mm.c File Reference

#include "mm.h"

Functions
void	mmDumpMemInfo (const struct mem_block *heap)
	For debuging purpose.
struct mem_block *	mmInit (unsigned ofs, unsigned size)
	input: total size in bytes return: a heap pointer if OK, NULL if error
static struct mem_block *	SliceBlock (struct mem_block *p, unsigned startofs, unsigned size, unsigned reserved, unsigned alignment)
struct mem_block *	mmAllocMem (struct mem_block *heap, unsigned size, unsigned align2, unsigned startSearch)
	Allocate 'size' bytes with 2^align2 bytes alignment, restrict the search to free memory after 'startSearch' depth and back buffers should be in different 4mb banks to get better page hits if possible input: size = size of block align2 = 2^align2 bytes alignment startSearch = linear offset from start of heap to begin search return: pointer to the allocated block, 0 if error.
struct mem_block *	mmFindBlock (struct mem_block *heap, unsigned start)
	Free block starts at offset input: pointer to a heap, start offset return: pointer to a block.
static INLINE int	Join2Blocks (struct mem_block *p)
int	mmFreeMem (struct mem_block *b)
	Free block starts at offset input: pointer to a block return: 0 if OK, -1 if error.
void	mmDestroy (struct mem_block *heap)
	destroy MM

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Function Documentation

static INLINE int Join2Blocks

(

struct mem_block *

p

)

[static]

struct mem_block* mmAllocMem	(	struct mem_block *	heap,
		unsigned	size,
		unsigned	align2,
		unsigned	startSearch
	)			[read]

Allocate 'size' bytes with 2^align2 bytes alignment, restrict the search to free memory after 'startSearch' depth and back buffers should be in different 4mb banks to get better page hits if possible input: size = size of block align2 = 2^align2 bytes alignment startSearch = linear offset from start of heap to begin search return: pointer to the allocated block, 0 if error.

void mmDestroy

(

struct mem_block *

heap

)

destroy MM

void mmDumpMemInfo

(

const struct mem_block *

heap

)

For debuging purpose.

struct mem_block* mmFindBlock	(	struct mem_block *	heap,
		unsigned	start
	)			[read]

Free block starts at offset input: pointer to a heap, start offset return: pointer to a block.

int mmFreeMem

(

struct mem_block *

b

)

Free block starts at offset input: pointer to a block return: 0 if OK, -1 if error.

struct mem_block* mmInit	(	unsigned	ofs,
		unsigned	size
	)			[read]

input: total size in bytes return: a heap pointer if OK, NULL if error

static struct mem_block* SliceBlock	(	struct mem_block *	p,
		unsigned	startofs,
		unsigned	size,
		unsigned	reserved,
		unsigned	alignment
	)			[static, read]

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