src/hotspot/share/gc/z/zRootsIterator.hpp

Concurrent class unloading

*** 76,85 ****
--- 76,86 ----
    void weak_oops_do(BoolObjectClosure* is_alive, OopClosure* cl);
  };
  
  class ZRootsIterator {
  private:
+   bool                _strong_only;
    ZOopStorageIterator _vm_weak_handles_iter;
    ZOopStorageIterator _jni_handles_iter;
    ZOopStorageIterator _jni_weak_handles_iter;
    ZOopStorageIterator _string_table_iter;
  
***************
*** 92,101 ****
--- 93,103 ----
    void do_jvmti_export(OopClosure* cl);
    void do_jvmti_weak_export(OopClosure* cl);
    void do_jfr_weak(OopClosure* cl);
    void do_system_dictionary(OopClosure* cl);
    void do_class_loader_data_graph(OopClosure* cl);
+   void do_class_loader_data_graph_strong_only(OopClosure* cl);
    void do_threads(OopClosure* cl);
    void do_code_cache(OopClosure* cl);
    void do_string_table(OopClosure* cl);
  
    ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_universe>                  _universe;
***************
*** 107,122 ****
    ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_system_dictionary>         _system_dictionary;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_vm_weak_handles>         _vm_weak_handles;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_jni_handles>             _jni_handles;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_jni_weak_handles>        _jni_weak_handles;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_class_loader_data_graph> _class_loader_data_graph;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_threads>                 _threads;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_code_cache>              _code_cache;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_string_table>            _string_table;
  
  public:
!   ZRootsIterator();
    ~ZRootsIterator();
  
    void oops_do(OopClosure* cl, bool visit_jvmti_weak_export = false);
  };
  
--- 109,125 ----
    ZSerialOopsDo<ZRootsIterator, &ZRootsIterator::do_system_dictionary>         _system_dictionary;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_vm_weak_handles>         _vm_weak_handles;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_jni_handles>             _jni_handles;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_jni_weak_handles>        _jni_weak_handles;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_class_loader_data_graph> _class_loader_data_graph;
+   ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_class_loader_data_graph_strong_only> _class_loader_data_graph_strong_only;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_threads>                 _threads;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_code_cache>              _code_cache;
    ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_string_table>            _string_table;
  
  public:
!   ZRootsIterator(bool strong_only);
    ~ZRootsIterator();
  
    void oops_do(OopClosure* cl, bool visit_jvmti_weak_export = false);
  };