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Yasuhiro KIMURA
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527 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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<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 MutexStats" class="title">Class MutexStats</h2>
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<div class="contentContainer">
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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.MutexStats</li>
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<pre>public class <span class="typeNameLabel">MutexStats</span>
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extends java.lang.Object</pre>
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<div class="block">Statistics about mutexes in a Berkeley DB database environment, returned
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by <a href="Environment.html#getMutexStats-com.sleepycat.db.StatsConfig-"><code>Environment.getMutexStats(com.sleepycat.db.StatsConfig)</code></a></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="#getMutexAlign--">getMutexAlign</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The mutex alignment, in bytes.</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="#getMutexCount--">getMutexCount</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The total number of mutexes configured.</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="#getMutexFree--">getMutexFree</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of mutexes currently available.</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="#getMutexInit--">getMutexInit</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The initial number of mutexes configured.</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="#getMutexInuse--">getMutexInuse</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of mutexes currently in use.</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="#getMutexInuseMax--">getMutexInuseMax</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The maximum number of mutexes ever in use.</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="#getMutexMax--">getMutexMax</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The maximum number of mutexes.</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="#getMutexTasSpins--">getMutexTasSpins</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The number of times test-and-set mutexes will spin without blocking.</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>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 mutex region mutex without waiting.</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>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 before
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obtaining the mutex region mutex.</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>long</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRegmax--">getRegmax</a></span>()</code></th>
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<td class="colLast">
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<div class="block">The max size of the mutex region size.</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>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 mutex region, in bytes.</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>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 MutexStats 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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<h4>getMutexAlign</h4>
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<pre class="methodSignature">public int getMutexAlign()</pre>
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<div class="block">The mutex alignment, in bytes.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the mutex alignment, in bytes</dd>
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<h4>getMutexTasSpins</h4>
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<div class="block">The number of times test-and-set mutexes will spin without blocking.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of times test-and-set mutexes will spin without blocking</dd>
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<h4>getMutexInit</h4>
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<pre class="methodSignature">public int getMutexInit()</pre>
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<div class="block">The initial number of mutexes configured.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the initial number of mutexes configured</dd>
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<h4>getMutexCount</h4>
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<pre class="methodSignature">public int getMutexCount()</pre>
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<div class="block">The total number of mutexes configured.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the total number of mutexes configured</dd>
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<pre class="methodSignature">public int getMutexMax()</pre>
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<div class="block">The maximum number of mutexes.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the maximum number of mutexes</dd>
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<pre class="methodSignature">public int getMutexFree()</pre>
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<div class="block">The number of mutexes currently available.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of mutexes currently available</dd>
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<h4>getMutexInuse</h4>
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<pre class="methodSignature">public int getMutexInuse()</pre>
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<div class="block">The number of mutexes currently in use.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the number of mutexes currently in use</dd>
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<pre class="methodSignature">public int getMutexInuseMax()</pre>
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<div class="block">The maximum number of mutexes ever in use.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the maximum number of mutexes ever in use</dd>
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</dl>
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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 before
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obtaining the mutex region mutex.</div>
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<dl>
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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
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to wait before obtaining the mutex region mutex</dd>
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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 mutex region mutex without waiting.</div>
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<dl>
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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 mutex region mutex without waiting</dd>
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<pre class="methodSignature">public long getRegSize()</pre>
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<div class="block">The size of the mutex region, in bytes.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the size of the mutex region, in bytes</dd>
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<h4>getRegmax</h4>
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<pre class="methodSignature">public long getRegmax()</pre>
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<div class="block">The max size of the mutex region size.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the max size of the mutex region size</dd>
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</dl>
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<h4>toString</h4>
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<pre class="methodSignature">public java.lang.String toString()</pre>
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<div class="block">For convenience, the MutexStats 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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