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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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38
src/runtime/ScriptFunctionObject.cpp
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@ -69,41 +69,6 @@ ScriptFunctionObject::ScriptFunctionObject(ExecutionState& state, CodeBlock* cod
NEVER_INLINE void ScriptFunctionObject::generateByteCodeBlock(ExecutionState& state)
{
Vector<CodeBlock*, GCUtil::gc_malloc_allocator<CodeBlock*>>& v = state.context()->compiledCodeBlocks();
auto& currentCodeSizeTotal = state.context()->vmInstance()->compiledByteCodeSize();
if (currentCodeSizeTotal > FUNCTION_OBJECT_BYTECODE_SIZE_MAX) {
currentCodeSizeTotal = 0;
std::vector<CodeBlock*, gc_allocator<CodeBlock*>> codeBlocksInCurrentStack;
ExecutionState* es = &state;
while (es) {
FunctionObject* callee = es->resolveCallee();
if (callee && callee->codeBlock()->isInterpretedCodeBlock()) {
InterpretedCodeBlock* cblk = callee->codeBlock()->asInterpretedCodeBlock();
if (cblk->script() && cblk->byteCodeBlock() && std::find(codeBlocksInCurrentStack.begin(), codeBlocksInCurrentStack.end(), cblk) == codeBlocksInCurrentStack.end()) {
codeBlocksInCurrentStack.push_back(cblk);
}
}
es = es->parent();
}
for (size_t i = 0; i < v.size(); i++) {
if (std::find(codeBlocksInCurrentStack.begin(), codeBlocksInCurrentStack.end(), v[i]) == codeBlocksInCurrentStack.end()) {
v[i]->m_byteCodeBlock = nullptr;
}
}
v.clear();
v.resizeWithUninitializedValues(codeBlocksInCurrentStack.size());
size_t stackCodeBlocksSize = codeBlocksInCurrentStack.size();
for (size_t i = 0; i < stackCodeBlocksSize; i++) {
v[i] = codeBlocksInCurrentStack[i];
currentCodeSizeTotal += v[i]->m_byteCodeBlock->memoryAllocatedSize();
}
}
ASSERT(!m_codeBlock->hasCallNativeFunctionCode());
volatile int sp;
@ -116,8 +81,7 @@ NEVER_INLINE void ScriptFunctionObject::generateByteCodeBlock(ExecutionState& st
state.context()->scriptParser().generateFunctionByteCode(state, m_codeBlock->asInterpretedCodeBlock(), stackRemainApprox);
v.pushBack(m_codeBlock);
auto& currentCodeSizeTotal = state.context()->vmInstance()->compiledByteCodeSize();
currentCodeSizeTotal += m_codeBlock->m_byteCodeBlock->memoryAllocatedSize();
}