[Isolates] Merge crankshaft (r5922 from bleeding_edge).

src/frames.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_FRAMES_H_
 #define V8_FRAMES_H_
 
+#include "handles.h"
+
 namespace v8 {
 namespace internal {
 
 typedef uint32_t RegList;
 
 // Get the number of registers in a given register list.
 int NumRegs(RegList list);
 
 // Return the code of the n-th saved register available to JavaScript.
 int JSCallerSavedCode(int n);
 
 
 // Forward declarations.
 class StackFrameIterator;
 class ThreadLocalTop;
 class Isolate;
 
 class PcToCodeCache {
  public:
   struct PcToCodeCacheEntry {
     Address pc;
     Code* code;
+    uint8_t* safepoint_entry;
   };
 
-  explicit PcToCodeCache(Isolate* isolate) : isolate_(isolate) {}
+  explicit PcToCodeCache(Isolate* isolate) : isolate_(isolate) {
+    Flush();
+  }
 
   Code* GcSafeFindCodeForPc(Address pc);
   Code* GcSafeCastToCode(HeapObject* object, Address pc);
 
   void Flush() {
     memset(&cache_[0], 0, sizeof(cache_));
   }
 
   PcToCodeCacheEntry* GetCacheEntry(Address pc);
 
@@ skipping 45 matching lines @@
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(StackHandler);
 };
 
 
 #define STACK_FRAME_TYPE_LIST(V)              \
   V(ENTRY,             EntryFrame)            \
   V(ENTRY_CONSTRUCT,   EntryConstructFrame)   \
   V(EXIT,              ExitFrame)             \
   V(JAVA_SCRIPT,       JavaScriptFrame)       \
+  V(OPTIMIZED,         OptimizedFrame)        \
   V(INTERNAL,          InternalFrame)         \
   V(CONSTRUCT,         ConstructFrame)        \
   V(ARGUMENTS_ADAPTOR, ArgumentsAdaptorFrame)
 
 
 // Abstract base class for all stack frames.
 class StackFrame BASE_EMBEDDED {
  public:
 #define DECLARE_TYPE(type, ignore) type,
   enum Type {
@@ skipping 23 matching lines @@
   // Copy constructor; it breaks the connection to host iterator.
   StackFrame(const StackFrame& original) {
     this->state_ = original.state_;
     this->iterator_ = NULL;
   }
 
   // Type testers.
   bool is_entry() const { return type() == ENTRY; }
   bool is_entry_construct() const { return type() == ENTRY_CONSTRUCT; }
   bool is_exit() const { return type() == EXIT; }
-  bool is_java_script() const { return type() == JAVA_SCRIPT; }
+  bool is_optimized() const { return type() == OPTIMIZED; }
   bool is_arguments_adaptor() const { return type() == ARGUMENTS_ADAPTOR; }
   bool is_internal() const { return type() == INTERNAL; }
   bool is_construct() const { return type() == CONSTRUCT; }
   virtual bool is_standard() const { return false; }
 
+  bool is_java_script() const {
+    Type type = this->type();
+    return (type == JAVA_SCRIPT) || (type == OPTIMIZED);
+  }
+
   // Accessors.
   Address sp() const { return state_.sp; }
   Address fp() const { return state_.fp; }
   Address caller_sp() const { return GetCallerStackPointer(); }
 
   Address pc() const { return *pc_address(); }
   void set_pc(Address pc) { *pc_address() = pc; }
 
   virtual void SetCallerFp(Address caller_fp) = 0;
 
@@ skipping 13 matching lines @@
   virtual Code* unchecked_code() const = 0;
 
   // Get the code associated with this frame.
   Code* LookupCode(Isolate* isolate) const {
     return GetContainingCode(isolate, pc());
   }
 
   // Get the code object that contains the given pc.
   static inline Code* GetContainingCode(Isolate* isolate, Address pc);
 
+  // Get the code object containing the given pc and fill in the
+  // safepoint entry and the number of stack slots. The pc must be at
+  // a safepoint.
+  static Code* GetSafepointData(Address pc,
+                                uint8_t** safepoint_entry,
+                                unsigned* stack_slots);
+
   virtual void Iterate(ObjectVisitor* v) const = 0;
   static void IteratePc(ObjectVisitor* v, Address* pc_address, Code* holder);
 
 
   // Printing support.
   enum PrintMode { OVERVIEW, DETAILS };
   virtual void Print(StringStream* accumulator,
                      PrintMode mode,
                      int index) const { }
 
@@ skipping 176 matching lines @@
   // Determines if the standard frame for the given frame pointer is a
   // construct frame.
   static inline bool IsConstructFrame(Address fp);
 
  private:
   friend class StackFrame;
   friend class StackFrameIterator;
 };
 
 
+class FrameSummary BASE_EMBEDDED {
+ public:
+  FrameSummary(Object* receiver,
+               JSFunction* function,
+               Code* code,
+               int offset,
+               bool is_constructor)
+      : receiver_(receiver),
+        function_(function),
+        code_(code),
+        offset_(offset),
+        is_constructor_(is_constructor) { }
+  Handle<Object> receiver() { return receiver_; }
+  Handle<JSFunction> function() { return function_; }
+  Handle<Code> code() { return code_; }
+  Address pc() { return reinterpret_cast<Address>(*code_) + offset_; }
+  int offset() { return offset_; }
+  bool is_constructor() { return is_constructor_; }
+
+  void Print();
+
+ private:
+  Handle<Object> receiver_;
+  Handle<JSFunction> function_;
+  Handle<Code> code_;
+  int offset_;
+  bool is_constructor_;
+};
+
+
 class JavaScriptFrame: public StandardFrame {
  public:
   virtual Type type() const { return JAVA_SCRIPT; }
 
   // Accessors.
   inline Object* function() const;
   inline Object* receiver() const;
   inline void set_receiver(Object* value);
 
   // Access the parameters.
@@ skipping 18 matching lines @@
   virtual void Iterate(ObjectVisitor* v) const;
 
   // Printing support.
   virtual void Print(StringStream* accumulator,
                      PrintMode mode,
                      int index) const;
 
   // Determine the code for the frame.
   virtual Code* unchecked_code() const;
 
+  // Return a list with JSFunctions of this frame.
+  virtual void GetFunctions(List<JSFunction*>* functions);
+
+  // Build a list with summaries for this frame including all inlined frames.
+  virtual void Summarize(List<FrameSummary>* frames);
+
   static JavaScriptFrame* cast(StackFrame* frame) {
     ASSERT(frame->is_java_script());
     return static_cast<JavaScriptFrame*>(frame);
   }
 
  protected:
   explicit JavaScriptFrame(StackFrameIterator* iterator)
       : StandardFrame(iterator) { }
 
   virtual Address GetCallerStackPointer() const;
 
+  // Garbage collection support. Iterates over incoming arguments,
+  // receiver, and any callee-saved registers.
+  void IterateArguments(ObjectVisitor* v) const;
+
  private:
   inline Object* function_slot_object() const;
 
   friend class StackFrameIterator;
   friend class StackTracer;
 };
 
 
+class OptimizedFrame : public JavaScriptFrame {
+ public:
+  virtual Type type() const { return OPTIMIZED; }
+
+  // GC support.
+  virtual void Iterate(ObjectVisitor* v) const;
+
+  // Return a list with JSFunctions of this frame.
+  // The functions are ordered bottom-to-top (i.e. functions.last()
+  // is the top-most activation)
+  virtual void GetFunctions(List<JSFunction*>* functions);
+
+  virtual void Summarize(List<FrameSummary>* frames);
+
+  DeoptimizationInputData* GetDeoptimizationData(int* deopt_index);
+
+ protected:
+  explicit OptimizedFrame(StackFrameIterator* iterator)
+      : JavaScriptFrame(iterator) { }
+
+ private:
+  friend class StackFrameIterator;
+};
+
+
 // Arguments adaptor frames are automatically inserted below
 // JavaScript frames when the actual number of parameters does not
 // match the formal number of parameters.
 class ArgumentsAdaptorFrame: public JavaScriptFrame {
  public:
   virtual Type type() const { return ARGUMENTS_ADAPTOR; }
 
   // Determine the code for the frame.
   virtual Code* unchecked_code() const;
 
@@ skipping 67 matching lines @@
  public:
   // An iterator that iterates over the current thread's stack.
   StackFrameIterator();
 
   // An iterator that iterates over a given thread's stack.
   explicit StackFrameIterator(ThreadLocalTop* thread);
 
   // An iterator that can start from a given FP address.
   // If use_top, then work as usual, if fp isn't NULL, use it,
   // otherwise, do nothing.
-  StackFrameIterator(bool use_top, Address fp, Address sp);
+  StackFrameIterator(Isolate* isolate, bool use_top, Address fp, Address sp);
 
   StackFrame* frame() const {
     ASSERT(!done());
     return frame_;
   }
 
   bool done() const { return frame_ == NULL; }
   void Advance() { (this->*advance_)(); }
 
   // Go back to the first frame.
@@ skipping 42 matching lines @@
 
   // Skip frames until the frame with the given id is reached.
   explicit JavaScriptFrameIteratorTemp(StackFrame::Id id);
 
   JavaScriptFrameIteratorTemp(Address fp, Address sp,
                               Address low_bound, Address high_bound) :
       iterator_(fp, sp, low_bound, high_bound) {
     if (!done()) Advance();
   }
 
+  JavaScriptFrameIteratorTemp(Isolate* isolate,
+                              Address fp, Address sp,
+                              Address low_bound, Address high_bound) :
+      iterator_(isolate, fp, sp, low_bound, high_bound) {
+    if (!done()) Advance();
+  }
+
   inline JavaScriptFrame* frame() const;
 
   bool done() const { return iterator_.done(); }
   void Advance();
 
   // Advance to the frame holding the arguments for the current
   // frame. This only affects the current frame if it has adapted
   // arguments.
   void AdvanceToArgumentsFrame();
 
@@ skipping 17 matching lines @@
   StackTraceFrameIterator();
   void Advance();
 
  private:
   bool IsValidFrame();
 };
 
 
 class SafeStackFrameIterator BASE_EMBEDDED {
  public:
-  SafeStackFrameIterator(Address fp, Address sp,
+  SafeStackFrameIterator(Isolate* isolate,
+                         Address fp, Address sp,
                          Address low_bound, Address high_bound);
 
   StackFrame* frame() const {
     ASSERT(is_working_iterator_);
     return iterator_.frame();
   }
 
   bool done() const { return iteration_done_ ? true : iterator_.done(); }
 
   void Advance();
@@ skipping 29 matching lines @@
    private:
     StackAddressValidator validator_;
   };
 
   bool IsValidStackAddress(Address addr) const {
     return stack_validator_.IsValid(addr);
   }
   bool CanIterateHandles(StackFrame* frame, StackHandler* handler);
   bool IsValidFrame(StackFrame* frame) const;
   bool IsValidCaller(StackFrame* frame);
-  static bool IsValidTop(Address low_bound, Address high_bound);
+  static bool IsValidTop(Isolate* isolate,
+                         Address low_bound, Address high_bound);
 
   // This is a nasty hack to make sure the active count is incremented
   // before the constructor for the embedded iterator is invoked. This
   // is needed because the constructor will start looking at frames
   // right away and we need to make sure it doesn't start inspecting
   // heap objects.
   class ActiveCountMaintainer BASE_EMBEDDED {
    public:
     ActiveCountMaintainer() { active_count_++; }
     ~ActiveCountMaintainer() { active_count_--; }
   };
 
   ActiveCountMaintainer maintainer_;
+  // TODO(isolates): this is dangerous.
   static int active_count_;
   StackAddressValidator stack_validator_;
   const bool is_valid_top_;
   const bool is_valid_fp_;
   const bool is_working_iterator_;
   bool iteration_done_;
   StackFrameIterator iterator_;
 };
 
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
 typedef JavaScriptFrameIteratorTemp<SafeStackFrameIterator>
     SafeJavaScriptFrameIterator;
 
 
 class SafeStackTraceFrameIterator: public SafeJavaScriptFrameIterator {
  public:
-  explicit SafeStackTraceFrameIterator(Address fp, Address sp,
+  explicit SafeStackTraceFrameIterator(Isolate* isolate,
+                                       Address fp, Address sp,
                                        Address low_bound, Address high_bound);
   void Advance();
 };
 #endif
 
 
 class StackFrameLocator BASE_EMBEDDED {
  public:
   // Find the nth JavaScript frame on the stack. The caller must
   // guarantee that such a frame exists.
   JavaScriptFrame* FindJavaScriptFrame(int n);
 
  private:
   StackFrameIterator iterator_;
 };
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap();
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_