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Yasuhiro KIMURA
829 lines
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<div class="aboutLanguage"><b>Berkeley DB</b><br><font size="-1"> version 18.1.40</font></div>
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<li>Summary: </li>
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<div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">com.sleepycat.db</a></div>
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<h2 title="Class LogStats" class="title">Class LogStats</h2>
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<ul class="inheritance">
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<li>java.lang.Object</li>
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<ul class="inheritance">
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<li>com.sleepycat.db.LogStats</li>
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<pre>public class <span class="typeNameLabel">LogStats</span>
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extends java.lang.Object</pre>
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<div class="block">Log statistics for a database environment.</div>
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<h3>Method Summary</h3>
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<table class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colSecond" scope="col">Method</th>
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<th class="colLast" scope="col">Description</th>
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</tr>
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<tr id="i0" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCurFile--">getCurFile</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The current log file number.</div>
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</td>
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</tr>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCurOffset--">getCurOffset</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The byte offset in the current log file.</div>
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</td>
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</tr>
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<tr id="i2" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDiskFile--">getDiskFile</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The log file number of the last record known to be on disk.</div>
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</td>
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</tr>
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<tr id="i3" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDiskOffset--">getDiskOffset</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The byte offset of the last record known to be on disk.</div>
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</td>
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</tr>
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<tr id="i4" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFileidInit--">getFileidInit</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The initial allocated file logging identifiers.</div>
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</td>
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</tr>
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<tr id="i5" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getLgBSize--">getLgBSize</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The in-memory log record cache size.</div>
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</td>
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</tr>
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<tr id="i6" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getLgSize--">getLgSize</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The current log file size.</div>
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</td>
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</tr>
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<tr id="i7" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMagic--">getMagic</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The magic number that identifies a file as a log file.</div>
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</td>
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</tr>
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<tr id="i8" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMaxCommitperflush--">getMaxCommitperflush</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The maximum number of commits contained in a single log flush.</div>
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</td>
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</tr>
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<tr id="i9" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMaxNfileId--">getMaxNfileId</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The maximum number of file logging identifiers used.</div>
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</td>
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</tr>
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<tr id="i10" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMinCommitperflush--">getMinCommitperflush</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The minimum number of commits contained in a single log flush that
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contained a commit.</div>
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</td>
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</tr>
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<tr id="i11" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMode--">getMode</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The mode of any created log files.</div>
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</td>
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</tr>
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<tr id="i12" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNumFileId--">getNumFileId</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The current number of file logging identifiers.</div>
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</td>
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</tr>
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<tr id="i13" class="rowColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRCount--">getRCount</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of times the log has been read from disk.</div>
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</td>
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</tr>
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<tr id="i14" class="altColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRecord--">getRecord</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of records written to this log.</div>
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</td>
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<tr id="i15" class="rowColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRegionNowait--">getRegionNowait</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of times that a thread of control was able to obtain
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the log region mutex without waiting.</div>
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</td>
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</tr>
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<tr id="i16" class="altColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRegionWait--">getRegionWait</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of times that a thread of control was forced to wait
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before obtaining the log region mutex.</div>
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</td>
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</tr>
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<tr id="i17" class="rowColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRegSize--">getRegSize</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The size of the region.</div>
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</td>
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</tr>
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<tr id="i18" class="altColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSCount--">getSCount</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of times the log has been flushed to disk.</div>
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</td>
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</tr>
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<tr id="i19" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getVersion--">getVersion</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The version of the log file type.</div>
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</td>
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</tr>
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<tr id="i20" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWBytes--">getWBytes</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of bytes over and above <a href="#getWMbytes--"><code>getWMbytes()</code></a> written to this log.</div>
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</td>
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</tr>
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<tr id="i21" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWcBytes--">getWcBytes</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of bytes over and above <a href="#getWcMbytes--"><code>LogStats.getWcMbytes</code></a>
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written to this log since the last checkpoint.</div>
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</td>
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</tr>
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<tr id="i22" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWcMbytes--">getWcMbytes</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of megabytes written to this log since the last checkpoint.</div>
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</td>
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</tr>
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<tr id="i23" class="rowColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWCount--">getWCount</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of times the log has been written to disk.</div>
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</td>
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<tr id="i24" class="altColor">
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<td class="colFirst"><code>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWCountFill--">getWCountFill</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of times the log has been written to disk because the
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in-memory log record cache filled up.</div>
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</td>
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</tr>
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<tr id="i25" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWMbytes--">getWMbytes</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of megabytes written to this log.</div>
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</td>
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</tr>
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<tr id="i26" class="altColor">
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<td class="colFirst"><code>java.lang.String</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString--">toString</a></span>()</code></th>
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<td class="colLast">
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<div class="block">For convenience, the LogStats class has a toString method that lists
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all the data fields.</div>
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<h3>Methods inherited from class java.lang.Object</h3>
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<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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</ul>
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<h3>Method Detail</h3>
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<h4>getMagic</h4>
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<pre class="methodSignature">public int getMagic()</pre>
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<div class="block">The magic number that identifies a file as a log file.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the magic number that identifies a file as a log file</dd>
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</dl>
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<h4>getVersion</h4>
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<pre class="methodSignature">public int getVersion()</pre>
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<div class="block">The version of the log file type.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the version of the log file type</dd>
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<div class="block">The number of megabytes written to this log since the last checkpoint.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dt><span class="returnLabel">Returns:</span></dt>
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<div class="block">The maximum number of file logging identifiers used.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of records written to this log</dd>
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<div class="block">The number of bytes over and above <a href="#getWMbytes--"><code>getWMbytes()</code></a> written to this log.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of bytes over and above <a href="#getWMbytes--"><code>getWMbytes()</code></a> written to this log</dd>
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<div class="block">The number of megabytes written to this log.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of megabytes written to this log</dd>
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<div class="block">The number of times the log has been written to disk.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of times the log has been written to disk</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<pre class="methodSignature">public long getRCount()</pre>
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<div class="block">The number of times the log has been read from disk.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of times the log has been read from disk</dd>
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<pre class="methodSignature">public long getSCount()</pre>
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<div class="block">The number of times the log has been flushed to disk.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of times the log has been flushed to disk</dd>
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<pre class="methodSignature">public long getRegionWait()</pre>
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<div class="block">The number of times that a thread of control was forced to wait
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before obtaining the log region mutex.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of times that a thread of control was forced to wait
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<pre class="methodSignature">public long getRegionNowait()</pre>
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<div class="block">The number of times that a thread of control was able to obtain
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the log region mutex without waiting.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of times that a thread of control was able to obtain
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the log region mutex without waiting</dd>
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<pre class="methodSignature">public int getCurFile()</pre>
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<div class="block">The current log file number.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the current log file number</dd>
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<pre class="methodSignature">public int getCurOffset()</pre>
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<div class="block">The byte offset in the current log file.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the byte offset in the current log file</dd>
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<pre class="methodSignature">public int getDiskFile()</pre>
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<div class="block">The log file number of the last record known to be on disk.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the log file number of the last record known to be on disk</dd>
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<pre class="methodSignature">public int getDiskOffset()</pre>
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<div class="block">The byte offset of the last record known to be on disk.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the byte offset of the last record known to be on disk</dd>
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<pre class="methodSignature">public int getMaxCommitperflush()</pre>
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<div class="block">The maximum number of commits contained in a single log flush.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the maximum number of commits contained in a single log flush</dd>
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<pre class="methodSignature">public int getMinCommitperflush()</pre>
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<div class="block">The minimum number of commits contained in a single log flush that
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contained a commit.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the minimum number of commits contained in a single log flush that
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contained a commit</dd>
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<pre class="methodSignature">public long getRegSize()</pre>
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<div class="block">The size of the region.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the size of the region</dd>
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<pre class="methodSignature">public java.lang.String toString()</pre>
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<div class="block">For convenience, the LogStats class has a toString method that lists
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all the data fields.</div>
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<dl>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
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<dd><code>toString</code> in class <code>java.lang.Object</code></dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>a String that lists all the data fields</dd>
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