src/hotspot/share/code/codeBlob.hpp

@@ -56,10 +56,11 @@
  //  RuntimeBlob          : Non-compiled method code; generated glue code
  //   BufferBlob          : Used for non-relocatable code such as interpreter, stubroutines, etc.
  //    AdapterBlob        : Used to hold C2I/I2C adapters
  //    VtableBlob         : Used for holding vtable chunks
  //    MethodHandlesAdapterBlob : Used to hold MethodHandles adapters
+ //    BufferedInlineTypeBlob   : used for pack/unpack handlers
  //   RuntimeStub         : Call to VM runtime methods
  //   SingletonBlob       : Super-class for all blobs that exist in only one instance
  //    DeoptimizationBlob : Used for deoptimization
  //    ExceptionBlob      : Used for stack unrolling
  //    SafepointBlob      : Used to handle illegal instruction exceptions

@@ -79,10 +80,11 @@
    Nmethod,
    Buffer,
    Adapter,
    Vtable,
    MH_Adapter,
+   BufferedInlineType,
    Runtime_Stub,
    Deoptimization,
    Exception,
    Safepoint,
    Uncommon_Trap,

@@ -159,10 +161,11 @@
    bool is_exception_stub() const              { return _kind == CodeBlobKind::Exception; }
    bool is_safepoint_stub() const              { return _kind == CodeBlobKind::Safepoint; }
    bool is_adapter_blob() const                { return _kind == CodeBlobKind::Adapter; }
    bool is_vtable_blob() const                 { return _kind == CodeBlobKind::Vtable; }
    bool is_method_handles_adapter_blob() const { return _kind == CodeBlobKind::MH_Adapter; }
+   bool is_buffered_inline_type_blob() const   { return _kind == CodeBlobKind::BufferedInlineType; }
    bool is_upcall_stub() const                 { return _kind == CodeBlobKind::Upcall; }
  
    // Casting
    nmethod* as_nmethod_or_null()               { return is_nmethod() ? (nmethod*) this : nullptr; }
    nmethod* as_nmethod()                       { assert(is_nmethod(), "must be nmethod"); return (nmethod*) this; }

@@ -300,17 +303,19 @@
  class BufferBlob: public RuntimeBlob {
    friend class VMStructs;
    friend class AdapterBlob;
    friend class VtableBlob;
    friend class MethodHandlesAdapterBlob;
+   friend class BufferedInlineTypeBlob;
    friend class UpcallStub;
    friend class WhiteBox;
  
   private:
    // Creation support
    BufferBlob(const char* name, CodeBlobKind kind, int size);
-   BufferBlob(const char* name, CodeBlobKind kind, CodeBuffer* cb, int size);
+   BufferBlob(const char* name, CodeBlobKind kind, CodeBuffer* cb, int size, int header_size);
+   BufferBlob(const char* name, CodeBlobKind kind, CodeBuffer* cb, int size, int frame_complete, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments = false);
  
    void* operator new(size_t s, unsigned size) throw();
  
   public:
    // Creation

@@ -330,15 +335,21 @@
  //----------------------------------------------------------------------------------------------------
  // AdapterBlob: used to hold C2I/I2C adapters
  
  class AdapterBlob: public BufferBlob {
  private:
-   AdapterBlob(int size, CodeBuffer* cb);
+   AdapterBlob(int size, CodeBuffer* cb, int frame_complete, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments = false);
  
  public:
    // Creation
-   static AdapterBlob* create(CodeBuffer* cb);
+   static AdapterBlob* create(CodeBuffer* cb,
+                              int frame_complete,
+                              int frame_size,
+                              OopMapSet* oop_maps,
+                              bool caller_must_gc_arguments = false);
+ 
+   bool caller_must_gc_arguments(JavaThread* thread) const { return true; }
  };
  
  //---------------------------------------------------------------------------------------------------
  class VtableBlob: public BufferBlob {
  private:

@@ -361,10 +372,29 @@
  public:
    // Creation
    static MethodHandlesAdapterBlob* create(int buffer_size);
  };
  
+ //----------------------------------------------------------------------------------------------------
+ // BufferedInlineTypeBlob : used for pack/unpack handlers
+ 
+ class BufferedInlineTypeBlob: public BufferBlob {
+ private:
+   const int _pack_fields_off;
+   const int _pack_fields_jobject_off;
+   const int _unpack_fields_off;
+ 
+   BufferedInlineTypeBlob(int size, CodeBuffer* cb, int pack_fields_off, int pack_fields_jobject_off, int unpack_fields_off);
+ 
+ public:
+   // Creation
+   static BufferedInlineTypeBlob* create(CodeBuffer* cb, int pack_fields_off, int pack_fields_jobject_off, int unpack_fields_off);
+ 
+   address pack_fields() const { return code_begin() + _pack_fields_off; }
+   address pack_fields_jobject() const { return code_begin() + _pack_fields_jobject_off; }
+   address unpack_fields() const { return code_begin() + _unpack_fields_off; }
+ };
  
  //----------------------------------------------------------------------------------------------------
  // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine
  
  class RuntimeStub: public RuntimeBlob {