WebSVN – gelsvn – Diff – /branches/vc2005beta-branch/src/Util/ResourceManager.h



	{
		typedef ResourceRecord<RES> RR;
		typedef std::list<RR> RRList;
		typedef typename RRList::iterator RRListIter;
 
		static RRListIter get_null_rrlist_iter()
		{
			static RRList l;
			return l.end();
		}
 
#define NULL_RRLIST_ITER ResourcePtr<RES>::get_null_rrlist_iter() 		
 
		friend class ResourceManager<RES>;
 
	private:		
		RRListIter rr;
		RES* res;
	
		/** Explicit constructor with value. The constructor can only be called
				by a friend, i.e. the resource manager. */
		explicit ResourcePtr(const RRListIter& _rr): rr(_rr), res(0)
		{
			if(rr != NULL_RRLIST_ITER)
				{
					rr->increment_usage();
					res = rr->get_ptr();
				}
		}
 
		void decrement_usage();
	
	public:
	
		ResourcePtr(): rr(NULL_RRLIST_ITER), res(0) {}
	
		ResourcePtr(const ResourcePtr& r2): rr(r2.rr), res(0)
		{
			if(rr != NULL_RRLIST_ITER)
				{
					rr->increment_usage();
					res = rr->get_ptr();
				}
		}

		const ResourcePtr& operator=(const ResourcePtr& r2) 
		{
			// Guard against self-assignment
			if (r2.rr != this->rr)
				{
					if(rr != NULL_RRLIST_ITER)	decrement_usage();
 
					rr  = r2.rr;
					res = 0;
 
					if(rr != NULL_RRLIST_ITER)
						{
							res = rr->get_ptr();
							rr->increment_usage();
						}
				}

 
		~ResourcePtr() {decrement_usage();}
 
		RES& operator*() const 
		{
			assert(rr != NULL_RRLIST_ITER);
			assert(res != 0);
			return *res;
		}
 
		RES* const operator->() const 
		{
			assert(rr != NULL_RRLIST_ITER);
			assert(res !=0);
			return res;
		}
 
		RES* const get_raw_ptr() const 
		{
			assert(rr != NULL_RRLIST_ITER);
			assert(res != 0);
			return res;
		}
 
		int usage() const
		{
			if(rr != NULL_RRLIST_ITER)
				return rr->get_usage();
			return -1;
		}
 
		bool is_valid() const {return rr != NULL_RRLIST_ITER;}
 
		void relinquish_resource()
		{
			ResourcePtr p;
			*this = p;

		ResourcePtr<RES> get_resource_ptr(const std::string& str)
		{
			for(RRListIter i = resources.begin(); i != resources.end(); ++i)
				if((*i).get_name() == str) 
					return ResourcePtr<RES>(i);
			return ResourcePtr<RES>(NULL_RRLIST_ITER);
		}
 
		/** Add a resource with name passed as first argument and a pointer
				passed as 2nd argument. A ResourcePtr to the just inserted
				element is returned. */
		ResourcePtr<RES> register_resource(const std::string& str, 
																			 RES* res, bool static_resource)
		{
			for(RRListIter i = resources.begin(); i != resources.end(); ++i)
				if(i->get_name() == str)
					return (ResourcePtr<RES>(NULL_RRLIST_ITER));
 
			resources.push_front(RR(str, res, static_resource));
			ResourcePtr<RES> ptr = ResourcePtr<RES>(resources.begin());
			return ptr;
		}

	};
 
	template<class RES>
	inline void ResourcePtr<RES>::decrement_usage()
	{
		assert( (rr == NULL_RRLIST_ITER) || (res != 0));
		if(rr != NULL_RRLIST_ITER)
			{
				rr->decrement_usage();
				if(rr->get_usage() == 0 && (rr->get_flags()&REMOVE_WHEN_UNUSED))
					{
						ResourceManager<RES>& man = ResourceManager<RES>::get_instance();

Rev 119	Rev 126
Line 127...	Line 127...
127	`{`	127	`{`
128	`typedef ResourceRecord<RES> RR;`	128	`typedef ResourceRecord<RES> RR;`
129	`typedef std::list<RR> RRList;`	129	`typedef std::list<RR> RRList;`
130	`typedef typename RRList::iterator RRListIter;`	130	`typedef typename RRList::iterator RRListIter;`
131		131
-		132	`static RRListIter get_null_rrlist_iter()`
-		133	`{`
-		134	`static RRList l;`
-		135	`return l.end();`
-		136	`}`
-		137
-		138	`#define NULL_RRLIST_ITER ResourcePtr<RES>::get_null_rrlist_iter()`
-		139
132	`friend class ResourceManager<RES>;`	140	`friend class ResourceManager<RES>;`
133		141
134	`private:`	142	`private:`
135	`RRListIter rr;`	143	`RRListIter rr;`
136	`RES* res;`	144	`RES* res;`
137		145
138	`/** Explicit constructor with value. The constructor can only be called`	146	`/** Explicit constructor with value. The constructor can only be called`
139	`by a friend, i.e. the resource manager. */`	147	`by a friend, i.e. the resource manager. */`
140	`explicit ResourcePtr(const RRListIter& _rr): rr(_rr), res(0)`	148	`explicit ResourcePtr(const RRListIter& _rr): rr(_rr), res(0)`
141	`{`	149	`{`
142	`if(rr != 0)`	150	`if(rr != NULL_RRLIST_ITER)`
143	`{`	151	`{`
144	`rr->increment_usage();`	152	`rr->increment_usage();`
145	`res = rr->get_ptr();`	153	`res = rr->get_ptr();`
146	`}`	154	`}`
147	`}`	155	`}`
148		156
149	`void decrement_usage();`	157	`void decrement_usage();`
150		158
151	`public:`	159	`public:`
152		160
153	`ResourcePtr(): rr(0), res(0) {}`	161	`ResourcePtr(): rr(NULL_RRLIST_ITER), res(0) {}`
154		162
155	`ResourcePtr(const ResourcePtr& r2): rr(r2.rr), res(0)`	163	`ResourcePtr(const ResourcePtr& r2): rr(r2.rr), res(0)`
156	`{`	164	`{`
157	`if(rr != 0)`	165	`if(rr != NULL_RRLIST_ITER)`
158	`{`	166	`{`
159	`rr->increment_usage();`	167	`rr->increment_usage();`
160	`res = rr->get_ptr();`	168	`res = rr->get_ptr();`
161	`}`	169	`}`
162	`}`	170	`}`
Line 164...	Line 172...
164	`const ResourcePtr& operator=(const ResourcePtr& r2)`	172	`const ResourcePtr& operator=(const ResourcePtr& r2)`
165	`{`	173	`{`
166	`// Guard against self-assignment`	174	`// Guard against self-assignment`
167	`if (r2.rr != this->rr)`	175	`if (r2.rr != this->rr)`
168	`{`	176	`{`
169	`if(rr != 0) decrement_usage();`	177	`if(rr != NULL_RRLIST_ITER) decrement_usage();`
170		178
171	`rr = r2.rr;`	179	`rr = r2.rr;`
172	`res = 0;`	180	`res = 0;`
173		181
174	`if(rr != 0)`	182	`if(rr != NULL_RRLIST_ITER)`
175	`{`	183	`{`
176	`res = rr->get_ptr();`	184	`res = rr->get_ptr();`
177	`rr->increment_usage();`	185	`rr->increment_usage();`
178	`}`	186	`}`
179	`}`	187	`}`
Line 182...	Line 190...
182		190
183	`~ResourcePtr() {decrement_usage();}`	191	`~ResourcePtr() {decrement_usage();}`
184		192
185	`RES& operator*() const`	193	`RES& operator*() const`
186	`{`	194	`{`
187	`assert(rr != 0);`	195	`assert(rr != NULL_RRLIST_ITER);`
188	`assert(res != 0);`	196	`assert(res != 0);`
189	`return *res;`	197	`return *res;`
190	`}`	198	`}`
191		199
192	`RES* const operator->() const`	200	`RES* const operator->() const`
193	`{`	201	`{`
194	`assert(rr != 0);`	202	`assert(rr != NULL_RRLIST_ITER);`
195	`assert(res !=0);`	203	`assert(res !=0);`
196	`return res;`	204	`return res;`
197	`}`	205	`}`
198		206
199	`RES* const get_raw_ptr() const`	207	`RES* const get_raw_ptr() const`
200	`{`	208	`{`
201	`assert(rr != 0);`	209	`assert(rr != NULL_RRLIST_ITER);`
202	`assert(res != 0);`	210	`assert(res != 0);`
203	`return res;`	211	`return res;`
204	`}`	212	`}`
205		213
206	`int usage() const`	214	`int usage() const`
207	`{`	215	`{`
208	`if(rr != 0)`	216	`if(rr != NULL_RRLIST_ITER)`
209	`return rr->get_usage();`	217	`return rr->get_usage();`
210	`return -1;`	218	`return -1;`
211	`}`	219	`}`
212		220
213	`bool is_valid() const {return rr != 0;}`	221	`bool is_valid() const {return rr != NULL_RRLIST_ITER;}`
214		222
215	`void relinquish_resource()`	223	`void relinquish_resource()`
216	`{`	224	`{`
217	`ResourcePtr p;`	225	`ResourcePtr p;`
218	`*this = p;`	226	`*this = p;`
Line 310...	Line 318...
310	`ResourcePtr<RES> get_resource_ptr(const std::string& str)`	318	`ResourcePtr<RES> get_resource_ptr(const std::string& str)`
311	`{`	319	`{`
312	`for(RRListIter i = resources.begin(); i != resources.end(); ++i)`	320	`for(RRListIter i = resources.begin(); i != resources.end(); ++i)`
313	`if((*i).get_name() == str)`	321	`if((*i).get_name() == str)`
314	`return ResourcePtr<RES>(i);`	322	`return ResourcePtr<RES>(i);`
315	`return ResourcePtr<RES>(0);`	323	`return ResourcePtr<RES>(NULL_RRLIST_ITER);`
316	`}`	324	`}`
317		325
318	`/** Add a resource with name passed as first argument and a pointer`	326	`/** Add a resource with name passed as first argument and a pointer`
319	`passed as 2nd argument. A ResourcePtr to the just inserted`	327	`passed as 2nd argument. A ResourcePtr to the just inserted`
320	`element is returned. */`	328	`element is returned. */`
321	`ResourcePtr<RES> register_resource(const std::string& str,`	329	`ResourcePtr<RES> register_resource(const std::string& str,`
322	`RES* res, bool static_resource)`	330	`RES* res, bool static_resource)`
323	`{`	331	`{`
324	`for(RRListIter i = resources.begin(); i != resources.end(); ++i)`	332	`for(RRListIter i = resources.begin(); i != resources.end(); ++i)`
325	`if(i->get_name() == str)`	333	`if(i->get_name() == str)`
326	`return (ResourcePtr<RES>(0));`	334	`return (ResourcePtr<RES>(NULL_RRLIST_ITER));`
327		335
328	`resources.push_front(RR(str, res, static_resource));`	336	`resources.push_front(RR(str, res, static_resource));`
329	`ResourcePtr<RES> ptr = ResourcePtr<RES>(resources.begin());`	337	`ResourcePtr<RES> ptr = ResourcePtr<RES>(resources.begin());`
330	`return ptr;`	338	`return ptr;`
331	`}`	339	`}`
Line 340...	Line 348...
340	`};`	348	`};`
341		349
342	`template<class RES>`	350	`template<class RES>`
343	`inline void ResourcePtr<RES>::decrement_usage()`	351	`inline void ResourcePtr<RES>::decrement_usage()`
344	`{`	352	`{`
345	`assert( (rr == 0) \|\| (res != 0));`	353	`assert( (rr == NULL_RRLIST_ITER) \|\| (res != 0));`
346	`if(rr != 0)`	354	`if(rr != NULL_RRLIST_ITER)`
347	`{`	355	`{`
348	`rr->decrement_usage();`	356	`rr->decrement_usage();`
349	`if(rr->get_usage() == 0 && (rr->get_flags()&REMOVE_WHEN_UNUSED))`	357	`if(rr->get_usage() == 0 && (rr->get_flags()&REMOVE_WHEN_UNUSED))`
350	`{`	358	`{`
351	`ResourceManager<RES>& man = ResourceManager<RES>::get_instance();`	359	`ResourceManager<RES>& man = ResourceManager<RES>::get_instance();`

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(root)/branches/vc2005beta-branch/src/Util/ResourceManager.h – Rev 119 → 126