1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef ECMASCRIPT_JS_SHARED_TYPED_ARRAY_H 17 #define ECMASCRIPT_JS_SHARED_TYPED_ARRAY_H 18 19 #include "ecmascript/js_typed_array.h" 20 21 #include "ecmascript/js_dataview.h" 22 #include "ecmascript/js_object.h" 23 #include "ecmascript/tagged_array.h" 24 25 namespace panda::ecmascript { 26 class JSSharedTypedArray : public JSTypedArray { 27 public: 28 static constexpr size_t MAX_ONHEAP_LENGTH = 512 * 8; Cast(TaggedObject * object)29 static JSSharedTypedArray *Cast(TaggedObject *object) 30 { 31 #if ECMASCRIPT_ENABLE_CAST_CHECK 32 if (!(JSTaggedValue(object).IsSharedTypedArray() || JSTaggedValue(object).IsJSSharedTypedArray())) { 33 LOG_ECMA(FATAL) << "this branch is unreachable"; 34 UNREACHABLE(); 35 } 36 #else 37 ASSERT(JSTaggedValue(object).IsSharedTypedArray() || JSTaggedValue(object).IsJSSharedTypedArray()); 38 #endif 39 return static_cast<JSSharedTypedArray *>(object); 40 } 41 42 static JSTaggedValue GetSharedOffHeapBuffer(JSThread *thread, JSHandle<JSSharedTypedArray> typedArray); 43 44 static constexpr size_t MOD_RECORD_OFFSET = JSTypedArray::SIZE; 45 ACCESSORS_SYNCHRONIZED_PRIMITIVE_FIELD(ModRecord, uint32_t, MOD_RECORD_OFFSET, LAST_OFFSET) 46 DEFINE_ALIGN_SIZE(LAST_OFFSET); 47 48 static constexpr uint32_t MAX_INLINE = PropertyAttributes::MAX_FAST_PROPS_CAPACITY - 49 SIZE / JSTaggedValue::TaggedTypeSize() + 1; 50 DECL_VISIT_OBJECT_FOR_JS_OBJECT(JSTypedArray, MOD_RECORD_OFFSET, MOD_RECORD_OFFSET) 51 DECL_DUMP() 52 }; 53 } // namespace panda::ecmascript 54 #endif // ECMASCRIPT_JS_SHARED_TYPED_ARRAY_H 55