8079792: GC directory structure cleanup

Reviewed-by: brutisso, stefank, david

hotspot/src/share/vm/gc/parallel/generationSizer.hpp

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2001, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_PARALLEL_GENERATIONSIZER_HPP
+#define SHARE_VM_GC_PARALLEL_GENERATIONSIZER_HPP
+
+#include "gc/shared/collectorPolicy.hpp"
+
+// There is a nice batch of tested generation sizing code in
+// GenCollectorPolicy. Lets reuse it!
+
+class GenerationSizer : public GenCollectorPolicy {
+ private:
+
+  void trace_gen_sizes(const char* const str);
+
+  // The alignment used for boundary between young gen and old gen
+  static size_t default_gen_alignment() { return 64 * K * HeapWordSize; }
+
+ protected:
+
+  void initialize_alignments();
+  void initialize_flags();
+  void initialize_size_info();
+};
+#endif // SHARE_VM_GC_PARALLEL_GENERATIONSIZER_HPP