问Apache Tomcat7内存泄漏(怀疑单个对象)

EN

@WebService()
public class ETL_WS {

    private Singleton CAP_offer_coupon_map;

    public ETL_WS() { }

    /**
     * This method adds a single coupon record to the memory map.
     */
    @WebMethod
    synchronized public int singleCouponLoad(@WebParam(name =
            "CouponID") long coupon_id,
            @WebParam(name = "ProductCategoryID") long product_category_id,
            @WebParam(name = "DateTo") Date dateTo,
            @WebParam(name = "LocationID") Location location_id) {
        Coupon _c = new Coupon(coupon_id, product_category_id, dateTo);
        if(location_id != null)
            _c.setLocation(location_id);
        CAP_CouponOfferCollection _data = CAP_offer_coupon_map.getModel();
        Coupon _tmp = _data.getCoupon(coupon_id);
        if(_tmp == null)
            return -1;
        _data.insertCoupon(_c);
        return 0;
    }

    /**
     * This method adds a single offer record to the memory map.
     */
    @WebMethod
    synchronized public int singleOfferLoad(@WebParam(name =
            "OfferID") long offer_id,
            @WebParam(name = "ProductCategoryID") long product_category_id,
            @WebParam(name = "DateTo") Date dateTo,
            @WebParam(name = "LocationID") Location location_id) {
        Offer _o = new Offer(offer_id, product_category_id, dateTo);
        if(location_id != null)
            _o.setLocation(location_id);
        CAP_CouponOfferCollection _data = CAP_offer_coupon_map.getModel();
        Offer _tmp = _data.getOffer(offer_id);
        if(_tmp == null)
            return -1;
        _data.insertOffer(_o);
        return 0;
    }

    @WebMethod
    synchronized public String getAllCoupons() {
        CAP_CouponOfferCollection _data = CAP_offer_coupon_map.getModel();
        HashMap<Long, Coupon> _c = _data.getCoupons_map();
        return _c.toString();
    }

    @WebMethod
    synchronized public String getAllOffers() {
        CAP_CouponOfferCollection _data = CAP_offer_coupon_map.getModel();
        HashMap<Long, Offer> _o = _data.getOffers_map();
        return _o.toString();
    }

    @WebMethod
    synchronized public long getProductIdFromCouponId(@**WebParam(name
            = "CouponID") long coupon_id) {
        long _product_id = -1;
        CAP_CouponOfferCollection _data = CAP_offer_coupon_map.getModel();
        Coupon _c = _data.getCoupon(coupon_id);
        if(_c != null)
            _product_id = _c.getCoupon_id();
        return _product_id;
    }

    @WebMethod
    synchronized public long getProductIdFromOfferId(@WebParam(name = "OfferID") long 
            offer_id) {
        long _product_id = -1;
        CAP_CouponOfferCollection _data = CAP_offer_coupon_map.getModel();
        Offer _o = _data.getOffer(offer_id);
        if(_o != null)
            _product_id = _o.getOffer_id();
        return _product_id;
    }

}

public class Singleton {

    private static boolean _instanceFlag = false;

    private static final Singleton _instance = new Singleton();

    private static CAP_CouponOfferCollection _data;

    private Singleton() {
    _data = new CAP_CouponOfferCollection();
    _instanceFlag = true;
    }

    public static synchronized CAP_CouponOfferCollection getModel() {
    if(_instanceFlag == false) {
        _data = new CAP_CouponOfferCollection();
        _instanceFlag = true;
    }
    return _data;
    }
}

public class CAP_CouponOfferCollection {

    private HashMap<Long, Coupon> _coupons_map;

    private HashMap<Long, ArrayList<Long>> _product_to_coupons_map;

    private HashMap<Long, Offer> _offers_map;

    private HashMap<Long, ArrayList<Long>> _product_cat_to_offers_map;

    private static long _creation_time;

    public CAP_CouponOfferCollection() {
        _creation_time = System.currentTimeMillis();
        System.out.println("Creation of CAP_CouponOffer object: " +
            _creation_time);
    }

    synchronized public void insertCoupon(Coupon newCoupon) {
        if(_coupons_map == null) {
            _coupons_map = new HashMap<Long, Coupon>();
            _product_to_coupons_map =
                    new HashMap<Long, ArrayList<Long>>();
        }
        Long key = newCoupon.getCoupon_id();
        if(!_coupons_map.containsKey(key)) {
            _coupons_map.put(key, newCoupon);
            key = newCoupon.getProductCategory_id();
            if(_product_to_coupons_map.containsKey(key)) {
                ArrayList<Long> _c_list = _product_to_coupons_map.get(key);
                _c_list.add(newCoupon.getCoupon_id());
                _product_to_coupons_map.remove(key);
                _product_to_coupons_map.put(key, _c_list);
            }else {
                ArrayList<Long> _c_list = new ArrayList<Long>();
                _c_list.add(newCoupon.getCoupon_id());
                _product_to_coupons_map.put(key, _c_list);
            }
        }
    }

    synchronized public void insertOffer(Offer newOffer) {
        if(_offers_map == null) {
            _offers_map = new HashMap<Long, Offer>();
            _product_cat_to_offers_map =
                    new HashMap<Long, ArrayList<Long>>();
        }
        Long key = newOffer.getOffer_id();
        if(!_offers_map.containsKey(key)) {
            _offers_map.put(key, newOffer);
            key = newOffer.getProductCategory_id();
            if(_product_cat_to_offers_map.containsKey(key)) {
                ArrayList<Long> _o_list = _product_cat_to_offers_map.get(key);
                _o_list.add(newOffer.getOffer_id());
                _product_cat_to_offers_map.remove(key);
                _product_cat_to_offers_map.put(key, _o_list);
            }else {
                ArrayList<Long> _o_list = new ArrayList<Long>();
                _o_list.add(newOffer.getOffer_id());
                _product_cat_to_offers_map.put(key, _o_list);
            }
        }
    }

    synchronized public void removeCoupon(long couponId) {
        Coupon _c;
        Long key = new Long(couponId);
        if(_coupons_map != null && _coupons_map.containsKey(key)) {
            _c = (Coupon) _coupons_map.get(key);
            _coupons_map.remove(key);
            Long product = new Long(_c.getCoupon_id());
            ArrayList<Long> _c_list =
                    (ArrayList<Long>) _product_to_coupons_map.get(product);
            _c_list.remove(key);
            _product_to_coupons_map.remove(product);
            _product_to_coupons_map.put(product, _c_list);
        }
    }

    synchronized public void removeOffer(long offerId) {
        Offer _o;
        Long key = new Long(offerId);
        if(_offers_map != null && _offers_map.containsKey(key)) {
            _o = (Offer) _offers_map.get(key);
            _offers_map.remove(key);
            Long product = new Long(_o.getOffer_id());
            ArrayList<Long> _o_list =
                    (ArrayList<Long>) _product_cat_to_offers_map.get(product);
            _o_list.remove(key);
            _product_cat_to_offers_map.remove(product);
            _product_cat_to_offers_map.put(product, _o_list);
        }
    }

    synchronized public Coupon getCoupon(long CouponID) {
        Long key = new Long(CouponID);
        if(_coupons_map != null && _coupons_map.containsKey(key)) {
            Coupon _c = (Coupon) _coupons_map.get(key);
            Date _now = new Date();
            if(_now.compareTo(_c.getDateTo()) > 0) {
                this.removeCoupon(CouponID);
                return null;
            }
            return (Coupon) _coupons_map.get(key);
        }else
            return null;
    }

    synchronized public Offer getOffer(long OfferID) {
        Long key = new Long(OfferID);
        if(_offers_map != null && _offers_map.containsKey(key)) {
            Offer _o = (Offer) _offers_map.get(key);
            Date _now = new Date();
            if(_now.compareTo(_o.getDateTo()) > 0) {
                this.removeOffer(OfferID);
                return null;
            }
            return (Offer) _offers_map.get(key);
        }else
            return null;
    }

    synchronized public ArrayList<Long> getCoupons(long ProductID) {
        Long key = new Long(ProductID);
        if(_product_to_coupons_map != null && _product_to_coupons_map.containsKey(key))
        {
            ArrayList<Long> _c_list = 
                    (ArrayList<Long>) _product_to_coupons_map.get(key);
            Iterator itr = _c_list.iterator();
            while(itr.hasNext()) {
                 Long l = (Long) itr.next();
                 if(this.getCoupon(l.longValue()) == null)
                     _c_list.remove(l.intValue());
            }
            _product_to_coupons_map.remove(key);
            _product_to_coupons_map.put(key, _c_list);
            return _c_list;
        }else
            return null;
    }

    synchronized public ArrayList<Long> getOffers(long ProductID) {
        Long key = new Long(ProductID);
        if(_product_cat_to_offers_map != null &&
                _product_cat_to_offers_map.containsKey(key)) {
            ArrayList<Long> _o_list = _product_cat_to_offers_map.get(key);
            Iterator itr = _o_list.iterator();
            while(itr.hasNext()) {
                Long l = (Long) itr.next();
                if(this.getOffer(l.longValue()) == null)
                    _o_list.remove(l.intValue());
            }
            _product_cat_to_offers_map.remove(key);
            _product_cat_to_offers_map.put(key, _o_list);
            return _o_list;
        }else
            return null;
    }

    synchronized public HashMap<Long, Coupon> getCoupons_map() {
        return _coupons_map;
    }

    synchronized public void setCoupons_map(HashMap<Long, Coupon> _coupons_map) {
        this._coupons_map = _coupons_map;
    }

    synchronized public static long getCreation_time() {
        return _creation_time;
    }

    synchronized public void cleanup_offers() {
        if(_product_cat_to_offers_map != null) {
            Set _offers_key_set = _product_cat_to_offers_map.keySet();
            Iterator itr = _offers_key_set.iterator();
            while(itr.hasNext()) {
                Long l = (Long) itr.next();
                this.getOffers(l.longValue());
            }
        }
    }

    synchronized public void cleanup_coupons() {
        if(_product_to_coupons_map != null) {
            Set _coupons_key_set = _product_to_coupons_map.keySet();
            Iterator itr = _coupons_key_set.iterator();
            while(itr.hasNext()) {
                Long l = (Long) itr.next();
                this.getCoupons(l.longValue());
            }
        }
    }
}

SEVERE: The web application [/ETL_Procedures] appears to have started a thread named [maintenance-task-executor-thread-1] but has failed to stop it. This is very likely to create a memory leak.
Oct 03, 2012 5:35:03 PM org.apache.catalina.loader.WebappClassLoadercheckThreadLocalMapForLeaks
SEVERE: The web application [/ETL_Procedures] created a ThreadLocal with key of type [org.glassfish.gmbal.generic.OperationTracer$1] (value [org.glassfish.gmbal.generic.OperationTracer$1@4c24821]) and a value of type [java.util.ArrayList] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Oct 03, 2012 5:35:03 PM org.apache.catalina.loader.WebappClassLoadercheckThreadLocalMapForLeaks
SEVERE: The web application [/ETL_Procedures] created a ThreadLocal with key of type [com.sun.xml.bind.v2.ClassFactory$1] (value [com.sun.xml.bind.v2.ClassFactory$1@6f0d70f7]) and a value of type [java.util.WeakHashMap] (value [{class com.sun.xml.ws.runtime.config.TubeFactoryList=java.lang.ref.WeakReference@5b73a116, class javax.xml.bind.annotation.adapters.CollapsedStringAdapter=java.lang.ref.WeakReference@454da42, class com.sun.xml.ws.runtime.config.MetroConfig=java.lang.ref.WeakReference@5ec52546, class com.sun.xml.ws.runtime.config.TubeFactoryConfig=java.lang.ref.WeakReference@61124745, class java.util.ArrayList=java.lang.ref.WeakReference@770534cc, class com.sun.xml.ws.runtime.config.Tubelines=java.lang.ref.WeakReference@76cd7a1f, class javax.xml.bind.annotation.W3CDomHandler=java.lang.ref.WeakReference@2c0cc628, class com.sun.xml.ws.runtime.config.TubelineDefinition=java.lang.ref.WeakReference@7aa582af}]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Oct 03, 2012 5:35:03 PM org.apache.catalina.loader.WebappClassLoadercheckThreadLocalMapForLeaks
SEVERE: The web application [/ETL_Procedures] created a ThreadLocal with key of type [com.sun.xml.bind.v2.runtime.Coordinator$1] (value [com.sun.xml.bind.v2.runtime.Coordinator$1@826ee11]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@33d7a245]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
Oct 03, 2012 5:35:03 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/ETL_Procedures] created a ThreadLocal with key of type [org.glassfish.gmbal.generic.OperationTracer$1] (value [org.glassfish.gmbal.generic.OperationTracer$1@4c24821]) and a value of type [java.util.ArrayList] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.