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#ifndef nsAtomTable_h__
#define nsAtomTable_h__
#include "nsIAtom.h"
/**
* A threadsafely-refcounted implementation of nsIAtom. Note that
* AtomImpl objects are sometimes converted into PermanentAtomImpl
* objects using placement new and just overwriting the vtable pointer.
*/
class AtomImpl : public nsIAtom {
public:
AtomImpl();
protected:
// We don't need a virtual destructor here because PermanentAtomImpl
// deletions aren't handled through Release().
~AtomImpl();
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIATOM
virtual PRBool IsPermanent();
void* operator new(size_t size, const nsACString& aString) CPP_THROW_NEW;
void operator delete(void* ptr) {
::operator delete(ptr);
}
// for |#ifdef NS_BUILD_REFCNT_LOGGING| access to reference count
nsrefcnt GetRefCount() { return mRefCnt; }
// Actually more; 0 terminated. This slot is reserved for the
// terminating zero.
char mString[1];
};
/**
* A non-refcounted implementation of nsIAtom.
*/
class PermanentAtomImpl : public AtomImpl {
public:
#ifdef AIX
PermanentAtomImpl() : AtomImpl() {}
#endif
NS_IMETHOD_(nsrefcnt) AddRef();
NS_IMETHOD_(nsrefcnt) Release();
virtual PRBool IsPermanent();
void* operator new(size_t size, const nsACString& aString) CPP_THROW_NEW {
return AtomImpl::operator new(size, aString);
}
void* operator new(size_t size, AtomImpl* aAtom) CPP_THROW_NEW;
};
void NS_PurgeAtomTable();
#endif // nsAtomTable_h__