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<div class="sub-title"><span class="module-label-in-type">Module</span>&nbsp;<a href="../../../../module-summary.html">openj9.dtfj</a></div>
<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">com.ibm.dtfj.java</a></div>
<h1 title="Interface JavaHeap" class="title">Interface JavaHeap</h1>
</div>
<section class="description">
<dl class="notes">
<dt>All Known Implementing Classes:</dt>
<dd><code><a href="../../j9ddr/vm29/view/dtfj/java/DTFJJavaHeap.html" title="class in com.ibm.j9ddr.vm29.view.dtfj.java">DTFJJavaHeap</a></code>, <code><a href="j9/JavaHeap.html" title="class in com.ibm.dtfj.java.j9">JavaHeap</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">JavaHeap</span></div>
<div class="block"><p>Represents a heap of managed objects.</p>
<p>There may be multiple heaps within a JVM, for instance a generational
heap and a class heap. Additionally, heaps may consist of non-contiguous
memory regions. For instance, an object heap may be divided into a hot
and cold section.</p></div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ========== METHOD SUMMARY =========== -->
<li>
<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-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></div>
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<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>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="#equals(java.lang.Object)">equals</a></span>&#8203;(<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>&nbsp;obj)</code></div>
<div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
<div class="block">Compares the argument to the receiver, and answers true
if they represent the <em>same</em> object using a class
specific comparison.</div>
</div>
<div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link" target="_blank">String</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="#getName()">getName</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">Get a brief textual description of this heap.</div>
</div>
<div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</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="#getObjects()">getObjects</a></span>()</code></div>
<div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
<div class="block">Get the set of objects which are stored in this heap.</div>
</div>
<div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</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="#getSections()">getSections</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">Get the set of contiguous memory regions which form this heap.</div>
</div>
<div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>int</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="#hashCode()">hashCode</a></span>()</code></div>
<div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
<div class="block">Answers an integer hash code for the receiver.</div>
</div>
</div>
</div>
</div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method.detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="getSections()">
<h3>getSections</h3>
<div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</a></span>&nbsp;<span class="element-name">getSections</span>()</div>
<div class="block">Get the set of contiguous memory regions which form this heap.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>an iterator over the collection of contiguous memory regions
which form this heap</dd>
<dt>See Also:</dt>
<dd><a href="../image/ImageSection.html" title="interface in com.ibm.dtfj.image"><code>ImageSection</code></a>,
<a href="../image/CorruptData.html" title="interface in com.ibm.dtfj.image"><code>CorruptData</code></a></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getName()">
<h3>getName</h3>
<div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link" target="_blank">String</a></span>&nbsp;<span class="element-name">getName</span>()</div>
<div class="block">Get a brief textual description of this heap.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>a brief textual description of this heap</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getObjects()">
<h3>getObjects</h3>
<div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</a></span>&nbsp;<span class="element-name">getObjects</span>()</div>
<div class="block">Get the set of objects which are stored in this heap.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>an iterator over the collection of objects which
are stored in this heap</dd>
<dt>See Also:</dt>
<dd><a href="JavaObject.html" title="interface in com.ibm.dtfj.java"><code>JavaObject</code></a>,
<a href="../image/CorruptData.html" title="interface in com.ibm.dtfj.image"><code>CorruptData</code></a></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="equals(java.lang.Object)">
<h3>equals</h3>
<div class="member-signature"><span class="return-type">boolean</span>&nbsp;<span class="element-name">equals</span>&#8203;<span class="parameters">(<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>&nbsp;obj)</span></div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><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">java.lang.Object</a></code></span></div>
<div class="block">Compares the argument to the receiver, and answers true
if they represent the <em>same</em> object using a class
specific comparison. The implementation in Object answers
true only if the argument is the exact same object as the
receiver (==).</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><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></code>&nbsp;in class&nbsp;<code><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></code></dd>
<dt>Parameters:</dt>
<dd><code>obj</code> - </dd>
<dt>Returns:</dt>
<dd>True if the given object refers to the same Java Heap in the image</dd>
<dt>See Also:</dt>
<dd><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"><code>Object.hashCode()</code></a></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="hashCode()">
<h3>hashCode</h3>
<div class="member-signature"><span class="return-type">int</span>&nbsp;<span class="element-name">hashCode</span>()</div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><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">java.lang.Object</a></code></span></div>
<div class="block">Answers an integer hash code for the receiver. Any two
objects which answer <code>true</code> when passed to
<code>.equals</code> must answer the same value for this
method.</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><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></code>&nbsp;in class&nbsp;<code><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></code></dd>
<dt>Returns:</dt>
<dd>the receiver's hash.</dd>
<dt>See Also:</dt>
<dd><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"><code>Object.equals(java.lang.Object)</code></a></dd>
</dl>
</section>
</li>
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</section>
</li>
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