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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.
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