- java.lang.Object
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- java.lang.management.LockInfo
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- java.lang.management.MonitorInfo
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public class MonitorInfo extends LockInfo
Information about an object monitor lock. An object monitor is locked when entering a synchronization block or method on that object.MXBean Mapping
MonitorInfo is mapped to aCompositeDatawith attributes as specified in thefrommethod.- Since:
- 1.6
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Constructor Summary
Constructors Constructor and Description MonitorInfo(String className, int identityHashCode, int stackDepth, StackTraceElement stackFrame)Construct a MonitorInfo object.
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Method Summary
Methods Modifier and Type Method and Description static MonitorInfofrom(CompositeData cd)Returns a MonitorInfo object represented by the given CompositeData.intgetLockedStackDepth()Returns the depth in the stack trace where the object monitor was locked.StackTraceElementgetLockedStackFrame()Returns the stack frame that locked the object monitor.-
Methods inherited from class java.lang.management.LockInfo
getClassName, getIdentityHashCode, toString
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Constructor Detail
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MonitorInfo
public MonitorInfo(String className, int identityHashCode, int stackDepth, StackTraceElement stackFrame)
Construct a MonitorInfo object.- Parameters:
className- the fully qualified name of the class of the lock object.identityHashCode- theidentity hash codeof the lock object.stackDepth- the depth in the stack trace where the object monitor was locked.stackFrame- the stack frame that locked the object monitor.- Throws:
IllegalArgumentException- if stackDepth ≥ 0 but stackFrame is null, or stackDepth < 0 but stackFrame is not null.
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Method Detail
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getLockedStackDepth
public int getLockedStackDepth()
Returns the depth in the stack trace where the object monitor was locked. The depth is the index to the StackTraceElement array returned in theThreadInfo.getStackTrace()method.- Returns:
- the depth in the stack trace where the object monitor was locked, or a negative number if not available.
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getLockedStackFrame
public StackTraceElement getLockedStackFrame()
Returns the stack frame that locked the object monitor.- Returns:
- StackTraceElement that locked the object monitor, or null if not available.
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from
public static MonitorInfo from(CompositeData cd)
Returns a MonitorInfo object represented by the given CompositeData. The given CompositeData must contain the following attributes as well as the attributes specified in the mapped type for theLockInfoclass:Attribute Name Type lockedStackFrame CompositeData as specified in the stackTrace attribute defined in the ThreadInfo.frommethod.lockedStackDepth java.lang.Integer - Parameters:
cd- CompositeData representing a MonitorInfo- Returns:
- a MonitorInfo object represented by cd if cd is not null; null otherwise.
- Throws:
IllegalArgumentException- if cd does not represent a MonitorInfo with the attributes described above.
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Document created the 11/06/2005, last modified the 04/03/2020
Source of the printed document:https://www.gaudry.be/en/java-api-rf-java/lang/management/monitorinfo.html
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