Thread.java (accessControlState): New field.

2006-08-14  Gary Benson  <gbenson@redhat.com>

	* java/lang/Thread.java (accessControlState): New field.
	* java/security/VMAccessControlState.java: New file.
	* java/security/natVMAccessControlState.cc: Likewise.
	* java/security/VMAccessController.java
	(contexts, inGetContext): Removed.
	(pushContext, popContext, getContext): Use VMAccessControlState.
	* Makefile.am (nat_source_files): Updated.
	* sources.am, Makefile.in: Rebuilt.

From-SVN: r116128

1 files changed, 103 insertions, 0 deletions

diff --git a/libjava/java/security/VMAccessControlState.java b/libjava/java/security/VMAccessControlState.java
new file mode 100644
index 0000000..360f08a
--- /dev/null
+++ b/libjava/java/security/VMAccessControlState.java
@@ -0,0 +1,103 @@
+/* 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;
+  }
+}