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package com.sun.jdi;

Information about a monitor owned by a thread.
Author:
Swamy Venkataramanappa
Since:
 1.6/**
 * Information about a monitor owned by a thread.
 *
 * @author Swamy Venkataramanappa
 * @since  1.6
 */

@jdk.Exported
public interface MonitorInfo extends Mirror {

    
Returns the ObjectReference object for the monitor. 
Throws:
InvalidStackFrameException – if the associated stack
frame has become invalid. Once the frame's thread is resumed,
the stack frame is no longer valid.
See Also:
ThreadReference.ownedMonitorsAndFrames
Returns:
the ObjectReference object for the monitor.
Since:
1.6/**
     * Returns the {@link ObjectReference} object for the monitor.
     * @return the {@link ObjectReference} object for the monitor.
     * @throws InvalidStackFrameException if the associated stack
     * frame has become invalid. Once the frame's thread is resumed,
     * the stack frame is no longer valid.
     * @see ThreadReference#ownedMonitorsAndFrames
     * @since 1.6
     */
    public ObjectReference monitor();

    
Returns the stack depth at which this monitor was
acquired by the owning thread. Returns -1 if the
implementation cannot determine the stack depth
(e.g., for monitors acquired by JNI MonitorEnter).
Throws:
InvalidStackFrameException – if the associated stack
frame has become invalid. Once the frame's thread is resumed,
the stack frame is no longer valid.
See Also:
ThreadReference.ownedMonitorsAndFrames
Returns:
the stack depth at which this monitor was
acquired by the owning thread./**
     * Returns the stack depth at which this monitor was
     * acquired by the owning thread. Returns -1 if the
     * implementation cannot determine the stack depth
     * (e.g., for monitors acquired by JNI MonitorEnter).
     * @return the stack depth at which this monitor was
     * acquired by the owning thread.
     * @throws InvalidStackFrameException if the associated stack
     * frame has become invalid. Once the frame's thread is resumed,
     * the stack frame is no longer valid.
     * @see ThreadReference#ownedMonitorsAndFrames
     */
    public int stackDepth();

    
Returns a ThreadReference object for the thread that owns the monitor. 
Throws:
InvalidStackFrameException – if the associated stack
frame has become invalid. Once the frame's thread is resumed,
the stack frame is no longer valid.
See Also:
ThreadReference.frame
Returns:
a ThreadReference object for the thread that owns the monitor./**
     * Returns a {@link ThreadReference} object for the thread that
     * owns the monitor.
     * @return a {@link ThreadReference} object for the thread that
     * owns the monitor.
     * @throws InvalidStackFrameException if the associated stack
     * frame has become invalid. Once the frame's thread is resumed,
     * the stack frame is no longer valid.
     * @see ThreadReference#frame
     */
    ThreadReference thread();
}