jdk8-mips64-public/hotspot: src/share/vm/runtime/vframe

6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
Summary: developed a reexecute logic for the interpreter to reexecute the bytecode when deopt happens
Reviewed-by: kvn, never, jrose, twisti

     1 /*

     2  * Copyright 1997-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 class compiledVFrame: public javaVFrame {

    26  public:

    27   // JVM state

    28   methodOop                    method()             const;

    29   int                          bci()                const;

    30   bool                         should_reexecute()   const;

    31   StackValueCollection*        locals()             const;

    32   StackValueCollection*        expressions()        const;

    33   GrowableArray<MonitorInfo*>* monitors()           const;

    35   void set_locals(StackValueCollection* values) const;

    37   // Virtuals defined in vframe

    38   bool is_compiled_frame() const { return true; }

    39   vframe* sender() const;

    40   bool is_top() const;

    42   // Casting

    43   static compiledVFrame* cast(vframe* vf) {

    44     assert(vf == NULL || vf->is_compiled_frame(), "must be compiled frame");

    45     return (compiledVFrame*) vf;

    46   }

    48  public:

    49   // Constructors

    50   compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, nmethod* nm);

    52   // Update a local in a compiled frame. Update happens when deopt occurs

    53   void update_local(BasicType type, int index, jvalue value);

    55   // Returns the active nmethod

    56   nmethod*  code() const;

    58   // Returns the scopeDesc

    59   ScopeDesc* scope() const { return _scope; }

    61   // Returns SynchronizationEntryBCI or bci() (used for synchronization)

    62   int raw_bci() const;

    64  protected:

    65   ScopeDesc* _scope;

    68   //StackValue resolve(ScopeValue* sv) const;

    69   BasicLock* resolve_monitor_lock(Location location) const;

    70   StackValue *create_stack_value(ScopeValue *sv) const;

    72  private:

    73   compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope);

    75 #ifndef PRODUCT

    76  public:

    77   void verify() const;

    78 #endif

    79 };

    81 // In order to implement set_locals for compiled vframes we must

    82 // store updated locals in a data structure that contains enough

    83 // information to recognize equality with a vframe and to store

    84 // any updated locals.

    86 class jvmtiDeferredLocalVariable;

    87 class jvmtiDeferredLocalVariableSet : public CHeapObj {

    88 private:

    90   methodOop _method;           // must be GC'd

    91   int       _bci;

    92   intptr_t* _id;

    93   GrowableArray<jvmtiDeferredLocalVariable*>* _locals;

    95  public:

    96   // JVM state

    97   methodOop                         method()         const  { return _method; }

    98   int                               bci()            const  { return _bci; }

    99   intptr_t*                         id()             const  { return _id; }

   100   GrowableArray<jvmtiDeferredLocalVariable*>* locals()         const  { return _locals; }

   101   void                              set_local_at(int idx, BasicType typ, jvalue val);

   103   // Does the vframe match this jvmtiDeferredLocalVariableSet

   104   bool                              matches(vframe* vf);

   105   // GC

   106   void                              oops_do(OopClosure* f);

   108   // constructor

   109   jvmtiDeferredLocalVariableSet(methodOop method, int bci, intptr_t* id);

   111   // destructor

   112   ~jvmtiDeferredLocalVariableSet();

   115 };

   117 class jvmtiDeferredLocalVariable : public CHeapObj {

   118   public:

   120     jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value);

   122     BasicType type(void)                   { return _type; }

   123     int index(void)                        { return _index; }

   124     jvalue value(void)                     { return _value; }

   125     // Only mutator is for value as only it can change

   126     void set_value(jvalue value)           { _value = value; }

   127     // For gc

   128     oop* oop_addr(void)                    { return (oop*) &_value.l; }

   130   private:

   132     BasicType         _type;

   133     jvalue            _value;

   134     int               _index;

   136 };

src/share/vm/runtime/vframe_hp.hpp@9987d9d5eb0e

src/share/vm/runtime/vframe_hp.hpp

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

src/share/vm/runtime/vframe_hp.hpp@9987d9d5eb0e

src/share/vm/runtime/vframe_hp.hpp