_hash_next</a> (<a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> *hi)</td></tr>
<tr class="separator:ga9d7b9198555659e9abac4e3028ccce00"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad90e5b895397c2c535e32b3e44a75b3f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#gad90e5b895397c2c535e32b3e44a75b3f">apr_hash_this</a> (<a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> *hi, const void **key, apr_ssize_t *klen, void **val)</td></tr>
<tr class="separator:gad90e5b895397c2c535e32b3e44a75b3f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga835bd602131de7d40cbf8abd4e0f9f6c"><td class="memItemLeft" align="right" valign="top">const void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga835bd602131de7d40cbf8abd4e0f9f6c">apr_hash_this_key</a> (<a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> *hi)</td></tr>
<tr class="separator:ga835bd602131de7d40cbf8abd4e0f9f6c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae49a862095e9a3ca96603faa69493736"><td class="memItemLeft" align="right" valign="top">apr_ssize_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#gae49a862095e9a3ca96603faa69493736">apr_hash_this_key_len</a> (<a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> *hi)</td></tr>
<tr class="separator:gae49a862095e9a3ca96603faa69493736"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaebf56aa7585e6fa18b6ff9563c71914b"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#gaebf56aa7585e6fa18b6ff9563c71914b">apr_hash_this_val</a> (<a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> *hi)</td></tr>
<tr class="separator:gaebf56aa7585e6fa18b6ff9563c71914b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga4e44efa9ef043c1bb8a4abc5edcfda2c"><td class="memItemLeft" align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga4e44efa9ef043c1bb8a4abc5edcfda2c">apr_hash_count</a> (<a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *ht)</td></tr>
<tr class="separator:ga4e44efa9ef043c1bb8a4abc5edcfda2c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga06fb1b9ecff1a15ee41ff02db74264e4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga06fb1b9ecff1a15ee41ff02db74264e4">apr_hash_clear</a> (<a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *ht)</td></tr>
<tr class="separator:ga06fb1b9ecff1a15ee41ff02db74264e4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga2f68646a64bad44efcbf3457af581fdb"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga2f68646a64bad44efcbf3457af581fdb">apr_hash_overlay</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *overlay, const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *base)</td></tr>
<tr class="separator:ga2f68646a64bad44efcbf3457af581fdb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa954266cd16a55f7f384ab0a9c4ff9f1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#gaa954266cd16a55f7f384ab0a9c4ff9f1">apr_hash_merge</a> (<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *h1, const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *h2, void *(*merger)(<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, const void *key, apr_ssize_t klen, const void *h1_val, const void *h2_val, const void *data), const void *data)</td></tr>
<tr class="separator:gaa954266cd16a55f7f384ab0a9c4ff9f1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga3f3bac64e281d9e7eb9fed6101031394"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga3f3bac64e281d9e7eb9fed6101031394">apr_hash_do</a> (<a class="el" href="group__apr__hash.html#gafaf9b4435ab207b7708533cb8544face">apr_hash_do_callback_fn_t</a> *comp, void *rec, const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *ht)</td></tr>
<tr class="separator:ga3f3bac64e281d9e7eb9fed6101031394"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga6c170fee4d679928d381cd61c559c105"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__hash.html#ga6c170fee4d679928d381cd61c559c105">apr_hash_pool_get</a> (const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *thehash)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="ga3ba32541f2717b394000f87f38c7e12d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga3ba32541f2717b394000f87f38c7e12d">◆ </a></span>APR_HASH_KEY_STRING</h2>
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<td class="memname">#define APR_HASH_KEY_STRING   (-1)</td>
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<p>When passing a key to apr_hash_set or apr_hash_get, this value can be passed to indicate a string-valued key, and have apr_hash compute the length automatically.</p>
<dl class="section remark"><dt>Remarks</dt><dd>apr_hash will use strlen(key) for the length. The NUL terminator is not included in the hash value (why throw a constant in?). Since the hash table merely references the provided key (rather than copying it), <a class="el" href="group__apr__hash.html#gad90e5b895397c2c535e32b3e44a75b3f">apr_hash_this()</a> will return the NUL-term'd key. </dd></dl>
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<h2 class="groupheader">Typedef Documentation</h2>
<a id="gafaf9b4435ab207b7708533cb8544face"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gafaf9b4435ab207b7708533cb8544face">◆ </a></span>apr_hash_do_callback_fn_t</h2>
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<td class="memname">typedef int() apr_hash_do_callback_fn_t(void *rec, const void *key, apr_ssize_t klen, const void *value)</td>
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<p>Declaration prototype for the iterator callback function of <a class="el" href="group__apr__hash.html#ga3f3bac64e281d9e7eb9fed6101031394">apr_hash_do()</a>.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">rec</td><td>The data passed as the first argument to apr_hash_[v]do() </td></tr>
<tr><td class="paramname">key</td><td>The key from this iteration of the hash table </td></tr>
<tr><td class="paramname">klen</td><td>The key length from this iteration of the hash table </td></tr>
<tr><td class="paramname">value</td><td>The value from this iteration of the hash table </td></tr>
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</dd>
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<dl class="section remark"><dt>Remarks</dt><dd>Iteration continues while this callback function returns non-zero. To export the callback function for <a class="el" href="group__apr__hash.html#ga3f3bac64e281d9e7eb9fed6101031394">apr_hash_do()</a> it must be declared in the _NONSTD convention. </dd></dl>
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<a id="ga3b3d353989f6cea4535630634be147f7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga3b3d353989f6cea4535630634be147f7">◆ </a></span>apr_hash_index_t</h2>
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<td class="memname">typedef struct <a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> <a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a></td>
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<p>Abstract type for scanning hash tables. </p>
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<a id="ga72ec09b8bde6d874c36bd49df915fff6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga72ec09b8bde6d874c36bd49df915fff6">◆ </a></span>apr_hash_t</h2>
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<td class="memname">typedef struct <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a></td>
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<p>Abstract type for hash tables. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga0bf5622266af13a2489c907a101cb156">◆ </a></span>apr_hashfunc_t</h2>
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<td class="memname">typedef unsigned int(* apr_hashfunc_t) (const char *key, apr_ssize_t *klen)</td>
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<p>Callback functions for calculating hash values. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>The key. </td></tr>
<tr><td class="paramname">klen</td><td>The length of the key, or APR_HASH_KEY_STRING to use the string length. If APR_HASH_KEY_STRING then returns the actual key length. </td></tr>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga06fb1b9ecff1a15ee41ff02db74264e4">◆ </a></span>apr_hash_clear()</h2>
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<td class="memname">void apr_hash_clear </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>ht</em></td><td>)</td>
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<p>Clear any key/value pairs in the hash table. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">ht</td><td>The hash table </td></tr>
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</dd>
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<h2 class="memtitle"><span class="permalink"><a href="#gafa0b1b9fb91b2249ee3bcb645d93e148">◆ </a></span>apr_hash_copy()</h2>
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<td class="memname"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a>* apr_hash_copy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>pool</em>, </td>
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<td class="paramtype">const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>h</em> </td>
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<p>Make a copy of a hash table </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pool</td><td>The pool from which to allocate the new hash table </td></tr>
<tr><td class="paramname">h</td><td>The hash table to clone </td></tr>
</table>
</dd>
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<dl class="section return"><dt>Returns</dt><dd>The hash table just created </dd></dl>
<dl class="section remark"><dt>Remarks</dt><dd>Makes a shallow copy </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga4e44efa9ef043c1bb8a4abc5edcfda2c">◆ </a></span>apr_hash_count()</h2>
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<td class="memname">unsigned int apr_hash_count </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>ht</em></td><td>)</td>
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<p>Get the number of key/value pairs in the hash table. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ht</td><td>The hash table </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The number of key/value pairs in the hash table. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga3f3bac64e281d9e7eb9fed6101031394">◆ </a></span>apr_hash_do()</h2>
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<td class="memname">int apr_hash_do </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#gafaf9b4435ab207b7708533cb8544face">apr_hash_do_callback_fn_t</a> * </td>
<td class="paramname"><em>comp</em>, </td>
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<td class="paramtype">void * </td>
<td class="paramname"><em>rec</em>, </td>
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<td class="paramtype">const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>ht</em> </td>
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<p>Iterate over a hash table running the provided function once for every element in the hash table. The </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">comp</td><td>function will be invoked for every element in the hash table.</td></tr>
<tr><td class="paramname">comp</td><td>The function to run </td></tr>
<tr><td class="paramname">rec</td><td>The data to pass as the first argument to the function </td></tr>
<tr><td class="paramname">ht</td><td>The hash table to iterate over </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>FALSE if one of the comp() iterations returned zero; TRUE if all iterations returned non-zero </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="group__apr__hash.html#gafaf9b4435ab207b7708533cb8544face">apr_hash_do_callback_fn_t</a> </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga640005a4ba64a5db039b0b43a8ad4898">◆ </a></span>apr_hash_first()</h2>
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<td class="memname"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a>* apr_hash_first </td>
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<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
<td class="paramname"><em>p</em>, </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>ht</em> </td>
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<p>Start iterating over the entries in a hash table. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>The pool to allocate the apr_hash_index_t iterator. If this pool is NULL, then an internal, non-thread-safe iterator is used. </td></tr>
<tr><td class="paramname">ht</td><td>The hash table </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The iteration state </dd></dl>
<dl class="section remark"><dt>Remarks</dt><dd>There is no restriction on adding or deleting hash entries during an iteration (although the results may be unpredictable unless all you do is delete the current entry) and multiple iterations can be in progress at the same time.</dd></dl>
<dl class="section user"><dt>Example:</dt><dd></dd></dl>
<div class="fragment"><div class="line"><span class="keywordtype">int</span> sum_values(<a class="code" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, <a class="code" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> *ht)</div><div class="line">{</div><div class="line"> <a class="code" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> *hi;</div><div class="line"> <span class="keywordtype">void</span> *val;</div><div class="line"> <span class="keywordtype">int</span> sum = 0;</div><div class="line"> <span class="keywordflow">for</span> (hi = <a class="code" href="group__apr__hash.html#ga640005a4ba64a5db039b0b43a8ad4898">apr_hash_first</a>(p, ht); hi; hi = <a class="code" href="group__apr__hash.html#ga9d7b9198555659e9abac4e3028ccce00">apr_hash_next</a>(hi)) {</div><div class="line"> <a class="code" href="group__apr__hash.html#gad90e5b895397c2c535e32b3e44a75b3f">apr_hash_this</a>(hi, NULL, NULL, &val);</div><div class="line"> sum += *(<span class="keywordtype">int</span> *)val;</div><div class="line"> }</div><div class="line"> <span class="keywordflow">return</span> sum;</div><div class="line">}</div></div><!-- fragment -->
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<h2 class="memtitle"><span class="permalink"><a href="#ga05e526dad8afaebe14caea90d906d6ec">◆ </a></span>apr_hash_get()</h2>
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<td class="memname">void* apr_hash_get </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>ht</em>, </td>
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<td class="paramtype">const void * </td>
<td class="paramname"><em>key</em>, </td>
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<td class="paramtype">apr_ssize_t </td>
<td class="paramname"><em>klen</em> </td>
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<p>Look up the value associated with a key in a hash table. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">ht</td><td>The hash table </td></tr>
<tr><td class="paramname">key</td><td>Pointer to the key </td></tr>
<tr><td class="paramname">klen</td><td>Length of the key. Can be APR_HASH_KEY_STRING to use the string length. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Returns NULL if the key is not present. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5f4b424d6761de4d32aa16ff6803bac9">◆ </a></span>apr_hash_make()</h2>
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<td class="memname"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a>* apr_hash_make </td>
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<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
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<p>Create a hash table. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">pool</td><td>The pool to allocate the hash table out of </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The hash table just created </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga27f40acb206f1821a783ddcb71bc8971">◆ </a></span>apr_hash_make_custom()</h2>
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<td class="memname"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a>* apr_hash_make_custom </td>
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<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#ga0bf5622266af13a2489c907a101cb156">apr_hashfunc_t</a> </td>
<td class="paramname"><em>hash_func</em> </td>
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<p>Create a hash table with a custom hash function </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">pool</td><td>The pool to allocate the hash table out of </td></tr>
<tr><td class="paramname">hash_func</td><td>A custom hash function. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The hash table just created </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#gaa954266cd16a55f7f384ab0a9c4ff9f1">◆ </a></span>apr_hash_merge()</h2>
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<td class="memname"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a>* apr_hash_merge </td>
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<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
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<td class="paramtype">const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>h1</em>, </td>
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<td class="paramtype">const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>h2</em>, </td>
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<td class="paramtype">void *(*)(<a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, const void *key, apr_ssize_t klen, const void *h1_val, const void *h2_val, const void *data) </td>
<td class="paramname"><em>merger</em>, </td>
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<td class="paramtype">const void * </td>
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<p>Merge two hash tables into one new hash table. If the same key is present in both tables, call the supplied merge function to produce a merged value for the key in the new table. Both hash tables must use the same hash function. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">p</td><td>The pool to use for the new hash table </td></tr>
<tr><td class="paramname">h1</td><td>The first of the tables to merge </td></tr>
<tr><td class="paramname">h2</td><td>The second of the tables to merge </td></tr>
<tr><td class="paramname">merger</td><td>A callback function to merge values, or NULL to make values from h1 override values from h2 (same semantics as <a class="el" href="group__apr__hash.html#ga2f68646a64bad44efcbf3457af581fdb">apr_hash_overlay()</a>) </td></tr>
<tr><td class="paramname">data</td><td>Client data to pass to the merger function </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>A new hash table containing all of the data from the two passed in </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga9d7b9198555659e9abac4e3028ccce00">◆ </a></span>apr_hash_next()</h2>
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<td class="memname"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a>* apr_hash_next </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> * </td>
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<p>Continue iterating over the entries in a hash table. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">hi</td><td>The iteration state </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>a pointer to the updated iteration state. NULL if there are no more entries. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga2f68646a64bad44efcbf3457af581fdb">◆ </a></span>apr_hash_overlay()</h2>
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<td class="memname"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a>* apr_hash_overlay </td>
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<td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td>
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<td class="paramtype">const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
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<td class="paramtype">const <a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
<td class="paramname"><em>base</em> </td>
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<p>Merge two hash tables into one new hash table. The values of the overlay hash override the values of the base if both have the same key. Both hash tables must use the same hash function. </p><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">p</td><td>The pool to use for the new hash table </td></tr>
<tr><td class="paramname">overlay</td><td>The table to add to the initial table </td></tr>
<tr><td class="paramname">base</td><td>The table that represents the initial values of the new table </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>A new hash table containing all of the data from the two passed in </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga6c170fee4d679928d381cd61c559c105">◆ </a></span>apr_hash_pool_get()</h2>
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<td class="memname"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a>* apr_hash_pool_get </td>
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<p>Get a pointer to the pool which the hash table was created in </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga456beb139bc548728b49c09c2f89b93c">◆ </a></span>apr_hash_set()</h2>
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<td class="memname">void apr_hash_set </td>
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<td class="paramtype"><a class="el" href="group__apr__hash.html#ga72ec09b8bde6d874c36bd49df915fff6">apr_hash_t</a> * </td>
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<td class="paramtype">const void * </td>
<td class="paramname"><em>key</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_ssize_t </td>
<td class="paramname"><em>klen</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void * </td>
<td class="paramname"><em>val</em> </td>
</tr>
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<td>)</td>
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<p>Associate a value with a key in a hash table. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ht</td><td>The hash table </td></tr>
<tr><td class="paramname">key</td><td>Pointer to the key </td></tr>
<tr><td class="paramname">klen</td><td>Length of the key. Can be APR_HASH_KEY_STRING to use the string length. </td></tr>
<tr><td class="paramname">val</td><td>Value to associate with the key </td></tr>
</table>
</dd>
</dl>
<dl class="section remark"><dt>Remarks</dt><dd>If the value is NULL the hash entry is deleted. </dd></dl>
</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#gad90e5b895397c2c535e32b3e44a75b3f">◆ </a></span>apr_hash_this()</h2>
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<td class="memname">void apr_hash_this </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> * </td>
<td class="paramname"><em>hi</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void ** </td>
<td class="paramname"><em>key</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_ssize_t * </td>
<td class="paramname"><em>klen</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void ** </td>
<td class="paramname"><em>val</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Get the current entry's details from the iteration state. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">hi</td><td>The iteration state </td></tr>
<tr><td class="paramname">key</td><td>Return pointer for the pointer to the key. </td></tr>
<tr><td class="paramname">klen</td><td>Return pointer for the key length. </td></tr>
<tr><td class="paramname">val</td><td>Return pointer for the associated value. </td></tr>
</table>
</dd>
</dl>
<dl class="section remark"><dt>Remarks</dt><dd>The return pointers should point to a variable that will be set to the corresponding data, or they may be NULL if the data isn't interesting. </dd></dl>
</div>
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<a id="ga835bd602131de7d40cbf8abd4e0f9f6c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga835bd602131de7d40cbf8abd4e0f9f6c">◆ </a></span>apr_hash_this_key()</h2>
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<td class="memname">const void* apr_hash_this_key </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> * </td>
<td class="paramname"><em>hi</em></td><td>)</td>
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<p>Get the current entry's key from the iteration state. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">hi</td><td>The iteration state </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The pointer to the key </dd></dl>
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<a id="gae49a862095e9a3ca96603faa69493736"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gae49a862095e9a3ca96603faa69493736">◆ </a></span>apr_hash_this_key_len()</h2>
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<td class="memname">apr_ssize_t apr_hash_this_key_len </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> * </td>
<td class="paramname"><em>hi</em></td><td>)</td>
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<p>Get the current entry's key length from the iteration state. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">hi</td><td>The iteration state </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The key length </dd></dl>
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<a id="gaebf56aa7585e6fa18b6ff9563c71914b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaebf56aa7585e6fa18b6ff9563c71914b">◆ </a></span>apr_hash_this_val()</h2>
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<td class="memname">void* apr_hash_this_val </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__apr__hash.html#ga3b3d353989f6cea4535630634be147f7">apr_hash_index_t</a> * </td>
<td class="paramname"><em>hi</em></td><td>)</td>
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<p>Get the current entry's value from the iteration state. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">hi</td><td>The iteration state </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The pointer to the value </dd></dl>
</div>
</div>
<a id="ga8baa6e9d9d6c2c496d2a0ff1a5c53abe"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga8baa6e9d9d6c2c496d2a0ff1a5c53abe">◆ </a></span>apr_hashfunc_default()</h2>
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<td class="memname">unsigned int apr_hashfunc_default </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>key</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">apr_ssize_t * </td>
<td class="paramname"><em>klen</em> </td>
</tr>
<tr>
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<td>)</td>
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<p>The default hash function. </p>
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