cassandra-server

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html lang="en"> <head>  <title>Memory (apache-cassandra API)</title> <meta name="date" content="2014-09-07"> <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> </head> <body> <script type="text/javascript"> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript>  <div class="topNav"><a name="navbar_top">  </a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/Memory.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../../../index-all.html">Index</a></li> <li><a href="../../../../../help-doc.html">Help</a></li> </ul> </div> <div class="subNav"> <ul class="navList"> <li><a href="../../../../../org/apache/cassandra/io/util/MappedFileDataInput.html" title="class in org.apache.cassandra.io.util"><span class="strong">Prev Class</span></a></li> <li><a href="../../../../../org/apache/cassandra/io/util/MemoryInputStream.html" title="class in org.apache.cassandra.io.util"><span class="strong">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../../../index.html?org/apache/cassandra/io/util/Memory.html" target="_top">Frames</a></li> <li><a href="Memory.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_top"> <li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"> </script> </div> <div> <ul class="subNavList"> <li>Summary: </li> <li>Nested | </li> <li><a href="#field_summary">Field</a> | </li> <li><a href="#constructor_summary">Constr</a> | </li> <li><a href="#method_summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li><a href="#field_detail">Field</a> | </li> <li><a href="#constructor_detail">Constr</a> | </li> <li><a href="#method_detail">Method</a></li> </ul> </div> <a name="skip-navbar_top">  </a></div>   <div class="header"> <div class="subTitle">org.apache.cassandra.io.util</div> <h2 title="Class Memory" class="title">Class Memory</h2> </div> <div class="contentContainer"> <ul class="inheritance"> <li>java.lang.Object</li> <li> <ul class="inheritance"> <li>org.apache.cassandra.io.util.Memory</li> </ul> </li> </ul> <div class="description"> <ul class="blockList"> <li class="blockList"> <dl> <dt>Direct Known Subclasses:</dt> <dd><a href="../../../../../org/apache/cassandra/cache/RefCountedMemory.html" title="class in org.apache.cassandra.cache">RefCountedMemory</a></dd> </dl> <hr> <br> <pre>public class <span class="strong">Memory</span> extends java.lang.Object</pre> <div class="block">An off-heap region of memory that must be manually free'd when no longer needed.</div> </li> </ul> </div> <div class="summary"> <ul class="blockList"> <li class="blockList">  <ul class="blockList"> <li class="blockList"><a name="field_summary">  </a> <h3>Field Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> <caption><span>Fields</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Field and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>protected long</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#peer">peer</a></strong></code> </td> </tr> </table> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="constructor_summary">  </a> <h3>Constructor Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> <caption><span>Constructors</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier</th> <th class="colLast" scope="col">Constructor and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>protected </code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#Memory(long)">Memory</a></strong>(long bytes)</code> </td> </tr> </table> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_summary">  </a> <h3>Method Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> <caption><span>Methods</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Method and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>static <a href="../../../../../org/apache/cassandra/io/util/Memory.html" title="class in org.apache.cassandra.io.util">Memory</a></code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#allocate(long)">allocate</a></strong>(long bytes)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>java.nio.ByteBuffer[]</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#asByteBuffers()">asByteBuffers</a></strong>()</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code><a href="../../../../../org/apache/cassandra/io/util/Memory.html" title="class in org.apache.cassandra.io.util">Memory</a></code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#copy(long)">copy</a></strong>(long newSize)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>boolean</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#equals(java.lang.Object)">equals</a></strong>(java.lang.Object o)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#free()">free</a></strong>()</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>byte</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#getByte(long)">getByte</a></strong>(long offset)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#getBytes(long,%20byte[],%20int,%20int)">getBytes</a></strong>(long memoryOffset, byte[] buffer, int bufferOffset, int count)</code> <div class="block">Transfers count bytes from Memory starting at memoryOffset to buffer starting at bufferOffset</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>int</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#getInt(long)">getInt</a></strong>(long offset)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>long</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#getLong(long)">getLong</a></strong>(long offset)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#put(long,%20org.apache.cassandra.io.util.Memory,%20long,%20long)">put</a></strong>(long trgOffset, <a href="../../../../../org/apache/cassandra/io/util/Memory.html" title="class in org.apache.cassandra.io.util">Memory</a> memory, long srcOffset, long size)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#setByte(long,%20byte)">setByte</a></strong>(long offset, byte b)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#setBytes(long,%20byte[],%20int,%20int)">setBytes</a></strong>(long memoryOffset, byte[] buffer, int bufferOffset, int count)</code> <div class="block">Transfers count bytes from buffer to Memory</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#setBytes(long,%20java.nio.ByteBuffer)">setBytes</a></strong>(long memoryOffset, java.nio.ByteBuffer buffer)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#setInt(long,%20int)">setInt</a></strong>(long offset, int l)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#setLong(long,%20long)">setLong</a></strong>(long offset, long l)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#setMemory(long,%20long,%20byte)">setMemory</a></strong>(long offset, long bytes, byte b)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>long</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/io/util/Memory.html#size()">size</a></strong>()</code> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a name="methods_inherited_from_class_java.lang.Object">  </a> <h3>Methods inherited from class java.lang.Object</h3> <code>clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> </ul> </li> </ul> </li> </ul> </div> <div class="details"> <ul class="blockList"> <li class="blockList">  <ul class="blockList"> <li class="blockList"><a name="field_detail">  </a> <h3>Field Detail</h3> <a name="peer">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>peer</h4> <pre>protected long peer</pre> </li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="constructor_detail">  </a> <h3>Constructor Detail</h3> <a name="Memory(long)">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>Memory</h4> <pre>protected Memory(long bytes)</pre> </li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_detail">  </a> <h3>Method Detail</h3> <a name="allocate(long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>allocate</h4> <pre>public static <a href="../../../../../org/apache/cassandra/io/util/Memory.html" title="class in org.apache.cassandra.io.util">Memory</a> allocate(long bytes)</pre> </li> </ul> <a name="setByte(long, byte)">  </a> <ul class="blockList"> <li class="blockList"> <h4>setByte</h4> <pre>public void setByte(long offset, byte b)</pre> </li> </ul> <a name="setMemory(long, long, byte)">  </a> <ul class="blockList"> <li class="blockList"> <h4>setMemory</h4> <pre>public void setMemory(long offset, long bytes, byte b)</pre> </li> </ul> <a name="setLong(long, long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>setLong</h4> <pre>public void setLong(long offset, long l)</pre> </li> </ul> <a name="setInt(long, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>setInt</h4> <pre>public void setInt(long offset, int l)</pre> </li> </ul> <a name="setBytes(long, java.nio.ByteBuffer)">  </a> <ul class="blockList"> <li class="blockList"> <h4>setBytes</h4> <pre>public void setBytes(long memoryOffset, java.nio.ByteBuffer buffer)</pre> </li> </ul> <a name="setBytes(long, byte[], int, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>setBytes</h4> <pre>public void setBytes(long memoryOffset, byte[] buffer, int bufferOffset, int count)</pre> <div class="block">Transfers count bytes from buffer to Memory</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>memoryOffset</code> - start offset in the memory</dd><dd><code>buffer</code> - the data buffer</dd><dd><code>bufferOffset</code> - start offset of the buffer</dd><dd><code>count</code> - number of bytes to transfer</dd></dl> </li> </ul> <a name="getByte(long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getByte</h4> <pre>public byte getByte(long offset)</pre> </li> </ul> <a name="getLong(long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getLong</h4> <pre>public long getLong(long offset)</pre> </li> </ul> <a name="getInt(long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getInt</h4> <pre>public int getInt(long offset)</pre> </li> </ul> <a name="getBytes(long, byte[], int, int)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getBytes</h4> <pre>public void getBytes(long memoryOffset, byte[] buffer, int bufferOffset, int count)</pre> <div class="block">Transfers count bytes from Memory starting at memoryOffset to buffer starting at bufferOffset</div> <dl><dt><span class="strong">Parameters:</span></dt><dd><code>memoryOffset</code> - start offset in the memory</dd><dd><code>buffer</code> - the data buffer</dd><dd><code>bufferOffset</code> - start offset of the buffer</dd><dd><code>count</code> - number of bytes to transfer</dd></dl> </li> </ul> <a name="put(long, org.apache.cassandra.io.util.Memory, long, long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>put</h4> <pre>public void put(long trgOffset, <a href="../../../../../org/apache/cassandra/io/util/Memory.html" title="class in org.apache.cassandra.io.util">Memory</a> memory, long srcOffset, long size)</pre> </li> </ul> <a name="copy(long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>copy</h4> <pre>public <a href="../../../../../org/apache/cassandra/io/util/Memory.html" title="class in org.apache.cassandra.io.util">Memory</a> copy(long newSize)</pre> </li> </ul> <a name="free()">  </a> <ul class="blockList"> <li class="blockList"> <h4>free</h4> <pre>public void free()</pre> </li> </ul> <a name="size()">  </a> <ul class="blockList"> <li class="blockList"> <h4>size</h4> <pre>public long size()</pre> </li> </ul> <a name="equals(java.lang.Object)">  </a> <ul class="blockList"> <li class="blockList"> <h4>equals</h4> <pre>public boolean equals(java.lang.Object o)</pre> <dl> <dt><strong>Overrides:</strong></dt> <dd><code>equals</code> in class <code>java.lang.Object</code></dd> </dl> </li> </ul> <a name="asByteBuffers()">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>asByteBuffers</h4> <pre>public java.nio.ByteBuffer[] asByteBuffers()</pre> </li> </ul> </li> </ul> </li> </ul> </div> </div>   <div class="bottomNav"><a name="navbar_bottom">  </a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/Memory.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../../../index-all.html">Index</a></li> <li><a href="../../../../../help-doc.html">Help</a></li> </ul> </div> <div class="subNav"> <ul class="navList"> <li><a href="../../../../../org/apache/cassandra/io/util/MappedFileDataInput.html" title="class in org.apache.cassandra.io.util"><span class="strong">Prev Class</span></a></li> <li><a href="../../../../../org/apache/cassandra/io/util/MemoryInputStream.html" title="class in org.apache.cassandra.io.util"><span class="strong">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../../../index.html?org/apache/cassandra/io/util/Memory.html" target="_top">Frames</a></li> <li><a href="Memory.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_bottom"> <li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"> </script> </div> <div> <ul class="subNavList"> <li>Summary: </li> <li>Nested | </li> <li><a href="#field_summary">Field</a> | </li> <li><a href="#constructor_summary">Constr</a> | </li> <li><a href="#method_summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li><a href="#field_detail">Field</a> | </li> <li><a href="#constructor_detail">Constr</a> | </li> <li><a href="#method_detail">Method</a></li> </ul> </div> <a name="skip-navbar_bottom">  </a></div>  <p class="legalCopy"><small>Copyright © 2014 The Apache Software Foundation</small></p> </body> </html>