X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fresourcemanager.h;h=9dcd9b997a56a25214ea691d27f2f616197ae55f;hp=fb4353350f4c2138a1b4a4d1d541b08bf1016f61;hb=13cf58be0e455227e8e5ae418b276a11c7873869;hpb=7db48f2836ec42c6e2dbeff336634a03bc6d7a62

diff --git a/source/resourcemanager.h b/source/resourcemanager.h
index fb435335..9dcd9b99 100644
--- a/source/resourcemanager.h
+++ b/source/resourcemanager.h
@@ -1,6 +1,7 @@
 #ifndef MSP_GL_RESOURCEMANAGER_H_
 #define MSP_GL_RESOURCEMANAGER_H_
 
+#include <msp/core/inttypes.h>
 #include <msp/core/mutex.h>
 #include <msp/core/semaphore.h>
 #include <msp/core/thread.h>
@@ -10,6 +11,17 @@
 namespace Msp {
 namespace GL {
 
+class ResourceObserver;
+
+class resource_load_error: public std::runtime_error
+{
+public:
+	resource_load_error(const std::string &, const std::string &);
+	resource_load_error(const std::string &, const std::exception &);
+	virtual ~resource_load_error() throw() { }
+};
+
+
 class ResourceManager
 {
 public:
@@ -20,57 +32,100 @@ public:
 		LOAD_MANUALLY
 	};
 
-private:
-	struct ManagedResource
+	struct ResourceLocation
 	{
-		Resource *resource;
 		DataFile::Collection *collection;
 		std::string name;
-		IO::Seekable *io;
-		Resource::AsyncLoader *loader;
 
-		ManagedResource(Resource &);
+		ResourceLocation();
+		ResourceLocation(DataFile::Collection &, const std::string &);
 	};
 
-	class LoadingThread: public Thread
+private:
+	struct ManagedResource
 	{
-	public:
 		enum State
 		{
-			IDLE,
-			SYNC_PENDING,
-			BUSY,
+			NOT_LOADED,
+			LOAD_QUEUED,
+			LOADING,
 			LOAD_FINISHED,
-			TERMINATING
+			LOADED,
+			LOAD_ERROR
 		};
 
+		Resource *resource;
+		ResourceLocation location;
+		bool load_priority;
+		IO::Seekable *io;
+		Resource::AsyncLoader *loader;
+		State state;
+		unsigned last_used;
+		UInt64 data_size;
+		std::vector<ResourceObserver *> observers;
+
+		ManagedResource(Resource &);
+
+		void start_loading();
+		bool process(bool);
+		void finish_loading(bool);
+		void finish_loading();
+		void unload();
+
+		void add_observer(ResourceObserver &);
+		void remove_observer(ResourceObserver &);
+	};
+
+	typedef std::list<ManagedResource *> LoadQueue;
+
+	class LoadingThread: public Thread
+	{
 	private:
-		ResourceManager &manager;
 		Semaphore sem;
-		ManagedResource *volatile resource;
-		volatile State state;
+		Mutex queue_mutex;
+		LoadQueue async_queue;
+		LoadQueue sync_queue;
+		unsigned capacity;
+		unsigned size;
+		std::list<resource_load_error> error_queue;
+		Mutex data_size_mutex;
+		UInt64 loaded_data_size;
+		volatile bool done;
 
 	public:
-		LoadingThread(ResourceManager &);
+		LoadingThread();
 
 	private:
 		virtual void main();
 
+		ManagedResource *front(LoadQueue &);
+
+	public:
+		void add_resource(ManagedResource &);
+		void remove_resource(ManagedResource &);
+	private:
+		bool try_remove_resource(ManagedResource &);
 	public:
-		void set_resource(ManagedResource *);
-		ManagedResource *get_resource() const { return resource; }
-		void sync();
-		State get_state() const { return state; }
+		bool sync();
+		bool needs_work() const { return size<capacity; }
+		UInt64 get_and_reset_loaded_data_size();
 
 		void terminate();
 	};
 
-	typedef std::list<ManagedResource *> LoadQueue;
+	typedef std::map<const Resource *, ManagedResource> ResourceMap;
 
 	LoadingPolicy policy;
 	bool async_loads;
-	std::map<const Resource *, ManagedResource> resources;
-	std::list<ManagedResource *> queue;
+	mutable Mutex map_mutex;
+	ResourceMap resources;
+	LoadQueue queue;
+	UInt64 total_data_size;
+	UInt64 size_limit;
+	unsigned frame;
+	unsigned min_retain_frames;
+	unsigned max_retain_frames;
+	unsigned next_unload;
 	LoadingThread thread;
 
 public:
@@ -79,13 +134,41 @@ public:
 
 	void set_loading_policy(LoadingPolicy);
 	void set_async_loads(bool);
+	void set_size_limit(UInt64);
+	void set_min_retain_frames(unsigned);
+	void set_max_retain_frames(unsigned);
 
 	void add_resource(Resource &);
+private:
+	const ManagedResource &get_managed_resource(const Resource &) const;
+	ManagedResource &get_managed_resource(const Resource &);
+public:
+	void *get_data_for_resource(const Resource &r) { return &get_managed_resource(r); }
 	void set_resource_location(Resource &, DataFile::Collection &, const std::string &);
-	void load_resource(const Resource &);
+	void set_resource_location(Resource &, const ResourceLocation &);
+	const ResourceLocation *get_resource_location(const Resource &) const;
+	void load_resource(Resource &);
+	bool is_resource_loaded(const Resource &) const;
+	void resource_used(const Resource &);
 	void remove_resource(Resource &);
 
+	void observe_resource(const Resource &, ResourceObserver &);
+	void unobserve_resource(const Resource &, ResourceObserver &);
+
+	// Deprecated names
+	void watch_resource(const Resource &r, ResourceObserver &o) { observe_resource(r, o); }
+	void unwatch_resource(const Resource &r, ResourceObserver &o) { unobserve_resource(r, o); }
+
 	void tick();
+private:
+	void dispatch_work();
+	void unload_by_age();
+	void unload_by_size();
+public:
+	UInt64 get_total_data_size() const { return total_data_size; }
+
+private:
+	static bool age_order(ManagedResource *, ManagedResource *);
 };
 
 } // namespace GL