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MicrotaskCallInlines.h
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MicrotaskCallInlines.h
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/*
* 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.
*/
#
pragma
once
#
include
<
JavaScriptCore/LLIntThunks.h
>
#
include
<
JavaScriptCore/MicrotaskCall.h
>
#
include
<
JavaScriptCore/VMTrapsInlines.h
>
#
include
<
wtf/StackStats.h
>
#
if
ASSERT_ENABLED
#
include
<
JavaScriptCore/IntegrityInlines.h
>
#
endif
namespace
JSC
{
template
<
typename
... Args>
requires
(std::is_convertible_v<Args, JSValue> && ...)
ALWAYS_INLINE JSValue MicrotaskCall::tryCallWithArguments(
VM
& vm, JSFunction* function, JSValue thisValue, JSCell* context, Args... args)
{
auto
scope =
DECLARE_THROW_SCOPE
(vm);
ASSERT_WITH_MESSAGE
(!thisValue.
isEmpty
(),
"
Expected thisValue to be non-empty. Use jsUndefined() if you meant to use undefined.
"
);
#
if
ASSERT_ENABLED
if
constexpr
(
sizeof
...(args) >
0
) {
size_t
argIndex =
0
;
auto
checkArg = [&argIndex, &vm](JSValue arg) {
ASSERT_WITH_MESSAGE
(!arg.
isEmpty
(),
"
arguments[%zu] is JSValue(). Use jsUndefined() if you meant to make it undefined.
"
, argIndex);
if
(arg.
isCell
())
Integrity::auditCell
(vm, arg.
asCell
());
++argIndex;
};
(
checkArg
(args), ...);
}
#
endif
ASSERT
(!vm.
isCollectorBusyOnCurrentThread
());
ASSERT
(vm.
currentThreadIsHoldingAPILock
());
constexpr
unsigned
argumentCountIncludingThis =
1
+
sizeof
...(args);
#
if
(CPU(ARM64) || CPU(X86_64)) && CPU(ADDRESS64) && !ENABLE(C_LOOP)
static_assert
(argumentCountIncludingThis <=
7
);
if
(m_numParameters <= argumentCountIncludingThis)
[[likely]]
{
auto
* entry = m_addressForCall;
if
(!entry)
[[unlikely]]
{
DeferTraps
deferTraps
(vm);
relink
(vm, function);
RETURN_IF_EXCEPTION_WITH_TRAPS_DEFERRED
(scope, { });
entry = m_addressForCall;
}
auto
* codeBlock = m_codeBlock;
if
constexpr
(!
sizeof
...(args))
RELEASE_AND_RETURN
(scope,
JSValue::decode
(
vmEntryToJavaScriptWith0Arguments
(entry, &vm, codeBlock, function, thisValue, context)));
else
if
constexpr
(
sizeof
...(args) ==
1
)
RELEASE_AND_RETURN
(scope,
JSValue::decode
(
vmEntryToJavaScriptWith1Arguments
(entry, &vm, codeBlock, function, thisValue, context, args...)));
else
if
constexpr
(
sizeof
...(args) ==
2
)
RELEASE_AND_RETURN
(scope,
JSValue::decode
(
vmEntryToJavaScriptWith2Arguments
(entry, &vm, codeBlock, function, thisValue, context, args...)));
else
if
constexpr
(
sizeof
...(args) ==
3
)
RELEASE_AND_RETURN
(scope,
JSValue::decode
(
vmEntryToJavaScriptWith3Arguments
(entry, &vm, codeBlock, function, thisValue, context, args...)));
else
if
constexpr
(
sizeof
...(args) ==
4
)
RELEASE_AND_RETURN
(scope,
JSValue::decode
(
vmEntryToJavaScriptWith4Arguments
(entry, &vm, codeBlock, function, thisValue, context, args...)));
else
if
constexpr
(
sizeof
...(args) ==
5
)
RELEASE_AND_RETURN
(scope,
JSValue::decode
(
vmEntryToJavaScriptWith5Arguments
(entry, &vm, codeBlock, function, thisValue, context, args...)));
else
if
constexpr
(
sizeof
...(args) ==
6
)
RELEASE_AND_RETURN
(scope,
JSValue::decode
(
vmEntryToJavaScriptWith6Arguments
(entry, &vm, codeBlock, function, thisValue, context, args...)));
else
return
{ };
}
#
else
UNUSED_PARAM
(function);
UNUSED_PARAM
(thisValue);
UNUSED_PARAM
(context);
UNUSED_VARIABLE
(scope);
UNUSED_VARIABLE
(argumentCountIncludingThis);
#
endif
return
{ };
}
}
//
namespace JSC
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