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+ <a href="oauth2client-module.html">Package oauth2client</a> ::
+ Module locked_file
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+<!-- ==================== MODULE DESCRIPTION ==================== -->
+<h1 class="epydoc">Module locked_file</h1><p class="nomargin-top"><span class="codelink"><a href="oauth2client.locked_file-pysrc.html">source code</a></span></p>
+<pre class="literalblock">
+Locked file interface that should work on Unix and Windows pythons.
+
+This module first tries to use fcntl locking to ensure serialized access
+to a file, then falls back on a lock file if that is unavialable.
+
+Usage:
+ f = LockedFile('filename', 'r+b', 'rb')
+ f.open_and_lock()
+ if f.is_locked():
+ print 'Acquired filename with r+b mode'
+ f.file_handle().write('locked data')
+ else:
+ print 'Aquired filename with rb mode'
+ f.unlock_and_close()
+
+</pre>
+
+<hr />
+<div class="fields"> <p><strong>Author:</strong>
+ cache@google.com (David T McWherter)
+ </p>
+</div><!-- ==================== CLASSES ==================== -->
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+ <td width="15%" align="right" valign="top" class="summary">
+ <span class="summary-type"> </span>
+ </td><td class="summary">
+ <a href="oauth2client.locked_file.AlreadyLockedException-class.html" class="summary-name">AlreadyLockedException</a><br />
+ Trying to lock a file that has already been locked by the LockedFile.
+ </td>
+ </tr>
+<tr class="private">
+ <td width="15%" align="right" valign="top" class="summary">
+ <span class="summary-type"> </span>
+ </td><td class="summary">
+ <a href="oauth2client.locked_file._Opener-class.html" class="summary-name" onclick="show_private();">_Opener</a><br />
+ Base class for different locking primitives.
+ </td>
+ </tr>
+<tr class="private">
+ <td width="15%" align="right" valign="top" class="summary">
+ <span class="summary-type"> </span>
+ </td><td class="summary">
+ <a href="oauth2client.locked_file._PosixOpener-class.html" class="summary-name" onclick="show_private();">_PosixOpener</a><br />
+ Lock files using Posix advisory lock files.
+ </td>
+ </tr>
+<tr class="private">
+ <td width="15%" align="right" valign="top" class="summary">
+ <span class="summary-type"> </span>
+ </td><td class="summary">
+ <a href="oauth2client.locked_file._FcntlOpener-class.html" class="summary-name" onclick="show_private();">_FcntlOpener</a><br />
+ Open, lock, and unlock a file using fcntl.lockf.
+ </td>
+ </tr>
+<tr>
+ <td width="15%" align="right" valign="top" class="summary">
+ <span class="summary-type"> </span>
+ </td><td class="summary">
+ <a href="oauth2client.locked_file.LockedFile-class.html" class="summary-name">LockedFile</a><br />
+ Represent a file that has exclusive access.
+ </td>
+ </tr>
+</table>
+<!-- ==================== VARIABLES ==================== -->
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