java.lang.management
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.
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
MonitorInfo
public 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.
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.
from
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.
- a new instance containing the values from the
composite data structure, or
null
if the data structure was also null.
getLockedStackDepth
public int getLockedStackDepth()
Returns the depth of the stack at which the lock was obtained.
This works as an index into the array returned by
ThreadInfo.getStackTrace().
- the depth of the stack at which the lock was obtained,
or a negative number if this information is unavailable.
getLockedStackFrame
public StackTraceElement getLockedStackFrame()
Returns the stack frame at which the lock was obtained.
- the stack frame at which the lock was obtained,
or
null if this informati0on is unavailable.
MonitorInfo.java - Information on a monitor lock.
Copyright (C) 2006 Free Software Foundation
This file is part of GNU Classpath.
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