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/*
* 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
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WasmCallProfile.h"
#include "WasmMergedProfile.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMallocInlines.h>
#if ENABLE(WEBASSEMBLY)
namespace JSC::Wasm {
CallProfile::~CallProfile()
{
// Do not use ::polymorphic as it does not extract a callee when it is already megamorphic.
if (m_boxedCallee & Polymorphic) {
if (auto* poly = std::bit_cast<PolymorphicCallee*>(static_cast<uintptr_t>(m_boxedCallee & ~calleeMask)))
delete poly;
}
}
auto CallProfile::makePolymorphic() -> PolymorphicCallee*
{
ASSERT(monomorphic(m_boxedCallee));
auto* poly = PolymorphicCallee::create(maxPolymorphicCallees, this).release();
poly->at(0).m_count = m_count - 1; // The current ongoing count should not be included.
poly->at(0).m_boxedCallee = m_boxedCallee;
EncodedJSValue boxedCallee = (std::bit_cast<uintptr_t>(poly) | Polymorphic);
WTF::storeStoreFence();
m_boxedCallee = boxedCallee;
return poly;
}
} // namespace JSC::Wasm
#endif
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