#include "BytecodeGenerator.h"
#include "CodeSpecializationKind.h"
-#include "Operations.h"
+#include "JSCInlines.h"
#include "Parser.h"
#include "StrongInlines.h"
#include "UnlinkedCodeBlock.h"
namespace JSC {
const double CodeCacheMap::workingSetTime = 10.0;
-const int64_t CodeCacheMap::globalWorkingSetMaxBytes = 16000000;
-const size_t CodeCacheMap::globalWorkingSetMaxEntries = 2000;
-const unsigned CodeCacheMap::nonGlobalWorkingSetScale = 20;
-const int64_t CodeCacheMap::nonGlobalWorkingSetMaxBytes = CodeCacheMap::globalWorkingSetMaxBytes / CodeCacheMap::nonGlobalWorkingSetScale;
-const size_t CodeCacheMap::nonGlobalWorkingSetMaxEntries = CodeCacheMap::globalWorkingSetMaxEntries / CodeCacheMap::nonGlobalWorkingSetScale;
void CodeCacheMap::pruneSlowCase()
{
}
}
-CodeCache::CodeCache(CodeCacheKind kind)
-: m_sourceCode(kind == GlobalCodeCache ? CodeCacheMap::globalWorkingSetMaxBytes : CodeCacheMap::nonGlobalWorkingSetMaxBytes,
- kind == GlobalCodeCache ? CodeCacheMap::globalWorkingSetMaxEntries : CodeCacheMap::nonGlobalWorkingSetMaxEntries)
+CodeCache::CodeCache()
{
}
};
template <class UnlinkedCodeBlockType, class ExecutableType>
-UnlinkedCodeBlockType* CodeCache::generateBytecode(VM& vm, JSScope* scope, ExecutableType* executable, const SourceCode& source, JSParserStrictness strictness, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
+UnlinkedCodeBlockType* CodeCache::getGlobalCodeBlock(VM& vm, ExecutableType* executable, const SourceCode& source, JSParserBuiltinMode builtinMode,
+ JSParserStrictMode strictMode, ThisTDZMode thisTDZMode, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
{
+ SourceCodeKey key = SourceCodeKey(source, String(), CacheTypes<UnlinkedCodeBlockType>::codeType, builtinMode, strictMode, thisTDZMode);
+ SourceCodeValue* cache = m_sourceCode.findCacheAndUpdateAge(key);
+ bool canCache = debuggerMode == DebuggerOff && profilerMode == ProfilerOff && !vm.typeProfiler() && !vm.controlFlowProfiler();
+ if (cache && canCache) {
+ UnlinkedCodeBlockType* unlinkedCodeBlock = jsCast<UnlinkedCodeBlockType*>(cache->cell.get());
+ unsigned firstLine = source.firstLine() + unlinkedCodeBlock->firstLine();
+ unsigned lineCount = unlinkedCodeBlock->lineCount();
+ unsigned startColumn = unlinkedCodeBlock->startColumn() + source.startColumn();
+ bool endColumnIsOnStartLine = !lineCount;
+ unsigned endColumn = unlinkedCodeBlock->endColumn() + (endColumnIsOnStartLine ? startColumn : 1);
+ executable->recordParse(unlinkedCodeBlock->codeFeatures(), unlinkedCodeBlock->hasCapturedVariables(), firstLine, firstLine + lineCount, startColumn, endColumn);
+ return unlinkedCodeBlock;
+ }
+
typedef typename CacheTypes<UnlinkedCodeBlockType>::RootNode RootNode;
- RefPtr<RootNode> rootNode = parse<RootNode>(&vm, source, 0, Identifier(), strictness, JSParseProgramCode, error);
+ std::unique_ptr<RootNode> rootNode = parse<RootNode>(
+ &vm, source, 0, Identifier(), builtinMode, strictMode,
+ JSParserCodeType::Program, error, 0, ConstructorKind::None, thisTDZMode);
if (!rootNode)
- return 0;
- executable->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo(), rootNode->lastLine(), rootNode->startColumn());
-
- UnlinkedCodeBlockType* unlinkedCode = UnlinkedCodeBlockType::create(&vm, executable->executableInfo());
- unlinkedCode->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo() - source.firstLine(), rootNode->lastLine() - rootNode->lineNo());
- OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(vm, scope, rootNode.get(), unlinkedCode, debuggerMode, profilerMode)));
- error = generator->generate();
- rootNode->destroyData();
- if (error.m_type != ParserError::ErrorNone)
- return 0;
- return unlinkedCode;
-}
+ return nullptr;
-template <class UnlinkedCodeBlockType, class ExecutableType>
-UnlinkedCodeBlockType* CodeCache::getCodeBlock(VM& vm, JSScope* scope, ExecutableType* executable, const SourceCode& source, JSParserStrictness strictness, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
-{
- // We completely skip the cache if we're an eval that isn't at the top of the scope chain.
- if (CacheTypes<UnlinkedCodeBlockType>::codeType == SourceCodeKey::EvalType) {
- if (scope->next() && !scope->isActivationObject())
- return generateBytecode<UnlinkedCodeBlockType, ExecutableType>(vm, scope, executable, source, strictness, debuggerMode, profilerMode, error);
- }
+ unsigned lineCount = rootNode->lastLine() - rootNode->firstLine();
+ unsigned startColumn = rootNode->startColumn() + 1;
+ bool endColumnIsOnStartLine = !lineCount;
+ unsigned unlinkedEndColumn = rootNode->endColumn();
+ unsigned endColumn = unlinkedEndColumn + (endColumnIsOnStartLine ? startColumn : 1);
+ executable->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->firstLine(), rootNode->lastLine(), startColumn, endColumn);
- SourceCodeKey key = SourceCodeKey(source, String(), CacheTypes<UnlinkedCodeBlockType>::codeType, strictness);
- CodeCacheMap::AddResult addResult = m_sourceCode.add(key, SourceCodeValue());
- bool canCache = debuggerMode == DebuggerOff && profilerMode == ProfilerOff;
+ UnlinkedCodeBlockType* unlinkedCodeBlock = UnlinkedCodeBlockType::create(&vm, executable->executableInfo());
+ unlinkedCodeBlock->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->firstLine() - source.firstLine(), lineCount, unlinkedEndColumn);
- if (!addResult.isNewEntry && canCache) {
- UnlinkedCodeBlockType* unlinkedCode = jsCast<UnlinkedCodeBlockType*>(addResult.iterator->value.cell.get());
- unsigned firstLine = source.firstLine() + unlinkedCode->firstLine();
- unsigned startColumn = source.firstLine() ? source.startColumn() : 0;
- executable->recordParse(unlinkedCode->codeFeatures(), unlinkedCode->hasCapturedVariables(), firstLine, firstLine + unlinkedCode->lineCount(), startColumn);
- return unlinkedCode;
- }
- UnlinkedCodeBlockType* unlinkedCode = generateBytecode<UnlinkedCodeBlockType, ExecutableType>(vm, scope, executable, source, strictness, debuggerMode, profilerMode, error);
+ auto generator = std::make_unique<BytecodeGenerator>(vm, rootNode.get(), unlinkedCodeBlock, debuggerMode, profilerMode);
+ error = generator->generate();
+ if (error.isValid())
+ return nullptr;
- if (!canCache || !unlinkedCode) {
- m_sourceCode.remove(addResult.iterator);
- return unlinkedCode;
- }
+ if (!canCache)
+ return unlinkedCodeBlock;
- addResult.iterator->value = SourceCodeValue(vm, unlinkedCode, m_sourceCode.age());
- return unlinkedCode;
+ m_sourceCode.addCache(key, SourceCodeValue(vm, unlinkedCodeBlock, m_sourceCode.age()));
+ return unlinkedCodeBlock;
}
-UnlinkedProgramCodeBlock* CodeCache::getProgramCodeBlock(VM& vm, ProgramExecutable* executable, const SourceCode& source, JSParserStrictness strictness, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
+UnlinkedProgramCodeBlock* CodeCache::getProgramCodeBlock(VM& vm, ProgramExecutable* executable, const SourceCode& source, JSParserBuiltinMode builtinMode, JSParserStrictMode strictMode, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
{
- return getCodeBlock<UnlinkedProgramCodeBlock>(vm, 0, executable, source, strictness, debuggerMode, profilerMode, error);
+ return getGlobalCodeBlock<UnlinkedProgramCodeBlock>(vm, executable, source, builtinMode, strictMode, ThisTDZMode::CheckIfNeeded, debuggerMode, profilerMode, error);
}
-UnlinkedEvalCodeBlock* CodeCache::getEvalCodeBlock(VM& vm, JSScope* scope, EvalExecutable* executable, const SourceCode& source, JSParserStrictness strictness, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
+UnlinkedEvalCodeBlock* CodeCache::getEvalCodeBlock(VM& vm, EvalExecutable* executable, const SourceCode& source, JSParserBuiltinMode builtinMode, JSParserStrictMode strictMode, ThisTDZMode thisTDZMode, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
{
- return getCodeBlock<UnlinkedEvalCodeBlock>(vm, scope, executable, source, strictness, debuggerMode, profilerMode, error);
+ return getGlobalCodeBlock<UnlinkedEvalCodeBlock>(vm, executable, source, builtinMode, strictMode, thisTDZMode, debuggerMode, profilerMode, error);
}
+// FIXME: There's no need to add the function's name to the key here. It's already in the source code.
UnlinkedFunctionExecutable* CodeCache::getFunctionExecutableFromGlobalCode(VM& vm, const Identifier& name, const SourceCode& source, ParserError& error)
{
- SourceCodeKey key = SourceCodeKey(source, name.string(), SourceCodeKey::FunctionType, JSParseNormal);
- CodeCacheMap::AddResult addResult = m_sourceCode.add(key, SourceCodeValue());
- if (!addResult.isNewEntry)
- return jsCast<UnlinkedFunctionExecutable*>(addResult.iterator->value.cell.get());
-
- RefPtr<ProgramNode> program = parse<ProgramNode>(&vm, source, 0, Identifier(), JSParseNormal, JSParseProgramCode, error);
+ SourceCodeKey key = SourceCodeKey(
+ source, name.string(), SourceCodeKey::FunctionType,
+ JSParserBuiltinMode::NotBuiltin,
+ JSParserStrictMode::NotStrict);
+ SourceCodeValue* cache = m_sourceCode.findCacheAndUpdateAge(key);
+ if (cache)
+ return jsCast<UnlinkedFunctionExecutable*>(cache->cell.get());
+
+ JSTextPosition positionBeforeLastNewline;
+ std::unique_ptr<ProgramNode> program = parse<ProgramNode>(
+ &vm, source, 0, Identifier(), JSParserBuiltinMode::NotBuiltin,
+ JSParserStrictMode::NotStrict, JSParserCodeType::Program,
+ error, &positionBeforeLastNewline);
if (!program) {
- ASSERT(error.m_type != ParserError::ErrorNone);
- m_sourceCode.remove(addResult.iterator);
- return 0;
+ RELEASE_ASSERT(error.isValid());
+ return nullptr;
}
- // This function assumes an input string that would result in a single anonymous function expression.
- StatementNode* exprStatement = program->singleStatement();
- ASSERT(exprStatement);
- ASSERT(exprStatement->isExprStatement());
- ExpressionNode* funcExpr = static_cast<ExprStatementNode*>(exprStatement)->expr();
- ASSERT(funcExpr);
- RELEASE_ASSERT(funcExpr->isFuncExprNode());
- FunctionBodyNode* body = static_cast<FuncExprNode*>(funcExpr)->body();
- ASSERT(body);
- ASSERT(body->ident().isNull());
+ // This function assumes an input string that would result in a single function declaration.
+ StatementNode* statement = program->singleStatement();
+ ASSERT(statement);
+ ASSERT(statement->isBlock());
+ if (!statement || !statement->isBlock())
+ return nullptr;
+
+ StatementNode* funcDecl = static_cast<BlockNode*>(statement)->singleStatement();
+ ASSERT(funcDecl);
+ ASSERT(funcDecl->isFuncDeclNode());
+ if (!funcDecl || !funcDecl->isFuncDeclNode())
+ return nullptr;
- UnlinkedFunctionExecutable* functionExecutable = UnlinkedFunctionExecutable::create(&vm, source, body);
+ FunctionBodyNode* body = static_cast<FuncDeclNode*>(funcDecl)->body();
+ ASSERT(body);
+ if (!body)
+ return nullptr;
+
+ body->setEndPosition(positionBeforeLastNewline);
+ UnlinkedFunctionExecutable* functionExecutable = UnlinkedFunctionExecutable::create(&vm, source, body, UnlinkedNormalFunction);
functionExecutable->m_nameValue.set(vm, functionExecutable, jsString(&vm, name.string()));
- addResult.iterator->value = SourceCodeValue(vm, functionExecutable, m_sourceCode.age());
+ m_sourceCode.addCache(key, SourceCodeValue(vm, functionExecutable, m_sourceCode.age()));
return functionExecutable;
}
projects / apple / javascriptcore.git / blobdiff