jdk8-mips64-public/hotspot: src/share/vm/code/codeBlob.hpp@a248d0be1309

8229401: Fix JFR code cache test failures
8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

     1 /*

     2  * Copyright (c) 1998, 2018, 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 #ifndef SHARE_VM_CODE_CODEBLOB_HPP

    26 #define SHARE_VM_CODE_CODEBLOB_HPP

    28 #include "asm/codeBuffer.hpp"

    29 #include "compiler/oopMap.hpp"

    30 #include "runtime/frame.hpp"

    31 #include "runtime/handles.hpp"

    33 // CodeBlob Types

    34 // Used in the CodeCache to assign CodeBlobs to different CodeHeaps

    35 struct CodeBlobType {

    36   enum {

    37     All                 = 0,    // All types (No code cache segmentation)

    38     NumTypes            = 1     // Number of CodeBlobTypes

    39   };

    40 };

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

    43 //

    44 // Suptypes are:

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

    46 //   RuntimeStub        : Call to VM runtime methods

    47 //   DeoptimizationBlob : Used for deoptimizatation

    48 //   ExceptionBlob      : Used for stack unrolling

    49 //   SafepointBlob      : Used to handle illegal instruction exceptions

    50 //

    51 //

    52 // Layout:

    53 //   - header

    54 //   - relocation

    55 //   - content space

    56 //     - instruction space

    57 //   - data space

    58 class DeoptimizationBlob;

    60 class CodeBlob VALUE_OBJ_CLASS_SPEC {

    62   friend class VMStructs;

    64  private:

    65   const char* _name;

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

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

    68   int        _relocation_size;                   // size of relocation

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

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

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

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

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

    74                                                  // which we don't detect.

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

    76   int        _frame_size;                        // size of stack frame

    77   OopMapSet* _oop_maps;                          // OopMap for this CodeBlob

    78   CodeStrings _strings;

    80  public:

    81   // Returns the space needed for CodeBlob

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

    83   static unsigned int align_code_offset(int offset);

    85   // Creation

    86   // a) simple CodeBlob

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

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

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

    91   // b) full CodeBlob

    92   CodeBlob(

    93     const char* name,

    94     CodeBuffer* cb,

    95     int         header_size,

    96     int         size,

    97     int         frame_complete,

    98     int         frame_size,

    99     OopMapSet*  oop_maps

   100   );

   102   // Deletion

   103   void flush();

   105   // Typing

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

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

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

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

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

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

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

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

   114   virtual bool is_vtable_blob() const                 { return false; }

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

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

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

   120   // Casting

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

   123   // Boundaries

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

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

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

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

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

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

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

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

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

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

   135   // Offsets

   136   int relocation_offset() const                  { return _header_size; }

   137   int content_offset() const                     { return _content_offset; }

   138   int code_offset() const                        { return _code_offset; }

   139   int data_offset() const                        { return _data_offset; }

   141   // Sizes

   142   int size() const                               { return _size; }

   143   int header_size() const                        { return _header_size; }

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

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

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

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

   149   // Containment

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

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

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

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

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

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

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

   157                                                           addr >= code_begin() + _frame_complete_offset; }

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

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

   161   // virtual here.

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

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

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

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

   168   // GC support

   169   virtual bool is_alive() const                  = 0;

   171   // OopMap for frame

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

   173   void set_oop_maps(OopMapSet* p);

   174   OopMap* oop_map_for_return_address(address return_address);

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

   177   // Frame support

   178   int  frame_size() const                        { return _frame_size; }

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

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

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

   184   // Naming

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

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

   188   // Debugging

   189   virtual void verify();

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

   191   virtual void print_on(outputStream* st) const;

   192   virtual void print_value_on(outputStream* st) const;

   194   // Deal with Disassembler, VTune, Forte, JvmtiExport, MemoryService.

   195   static void trace_new_stub(CodeBlob* blob, const char* name1, const char* name2 = "");

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

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

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

   200     _strings.print_block_comment(stream, offset);

   201   }

   203   // Transfer ownership of comments to this CodeBlob

   204   void set_strings(CodeStrings& strings) {

   205     _strings.assign(strings);

   206   }

   207 };

   210 //----------------------------------------------------------------------------------------------------

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

   213 class BufferBlob: public CodeBlob {

   214   friend class VMStructs;

   215   friend class AdapterBlob;

   216   friend class VtableBlob;

   217   friend class MethodHandlesAdapterBlob;

   218   friend class WhiteBox;

   220  private:

   221   // Creation support

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

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

   225   void* operator new(size_t s, unsigned size, bool is_critical = false) throw();

   227  public:

   228   // Creation

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

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

   232   static void free(BufferBlob* buf);

   234   // Typing

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

   237   // GC/Verification support

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

   239   bool is_alive() const                          { return true; }

   241   void verify();

   242   void print_on(outputStream* st) const;

   243   void print_value_on(outputStream* st) const;

   244 };

   247 //----------------------------------------------------------------------------------------------------

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

   250 class AdapterBlob: public BufferBlob {

   251 private:

   252   AdapterBlob(int size, CodeBuffer* cb);

   254 public:

   255   // Creation

   256   static AdapterBlob* create(CodeBuffer* cb);

   258   // Typing

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

   260 };

   262 //---------------------------------------------------------------------------------------------------

   263 class VtableBlob: public BufferBlob {

   264 private:

   265   VtableBlob(const char*, int);

   267 public:

   268   // Creation

   269   static VtableBlob* create(const char* name, int buffer_size);

   271   // Typing

   272   virtual bool is_vtable_blob() const { return true; }

   273 };

   275 //----------------------------------------------------------------------------------------------------

   276 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters

   278 class MethodHandlesAdapterBlob: public BufferBlob {

   279 private:

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

   282 public:

   283   // Creation

   284   static MethodHandlesAdapterBlob* create(int buffer_size);

   286   // Typing

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

   288 };

   291 //----------------------------------------------------------------------------------------------------

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

   294 class RuntimeStub: public CodeBlob {

   295   friend class VMStructs;

   296  private:

   297   bool        _caller_must_gc_arguments;

   299   // Creation support

   300   RuntimeStub(

   301     const char* name,

   302     CodeBuffer* cb,

   303     int         size,

   304     int         frame_complete,

   305     int         frame_size,

   306     OopMapSet*  oop_maps,

   307     bool        caller_must_gc_arguments

   308   );

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

   312  public:

   313   // Creation

   314   static RuntimeStub* new_runtime_stub(

   315     const char* stub_name,

   316     CodeBuffer* cb,

   317     int         frame_complete,

   318     int         frame_size,

   319     OopMapSet*  oop_maps,

   320     bool        caller_must_gc_arguments

   321   );

   323   // Typing

   324   bool is_runtime_stub() const                   { return true; }

   326   // GC support

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

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

   331   // GC/Verification support

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

   333   bool is_alive() const                          { return true; }

   335   void verify();

   336   void print_on(outputStream* st) const;

   337   void print_value_on(outputStream* st) const;

   338 };

   341 //----------------------------------------------------------------------------------------------------

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

   344 class SingletonBlob: public CodeBlob {

   345   friend class VMStructs;

   347  protected:

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

   350  public:

   351    SingletonBlob(

   352      const char* name,

   353      CodeBuffer* cb,

   354      int         header_size,

   355      int         size,

   356      int         frame_size,

   357      OopMapSet*  oop_maps

   358    )

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

   360   {};

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

   364   bool is_alive() const                          { return true; }

   366   void verify(); // does nothing

   367   void print_on(outputStream* st) const;

   368   void print_value_on(outputStream* st) const;

   369 };

   372 //----------------------------------------------------------------------------------------------------

   373 // DeoptimizationBlob

   375 class DeoptimizationBlob: public SingletonBlob {

   376   friend class VMStructs;

   377  private:

   378   int _unpack_offset;

   379   int _unpack_with_exception;

   380   int _unpack_with_reexecution;

   382   int _unpack_with_exception_in_tls;

   384   // Creation support

   385   DeoptimizationBlob(

   386     CodeBuffer* cb,

   387     int         size,

   388     OopMapSet*  oop_maps,

   389     int         unpack_offset,

   390     int         unpack_with_exception_offset,

   391     int         unpack_with_reexecution_offset,

   392     int         frame_size

   393   );

   395  public:

   396   // Creation

   397   static DeoptimizationBlob* create(

   398     CodeBuffer* cb,

   399     OopMapSet*  oop_maps,

   400     int         unpack_offset,

   401     int         unpack_with_exception_offset,

   402     int         unpack_with_reexecution_offset,

   403     int         frame_size

   404   );

   406   // Typing

   407   bool is_deoptimization_stub() const { return true; }

   408   bool exception_address_is_unpack_entry(address pc) const {

   409     address unpack_pc = unpack();

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

   411   }

   416   // GC for args

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

   419   // Printing

   420   void print_value_on(outputStream* st) const;

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

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

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

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

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

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

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

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

   431   void set_unpack_with_exception_in_tls_offset(int offset) {

   432     _unpack_with_exception_in_tls = offset;

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

   434   }

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

   436 };

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

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

   442 #ifdef COMPILER2

   444 class UncommonTrapBlob: public SingletonBlob {

   445   friend class VMStructs;

   446  private:

   447   // Creation support

   448   UncommonTrapBlob(

   449     CodeBuffer* cb,

   450     int         size,

   451     OopMapSet*  oop_maps,

   452     int         frame_size

   453   );

   455  public:

   456   // Creation

   457   static UncommonTrapBlob* 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_uncommon_trap_stub() const             { return true; }

   468 };

   471 //----------------------------------------------------------------------------------------------------

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

   474 class ExceptionBlob: public SingletonBlob {

   475   friend class VMStructs;

   476  private:

   477   // Creation support

   478   ExceptionBlob(

   479     CodeBuffer* cb,

   480     int         size,

   481     OopMapSet*  oop_maps,

   482     int         frame_size

   483   );

   485  public:

   486   // Creation

   487   static ExceptionBlob* create(

   488     CodeBuffer* cb,

   489     OopMapSet*  oop_maps,

   490     int         frame_size

   491   );

   493   // GC for args

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

   496   // Typing

   497   bool is_exception_stub() const                 { return true; }

   498 };

   499 #endif // COMPILER2

   502 //----------------------------------------------------------------------------------------------------

   503 // SafepointBlob: handles illegal_instruction exceptions during a safepoint

   505 class SafepointBlob: public SingletonBlob {

   506   friend class VMStructs;

   507  private:

   508   // Creation support

   509   SafepointBlob(

   510     CodeBuffer* cb,

   511     int         size,

   512     OopMapSet*  oop_maps,

   513     int         frame_size

   514   );

   516  public:

   517   // Creation

   518   static SafepointBlob* create(

   519     CodeBuffer* cb,

   520     OopMapSet*  oop_maps,

   521     int         frame_size

   522   );

   524   // GC for args

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

   527   // Typing

   528   bool is_safepoint_stub() const                 { return true; }

   529 };

   531 #endif // SHARE_VM_CODE_CODEBLOB_HPP

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

src/share/vm/code/codeBlob.hpp@a248d0be1309

src/share/vm/code/codeBlob.hpp