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 60 of file MnMatrix.h.

Public Types
enum	{ default_size = 524288 }

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

Private Attributes
int	fBlockCount
unsigned char *	fStack
int	fStackOffset

#include <Minuit2/MnMatrix.h>

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
default_size

Definition at line 64 of file MnMatrix.h.

Constructor & Destructor Documentation

StackAllocator()

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

inline

Definition at line 68 of file MnMatrix.h.

~StackAllocator()

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

inline

Definition at line 78 of file MnMatrix.h.

Member Function Documentation

AlignedSize()

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

inline

Definition at line 176 of file MnMatrix.h.

Allocate()

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

inline

Definition at line 87 of file MnMatrix.h.

CheckConsistency()

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

inline

Definition at line 191 of file MnMatrix.h.

CheckOverflow()

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

inline

Definition at line 183 of file MnMatrix.h.

Deallocate()

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

inline

Definition at line 119 of file MnMatrix.h.

ReadInt()

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

inline

Definition at line 148 of file MnMatrix.h.

ToInt()

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

inline

Definition at line 166 of file MnMatrix.h.

WriteInt()

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

inline

Definition at line 157 of file MnMatrix.h.

Member Data Documentation

fBlockCount

int ROOT::Minuit2::StackAllocator::fBlockCount

private

Definition at line 230 of file MnMatrix.h.

fStack

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

private

Definition at line 227 of file MnMatrix.h.

fStackOffset

int ROOT::Minuit2::StackAllocator::fStackOffset

private

Definition at line 229 of file MnMatrix.h.

Libraries for ROOT::Minuit2::StackAllocator:

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

• math/minuit2/inc/Minuit2/MnMatrix.h