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| <meta name="keywords" content="from()"> |
| <meta name="keywords" content="adjustSizeInBytes()"> |
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| <meta name="keywords" content="isSingleSlotDeadObject()"> |
| <meta name="keywords" content="getSizeInBytesMultiSlotDeadObject()"> |
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| <meta name="keywords" content="getAge()"> |
| <meta name="keywords" content="isRemembered()"> |
| <meta name="keywords" content="getRememberedBits()"> |
| <meta name="keywords" content="isOld()"> |
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| <div class="sub-title"><span class="module-label-in-type">Module</span> <a href="../../../../../../module-summary.html">openj9.dtfj</a></div> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">com.ibm.j9ddr.vm29.j9.gc</a></div> |
| <h1 title="Class GCObjectModel" class="title">Class GCObjectModel</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">java.lang.Object</a> |
| <div class="inheritance"><a href="GCBase.html" title="class in com.ibm.j9ddr.vm29.j9.gc">com.ibm.j9ddr.vm29.j9.gc.GCBase</a> |
| <div class="inheritance">com.ibm.j9ddr.vm29.j9.gc.GCObjectModel</div> |
| </div> |
| </div> |
| <section class="description"> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">GCObjectModel</span> |
| <span class="extends-implements">extends <a href="GCBase.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCBase</a></span></div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| <section class="field-summary" id="field.summary"> |
| <h2>Field Summary</h2> |
| <div class="caption"><span>Fields</span></div> |
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| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Field</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>protected com.ibm.j9ddr.vm29.j9.gc.GCArrayObjectModel</code></div> |
| <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#indexableObjectModel">indexableObjectModel</a></span></code></div> |
| <div class="col-last even-row-color"> </div> |
| <div class="col-first odd-row-color"><code>protected com.ibm.j9ddr.vm29.j9.gc.GCMixedObjectModel</code></div> |
| <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#mixedObjectModel">mixedObjectModel</a></span></code></div> |
| <div class="col-last odd-row-color"> </div> |
| </div> |
| </section> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| <section class="constructor-summary" id="constructor.summary"> |
| <h2>Constructor Summary</h2> |
| <div class="caption"><span>Constructors</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier</div> |
| <div class="table-header col-second">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>protected </code></div> |
| <div class="col-constructor-name even-row-color"><code><span class="member-name-link"><a href="#%3Cinit%3E()">GCObjectModel</a></span>()</code></div> |
| <div class="col-last even-row-color"> </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <section class="method-summary" id="method.summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#adjustSizeInBytes(com.ibm.j9ddr.vm29.types.UDATA)">adjustSizeInBytes</a></span>​(<a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a> sizeInBytes)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Object size should be at least minimumConsumedSize |
| and 8 byte aligned.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"><code>static <a href="GCObjectModel.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCObjectModel</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#from()">from</a></span>()</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab1 method-summary-table-tab4 method-summary-table"> |
| <div class="block">Factory method to construct an appropriate object model.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/U32.html" title="class in com.ibm.j9ddr.vm29.types">U32</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getAge(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getAge</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the age of an object.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getClassShape(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer)">getClassShape</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the shape of a class.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getClassShape(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getClassShape</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the shape of an object.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getConsumedSizeInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getConsumedSizeInBytesWithHeader</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Same as getSizeInBytesWithHeader, |
| except it takes into account |
| object alignment and minimum object size</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#getConsumedSizeInSlotsWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getConsumedSizeInSlotsWithHeader</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"> |
| <div class="block">Same as getSizeInSlotsWithHeader, |
| except it takes into account |
| object alignment and minimum object size</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#getDataSizeInBytes(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer)">getDataSizeInBytes</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer array)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"> |
| <div class="block">Returns the size of data in an indexable object, in bytes, including leaves, excluding the header.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../pointer/VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getElementAddress(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer,int,int)">getElementAddress</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer indexableObjectPointer, |
| int elementIndex, |
| int elementSize)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the address of the element at elementIndex logical offset into indexableObjectPointer, assuming that each |
| element is dataSize bytes.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getHashcodeOffset(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getHashcodeOffset</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getHeaderSize(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getHeaderSize</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the size of an object header, in bytes.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract long</code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getObjectAlignmentInBytes()">getObjectAlignmentInBytes</a></span>()</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns run-time object alignment in bytes.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/I32.html" title="class in com.ibm.j9ddr.vm29.types">I32</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getObjectHashCode(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getObjectHashCode</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Determine the basic hash code for the specified object.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getRememberedBits(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getRememberedBits</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the collector bits from object's header.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract long</code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getScanType(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getScanType</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getSizeInBytesDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesDeadObject</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the size in bytes of a dead object.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getSizeInBytesMultiSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesMultiSlotDeadObject</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the size, in bytes, of a multi-slot dead object.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getSizeInBytesSingleSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesSingleSlotDeadObject</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the size, in bytes, of a single slot dead object.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getSizeInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInBytesWithHeader</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the size of an object, in bytes, including the header.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getSizeInElements(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInElements</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns the size of an indexable object in elements.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"><code><span class="member-name-link"><a href="#getSizeInSlotsWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getSizeInSlotsWithHeader</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table-tab4 method-summary-table"> |
| <div class="block">Returns the size of an object, in slots, including the header.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getTotalFootprintInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">getTotalFootprintInBytesWithHeader</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Get the total footprint of an object, in bytes, including the object header and all data.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#hasBeenHashed(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">hasBeenHashed</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an object has been hashed, FALSE otherwise.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#hasBeenMoved(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">hasBeenMoved</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an object has been moved after being hashed, FALSE otherwise.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isDeadObject</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an object is dead, FALSE otherwise.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer)">isIndexable</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an class is indexable, FALSE otherwise.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isIndexable</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an object is indexable, FALSE otherwise.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isOld(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isOld</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an object is old, FALSE otherwise.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isRemembered(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isRemembered</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an object is remembered, FALSE otherwise.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>abstract boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isSingleSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)">isSingleSlotDeadObject</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Returns TRUE if an object is a dead single slot object, FALSE otherwise.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods.inherited.from.class.com.ibm.j9ddr.vm29.j9.gc.GCBase">Methods declared in class com.ibm.j9ddr.vm29.j9.gc.<a href="GCBase.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCBase</a></h3> |
| <code><a href="GCBase.html#getExtensions()">getExtensions</a>, <a href="GCBase.html#getJavaVM()">getJavaVM</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods.inherited.from.class.java.lang.Object">Methods declared in class java.lang.<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link" target="_blank">clone</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link" target="_blank">equals</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link" target="_blank">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link" target="_blank">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link" target="_blank">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link" target="_blank">notify</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link" target="_blank">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link" target="_blank">toString</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link" target="_blank">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <li> |
| <section class="field-details" id="field.detail"> |
| <h2>Field Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="mixedObjectModel"> |
| <h3>mixedObjectModel</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type">com.ibm.j9ddr.vm29.j9.gc.GCMixedObjectModel</span> <span class="element-name">mixedObjectModel</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="indexableObjectModel"> |
| <h3>indexableObjectModel</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type">com.ibm.j9ddr.vm29.j9.gc.GCArrayObjectModel</span> <span class="element-name">indexableObjectModel</span></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor.detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>()"> |
| <h3>GCObjectModel</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="element-name">GCObjectModel</span>() |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method.detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="from()"> |
| <h3>from</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="GCObjectModel.html" title="class in com.ibm.j9ddr.vm29.j9.gc">GCObjectModel</a></span> <span class="element-name">from</span>() |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Factory method to construct an appropriate object model.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>structure</code> - the J9JavaVM structure to use</dd> |
| <dt>Returns:</dt> |
| <dd>an instance of ObjectModel</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="adjustSizeInBytes(com.ibm.j9ddr.vm29.types.UDATA)"> |
| <h3>adjustSizeInBytes</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">adjustSizeInBytes</span>​<span class="parameters">(<a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a> sizeInBytes)</span></div> |
| <div class="block">Object size should be at least minimumConsumedSize |
| and 8 byte aligned.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>sizeInBytes</code> - Real size of an object</dd> |
| <dt>Returns:</dt> |
| <dd>Adjusted size</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getClassShape(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getClassShape</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getClassShape</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the shape of an object.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to object whose shape is required.</dd> |
| <dt>Returns:</dt> |
| <dd>The shape of the object</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getClassShape(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer)"> |
| <h3>getClassShape</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getClassShape</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the shape of a class.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to J9Object whose shape is required.</dd> |
| <dt>Returns:</dt> |
| <dd>The shape of the class</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>isIndexable</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">isIndexable</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an object is indexable, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an object is indexable, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isIndexable(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer)"> |
| <h3>isIndexable</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">isIndexable</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an class is indexable, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>clazz</code> - Pointer to an J9Class</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an class is indexable, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>isDeadObject</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">isDeadObject</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an object is dead, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an object is dead, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isSingleSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>isSingleSlotDeadObject</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">isSingleSlotDeadObject</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an object is a dead single slot object, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an object is a dead single slot object, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSizeInBytesMultiSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getSizeInBytesMultiSlotDeadObject</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getSizeInBytesMultiSlotDeadObject</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the size, in bytes, of a multi-slot dead object.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The size, in bytes, of a multi-slot dead object</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSizeInBytesSingleSlotDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getSizeInBytesSingleSlotDeadObject</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getSizeInBytesSingleSlotDeadObject</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span></div> |
| <div class="block">Returns the size, in bytes, of a single slot dead object.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The size, in bytes, of a single slot dead object</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getObjectAlignmentInBytes()"> |
| <h3>getObjectAlignmentInBytes</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">long</span> <span class="element-name">getObjectAlignmentInBytes</span>()</div> |
| <div class="block">Returns run-time object alignment in bytes.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>The alignment in bytes</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSizeInBytesDeadObject(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getSizeInBytesDeadObject</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getSizeInBytesDeadObject</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the size in bytes of a dead object.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The size in bytes of a dead object</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSizeInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getSizeInBytesWithHeader</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getSizeInBytesWithHeader</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the size of an object, in bytes, including the header.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The size of an object, in bytes, including the header</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getTotalFootprintInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getTotalFootprintInBytesWithHeader</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getTotalFootprintInBytesWithHeader</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <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 class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>object</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>the total size of an object, in bytes, including discontiguous parts</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getConsumedSizeInBytesWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getConsumedSizeInBytesWithHeader</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getConsumedSizeInBytesWithHeader</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Same as getSizeInBytesWithHeader, |
| except it takes into account |
| object alignment and minimum object size</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The consumed heap size of an object, in bytes, including the header</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSizeInSlotsWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getSizeInSlotsWithHeader</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getSizeInSlotsWithHeader</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the size of an object, in slots, including the header.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The size of an object, in slots, including the header</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getConsumedSizeInSlotsWithHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getConsumedSizeInSlotsWithHeader</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getConsumedSizeInSlotsWithHeader</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Same as getSizeInSlotsWithHeader, |
| except it takes into account |
| object alignment and minimum object size</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The consumed heap size of an object, in slots, including the header</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getAge(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getAge</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/U32.html" title="class in com.ibm.j9ddr.vm29.types">U32</a></span> <span class="element-name">getAge</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the age of an object.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The age of the object</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isRemembered(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>isRemembered</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">isRemembered</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an object is remembered, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an object is remembered, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getRememberedBits(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getRememberedBits</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getRememberedBits</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the collector bits from object's header.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>collector bits</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="isOld(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>isOld</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">isOld</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an object is old, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an object is in the old area, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSizeInElements(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getSizeInElements</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getSizeInElements</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link" target="_blank">IllegalArgumentException</a>, |
| <a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the size of an indexable object in elements.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>array</code> - Pointer to the indexable object whose size is required</dd> |
| <dt>Returns:</dt> |
| <dd>Size of object in elements</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link" 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> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getScanType(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getScanType</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">long</span> <span class="element-name">getScanType</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="hasBeenHashed(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>hasBeenHashed</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">hasBeenHashed</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an object has been hashed, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an object has been hashed, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="hasBeenMoved(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>hasBeenMoved</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type">boolean</span> <span class="element-name">hasBeenMoved</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns TRUE if an object has been moved after being hashed, FALSE otherwise.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>TRUE if an object has been moved after being hashed, FALSE otherwise</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getObjectHashCode(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getObjectHashCode</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/I32.html" title="class in com.ibm.j9ddr.vm29.types">I32</a></span> <span class="element-name">getObjectHashCode</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Determine the basic hash code for the specified object.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>object</code> - [in] the object to be hashed</dd> |
| <dt>Returns:</dt> |
| <dd>the persistent, basic hash code for the object</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getHashcodeOffset(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getHashcodeOffset</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getHashcodeOffset</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getDataSizeInBytes(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer)"> |
| <h3>getDataSizeInBytes</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getDataSizeInBytes</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer array)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the size of data in an indexable object, in bytes, including leaves, excluding the header.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>array</code> - Pointer to the indexable object whose size is required</dd> |
| <dt>Returns:</dt> |
| <dd>The size of an object in bytes excluding the header</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getHeaderSize(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer)"> |
| <h3>getHeaderSize</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></span> <span class="element-name">getHeaderSize</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9ObjectPointer object)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the size of an object header, in bytes.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>objectPtr</code> - Pointer to an object</dd> |
| <dt>Returns:</dt> |
| <dd>The size of an object header, in bytes.</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getElementAddress(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer,int,int)"> |
| <h3>getElementAddress</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="../../pointer/VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a></span> <span class="element-name">getElementAddress</span>​<span class="parameters">(com.ibm.j9ddr.vm29.pointer.generated.J9IndexableObjectPointer indexableObjectPointer, |
| int elementIndex, |
| int elementSize)</span> |
| throws <span class="exceptions"><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></span></div> |
| <div class="block">Returns the address of the element at elementIndex logical offset into indexableObjectPointer, assuming that each |
| element is dataSize bytes.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>indexableObjectPointer</code> - The array from which we should look-up the address</dd> |
| <dd><code>elementIndex</code> - The logical index number of the element within the array</dd> |
| <dd><code>elementSize</code> - The size, in bytes, of a single element of the array</dd> |
| <dt>Returns:</dt> |
| <dd>A pointer to the element</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
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