HdInstanceRegistry< VALUE > Class Template Reference

HdInstanceRegistry is a dictionary container of HdInstance. More...

Public Types
typedef HdInstance< VALUE >	InstanceType
typedef InstanceType::Dictionary::const_iterator	const_iterator
	Returns a const iterator being/end of dictionary. More...

Public Member Functions
	HdInstanceRegistry (const HdInstanceRegistry &other)
	Copy constructor. More...
InstanceType	GetInstance (typename InstanceType::KeyType const &key)
	Returns a shared instance for given key. More...
InstanceType	FindInstance (typename InstanceType::KeyType const &key, bool *found)
	Returns a shared instance for a given key only if the key exists in the dictionary. More...
size_t	GarbageCollect (int recycleCount=0)
	Removes unreferenced entries and returns the count of remaining entries. More...
const_iterator	begin () const
const_iterator	end () const
size_t	size () const
void	Invalidate ()

Detailed Description

template<typename VALUE>
class HdInstanceRegistry< VALUE >

HdInstanceRegistry is a dictionary container of HdInstance.

This class is almost just a dictionary from key to value. For cleaning unused entries, it provides GarbageCollect() API. It sweeps all entries in the dictionary and erase unreferenced entries. When HdInstance::ValueType is shared_ptr, it is regarded as unreferenced if the shared_ptr is unique (use_count==1). Note that Key is not involved to determine the lifetime of entries.

Definition at line 146 of file instanceRegistry.h.

Member Typedef Documentation

typedef InstanceType::Dictionary::const_iterator const_iterator

Returns a const iterator being/end of dictionary.

Mainly used for resource auditing.

Definition at line 177 of file instanceRegistry.h.

Constructor & Destructor Documentation

HdInstanceRegistry ( const HdInstanceRegistry< VALUE > &  other )

inline

Copy constructor.

Need as HdInstanceRegistry is placed in a map and mutex is not copy constructable, so can't use default

Definition at line 154 of file instanceRegistry.h.

Member Function Documentation

HdInstance< VALUE > FindInstance	(	typename InstanceType::KeyType const &	key,
		bool *	found
	)

Returns a shared instance for a given key only if the key exists in the dictionary.

Definition at line 225 of file instanceRegistry.h.

size_t GarbageCollect

(

int

recycleCount = 0

)

Removes unreferenced entries and returns the count of remaining entries.

When recycleCount is greater than zero, unreferenced entries will not be removed until GarbageCollect() is called that many more times, i.e. allowing unreferenced entries to be recycled if they are needed again.

Definition at line 248 of file instanceRegistry.h.

HdInstance< VALUE > GetInstance

(

typename InstanceType::KeyType const &

key

)

Returns a shared instance for given key.

Definition at line 202 of file instanceRegistry.h.

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The documentation for this class was generated from the following file:

• pxr/imaging/hd/instanceRegistry.h