Class ExtendedRuntimeMXBeanImpl
java.lang.Object
com.ibm.java.lang.management.internal.RuntimeMXBeanImpl
com.ibm.lang.management.internal.ExtendedRuntimeMXBeanImpl
- All Implemented Interfaces:
RuntimeMXBean
,PlatformManagedObject
,RuntimeMXBean
public final class ExtendedRuntimeMXBeanImpl
extends com.ibm.java.lang.management.internal.RuntimeMXBeanImpl
implements RuntimeMXBean
Runtime type for
RuntimeMXBean
.- Since:
- 1.5
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Nested Class Summary
Nested classes/interfaces declared in interface com.ibm.lang.management.RuntimeMXBean
RuntimeMXBean.VMIdleStates
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Method Summary
Modifier and TypeMethodDescriptiondouble
Returns a double value which holds the system load average calculated for the minute preceding the call, where system load average is taken to mean the following:static RuntimeMXBean
Singleton accessor method.double
Returns a system load average calculated over the minute preceding the call averaged over the number of CPU available to Java virtual machine process.getVmId()
This is provided for the benefit of applications which use attach API to load JVMTI agents into their own JVMs.Returns current JVM Idle state.boolean
Query the state of the Attach API.boolean
Query the state of the Attach API.boolean
isVMIdle()
Methods declared in class com.ibm.java.lang.management.internal.RuntimeMXBeanImpl
checkMonitorPermission, getBootClassPath, getClassPath, getInputArguments, getLibraryPath, getManagementSpecVersion, getName, getObjectName, getSpecName, getSpecVendor, getSpecVersion, getStartTime, getSystemProperties, getUptime, getVmName, getVmVendor, getVmVersion, isBootClassPathSupported
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods declared in interface java.lang.management.PlatformManagedObject
getObjectName
Methods declared in interface java.lang.management.RuntimeMXBean
getBootClassPath, getClassPath, getInputArguments, getLibraryPath, getManagementSpecVersion, getName, getPid, getSpecName, getSpecVendor, getSpecVersion, getStartTime, getSystemProperties, getUptime, getVmName, getVmVendor, getVmVersion, isBootClassPathSupported
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Method Details
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getInstance
Singleton accessor method.- Returns:
- the
RuntimeMXBeanImpl
singleton.
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getCPULoad
public double getCPULoad()Returns a double value which holds the system load average calculated for the minute preceding the call, where system load average is taken to mean the following:The time-averaged value of the sum of the number of runnable entities running on the available processors and the number of runnable entities ready and queued to run on the available processors. The averaging technique adopted can vary depending on the underlying operating system.
- Specified by:
getCPULoad
in interfaceRuntimeMXBean
- Returns:
- normally, the system load average as a double. If the system load average is not obtainable (e.g. because the calculation may involve an unacceptable performance impact) then a negative value is returned.
- See Also:
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getVMGeneratedCPULoad
public double getVMGeneratedCPULoad()Returns a system load average calculated over the minute preceding the call averaged over the number of CPU available to Java virtual machine process.- Specified by:
getVMGeneratedCPULoad
in interfaceRuntimeMXBean
- Returns:
- A double indicating the average system load per processor. If the system load average is not available, it returns a negative value to indicate this.
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getVMIdleState
Returns current JVM Idle state.- Specified by:
getVMIdleState
in interfaceRuntimeMXBean
- Returns:
- JVM idle state value - i.e active / idle
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isVMIdle
public boolean isVMIdle()- Specified by:
isVMIdle
in interfaceRuntimeMXBean
- Returns:
- true if JVM state is idle. Otherwise returns false
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isAttachApiInitialized
public boolean isAttachApiInitialized()Description copied from interface:RuntimeMXBean
Query the state of the Attach API. Return false if the Attach API is: - still initializing - disabled - terminated by VM shutdown- Specified by:
isAttachApiInitialized
in interfaceRuntimeMXBean
- Returns:
- true if Attach API is initialized
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isAttachApiTerminated
public boolean isAttachApiTerminated()Description copied from interface:RuntimeMXBean
Query the state of the Attach API. Return true if the Attach API is: - disabled - terminated by VM shutdown and false if it is - still initializing - initialized and running- Specified by:
isAttachApiTerminated
in interfaceRuntimeMXBean
- Returns:
- true if Attach API is terminated
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getVmId
Description copied from interface:RuntimeMXBean
This is provided for the benefit of applications which use attach API to load JVMTI agents into their own JVMs.- Specified by:
getVmId
in interfaceRuntimeMXBean
- Returns:
- Attach API Virtual Machine ID of this VM
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