rev 53848 : 8219469: ZGC: Extract functions out from ZNMethodTable into new ZNMethod class

   1 /*
   2  * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  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 #ifndef SHARE_GC_Z_ZNMETHODTABLE_HPP
  25 #define SHARE_GC_Z_ZNMETHODTABLE_HPP
  26 




  27 #include "gc/z/zNMethodTableIteration.hpp"
  28 #include "memory/allocation.hpp"
  29 
  30 class nmethod;
  31 class ZNMethodClosure;
  32 class ZNMethodTableEntry;

  33 class ZWorkers;
  34 
  35 class ZNMethodTable : public AllStatic {
  36 private:
  37   static ZNMethodTableEntry*    _table;
  38   static size_t                 _size;
  39   static size_t                 _nregistered;
  40   static size_t                 _nunregistered;
  41   static ZNMethodTableIteration _iteration;
  42 
  43   static ZNMethodTableEntry* create(size_t size);
  44   static void destroy(ZNMethodTableEntry* table);
  45 



  46   static size_t first_index(const nmethod* nm, size_t size);
  47   static size_t next_index(size_t prev_index, size_t size);
  48 


  49   static bool register_entry(ZNMethodTableEntry* table, size_t size, nmethod* nm);
  50   static void unregister_entry(ZNMethodTableEntry* table, size_t size, nmethod* nm);
  51 
  52   static void rebuild(size_t new_size);
  53   static void rebuild_if_needed();
  54 



  55 public:
  56   static size_t registered_nmethods();
  57   static size_t unregistered_nmethods();
  58 
  59   static void register_nmethod(nmethod* nm);
  60   static void unregister_nmethod(nmethod* nm);

  61 
  62   static void wait_until_iteration_done();




  63 
  64   static void nmethods_do_begin();
  65   static void nmethods_do_end();
  66   static void nmethods_do(ZNMethodClosure* cl);
  67 
  68   static void unlink(ZWorkers* workers, bool unloading_occurred);
  69   static void purge(ZWorkers* workers);
  70 };
  71 
  72 #endif // SHARE_GC_Z_ZNMETHODTABLE_HPP
--- EOF ---