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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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 * 2 along with this work; if not, write to the Free Software Foundation,
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#ifndef SHARE_GC_PARALLEL_PSSTRINGDEDUP_HPP
#define SHARE_GC_PARALLEL_PSSTRINGDEDUP_HPP

#include "gc/parallel/psScavenge.hpp"
#include "gc/shared/stringdedup/stringDedup.hpp"
#include "memory/allStatic.hpp"
#include "oops/oopsHierarchy.hpp"

class psStringDedup : AllStatic {
public:
  static bool is_candidate_from_mark(oop java_string) {
    // Candidate if string is being evacuated from young to old but has not
    // reached the deduplication age threshold, i.e. has not previously been a
    // candidate during its life in the young generation.
    return PSScavenge::is_obj_in_young(java_string) &&
           StringDedup::is_below_threshold_age(java_string->age());
  }

  static bool is_candidate_from_evacuation(oop obj,
                                           bool obj_is_tenured) {
    return obj_is_tenured ?
           StringDedup::is_below_threshold_age(obj->age()) :
           StringDedup::is_threshold_age(obj->age());
  }
};
#endif // SHARE_GC_PARALLEL_PSSTRINGDEDUP_HPP