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<div class="title">File Lock Types<div class="ingroups"><a class="el" href="group___a_p_r.html">Apache Portability Runtime library</a> » <a class="el" href="group__apr__file__io.html">File I/O Handling Functions</a></div></div> </div>
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Collaboration diagram for File Lock Types:</div>
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Macros</h2></td></tr>
<tr class="memitem:gaba177fe81cd70b389753ad2096b2ce7c"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__file__lock__types.html#gaba177fe81cd70b389753ad2096b2ce7c">APR_FLOCK_SHARED</a>   1</td></tr>
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<tr class="memitem:gafbf0caa093b99bdf11e25360b9099852"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__file__lock__types.html#gafbf0caa093b99bdf11e25360b9099852">APR_FLOCK_EXCLUSIVE</a>   2</td></tr>
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<tr class="memitem:ga40777e364fb20bb9a9ee57e74b19c13d"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__file__lock__types.html#ga40777e364fb20bb9a9ee57e74b19c13d">APR_FLOCK_TYPEMASK</a>   0x000F</td></tr>
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<tr class="memitem:gab327fa0250e19006f20d5ec65fe7f22a"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__file__lock__types.html#gab327fa0250e19006f20d5ec65fe7f22a">APR_FLOCK_NONBLOCK</a>   0x0010</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#gafbf0caa093b99bdf11e25360b9099852">◆ </a></span>APR_FLOCK_EXCLUSIVE</h2>
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<td class="memname">#define APR_FLOCK_EXCLUSIVE   2</td>
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<p>Exclusive lock. Only one process may hold an exclusive lock at any given time. This is analogous to a "write lock". </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gab327fa0250e19006f20d5ec65fe7f22a">◆ </a></span>APR_FLOCK_NONBLOCK</h2>
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<td class="memname">#define APR_FLOCK_NONBLOCK   0x0010</td>
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<p>do not block while acquiring the file lock </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gaba177fe81cd70b389753ad2096b2ce7c">◆ </a></span>APR_FLOCK_SHARED</h2>
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<td class="memname">#define APR_FLOCK_SHARED   1</td>
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<p>Shared lock. More than one process or thread can hold a shared lock at any given time. Essentially, this is a "read lock", preventing writers from establishing an exclusive lock. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga40777e364fb20bb9a9ee57e74b19c13d">◆ </a></span>APR_FLOCK_TYPEMASK</h2>
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<td class="memname">#define APR_FLOCK_TYPEMASK   0x000F</td>
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<p>mask to extract lock type </p>
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