Source/JavaScriptCore/tools/SourceProfiler.cpp

/*
 * Copyright (C) 2025 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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#include "config.h"
#include "SourceProfiler.h"

namespace JSC {
namespace SourceProfiler {

#if OS(DARWIN)
__attribute__((section("__DATA_DIRTY,__data")))
#endif
ProfilerHook g_profilerHook = nullptr;

void profile(Type type, const SourceCode& source)
{
    RefPtr<SourceProvider> provider = source.provider();
    StringView sourceView = source.view();
    StringView urlView = provider ? provider->sourceURLStripped() : nullString();

    Payload payload = {
        .majorVersion = majorVersion,
        .minorVersion = minorVersion,
        .sourceStr = sourceView.rawCharacters(),
        .sourceLength = sourceView.length(),
        .sourceCharSize = sourceView.is8Bit() ? CharacterSize::Char8Bit : CharacterSize::Char16Bit,
        .urlStr = urlView.rawCharacters(),
        .urlLength = urlView.length(),
        .urlCharSize = urlView.is8Bit() ? CharacterSize::Char8Bit : CharacterSize::Char16Bit,
    };

    g_profilerHook(type, &payload);
}

} // namespace SourceProfiler
} // namespace JSC