Examples with JavaThread com.ibm.dtfj.java.JavaThread used on opensource projects

Example 21 with JavaThread

use of com.ibm.dtfj.java.JavaThread in project openj9 by eclipse.

the class InfoLockCommand method showSystemLocks.

private void showSystemLocks() {
    Vector vMonitorsWithLockedObjects = new Vector();
    JavaRuntime jRuntime = ctx.getRuntime();
    Iterator monitors = jRuntime.getMonitors();
    out.println("\nSystem locks...");
    while (monitors.hasNext()) {
        JavaMonitor jMonitor = (JavaMonitor) monitors.next();
        JavaObject jObject = jMonitor.getObject();
        try {
            String monitorName = jMonitor.getName().trim();
            if (monitorName.equalsIgnoreCase("")) {
                monitorName = "<un-named monitor>";
            }
            out.println("id: 0x" + jMonitor.getID() + " name: " + jMonitor.getName());
            JavaThread owner = jMonitor.getOwner();
            if (null != owner) {
                try {
                    out.println("\towner thread id: " + owner.getImageThread().getID() + " name: " + owner.getName());
                } catch (DataUnavailable e) {
                    out.println("\towner thread id: " + Exceptions.getDataUnavailableString());
                    logger.log(Level.FINE, Exceptions.getDataUnavailableString(), e);
                }
            }
            showWaiters(jMonitor);
        } catch (CorruptDataException cde) {
            out.println("\nwarning, corrupt data encountered during scan for system locks...");
        }
        if (null != jObject) {
            // Remember object monitors (flat or inflated) for later
            vMonitorsWithLockedObjects.add(jMonitor);
        }
    }
    showLockedObjects(vMonitorsWithLockedObjects);
}

Example 22 with JavaThread

use of com.ibm.dtfj.java.JavaThread in project openj9 by eclipse.

the class InfoLockCommand method showLockedObjects.

private void showLockedObjects(Vector vMonitorsWithLockedObjects) {
    out.println("\nObject Locks in use...");
    if (0 == vMonitorsWithLockedObjects.size()) {
        out.println("\t...None.");
        return;
    }
    Iterator lockedObjects = vMonitorsWithLockedObjects.iterator();
    while (lockedObjects.hasNext()) {
        JavaMonitor jMonitor = (JavaMonitor) lockedObjects.next();
        JavaObject jObject = jMonitor.getObject();
        try {
            JavaThread owner = jMonitor.getOwner();
            String className = "<unknown class>";
            JavaClass jClass = jObject.getJavaClass();
            if (null != jClass) {
                className = jClass.getName();
            }
            String jObjectID = Long.toHexString(jObject.getID().getAddress());
            if (null == owner) {
                out.println(className + "@0x" + jObjectID);
            } else {
                String owningThreadID = null;
                try {
                    owningThreadID = owner.getImageThread().getID();
                } catch (DataUnavailable e) {
                    owningThreadID = Exceptions.getDataUnavailableString();
                }
                out.println(className + "@0x" + jObjectID);
                out.println("\towner thread id: " + owningThreadID + " name: " + owner.getName());
            }
            showWaiters(jMonitor);
        } catch (CorruptDataException cde) {
            logger.log(Level.FINE, Exceptions.getCorruptDataExceptionString(), cde);
        }
    }
}