Line data    Source code

       1             : // Copyright 2012 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_RUNTIME_PROFILER_H_
       6             : #define V8_RUNTIME_PROFILER_H_
       7             : 
       8             : #include "src/allocation.h"
       9             : 
      10             : namespace v8 {
      11             : namespace internal {
      12             : 
      13             : class BytecodeArray;
      14             : class Isolate;
      15             : class InterpretedFrame;
      16             : class JSFunction;
      17             : enum class OptimizationReason : uint8_t;
      18             : 
      19             : class RuntimeProfiler {
      20             :  public:
      21             :   explicit RuntimeProfiler(Isolate* isolate);
      22             : 
      23             :   void MarkCandidatesForOptimization();
      24             : 
      25     2979938 :   void NotifyICChanged() { any_ic_changed_ = true; }
      26             : 
      27             :   void AttemptOnStackReplacement(InterpretedFrame* frame,
      28             :                                  int nesting_levels = 1);
      29             : 
      30             :  private:
      31             :   void MaybeOptimize(JSFunction function, InterpretedFrame* frame);
      32             :   // Potentially attempts OSR from and returns whether no other
      33             :   // optimization attempts should be made.
      34             :   bool MaybeOSR(JSFunction function, InterpretedFrame* frame);
      35             :   OptimizationReason ShouldOptimize(JSFunction function,
      36             :                                     BytecodeArray bytecode_array);
      37             :   void Optimize(JSFunction function, OptimizationReason reason);
      38             :   void Baseline(JSFunction function, OptimizationReason reason);
      39             : 
      40             :   Isolate* isolate_;
      41             :   bool any_ic_changed_;
      42             : };
      43             : 
      44             : }  // namespace internal
      45             : }  // namespace v8
      46             : 
      47             : #endif  // V8_RUNTIME_PROFILER_H_