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

Concurrent class unloading

*** 23,48 ****
  
  #ifndef SHARE_GC_Z_ZNMETHODTABLE_HPP
  #define SHARE_GC_Z_ZNMETHODTABLE_HPP
  
  #include "gc/z/zGlobals.hpp"
  #include "gc/z/zNMethodTableEntry.hpp"
  #include "memory/allocation.hpp"
  
  class ZNMethodTable : public AllStatic {
  private:
    static ZNMethodTableEntry* _table;
    static size_t              _size;
    static size_t              _nregistered;
    static size_t              _nunregistered;
    static volatile size_t     _claimed ATTRIBUTE_ALIGNED(ZCacheLineSize);
  
    static ZNMethodTableEntry create_entry(nmethod* nm);
    static void destroy_entry(ZNMethodTableEntry entry);
  
-   static nmethod* method(ZNMethodTableEntry entry);
- 
    static size_t first_index(const nmethod* nm, size_t size);
    static size_t next_index(size_t prev_index, size_t size);
  
    static bool register_entry(ZNMethodTableEntry* table, size_t size, ZNMethodTableEntry entry);
    static bool unregister_entry(ZNMethodTableEntry* table, size_t size, const nmethod* nm);
--- 23,52 ----
  
  #ifndef SHARE_GC_Z_ZNMETHODTABLE_HPP
  #define SHARE_GC_Z_ZNMETHODTABLE_HPP
  
  #include "gc/z/zGlobals.hpp"
+ #include "gc/z/zLock.hpp"
  #include "gc/z/zNMethodTableEntry.hpp"
  #include "memory/allocation.hpp"
  
+ class ZWorkers;
+ 
  class ZNMethodTable : public AllStatic {
  private:
+   static ZLock               _rebuild_lock;
    static ZNMethodTableEntry* _table;
+   static ZNMethodTableEntry* _scanned_table;
    static size_t              _size;
+   static size_t              _scanned_table_size;
    static size_t              _nregistered;
    static size_t              _nunregistered;
    static volatile size_t     _claimed ATTRIBUTE_ALIGNED(ZCacheLineSize);
  
    static ZNMethodTableEntry create_entry(nmethod* nm);
    static void destroy_entry(ZNMethodTableEntry entry);
  
    static size_t first_index(const nmethod* nm, size_t size);
    static size_t next_index(size_t prev_index, size_t size);
  
    static bool register_entry(ZNMethodTableEntry* table, size_t size, ZNMethodTableEntry entry);
    static bool unregister_entry(ZNMethodTableEntry* table, size_t size, const nmethod* nm);
***************
*** 51,62 ****
    static void rebuild_if_needed();
  
    static void log_register(const nmethod* nm, ZNMethodTableEntry entry);
    static void log_unregister(const nmethod* nm);
  
-   static void entry_oops_do(ZNMethodTableEntry entry, OopClosure* cl);
- 
  public:
    static size_t registered_nmethods();
    static size_t unregistered_nmethods();
  
    static void register_nmethod(nmethod* nm);
--- 55,64 ----
***************
*** 64,71 ****
--- 66,80 ----
  
    static void gc_prologue();
    static void gc_epilogue();
  
    static void oops_do(OopClosure* cl);
+ 
+   static nmethod* method(ZNMethodTableEntry entry);
+   static void entry_oops_do(ZNMethodTableEntry* entry, OopClosure* cl);
+   static void entry_oops_do_no_fixup(ZNMethodTableEntry* entry, OopClosure* cl);
+   static void nmethod_entries_do(ZNMethodTableEntryClosure* cl);
+   static void do_unloading(ZWorkers* workers, BoolObjectClosure* is_alive, bool unloading_occurred);
+   static void purge(ZWorkers* workers, BoolObjectClosure* is_alive);
  };
  
  #endif // SHARE_GC_Z_ZNMETHODTABLE_HPP