Source/JavaScriptCore/wasm/WasmBaselineData.h

/*
 * Copyright (C) 2025 Apple Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions
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#pragma once

#include <wtf/Platform.h>

#if ENABLE(WEBASSEMBLY)

#include <JavaScriptCore/WasmCallProfile.h>
#include <JavaScriptCore/WasmCallee.h>
#include <JavaScriptCore/WasmCallingConvention.h>
#include <wtf/text/WTFString.h>

namespace JSC::Wasm {

// Per-instance side data for wasm baseline execution (IPInt and BBQ).
// Mainly for profiling / IC.
class BaselineData final : public ThreadSafeRefCounted<BaselineData>, public TrailingArray<BaselineData, CallProfile> {
    WTF_DEPRECATED_MAKE_FAST_ALLOCATED(BaselineData);
    WTF_MAKE_NONMOVABLE(BaselineData);
    using TrailingArrayType = TrailingArray<BaselineData, CallProfile>;
    friend TrailingArrayType;
public:

    static Ref<BaselineData> create(const IPIntCallee& callee)
    {
        return adoptRef(*new (fastMalloc(allocationSize(callee.numCallProfiles()))) BaselineData(callee.numCallProfiles()));
    }

    uint32_t totalCount() const { return m_totalCount; }
    void incrementTotalCount() { ++m_totalCount; }

    static constexpr ptrdiff_t offsetOfTotalCount() { return OBJECT_OFFSETOF(BaselineData, m_totalCount); }

private:
    BaselineData(unsigned size)
        : TrailingArrayType(size)
    {
    }

    uint32_t m_totalCount { 0 };
};

} // namespace JSC::Wasm

#endif // ENABLE(WEBASSEMBLY)