aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_RUNTIME_VFRAME_HP_HPP
aoqi@0: #define SHARE_VM_RUNTIME_VFRAME_HP_HPP
aoqi@0: 
aoqi@0: #include "runtime/vframe.hpp"
aoqi@0: 
aoqi@0: class compiledVFrame: public javaVFrame {
aoqi@0:  public:
aoqi@0:   // JVM state
aoqi@0:   Method*                      method()             const;
aoqi@0:   int                          bci()                const;
aoqi@0:   bool                         should_reexecute()   const;
aoqi@0:   StackValueCollection*        locals()             const;
aoqi@0:   StackValueCollection*        expressions()        const;
aoqi@0:   GrowableArray<MonitorInfo*>* monitors()           const;
aoqi@0: 
aoqi@0:   void set_locals(StackValueCollection* values) const;
aoqi@0: 
aoqi@0:   // Virtuals defined in vframe
aoqi@0:   bool is_compiled_frame() const { return true; }
aoqi@0:   vframe* sender() const;
aoqi@0:   bool is_top() const;
aoqi@0: 
aoqi@0:   // Casting
aoqi@0:   static compiledVFrame* cast(vframe* vf) {
aoqi@0:     assert(vf == NULL || vf->is_compiled_frame(), "must be compiled frame");
aoqi@0:     return (compiledVFrame*) vf;
aoqi@0:   }
aoqi@0: 
aoqi@0:  public:
aoqi@0:   // Constructors
aoqi@0:   compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, nmethod* nm);
aoqi@0: 
aoqi@0:   // Update a local in a compiled frame. Update happens when deopt occurs
aoqi@0:   void update_local(BasicType type, int index, jvalue value);
aoqi@0: 
aoqi@0:   // Returns the active nmethod
aoqi@0:   nmethod*  code() const;
aoqi@0: 
aoqi@0:   // Returns the scopeDesc
aoqi@0:   ScopeDesc* scope() const { return _scope; }
aoqi@0: 
aoqi@0:   // Returns SynchronizationEntryBCI or bci() (used for synchronization)
aoqi@0:   int raw_bci() const;
aoqi@0: 
aoqi@0:  protected:
aoqi@0:   ScopeDesc* _scope;
aoqi@0: 
aoqi@0: 
aoqi@0:   //StackValue resolve(ScopeValue* sv) const;
aoqi@0:   BasicLock* resolve_monitor_lock(Location location) const;
aoqi@0:   StackValue *create_stack_value(ScopeValue *sv) const;
aoqi@0: 
aoqi@0:  private:
aoqi@0:   compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope);
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0:  public:
aoqi@0:   void verify() const;
aoqi@0: #endif
aoqi@0: };
aoqi@0: 
aoqi@0: // In order to implement set_locals for compiled vframes we must
aoqi@0: // store updated locals in a data structure that contains enough
aoqi@0: // information to recognize equality with a vframe and to store
aoqi@0: // any updated locals.
aoqi@0: 
aoqi@0: class jvmtiDeferredLocalVariable;
aoqi@0: class jvmtiDeferredLocalVariableSet : public CHeapObj<mtCompiler> {
aoqi@0: private:
aoqi@0: 
aoqi@0:   Method* _method;
aoqi@0:   int       _bci;
aoqi@0:   intptr_t* _id;
aoqi@0:   GrowableArray<jvmtiDeferredLocalVariable*>* _locals;
aoqi@0: 
aoqi@0:  public:
aoqi@0:   // JVM state
aoqi@0:   Method*                           method()         const  { return _method; }
aoqi@0:   int                               bci()            const  { return _bci; }
aoqi@0:   intptr_t*                         id()             const  { return _id; }
aoqi@0:   GrowableArray<jvmtiDeferredLocalVariable*>* locals()         const  { return _locals; }
aoqi@0:   void                              set_local_at(int idx, BasicType typ, jvalue val);
aoqi@0: 
aoqi@0:   // Does the vframe match this jvmtiDeferredLocalVariableSet
aoqi@0:   bool                              matches(vframe* vf);
aoqi@0:   // GC
aoqi@0:   void                              oops_do(OopClosure* f);
aoqi@0: 
aoqi@0:   // constructor
aoqi@0:   jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id);
aoqi@0: 
aoqi@0:   // destructor
aoqi@0:   ~jvmtiDeferredLocalVariableSet();
aoqi@0: 
aoqi@0: 
aoqi@0: };
aoqi@0: 
aoqi@0: class jvmtiDeferredLocalVariable : public CHeapObj<mtCompiler> {
aoqi@0:   public:
aoqi@0: 
aoqi@0:     jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value);
aoqi@0: 
aoqi@0:     BasicType type(void)                   { return _type; }
aoqi@0:     int index(void)                        { return _index; }
aoqi@0:     jvalue value(void)                     { return _value; }
aoqi@0:     // Only mutator is for value as only it can change
aoqi@0:     void set_value(jvalue value)           { _value = value; }
aoqi@0:     // For gc
aoqi@0:     oop* oop_addr(void)                    { return (oop*) &_value.l; }
aoqi@0: 
aoqi@0:   private:
aoqi@0: 
aoqi@0:     BasicType         _type;
aoqi@0:     jvalue            _value;
aoqi@0:     int               _index;
aoqi@0: 
aoqi@0: };
aoqi@0: 
aoqi@0: #endif // SHARE_VM_RUNTIME_VFRAME_HP_HPP