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/*************************************************************************/
/* rid.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2016 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
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