share/gc/parallel/psOldGen.hpp

rev 1 : G1GC+POGC+NVDIMM Patch with latest comments incorporated from all.

*** 1,7 ****
  /*
!  * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 57,66 ****
--- 57,69 ----
    // Sizing information, in bytes, set in constructor
    const size_t _init_gen_size;
    const size_t _min_gen_size;
    const size_t _max_gen_size;
  
+   // NVDIMM handle to expand/shrink old gen on NVDIMM.
+   int _nvdimm_fd;
+ 
    // Used when initializing the _name field.
    static inline const char* select_name();
  
  #ifdef ASSERT
    void assert_block_in_covered_region(MemRegion new_memregion) {
*** 135,145 ****
    virtual void initialize_performance_counters(const char* perf_data_name, int level);
  
    MemRegion reserved() const                { return _reserved; }
    virtual size_t max_gen_size()             { return _max_gen_size; }
    size_t min_gen_size()                     { return _min_gen_size; }
! 
    // Returns limit on the maximum size of the generation.  This
    // is the same as _max_gen_size for PSOldGen but need not be
    // for a derived class.
    virtual size_t gen_size_limit();
  
--- 138,148 ----
    virtual void initialize_performance_counters(const char* perf_data_name, int level);
  
    MemRegion reserved() const                { return _reserved; }
    virtual size_t max_gen_size()             { return _max_gen_size; }
    size_t min_gen_size()                     { return _min_gen_size; }
!   int nvdimm_fd()                           { return _nvdimm_fd; }
    // Returns limit on the maximum size of the generation.  This
    // is the same as _max_gen_size for PSOldGen but need not be
    // for a derived class.
    virtual size_t gen_size_limit();
  
*** 216,225 ****
--- 219,230 ----
    void update_counters();
  
    // Printing support
    virtual const char* name() const { return _name; }
  
+   // set up fd for NVDIMM
+   void setup_fd(int fd) {_nvdimm_fd = fd; }
    // Debugging support
    // Save the tops of all spaces for later use during mangling.
    void record_spaces_top() PRODUCT_RETURN;
  };