malloc.h File Reference

Header file for malloc.c. More...

#include "sys.h"

Go to the source code of this file.

Defines
#define	NULL   0
#define	MAX_BLOCK_SIZE   0x70000000
Typedefs
typedef int	tsize
Functions
void	init_memory ()
	Initialize the memory block structures.
void *	alloc_mem_block (unsigned size)
	Allocate a new free memory block.
void	free_mem_block (void *px)
	Mark the block as free.
void *	malloc (tsize size)
	Thread safe memory allocation.
void	free (void *p)
	Thread safe memory release.
void	memory_leak_error ()
	Call panic when memory leak error.
Variables
unsigned int	_kernel_end

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Detailed Description

Header file for malloc.c.

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Define Documentation

#define MAX_BLOCK_SIZE   0x70000000

Maximum size of memory block

#define NULL   0

NULL definition

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Typedef Documentation

typedef int tsize

Typedef of int variables type

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Function Documentation

void* alloc_mem_block

(

unsigned

size

)

Allocate a new free memory block.

Parameters:

size

- new memory block size

Returns:

pointer to new block or 0 if not enought memory

!!! This routine is NOT thread safe.

void free

(

void *

ptr

)

Thread safe memory release.

Parameters:

ptr

- pointer to memory block

This function only improve free_mem_block() to be thread save

void free_mem_block

(

void *

px

)

Mark the block as free.

Parameters:

px

- pointer to memory block

!!! This routine is NOT thread safe.

void* malloc

(

tsize

size

)

Thread safe memory allocation.

Parameters:

size

- new memory block size

This function only improve alloc_mem_block() to be thread save

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Variable Documentation

unsigned int _kernel_end

A symbol containing the last address of the kernel image. The symbol will be provided by the linker.

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