1 /* 2 * Copyright (c) 2021-2024 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_HANDLE_SCOPE_H 17 #define ECMASCRIPT_HANDLE_SCOPE_H 18 19 #include "ecmascript/js_tagged_value.h" 20 #ifdef ECMASCRIPT_ENABLE_HANDLE_LEAK_CHECK 21 #include "ecmascript/platform/backtrace.h" 22 #include "ecmascript/log_wrapper.h" 23 #include "ecmascript/mem/clock_scope.h" 24 #endif 25 26 namespace panda::ecmascript { 27 class JSThread; 28 /* 29 * Handles are only valid within a HandleScope. When a handle is created for an object a cell is allocated in the 30 * current HandleScope. 31 */ 32 33 class EcmaHandleScope { 34 public: 35 explicit PUBLIC_API EcmaHandleScope(JSThread *thread); 36 37 PUBLIC_API ~EcmaHandleScope(); 38 static uintptr_t PUBLIC_API NewHandle(JSThread *thread, JSTaggedType value); 39 static uintptr_t PUBLIC_API NewPrimitiveHandle(JSThread *thread, JSTaggedType value); 40 void OpenHandleScope(EcmaContext *context); 41 void OpenPrimitiveScope(EcmaContext *context); 42 void CloseHandleScope(EcmaContext *context); 43 void ClosePrimitiveScope(EcmaContext *context); 44 GetThread()45 JSThread *GetThread() const 46 { 47 return thread_; 48 } 49 50 private: 51 JSThread *thread_; 52 JSTaggedType *prevNext_; 53 JSTaggedType *prevEnd_; 54 int prevHandleStorageIndex_ {-1}; 55 JSTaggedType *prevPrimitiveNext_; 56 JSTaggedType *prevPrimitiveEnd_; 57 int prevPrimitiveStorageIndex_ {-1}; 58 #ifdef ECMASCRIPT_ENABLE_HANDLE_LEAK_CHECK 59 ClockScope scope_; 60 EcmaHandleScope *prevHandleScope_ {nullptr}; 61 EcmaHandleScope *prevPrimitiveScope_ {nullptr}; 62 #endif 63 64 NO_COPY_SEMANTIC(EcmaHandleScope); 65 NO_MOVE_SEMANTIC(EcmaHandleScope); 66 }; 67 } // namespace panda::ecmascript 68 #endif // ECMASCRIPT_HANDLE_SCOPE_H 69