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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/java/security/VMAccessControlState.java
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+/* 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;
+ }
+}