1 /* 2 * Copyright (c) 2021 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_SNAPSHOT_MEM_SNAPSHOT_PROCESSOR_H 17 #define ECMASCRIPT_SNAPSHOT_MEM_SNAPSHOT_PROCESSOR_H 18 19 #include <iostream> 20 #include <fstream> 21 #include <sstream> 22 23 #include "ecmascript/snapshot/mem/encode_bit.h" 24 #include "ecmascript/jspandafile/method_literal.h" 25 #include "ecmascript/js_tagged_value.h" 26 #include "ecmascript/mem/object_xray.h" 27 28 #include "libpandabase/macros.h" 29 30 namespace panda::ecmascript { 31 class EcmaVM; 32 class JSPandaFile; 33 class AOTFileManager; 34 35 enum class SnapshotType { 36 VM_ROOT, 37 BUILTINS, 38 AI 39 }; 40 41 using ObjectEncode = std::pair<uint64_t, ecmascript::EncodeBit>; 42 43 class SnapshotProcessor final { 44 public: SnapshotProcessor(EcmaVM * vm)45 explicit SnapshotProcessor(EcmaVM *vm) 46 : vm_(vm), objXRay_(vm) {} 47 ~SnapshotProcessor(); 48 49 void Initialize(); 50 void StopAllocate(); 51 void WriteObjectToFile(std::fstream &write); 52 std::vector<uint32_t> StatisticsObjectSize(); 53 void ProcessObjectQueue(CQueue<TaggedObject *> *queue, std::unordered_map<uint64_t, ObjectEncode> *data); 54 void SerializeObject(TaggedObject *objectHeader, CQueue<TaggedObject *> *queue, 55 std::unordered_map<uint64_t, ObjectEncode> *data); 56 void Relocate(SnapshotType type, const JSPandaFile *jsPandaFile, 57 uint64_t rootObjSize); 58 void RelocateSpaceObject(const JSPandaFile *jsPandaFile, Space* space, SnapshotType type, MethodLiteral* methods, 59 size_t methodNums, size_t rootObjSize); 60 void SerializePandaFileMethod(); 61 uintptr_t GetNewObj(size_t objectSize, TaggedObject *objectHeader); 62 EncodeBit EncodeTaggedObject(TaggedObject *objectHeader, CQueue<TaggedObject *> *queue, 63 std::unordered_map<uint64_t, ObjectEncode> *data); 64 EncodeBit GetObjectEncode(JSTaggedValue object, CQueue<TaggedObject *> *queue, 65 std::unordered_map<uint64_t, ObjectEncode> *data); 66 void EncodeTaggedObjectRange(ObjectSlot start, ObjectSlot end, CQueue<TaggedObject *> *queue, 67 std::unordered_map<uint64_t, ObjectEncode> *data); 68 void DeserializeObjectExcludeString(uintptr_t oldSpaceBegin, size_t oldSpaceObjSize, size_t nonMovableObjSize, 69 size_t machineCodeObjSize, size_t snapshotObjSize, size_t hugeSpaceObjSize); 70 void DeserializeString(uintptr_t stringBegin, uintptr_t stringEnd); 71 72 void AddRootObjectToAOTFileManager(SnapshotType type, const CString &fileName); 73 SetProgramSerializeStart()74 void SetProgramSerializeStart() 75 { 76 programSerialize_ = true; 77 } 78 SetBuiltinsSerializeStart()79 void SetBuiltinsSerializeStart() 80 { 81 builtinsSerialize_ = true; 82 } 83 SetBuiltinsDeserializeStart()84 void SetBuiltinsDeserializeStart() 85 { 86 builtinsDeserialize_ = true; 87 } 88 GetStringVector()89 const CVector<uintptr_t> GetStringVector() const 90 { 91 return stringVector_; 92 } 93 GetOldLocalSpace()94 LocalSpace* GetOldLocalSpace() const 95 { 96 return oldLocalSpace_; 97 } 98 99 size_t GetNativeTableSize() const; 100 101 private: GetMarkGCBitSetSize()102 size_t GetMarkGCBitSetSize() const 103 { 104 return GCBitset::SizeOfGCBitset(DEFAULT_REGION_SIZE - 105 AlignUp(sizeof(Region), static_cast<size_t>(MemAlignment::MEM_ALIGN_REGION))); 106 } 107 108 bool VisitObjectBodyWithRep(TaggedObject *root, ObjectSlot slot, uintptr_t obj, int index, VisitObjectArea area); 109 void SetObjectEncodeField(uintptr_t obj, size_t offset, uint64_t value); 110 111 EncodeBit SerializeObjectHeader(TaggedObject *objectHeader, size_t objectType, CQueue<TaggedObject *> *queue, 112 std::unordered_map<uint64_t, ObjectEncode> *data); 113 uint64_t SerializeTaggedField(JSTaggedType *tagged, CQueue<TaggedObject *> *queue, 114 std::unordered_map<uint64_t, ObjectEncode> *data); 115 void DeserializeField(TaggedObject *objectHeader); 116 void DeserializeTaggedField(uint64_t *value, TaggedObject *root); 117 void DeserializeNativePointer(uint64_t *value); 118 void DeserializeClassWord(TaggedObject *object); 119 void DeserializePandaMethod(uintptr_t begin, uintptr_t end, MethodLiteral *methods, 120 size_t &methodNums, size_t &others); 121 void DeserializeSpaceObject(uintptr_t beginAddr, Space* space, size_t spaceObjSize); 122 void DeserializeHugeSpaceObject(uintptr_t beginAddr, HugeObjectSpace* space, size_t hugeSpaceObjSize); 123 void HandleRootObject(SnapshotType type, uintptr_t rootObjectAddr, size_t objType, size_t &constSpecialIndex); 124 125 EncodeBit NativePointerToEncodeBit(void *nativePointer); 126 size_t SearchNativeMethodIndex(void *nativePointer); 127 uintptr_t TaggedObjectEncodeBitToAddr(EncodeBit taggedBit); 128 void WriteSpaceObjectToFile(Space* space, std::fstream &write); 129 void WriteHugeObjectToFile(HugeObjectSpace* space, std::fstream &writer); 130 uint32_t StatisticsSpaceObjectSize(Space* space); 131 uint32_t StatisticsHugeObjectSize(HugeObjectSpace* space); 132 uintptr_t AllocateObjectToLocalSpace(Space *space, size_t objectSize); 133 134 EcmaVM *vm_ {nullptr}; 135 LocalSpace *oldLocalSpace_ {nullptr}; 136 LocalSpace *nonMovableLocalSpace_ {nullptr}; 137 LocalSpace *machineCodeLocalSpace_ {nullptr}; 138 SnapshotSpace *snapshotLocalSpace_ {nullptr}; 139 HugeObjectSpace *hugeObjectLocalSpace_ {nullptr}; 140 ObjectXRay objXRay_; 141 bool programSerialize_ {false}; 142 bool builtinsSerialize_ {false}; 143 bool builtinsDeserialize_ {false}; 144 CVector<uintptr_t> pandaMethod_; 145 CVector<uintptr_t> stringVector_; 146 std::unordered_map<size_t, Region *> regionIndexMap_; 147 size_t regionIndex_ {0}; 148 bool isRootObjRelocate_ {false}; 149 JSTaggedValue root_ {JSTaggedValue::Hole()}; 150 151 NO_COPY_SEMANTIC(SnapshotProcessor); 152 NO_MOVE_SEMANTIC(SnapshotProcessor); 153 }; 154 155 class SnapshotHelper { 156 public: 157 // when snapshot serialize, huge obj size is writed to region snapshotData_ high 32 bits EncodeHugeObjectSize(uint64_t objSize)158 static inline uint64_t EncodeHugeObjectSize(uint64_t objSize) 159 { 160 return objSize << Constants::UINT_32_BITS_COUNT; 161 } 162 163 // get huge object size which is saved in region snapshotData_ high 32 bits GetHugeObjectSize(uint64_t snapshotData)164 static inline size_t GetHugeObjectSize(uint64_t snapshotData) 165 { 166 return snapshotData >> Constants::UINT_32_BITS_COUNT; 167 } 168 169 // get huge object region index which is saved in region snapshotMark_ low 32 bits GetHugeObjectRegionIndex(uint64_t snapshotData)170 static inline size_t GetHugeObjectRegionIndex(uint64_t snapshotData) 171 { 172 return snapshotData & Constants::MAX_UINT_32; 173 } 174 }; 175 } // namespace panda::ecmascript 176 177 #endif // ECMASCRIPT_SNAPSHOT_MEM_SNAPSHOT_PROCESSOR_H 178