1 /*
   2  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

 118   static void initialize();
 119 
 120   // Scavenge entry point
 121   static void invoke();
 122   // Return true is a collection was done.  Return
 123   // false if the collection was skipped.
 124   static bool invoke_no_policy();
 125 
 126   // If an attempt to promote fails, this method is invoked
 127   static void oop_promotion_failed(oop obj, markOop obj_mark);
 128 
 129   template <class T> static inline bool should_scavenge(T* p);
 130 
 131   // These call should_scavenge() above and, if it returns true, also check that
 132   // the object was not newly copied into to_space.  The version with the bool
 133   // argument is a convenience wrapper that fetches the to_space pointer from
 134   // the heap and calls the other version (if the arg is true).
 135   template <class T> static inline bool should_scavenge(T* p, MutableSpace* to_space);
 136   template <class T> static inline bool should_scavenge(T* p, bool check_to_space);
 137 
 138   template <class T> inline static void copy_and_push_safe_barrier(PSPromotionManager* pm, T* p);

 139 
 140   // Is an object in the young generation
 141   // This assumes that the HeapWord argument is in the heap,
 142   // so it only checks one side of the complete predicate.
 143   inline static bool is_obj_in_young(HeapWord* o) {
 144     const bool result = (o >= _young_generation_boundary);
 145     return result;
 146   }
 147 };
 148 
 149 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_HPP

   1 /*
   2  * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

 118   static void initialize();
 119 
 120   // Scavenge entry point
 121   static void invoke();
 122   // Return true is a collection was done.  Return
 123   // false if the collection was skipped.
 124   static bool invoke_no_policy();
 125 
 126   // If an attempt to promote fails, this method is invoked
 127   static void oop_promotion_failed(oop obj, markOop obj_mark);
 128 
 129   template <class T> static inline bool should_scavenge(T* p);
 130 
 131   // These call should_scavenge() above and, if it returns true, also check that
 132   // the object was not newly copied into to_space.  The version with the bool
 133   // argument is a convenience wrapper that fetches the to_space pointer from
 134   // the heap and calls the other version (if the arg is true).
 135   template <class T> static inline bool should_scavenge(T* p, MutableSpace* to_space);
 136   template <class T> static inline bool should_scavenge(T* p, bool check_to_space);
 137 
 138   template <class T, bool promote_immediately>
 139     inline static void copy_and_push_safe_barrier(PSPromotionManager* pm, T* p);
 140 
 141   // Is an object in the young generation
 142   // This assumes that the HeapWord argument is in the heap,
 143   // so it only checks one side of the complete predicate.
 144   inline static bool is_obj_in_young(HeapWord* o) {
 145     const bool result = (o >= _young_generation_boundary);
 146     return result;
 147   }
 148 };
 149 
 150 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_HPP