--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/memory/permGen.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2000-2005 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// All heaps contains a "permanent generation," containing permanent
+// (reflective) objects.  This is like a regular generation in some ways,
+// but unlike one in others, and so is split apart.
+
+class Generation;
+class GenRemSet;
+class CSpaceCounters;
+
+// PermGen models the part of the heap
+
+class PermGen : public CHeapObj {
+  friend class VMStructs;
+ protected:
+  size_t _capacity_expansion_limit;  // maximum expansion allowed without a
+                                     // full gc occuring
+
+ public:
+  enum Name {
+    MarkSweepCompact, MarkSweep, ConcurrentMarkSweep
+  };
+
+  // Permanent allocation (initialized)
+  virtual HeapWord* mem_allocate(size_t size) = 0;
+
+  // Mark sweep support
+  virtual void compute_new_size() = 0;
+
+  // Ideally, we would use MI (IMHO) but we'll do delegation instead.
+  virtual Generation* as_gen() const = 0;
+
+  virtual void oop_iterate(OopClosure* cl) {
+    Generation* g = as_gen();
+    assert(g != NULL, "as_gen() NULL");
+    g->oop_iterate(cl);
+  }
+
+  virtual void object_iterate(ObjectClosure* cl) {
+    Generation* g = as_gen();
+    assert(g != NULL, "as_gen() NULL");
+    g->object_iterate(cl);
+  }
+
+  // Performance Counter support
+  virtual void update_counters() {
+    Generation* g = as_gen();
+    assert(g != NULL, "as_gen() NULL");
+    g->update_counters();
+  }
+};