src/hotspot/share/oops/method.hpp

@@ -58,14 +58,16 @@
  class CheckedExceptionElement;
  class LocalVariableTableElement;
  class AdapterHandlerEntry;
  class MethodData;
  class MethodCounters;
+ class MethodTrainingData;
  class ConstMethod;
  class InlineTableSizes;
  class nmethod;
  class InterpreterOopMap;
+ class SCCEntry;
  
  class Method : public Metadata {
   friend class VMStructs;
   friend class JVMCIVMStructs;
   friend class MethodTest;

@@ -100,10 +102,13 @@
    // time (whenever a compile completes).  It can transition from not-null to
    // null only at safepoints (because of a de-opt).
    nmethod* volatile _code;                   // Points to the corresponding piece of native code
    volatile address  _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry
  
+   nmethod*  _preload_code;  // preloaded SCCache code
+   SCCEntry* _scc_entry;     // SCCache entry for pre-loading code
+ 
    // Constructor
    Method(ConstMethod* xconst, AccessFlags access_flags, Symbol* name);
   public:
  
    static Method* allocate(ClassLoaderData* loader_data,

@@ -313,10 +318,15 @@
    // method data access
    MethodData* method_data() const              {
      return _method_data;
    }
  
+   void set_method_data(MethodData* data);
+ 
+   MethodTrainingData* training_data_or_null() const;
+   bool init_training_data(MethodTrainingData* tdata);
+ 
    // mark an exception handler as entered (used to prune dead catch blocks in C2)
    void set_exception_handler_entered(int handler_bci);
  
    MethodCounters* method_counters() const {
      return _method_counters;

@@ -340,11 +350,11 @@
  
    bool was_executed_more_than(int n);
    bool was_never_executed()                     { return !was_executed_more_than(0);  }
  
    static void build_profiling_method_data(const methodHandle& method, TRAPS);
- 
+   static bool install_training_method_data(const methodHandle& method);
    static MethodCounters* build_method_counters(Thread* current, Method* m);
  
    int interpreter_invocation_count()            { return invocation_count();          }
  
  #ifndef PRODUCT

@@ -380,10 +390,20 @@
    }
    void set_from_compiled_entry(address entry) {
      _from_compiled_entry =  entry;
    }
  
+   void set_preload_code(nmethod* code) {
+     _preload_code = code;
+   }
+   void set_scc_entry(SCCEntry* entry) {
+     _scc_entry = entry;
+   }
+   SCCEntry* scc_entry() const {
+     return _scc_entry;
+   }
+ 
    address get_i2c_entry();
    address get_c2i_entry();
    address get_c2i_unverified_entry();
    address get_c2i_no_clinit_check_entry();
    AdapterHandlerEntry* adapter() const {

@@ -594,10 +614,11 @@
    // NOTE: code() is inherently racy as deopt can be clearing code
    // simultaneously. Use with caution.
    bool has_compiled_code() const;
  
    bool needs_clinit_barrier() const;
+   bool code_has_clinit_barriers() const;
  
    // sizing
    static int header_size()                       {
      return align_up((int)sizeof(Method), wordSize) / wordSize;
    }