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 Isolate;
      14             : class JavaScriptFrame;
      15             : class JSFunction;
      16             : enum class OptimizationReason : uint8_t;
      17             : 
      18             : class RuntimeProfiler {
      19             :  public:
      20             :   explicit RuntimeProfiler(Isolate* isolate);
      21             : 
      22             :   void MarkCandidatesForOptimization();
      23             : 
      24     5738584 :   void NotifyICChanged() { any_ic_changed_ = true; }
      25             : 
      26             :   void AttemptOnStackReplacement(JavaScriptFrame* frame,
      27             :                                  int nesting_levels = 1);
      28             : 
      29             :  private:
      30             :   void MaybeOptimize(JSFunction* function, JavaScriptFrame* frame);
      31             :   // Potentially attempts OSR from and returns whether no other
      32             :   // optimization attempts should be made.
      33             :   bool MaybeOSR(JSFunction* function, JavaScriptFrame* frame);
      34             :   OptimizationReason ShouldOptimize(JSFunction* function,
      35             :                                     JavaScriptFrame* frame);
      36             :   void Optimize(JSFunction* function, OptimizationReason reason);
      37             :   void Baseline(JSFunction* function, OptimizationReason reason);
      38             : 
      39             :   Isolate* isolate_;
      40             :   bool any_ic_changed_;
      41             : };
      42             : 
      43             : }  // namespace internal
      44             : }  // namespace v8
      45             : 
      46             : #endif  // V8_RUNTIME_PROFILER_H_