--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/memory/generationSpec.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2001-2004 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.
+ *
+ */
+
+// The specification of a generation.  This class also encapsulates
+// some generation-specific behavior.  This is done here rather than as a
+// virtual function of Generation because these methods are needed in
+// initialization of the Generations.
+class GenerationSpec : public CHeapObj {
+  friend class VMStructs;
+private:
+  Generation::Name _name;
+  size_t           _init_size;
+  size_t           _max_size;
+
+public:
+  GenerationSpec(Generation::Name name, size_t init_size, size_t max_size) {
+    _name = name;
+    _init_size = init_size;
+    _max_size = max_size;
+  }
+
+  Generation* init(ReservedSpace rs, int level, GenRemSet* remset);
+
+  // Accessors
+  Generation::Name name()        const { return _name; }
+  size_t init_size()             const { return _init_size; }
+  void set_init_size(size_t size)      { _init_size = size; }
+  size_t max_size()              const { return _max_size; }
+  void set_max_size(size_t size)       { _max_size = size; }
+
+  // Alignment
+  void align(size_t alignment) {
+    set_init_size(align_size_up(init_size(), alignment));
+    set_max_size(align_size_up(max_size(), alignment));
+  }
+
+  // Return the number of regions contained in the generation which
+  // might need to be independently covered by a remembered set.
+  virtual int n_covered_regions() const { return 1; }
+};
+
+typedef GenerationSpec* GenerationSpecPtr;
+
+// The specification of a permanent generation. This class is very
+// similar to GenerationSpec in use. Due to PermGen's not being a
+// true Generation, we cannot combine the spec classes either.
+class PermanentGenerationSpec : public CHeapObj {
+  friend class VMStructs;
+private:
+  PermGen::Name    _name;
+  size_t           _init_size;
+  size_t           _max_size;
+  size_t           _read_only_size;
+  size_t           _read_write_size;
+  size_t           _misc_data_size;
+  size_t           _misc_code_size;
+  bool             _enable_shared_spaces;
+
+  enum {
+    _n_spaces = 2
+  };
+
+public:
+  PermanentGenerationSpec(PermGen::Name name, size_t init_size,
+                          size_t max_size, size_t read_only_size,
+                          size_t read_write_size, size_t misc_data_size,
+                          size_t misc_code_size);
+
+  PermGen* init(ReservedSpace rs, size_t init_size, GenRemSet* remset);
+
+  void disable_sharing() {
+    _enable_shared_spaces = false;
+    _read_only_size = 0;
+    _read_write_size = 0;
+    _misc_data_size = 0;
+    _misc_code_size = 0;
+  }
+
+  // Accessors
+  PermGen::Name name()           const { return _name; }
+  size_t init_size()             const { return _init_size; }
+  void set_init_size(size_t size)      { _init_size = size; }
+
+  // Max size for user DOES NOT include shared spaces.
+  // Max size for space allocation DOES include shared spaces.
+  size_t max_size() const {
+    return _max_size + _read_only_size + _read_write_size;
+  }
+
+  // Need one covered region for the main space, and one for the shared
+  // spaces (together).
+  int n_covered_regions() const { return 2; }
+
+  void align(size_t alignment);
+
+  size_t read_only_size() const { return _read_only_size; }
+  size_t read_write_size() const { return _read_write_size; }
+  size_t misc_data_size() const { return _misc_data_size; }
+  size_t misc_code_size() const { return _misc_code_size; }
+  bool enable_shared_spaces()    const { return _enable_shared_spaces; }
+};