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Diffstat (limited to 'core/rid.h')
| -rw-r--r-- | core/rid.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/core/rid.h b/core/rid.h new file mode 100644 index 0000000000..4d4e11c251 --- /dev/null +++ b/core/rid.h @@ -0,0 +1,216 @@ +/*************************************************************************/ +/* rid.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* 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 "safe_refcount.h" +#include "typedefs.h" +#include "os/memory.h" +#include "hash_map.h" +#include "list.h" + +/** + @author Juan Linietsky <reduzio@gmail.com> +*/ + +class RID_OwnerBase; + +typedef uint32_t ID; + +class RID { +friend class RID_OwnerBase; + ID _id; + RID_OwnerBase *owner; +public: + + _FORCE_INLINE_ ID get_id() const { return _id; } + bool operator==(const RID& p_rid) const { + + return _id==p_rid._id; + } + _FORCE_INLINE_ bool operator<(const RID& p_rid) const { + + return _id < p_rid._id; + } + _FORCE_INLINE_ bool operator<=(const RID& p_rid) const { + + return _id <= p_rid._id; + } + _FORCE_INLINE_ bool operator>(const RID& p_rid) const { + + return _id > p_rid._id; + } + bool operator!=(const RID& p_rid) const { + + return _id!=p_rid._id; + } + _FORCE_INLINE_ bool is_valid() const { return _id>0; } + + operator const void*() const { + return is_valid() ? this : 0; + }; + + _FORCE_INLINE_ RID() { + _id = 0; + owner=0; + } +}; + + +class RID_OwnerBase { +protected: +friend class RID; + void set_id(RID& p_rid, ID p_id) const { p_rid._id=p_id; } + void set_ownage(RID& p_rid) const { p_rid.owner=const_cast<RID_OwnerBase*>(this); } + ID new_ID(); +public: + + virtual bool owns(const RID& p_rid) const=0; + virtual void get_owned_list(List<RID> *p_owned) const=0; + + static void init_rid(); + + virtual ~RID_OwnerBase() {} +}; + +template<class T,bool thread_safe=false> +class RID_Owner : public RID_OwnerBase { +public: + + typedef void (*ReleaseNotifyFunc)(void*user,T *p_data); +private: + + Mutex *mutex; + mutable HashMap<ID,T*> id_map; + +public: + + RID make_rid(T * p_data) { + + if (thread_safe) { + mutex->lock(); + } + + ID id = new_ID(); + id_map[id]=p_data; + RID rid; + set_id(rid,id); + set_ownage(rid); + + if (thread_safe) { + mutex->unlock(); + } + + return rid; + } + + _FORCE_INLINE_ T * get(const RID& p_rid) { + + if (thread_safe) { + mutex->lock(); + } + + T**elem = id_map.getptr(p_rid.get_id()); + + if (thread_safe) { + mutex->unlock(); + } + + ERR_FAIL_COND_V(!elem,NULL); + + return *elem; + + } + + virtual bool owns(const RID& p_rid) const { + + if (thread_safe) { + mutex->lock(); + } + + T**elem = id_map.getptr(p_rid.get_id()); + + if (thread_safe) { + mutex->lock(); + } + + return elem!=NULL; + } + + virtual void free(RID p_rid) { + + if (thread_safe) { + mutex->lock(); + } + ERR_FAIL_COND(!owns(p_rid)); + id_map.erase(p_rid.get_id()); + } + virtual void get_owned_list(List<RID> *p_owned) const { + + if (thread_safe) { + mutex->lock(); + } + + const ID*id=NULL; + while((id=id_map.next(id))) { + + RID rid; + set_id(rid,*id); + set_ownage(rid); + p_owned->push_back(rid); + + } + + if (thread_safe) { + mutex->lock(); + } + + } + RID_Owner() { + + if (thread_safe) { + + mutex = Mutex::create(); + } + + } + + + ~RID_Owner() { + + if (thread_safe) { + + memdelete(mutex); + } + } +}; + + +#endif |