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diff --git a/src/libs/xpcom18a4/xpcom/ds/nsIRecyclingAllocator.idl b/src/libs/xpcom18a4/xpcom/ds/nsIRecyclingAllocator.idl
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 2002
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Suresh Duddi <dp@netscape.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsIMemory.idl"
+
+/**
+ *
+ * nsIRecyclingAllocator: A wrapper for the nsRecyclingAllocator
+ *
+ * Holds allocations and reuses them for subsequent allocs.
+ * Thread safe and uses a timer to release freelist.
+ *
+ * @status UNDER-DEVELOPMENT
+ */
+
+[scriptable, uuid(d064a04c-9cee-4319-be31-64d565bccba9)]
+interface nsIRecyclingAllocator : nsIMemory
+{
+    void init(in size_t nblocks, in size_t recycleAfter, in string id);
+};
+
+%{C++
+#define NS_RECYCLINGALLOCATOR_CID \
+{ /* ac07ed4c-bf17-4976-a15c-d2194db3b1bf */ \
+    0xac07ed4c,                              \
+    0xbf17,                                  \
+    0x4976,                                  \
+    {0xa1, 0x5c, 0xd2, 0x19, 0x4d, 0xb3, 0xb1, 0xbf} }
+
+#define NS_RECYCLINGALLOCATOR_CLASSNAME "Recycling Allocator"
+
+#define NS_RECYCLINGALLOCATOR_CONTRACTID "@mozilla.org/recycling-allocator;1"
+%}