/*

* Copyright (C) 2026 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 "MicrotaskCall.h"

#include "CodeBlock.h"

#include "Interpreter.h"

#include "JSFunction.h"

#include "ThrowScope.h"

namespace JSC {

void MicrotaskCall::initialize(VM& vm, JSFunction* function)

{

m_addressForCall = nullptr;

m_functionExecutable = function->jsExecutable();

relink(vm, function);

}

void MicrotaskCall::relink(VM& vm, JSFunction* function)

{

auto scope = DECLARE_THROW_SCOPE(vm);

// Unlink from any prior CodeBlock before we reset state.

if (isOnList())

remove();

auto* newCodeBlock = vm.interpreter.prepareForMicrotaskCall(*this, function);

RETURN_IF_EXCEPTION_WITH_TRAPS_DEFERRED(scope, void());

m_codeBlock = newCodeBlock;

m_numParameters = newCodeBlock->numParameters();

}

void MicrotaskCall::unlinkOrUpgradeImpl(VM&, CodeBlock* oldCodeBlock, CodeBlock* newCodeBlock)

{

if (isOnList())

remove();

if (newCodeBlock && m_codeBlock == oldCodeBlock) {

newCodeBlock->m_shouldAlwaysBeInlined = false;

m_addressForCall = newCodeBlock->jitCode()->addressForCall();

m_codeBlock = newCodeBlock;

m_numParameters = newCodeBlock->numParameters();

newCodeBlock->linkIncomingCall(nullptr, this);

return;

}

m_addressForCall = nullptr;

}

} // namespace JSC