StructureStubClearingWatchpoint.h [plain text]
#pragma once
#if ENABLE(JIT)
#include "AdaptiveInferredPropertyValueWatchpointBase.h"
#include "ObjectPropertyCondition.h"
#include "Watchpoint.h"
#include <wtf/Bag.h>
#include <wtf/FastMalloc.h>
#include <wtf/Noncopyable.h>
namespace JSC {
class CodeBlock;
class StructureStubInfo;
class WatchpointsOnStructureStubInfo;
class StructureTransitionStructureStubClearingWatchpoint final : public Watchpoint {
WTF_MAKE_NONCOPYABLE(StructureTransitionStructureStubClearingWatchpoint);
WTF_MAKE_FAST_ALLOCATED;
public:
StructureTransitionStructureStubClearingWatchpoint(const ObjectPropertyCondition& key, WatchpointsOnStructureStubInfo& holder)
: Watchpoint(Watchpoint::Type::StructureTransitionStructureStubClearing)
, m_holder(&holder)
, m_key(key)
{
}
void fireInternal(VM&, const FireDetail&);
private:
JSC_WATCHPOINT_FIELD(PackedPtr<WatchpointsOnStructureStubInfo>, m_holder);
JSC_WATCHPOINT_FIELD(ObjectPropertyCondition, m_key);
};
class AdaptiveValueStructureStubClearingWatchpoint final : public AdaptiveInferredPropertyValueWatchpointBase {
using Base = AdaptiveInferredPropertyValueWatchpointBase;
WTF_MAKE_NONCOPYABLE(AdaptiveValueStructureStubClearingWatchpoint);
WTF_MAKE_FAST_ALLOCATED;
void handleFire(VM&, const FireDetail&) final;
public:
AdaptiveValueStructureStubClearingWatchpoint(const ObjectPropertyCondition& key, WatchpointsOnStructureStubInfo& holder)
: Base(key)
, m_holder(&holder)
{
RELEASE_ASSERT(key.condition().kind() == PropertyCondition::Equivalence);
}
private:
PackedPtr<WatchpointsOnStructureStubInfo> m_holder;
};
class WatchpointsOnStructureStubInfo final {
WTF_MAKE_NONCOPYABLE(WatchpointsOnStructureStubInfo);
WTF_MAKE_FAST_ALLOCATED;
public:
WatchpointsOnStructureStubInfo(CodeBlock* codeBlock, StructureStubInfo* stubInfo)
: m_codeBlock(codeBlock)
, m_stubInfo(stubInfo)
{
}
using Node = Variant<StructureTransitionStructureStubClearingWatchpoint, AdaptiveValueStructureStubClearingWatchpoint>;
Node& addWatchpoint(const ObjectPropertyCondition& key);
static void ensureReferenceAndInstallWatchpoint(
std::unique_ptr<WatchpointsOnStructureStubInfo>& holderRef,
CodeBlock*, StructureStubInfo*, const ObjectPropertyCondition& key);
static Watchpoint* ensureReferenceAndAddWatchpoint(
std::unique_ptr<WatchpointsOnStructureStubInfo>& holderRef,
CodeBlock*, StructureStubInfo*);
CodeBlock* codeBlock() const { return m_codeBlock; }
StructureStubInfo* stubInfo() const { return m_stubInfo; }
bool isValid() const;
private:
CodeBlock* m_codeBlock;
StructureStubInfo* m_stubInfo;
Bag<WTF::Variant<StructureTransitionStructureStubClearingWatchpoint, AdaptiveValueStructureStubClearingWatchpoint>> m_watchpoints;
};
}
#endif // ENABLE(JIT)