@Exported public interface ThreadMXBean extends ThreadMXBean
This platform extension is only available to a thread implementation that supports this extension.
| Modifier and Type | Method and Description | 
|---|---|
| long | getThreadAllocatedBytes(long id)Returns an approximation of the total amount of memory, in bytes,
 allocated in heap memory for the thread of the specified ID. | 
| long[] | getThreadAllocatedBytes(long[] ids)Returns an approximation of the total amount of memory, in bytes,
 allocated in heap memory for each thread whose ID is in the input
 array  ids. | 
| long[] | getThreadCpuTime(long[] ids)Returns the total CPU time for each thread whose ID is
 in the input array  idsin nanoseconds. | 
| long[] | getThreadUserTime(long[] ids)Returns the CPU time that each thread whose ID is in the input array
  idshas executed in user mode in nanoseconds. | 
| boolean | isThreadAllocatedMemoryEnabled()Tests if thread memory allocation measurement is enabled. | 
| boolean | isThreadAllocatedMemorySupported()Tests if the Java virtual machine implementation supports thread memory
 allocation measurement. | 
| void | setThreadAllocatedMemoryEnabled(boolean enable)Enables or disables thread memory allocation measurement. | 
dumpAllThreads, findDeadlockedThreads, findMonitorDeadlockedThreads, getAllThreadIds, getCurrentThreadCpuTime, getCurrentThreadUserTime, getDaemonThreadCount, getPeakThreadCount, getThreadCount, getThreadCpuTime, getThreadInfo, getThreadInfo, getThreadInfo, getThreadInfo, getThreadInfo, getThreadUserTime, getTotalStartedThreadCount, isCurrentThreadCpuTimeSupported, isObjectMonitorUsageSupported, isSynchronizerUsageSupported, isThreadContentionMonitoringEnabled, isThreadContentionMonitoringSupported, isThreadCpuTimeEnabled, isThreadCpuTimeSupported, resetPeakThreadCount, setThreadContentionMonitoringEnabled, setThreadCpuTimeEnabledgetObjectNamelong[] getThreadCpuTime(long[] ids)
ids in nanoseconds.
 The returned values are of nanoseconds precision but
 not necessarily nanoseconds accuracy.
 
 This method is equivalent to calling the
 ThreadMXBean.getThreadCpuTime(long)
 method for each thread ID in the input array ids and setting the
 returned value in the corresponding element of the returned array.
ids - an array of thread IDs.-1 otherwise.NullPointerException - if ids is nullIllegalArgumentException - if any element in the input array
         ids is <= 0.UnsupportedOperationException - if the Java
         virtual machine implementation does not support CPU time
         measurement.ThreadMXBean.getThreadCpuTime(long), 
getThreadUserTime(long[]), 
ThreadMXBean.isThreadCpuTimeSupported(), 
ThreadMXBean.isThreadCpuTimeEnabled(), 
ThreadMXBean.setThreadCpuTimeEnabled(boolean)long[] getThreadUserTime(long[] ids)
ids has executed in user mode in nanoseconds.
 The returned values are of nanoseconds precision but
 not necessarily nanoseconds accuracy.
 
 This method is equivalent to calling the
 ThreadMXBean.getThreadUserTime(long)
 method for each thread ID in the input array ids and setting the
 returned value in the corresponding element of the returned array.
ids - an array of thread IDs.-1 otherwise.NullPointerException - if ids is nullIllegalArgumentException - if any element in the input array
         ids is <= 0.UnsupportedOperationException - if the Java
         virtual machine implementation does not support CPU time
         measurement.ThreadMXBean.getThreadUserTime(long), 
getThreadCpuTime(long[]), 
ThreadMXBean.isThreadCpuTimeSupported(), 
ThreadMXBean.isThreadCpuTimeEnabled(), 
ThreadMXBean.setThreadCpuTimeEnabled(boolean)long getThreadAllocatedBytes(long id)
 If the thread of the specified ID is not alive or does not exist,
 this method returns -1. If thread memory allocation measurement
 is disabled, this method returns -1.
 A thread is alive if it has been started and has not yet died.
 
If thread memory allocation measurement is enabled after the thread has started, the Java virtual machine implementation may choose any time up to and including the time that the capability is enabled as the point where thread memory allocation measurement starts.
id - the thread ID of a thread-1 otherwise.IllegalArgumentException - if id <= 0.UnsupportedOperationException - if the Java virtual
         machine implementation does not support thread memory allocation
         measurement.isThreadAllocatedMemorySupported(), 
isThreadAllocatedMemoryEnabled(), 
setThreadAllocatedMemoryEnabled(boolean)long[] getThreadAllocatedBytes(long[] ids)
ids.
 The returned values are approximations because some Java virtual machine
 implementations may use object allocation mechanisms that result in a
 delay between the time an object is allocated and the time its size is
 recorded.
 
 This method is equivalent to calling the
 getThreadAllocatedBytes(long)
 method for each thread ID in the input array ids and setting the
 returned value in the corresponding element of the returned array.
ids - an array of thread IDs.NullPointerException - if ids is nullIllegalArgumentException - if any element in the input array
         ids is <= 0.UnsupportedOperationException - if the Java virtual
         machine implementation does not support thread memory allocation
         measurement.getThreadAllocatedBytes(long), 
isThreadAllocatedMemorySupported(), 
isThreadAllocatedMemoryEnabled(), 
setThreadAllocatedMemoryEnabled(boolean)boolean isThreadAllocatedMemorySupported()
true
     if the Java virtual machine implementation supports thread memory
     allocation measurement;
   false otherwise.boolean isThreadAllocatedMemoryEnabled()
true if thread memory allocation measurement is enabled;
         false otherwise.UnsupportedOperationException - if the Java virtual
         machine does not support thread memory allocation measurement.isThreadAllocatedMemorySupported()void setThreadAllocatedMemoryEnabled(boolean enable)
enable - true to enable;
               false to disable.UnsupportedOperationException - if the Java virtual
         machine does not support thread memory allocation measurement.SecurityException - if a security manager
         exists and the caller does not have
         ManagementPermission("control").isThreadAllocatedMemorySupported()
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