src/share/vm/jfr/recorder/storage/jfrStorageUtils.hpp

rev 9053 : 8220293: Deadlock in JFR string pool
Reviewed-by: rehn, egahlin

*** 90,100 ****
    ConcurrentWriteOpExcludeRetired(Operation& operation) : ConcurrentWriteOp<Operation>(operation) {}
    bool process(Type* t);
    size_t processed() const { return ConcurrentWriteOp<Operation>::processed(); }
  };
  
- 
  template <typename Operation>
  class MutexedWriteOp {
   private:
    Operation& _operation;
   public:
--- 90,99 ----
*** 102,111 ****
--- 101,119 ----
    MutexedWriteOp(Operation& operation) : _operation(operation) {}
    bool process(Type* t);
    size_t processed() const { return _operation.processed(); }
  };
  
+ template <typename Operation>
+ class ExclusiveOp : private MutexedWriteOp<Operation> {
+  public:
+   typedef typename Operation::Type Type;
+   ExclusiveOp(Operation& operation) : MutexedWriteOp<Operation>(operation) {}
+   bool process(Type* t);
+   size_t processed() const { return MutexedWriteOp<Operation>::processed(); }
+ };
+ 
  enum jfr_operation_mode {
    mutexed = 1,
    concurrent
  };