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https://gitee.com/openharmony/arkcompiler_ets_runtime
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65 lines
2.4 KiB
C++
65 lines
2.4 KiB
C++
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/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ecmascript/js_arraybuffer.h"
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#include "ecmascript/base/builtins_base.h"
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#include "ecmascript/ecma_macros.h"
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#include "ecmascript/ecma_vm.h"
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#include "ecmascript/object_factory.h"
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#include "ecmascript/tagged_array.h"
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#include "securec.h"
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namespace panda::ecmascript {
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void JSArrayBuffer::CopyDataBlockBytes(JSTaggedValue toBlock, JSTaggedValue fromBlock, int32_t fromIndex, int32_t count)
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{
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void *fromBuf = JSNativePointer::Cast(fromBlock.GetTaggedObject())->GetExternalPointer();
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void *toBuf = JSNativePointer::Cast(toBlock.GetTaggedObject())->GetExternalPointer();
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auto *from = static_cast<uint8_t *>(fromBuf);
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auto *to = static_cast<uint8_t *>(toBuf);
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if (memcpy_s(to, count, from + fromIndex, count) != EOK) { // NOLINT
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LOG_ECMA(FATAL) << "memcpy_s failed";
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UNREACHABLE();
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}
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}
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void JSArrayBuffer::Attach(JSThread *thread, JSTaggedValue arrayBufferByteLength, JSTaggedValue arrayBufferData)
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{
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ASSERT(arrayBufferData.IsNativePointer());
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SetArrayBufferByteLength(thread, arrayBufferByteLength);
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SetArrayBufferData(thread, arrayBufferData);
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EcmaVM *vm = thread->GetEcmaVM();
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vm->PushToArrayDataList(JSNativePointer::Cast(arrayBufferData.GetHeapObject()));
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}
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void JSArrayBuffer::Detach(JSThread *thread)
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{
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JSTaggedValue arrayBufferData = GetArrayBufferData();
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// already detached.
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if (arrayBufferData.IsNull()) {
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return;
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}
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EcmaVM *vm = thread->GetEcmaVM();
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// remove vm's control over arrayBufferData.
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JSNativePointer *jsNativePointer = JSNativePointer::Cast(arrayBufferData.GetHeapObject());
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vm->RemoveArrayDataList(jsNativePointer);
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jsNativePointer->Destroy();
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SetArrayBufferData(thread, JSTaggedValue::Null());
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SetArrayBufferByteLength(thread, JSTaggedValue(0));
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}
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} // namespace panda::ecmascript
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