RootUtils::TRandomTLS< T > Class Template Reference

Thread-local TRandom generator. More...

#include <TRandomTLS.h>

Collaboration diagram for RootUtils::TRandomTLS< T >:

Public Member Functions
	TRandomTLS (UInt_t seed=4357)
	Constructor. More...
	~TRandomTLS ()=default
	Destructor. More...
T *	get () const
	Get thread-specific TRandom. More...
T *	operator-> () const
T &	operator* () const

Private Attributes
boost::thread_specific_ptr< T >	m_rand_tls
	Thread-local TRandom. More...
std::atomic< UInt_t >	m_seed
	TRandom seed (incremented for each new instance/thread) More...

Detailed Description

template<class T>
class RootUtils::TRandomTLS< T >

Thread-local TRandom generator.

This class provides a thread-local TRandom instance of type T. For each new instance/thread the seed is incremented to ensure independent random numbers.

Definition at line 29 of file TRandomTLS.h.

Constructor & Destructor Documentation

TRandomTLS()

template<class T >

RootUtils::TRandomTLS< T >::TRandomTLS ( UInt_t  seed = 4357 )

inline

Constructor.

Parameters

seed	The seed of the first TRandom instance. Additional instances are created with the seed incremented by one. If the seed is 0, it will not be incremented as ROOT then uses a time-based seed.

Definition at line 38 of file TRandomTLS.h.

: m_seed(seed) {}

~TRandomTLS()

template<class T >

RootUtils::TRandomTLS< T >::~TRandomTLS ( )

default

Destructor.

Member Function Documentation

get()

template<class T >

T * RootUtils::TRandomTLS< T >::get

inline

Get thread-specific TRandom.

Definition at line 62 of file TRandomTLS.h.

  {
    T* random = m_rand_tls.get();
    if (!random) {
      random = new T(m_seed > 0 ? m_seed++ : 0);
      m_rand_tls.reset(random);
    }
    return random;
  }

operator*()

template<class T >

T& RootUtils::TRandomTLS< T >::operator* ( ) const

inline

Definition at line 46 of file TRandomTLS.h.

{ return *get(); }

operator->()

template<class T >

T* RootUtils::TRandomTLS< T >::operator-> ( ) const

inline

Definition at line 45 of file TRandomTLS.h.

{ return get(); }

Member Data Documentation

m_rand_tls

template<class T >

boost::thread_specific_ptr<T> RootUtils::TRandomTLS< T >::m_rand_tls

mutableprivate

Thread-local TRandom.

Definition at line 50 of file TRandomTLS.h.

m_seed

template<class T >

std::atomic<UInt_t> RootUtils::TRandomTLS< T >::m_seed

mutableprivate

TRandom seed (incremented for each new instance/thread)

Definition at line 53 of file TRandomTLS.h.

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

• TRandomTLS.h