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 NotifyICChanged()24 void NotifyICChanged() { any_ic_changed_ = true; } 25 26 void AttemptOnStackReplacement(JavaScriptFrame* frame, 27 int nesting_levels = 1); 28 29 private: 30 void MaybeOptimizeFullCodegen(JSFunction* function, JavaScriptFrame* frame, 31 int frame_count); 32 void MaybeBaselineIgnition(JSFunction* function, JavaScriptFrame* frame); 33 void MaybeOptimizeIgnition(JSFunction* function, JavaScriptFrame* frame); 34 // Potentially attempts OSR from ignition and returns whether no other 35 // optimization attempts should be made. 36 bool MaybeOSRIgnition(JSFunction* function, JavaScriptFrame* frame); 37 OptimizationReason ShouldOptimizeIgnition(JSFunction* function, 38 JavaScriptFrame* frame); 39 void Optimize(JSFunction* function, OptimizationReason reason); 40 void Baseline(JSFunction* function, OptimizationReason reason); 41 42 Isolate* isolate_; 43 bool any_ic_changed_; 44 }; 45 46 } // namespace internal 47 } // namespace v8 48 49 #endif // V8_RUNTIME_PROFILER_H_ 50