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<div id="projectname">Jack2
 <span id="projectnumber">1.9.9</span>
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<a href="#typedef-members">Typedefs</a> |
<a href="#func-members">Functions</a> </div>
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<div class="title">Creating and managing client threads</div> </div>
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Typedefs</h2></td></tr>
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typedef int(* </td><td class="memItemRight" valign="bottom"><b>jack_thread_creator_t</b> )(pthread_t *, const pthread_attr_t *, void *(*function)(void *), void *arg)</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga4ee2fcbb266618d66a2cf354d8c54359"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#ga4ee2fcbb266618d66a2cf354d8c54359">jack_client_real_time_priority</a> (jack_client_t *) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
<tr class="memitem:gaa266166c958e1b745ce48ef7ca89890f"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#gaa266166c958e1b745ce48ef7ca89890f">jack_client_max_real_time_priority</a> (jack_client_t *) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
<tr class="memitem:gaec301b7cb1dcd39d7fc88fa9f769dab8"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#gaec301b7cb1dcd39d7fc88fa9f769dab8">jack_acquire_real_time_scheduling</a> (jack_native_thread_t thread, int priority) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
<tr class="memitem:ga522094adfc39ec4770d8e82bd601e365"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#ga522094adfc39ec4770d8e82bd601e365">jack_client_create_thread</a> (jack_client_t *client, jack_native_thread_t *thread, int priority, int realtime, void *(*start_routine)(void *), void *arg) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
<tr class="memitem:ga0d75ca78f4088f515f1befc108f3f2e7"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#ga0d75ca78f4088f515f1befc108f3f2e7">jack_drop_real_time_scheduling</a> (jack_native_thread_t thread) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
<tr class="memitem:ga2a9f33ed2464d4b110a27c9c35792b24"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#ga2a9f33ed2464d4b110a27c9c35792b24">jack_client_stop_thread</a> (jack_client_t *client, jack_native_thread_t thread) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
<tr class="memitem:gad170c52942d07538dc0b3d4886405526"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#gad170c52942d07538dc0b3d4886405526">jack_client_kill_thread</a> (jack_client_t *client, jack_native_thread_t thread) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
<tr class="memitem:ga157ab0ade60e266ffd26ddffdb5545af"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ClientThreads.html#ga157ab0ade60e266ffd26ddffdb5545af">jack_set_thread_creator</a> (jack_thread_creator_t creator) JACK_OPTIONAL_WEAK_EXPORT</td></tr>
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<a name="details" id="details"></a><h2>Detailed Description</h2>
<h2>Function Documentation</h2>
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<td class="memname">int jack_client_real_time_priority </td>
<td>(</td>
<td class="paramtype">jack_client_t * </td>
<td class="paramname"></td><td>)</td>
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<dl class="section return"><dt>Returns</dt><dd>if JACK is running with realtime scheduling, this returns the priority that any JACK-created client threads will run at. Otherwise returns -1. </dd></dl>
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<td class="memname">int jack_client_max_real_time_priority </td>
<td>(</td>
<td class="paramtype">jack_client_t * </td>
<td class="paramname"></td><td>)</td>
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<dl class="section return"><dt>Returns</dt><dd>if JACK is running with realtime scheduling, this returns the maximum priority that a JACK client thread should use if the thread is subject to realtime scheduling. Otherwise returns -1. </dd></dl>
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<td class="memname">int jack_acquire_real_time_scheduling </td>
<td>(</td>
<td class="paramtype">jack_native_thread_t </td>
<td class="paramname"><em>thread</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>priority</em> </td>
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<td>)</td>
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<p>Attempt to enable realtime scheduling for a thread. On some systems that may require special privileges.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">thread</td><td>POSIX thread ID. </td></tr>
<tr><td class="paramname">priority</td><td>requested thread priority.</td></tr>
</table>
</dd>
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<dl class="section return"><dt>Returns</dt><dd>0, if successful; EPERM, if the calling process lacks required realtime privileges; otherwise some other error number. </dd></dl>
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<td class="memname">int jack_client_create_thread </td>
<td>(</td>
<td class="paramtype">jack_client_t * </td>
<td class="paramname"><em>client</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">jack_native_thread_t * </td>
<td class="paramname"><em>thread</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>priority</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>realtime</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void *(*)(void *) </td>
<td class="paramname"><em>start_routine</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>arg</em> </td>
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<td>)</td>
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<p>Create a thread for JACK or one of its clients. The thread is created executing <em>start_routine</em> with <em>arg</em> as its sole argument.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">client</td><td>the JACK client for whom the thread is being created. May be NULL if the client is being created within the JACK server. </td></tr>
<tr><td class="paramname">thread</td><td>place to return POSIX thread ID. </td></tr>
<tr><td class="paramname">priority</td><td>thread priority, if realtime. </td></tr>
<tr><td class="paramname">realtime</td><td>true for the thread to use realtime scheduling. On some systems that may require special privileges. </td></tr>
<tr><td class="paramname">start_routine</td><td>function the thread calls when it starts. </td></tr>
<tr><td class="paramname">arg</td><td>parameter passed to the <em>start_routine</em>.</td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0, if successful; otherwise some error number. </dd></dl>
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<td class="memname">int jack_drop_real_time_scheduling </td>
<td>(</td>
<td class="paramtype">jack_native_thread_t </td>
<td class="paramname"><em>thread</em></td><td>)</td>
<td></td>
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<p>Drop realtime scheduling for a thread.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">thread</td><td>POSIX thread ID.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0, if successful; otherwise an error number. </dd></dl>
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<td class="memname">int jack_client_stop_thread </td>
<td>(</td>
<td class="paramtype">jack_client_t * </td>
<td class="paramname"><em>client</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">jack_native_thread_t </td>
<td class="paramname"><em>thread</em> </td>
</tr>
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<td></td>
<td>)</td>
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<p>Stop the thread, waiting for the thread handler to terminate.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">thread</td><td>POSIX thread ID.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0, if successful; otherwise an error number. </dd></dl>
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<td class="memname">int jack_client_kill_thread </td>
<td>(</td>
<td class="paramtype">jack_client_t * </td>
<td class="paramname"><em>client</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">jack_native_thread_t </td>
<td class="paramname"><em>thread</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Kill the thread.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">thread</td><td>POSIX thread ID.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0, if successful; otherwise an error number. </dd></dl>
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<td class="memname">void jack_set_thread_creator </td>
<td>(</td>
<td class="paramtype">jack_thread_creator_t </td>
<td class="paramname"><em>creator</em></td><td>)</td>
<td></td>
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<p>This function can be used in very very specialized cases where it is necessary that client threads created by JACK are created by something other than pthread_create(). After it is used, any threads that JACK needs for the client will will be created by calling the function passed to this function.</p>
<p>No normal application/client should consider calling this. The specific case for which it was created involves running win32/x86 plugins under Wine on Linux, where it is necessary that all threads that might call win32 functions are known to Wine.</p>
<p>Set it to NULL to restore thread creation function.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">creator</td><td>a function that creates a new thread </td></tr>
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</dd>
</dl>
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