ExecutableToCodeBlockEdge.h [plain text]
#pragma once
#include "ConcurrentJSLock.h"
#include "IsoSubspace.h"
#include "JSCast.h"
#include "VM.h"
namespace JSC {
class CodeBlock;
class LLIntOffsetsExtractor;
class ExecutableToCodeBlockEdge final : public JSCell {
public:
typedef JSCell Base;
static const unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
template<typename CellType>
static IsoSubspace* subspaceFor(VM& vm)
{
return &vm.executableToCodeBlockEdgeSpace;
}
static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
static ExecutableToCodeBlockEdge* create(VM&, CodeBlock*);
DECLARE_INFO;
CodeBlock* codeBlock() const { return m_codeBlock.get(); }
static void visitChildren(JSCell*, SlotVisitor&);
static void visitOutputConstraints(JSCell*, SlotVisitor&);
void finalizeUnconditionally(VM&);
void activate();
void deactivate();
static CodeBlock* unwrap(ExecutableToCodeBlockEdge* edge)
{
if (!edge)
return nullptr;
return edge->codeBlock();
}
static CodeBlock* deactivateAndUnwrap(ExecutableToCodeBlockEdge* edge);
static ExecutableToCodeBlockEdge* wrap(CodeBlock* codeBlock);
static ExecutableToCodeBlockEdge* wrapAndActivate(CodeBlock* codeBlock);
private:
friend class LLIntOffsetsExtractor;
ExecutableToCodeBlockEdge(VM&, CodeBlock*);
void runConstraint(const ConcurrentJSLocker&, VM&, SlotVisitor&);
WriteBarrier<CodeBlock> m_codeBlock;
bool m_isActive { false };
};
}