Resource managment

Data Structures
class	nrEngine::IResource
	General interface to hold any kind of resources. More...
class	nrEngine::ResourceFactory
	Factory class to built instances of resources. More...
class	nrEngine::ResourceHolder
	Interstage between manager and resources for more efficience and safety. More...
class	nrEngine::IResourceLoader
	Interface for loading/creating resources. More...
class	nrEngine::ResourceManager
	General pointer/handle based resource management system. More...
class	nrEngine::IResourcePtr
	Base untemplated class for resource pointers. More...
class	nrEngine::ResourcePtr< ResType >
	Resource pointer is a smart pointer pointing to the resource. More...
Variables
const int32	nrEngine::NR_RESOURCE_LOCK_STACK = 128

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Detailed Description

nrEngine has support for resource managment. Each resource can be loaded or unloaded at the runtime. There is a class for generic support of resource managment system ResourceManager. This class provides generic functions used for resource reservation/allocation/release. We also provides a possibility to unload the resource at runtime but not to delete it from the memory completly. So the application can still access to it and will get only empty resource back.

Each resource class has to be derived from IResource and provide their own functions for returning an empty resource. ResourcePtr is a class representing smart pointer to any resource. This pointers can be used as normal pointers and will give you transparent access to empty item if this resource is not present in the memory.

So with the help of such subsystem you do not have to check each time you want to use the data if it still exists in the memory. This happens transparent to you and will stay efficient.

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Variable Documentation

const int32 nrEngine::NR_RESOURCE_LOCK_STACK = 128

This constant defines the size of the lock stack. All locking states are stored in the stack, to allow nested lock/unlock calling.

Definition at line 30 of file ResourceHolder.h.

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