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<div class="title">spinlock.c File Reference</div> </div>
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<div class="textblock"><code>#include <<a class="el" href="__null_8h_source.html">sys/_null.h</a>></code><br />
<code>#include <<a class="el" href="spinlock_8h_source.html">ubixos/spinlock.h</a>></code><br />
<code>#include <<a class="el" href="sched_8h_source.html">ubixos/sched.h</a>></code><br />
<code>#include <<a class="el" href="string_8h_source.html">string.h</a>></code><br />
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Include dependency graph for spinlock.c:</div>
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<div class="center"><img src="i386_2spinlock_8c__incl.png" border="0" usemap="#C_1_2Dev_2git_2UbixOS_2sys_2arch_2i386_2spinlock_8c" alt=""/></div>
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<p><a href="i386_2spinlock_8c_source.html">Go to the source code of this file.</a></p>
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Macros</h2></td></tr>
<tr class="memitem:a98eeefbec68bcb915a01f12e4ebdefd5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a98eeefbec68bcb915a01f12e4ebdefd5">atomic_add</a>(P, V)   __sync_add_and_fetch((P), (V))</td></tr>
<tr class="separator:a98eeefbec68bcb915a01f12e4ebdefd5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac3b21a79504f9ee98f451f9f7092170d"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#ac3b21a79504f9ee98f451f9f7092170d">atomic_clear_bit</a>(P, V)   __sync_and_and_fetch((P), ~(1<<(V)))</td></tr>
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<tr class="memitem:a59c16c0e6ca2a4509a89b4095897f29f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a59c16c0e6ca2a4509a89b4095897f29f">atomic_dec</a>(P)   __sync_add_and_fetch((P), -1)</td></tr>
<tr class="separator:a59c16c0e6ca2a4509a89b4095897f29f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a45a583ebc7ce181c15688c871f955e98"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a45a583ebc7ce181c15688c871f955e98">atomic_inc</a>(P)   __sync_add_and_fetch((P), 1)</td></tr>
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<tr class="memitem:ac8aeecdc7ff00f1c46d5a91a73db87dd"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#ac8aeecdc7ff00f1c46d5a91a73db87dd">atomic_set_bit</a>(P, V)   __sync_or_and_fetch((P), 1<<(V))</td></tr>
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<tr class="memitem:a97c020c88ee892bb5a3055d5a68c9788"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a97c020c88ee892bb5a3055d5a68c9788">atomic_xadd</a>(P, V)   __sync_fetch_and_add((P), (V))</td></tr>
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<tr class="memitem:a53290ac2df2384738b8769c76622f803"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a53290ac2df2384738b8769c76622f803">barrier</a>()   <a class="el" href="idt_8c.html#af03c996a639f5610a8514c6e6f8d15e6">asm</a> <a class="el" href="cdefs_8h.html#af55a5e48555be7d32ad73e76cf5d4db0">volatile</a>("": : :"memory")</td></tr>
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<tr class="memitem:a2ecfcce98539a0b972d6fa2586c4e67f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a2ecfcce98539a0b972d6fa2586c4e67f">cmpxchg</a>(P, O, N)   __sync_val_compare_and_swap((P), (O), (N))</td></tr>
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<tr class="memitem:a89af7a9ebf21399bcbd8e892b6f3d41a"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a89af7a9ebf21399bcbd8e892b6f3d41a">cpu_relax</a>()   <a class="el" href="idt_8c.html#af03c996a639f5610a8514c6e6f8d15e6">asm</a> <a class="el" href="cdefs_8h.html#af55a5e48555be7d32ad73e76cf5d4db0">volatile</a>("pause\n": : :"memory")</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:a0c58bcf16e5750a53054b545f314c3dc"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#a0c58bcf16e5750a53054b545f314c3dc">spinLock</a> (<a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> lock)</td></tr>
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<tr class="memitem:ae17adaacb59f9cc8f63d81373be35a99"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#ae17adaacb59f9cc8f63d81373be35a99">spinLockInit</a> (<a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> lock)</td></tr>
<tr class="separator:ae17adaacb59f9cc8f63d81373be35a99"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:afd90c47975d942a2fdf7c2bc0ff58ea1"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#afd90c47975d942a2fdf7c2bc0ff58ea1">spinTryLock</a> (<a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> lock)</td></tr>
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<tr class="memitem:ac2d032c89ee37bb624eb87b9954f4a1e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="i386_2spinlock_8c.html#ac2d032c89ee37bb624eb87b9954f4a1e">spinUnlock</a> (<a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> lock)</td></tr>
<tr class="separator:ac2d032c89ee37bb624eb87b9954f4a1e"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a98eeefbec68bcb915a01f12e4ebdefd5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a98eeefbec68bcb915a01f12e4ebdefd5">◆ </a></span>atomic_add</h2>
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<td class="memname">#define atomic_add</td>
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<td></td><td>   __sync_add_and_fetch((P), (V))</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00038">38</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac3b21a79504f9ee98f451f9f7092170d">◆ </a></span>atomic_clear_bit</h2>
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<td class="memname">#define atomic_clear_bit</td>
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<td></td><td>   __sync_and_and_fetch((P), ~(1<<(V)))</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00040">40</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a59c16c0e6ca2a4509a89b4095897f29f">◆ </a></span>atomic_dec</h2>
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<td class="memname">#define atomic_dec</td>
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<td class="paramname">P</td><td>)</td>
<td>   __sync_add_and_fetch((P), -1)</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00037">37</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a45a583ebc7ce181c15688c871f955e98">◆ </a></span>atomic_inc</h2>
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<td class="memname">#define atomic_inc</td>
<td>(</td>
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<td class="paramname">P</td><td>)</td>
<td>   __sync_add_and_fetch((P), 1)</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00036">36</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac8aeecdc7ff00f1c46d5a91a73db87dd">◆ </a></span>atomic_set_bit</h2>
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<td class="memname">#define atomic_set_bit</td>
<td>(</td>
<td class="paramtype"> </td>
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<td></td><td>   __sync_or_and_fetch((P), 1<<(V))</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00039">39</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<td class="memname">#define atomic_xadd</td>
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<td></td><td>   __sync_fetch_and_add((P), (V))</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00034">34</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a53290ac2df2384738b8769c76622f803">◆ </a></span>barrier</h2>
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<td class="memname">#define barrier</td>
<td>(</td>
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<td>   <a class="el" href="idt_8c.html#af03c996a639f5610a8514c6e6f8d15e6">asm</a> <a class="el" href="cdefs_8h.html#af55a5e48555be7d32ad73e76cf5d4db0">volatile</a>("": : :"memory")</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00042">42</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2ecfcce98539a0b972d6fa2586c4e67f">◆ </a></span>cmpxchg</h2>
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<td class="memname">#define cmpxchg</td>
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<td></td><td>   __sync_val_compare_and_swap((P), (O), (N))</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00035">35</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a89af7a9ebf21399bcbd8e892b6f3d41a">◆ </a></span>cpu_relax</h2>
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<td class="memname">#define cpu_relax</td>
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<td>   <a class="el" href="idt_8c.html#af03c996a639f5610a8514c6e6f8d15e6">asm</a> <a class="el" href="cdefs_8h.html#af55a5e48555be7d32ad73e76cf5d4db0">volatile</a>("pause\n": : :"memory")</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00045">45</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a0c58bcf16e5750a53054b545f314c3dc">◆ </a></span>spinLock()</h2>
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<td class="memname">void <a class="el" href="structspinLock.html">spinLock</a> </td>
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<td class="paramtype"><a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> </td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00064">64</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae17adaacb59f9cc8f63d81373be35a99">◆ </a></span>spinLockInit()</h2>
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<td class="memname">void spinLockInit </td>
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<td class="paramtype"><a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> </td>
<td class="paramname"><em>lock</em></td><td>)</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00047">47</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
<p class="reference">References <a class="el" href="string_8h.html#ace4b911463887af5e748326323e99a23">memset()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#afd90c47975d942a2fdf7c2bc0ff58ea1">◆ </a></span>spinTryLock()</h2>
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<td class="memname">int spinTryLock </td>
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<td class="paramtype"><a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> </td>
<td class="paramname"><em>lock</em></td><td>)</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00051">51</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
<p class="reference">References <a class="el" href="i386_2spinlock_8c_source.html#l00035">cmpxchg</a>, <a class="el" href="spinlock_8h_source.html#l00037">LLOCK_FLAG</a>, <a class="el" href="spinlock_8h_source.html#l00034">LOCKED</a>, <a class="el" href="spinlock_8h_source.html#l00043">spinLock::locked</a>, and <a class="el" href="fat__string_8h_source.html#l00017">NULL</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac2d032c89ee37bb624eb87b9954f4a1e">◆ </a></span>spinUnlock()</h2>
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<td class="memname">void spinUnlock </td>
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<td class="paramtype"><a class="el" href="spinlock_8h.html#a205601d674593c0fff0a54719d27465b">spinLock_t</a> </td>
<td class="paramname"><em>lock</em></td><td>)</td>
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<p class="definition">Definition at line <a class="el" href="i386_2spinlock_8c_source.html#l00059">59</a> of file <a class="el" href="i386_2spinlock_8c_source.html">spinlock.c</a>.</p>
<p class="reference">References <a class="el" href="i386_2spinlock_8c_source.html#l00042">barrier</a>, and <a class="el" href="spinlock_8h_source.html#l00043">spinLock::locked</a>.</p>
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