Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- a/src/share/vm/utilities/hashtable.hpp	Fri May 05 06:07:11 2017 -0700
     1.2 +++ b/src/share/vm/utilities/hashtable.hpp	Mon May 15 12:20:15 2017 +0200
     1.3 @@ -164,11 +164,11 @@
     1.4    // Instance variables
     1.5    int               _table_size;
     1.6    HashtableBucket<F>*     _buckets;
     1.7 -  BasicHashtableEntry<F>* _free_list;
     1.8 +  BasicHashtableEntry<F>* volatile _free_list;
     1.9    char*             _first_free_entry;
    1.10    char*             _end_block;
    1.11    int               _entry_size;
    1.12 -  int               _number_of_entries;
    1.13 +  volatile int      _number_of_entries;
    1.14  
    1.15  protected:
    1.16  
    1.17 @@ -215,6 +215,24 @@
    1.18    // Free the buckets in this hashtable
    1.19    void free_buckets();
    1.20  
    1.21 +  // Helper data structure containing context for the bucket entry unlink process,
    1.22 +  // storing the unlinked buckets in a linked list.
    1.23 +  // Also avoids the need to pass around these four members as parameters everywhere.
    1.24 +  struct BucketUnlinkContext {
    1.25 +    int _num_processed;
    1.26 +    int _num_removed;
    1.27 +    // Head and tail pointers for the linked list of removed entries.
    1.28 +    BasicHashtableEntry<F>* _removed_head;
    1.29 +    BasicHashtableEntry<F>* _removed_tail;
    1.30 +
    1.31 +    BucketUnlinkContext() : _num_processed(0), _num_removed(0), _removed_head(NULL), _removed_tail(NULL) {
    1.32 +    }
    1.33 +
    1.34 +    void free_entry(BasicHashtableEntry<F>* entry);
    1.35 +  };
    1.36 +  // Add of bucket entries linked together in the given context to the global free list. This method
    1.37 +  // is mt-safe wrt. to other calls of this method.
    1.38 +  void bulk_free_entries(BucketUnlinkContext* context);
    1.39  public:
    1.40    int table_size() { return _table_size; }
    1.41    void set_entry(int index, BasicHashtableEntry<F>* entry);