BuddyAllocator Class Reference

#include <BuddyAllocator.h>

Public Member Functions
void *	allocate (size_t bytes)
	Allocate memory.
	BuddyAllocator ()
	Empty constructor.
	BuddyAllocator (BuddyAllocator &&)
	BuddyAllocator (const BuddyAllocator &)=delete
	BuddyAllocator (size_t bytes, size_t blockSize=1024, std::function< void *(size_t)> allocator=::malloc, std::function< void(void *)> deallocator=::free, std::function< void(void *, size_t)> zero=[](void *, size_t) {})
	Default constructor.
void	deallocate (void *p, size_t bytes)
	Deallocate memory.
BuddyAllocator &	operator= (BuddyAllocator &&)
BuddyAllocator &	operator= (const BuddyAllocator &)=delete
	~BuddyAllocator ()
	Destructor.

Static Public Member Functions
static constexpr bool	isLIFO ()
	Check if the allocator is Last-In-First-Out (LIFO)

Private Member Functions
void	allocateSize ()
int	blockAlloc (int level)
void	blockFree (int level, int block)
int	getLevel (int block)
size_t	N_blocks () const
size_t	N_bytes () const
void	setLevel (int block, int level)

Private Attributes
std::function< void *(size_t)>	d_allocator
std::function< void(void *)>	d_deallocator
uint8_t	d_log_N
void *	d_memory
uint8_t	d_n
int *	d_N
int *	d_ptr
int8_t *	d_size
std::function< void(void *, size_t)>	d_zero

Detailed Description

This class provides basic routines to allocate/deallocate memory

Definition at line 14 of file BuddyAllocator.h.

Constructor & Destructor Documentation

BuddyAllocator() [1/4]

BuddyAllocator::BuddyAllocator ( size_t  bytes, size_t  blockSize = 1024, std::function< void *(size_t)>  allocator = ::malloc, std::function< void(void *)>  deallocator = ::free, std::function< void(void *, size_t)>  zero = [](void *, size_t) {}  )

explicit

Default constructor.

BuddyAllocator() [2/4]

BuddyAllocator::BuddyAllocator

(

)

Empty constructor.

~BuddyAllocator()

BuddyAllocator::~BuddyAllocator

(

)

Destructor.

BuddyAllocator() [3/4]

BuddyAllocator::BuddyAllocator ( const BuddyAllocator &  )

delete

BuddyAllocator() [4/4]

BuddyAllocator::BuddyAllocator

(

BuddyAllocator &&

)

Member Function Documentation

allocate()

void * BuddyAllocator::allocate

(

size_t

bytes

)

Allocate memory.

allocateSize()

void BuddyAllocator::allocateSize ( )

inlineprivate

Definition at line 53 of file BuddyAllocator.h.

References d_size, and N_blocks().

blockAlloc()

int BuddyAllocator::blockAlloc ( int  level )

private

blockFree()

void BuddyAllocator::blockFree ( int  level, int  block  )

private

deallocate()

void BuddyAllocator::deallocate	(	void *	p,
		size_t	bytes
	)

Deallocate memory.

getLevel()

int BuddyAllocator::getLevel ( int  block )

inlineprivate

Definition at line 55 of file BuddyAllocator.h.

References d_size.

isLIFO()

static constexpr bool BuddyAllocator::isLIFO ( )

inlinestaticconstexpr

Check if the allocator is Last-In-First-Out (LIFO)

Definition at line 44 of file BuddyAllocator.h.

N_blocks()

size_t BuddyAllocator::N_blocks ( ) const

inlineprivate

Definition at line 69 of file BuddyAllocator.h.

References d_n.

Referenced by allocateSize().

N_bytes()

size_t BuddyAllocator::N_bytes ( ) const

inlineprivate

Definition at line 70 of file BuddyAllocator.h.

References d_log_N, and d_n.

operator=() [1/2]

BuddyAllocator & BuddyAllocator::operator=

(

BuddyAllocator &&

)

operator=() [2/2]

BuddyAllocator & BuddyAllocator::operator= ( const BuddyAllocator &  )

delete

setLevel()

void BuddyAllocator::setLevel ( int  block, int  level  )

inlineprivate

Definition at line 54 of file BuddyAllocator.h.

References d_size.

Member Data Documentation

d_allocator

std::function<void *( size_t )> BuddyAllocator::d_allocator

private

Definition at line 64 of file BuddyAllocator.h.

d_deallocator

std::function<void( void * )> BuddyAllocator::d_deallocator

private

Definition at line 65 of file BuddyAllocator.h.

d_log_N

uint8_t BuddyAllocator::d_log_N

private

Definition at line 48 of file BuddyAllocator.h.

Referenced by N_bytes().

d_memory

void* BuddyAllocator::d_memory

private

Definition at line 49 of file BuddyAllocator.h.

d_n

uint8_t BuddyAllocator::d_n

private

Definition at line 47 of file BuddyAllocator.h.

Referenced by N_blocks(), and N_bytes().

d_N

int* BuddyAllocator::d_N

private

Definition at line 58 of file BuddyAllocator.h.

d_ptr

int* BuddyAllocator::d_ptr

private

Definition at line 59 of file BuddyAllocator.h.

d_size

int8_t* BuddyAllocator::d_size

private

Definition at line 52 of file BuddyAllocator.h.

Referenced by allocateSize(), getLevel(), and setLevel().

d_zero

std::function<void( void *, size_t )> BuddyAllocator::d_zero

private

Definition at line 66 of file BuddyAllocator.h.

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

• src/utils/BuddyAllocator.h