jdk8-mips64-public/hotspot: src/share/vm/code/codeBlob.hpp@3e8fbc61cee8

6978355: renaming for 6961697
Summary: This is the renaming part of 6961697 to keep the actual changes small for review.
Reviewed-by: kvn, never

     1 /*

     2  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 // CodeBlob - superclass for all entries in the CodeCache.

    26 //

    27 // Suptypes are:

    28 //   nmethod            : Compiled Java methods (include method that calls to native code)

    29 //   RuntimeStub        : Call to VM runtime methods

    30 //   DeoptimizationBlob : Used for deoptimizatation

    31 //   ExceptionBlob      : Used for stack unrolling

    32 //   SafepointBlob      : Used to handle illegal instruction exceptions

    33 //

    34 //

    35 // Layout:

    36 //   - header

    37 //   - relocation

    38 //   - content space

    39 //     - instruction space

    40 //   - data space

    41 class DeoptimizationBlob;

    43 class CodeBlob VALUE_OBJ_CLASS_SPEC {

    45   friend class VMStructs;

    47  private:

    48   const char* _name;

    49   int        _size;                              // total size of CodeBlob in bytes

    50   int        _header_size;                       // size of header (depends on subclass)

    51   int        _relocation_size;                   // size of relocation

    52   int        _content_offset;                    // offset to where content region begins (this includes consts, insts, stubs)

    53   int        _code_offset;                       // offset to where instructions region begins (this includes insts, stubs)

    54   int        _frame_complete_offset;             // instruction offsets in [0.._frame_complete_offset) have

    55                                                  // not finished setting up their frame. Beware of pc's in

    56                                                  // that range. There is a similar range(s) on returns

    57                                                  // which we don't detect.

    58   int        _data_offset;                       // offset to where data region begins

    59   int        _frame_size;                        // size of stack frame

    60   OopMapSet* _oop_maps;                          // OopMap for this CodeBlob

    61   CodeComments _comments;

    63   friend class OopRecorder;

    65  public:

    66   // Returns the space needed for CodeBlob

    67   static unsigned int allocation_size(CodeBuffer* cb, int header_size);

    69   // Creation

    70   // a) simple CodeBlob

    71   // frame_complete is the offset from the beginning of the instructions

    72   // to where the frame setup (from stackwalk viewpoint) is complete.

    73   CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size);

    75   // b) full CodeBlob

    76   CodeBlob(

    77     const char* name,

    78     CodeBuffer* cb,

    79     int         header_size,

    80     int         size,

    81     int         frame_complete,

    82     int         frame_size,

    83     OopMapSet*  oop_maps

    84   );

    86   // Deletion

    87   void flush();

    89   // Typing

    90   virtual bool is_buffer_blob() const                 { return false; }

    91   virtual bool is_nmethod() const                     { return false; }

    92   virtual bool is_runtime_stub() const                { return false; }

    93   virtual bool is_deoptimization_stub() const         { return false; }

    94   virtual bool is_uncommon_trap_stub() const          { return false; }

    95   virtual bool is_exception_stub() const              { return false; }

    96   virtual bool is_safepoint_stub() const              { return false; }

    97   virtual bool is_adapter_blob() const                { return false; }

    98   virtual bool is_method_handles_adapter_blob() const { return false; }

   100   virtual bool is_compiled_by_c2() const         { return false; }

   101   virtual bool is_compiled_by_c1() const         { return false; }

   103   // Casting

   104   nmethod* as_nmethod_or_null()                  { return is_nmethod() ? (nmethod*) this : NULL; }

   106   // Boundaries

   107   address    header_begin() const                { return (address)    this; }

   108   address    header_end() const                  { return ((address)   this) + _header_size; };

   109   relocInfo* relocation_begin() const            { return (relocInfo*) header_end(); };

   110   relocInfo* relocation_end() const              { return (relocInfo*)(header_end()   + _relocation_size); }

   111   address    content_begin() const               { return (address)    header_begin() + _content_offset; }

   112   address    content_end() const                 { return (address)    header_begin() + _data_offset; }

   113   address    code_begin() const                  { return (address)    header_begin() + _code_offset; }

   114   address    code_end() const                    { return (address)    header_begin() + _data_offset; }

   115   address    data_begin() const                  { return (address)    header_begin() + _data_offset; }

   116   address    data_end() const                    { return (address)    header_begin() + _size; }

   118   // Offsets

   119   int relocation_offset() const                  { return _header_size; }

   120   int content_offset() const                     { return _content_offset; }

   121   int code_offset() const                        { return _code_offset; }

   122   int data_offset() const                        { return _data_offset; }

   124   // Sizes

   125   int size() const                               { return _size; }

   126   int header_size() const                        { return _header_size; }

   127   int relocation_size() const                    { return (address) relocation_end() - (address) relocation_begin(); }

   128   int content_size() const                       { return           content_end()    -           content_begin();    }

   129   int code_size() const                          { return           code_end()       -           code_begin();       }

   130   int data_size() const                          { return           data_end()       -           data_begin();       }

   132   // Containment

   133   bool blob_contains(address addr) const         { return header_begin()       <= addr && addr < data_end();       }

   134   bool relocation_contains(relocInfo* addr) const{ return relocation_begin()   <= addr && addr < relocation_end(); }

   135   bool content_contains(address addr) const      { return content_begin()      <= addr && addr < content_end();    }

   136   bool code_contains(address addr) const         { return code_begin()         <= addr && addr < code_end();       }

   137   bool data_contains(address addr) const         { return data_begin()         <= addr && addr < data_end();       }

   138   bool contains(address addr) const              { return content_contains(addr); }

   139   bool is_frame_complete_at(address addr) const  { return code_contains(addr) &&

   140                                                           addr >= code_begin() + _frame_complete_offset; }

   142   // CodeCache support: really only used by the nmethods, but in order to get

   143   // asserts and certain bookkeeping to work in the CodeCache they are defined

   144   // virtual here.

   145   virtual bool is_zombie() const                 { return false; }

   146   virtual bool is_locked_by_vm() const           { return false; }

   148   virtual bool is_unloaded() const               { return false; }

   149   virtual bool is_not_entrant() const            { return false; }

   151   // GC support

   152   virtual bool is_alive() const                  = 0;

   154   // OopMap for frame

   155   OopMapSet* oop_maps() const                    { return _oop_maps; }

   156   void set_oop_maps(OopMapSet* p);

   157   OopMap* oop_map_for_return_address(address return_address);

   158   virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { ShouldNotReachHere(); }

   160   // Frame support

   161   int  frame_size() const                        { return _frame_size; }

   162   void set_frame_size(int size)                  { _frame_size = size; }

   164   // Returns true, if the next frame is responsible for GC'ing oops passed as arguments

   165   virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; }

   167   // Naming

   168   const char* name() const                       { return _name; }

   169   void set_name(const char* name)                { _name = name; }

   171   // Debugging

   172   virtual void verify();

   173   void print() const                             { print_on(tty); }

   174   virtual void print_on(outputStream* st) const;

   175   virtual void print_value_on(outputStream* st) const;

   177   // Print the comment associated with offset on stream, if there is one

   178   virtual void print_block_comment(outputStream* stream, address block_begin) {

   179     intptr_t offset = (intptr_t)(block_begin - code_begin());

   180     _comments.print_block_comment(stream, offset);

   181   }

   183   // Transfer ownership of comments to this CodeBlob

   184   void set_comments(CodeComments& comments) {

   185     _comments.assign(comments);

   186   }

   187 };

   190 //----------------------------------------------------------------------------------------------------

   191 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc.

   193 class BufferBlob: public CodeBlob {

   194   friend class VMStructs;

   195   friend class AdapterBlob;

   196   friend class MethodHandlesAdapterBlob;

   198  private:

   199   // Creation support

   200   BufferBlob(const char* name, int size);

   201   BufferBlob(const char* name, int size, CodeBuffer* cb);

   203   void* operator new(size_t s, unsigned size);

   205  public:

   206   // Creation

   207   static BufferBlob* create(const char* name, int buffer_size);

   208   static BufferBlob* create(const char* name, CodeBuffer* cb);

   210   static void free(BufferBlob* buf);

   212   // Typing

   213   virtual bool is_buffer_blob() const            { return true; }

   215   // GC/Verification support

   216   void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }

   217   bool is_alive() const                          { return true; }

   219   void verify();

   220   void print_on(outputStream* st) const;

   221   void print_value_on(outputStream* st) const;

   222 };

   225 //----------------------------------------------------------------------------------------------------

   226 // AdapterBlob: used to hold C2I/I2C adapters

   228 class AdapterBlob: public BufferBlob {

   229 private:

   230   AdapterBlob(int size, CodeBuffer* cb);

   232 public:

   233   // Creation

   234   static AdapterBlob* create(CodeBuffer* cb);

   236   // Typing

   237   virtual bool is_adapter_blob() const { return true; }

   238 };

   241 //----------------------------------------------------------------------------------------------------

   242 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters

   244 class MethodHandlesAdapterBlob: public BufferBlob {

   245 private:

   246   MethodHandlesAdapterBlob(int size)                 : BufferBlob("MethodHandles adapters", size) {}

   247   MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {}

   249 public:

   250   // Creation

   251   static MethodHandlesAdapterBlob* create(int buffer_size);

   253   // Typing

   254   virtual bool is_method_handles_adapter_blob() const { return true; }

   255 };

   258 //----------------------------------------------------------------------------------------------------

   259 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine

   261 class RuntimeStub: public CodeBlob {

   262   friend class VMStructs;

   263  private:

   264   bool        _caller_must_gc_arguments;

   266   // Creation support

   267   RuntimeStub(

   268     const char* name,

   269     CodeBuffer* cb,

   270     int         size,

   271     int         frame_complete,

   272     int         frame_size,

   273     OopMapSet*  oop_maps,

   274     bool        caller_must_gc_arguments

   275   );

   277   void* operator new(size_t s, unsigned size);

   279  public:

   280   // Creation

   281   static RuntimeStub* new_runtime_stub(

   282     const char* stub_name,

   283     CodeBuffer* cb,

   284     int         frame_complete,

   285     int         frame_size,

   286     OopMapSet*  oop_maps,

   287     bool        caller_must_gc_arguments

   288   );

   290   // Typing

   291   bool is_runtime_stub() const                   { return true; }

   293   // GC support

   294   bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; }

   296   address entry_point()                          { return code_begin(); }

   298   // GC/Verification support

   299   void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f)  { /* nothing to do */ }

   300   bool is_alive() const                          { return true; }

   302   void verify();

   303   void print_on(outputStream* st) const;

   304   void print_value_on(outputStream* st) const;

   305 };

   308 //----------------------------------------------------------------------------------------------------

   309 // Super-class for all blobs that exist in only one instance. Implements default behaviour.

   311 class SingletonBlob: public CodeBlob {

   312   friend class VMStructs;

   313   public:

   314    SingletonBlob(

   315      const char* name,

   316      CodeBuffer* cb,

   317      int         header_size,

   318      int         size,

   319      int         frame_size,

   320      OopMapSet*  oop_maps

   321    )

   322    : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps)

   323   {};

   325   address entry_point()                          { return code_begin(); }

   327   bool is_alive() const                          { return true; }

   329   void verify(); // does nothing

   330   void print_on(outputStream* st) const;

   331   void print_value_on(outputStream* st) const;

   332 };

   335 //----------------------------------------------------------------------------------------------------

   336 // DeoptimizationBlob

   338 class DeoptimizationBlob: public SingletonBlob {

   339   friend class VMStructs;

   340  private:

   341   int _unpack_offset;

   342   int _unpack_with_exception;

   343   int _unpack_with_reexecution;

   345   int _unpack_with_exception_in_tls;

   347   // Creation support

   348   DeoptimizationBlob(

   349     CodeBuffer* cb,

   350     int         size,

   351     OopMapSet*  oop_maps,

   352     int         unpack_offset,

   353     int         unpack_with_exception_offset,

   354     int         unpack_with_reexecution_offset,

   355     int         frame_size

   356   );

   358   void* operator new(size_t s, unsigned size);

   360  public:

   361   // Creation

   362   static DeoptimizationBlob* create(

   363     CodeBuffer* cb,

   364     OopMapSet*  oop_maps,

   365     int         unpack_offset,

   366     int         unpack_with_exception_offset,

   367     int         unpack_with_reexecution_offset,

   368     int         frame_size

   369   );

   371   // Typing

   372   bool is_deoptimization_stub() const { return true; }

   373   const DeoptimizationBlob *as_deoptimization_stub() const { return this; }

   374   bool exception_address_is_unpack_entry(address pc) const {

   375     address unpack_pc = unpack();

   376     return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc);

   377   }

   382   // GC for args

   383   void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ }

   385   // Printing

   386   void print_value_on(outputStream* st) const;

   388   address unpack() const                         { return code_begin() + _unpack_offset;           }

   389   address unpack_with_exception() const          { return code_begin() + _unpack_with_exception;   }

   390   address unpack_with_reexecution() const        { return code_begin() + _unpack_with_reexecution; }

   392   // Alternate entry point for C1 where the exception and issuing pc

   393   // are in JavaThread::_exception_oop and JavaThread::_exception_pc

   394   // instead of being in registers.  This is needed because C1 doesn't

   395   // model exception paths in a way that keeps these registers free so

   396   // there may be live values in those registers during deopt.

   397   void set_unpack_with_exception_in_tls_offset(int offset) {

   398     _unpack_with_exception_in_tls = offset;

   399     assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob");

   400   }

   401   address unpack_with_exception_in_tls() const   { return code_begin() + _unpack_with_exception_in_tls; }

   402 };

   405 //----------------------------------------------------------------------------------------------------

   406 // UncommonTrapBlob (currently only used by Compiler 2)

   408 #ifdef COMPILER2

   410 class UncommonTrapBlob: public SingletonBlob {

   411   friend class VMStructs;

   412  private:

   413   // Creation support

   414   UncommonTrapBlob(

   415     CodeBuffer* cb,

   416     int         size,

   417     OopMapSet*  oop_maps,

   418     int         frame_size

   419   );

   421   void* operator new(size_t s, unsigned size);

   423  public:

   424   // Creation

   425   static UncommonTrapBlob* create(

   426     CodeBuffer* cb,

   427     OopMapSet*  oop_maps,

   428     int         frame_size

   429   );

   431   // GC for args

   432   void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f)  { /* nothing to do */ }

   434   // Typing

   435   bool is_uncommon_trap_stub() const             { return true; }

   436 };

   439 //----------------------------------------------------------------------------------------------------

   440 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2)

   442 class ExceptionBlob: public SingletonBlob {

   443   friend class VMStructs;

   444  private:

   445   // Creation support

   446   ExceptionBlob(

   447     CodeBuffer* cb,

   448     int         size,

   449     OopMapSet*  oop_maps,

   450     int         frame_size

   451   );

   453   void* operator new(size_t s, unsigned size);

   455  public:

   456   // Creation

   457   static ExceptionBlob* create(

   458     CodeBuffer* cb,

   459     OopMapSet*  oop_maps,

   460     int         frame_size

   461   );

   463   // GC for args

   464   void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }

   466   // Typing

   467   bool is_exception_stub() const                 { return true; }

   468 };

   469 #endif // COMPILER2

   472 //----------------------------------------------------------------------------------------------------

   473 // SafepointBlob: handles illegal_instruction exceptions during a safepoint

   475 class SafepointBlob: public SingletonBlob {

   476   friend class VMStructs;

   477  private:

   478   // Creation support

   479   SafepointBlob(

   480     CodeBuffer* cb,

   481     int         size,

   482     OopMapSet*  oop_maps,

   483     int         frame_size

   484   );

   486   void* operator new(size_t s, unsigned size);

   488  public:

   489   // Creation

   490   static SafepointBlob* create(

   491     CodeBuffer* cb,

   492     OopMapSet*  oop_maps,

   493     int         frame_size

   494   );

   496   // GC for args

   497   void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f)  { /* nothing to do */ }

   499   // Typing

   500   bool is_safepoint_stub() const                 { return true; }

   501 };

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

src/share/vm/code/codeBlob.hpp@3e8fbc61cee8

src/share/vm/code/codeBlob.hpp