/*************************************************************************/ /* rid.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #ifndef RID_H #define RID_H #include "core/list.h" #include "core/os/memory.h" #include "core/safe_refcount.h" #include "core/set.h" #include "core/typedefs.h" /** @author Juan Linietsky <reduzio@gmail.com> */ class RID_OwnerBase; class RID_Data { friend class RID_OwnerBase; #ifndef DEBUG_ENABLED RID_OwnerBase *_owner; #endif uint32_t _id; public: _FORCE_INLINE_ uint32_t get_id() const { return _id; } virtual ~RID_Data(); }; class RID { friend class RID_OwnerBase; mutable RID_Data *_data; public: _FORCE_INLINE_ RID_Data *get_data() const { return _data; } _FORCE_INLINE_ bool operator==(const RID &p_rid) const { return _data == p_rid._data; } _FORCE_INLINE_ bool operator<(const RID &p_rid) const { return _data < p_rid._data; } _FORCE_INLINE_ bool operator<=(const RID &p_rid) const { return _data <= p_rid._data; } _FORCE_INLINE_ bool operator>(const RID &p_rid) const { return _data > p_rid._data; } _FORCE_INLINE_ bool operator!=(const RID &p_rid) const { return _data != p_rid._data; } _FORCE_INLINE_ bool is_valid() const { return _data != NULL; } _FORCE_INLINE_ uint32_t get_id() const { return _data ? _data->get_id() : 0; } _FORCE_INLINE_ RID() { _data = NULL; } }; class RID_OwnerBase { protected: static SafeRefCount refcount; _FORCE_INLINE_ void _set_data(RID &p_rid, RID_Data *p_data) { p_rid._data = p_data; refcount.ref(); p_data->_id = refcount.get(); #ifndef DEBUG_ENABLED p_data->_owner = this; #endif } #ifndef DEBUG_ENABLED _FORCE_INLINE_ bool _is_owner(const RID &p_rid) const { return this == p_rid._data->_owner; } _FORCE_INLINE_ void _remove_owner(RID &p_rid) { p_rid._data->_owner = NULL; } #endif public: virtual void get_owned_list(List<RID> *p_owned) = 0; static void init_rid(); virtual ~RID_OwnerBase() {} }; template <class T> class RID_Owner : public RID_OwnerBase { public: #ifdef DEBUG_ENABLED mutable Set<RID_Data *> id_map; #endif public: _FORCE_INLINE_ RID make_rid(T *p_data) { RID rid; _set_data(rid, p_data); #ifdef DEBUG_ENABLED id_map.insert(p_data); #endif return rid; } _FORCE_INLINE_ T *get(const RID &p_rid) { #ifdef DEBUG_ENABLED ERR_FAIL_COND_V(!p_rid.is_valid(), NULL); ERR_FAIL_COND_V(!id_map.has(p_rid.get_data()), NULL); #endif return static_cast<T *>(p_rid.get_data()); } _FORCE_INLINE_ T *getornull(const RID &p_rid) { #ifdef DEBUG_ENABLED if (p_rid.get_data()) { ERR_FAIL_COND_V(!id_map.has(p_rid.get_data()), NULL); } #endif return static_cast<T *>(p_rid.get_data()); } _FORCE_INLINE_ T *getptr(const RID &p_rid) { return static_cast<T *>(p_rid.get_data()); } _FORCE_INLINE_ bool owns(const RID &p_rid) const { if (p_rid.get_data() == NULL) return false; #ifdef DEBUG_ENABLED return id_map.has(p_rid.get_data()); #else return _is_owner(p_rid); #endif } void free(RID p_rid) { #ifdef DEBUG_ENABLED id_map.erase(p_rid.get_data()); #else _remove_owner(p_rid); #endif } void get_owned_list(List<RID> *p_owned) { #ifdef DEBUG_ENABLED for (typename Set<RID_Data *>::Element *E = id_map.front(); E; E = E->next()) { RID r; _set_data(r, static_cast<T *>(E->get())); p_owned->push_back(r); } #endif } }; #endif