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  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP
  26 #define SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 #include "memory/iterator.hpp"
  30 
  31 // Helper class to aid in root scanning and cleaning of weak oops in the VM.
  32 //
  33 // New sets of weak oops added to this class will automatically
  34 // be cleaned by all GCs, including the young generation GCs.
  35 class WeakProcessor : AllStatic {
  36 public:
  37   static void unlink_or_oops_do(BoolObjectClosure* is_alive, OopClosure* keep_alive, VoidClosure* complete = NULL);








  38   static void oops_do(OopClosure* closure);
  39 };
  40 
  41 #endif // SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP

  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  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP
  26 #define SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 #include "memory/iterator.hpp"
  30 
  31 // Helper class to aid in root scanning and cleaning of weak oops in the VM.
  32 //
  33 // New contains of weak oops added to this class will automatically
  34 // be cleaned by all GCs, including the young generation GCs.
  35 class WeakProcessor : AllStatic {
  36 public:
  37   // Visit all oop*s and either apply the keep_alive closure if the referenced
  38   // object is considered alive by the is_alive closure, otherwise do some
  39   // container specific cleanup of element holding the oop.
  40   //
  41   // The complete closure is used as a post-processing step called
  42   // after each container has been processed.
  43   static void weak_oops_do(BoolObjectClosure* is_alive, OopClosure* keep_alive, VoidClosure* complete = NULL);
  44 
  45   // Visit all oop*s and apply the given clousre.
  46   static void oops_do(OopClosure* closure);
  47 };
  48 
  49 #endif // SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP