| /* VMAccessControlState.java -- per-thread state for the access controller. |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.security; |
| |
| import java.util.LinkedList; |
| |
| class VMAccessControlState |
| { |
| /** |
| * A list of {@link AccessControlContext} objects (which can be |
| * null) for each call to {@link AccessController#doPrivileged()} in |
| * the thread's call stack. |
| */ |
| private LinkedList contexts = new LinkedList(); |
| |
| /** |
| * A flag indicating that we are within a call to {@link |
| * VMAccessController#getContext()}. |
| */ |
| private boolean inGetContext = false; |
| |
| /** |
| * Not directly instantiable: use getThreadState() instead. |
| */ |
| private VMAccessControlState() {} |
| |
| /** |
| * Return an object representing the access control state of this |
| * thread. |
| * |
| * @return The access control state of this thread, or |
| * <code>null</code> if the VM is not initialized to the point of |
| * being able to return this. |
| */ |
| static native VMAccessControlState getThreadState(); |
| |
| /** |
| * Indicate whether this thread is within a call to {@link |
| * VMAccessController#getContext()}. |
| * |
| * @return <code>true</code> if this thread is within a call to |
| * {@link VMAccessController#getContext()}. |
| */ |
| boolean isInGetContext() |
| { |
| return inGetContext; |
| } |
| |
| /** |
| * Specify whether this thread is within a call to {@link |
| * VMAccessController#getContext()}. |
| */ |
| void setInGetContext(boolean inGetContext) |
| { |
| this.inGetContext = inGetContext; |
| } |
| |
| /** |
| * Return a list of {@link AccessControlContext} objects (which can |
| * be null) for each call to {@link AccessController#doPrivileged()} |
| * in the thread's call stack. |
| * |
| * @return a list of {@link AccessControlContext} objects. |
| */ |
| LinkedList getContexts() |
| { |
| return contexts; |
| } |
| } |