public class GcInfo extends Object implements CompositeData, CompositeDataView
- Start time
- End time
- Duration
- Memory usage before the collection starts
- Memory usage after the collection ends
Modifier and Type | Method and Description |
---|---|
boolean |
containsKey(String key) |
boolean |
containsValue(Object value) |
boolean |
equals(Object obj)
Compares the argument to the receiver, and answers true
if they represent the same object using a class
specific comparison.
|
static GcInfo |
from(CompositeData cd)
Returns a
GcInfo object represented by the
given CompositeData . |
Object |
get(String key) |
Object[] |
getAll(String[] keys) |
CompositeType |
getCompositeType() |
long |
getDuration()
Returns the elapsed time of this GC in milliseconds.
|
long |
getEndTime()
Returns the end time of this GC in milliseconds
since the Java virtual machine was started.
|
long |
getId() |
Map<String,MemoryUsage> |
getMemoryUsageAfterGc()
Returns the memory usage of all memory pools
at the end of this GC.
|
Map<String,MemoryUsage> |
getMemoryUsageBeforeGc()
Returns the memory usage of all memory pools
at the beginning of this GC.
|
long |
getStartTime()
Returns the start time of this GC in milliseconds
since the Java virtual machine was started.
|
int |
hashCode()
Answers an integer hash code for the receiver.
|
CompositeData |
toCompositeData(CompositeType ct)
Return the
CompositeData representation of this
GcInfo , including any GC-specific attributes. |
String |
toString()
Answers a string containing a concise, human-readable
description of the receiver.
|
Collection<?> |
values() |
public long getId()
public long getStartTime()
public long getEndTime()
public long getDuration()
public Map<String,MemoryUsage> getMemoryUsageBeforeGc()
Map
of the name of a memory pool
to the memory usage of the corresponding
memory pool before GC starts.Map
of memory pool names to the memory
usage of a memory pool before GC starts.public Map<String,MemoryUsage> getMemoryUsageAfterGc()
Map
of the name of a memory pool
to the memory usage of the corresponding
memory pool when GC finishes.Map
of memory pool names to the memory
usage of a memory pool when GC finishes.public static GcInfo from(CompositeData cd)
GcInfo
object represented by the
given CompositeData
. The given
CompositeData
must contain
all the following attributes:
CompositeData attributes Attribute Name Type index java.lang.Long
startTime java.lang.Long
endTime java.lang.Long
memoryUsageBeforeGc javax.management.openmbean.TabularData
memoryUsageAfterGc javax.management.openmbean.TabularData
cd
- CompositeData
representing a GcInfo
GcInfo
object represented by cd
if cd
is not null
; null
otherwise.IllegalArgumentException
- if cd
does not
represent a GcInfo
object with the attributes
described above.public boolean containsKey(String key)
containsKey
in interface CompositeData
public boolean containsValue(Object value)
containsValue
in interface CompositeData
public boolean equals(Object obj)
equals
in interface CompositeData
equals
in class Object
obj
- Object
the object to compare with this object.true
if the object is the same as this object
false
if it is different from this object.Object.hashCode()
public Object get(String key)
get
in interface CompositeData
public Object[] getAll(String[] keys)
getAll
in interface CompositeData
public CompositeType getCompositeType()
getCompositeType
in interface CompositeData
public int hashCode()
true
when passed to
.equals
must answer the same value for this
method.hashCode
in interface CompositeData
hashCode
in class Object
Object.equals(java.lang.Object)
public String toString()
toString
in interface CompositeData
toString
in class Object
public Collection<?> values()
values
in interface CompositeData
public CompositeData toCompositeData(CompositeType ct)
Return the CompositeData
representation of this
GcInfo
, including any GC-specific attributes. The
returned value will have at least all the attributes described
in the from
method, plus optionally
other attributes.
toCompositeData
in interface CompositeDataView
ct
- the CompositeType
that the caller expects.
This parameter is ignored and can be null.CompositeData
representation.Eclipse OpenJ9 website.
To raise a bug report or suggest an improvement create an Eclipse OpenJ9 issue.
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