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<h2 title="Class ObjectModel" class="title">Class ObjectModel</h2>
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<ul class="inheritance">
<li><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">java.lang.Object</a></li>
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<li>com.ibm.j9ddr.vm29.j9.ObjectModel</li>
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<pre>public final class <span class="typeNameLabel">ObjectModel</span>
extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Object</a></pre>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>protected static <a href="gc/GCObjectModel.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCObjectModel</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#gcObjectModel">gcObjectModel</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#adjustSizeInBytes(com.ibm.j9ddr.vm29.types.UDATA)">adjustSizeInBytes</a></span>&#8203;(<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;sizeInBytes)</code></th>
<td class="colLast">
<div class="block">Object size should be at least minimumConsumedSize
and 8 byte aligned.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#findRegionForPointer(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionManager,com.ibm.j9ddr.vm29.pointer.AbstractPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionDescriptor)">findRegionForPointer</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer&nbsp;javaVM,
<a href="gc/GCHeapRegionManager.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionManager</a>&nbsp;hrm,
<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer,
<a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a>&nbsp;region)</code></th>
<td class="colLast">
<div class="block">Returns the heap region of a pointer.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="../types/U32.html" title="class in com.ibm.j9ddr.vm29.types">U32</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAge(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getAge</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the age of an object.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getClassShape(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer)">getClassShape</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer&nbsp;clazz)</code></th>
<td class="colLast">
<div class="block">Returns the shape of an object.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getClassShape(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getClassShape</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the shape of an object.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getConsumedSizeInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getConsumedSizeInBytesWithHeader</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Same as getSizeInBytesWithHeader,
except it takes into account
object alignment and minimum object size</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getConsumedSizeInSlotsWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getConsumedSizeInSlotsWithHeader</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Same as getSizeInSlotsWithHeader,
except it takes into account
object alignment and minimum object size</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDataSizeInBytes(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer)">getDataSizeInBytes</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer&nbsp;array)</code></th>
<td class="colLast">
<div class="block">Returns the size of data in an indexable object, in bytes, including leaves, excluding the header.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static <a href="../pointer/VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getElementAddress(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer,int,int)">getElementAddress</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer&nbsp;indexableObjectPointer,
int&nbsp;elementIndex,
int&nbsp;elementSize)</code></th>
<td class="colLast">
<div class="block">Returns the address of an element.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHashcodeOffset(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getHashcodeOffset</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHeaderSize(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getHeaderSize</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the size of an object header, in bytes.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getObjectAlignmentInBytes()">getObjectAlignmentInBytes</a></span>()</code></th>
<td class="colLast">
<div class="block">Object size should be at least minimumConsumedSize
and 8 byte aligned.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static <a href="../types/I32.html" title="class in com.ibm.j9ddr.vm29.types">I32</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getObjectHashCode(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getObjectHashCode</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Determine the basic hash code for the specified object.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRememberedBits(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getRememberedBits</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the collector bits from object's header.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>static long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getScanType(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getScanType</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSizeInBytesDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesDeadObject</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the size in bytes of a dead object.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSizeInBytesMultiSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesMultiSlotDeadObject</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the size, in bytes, of a multi-slot dead object.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSizeInBytesSingleSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesSingleSlotDeadObject</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the size, in bytes, of a single slot dead object.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSizeInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesWithHeader</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the size of an object, in bytes, including the header.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSizeInElements(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInElements</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the size of an indexable object in elements.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code><a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSizeInSlotsWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInSlotsWithHeader</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns the size of an object, in slots, including the header.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>static <a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTotalFootprintInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getTotalFootprintInBytesWithHeader</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Get the total footprint of an object, in bytes, including the object header and all data.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasBeenHashed(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">hasBeenHashed</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an object has been hashed, FALSE otherwise.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasBeenMoved(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">hasBeenMoved</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an object has been moved after being hashed, FALSE otherwise.</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isDeadObject</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an object is dead, FALSE otherwise.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer)">isIndexable</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer&nbsp;clazz)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an class is indexable, FALSE otherwise.</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isIndexable</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an object is indexable, FALSE otherwise.</div>
</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isOld(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isOld</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an object is old, FALSE otherwise.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isPointerInHeap(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer,com.ibm.j9ddr.vm29.pointer.AbstractPointer)">isPointerInHeap</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer&nbsp;javaVM,
<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer)</code></th>
<td class="colLast">
<div class="block">Returns true if a pointer is in stored in heap.</div>
</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isPointerInRegion(com.ibm.j9ddr.vm29.pointer.AbstractPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionDescriptor)">isPointerInRegion</a></span>&#8203;(<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer,
<a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a>&nbsp;region)</code></th>
<td class="colLast">
<div class="block">Returns true if a pointer is in stored in specified region.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isRemembered(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isRemembered</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an object is remembered, FALSE otherwise.</div>
</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isSingleSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isSingleSlotDeadObject</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Returns TRUE if an object is a dead single slot object, FALSE otherwise.</div>
</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code>static <a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#regionForAddress(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionManager,com.ibm.j9ddr.vm29.pointer.AbstractPointer)">regionForAddress</a></span>&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer&nbsp;javaVM,
<a href="gc/GCHeapRegionManager.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionManager</a>&nbsp;hrm,
<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer)</code></th>
<td class="colLast">
<div class="block">Returns the heap region for address of a pointer.</div>
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<h3>Methods declared in class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink" target="_blank">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink" target="_blank">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink" target="_blank">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink" target="_blank">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink" target="_blank">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink" target="_blank">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink" target="_blank">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink" target="_blank">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a></code></li>
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</ul>
</section>
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<h3>Field Detail</h3>
<a id="gcObjectModel">
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<h4>gcObjectModel</h4>
<pre>protected static final&nbsp;<a href="gc/GCObjectModel.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCObjectModel</a> gcObjectModel</pre>
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<h4>adjustSizeInBytes</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;adjustSizeInBytes&#8203;(<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;sizeInBytes)</pre>
<div class="block">Object size should be at least minimumConsumedSize
and 8 byte aligned.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sizeInBytes</code> - Real size of an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Adjusted size</dd>
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<pre class="methodSignature">public static&nbsp;long&nbsp;getObjectAlignmentInBytes()</pre>
<div class="block">Object size should be at least minimumConsumedSize
and 8 byte aligned.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sizeInBytes</code> - Real size of an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Adjusted size</dd>
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<h4>getClassShape</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getClassShape&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the shape of an object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to object whose shape is required.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The shape of the object</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<h4>getClassShape</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getClassShape&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer&nbsp;clazz)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the shape of an object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>clazz</code> - Pointer to J9Class whose shape is required.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The shape of the object</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isIndexable&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an object is indexable, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an object is indexable, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<h4>isIndexable</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isIndexable&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer&nbsp;clazz)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an class is indexable, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>clazz</code> - Pointer to an J9Class</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an class is indexable, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isDeadObject&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an object is dead, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an object is dead, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<h4>isSingleSlotDeadObject</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isSingleSlotDeadObject&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an object is a dead single slot object, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an object is a dead single slot object, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<h4>getSizeInBytesMultiSlotDeadObject</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getSizeInBytesMultiSlotDeadObject&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the size, in bytes, of a multi-slot dead object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The size, in bytes, of a multi-slot dead object</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<h4>getSizeInBytesSingleSlotDeadObject</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getSizeInBytesSingleSlotDeadObject&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)</pre>
<div class="block">Returns the size, in bytes, of a single slot dead object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The size, in bytes, of a single slot dead object</dd>
</dl>
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<h4>getSizeInBytesDeadObject</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getSizeInBytesDeadObject&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the size in bytes of a dead object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The size in bytes of a dead object</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
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<h4>getSizeInBytesWithHeader</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getSizeInBytesWithHeader&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the size of an object, in bytes, including the header.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The size of an object, in bytes, including the header</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<h4>getTotalFootprintInBytesWithHeader</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getTotalFootprintInBytesWithHeader&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Get the total footprint of an object, in bytes, including the object header and all data.
If the object has a discontiguous representation, this method should return the size of
the root object plus the total of all the discontiguous parts of the object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>object</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the total size of an object, in bytes, including discontiguous parts</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
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<h4>getConsumedSizeInBytesWithHeader</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getConsumedSizeInBytesWithHeader&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Same as getSizeInBytesWithHeader,
except it takes into account
object alignment and minimum object size</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The consumed heap size of an object, in bytes, including the header</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
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<h4>getSizeInSlotsWithHeader</h4>
<pre class="methodSignature">public&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getSizeInSlotsWithHeader&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the size of an object, in slots, including the header.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The size of an object, in slots, including the header</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getConsumedSizeInSlotsWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>getConsumedSizeInSlotsWithHeader</h4>
<pre class="methodSignature">public&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getConsumedSizeInSlotsWithHeader&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Same as getSizeInSlotsWithHeader,
except it takes into account
object alignment and minimum object size</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The consumed heap size of an object, in slots, including the header</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getAge(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>getAge</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/U32.html" title="class in com.ibm.j9ddr.vm29.types">U32</a>&nbsp;getAge&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the age of an object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The age of the object</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="isRemembered(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>isRemembered</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isRemembered&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an object is remembered, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an object is remembered, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getRememberedBits(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>getRememberedBits</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getRememberedBits&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the collector bits from object's header.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>collector bits</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="isOld(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>isOld</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isOld&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an object is old, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an object is in the old area, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getSizeInElements(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>getSizeInElements</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getSizeInElements&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">IllegalArgumentException</a>,
<a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the size of an indexable object in elements.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>array</code> - Pointer to the indexable object whose size is required</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Size of object in elements</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">IllegalArgumentException</a></code> - if the object is not an array</dd>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getScanType(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<ul class="blockList">
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<h4>getScanType</h4>
<pre class="methodSignature">public static&nbsp;long&nbsp;getScanType&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="hasBeenHashed(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>hasBeenHashed</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;hasBeenHashed&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an object has been hashed, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an object has been hashed, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
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<h4>hasBeenMoved</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;hasBeenMoved&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns TRUE if an object has been moved after being hashed, FALSE otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>TRUE if an object has been moved after being hashed, FALSE otherwise</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getObjectHashCode(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<h4>getObjectHashCode</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/I32.html" title="class in com.ibm.j9ddr.vm29.types">I32</a>&nbsp;getObjectHashCode&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Determine the basic hash code for the specified object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>object</code> - [in] the object to be hashed</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the persistent, basic hash code for the object</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getHashcodeOffset(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<li class="blockList">
<h4>getHashcodeOffset</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getHashcodeOffset&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getDataSizeInBytes(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer)">
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<h4>getDataSizeInBytes</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getDataSizeInBytes&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer&nbsp;array)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the size of data in an indexable object, in bytes, including leaves, excluding the header.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>array</code> - pointer to the indexable object whose size is required</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the size of an object in bytes excluding the header</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getHeaderSize(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">
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<ul class="blockList">
<li class="blockList">
<h4>getHeaderSize</h4>
<pre class="methodSignature">public static&nbsp;<a href="../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a>&nbsp;getHeaderSize&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer&nbsp;object)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the size of an object header, in bytes.
<p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>objectPtr</code> - Pointer to an object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The size of an object header, in bytes.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="getElementAddress(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer,int,int)">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>getElementAddress</h4>
<pre class="methodSignature">public static&nbsp;<a href="../pointer/VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a>&nbsp;getElementAddress&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer&nbsp;indexableObjectPointer,
int&nbsp;elementIndex,
int&nbsp;elementSize)
throws <a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre>
<div class="block">Returns the address of an element.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>indexableObjectPointer</code> - Pointer to a J9 indexable object</dd>
<dd><code>elementIndex</code> - Index of the element</dd>
<dd><code>elementSize</code> - Size of the element</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The address of an element.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd>
</dl>
</li>
</ul>
<a id="findRegionForPointer(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionManager,com.ibm.j9ddr.vm29.pointer.AbstractPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionDescriptor)">
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<h4>findRegionForPointer</h4>
<pre class="methodSignature">public static&nbsp;<a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a>&nbsp;findRegionForPointer&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer&nbsp;javaVM,
<a href="gc/GCHeapRegionManager.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionManager</a>&nbsp;hrm,
<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer,
<a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a>&nbsp;region)</pre>
<div class="block">Returns the heap region of a pointer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>javaVM</code> - J9JavaVMPointer</dd>
<dd><code>hrm</code> - The gc heap region manager</dd>
<dd><code>pointer</code> - Any abstract pointer</dd>
<dd><code>region</code> - A gc heap region descriptor</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The heap region descriptor of the given pointer.</dd>
</dl>
</li>
</ul>
<a id="regionForAddress(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionManager,com.ibm.j9ddr.vm29.pointer.AbstractPointer)">
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<h4>regionForAddress</h4>
<pre class="methodSignature">public static&nbsp;<a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a>&nbsp;regionForAddress&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer&nbsp;javaVM,
<a href="gc/GCHeapRegionManager.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionManager</a>&nbsp;hrm,
<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer)</pre>
<div class="block">Returns the heap region for address of a pointer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>javaVM</code> - J9JavaVMPointer</dd>
<dd><code>hrm</code> - The gc heap region manager</dd>
<dd><code>pointer</code> - Any abstract pointer</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The heap region descriptor for address of a pointer.</dd>
</dl>
</li>
</ul>
<a id="isPointerInRegion(com.ibm.j9ddr.vm29.pointer.AbstractPointer,com.ibm.j9ddr.vm29.j9.gc.GCHeapRegionDescriptor)">
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<ul class="blockList">
<li class="blockList">
<h4>isPointerInRegion</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isPointerInRegion&#8203;(<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer,
<a href="gc/GCHeapRegionDescriptor.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCHeapRegionDescriptor</a>&nbsp;region)</pre>
<div class="block">Returns true if a pointer is in stored in specified region.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pointer</code> - Any abstract pointer</dd>
<dd><code>region</code> - Descriptor for a region in heap</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>If the AbstractPointer pointer is in stored in the given region in heap.</dd>
</dl>
</li>
</ul>
<a id="isPointerInHeap(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer,com.ibm.j9ddr.vm29.pointer.AbstractPointer)">
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<li class="blockList">
<h4>isPointerInHeap</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isPointerInHeap&#8203;(com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer&nbsp;javaVM,
<a href="../pointer/AbstractPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">AbstractPointer</a>&nbsp;pointer)</pre>
<div class="block">Returns true if a pointer is in stored in heap.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>javaVM</code> - J9JavaVMPointer</dd>
<dd><code>pointer</code> - Any abstract pointer</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>If the AbstractPointer pointer is in stored in heap.</dd>
</dl>
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