24 #ifndef PXR_BASE_TF_STATIC_DATA_H
25 #define PXR_BASE_TF_STATIC_DATA_H
33 #include "pxr/base/tf/preprocessorUtilsLite.h"
37 PXR_NAMESPACE_OPEN_SCOPE
108 struct Tf_StaticDataDefaultFactory {
109 static T *New() {
return new T; }
112 template <
class T,
class Factory = Tf_StaticDataDefaultFactory<T> >
127 return ARCH_LIKELY(p) ? p : _TryToCreateData();
135 T *_TryToCreateData()
const {
137 T *tmp = Factory::New();
141 if (ARCH_LIKELY(_data.compare_exchange_strong(n, tmp)))
149 mutable std::atomic<T *> _data;
186 #define TF_MAKE_STATIC_DATA(Type, Name) \
187 static void TF_PP_CAT(Name,_Tf_StaticDataFactoryImpl)( \
188 TF_PP_EAT_PARENS(Type) *); \
190 struct TF_PP_CAT(Name,_Tf_StaticDataFactory) { \
191 static TF_PP_EAT_PARENS(Type) *New() { \
192 auto *p = new TF_PP_EAT_PARENS(Type); \
193 TF_PP_CAT(Name,_Tf_StaticDataFactoryImpl)(p); \
198 static TfStaticData< \
199 TF_PP_EAT_PARENS(Type), TF_PP_CAT(Name,_Tf_StaticDataFactory)> Name; \
200 static void TF_PP_CAT(Name,_Tf_StaticDataFactoryImpl)( \
201 TF_PP_EAT_PARENS(Type) *Name)
203 PXR_NAMESPACE_CLOSE_SCOPE
bool IsInitialized() const
Return true if the underlying data object is created and initialized.
T * operator->() const
Return a pointer to the underlying data object.
Create or return a previously created object instance of global data.
T * Get() const
Return a pointer to the underlying object, creating and initializing it if necessary.
T & operator*() const
Member lookup.