#pragma once
#include "JSCast.h"
#include "Structure.h"
#include <wtf/MonotonicTime.h>
#include <wtf/StackTrace.h>
namespace JSC {
struct CellProfile {
enum Liveness {
Unknown,
Dead,
Live
};
CellProfile(HeapCell* cell, HeapCell::Kind kind, Liveness liveness)
: m_cell(cell)
, m_kind(kind)
, m_liveness(liveness)
, m_timestamp(MonotonicTime::now())
{
if (isJSCellKind(m_kind) && m_liveness != Dead)
m_className = jsCell()->structure()->classInfo()->className;
}
CellProfile(CellProfile&& other)
: m_cell(other.m_cell)
, m_kind(other.m_kind)
, m_liveness(other.m_liveness)
, m_timestamp(other.m_timestamp)
, m_className(other.m_className)
, m_stackTrace(WTFMove(other.m_stackTrace))
{ }
HeapCell* cell() const { return m_cell; }
JSCell* jsCell() const
{
ASSERT(isJSCell());
return static_cast<JSCell*>(m_cell);
}
bool isJSCell() const { return isJSCellKind(m_kind); }
HeapCell::Kind kind() const { return m_kind; }
bool isLive() const { return m_liveness == Live; }
bool isDead() const { return m_liveness == Dead; }
void setIsLive() { m_liveness = Live; }
void setIsDead() { m_liveness = Dead; }
MonotonicTime timestamp() const { return m_timestamp; }
const char* className() const { return m_className; }
StackTrace* stackTrace() const { return m_stackTrace.get(); }
void setStackTrace(StackTrace* trace) { m_stackTrace = std::unique_ptr<StackTrace>(trace); }
private:
HeapCell* m_cell;
HeapCell::Kind m_kind;
Liveness m_liveness { Unknown };
MonotonicTime m_timestamp;
const char* m_className { nullptr };
std::unique_ptr<StackTrace> m_stackTrace;
};
}