src/hotspot/share/gc/shared/weakProcessor.hpp
author stefank
Thu, 22 Feb 2018 18:36:32 +0100
changeset 49048 4e8c86b75428
parent 47676 b1c020fc35a3
child 51546 b9f6a4427da9
permissions -rw-r--r--
8198525: Move _size_policy out of GenCollectorPolicy into GenCollectedHeap Reviewed-by: pliden, sjohanss

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * accompanied this code).
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#ifndef SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP
#define SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP

#include "memory/allocation.hpp"
#include "memory/iterator.hpp"

// Helper class to aid in root scanning and cleaning of weak oops in the VM.
//
// New containers of weak oops added to this class will automatically
// be cleaned by all GCs, including the young generation GCs.
class WeakProcessor : AllStatic {
public:
  // Visit all oop*s and apply the keep_alive closure if the referenced
  // object is considered alive by the is_alive closure, otherwise do some
  // container specific cleanup of element holding the oop.
  static void weak_oops_do(BoolObjectClosure* is_alive, OopClosure* keep_alive);

  // Visit all oop*s and apply the given closure.
  static void oops_do(OopClosure* closure);
};

#endif // SHARE_VM_GC_SHARED_WEAKPROCESSOR_HPP