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<p>APR Thread Pool Library.
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<div class="textblock"><code>#include "apu.h"</code><br />
<code>#include "apr_thread_proc.h"</code><br />
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Include dependency graph for apr_thread_pool.h:</div>
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Macros</h2></td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>APR_THREAD_TASK_PRIORITY_LOWEST</b>   0</td></tr>
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<tr class="memitem:ga19879c994e9a71e9954e580a179b62c1"><td class="memItemLeft" align="right" valign="top">
#define </td><td class="memItemRight" valign="bottom"><b>APR_THREAD_TASK_PRIORITY_LOW</b>   63</td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>APR_THREAD_TASK_PRIORITY_NORMAL</b>   127</td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>APR_THREAD_TASK_PRIORITY_HIGH</b>   191</td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>APR_THREAD_TASK_PRIORITY_HIGHEST</b>   255</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:gab31b68a03a0d5eec3e1879c253d3b620"><td class="memItemLeft" align="right" valign="top">typedef struct apr_thread_pool </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a></td></tr>
<tr class="separator:gab31b68a03a0d5eec3e1879c253d3b620"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga9c4351f2f93d223c159c1f8e5481830e"><td class="memItemLeft" align="right" valign="top">apr_status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga9c4351f2f93d223c159c1f8e5481830e">apr_thread_pool_create</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> **me, apr_size_t init_threads, apr_size_t max_threads, apr_pool_t *pool)</td></tr>
<tr class="separator:ga9c4351f2f93d223c159c1f8e5481830e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab06b4fdfc684c88781abf201d53a44eb"><td class="memItemLeft" align="right" valign="top">apr_status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gab06b4fdfc684c88781abf201d53a44eb">apr_thread_pool_destroy</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gab06b4fdfc684c88781abf201d53a44eb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gad66fb92679a8f456ff8e8ea1629eb041"><td class="memItemLeft" align="right" valign="top">apr_status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gad66fb92679a8f456ff8e8ea1629eb041">apr_thread_pool_push</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, apr_thread_start_t func, void *param, apr_byte_t priority, void *owner)</td></tr>
<tr class="separator:gad66fb92679a8f456ff8e8ea1629eb041"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa79df50c650442b8d39e169f4e422d3b"><td class="memItemLeft" align="right" valign="top">apr_status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gaa79df50c650442b8d39e169f4e422d3b">apr_thread_pool_schedule</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, apr_thread_start_t func, void *param, apr_interval_time_t time, void *owner)</td></tr>
<tr class="separator:gaa79df50c650442b8d39e169f4e422d3b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9acb6218820184f0617eecf56f0d3d84"><td class="memItemLeft" align="right" valign="top">apr_status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga9acb6218820184f0617eecf56f0d3d84">apr_thread_pool_top</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, apr_thread_start_t func, void *param, apr_byte_t priority, void *owner)</td></tr>
<tr class="separator:ga9acb6218820184f0617eecf56f0d3d84"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaee3d7332cf2591f42472e8be0bcbff87"><td class="memItemLeft" align="right" valign="top">apr_status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gaee3d7332cf2591f42472e8be0bcbff87">apr_thread_pool_tasks_cancel</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, void *owner)</td></tr>
<tr class="separator:gaee3d7332cf2591f42472e8be0bcbff87"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga4f628cbec0365bb39be715a3c7ff0ec3"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga4f628cbec0365bb39be715a3c7ff0ec3">apr_thread_pool_tasks_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:ga4f628cbec0365bb39be715a3c7ff0ec3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gac0324b95f6b61dbfb184cbe84c541b42"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gac0324b95f6b61dbfb184cbe84c541b42">apr_thread_pool_scheduled_tasks_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gac0324b95f6b61dbfb184cbe84c541b42"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9a2642a5a61df9560da438e818d5fad3"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga9a2642a5a61df9560da438e818d5fad3">apr_thread_pool_threads_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:ga9a2642a5a61df9560da438e818d5fad3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaf839cda931928964f450e3a17d153b24"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gaf839cda931928964f450e3a17d153b24">apr_thread_pool_busy_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gaf839cda931928964f450e3a17d153b24"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae6c5b87d1fee7150f74baa1008cb00c0"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gae6c5b87d1fee7150f74baa1008cb00c0">apr_thread_pool_idle_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gae6c5b87d1fee7150f74baa1008cb00c0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga07c5e4dca589ff024e9adfc8f818c481"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga07c5e4dca589ff024e9adfc8f818c481">apr_thread_pool_idle_max_set</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, apr_size_t cnt)</td></tr>
<tr class="separator:ga07c5e4dca589ff024e9adfc8f818c481"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaab5c9c8afc46793ea5c413edfc9ef46e"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gaab5c9c8afc46793ea5c413edfc9ef46e">apr_thread_pool_tasks_run_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gaab5c9c8afc46793ea5c413edfc9ef46e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga5eda07fb7fac1b4c4165137f34c5c31c"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga5eda07fb7fac1b4c4165137f34c5c31c">apr_thread_pool_tasks_high_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:ga5eda07fb7fac1b4c4165137f34c5c31c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab6dcdaa6129caf35fa370e694a67ff08"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gab6dcdaa6129caf35fa370e694a67ff08">apr_thread_pool_threads_high_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gab6dcdaa6129caf35fa370e694a67ff08"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gafcf0a761a77b2a27fc043d650606c122"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gafcf0a761a77b2a27fc043d650606c122">apr_thread_pool_threads_idle_timeout_count</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gafcf0a761a77b2a27fc043d650606c122"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga6dd7fdcaac5cb2848aecd2ee1426d41e"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga6dd7fdcaac5cb2848aecd2ee1426d41e">apr_thread_pool_idle_max_get</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:ga6dd7fdcaac5cb2848aecd2ee1426d41e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaa352b6337b31ebab796b604240a907e9"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gaa352b6337b31ebab796b604240a907e9">apr_thread_pool_thread_max_set</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, apr_size_t cnt)</td></tr>
<tr class="separator:gaa352b6337b31ebab796b604240a907e9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga382b90c482d39184b2a80157f64166ec"><td class="memItemLeft" align="right" valign="top">apr_interval_time_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga382b90c482d39184b2a80157f64166ec">apr_thread_pool_idle_wait_set</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, apr_interval_time_t timeout)</td></tr>
<tr class="separator:ga382b90c482d39184b2a80157f64166ec"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga6ef255c2d556fa757e9b78c2745c9bac"><td class="memItemLeft" align="right" valign="top">apr_interval_time_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga6ef255c2d556fa757e9b78c2745c9bac">apr_thread_pool_idle_wait_get</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:ga6ef255c2d556fa757e9b78c2745c9bac"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaca755ea05976c5e1b782dcf40a1ef443"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gaca755ea05976c5e1b782dcf40a1ef443">apr_thread_pool_thread_max_get</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:gaca755ea05976c5e1b782dcf40a1ef443"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga1c35f1bd809dde4300f4a3f77026f446"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga1c35f1bd809dde4300f4a3f77026f446">apr_thread_pool_threshold_set</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me, apr_size_t val)</td></tr>
<tr class="separator:ga1c35f1bd809dde4300f4a3f77026f446"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga38f4ad8e384cde0e9d32867031c7a935"><td class="memItemLeft" align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#ga38f4ad8e384cde0e9d32867031c7a935">apr_thread_pool_threshold_get</a> (<a class="el" href="group___a_p_r___util___t_p.html#gab31b68a03a0d5eec3e1879c253d3b620">apr_thread_pool_t</a> *me)</td></tr>
<tr class="separator:ga38f4ad8e384cde0e9d32867031c7a935"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaefbaa0f765567e8e5a79adaaf346755f"><td class="memItemLeft" align="right" valign="top">apr_status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___a_p_r___util___t_p.html#gaefbaa0f765567e8e5a79adaaf346755f">apr_thread_pool_task_owner_get</a> (apr_thread_t *thd, void **owner)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>APR Thread Pool Library. </p>
<dl class="section remark"><dt>Remarks</dt><dd>This library implements a thread pool using apr_thread_t. A thread pool is a set of threads that can be created in advance or on demand until a maximum number. When a task is scheduled, the thread pool will find an idle thread to handle the task. In case all existing threads are busy and the number of tasks in the queue is higher than the adjustable threshold, the pool will try to create a new thread to serve the task if the maximum number has not been reached. Otherwise, the task will be put into a queue based on priority, which can be valued from 0 to 255, with higher values being served first. If there are tasks with the same priority, the new task might be put at the top or at the bottom - it depends on which function is used to put the task.</dd>
<dd>
There may be the case where the thread pool can use up to the maximum number of threads at peak load, but having those threads idle afterwards. A maximum number of idle threads can be set so that the extra idling threads will be terminated to save system resources. </dd></dl>
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