ROOT::Minuit2::StackAllocator Class Reference

StackAllocator controls the memory allocation/deallocation of Minuit.

If MN_NO_THREAD_SAVE is defined, memory is taken from a pre-allocated piece of heap memory which is then used like a stack, otherwise via standard malloc/free. Note that defining MN_NO_THREAD_SAVE makes the code thread- unsave. The gain in performance is mainly for cost-cheap FCN functions.

Definition at line 52 of file StackAllocator.h.

Public Types
enum	{ default_size = 524288 }

Public Member Functions
	StackAllocator ()
	~StackAllocator ()
void *	Allocate (size_t nBytes)
void	Deallocate (void *p)
int	ReadInt (int offset)
void	WriteInt (int offset, int Value)
int	ToInt (void *p)
int	AlignedSize (int nBytes)
void	CheckOverflow (int n)
bool	CheckConsistency ()

Private Attributes
unsigned char *	fStack
int	fStackOffset
int	fBlockCount

#include <Minuit2/StackAllocator.h>

Member Enumeration Documentation

anonymous enum

Enumerator
default_size

Definition at line 57 of file StackAllocator.h.

Constructor & Destructor Documentation

ROOT::Minuit2::StackAllocator::StackAllocator ( )

inline

Definition at line 59 of file StackAllocator.h.

ROOT::Minuit2::StackAllocator::~StackAllocator ( )

inline

Definition at line 68 of file StackAllocator.h.

Member Function Documentation

int ROOT::Minuit2::StackAllocator::AlignedSize ( int  nBytes )

inline

Definition at line 158 of file StackAllocator.h.

Referenced by Allocate().

void* ROOT::Minuit2::StackAllocator::Allocate ( size_t  nBytes )

inline

Definition at line 75 of file StackAllocator.h.

Referenced by ROOT::Minuit2::LASymMatrix::LASymMatrix(), ROOT::Minuit2::MnReferenceCounter::operator new(), ROOT::Minuit2::BasicMinimumSeed::operator new(), ROOT::Minuit2::BasicMinimumParameters::operator new(), ROOT::Minuit2::BasicFunctionGradient::operator new(), ROOT::Minuit2::BasicMinimumState::operator new(), ROOT::Minuit2::BasicMinimumError::operator new(), ROOT::Minuit2::BasicFunctionMinimum::operator new(), ROOT::Minuit2::LAVector::operator=(), and ROOT::Minuit2::LASymMatrix::operator=().

bool ROOT::Minuit2::StackAllocator::CheckConsistency ( )

inline

Definition at line 171 of file StackAllocator.h.

Referenced by Allocate(), and Deallocate().

void ROOT::Minuit2::StackAllocator::CheckOverflow ( int  n )

inline

Definition at line 164 of file StackAllocator.h.

Referenced by Allocate().

void ROOT::Minuit2::StackAllocator::Deallocate ( void *  p )

inline

Definition at line 104 of file StackAllocator.h.

Referenced by ROOT::Minuit2::MnReferenceCounter::operator delete(), ROOT::Minuit2::BasicMinimumSeed::operator delete(), ROOT::Minuit2::BasicMinimumParameters::operator delete(), ROOT::Minuit2::BasicFunctionGradient::operator delete(), ROOT::Minuit2::BasicMinimumState::operator delete(), ROOT::Minuit2::BasicMinimumError::operator delete(), ROOT::Minuit2::BasicFunctionMinimum::operator delete(), ROOT::Minuit2::LASymMatrix::~LASymMatrix(), and ROOT::Minuit2::LAVector::~LAVector().

int ROOT::Minuit2::StackAllocator::ReadInt ( int  offset )

inline

Definition at line 133 of file StackAllocator.h.

Referenced by CheckConsistency(), and Deallocate().

int ROOT::Minuit2::StackAllocator::ToInt ( void *  p )

inline

Definition at line 149 of file StackAllocator.h.

Referenced by Deallocate().

void ROOT::Minuit2::StackAllocator::WriteInt ( int  offset, int  Value  )

inline

Definition at line 141 of file StackAllocator.h.

Referenced by Allocate(), and Deallocate().

Member Data Documentation

int ROOT::Minuit2::StackAllocator::fBlockCount

private

Definition at line 210 of file StackAllocator.h.

Referenced by Allocate(), CheckConsistency(), Deallocate(), and StackAllocator().

unsigned char* ROOT::Minuit2::StackAllocator::fStack

private

Definition at line 207 of file StackAllocator.h.

Referenced by Allocate(), ReadInt(), StackAllocator(), ToInt(), WriteInt(), and ~StackAllocator().

int ROOT::Minuit2::StackAllocator::fStackOffset

private

Definition at line 209 of file StackAllocator.h.

Referenced by Allocate(), CheckConsistency(), CheckOverflow(), Deallocate(), and StackAllocator().

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

• math/minuit2/inc/Minuit2/StackAllocator.h