Line data    Source code

       1             : // Copyright 2017 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_VECTOR_SLOT_PAIR_H_
       6             : #define V8_VECTOR_SLOT_PAIR_H_
       7             : 
       8             : #include "src/globals.h"
       9             : #include "src/handles.h"
      10             : #include "src/utils.h"
      11             : 
      12             : namespace v8 {
      13             : namespace internal {
      14             : 
      15             : class FeedbackVector;
      16             : 
      17             : // Defines a pair of {FeedbackVector} and {FeedbackSlot}, which
      18             : // is used to access the type feedback for a certain {Node}.
      19   566266920 : class V8_EXPORT_PRIVATE VectorSlotPair {
      20             :  public:
      21             :   VectorSlotPair();
      22             :   VectorSlotPair(Handle<FeedbackVector> vector, FeedbackSlot slot,
      23             :                  InlineCacheState ic_state)
      24         139 :       : vector_(vector), slot_(slot), ic_state_(ic_state) {}
      25             : 
      26    12642139 :   bool IsValid() const { return !vector_.is_null() && !slot_.IsInvalid(); }
      27             : 
      28             :   Handle<FeedbackVector> vector() const { return vector_; }
      29             :   FeedbackSlot slot() const { return slot_; }
      30             :   InlineCacheState ic_state() const { return ic_state_; }
      31             : 
      32             :   int index() const;
      33             : 
      34             :  private:
      35             :   Handle<FeedbackVector> vector_;
      36             :   FeedbackSlot slot_;
      37             :   InlineCacheState ic_state_ = UNINITIALIZED;
      38             : };
      39             : 
      40             : bool operator==(VectorSlotPair const&, VectorSlotPair const&);
      41             : bool operator!=(VectorSlotPair const&, VectorSlotPair const&);
      42             : 
      43             : V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os,
      44             :                                            VectorSlotPair const&);
      45             : 
      46             : size_t hash_value(VectorSlotPair const&);
      47             : 
      48             : }  // namespace internal
      49             : }  // namespace v8
      50             : 
      51             : #endif  // V8_VECTOR_SLOT_PAIR_H_