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| <div class="sub-title"><span class="module-label-in-type">Module</span> <a href="../../../../module-summary.html">jdk.management</a></div> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">com.ibm.lang.management</a></div> |
| <h1 title="Interface ThreadMXBean" class="title">Interface ThreadMXBean</h1> |
| </div> |
| <section class="description"> |
| <dl class="notes"> |
| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/PlatformManagedObject.html" title="class or interface in java.lang.management" class="external-link" target="_blank">PlatformManagedObject</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html" title="class or interface in java.lang.management" class="external-link" target="_blank">ThreadMXBean</a></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="internal/ExtendedThreadMXBeanImpl.html" title="class in com.ibm.lang.management.internal">ExtendedThreadMXBeanImpl</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">ThreadMXBean</span><span class="extends-implements"> |
| extends <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html" title="class or interface in java.lang.management" class="external-link" target="_blank">ThreadMXBean</a></span></div> |
| <div class="block">The OpenJ9 extension interface to <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html" title="class or interface in java.lang.management" class="external-link" target="_blank"><code>ThreadMXBean</code></a>. It publishes |
| APIs specific to <a href="package-summary.html"><code>com.ibm.lang.management</code></a>, exposing additional |
| information than what the standard ThreadMXBean does.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <section class="method-summary" id="method.summary"> |
| <h2>Method Summary</h2> |
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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><a href="ExtendedThreadInfo.html" title="interface in com.ibm.lang.management">ExtendedThreadInfo</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="#dumpAllExtendedThreads(boolean,boolean)">dumpAllExtendedThreads</a></span>​(boolean lockedMonitors, |
| boolean lockedSynchronizers)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">API method that fetches an array of ExtendedThreadInfo objects corresponding to |
| threads in the virtual machine during the time it is invoked.</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="#getNativeThreadId(long)">getNativeThreadId</a></span>​(long threadId)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Find the native (operating system assigned) thread identifiers corresponding |
| to a unique TID (as returned by java/lang/Thread.getId()).</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="#getNativeThreadIds(long%5B%5D)">getNativeThreadIds</a></span>​(long[] threadIDs)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Fetches an array of the native (operating system assigned) identifiers |
| corresponding to unique TIDs (as returned by java/lang/Thread.getId()) specified to it.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods.inherited.from.class.java.lang.management.PlatformManagedObject">Methods declared in interface java.lang.management.<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/PlatformManagedObject.html" title="class or interface in java.lang.management" class="external-link" target="_blank">PlatformManagedObject</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/PlatformManagedObject.html#getObjectName()" title="class or interface in java.lang.management" class="external-link" target="_blank">getObjectName</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods.inherited.from.class.java.lang.management.ThreadMXBean">Methods declared in interface java.lang.management.<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html" title="class or interface in java.lang.management" class="external-link" target="_blank">ThreadMXBean</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#dumpAllThreads(boolean,boolean)" title="class or interface in java.lang.management" class="external-link" target="_blank">dumpAllThreads</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#dumpAllThreads(boolean,boolean,int)" title="class or interface in java.lang.management" class="external-link" target="_blank">dumpAllThreads</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#findDeadlockedThreads()" title="class or interface in java.lang.management" class="external-link" target="_blank">findDeadlockedThreads</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#findMonitorDeadlockedThreads()" title="class or interface in java.lang.management" class="external-link" target="_blank">findMonitorDeadlockedThreads</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getAllThreadIds()" title="class or interface in java.lang.management" class="external-link" target="_blank">getAllThreadIds</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getCurrentThreadCpuTime()" title="class or interface in java.lang.management" class="external-link" target="_blank">getCurrentThreadCpuTime</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getCurrentThreadUserTime()" title="class or interface in java.lang.management" class="external-link" target="_blank">getCurrentThreadUserTime</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getDaemonThreadCount()" title="class or interface in java.lang.management" class="external-link" target="_blank">getDaemonThreadCount</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getPeakThreadCount()" title="class or interface in java.lang.management" class="external-link" target="_blank">getPeakThreadCount</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadCount()" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadCount</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadCpuTime(long)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadCpuTime</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadInfo(long)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadInfo</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadInfo(long%5B%5D)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadInfo</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadInfo(long%5B%5D,boolean,boolean)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadInfo</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadInfo(long%5B%5D,boolean,boolean,int)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadInfo</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadInfo(long%5B%5D,int)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadInfo</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadInfo(long,int)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadInfo</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getThreadUserTime(long)" title="class or interface in java.lang.management" class="external-link" target="_blank">getThreadUserTime</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#getTotalStartedThreadCount()" title="class or interface in java.lang.management" class="external-link" target="_blank">getTotalStartedThreadCount</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#isCurrentThreadCpuTimeSupported()" title="class or interface in java.lang.management" class="external-link" target="_blank">isCurrentThreadCpuTimeSupported</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#isObjectMonitorUsageSupported()" title="class or interface in java.lang.management" class="external-link" target="_blank">isObjectMonitorUsageSupported</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#isSynchronizerUsageSupported()" title="class or interface in java.lang.management" class="external-link" target="_blank">isSynchronizerUsageSupported</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#isThreadContentionMonitoringEnabled()" title="class or interface in java.lang.management" class="external-link" target="_blank">isThreadContentionMonitoringEnabled</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#isThreadContentionMonitoringSupported()" title="class or interface in java.lang.management" class="external-link" target="_blank">isThreadContentionMonitoringSupported</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#isThreadCpuTimeEnabled()" title="class or interface in java.lang.management" class="external-link" target="_blank">isThreadCpuTimeEnabled</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#isThreadCpuTimeSupported()" title="class or interface in java.lang.management" class="external-link" target="_blank">isThreadCpuTimeSupported</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#resetPeakThreadCount()" title="class or interface in java.lang.management" class="external-link" target="_blank">resetPeakThreadCount</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#setThreadContentionMonitoringEnabled(boolean)" title="class or interface in java.lang.management" class="external-link" target="_blank">setThreadContentionMonitoringEnabled</a>, <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.management/java/lang/management/ThreadMXBean.html#setThreadCpuTimeEnabled(boolean)" title="class or interface in java.lang.management" class="external-link" target="_blank">setThreadCpuTimeEnabled</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="getNativeThreadIds(long[])"> |
| <h3>getNativeThreadIds</h3> |
| <div class="member-signature"><span class="return-type">long[]</span> <span class="element-name">getNativeThreadIds</span>​<span class="parameters">(long[] threadIDs)</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="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/SecurityException.html" title="class or interface in java.lang" class="external-link" target="_blank">SecurityException</a></span></div> |
| <div class="block">Fetches an array of the native (operating system assigned) identifiers |
| corresponding to unique TIDs (as returned by java/lang/Thread.getId()) specified to it.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>threadIDs</code> - An array of thread identifiers that the user wishes to obtain |
| native thread identifiers for.</dd> |
| <dt>Returns:</dt> |
| <dd>An array of operating system assigned native thread identifiers. If a thread among the |
| given set of IDs is no longer alive or does not exist, a -1 is set in the corresponding |
| element of the returned array.</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> - is thrown if any of the thread identifiers passed is invalid (<=0).</dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/SecurityException.html" title="class or interface in java.lang" class="external-link" target="_blank">SecurityException</a></code> - is thrown if the caller does not have sufficient permissions |
| (ManagementPermission("monitor"))</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getNativeThreadId(long)"> |
| <h3>getNativeThreadId</h3> |
| <div class="member-signature"><span class="return-type">long</span> <span class="element-name">getNativeThreadId</span>​<span class="parameters">(long threadId)</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="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/SecurityException.html" title="class or interface in java.lang" class="external-link" target="_blank">SecurityException</a></span></div> |
| <div class="block">Find the native (operating system assigned) thread identifiers corresponding |
| to a unique TID (as returned by java/lang/Thread.getId()). When querying multiple threadIDs, |
| consider using getNativeThreadIds(long[]) as it is more efficient than getNativeThreadId().</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>threadId</code> - The Java runtime allocated thread identifier.</dd> |
| <dt>Returns:</dt> |
| <dd>Operating system assigned native thread identifier. If the thread corresponding to the |
| ID is no longer alive or does not exist, -1 is returned.</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> - is thrown if the thread identifier passed is invalid (<=0).</dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/SecurityException.html" title="class or interface in java.lang" class="external-link" target="_blank">SecurityException</a></code> - is thrown if the caller does not have sufficient permissions |
| (ManagementPermission("monitor"))</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="dumpAllExtendedThreads(boolean,boolean)"> |
| <h3>dumpAllExtendedThreads</h3> |
| <div class="member-signature"><span class="return-type"><a href="ExtendedThreadInfo.html" title="interface in com.ibm.lang.management">ExtendedThreadInfo</a>[]</span> <span class="element-name">dumpAllExtendedThreads</span>​<span class="parameters">(boolean lockedMonitors, |
| boolean lockedSynchronizers)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/SecurityException.html" title="class or interface in java.lang" class="external-link" target="_blank">SecurityException</a>, |
| <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang" class="external-link" target="_blank">UnsupportedOperationException</a>, |
| <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/InternalError.html" title="class or interface in java.lang" class="external-link" target="_blank">InternalError</a></span></div> |
| <div class="block">API method that fetches an array of ExtendedThreadInfo objects corresponding to |
| threads in the virtual machine during the time it is invoked. |
| Fetches an array of ExtendedThreadInfo objects that provide native thread |
| identifiers along with java.lang.management.ThreadInfo object representing the thread. |
| Consider using dumpAllExtendedThreads() in place of dumpAllThreads() as it provides |
| additional thread identification information in an efficient manner.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>lockedMonitors</code> - boolean indication of whether or not information on all |
| currently locked object monitors is to be included in the |
| returned array</dd> |
| <dd><code>lockedSynchronizers</code> - boolean indication of whether or not information on all |
| currently locked ownable synchronizers is to be included in |
| the returned array</dd> |
| <dt>Returns:</dt> |
| <dd>Array of ExtendedThreadInfo objects.</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/SecurityException.html" title="class or interface in java.lang" class="external-link" target="_blank">SecurityException</a></code> - is thrown if the caller does not have sufficient permissions |
| (ManagementPermission("monitor"))</dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/UnsupportedOperationException.html" title="class or interface in java.lang" class="external-link" target="_blank">UnsupportedOperationException</a></code> - is thrown if the JVM does not support monitoring |
| object monitor usage or ownable synchronizer usage, even as it has been specified.</dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/InternalError.html" title="class or interface in java.lang" class="external-link" target="_blank">InternalError</a></code> - is thrown in case an error occurs while fetching thread information, |
| typically, an internal error resulting from an inconsistency in the class library.</dd> |
| </dl> |
| </section> |
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