File	Doc	Category	Size	Date	Package
MonitorInfo.java	API Doc	Java SE 6 API	5173	Tue Jun 10 00:25:38 BST 2008	java.lang.management

MonitorInfo

• java.lang.Object
  • java.lang.management.LockInfo

Fields Summary
private int	stackDepth
private StackTraceElement	stackFrame

Constructors Summary

public MonitorInfo(String className, int identityHashCode, int stackDepth, StackTraceElement stackFrame) Construct a MonitorInfo object. param className the fully qualified name of the class of the lock object. param identityHashCode the {@link System#identityHashCode identity hash code} of the lock object. param stackDepth the depth in the stack trace where the object monitor was locked. param 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. super(className, identityHashCode); if (stackDepth >= 0 && stackFrame == null) { throw new IllegalArgumentException("Parameter stackDepth is " + stackDepth + " but stackFrame is null"); } if (stackDepth < 0 && stackFrame != null) { throw new IllegalArgumentException("Parameter stackDepth is " + stackDepth + " but stackFrame is not null"); } this.stackDepth = stackDepth; this.stackFrame = stackFrame;

Methods Summary
public static java.lang.management.MonitorInfo	from(javax.management.openmbean.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 the {@link LockInfo} class: Attribute Name Type lockedStackFrame CompositeData as specified in the stackTrace attribute defined in the {@link ThreadInfo#from ThreadInfo.from} method. lockedStackDepth java.lang.Integer param cd CompositeData representing a MonitorInfo throws IllegalArgumentException if cd does not represent a MonitorInfo with the attributes described above. return a MonitorInfo object represented by cd if cd is not null; null otherwise. if (cd == null) { return null; } if (cd instanceof MonitorInfoCompositeData) { return ((MonitorInfoCompositeData) cd).getMonitorInfo(); } else { MonitorInfoCompositeData.validateCompositeData(cd); String className = MonitorInfoCompositeData.getClassName(cd); int identityHashCode = MonitorInfoCompositeData.getIdentityHashCode(cd); int stackDepth = MonitorInfoCompositeData.getLockedStackDepth(cd); StackTraceElement stackFrame = MonitorInfoCompositeData.getLockedStackFrame(cd); return new MonitorInfo(className, identityHashCode, stackDepth, stackFrame); }
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 the {@link ThreadInfo#getStackTrace} method. return the depth in the stack trace where the object monitor was locked, or a negative number if not available. return stackDepth;
public java.lang.StackTraceElement	getLockedStackFrame() Returns the stack frame that locked the object monitor. return StackTraceElement that locked the object monitor, or null if not available. return stackFrame;