alloc.c File Reference

#include <stdarg.h>
#include "types.h"
#include "defs.h"
#include "alloc.h"
#include "irx_imports.h"

Include dependency graph for alloc.c:

Go to the source code of this file.

Data Structures
struct	_heap_mem_header

Macros
#define	MODNAME   "alloc"
#define	DEFAULT_HEAP_SIZE   128 * 1024
#define	DEFAULT_ALIGNMENT   16
#define	ALIGN(x, align)

Typedefs
typedef struct _heap_mem_header	heap_mem_header_t

Functions
	IRX_ID ("Basic alloc library", 1, 1)
static void	alloc_lock ()
static void	alloc_unlock ()
int	_start (int argc, char *argv[])
int	shutdown ()
static void *	alloc_sbrk (size_t increment)
static heap_mem_header_t *	_heap_mem_fit (heap_mem_header_t *head, size_t size)
void *	malloc (size_t size)
void *	realloc (void *ptr, size_t size)
void *	calloc (size_t n, size_t size)
void *	memalign (size_t align, size_t size)
void	free (void *ptr)
void *	__mem_walk_begin ()
void	__mem_walk_read (void *token, u32 *size, void **ptr, int *valid)
void *	__mem_walk_inc (void *token)
int	__mem_walk_end (void *token)

Variables
struct irx_export_table	_exp_alloc
static vs32	alloc_sema = -1
u32	heap_size = DEFAULT_HEAP_SIZE
static u8 *	heap_start
static u8 *	heap_end
static u8 *	_heap_ptr
static void *	__alloc_heap_base = NULL
static heap_mem_header_t *	__alloc_heap_head = NULL
static heap_mem_header_t *	__alloc_heap_tail = NULL

Detailed Description

Basic alloc library

Definition in file alloc.c.

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Data Structure Documentation

_heap_mem_header

struct _heap_mem_header

Definition at line 96 of file alloc.c.

Collaboration diagram for _heap_mem_header:

Data Fields
void *	ptr
size_t	size
struct _heap_mem_header *	prev
struct _heap_mem_header *	next

Macro Definition Documentation

MODNAME

#define MODNAME   "alloc"

Definition at line 25 of file alloc.c.

DEFAULT_HEAP_SIZE

#define DEFAULT_HEAP_SIZE   128 * 1024

Definition at line 32 of file alloc.c.

DEFAULT_ALIGNMENT

#define DEFAULT_ALIGNMENT   16

Use this to set the default malloc() alignment.

Definition at line 89 of file alloc.c.

ALIGN

#define ALIGN	(		x,
			align )

Value:

(((x)+((align)-1))&~((align)-1))

Definition at line 92 of file alloc.c.

Function Documentation

alloc_lock()

static void alloc_lock ( )

static

Definition at line 37 of file alloc.c.

alloc_unlock()

static void alloc_unlock ( )

static

Definition at line 43 of file alloc.c.

_start()

int _start	(	int	argc,
		char *	argv[] )

Definition at line 49 of file alloc.c.

shutdown()

int shutdown

(

void

)

Definition at line 77 of file alloc.c.

alloc_sbrk()

static void * alloc_sbrk ( size_t increment )

static

Definition at line 107 of file alloc.c.

_heap_mem_fit()

static heap_mem_header_t * _heap_mem_fit ( heap_mem_header_t * head, size_t size )

static

Find the lowest block that we can allocate AFTER, returning NULL if there are none.

Definition at line 125 of file alloc.c.

malloc()

void * malloc

(

size_t

size

)

Definition at line 144 of file alloc.c.

realloc()

void * realloc	(	void *	ptr,
		size_t	size )

Definition at line 242 of file alloc.c.

calloc()

void * calloc	(	size_t	n,
		size_t	size )

Definition at line 309 of file alloc.c.

memalign()

void * memalign	(	size_t	align,
		size_t	size )

Definition at line 321 of file alloc.c.

free()

void free

(

void *

ptr

)

Definition at line 372 of file alloc.c.

__mem_walk_begin()

void * __mem_walk_begin

(

)

Definition at line 439 of file alloc.c.

__mem_walk_read()

void __mem_walk_read	(	void *	token,
		u32 *	size,
		void **	ptr,
		int *	valid )

Definition at line 443 of file alloc.c.

__mem_walk_inc()

void * __mem_walk_inc

(

void *

token

)

Definition at line 452 of file alloc.c.

__mem_walk_end()

int __mem_walk_end

(

void *

token

)

Definition at line 458 of file alloc.c.

Variable Documentation

alloc_sema

vs32 alloc_sema = -1

static

Definition at line 30 of file alloc.c.

heap_size

u32 heap_size = DEFAULT_HEAP_SIZE

Definition at line 34 of file alloc.c.

heap_start

u8* heap_start

static

Definition at line 35 of file alloc.c.

heap_end

u8 * heap_end

static

Definition at line 35 of file alloc.c.

_heap_ptr

u8 * _heap_ptr

static

Definition at line 35 of file alloc.c.

__alloc_heap_base

void* __alloc_heap_base = NULL

static

Definition at line 103 of file alloc.c.

__alloc_heap_head

heap_mem_header_t* __alloc_heap_head = NULL

static

Definition at line 104 of file alloc.c.

__alloc_heap_tail

heap_mem_header_t* __alloc_heap_tail = NULL

static

Definition at line 105 of file alloc.c.