api/jdk16/openj9.dtfj/com/ibm/dtfj/java/JavaRuntime.html - gerrit/www.eclipse.org/openj9/docs - Git at Google

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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 JavaRuntime" class="title">Interface JavaRuntime</h1>
 </div>
 <section class="description">
 <dl class="notes">
 <dt>All Superinterfaces:</dt>
 <dd><code><a href="../runtime/ManagedRuntime.html" title="interface in com.ibm.dtfj.runtime">ManagedRuntime</a></code></dd>
 </dl>
 <dl class="notes">
 <dt>All Known Implementing Classes:</dt>
 <dd><code><a href="../../j9ddr/vm29/view/dtfj/java/DTFJJavaRuntime.html" title="class in com.ibm.j9ddr.vm29.view.dtfj.java">DTFJJavaRuntime</a></code>, <code><a href="j9/JavaRuntime.html" title="class in com.ibm.dtfj.java.j9">JavaRuntime</a></code>, <code><a href="javacore/JCJavaRuntime.html" title="class in com.ibm.dtfj.java.javacore">JCJavaRuntime</a></code></dd>
 </dl>
 <hr>
 <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">JavaRuntime</span><span class="extends-implements">
 extends <a href="../runtime/ManagedRuntime.html" title="interface in com.ibm.dtfj.runtime">ManagedRuntime</a></span></div>
 <div class="block">Represents a Java runtime.</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><button id="method-summary-table-tab5" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab5', 3)" class="table-tab">Default 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>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/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="#getCompiledMethods()">getCompiledMethods</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">This is short cut method.</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="#getHeapRoots()">getHeapRoots</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 object and class roots known to the VM.</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="#getHeaps()">getHeaps</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 heaps known by the VM</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="#getJavaClassLoaders()">getJavaClassLoaders</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 class loaders active in this VM</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="../image/ImagePointer.html" title="interface in com.ibm.dtfj.image">ImagePointer</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="#getJavaVM()">getJavaVM</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 object that represents the virtual machine</div>
 </div>
 <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="JavaVMInitArgs.html" title="interface in com.ibm.dtfj.java">JavaVMInitArgs</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="#getJavaVMInitArgs()">getJavaVMInitArgs</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">Fetch the JavaVMInitArgs which were used to create this VM.</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/Properties.html" title="class or interface in java.util" class="external-link" target="_blank">Properties</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="#getJITProperties()">getJITProperties</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 any vendor specific properties in use by the JIT for this Java runtime</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="#getMemoryCategories()">getMemoryCategories</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">Returns iterator of the top-level memory categories used by this
  Java runtime.</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="#getMemorySections(boolean)">getMemorySections</a></span>&#8203;(boolean&nbsp;includeFreed)</code></div>
 <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Returns an iterator of JavaRuntimeMemorySection objects corresponding to the blocks of memory allocated by the JavaRuntime.</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="#getMonitors()">getMonitors</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">Provides access to the collection of monitors used in the JavaVM.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="JavaObject.html" title="interface in com.ibm.dtfj.java">JavaObject</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="#getObjectAtAddress(com.ibm.dtfj.image.ImagePointer)">getObjectAtAddress</a></span>&#8203;(<a href="../image/ImagePointer.html" title="interface in com.ibm.dtfj.image">ImagePointer</a>&nbsp;address)</code></div>
 <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Gets the object located at address <code>address</code> in the heap.</div>
 </div>
 <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>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="#getStartTime()">getStartTime</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 time when the JVM was started.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>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="#getStartTimeNanos()">getStartTimeNanos</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 value of the JVM's high-resolution timer when the JVM was started.</div>
 </div>
 <div class="col-first even-row-color method-summary-table-tab2 method-summary-table-tab5 method-summary-table"><code>default <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 even-row-color method-summary-table-tab2 method-summary-table-tab5 method-summary-table"><code><span class="member-name-link"><a href="#getSystemProperty(java.lang.String)">getSystemProperty</a></span>&#8203;(<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>&nbsp;key)</code></div>
 <div class="col-last even-row-color method-summary-table-tab2 method-summary-table-tab5 method-summary-table">
 <div class="block">Get a system property of the virtual machine.</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="#getThreads()">getThreads</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 Java threads known by the VM</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/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</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="#getTraceBuffer(java.lang.String,boolean)">getTraceBuffer</a></span>&#8203;(<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>&nbsp;bufferName,
  boolean&nbsp;formatted)</code></div>
 <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Fetches implementation specific trace buffers, like the verbose GC buffer
  or the Universal Trace Engine (UTE) buffer</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>int</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="#hashCode()">hashCode</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">Answers an integer hash code for the receiver.</div>
 </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="#isJITEnabled()">isJITEnabled</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">Determine if the JIT was enabled for this Java runtime.</div>
 </div>
 </div>
 </div>
 </div>
 <div class="inherited-list">
 <h3 id="methods.inherited.from.class.com.ibm.dtfj.runtime.ManagedRuntime">Methods declared in interface&nbsp;com.ibm.dtfj.runtime.<a href="../runtime/ManagedRuntime.html" title="interface in com.ibm.dtfj.runtime">ManagedRuntime</a></h3>
 <code><a href="../runtime/ManagedRuntime.html#getFullVersion()">getFullVersion</a>, <a href="../runtime/ManagedRuntime.html#getVersion()">getVersion</a></code></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="getJavaVM()">
 <h3>getJavaVM</h3>
 <div class="member-signature"><span class="return-type"><a href="../image/ImagePointer.html" title="interface in com.ibm.dtfj.image">ImagePointer</a></span>&nbsp;<span class="element-name">getJavaVM</span>()
                 throws <span class="exceptions"><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the object that represents the virtual machine</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>the address of the JavaVM structure which represents this JVM instance in JNI</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getSystemProperty(java.lang.String)">
 <h3>getSystemProperty</h3>
 <div class="member-signature"><span class="modifiers">default</span>&nbsp;<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">getSystemProperty</span>&#8203;<span class="parameters">(<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>&nbsp;key)</span>
                           throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get a system property of the virtual machine.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>key</code> - the name of the property to retrieve</dd>
 <dt>Returns:</dt>
 <dd>the value of the requested system property from this VM</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code> - if the system properties are not available</dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getJavaVMInitArgs()">
 <h3>getJavaVMInitArgs</h3>
 <div class="member-signature"><span class="return-type"><a href="JavaVMInitArgs.html" title="interface in com.ibm.dtfj.java">JavaVMInitArgs</a></span>&nbsp;<span class="element-name">getJavaVMInitArgs</span>()
                           throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Fetch the JavaVMInitArgs which were used to create this VM.
  See JNI_CreateJavaVM in the JNI Specification for more details.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>the JavaVMInitArgs which were used to create this VM.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code> - if the arguments are not available</dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getJavaClassLoaders()">
 <h3>getJavaClassLoaders</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">getJavaClassLoaders</span>()</div>
 <div class="block">Get the set of class loaders active in this VM</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an iterator of all of the class loaders within this JavaVM</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaClassLoader.html" title="interface in com.ibm.dtfj.java"><code>JavaClassLoader</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="getThreads()">
 <h3>getThreads</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">getThreads</span>()</div>
 <div class="block">Get the set of Java threads known by the VM</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an iterator of the JavaThreads in the runtime</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaThread.html" title="interface in com.ibm.dtfj.java"><code>JavaThread</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="getCompiledMethods()">
 <h3>getCompiledMethods</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">getCompiledMethods</span>()</div>
 <div class="block">This is short cut method. The same result can be found by iterating over all
  methods in all class loaders in all classes.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an iterator over all of the JavaMethods in the JavaRuntime which
  have been compiled</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaMethod.html" title="interface in com.ibm.dtfj.java"><code>JavaMethod</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="getMonitors()">
 <h3>getMonitors</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">getMonitors</span>()</div>
 <div class="block">Provides access to the collection of monitors used in the JavaVM. This
  collection includes both monitors associated with managed objects (e.g. object
  monitors) and monitors associated with internal control structures (e.g.
  raw monitors)</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an iterator over the collection of monitors</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaMonitor.html" title="interface in com.ibm.dtfj.java"><code>JavaMonitor</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="getHeaps()">
 <h3>getHeaps</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">getHeaps</span>()</div>
 <div class="block">Get the set of heaps known by the VM</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an iterator for all of the Java heaps within this runtime. Heaps
  may be specific to this JavaVM instance, or may be shared between multiple
  JavaVM instances</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaHeap.html" title="interface in com.ibm.dtfj.java"><code>JavaHeap</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="getHeapRoots()">
 <h3>getHeapRoots</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">getHeapRoots</span>()</div>
 <div class="block">Get the set of object and class roots known to the VM.
  Stack frame roots are not included in the set, they can be retrieved using JavaStackFrame.getHeapRoots().</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an iterator over the collection of JavaReferences representing the known global heap roots within this runtime.</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaReference.html" title="interface in com.ibm.dtfj.java"><code>JavaReference</code></a>,
 <a href="JavaStackFrame.html" title="interface in com.ibm.dtfj.java"><code>JavaStackFrame</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="getTraceBuffer(java.lang.String,boolean)">
 <h3>getTraceBuffer</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/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></span>&nbsp;<span class="element-name">getTraceBuffer</span>&#8203;<span class="parameters">(<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>&nbsp;bufferName,
  boolean&nbsp;formatted)</span>
                throws <span class="exceptions"><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Fetches implementation specific trace buffers, like the verbose GC buffer
  or the Universal Trace Engine (UTE) buffer</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>bufferName</code> - a String naming the buffer to be fetched</dd>
 <dd><code>formatted</code> - true if formatting should be performed on the buffer, or
  false if the raw buffer contents should be returned</dd>
 <dt>Returns:</dt>
 <dd>an implementation specific result, depending on the parameters</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getObjectAtAddress(com.ibm.dtfj.image.ImagePointer)">
 <h3>getObjectAtAddress</h3>
 <div class="member-signature"><span class="return-type"><a href="JavaObject.html" title="interface in com.ibm.dtfj.java">JavaObject</a></span>&nbsp;<span class="element-name">getObjectAtAddress</span>&#8203;<span class="parameters">(<a href="../image/ImagePointer.html" title="interface in com.ibm.dtfj.image">ImagePointer</a>&nbsp;address)</span>
                        throws <span class="exceptions"><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a>,
 <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="../image/MemoryAccessException.html" title="class in com.ibm.dtfj.image">MemoryAccessException</a>,
 <a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></span></div>
 <div class="block">Gets the object located at address <code>address</code> in the heap.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>address</code> - the <code>ImagePointer</code> instance representing the start address of object in the heap;</dd>
 <dt>Returns:</dt>
 <dd>the <code>JavaObject</code> instance representing the located object.</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  <code>address</code> is outside the heap's boundaries, or if it doesn't point to the start location of an object;</dd>
 <dd><code><a href="../image/MemoryAccessException.html" title="class in com.ibm.dtfj.image">MemoryAccessException</a></code> - if  <code>address</code> is in the heap but it's not accessible from the dump;</dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code> - if any data needed to build the returned instance of <code>JavaObject</code> is corrupt.</dd>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code> - if any data needed to build the returned instance of <code>JavaObject</code> is not available.</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaObject.html" title="interface in com.ibm.dtfj.java"><code>JavaObject</code></a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getMemoryCategories()">
 <h3>getMemoryCategories</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">getMemoryCategories</span>()
                       throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></span></div>
 <div class="block">Returns iterator of the top-level memory categories used by this
  Java runtime.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>Iterator of memory categories</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code></dd>
 <dt>Since:</dt>
 <dd>1.5</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaRuntimeMemoryCategory.html" title="interface in com.ibm.dtfj.java"><code>CorruptData</code></a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getMemorySections(boolean)">
 <h3>getMemorySections</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">getMemorySections</span>&#8203;<span class="parameters">(boolean&nbsp;includeFreed)</span>
                     throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></span></div>
 <div class="block">Returns an iterator of JavaRuntimeMemorySection objects corresponding to the blocks of memory allocated by the JavaRuntime.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>includeFreed</code> - If true, iterator will iterate over blocks of memory that have been freed, but haven't been re-used yet.</dd>
 <dt>Returns:</dt>
 <dd>Iterator of memory sections.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code></dd>
 <dt>Since:</dt>
 <dd>1.5</dd>
 <dt>See Also:</dt>
 <dd><a href="JavaRuntimeMemorySection.html" title="interface in com.ibm.dtfj.java"><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 Runtime 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>
 <li>
 <section class="detail" id="isJITEnabled()">
 <h3>isJITEnabled</h3>
 <div class="member-signature"><span class="return-type">boolean</span>&nbsp;<span class="element-name">isJITEnabled</span>()
               throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Determine if the JIT was enabled for this Java runtime.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>true if the JIT was enabled, false if not</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code> - if it is not possible to determine the JIT status</dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 <dt>Since:</dt>
 <dd>1.8</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getJITProperties()">
 <h3>getJITProperties</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/Properties.html" title="class or interface in java.util" class="external-link" target="_blank">Properties</a></span>&nbsp;<span class="element-name">getJITProperties</span>()
                      throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get any vendor specific properties in use by the JIT for this Java runtime</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>the set of properties, which may be empty if none were set.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code> - if the JIT was not enabled for this runtime</dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 <dt>Since:</dt>
 <dd>1.8</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getStartTime()">
 <h3>getStartTime</h3>
 <div class="member-signature"><span class="return-type">long</span>&nbsp;<span class="element-name">getStartTime</span>()
            throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the time when the JVM was started.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>the time the JVM was started, in milliseconds since 1970</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code> - if the JVM start time is not available</dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code> - if the JVM start time is corrupted</dd>
 <dt>Since:</dt>
 <dd>1.12</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getStartTimeNanos()">
 <h3>getStartTimeNanos</h3>
 <div class="member-signature"><span class="return-type">long</span>&nbsp;<span class="element-name">getStartTimeNanos</span>()
                 throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the value of the JVM's high-resolution timer when the JVM was started.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>the value of the high-resolution timer when the JVM was started, in nanoseconds</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code> - if the JVM start time is not available</dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code> - if the JVM start time is corrupted</dd>
 <dt>Since:</dt>
 <dd>1.12</dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </section>
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