|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectjava.lang.management.LockInfo
java.lang.management.MonitorInfo
public class MonitorInfo
Provides information on a monitor lock held by a thread. A monitor lock is obtained when a thread enters a synchronized block or method.
Constructor Summary | |
---|---|
MonitorInfo(String className,
int identityHashCode,
int stackDepth,
StackTraceElement stackFrame)
Constructs a new MonitorInfo using the specified
lock class name and identity hash code, and the given
stack depth and frame. |
Method Summary | |
---|---|
static MonitorInfo |
from(CompositeData data)
Returns a MonitorInfo instance using the values
given in the supplied
CompositeData object. |
int |
getLockedStackDepth()
Returns the depth of the stack at which the lock was obtained. |
StackTraceElement |
getLockedStackFrame()
Returns the stack frame at which the lock was obtained. |
Methods inherited from class java.lang.management.LockInfo |
---|
getClassName, getIdentityHashCode, toString |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
---|
public MonitorInfo(String className, int identityHashCode, int stackDepth, StackTraceElement stackFrame)
MonitorInfo
using the specified
lock class name and identity hash code, and the given
stack depth and frame.
className
- the class name of the lock object.identityHashCode
- the identity hash code of the lock object.stackDepth
- the depth of the stack at which the lock
was obtained.stackFrame
- the frame of the stack at which the lock was
obtained.
IllegalArgumentException
- if the stack depth and frame are
inconsistent i.e. the frame is
null
but the depth is
≥ 0, or the frame is not
null
but the depth is
< 0.Method Detail |
---|
public static MonitorInfo from(CompositeData data)
Returns a MonitorInfo
instance using the values
given in the supplied
CompositeData
object.
The composite data instance should contain the following
attributes with the specified types:
Name | Type |
className | java.lang.String |
identityHashCode | java.lang.Integer |
lockedStackDepth | java.lang.Integer |
lockedStackFrame | javax.management.openmbean.CompositeData |
The stack trace is further described as:
Name | Type |
className | java.lang.String |
methodName | java.lang.String |
fileName | java.lang.String |
lineNumber | java.lang.Integer |
nativeMethod | java.lang.Boolean |
data
- the composite data structure to take values from.
null
if the data structure was also null
.
IllegalArgumentException
- if the composite data structure
does not match the structure
outlined above.public int getLockedStackDepth()
ThreadInfo.getStackTrace()
.
public StackTraceElement getLockedStackFrame()
null
if this informati0on is unavailable.
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |