821 }
822 public void put(Object key, Object value) {
823 AppContext ac = getAppContext();
824 if (ac != null) {
825 ac.put(key, value);
826 }
827 }
828 public void remove(Object key) {
829 AppContext ac = getAppContext();
830 if (ac != null) {
831 ac.remove(key);
832 }
833 }
834 public boolean isDisposed() {
835 AppContext ac = getAppContext();
836 return (ac == null) ? true : ac.isDisposed();
837 }
838 public boolean isMainAppContext() {
839 return (numAppContexts.get() == 1 && mainAppContext != null);
840 }
841 public Object getContext() {
842 return getAppContext();
843 }
844 public Object getExecutionContext() {
845 return getExecutionAppContext();
846 }
847 public Object get(Object context, Object key) {
848 return ((AppContext)context).get(key);
849 }
850 public void put(Object context, Object key, Object value) {
851 ((AppContext)context).put(key, value);
852 }
853 public void remove(Object context, Object key) {
854 ((AppContext)context).remove(key);
855 }
856 });
857 }
858 }
859
860 final class MostRecentKeyValue {
861 Object key;
862 Object value;
863 MostRecentKeyValue(Object k, Object v) {
864 key = k;
865 value = v;
866 }
867 void setPair(Object k, Object v) {
868 key = k;
869 value = v;
870 }
871 }
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821 }
822 public void put(Object key, Object value) {
823 AppContext ac = getAppContext();
824 if (ac != null) {
825 ac.put(key, value);
826 }
827 }
828 public void remove(Object key) {
829 AppContext ac = getAppContext();
830 if (ac != null) {
831 ac.remove(key);
832 }
833 }
834 public boolean isDisposed() {
835 AppContext ac = getAppContext();
836 return (ac == null) ? true : ac.isDisposed();
837 }
838 public boolean isMainAppContext() {
839 return (numAppContexts.get() == 1 && mainAppContext != null);
840 }
841
842 /**
843 * Returns the AppContext used for applet logging isolation, or null if
844 * the default global context can be used.
845 * If there's no applet, or if the caller is a stand alone application,
846 * or running in the main app context, returns null.
847 * Otherwise, returns the AppContext of the calling applet.
848 * @return null if the global default context can be used,
849 * an AppContext otherwise.
850 **/
851 public Object getAppletContext() {
852 // There's no AppContext: return null.
853 // No need to call getAppContext() if numAppContext == 0:
854 // it means that no AppContext has been created yet, and
855 // we don't want to trigger the creation of a main app
856 // context since we don't need it.
857 if (numAppContexts.get() == 0) return null;
858
859 // Get the context from the security manager
860 AppContext ecx = getExecutionAppContext();
861
862 // Not sure we really need to re-check numAppContexts here.
863 // If all applets have gone away then we could have a
864 // numAppContexts coming back to 0. So we recheck
865 // it here because we don't want to trigger the
866 // creation of a main AppContext in that case.
867 // This is probably not 100% MT-safe but should reduce
868 // the window of opportunity in which that issue could
869 // happen.
870 if (numAppContexts.get() > 0) {
871 // Defaults to thread group caching.
872 // This is probably not required as we only really need
873 // isolation in a deployed applet environment, in which
874 // case ecx will not be null when we reach here
875 // However it helps emulate the deployed environment,
876 // in tests for instance.
877 ecx = ecx != null ? ecx : getAppContext();
878 }
879
880 // getAppletContext() may be called when initializing the main
881 // app context - in which case mainAppContext will still be
882 // null. To work around this issue we simply use
883 // AppContext.threadGroup.getParent() == null instead, since
884 // mainAppContext is the only AppContext which should have
885 // the root TG as its thread group.
886 // See: JDK-8023258
887 final boolean isMainAppContext = ecx == null
888 || mainAppContext == ecx
889 || mainAppContext == null && ecx.threadGroup.getParent() == null;
890
891 return isMainAppContext ? null : ecx;
892 }
893
894 });
895 }
896 }
897
898 final class MostRecentKeyValue {
899 Object key;
900 Object value;
901 MostRecentKeyValue(Object k, Object v) {
902 key = k;
903 value = v;
904 }
905 void setPair(Object k, Object v) {
906 key = k;
907 value = v;
908 }
909 }
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