jdk.lang.management.GarbageCollectorMXBean
The management interface for the garbage collection of the Java virtual machine. Garbage collection is the process that the Java virtual machine uses to find and reclaim unreachable objects to free up memory space. A garbage collector is one type of memory manager.
A Java virtual machine may have one or more instances of the implementation class of this interface. An instance implementing this interface is an MXBean that can be obtained by calling the ManagementFactory.getGarbageCollectorMXBeans() method or from the platform MBeanServer method.
The ObjectName for uniquely identifying the MXBean for a garbage collector within an MBeanServer is:
java.lang:type=GarbageCollector,name=collector's name
It can be obtained by calling the PlatformManagedObject.getObjectName() method.
A platform usually includes additional platform-dependent information specific to a garbage collection algorithm for monitoring.
The management interface for the garbage collection of the Java virtual machine. Garbage collection is the process that the Java virtual machine uses to find and reclaim unreachable objects to free up memory space. A garbage collector is one type of memory manager. A Java virtual machine may have one or more instances of the implementation class of this interface. An instance implementing this interface is an MXBean that can be obtained by calling the ManagementFactory.getGarbageCollectorMXBeans() method or from the platform MBeanServer method. The ObjectName for uniquely identifying the MXBean for a garbage collector within an MBeanServer is: java.lang:type=GarbageCollector,name=collector's name It can be obtained by calling the PlatformManagedObject.getObjectName() method. A platform usually includes additional platform-dependent information specific to a garbage collection algorithm for monitoring.
get-collection-countclj
(get-collection-count this)Returns the total number of collections that have occurred. This method returns -1 if the collection count is undefined for this collector.
returns: the total number of collections that have occurred. - long
Returns the total number of collections that have occurred. This method returns -1 if the collection count is undefined for this collector. returns: the total number of collections that have occurred. - `long`
get-collection-timeclj
(get-collection-time this)Returns the approximate accumulated collection elapsed time in milliseconds. This method returns -1 if the collection elapsed time is undefined for this collector.
The Java virtual machine implementation may use a high resolution timer to measure the elapsed time. This method may return the same value even if the collection count has been incremented if the collection elapsed time is very short.
returns: the approximate accumulated collection elapsed time
in milliseconds. - long
Returns the approximate accumulated collection elapsed time in milliseconds. This method returns -1 if the collection elapsed time is undefined for this collector. The Java virtual machine implementation may use a high resolution timer to measure the elapsed time. This method may return the same value even if the collection count has been incremented if the collection elapsed time is very short. returns: the approximate accumulated collection elapsed time in milliseconds. - `long`
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