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Reduce memory usage

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* Reduce size of RopeString
* Use fit memory if possible for ArrayObject fastModeData
* Re-implement ByteCode pruning logic
* Re-implement inline-cache for reducing memory usage
* Remove std::vector with gc_allocator. it can cause memory leak

Signed-off-by: seonghyun kim <sh8281.kim@samsung.com>
This commit is contained in:
seonghyun kim 2019-12-10 21:15:53 +09:00 • committed by Hyukwoo Park
commit fba9396ec9
74 changed files with 777 additions and 654 deletions
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36
src/parser/Script.cpp
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@ -307,6 +307,8 @@ Script::ResolveExportResult Script::resolveExport(ExecutionState& state, AtomicS
Value Script::executeModule(ExecutionState& state, Optional<Script*> referrer)
{
ByteCodeBlock* byteCodeBlock = m_topCodeBlock->byteCodeBlock();
// http://www.ecma-international.org/ecma-262/6.0/#sec-moduledeclarationinstantiation
// ModuleDeclarationInstantiation( ) Concrete Method
LexicalEnvironment* globalLexicalEnv = new LexicalEnvironment(
@ -425,18 +427,18 @@ Value Script::executeModule(ExecutionState& state, Optional<Script*> referrer)
newState.setLexicalEnvironment(new LexicalEnvironment(moduleRecord, globalLexicalEnv), true);
size_t literalStorageSize = m_topCodeBlock->byteCodeBlock()->m_numeralLiteralData.size();
Value* registerFile = (Value*)ALLOCA((m_topCodeBlock->byteCodeBlock()->m_requiredRegisterFileSizeInValueSize + 1 + literalStorageSize + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth()) * sizeof(Value), Value, state);
size_t literalStorageSize = byteCodeBlock->m_numeralLiteralData.size();
Value* registerFile = (Value*)ALLOCA((byteCodeBlock->m_requiredRegisterFileSizeInValueSize + 1 + literalStorageSize + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth()) * sizeof(Value), Value, state);
registerFile[0] = Value();
Value* stackStorage = registerFile + m_topCodeBlock->byteCodeBlock()->m_requiredRegisterFileSizeInValueSize;
Value* stackStorage = registerFile + byteCodeBlock->m_requiredRegisterFileSizeInValueSize;
stackStorage[0] = Value();
Value* literalStorage = stackStorage + 1 + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth();
Value* src = m_topCodeBlock->byteCodeBlock()->m_numeralLiteralData.data();
Value* src = byteCodeBlock->m_numeralLiteralData.data();
for (size_t i = 0; i < literalStorageSize; i++) {
literalStorage[i] = src[i];
}
Value resultValue = ByteCodeInterpreter::interpret(&newState, m_topCodeBlock->byteCodeBlock(), 0, registerFile);
Value resultValue = ByteCodeInterpreter::interpret(&newState, byteCodeBlock, 0, registerFile);
clearStack<512>();
// we give up program bytecodeblock after first excution for reducing memory usage
@ -459,6 +461,8 @@ Value Script::execute(ExecutionState& state, bool isExecuteOnEvalFunction, bool
return executeModule(state, nullptr);
}
ByteCodeBlock* byteCodeBlock = m_topCodeBlock->byteCodeBlock();
ExecutionState newState(context(), state.stackLimit());
ExecutionState* codeExecutionState = &newState;
@ -506,18 +510,18 @@ Value Script::execute(ExecutionState& state, bool isExecuteOnEvalFunction, bool
Value thisValue(context()->globalObject());
size_t literalStorageSize = m_topCodeBlock->byteCodeBlock()->m_numeralLiteralData.size();
Value* registerFile = (Value*)ALLOCA((m_topCodeBlock->byteCodeBlock()->m_requiredRegisterFileSizeInValueSize + 1 + literalStorageSize + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth()) * sizeof(Value), Value, state);
size_t literalStorageSize = byteCodeBlock->m_numeralLiteralData.size();
Value* registerFile = (Value*)ALLOCA((byteCodeBlock->m_requiredRegisterFileSizeInValueSize + 1 + literalStorageSize + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth()) * sizeof(Value), Value, state);
registerFile[0] = Value();
Value* stackStorage = registerFile + m_topCodeBlock->byteCodeBlock()->m_requiredRegisterFileSizeInValueSize;
Value* stackStorage = registerFile + byteCodeBlock->m_requiredRegisterFileSizeInValueSize;
stackStorage[0] = thisValue;
Value* literalStorage = stackStorage + 1 + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth();
Value* src = m_topCodeBlock->byteCodeBlock()->m_numeralLiteralData.data();
Value* src = byteCodeBlock->m_numeralLiteralData.data();
for (size_t i = 0; i < literalStorageSize; i++) {
literalStorage[i] = src[i];
}
Value resultValue = ByteCodeInterpreter::interpret(codeExecutionState, m_topCodeBlock->byteCodeBlock(), 0, registerFile);
Value resultValue = ByteCodeInterpreter::interpret(codeExecutionState, byteCodeBlock, 0, registerFile);
clearStack<512>();
// we give up program bytecodeblock after first excution for reducing memory usage
@ -529,6 +533,8 @@ Value Script::execute(ExecutionState& state, bool isExecuteOnEvalFunction, bool
// NOTE: eval by direct call
Value Script::executeLocal(ExecutionState& state, Value thisValue, InterpretedCodeBlock* parentCodeBlock, bool isStrictModeOutside, bool isEvalCodeOnFunction)
{
ByteCodeBlock* byteCodeBlock = m_topCodeBlock->byteCodeBlock();
EnvironmentRecord* record;
bool inStrict = false;
if (UNLIKELY(isStrictModeOutside)) {
@ -581,15 +587,15 @@ Value Script::executeLocal(ExecutionState& state, Value thisValue, InterpretedCo
size_t stackStorageSize = m_topCodeBlock->totalStackAllocatedVariableSize();
size_t identifierOnStackCount = m_topCodeBlock->identifierOnStackCount();
size_t literalStorageSize = m_topCodeBlock->byteCodeBlock()->m_numeralLiteralData.size();
Value* registerFile = ALLOCA((m_topCodeBlock->byteCodeBlock()->m_requiredRegisterFileSizeInValueSize + stackStorageSize + literalStorageSize + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth()) * sizeof(Value), Value, state);
size_t literalStorageSize = byteCodeBlock->m_numeralLiteralData.size();
Value* registerFile = ALLOCA((byteCodeBlock->m_requiredRegisterFileSizeInValueSize + stackStorageSize + literalStorageSize + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth()) * sizeof(Value), Value, state);
registerFile[0] = Value();
Value* stackStorage = registerFile + m_topCodeBlock->byteCodeBlock()->m_requiredRegisterFileSizeInValueSize;
Value* stackStorage = registerFile + byteCodeBlock->m_requiredRegisterFileSizeInValueSize;
for (size_t i = 0; i < identifierOnStackCount; i++) {
stackStorage[i] = Value();
}
Value* literalStorage = stackStorage + stackStorageSize + m_topCodeBlock->lexicalBlockStackAllocatedIdentifierMaximumDepth();
Value* src = m_topCodeBlock->byteCodeBlock()->m_numeralLiteralData.data();
Value* src = byteCodeBlock->m_numeralLiteralData.data();
for (size_t i = 0; i < literalStorageSize; i++) {
literalStorage[i] = src[i];
}
@ -620,7 +626,7 @@ Value Script::executeLocal(ExecutionState& state, Value thisValue, InterpretedCo
}
newState.ensureRareData()->m_codeBlock = m_topCodeBlock;
Value resultValue = ByteCodeInterpreter::interpret(&newState, m_topCodeBlock->byteCodeBlock(), 0, registerFile);
Value resultValue = ByteCodeInterpreter::interpret(&newState, byteCodeBlock, 0, registerFile);
clearStack<512>();
return resultValue;