mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
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79 lines
3.3 KiB
C++
79 lines
3.3 KiB
C++
/*
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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/js_tagged_value-inl.h"
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#include "ecmascript/mem/barriers-inl.h"
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#include "ecmascript/object_factory.h"
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#include "ecmascript/platform/os.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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CopyDataPointBytes(toBuf, fromBuf, fromIndex, count);
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}
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void JSArrayBuffer::CopyDataPointBytes(void *toBuf, void *fromBuf, int32_t fromIndex, int32_t count)
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{
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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_FULL(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, uint32_t arrayBufferByteLength,
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JSTaggedValue arrayBufferData, bool transferWithNativeAreaAllocator)
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{
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ASSERT(arrayBufferData.IsJSNativePointer());
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// only in transition, should the JSArrayBuffer with NativeAreaAllocator increase mem usage
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if (transferWithNativeAreaAllocator) {
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LOG_FULL(DEBUG) << "attaching for transfer";
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JSHandle<JSNativePointer> np(thread, arrayBufferData.GetTaggedObject());
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NativeAreaAllocator *allocator = thread->GetEcmaVM()->GetNativeAreaAllocator();
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allocator->IncreaseNativeMemoryUsage(MallocUsableSize(np->GetExternalPointer()));
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np->SetData(allocator);
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}
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SetArrayBufferByteLength(arrayBufferByteLength);
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SetArrayBufferData(thread, arrayBufferData);
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}
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void JSArrayBuffer::Detach(JSThread *thread, bool transferWithNativeAreaAllocator, bool isSerialize)
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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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// only in transition, should the JSArrayBuffer with NativeAreaAllocator decrease mem usage
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if (transferWithNativeAreaAllocator) {
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LOG_FULL(DEBUG) << "detaching for transfer";
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JSHandle<JSNativePointer> np(thread, arrayBufferData.GetTaggedObject());
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NativeAreaAllocator *allocator = thread->GetEcmaVM()->GetNativeAreaAllocator();
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allocator->DecreaseNativeMemoryUsage(MallocUsableSize(np->GetExternalPointer()));
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np->SetData(nullptr);
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}
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if (isSerialize && arrayBufferData.IsJSNativePointer()) {
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reinterpret_cast<JSNativePointer *>(arrayBufferData.GetTaggedObject())->SetDeleter(nullptr);
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}
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SetArrayBufferData(thread, JSTaggedValue::Null());
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SetArrayBufferByteLength(0);
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}
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} // namespace panda::ecmascript
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