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Jagannadha Sutradharudu Teki 2c8f92039d embeddesw: Add initial code support 
Added initial support Xilinx Embedded Software.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2014-06-24 16:45:01 +05:30

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<title>2014.1_doc: mem.c File Reference</title>
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<a class="el" href="dir_U_3A_2Fdoxygen_5Fpublish_2Fsources_2Fbsp_2Fxilkernel_5Fv6_5F0_2Fsrc_2Fsrc_2F.html">src</a>&nbsp;&raquo&nbsp;<a class="el" href="dir_U_3A_2Fdoxygen_5Fpublish_2Fsources_2Fbsp_2Fxilkernel_5Fv6_5F0_2Fsrc_2Fsrc_2Fsys_2F.html">sys</a></div>
<h1>mem.c File Reference</h1><code>#include &lt;stdio.h&gt;</code><br>
<code>#include &lt;<a class="el" href="os__config_8h.html">os_config.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="config__cparam_8h.html">config/config_cparam.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="config__param_8h.html">config/config_param.h</a>&gt;</code><br>
<code>#include &lt;sys/arch.h&gt;</code><br>
<code>#include &lt;<a class="el" href="process_8h.html">sys/process.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="mem_8h.html">sys/mem.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="init_8h.html">sys/init.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="shm_8h.html">sys/shm.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="kmsg_8h.html">sys/kmsg.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="kpthread_8h.html">sys/kpthread.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="ksched_8h.html">sys/ksched.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="decls_8h.html">sys/decls.h</a>&gt;</code><br>
<code>#include &lt;<a class="el" href="bufmalloc_8h.html">sys/bufmalloc.h</a>&gt;</code><br>
<code>#include &lt;errno.h&gt;</code><br>
<table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mem_8c.html#2474f08da78e9873ce0a65210c5bd2b6">alloc_pidq_mem</a> (queuep queue, unsigned int qtype, unsigned int qno)</td></tr>
<tr><td colspan="2"><br><h2>Variables</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">pid_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="mem_8c.html#e20be355b36c911871b9d489b30b93be">pid_queue_mem</a> [PID_QUEUE_MSIZE]</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
This contains the Memory allocation routines.<ul>
<li>All the memory initialization routines for various system modules is defined here. The memory for all the modules are allocated statically, the size of which can be configured by the user. This can be specified in structures defined in sys/init.c. Based on this the total memory requirements for each module is calculated.</li><li>This also contains routines that allocate thread context and buffer management. </li></ul>
<hr><h2>Function Documentation</h2>
<a class="anchor" name="2474f08da78e9873ce0a65210c5bd2b6"></a><!-- doxytag: member="mem.c::alloc_pidq_mem" ref="2474f08da78e9873ce0a65210c5bd2b6" args="(queuep queue, unsigned int qtype, unsigned int qno)" --><p>
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<td class="md" nowrap valign="top">void alloc_pidq_mem </td>
<td class="md" valign="top">(&nbsp;</td>
<td class="md" nowrap valign="top">queuep&nbsp;</td>
<td class="mdname" nowrap> <em>queue</em>, </td>
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<td class="md" nowrap>unsigned int&nbsp;</td>
<td class="mdname" nowrap> <em>qtype</em>, </td>
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<td class="md" nowrap>unsigned int&nbsp;</td>
<td class="mdname" nowrap> <em>qno</em></td>
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<td class="md">)&nbsp;</td>
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Allocate memory to the process ID queue's.<ul>
<li>This includes the Ready_Q and Semaphore_Q. Initial memory is allocated for Ready queue, followed by the semaphore queue. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>queue</em>&nbsp;</td><td>is the queue of PIDs</td></tr>
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qtype is the queue type. Can be READY_Q or SEMA_Q<ul>
<li>qno is the Queue number. (eg) There are N_PRIO number of Ready Queue. The qno denotes this number. Memory for queues is allocated sequentially. <dl compact><dt><b>Returns:</b></dt><dd><ul>
<li>None </li></ul>
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<dl compact><dt><b>Note:</b></dt><dd><ul>
<li>SEMA_Q is valid only if CONFIG_SEMA is defined. </li></ul>
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</li></ul>
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<hr><h2>Variable Documentation</h2>
<a class="anchor" name="e20be355b36c911871b9d489b30b93be"></a><!-- doxytag: member="mem.c::pid_queue_mem" ref="e20be355b36c911871b9d489b30b93be" args="[PID_QUEUE_MSIZE]" --><p>
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<td class="md" nowrap valign="top">pid_t <a class="el" href="mem_8c.html#e20be355b36c911871b9d489b30b93be">pid_queue_mem</a>[PID_QUEUE_MSIZE] </td>
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Memory allocated for storing Process IDs. This memory is used for Ready Queue and Semaphore Queue. The memory is split as follows:<ol type=1>
<li>Memory for Ready Queue's.</li><li>Memory for Semaphore Queue's. </li></ol>
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