Memory allocation

Collaboration diagram for Memory allocation:

Classes
class	nanoflann::PooledAllocator

Functions
template<typename T >
T *	nanoflann::allocate (size_t count=1)

Variables
const size_t	nanoflann::WORDSIZE = 16
const size_t	nanoflann::BLOCKSIZE = 8192

Detailed Description

Function Documentation

template<typename T >

T* nanoflann::allocate ( size_t  count = 1 )

inline

Allocates (using C's malloc) a generic type T.

Params: count = number of instances to allocate. Returns: pointer (of type T*) to memory buffer

Definition at line 474 of file nanoflann.hpp.

View newest version in sPHENIX GitHub at line 474 of file nanoflann.hpp

References nanoflann::KNNResultSet< DistanceType, IndexType, CountType >::count, and Acts::UnitConstants::T.

Variable Documentation

const size_t nanoflann::BLOCKSIZE = 8192

Definition at line 496 of file nanoflann.hpp.

View newest version in sPHENIX GitHub at line 496 of file nanoflann.hpp

Referenced by nanoflann::PooledAllocator::malloc().

const size_t nanoflann::WORDSIZE = 16

Pooled storage allocator

The following routines allow for the efficient allocation of storage in small chunks from a specified pool. Rather than allowing each structure to be freed individually, an entire pool of storage is freed at once. This method has two advantages over just using malloc() and free(). First, it is far more efficient for allocating small objects, as there is no overhead for remembering all the information needed to free each object or consolidating fragmented memory. Second, the decision about how long to keep an object is made at the time of allocation, and there is no need to track down all the objects to free them.

Definition at line 495 of file nanoflann.hpp.

View newest version in sPHENIX GitHub at line 495 of file nanoflann.hpp

Referenced by nanoflann::PooledAllocator::malloc().