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| <h2 title="Class UnsafeAccess" class="title">Class UnsafeAccess</h2> |
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| <pre>@InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| public final class <a href="../../../../../src-html/org/apache/hadoop/hbase/util/UnsafeAccess.html#line.36">UnsafeAccess</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#BYTE_ARRAY_BASE_OFFSET">BYTE_ARRAY_BASE_OFFSET</a></span></code> |
| <div class="block">The offset to the first element in a byte array.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#LITTLE_ENDIAN">LITTLE_ENDIAN</a></span></code> </td> |
| </tr> |
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| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#LOG">LOG</a></span></code> </td> |
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| <td class="colFirst"><code>static sun.misc.Unsafe</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#theUnsafe">theUnsafe</a></span></code> </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#UNSAFE_COPY_THRESHOLD">UNSAFE_COPY_THRESHOLD</a></span></code> </td> |
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| <td class="colFirst"><code>private </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#UnsafeAccess--">UnsafeAccess</a></span>()</code> </td> |
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| <tr> |
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| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#copy-byte:A-int-java.nio.ByteBuffer-int-int-">copy</a></span>(byte[] src, |
| int srcOffset, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> dest, |
| int destOffset, |
| int length)</code> |
| <div class="block">Copies the bytes from given array's offset to length part into the given buffer.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#copy-java.nio.ByteBuffer-int-byte:A-int-int-">copy</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> src, |
| int srcOffset, |
| byte[] dest, |
| int destOffset, |
| int length)</code> |
| <div class="block">Copies specified number of bytes from given offset of <code>src</code> ByteBuffer to the |
| <code>dest</code> array.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#copy-java.nio.ByteBuffer-int-java.nio.ByteBuffer-int-int-">copy</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> src, |
| int srcOffset, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> dest, |
| int destOffset, |
| int length)</code> |
| <div class="block">Copies specified number of bytes from given offset of <code>src</code> buffer into the <code>dest</code> |
| buffer.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>(package private) static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#getAsInt-java.nio.ByteBuffer-int-">getAsInt</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</code> |
| <div class="block">Reads bytes at the given offset as an int value.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>(package private) static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#getAsLong-java.nio.ByteBuffer-int-">getAsLong</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</code> |
| <div class="block">Reads bytes at the given offset as a long value.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>(package private) static short</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#getAsShort-java.nio.ByteBuffer-int-">getAsShort</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</code> |
| <div class="block">Reads bytes at the given offset as a short value.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#putByte-java.nio.ByteBuffer-int-byte-">putByte</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset, |
| byte b)</code> |
| <div class="block">Put a byte value out to the specified BB position in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#putInt-byte:A-int-int-">putInt</a></span>(byte[] bytes, |
| int offset, |
| int val)</code> |
| <div class="block">Put an int value out to the specified byte array position in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#putInt-java.nio.ByteBuffer-int-int-">putInt</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset, |
| int val)</code> |
| <div class="block">Put an int value out to the specified ByteBuffer offset in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#putLong-byte:A-int-long-">putLong</a></span>(byte[] bytes, |
| int offset, |
| long val)</code> |
| <div class="block">Put a long value out to the specified byte array position in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#putLong-java.nio.ByteBuffer-int-long-">putLong</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset, |
| long val)</code> |
| <div class="block">Put a long value out to the specified BB position in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#putShort-byte:A-int-short-">putShort</a></span>(byte[] bytes, |
| int offset, |
| short val)</code> |
| <div class="block">Put a short value out to the specified byte array position in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#putShort-java.nio.ByteBuffer-int-short-">putShort</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset, |
| short val)</code> |
| <div class="block">Put a short value out to the specified BB position in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>static byte</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toByte-java.nio.ByteBuffer-int-">toByte</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</code> |
| <div class="block">Returns the byte at the given offset</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>static byte</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toByte-java.lang.Object-long-">toByte</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> ref, |
| long offset)</code> |
| <div class="block">Returns the byte at the given offset of the object</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toInt-byte:A-int-">toInt</a></span>(byte[] bytes, |
| int offset)</code> |
| <div class="block">Converts a byte array to an int value considering it was written in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toInt-java.nio.ByteBuffer-int-">toInt</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</code> |
| <div class="block">Reads an int value at the given buffer's offset considering it was written in big-endian |
| format.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toInt-java.lang.Object-long-">toInt</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> ref, |
| long offset)</code> |
| <div class="block">Reads a int value at the given Object's offset considering it was written in big-endian |
| format.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toLong-byte:A-int-">toLong</a></span>(byte[] bytes, |
| int offset)</code> |
| <div class="block">Converts a byte array to a long value considering it was written in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toLong-java.nio.ByteBuffer-int-">toLong</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</code> |
| <div class="block">Reads a long value at the given buffer's offset considering it was written in big-endian |
| format.</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toLong-java.lang.Object-long-">toLong</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> ref, |
| long offset)</code> |
| <div class="block">Reads a long value at the given Object's offset considering it was written in big-endian |
| format.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>static short</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toShort-byte:A-int-">toShort</a></span>(byte[] bytes, |
| int offset)</code> |
| <div class="block">Converts a byte array to a short value considering it was written in big-endian format.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>static short</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toShort-java.nio.ByteBuffer-int-">toShort</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</code> |
| <div class="block">Reads a short value at the given buffer's offset considering it was written in big-endian |
| format.</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>static short</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/UnsafeAccess.html#toShort-java.lang.Object-long-">toShort</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> ref, |
| long offset)</code> |
| <div class="block">Reads a short value at the given Object's offset considering it was written in big-endian |
| format.</div> |
| </td> |
| </tr> |
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| <td class="colFirst"><code>private static void</code></td> |
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| <pre>public static void <a href="../../../../../src-html/org/apache/hadoop/hbase/util/UnsafeAccess.html#line.377">copy</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> src, |
| int srcOffset, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> dest, |
| int destOffset, |
| int length)</pre> |
| <div class="block">Copies specified number of bytes from given offset of <code>src</code> buffer into the <code>dest</code> |
| buffer.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>src</code> - </dd> |
| <dd><code>srcOffset</code> - </dd> |
| <dd><code>dest</code> - </dd> |
| <dd><code>destOffset</code> - </dd> |
| <dd><code>length</code> - </dd> |
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| <pre>public static int <a href="../../../../../src-html/org/apache/hadoop/hbase/util/UnsafeAccess.html#line.404">putShort</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset, |
| short val)</pre> |
| <div class="block">Put a short value out to the specified BB position in big-endian format.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>buf</code> - the byte buffer</dd> |
| <dd><code>offset</code> - position in the buffer</dd> |
| <dd><code>val</code> - short to write out</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>incremented offset</dd> |
| </dl> |
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| <pre>public static int <a href="../../../../../src-html/org/apache/hadoop/hbase/util/UnsafeAccess.html#line.423">putLong</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset, |
| long val)</pre> |
| <div class="block">Put a long value out to the specified BB position in big-endian format.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>buf</code> - the byte buffer</dd> |
| <dd><code>offset</code> - position in the buffer</dd> |
| <dd><code>val</code> - long to write out</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>incremented offset</dd> |
| </dl> |
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| <pre>public static int <a href="../../../../../src-html/org/apache/hadoop/hbase/util/UnsafeAccess.html#line.441">putByte</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset, |
| byte b)</pre> |
| <div class="block">Put a byte value out to the specified BB position in big-endian format.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>buf</code> - the byte buffer</dd> |
| <dd><code>offset</code> - position in the buffer</dd> |
| <dd><code>b</code> - byte to write out</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>incremented offset</dd> |
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| <pre>public static byte <a href="../../../../../src-html/org/apache/hadoop/hbase/util/UnsafeAccess.html#line.457">toByte</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> buf, |
| int offset)</pre> |
| <div class="block">Returns the byte at the given offset</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>buf</code> - the buffer to read</dd> |
| <dd><code>offset</code> - the offset at which the byte has to be read</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the byte at the given offset</dd> |
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| <pre>public static byte <a href="../../../../../src-html/org/apache/hadoop/hbase/util/UnsafeAccess.html#line.471">toByte</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> ref, |
| long offset)</pre> |
| <div class="block">Returns the byte at the given offset of the object</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>ref</code> - </dd> |
| <dd><code>offset</code> - </dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the byte at the given offset</dd> |
| </dl> |
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