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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.eclipse.jetty.io</a></div> |
| <h2 title="Class RetainableByteBuffer" class="title">Class RetainableByteBuffer</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <li>org.eclipse.jetty.io.RetainableByteBuffer</li> |
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| <dd><code><a href="../util/Retainable.html" title="interface in org.eclipse.jetty.util">Retainable</a></code></dd> |
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| <hr> |
| <pre>public class <span class="typeNameLabel">RetainableByteBuffer</span> |
| extends java.lang.Object |
| implements <a href="../util/Retainable.html" title="interface in org.eclipse.jetty.util">Retainable</a></pre> |
| <div class="block"><p>A pooled ByteBuffer which maintains a reference count that is |
| incremented with <a href="#retain()"><code>retain()</code></a> and decremented with <a href="#release()"><code>release()</code></a>. The buffer |
| is released to the pool when <a href="#release()"><code>release()</code></a> is called one more time than <a href="#retain()"><code>retain()</code></a>.</p> |
| <p>A <code>RetainableByteBuffer</code> can either be: |
| <ul> |
| <li>in pool; in this case <a href="#isRetained()"><code>isRetained()</code></a> returns <code>false</code> and calling <a href="#release()"><code>release()</code></a> throws <code>IllegalStateException</code></li> |
| <li>out of pool but not retained; in this case <a href="#isRetained()"><code>isRetained()</code></a> returns <code>false</code> and calling <a href="#release()"><code>release()</code></a> returns <code>true</code></li> |
| <li>out of pool and retained; in this case <a href="#isRetained()"><code>isRetained()</code></a> returns <code>true</code> and calling <a href="#release()"><code>release()</code></a> returns <code>false</code></li> |
| </ul> |
| <p>Calling <a href="#release()"><code>release()</code></a> on a out of pool and retained instance does not re-pool it while that re-pools it on a out of pool but not retained instance.</p></div> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#capacity()">capacity</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clear()">clear</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.nio.ByteBuffer</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getBuffer()">getBuffer</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getLastUpdate()">getLastUpdate</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasRemaining()">hasRemaining</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isDirect()">isDirect</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isEmpty()">isEmpty</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isRetained()">isRetained</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Checks if <a href="#retain()"><code>retain()</code></a> has been called at least one more time than <a href="#release()"><code>release()</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#release()">release</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Decrements the retained counter of this buffer.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#remaining()">remaining</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#retain()">retain</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Increments the retained counter of this buffer.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li> |
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| <pre class="methodSignature">public java.nio.ByteBuffer getBuffer()</pre> |
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| <div class="block">Checks if <a href="#retain()"><code>retain()</code></a> has been called at least one more time than <a href="#release()"><code>release()</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if this buffer is retained, false otherwise.</dd> |
| </dl> |
| </li> |
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| <pre class="methodSignature">public void retain()</pre> |
| <div class="block">Increments the retained counter of this buffer.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../util/Retainable.html#retain()">retain</a></code> in interface <code><a href="../util/Retainable.html" title="interface in org.eclipse.jetty.util">Retainable</a></code></dd> |
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| <h4>release</h4> |
| <pre class="methodSignature">public boolean release()</pre> |
| <div class="block">Decrements the retained counter of this buffer.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the buffer was re-pooled, false otherwise.</dd> |
| </dl> |
| </li> |
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