FunctionRareData.h [plain text]
#pragma once
#include "InternalFunctionAllocationProfile.h"
#include "JSCast.h"
#include "ObjectAllocationProfile.h"
#include "Watchpoint.h"
namespace JSC {
class JSGlobalObject;
class LLIntOffsetsExtractor;
namespace DFG {
class SpeculativeJIT;
class JITCompiler;
}
class FunctionRareData final : public JSCell {
friend class JIT;
friend class DFG::SpeculativeJIT;
friend class DFG::JITCompiler;
friend class VM;
public:
typedef JSCell Base;
static const unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
static FunctionRareData* create(VM&);
static const bool needsDestruction = true;
static void destroy(JSCell*);
static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
static void visitChildren(JSCell*, SlotVisitor&);
DECLARE_INFO;
static inline ptrdiff_t offsetOfObjectAllocationProfile()
{
return OBJECT_OFFSETOF(FunctionRareData, m_objectAllocationProfile);
}
ObjectAllocationProfile* objectAllocationProfile()
{
return &m_objectAllocationProfile;
}
Structure* objectAllocationStructure() { return m_objectAllocationProfile.structure(); }
JSObject* objectAllocationPrototype() { return m_objectAllocationProfile.prototype(); }
InlineWatchpointSet& allocationProfileWatchpointSet()
{
return m_objectAllocationProfileWatchpoint;
}
void clear(const char* reason);
void initializeObjectAllocationProfile(VM&, JSGlobalObject*, JSObject* prototype, size_t inlineCapacity, JSFunction* constructor);
bool isObjectAllocationProfileInitialized() { return !m_objectAllocationProfile.isNull(); }
Structure* internalFunctionAllocationStructure() { return m_internalFunctionAllocationProfile.structure(); }
Structure* createInternalFunctionAllocationStructureFromBase(VM& vm, JSGlobalObject* globalObject, JSObject* prototype, Structure* baseStructure)
{
return m_internalFunctionAllocationProfile.createAllocationStructureFromBase(vm, globalObject, this, prototype, baseStructure);
}
void clearInternalFunctionAllocationProfile()
{
m_internalFunctionAllocationProfile.clear();
}
Structure* getBoundFunctionStructure() { return m_boundFunctionStructure.get(); }
void setBoundFunctionStructure(VM& vm, Structure* structure) { m_boundFunctionStructure.set(vm, this, structure); }
bool hasReifiedLength() const { return m_hasReifiedLength; }
void setHasReifiedLength() { m_hasReifiedLength = true; }
bool hasReifiedName() const { return m_hasReifiedName; }
void setHasReifiedName() { m_hasReifiedName = true; }
bool hasAllocationProfileClearingWatchpoint() const { return !!m_allocationProfileClearingWatchpoint; }
Watchpoint* createAllocationProfileClearingWatchpoint()
{
RELEASE_ASSERT(!hasAllocationProfileClearingWatchpoint());
m_allocationProfileClearingWatchpoint = std::make_unique<AllocationProfileClearingWatchpoint>(this);
return m_allocationProfileClearingWatchpoint.get();
}
protected:
FunctionRareData(VM&);
~FunctionRareData();
private:
class AllocationProfileClearingWatchpoint : public Watchpoint {
public:
AllocationProfileClearingWatchpoint(FunctionRareData* rareData)
: m_rareData(rareData)
{ }
protected:
void fireInternal(VM&, const FireDetail&) override;
private:
FunctionRareData* m_rareData;
};
friend class LLIntOffsetsExtractor;
ObjectAllocationProfile m_objectAllocationProfile;
InlineWatchpointSet m_objectAllocationProfileWatchpoint;
InternalFunctionAllocationProfile m_internalFunctionAllocationProfile;
WriteBarrier<Structure> m_boundFunctionStructure;
std::unique_ptr<AllocationProfileClearingWatchpoint> m_allocationProfileClearingWatchpoint;
bool m_hasReifiedLength { false };
bool m_hasReifiedName { false };
};
}