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JSFFIFunction.cpp
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JSFFIFunction.cpp
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/*
* Copyright (C) 2015-2021 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 "root.h"
#include "JSFFIFunction.h"
#include <JavaScriptCore/JSCJSValueInlines.h>
#include <JavaScriptCore/VM.h>
#include "ZigGlobalObject.h"
#include <JavaScriptCore/DOMJITAbstractHeap.h>
#include "DOMJITIDLConvert.h"
#include "DOMJITIDLType.h"
#include "DOMJITIDLTypeFilter.h"
#include "DOMJITHelpers.h"
class FFICallbackFunctionWrapper {
WTF_MAKE_FAST_ALLOCATED;
public:
JSC::Strong<JSC::JSFunction> m_function;
JSC::Strong<Zig::GlobalObject> globalObject;
~FFICallbackFunctionWrapper() = default;
FFICallbackFunctionWrapper(JSC::JSFunction* function, Zig::GlobalObject* globalObject)
: m_function(globalObject->vm(), function)
, globalObject(globalObject->vm(), globalObject)
{
}
};
extern "C" void FFICallbackFunctionWrapper_destroy(FFICallbackFunctionWrapper* wrapper)
{
delete wrapper;
}
extern "C" FFICallbackFunctionWrapper* Bun__createFFICallbackFunction(
Zig::GlobalObject* globalObject,
JSC::EncodedJSValue callbackFn)
{
auto* vm = &globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(*vm);
auto* callbackFunction = jsCast<JSC::JSFunction*>(JSC::JSValue::decode(callbackFn));
auto* wrapper = new FFICallbackFunctionWrapper(callbackFunction, globalObject);
return wrapper;
}
extern "C" Zig::JSFFIFunction* Bun__CreateFFIFunctionWithData(Zig::GlobalObject* globalObject, const ZigString* symbolName, unsigned argCount, Zig::FFIFunction functionPointer, bool strong, void* data)
{
JSC::VM& vm = globalObject->vm();
Zig::JSFFIFunction* function = Zig::JSFFIFunction::create(vm, globalObject, argCount, symbolName != nullptr ? Zig::toStringCopy(*symbolName) : String(), functionPointer, JSC::NoIntrinsic);
if (strong)
globalObject->trackFFIFunction(function);
function->dataPtr = data;
return function;
}
extern "C" JSC::EncodedJSValue Bun__CreateFFIFunctionWithDataValue(Zig::GlobalObject* globalObject, const ZigString* symbolName, unsigned argCount, Zig::FFIFunction functionPointer, bool strong, void* data)
{
return JSC::JSValue::encode(Bun__CreateFFIFunctionWithData(globalObject, symbolName, argCount, functionPointer, strong, data));
}
extern "C" Zig::JSFFIFunction* Bun__CreateFFIFunction(Zig::GlobalObject* globalObject, const ZigString* symbolName, unsigned argCount, Zig::FFIFunction functionPointer, bool strong)
{
return Bun__CreateFFIFunctionWithData(globalObject, symbolName, argCount, functionPointer, strong, nullptr);
}
extern "C" void* Bun__FFIFunction_getDataPtr(JSC::EncodedJSValue jsValue)
{
Zig::JSFFIFunction* function = jsDynamicCast<Zig::JSFFIFunction*>(JSC::JSValue::decode(jsValue));
if (!function)
return nullptr;
return function->dataPtr;
}
extern "C" void Bun__FFIFunction_setDataPtr(JSC::EncodedJSValue jsValue, void* ptr)
{
Zig::JSFFIFunction* function = jsDynamicCast<Zig::JSFFIFunction*>(JSC::JSValue::decode(jsValue));
if (!function)
return;
function->dataPtr = ptr;
}
extern "C" void Bun__untrackFFIFunction(Zig::GlobalObject* globalObject, JSC::EncodedJSValue function)
{
globalObject->untrackFFIFunction(JSC::jsCast<JSC::JSFunction*>(JSC::JSValue::decode(function)));
}
extern "C" JSC::EncodedJSValue Bun__CreateFFIFunctionValue(Zig::GlobalObject* globalObject, const ZigString* symbolName, unsigned argCount, Zig::FFIFunction functionPointer, bool strong, bool addPtrField)
{
auto* function = Bun__CreateFFIFunction(globalObject, symbolName, argCount, functionPointer, strong);
if (addPtrField) {
auto& vm = globalObject->vm();
// We should only expose the "ptr" field when it's a JSCallback for bun:ffi.
// Not for internal usages of this function type.
// We should also consider a separate JSFunction type for our usage to not have this branch in the first place...
function->putDirect(vm, JSC::Identifier::fromString(vm, String(MAKE_STATIC_STRING_IMPL("ptr"))), JSC::jsNumber(bitwise_cast<double>(functionPointer)), JSC::PropertyAttribute::ReadOnly | 0);
}
return JSC::JSValue::encode(function);
}
namespace Zig {
using namespace JSC;
const ClassInfo JSFFIFunction::s_info = { "Function"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSFFIFunction) };
JSFFIFunction::JSFFIFunction(VM& vm, NativeExecutable* executable, JSGlobalObject* globalObject, Structure* structure, FFIFunction&& function)
: Base(vm, executable, globalObject, structure)
, m_function(WTFMove(function))
{
// used in NAPI
dataPtr = nullptr;
}
template<typename Visitor>
void JSFFIFunction::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
JSFFIFunction* thisObject = jsCast<JSFFIFunction*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
}
DEFINE_VISIT_CHILDREN(JSFFIFunction);
void JSFFIFunction::finishCreation(VM& vm, NativeExecutable* executable, unsigned length, const String& name)
{
Base::finishCreation(vm, executable, length, name);
ASSERT(inherits(info()));
}
JSFFIFunction* JSFFIFunction::create(VM& vm, Zig::GlobalObject* globalObject, unsigned length, const String& name, FFIFunction FFIFunction, Intrinsic intrinsic, NativeFunction nativeConstructor)
{
NativeExecutable* executable = vm.getHostFunction(FFIFunction, ImplementationVisibility::Public, intrinsic, FFIFunction, nullptr, name);
Structure* structure = globalObject->FFIFunctionStructure();
JSFFIFunction* function = new (NotNull, allocateCell<JSFFIFunction>(vm)) JSFFIFunction(vm, executable, globalObject, structure, WTFMove(FFIFunction));
function->finishCreation(vm, executable, length, name);
return function;
}
} // namespace JSC
extern "C" JSC::EncodedJSValue
FFI_Callback_call(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
for (size_t i = 0; i < argCount; ++i)
arguments.appendWithCrashOnOverflow(JSC::JSValue::decode(args[i]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" void
FFI_Callback_threadsafe_call(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* globalObject = wrapper.globalObject.get();
WTF::Vector<JSC::EncodedJSValue, 8> argsVec;
for (size_t i = 0; i < argCount; ++i)
argsVec.append(args[i]);
WebCore::ScriptExecutionContext::postTaskTo(globalObject->scriptExecutionContext()->identifier(), [argsVec = WTFMove(argsVec), wrapper](WebCore::ScriptExecutionContext& ctx) mutable {
auto* globalObject = JSC::jsCast<Zig::GlobalObject*>(ctx.jsGlobalObject());
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
auto* function = wrapper.m_function.get();
for (size_t i = 0; i < argsVec.size(); ++i)
arguments.appendWithCrashOnOverflow(JSC::JSValue::decode(argsVec[i]));
WTF::NakedPtr<JSC::Exception> exception;
JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return;
}
});
}
extern "C" JSC::EncodedJSValue
FFI_Callback_call_0(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue
FFI_Callback_call_1(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
arguments.append(JSC::JSValue::decode(args[0]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue
FFI_Callback_call_2(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
arguments.append(JSC::JSValue::decode(args[0]));
arguments.append(JSC::JSValue::decode(args[1]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue FFI_Callback_call_3(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
arguments.append(JSC::JSValue::decode(args[0]));
arguments.append(JSC::JSValue::decode(args[1]));
arguments.append(JSC::JSValue::decode(args[2]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue FFI_Callback_call_4(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
arguments.append(JSC::JSValue::decode(args[0]));
arguments.append(JSC::JSValue::decode(args[1]));
arguments.append(JSC::JSValue::decode(args[2]));
arguments.append(JSC::JSValue::decode(args[3]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue FFI_Callback_call_5(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
arguments.append(JSC::JSValue::decode(args[0]));
arguments.append(JSC::JSValue::decode(args[1]));
arguments.append(JSC::JSValue::decode(args[2]));
arguments.append(JSC::JSValue::decode(args[3]));
arguments.append(JSC::JSValue::decode(args[4]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue
FFI_Callback_call_6(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
arguments.append(JSC::JSValue::decode(args[0]));
arguments.append(JSC::JSValue::decode(args[1]));
arguments.append(JSC::JSValue::decode(args[2]));
arguments.append(JSC::JSValue::decode(args[3]));
arguments.append(JSC::JSValue::decode(args[4]));
arguments.append(JSC::JSValue::decode(args[5]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}
extern "C" JSC::EncodedJSValue
FFI_Callback_call_7(FFICallbackFunctionWrapper& wrapper, size_t argCount, JSC::EncodedJSValue* args)
{
auto* function = wrapper.m_function.get();
auto* globalObject = wrapper.globalObject.get();
auto& vm = globalObject->vm();
JSC::MarkedArgumentBuffer arguments;
arguments.append(JSC::JSValue::decode(args[0]));
arguments.append(JSC::JSValue::decode(args[1]));
arguments.append(JSC::JSValue::decode(args[2]));
arguments.append(JSC::JSValue::decode(args[3]));
arguments.append(JSC::JSValue::decode(args[4]));
arguments.append(JSC::JSValue::decode(args[5]));
arguments.append(JSC::JSValue::decode(args[6]));
WTF::NakedPtr<JSC::Exception> exception;
auto result = JSC::call(globalObject, function, JSC::getCallData(function), JSC::jsUndefined(), arguments, exception);
if (UNLIKELY(exception)) {
auto scope = DECLARE_THROW_SCOPE(vm);
scope.throwException(globalObject, exception);
return JSC::JSValue::encode(JSC::jsNull());
}
return JSC::JSValue::encode(result);
}