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// 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_
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