--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc/serial/tenuredGeneration.hpp	Wed May 13 15:16:06 2015 +0200
@@ -0,0 +1,131 @@
+/*
+ * 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_SERIAL_TENUREDGENERATION_HPP
+#define SHARE_VM_GC_SERIAL_TENUREDGENERATION_HPP
+
+#include "gc/serial/cSpaceCounters.hpp"
+#include "gc/shared/cardGeneration.hpp"
+#include "gc/shared/gcStats.hpp"
+#include "gc/shared/generationCounters.hpp"
+#include "utilities/macros.hpp"
+
+// TenuredGeneration models the heap containing old (promoted/tenured) objects
+// contained in a single contiguous space.
+//
+// Garbage collection is performed using mark-compact.
+
+class TenuredGeneration: public CardGeneration {
+  friend class VMStructs;
+  // Abstractly, this is a subtype that gets access to protected fields.
+  friend class VM_PopulateDumpSharedSpace;
+
+ protected:
+  ContiguousSpace*  _the_space;       // Actual space holding objects
+
+  GenerationCounters*   _gen_counters;
+  CSpaceCounters*       _space_counters;
+
+  // Allocation failure
+  virtual bool expand(size_t bytes, size_t expand_bytes);
+
+  // Accessing spaces
+  ContiguousSpace* space() const { return _the_space; }
+
+  void assert_correct_size_change_locking();
+ public:
+  TenuredGeneration(ReservedSpace rs, size_t initial_byte_size,
+                               int level, GenRemSet* remset);
+
+  Generation::Name kind() { return Generation::MarkSweepCompact; }
+
+  // Printing
+  const char* name() const { return "tenured generation"; }
+  const char* short_name() const { return "Tenured"; }
+
+  // Does a "full" (forced) collection invoked on this generation collect
+  // all younger generations as well? Note that this is a
+  // hack to allow the collection of the younger gen first if the flag is
+  // set.
+  virtual bool full_collects_younger_generations() const {
+    return !ScavengeBeforeFullGC;
+  }
+
+  size_t unsafe_max_alloc_nogc() const;
+  size_t contiguous_available() const;
+
+  // Iteration
+  void object_iterate(ObjectClosure* blk);
+
+  virtual inline HeapWord* allocate(size_t word_size, bool is_tlab);
+  virtual inline HeapWord* par_allocate(size_t word_size, bool is_tlab);
+
+#define TenuredGen_SINCE_SAVE_MARKS_DECL(OopClosureType, nv_suffix)     \
+  void oop_since_save_marks_iterate##nv_suffix(OopClosureType* cl);
+  TenuredGen_SINCE_SAVE_MARKS_DECL(OopsInGenClosure,_v)
+  SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(TenuredGen_SINCE_SAVE_MARKS_DECL)
+
+  void save_marks();
+  void reset_saved_marks();
+  bool no_allocs_since_save_marks();
+
+  inline size_t block_size(const HeapWord* addr) const;
+
+  inline bool block_is_obj(const HeapWord* addr) const;
+
+  virtual void collect(bool full,
+                       bool clear_all_soft_refs,
+                       size_t size,
+                       bool is_tlab);
+  HeapWord* expand_and_allocate(size_t size,
+                                bool is_tlab,
+                                bool parallel = false);
+
+  virtual void prepare_for_verify();
+
+
+  virtual void gc_prologue(bool full);
+  virtual void gc_epilogue(bool full);
+  bool should_collect(bool   full,
+                      size_t word_size,
+                      bool   is_tlab);
+
+  virtual void compute_new_size();
+
+  // Performance Counter support
+  void update_counters();
+
+  virtual void record_spaces_top();
+
+  // Statistics
+
+  virtual void update_gc_stats(int level, bool full);
+
+  virtual bool promotion_attempt_is_safe(size_t max_promoted_in_bytes) const;
+
+  virtual void verify();
+  virtual void print_on(outputStream* st) const;
+};
+
+#endif // SHARE_VM_GC_SERIAL_TENUREDGENERATION_HPP