// Copyright 2012 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8_EXECUTION_RUNTIME_PROFILER_H_ #define V8_EXECUTION_RUNTIME_PROFILER_H_ #include "src/common/assert-scope.h" #include "src/handles/handles.h" #include "src/utils/allocation.h" namespace v8 { namespace internal { class BytecodeArray; class Isolate; class UnoptimizedFrame; class JavaScriptFrame; class JSFunction; enum class CodeKind; enum class OptimizationReason : uint8_t; class RuntimeProfiler { public: explicit RuntimeProfiler(Isolate* isolate); // Called from the interpreter when the bytecode interrupt has been exhausted. void MarkCandidatesForOptimizationFromBytecode(); // Likewise, from generated code. void MarkCandidatesForOptimizationFromCode(); void NotifyICChanged() { any_ic_changed_ = true; } void AttemptOnStackReplacement(UnoptimizedFrame* frame, int nesting_levels = 1); private: // Helper function called from MarkCandidatesForOptimization* void MarkCandidatesForOptimization(JavaScriptFrame* frame); // Make the decision whether to optimize the given function, and mark it for // optimization if the decision was 'yes'. void MaybeOptimizeFrame(JSFunction function, JavaScriptFrame* frame, CodeKind code_kind); // Potentially attempts OSR from and returns whether no other // optimization attempts should be made. bool MaybeOSR(JSFunction function, UnoptimizedFrame* frame); OptimizationReason ShouldOptimize(JSFunction function, BytecodeArray bytecode_array); void Optimize(JSFunction function, OptimizationReason reason, CodeKind code_kind); void Baseline(JSFunction function, OptimizationReason reason); class V8_NODISCARD MarkCandidatesForOptimizationScope final { public: explicit MarkCandidatesForOptimizationScope(RuntimeProfiler* profiler); ~MarkCandidatesForOptimizationScope(); private: HandleScope handle_scope_; RuntimeProfiler* const profiler_; DisallowGarbageCollection no_gc; }; Isolate* isolate_; bool any_ic_changed_; }; } // namespace internal } // namespace v8 #endif // V8_EXECUTION_RUNTIME_PROFILER_H_