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kmalloc.h File Reference

Headers for the kernel memory allocators. More...

Go to the source code of this file.

Data Structures
struct	MEM_BLOCK
	A memory block structure. More...
Defines
#define	M_MAGIC   ((dword)"$MB$")
	Magic number to identify a memory block.
#define	M_FREE   0
	Free block.
#define	M_ALLOC   1
	Allocated block.
Typedefs
typedef MEM_BLOCK	mem_block_t
	A memory block structure.
Functions
void	kmalloc_init ()
	Initialize the kernel virtual memory area.
void *	kmalloc (dword size)
void	kfree (void *ptr)
	Frees the memory space pointed by ptr, which must have been returned by a previous call to kmalloc(size_t size). Parameters: ptr  The pointer you want to free.
int	mem_sizeof (void *ptr)
	Return the size of the pointer ptr passed as argument. Parameters: ptr  The pointer you want to know the size. Exceptions: NULL  Invalid pointer ptr. Returns: The size of the pointer ptr passed as argument.
void *	kmemalign (size_t alignment, size_t size)
	Allocate some memory aligned to a boundary. Parameters: alignment  The boundary. size  The size you want to allocate. Exceptions: NULL  Out-of-memory. Returns: A pointer to a memory area aligned to the boundary. The pointer is a aligned_mem_block_t pointer, so if you want to access to the data area of this pointer you must specify the p->start filed. Note: Use kfree(void *ptr) to free the allocated block.
void	dump_memory_map ()
	This is a routine for debug only. It prints all the memory block headers. Note: Prints the result to the current console.

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Detailed Description

Headers for the kernel memory allocators.

Author:

Andrea Righi <drizzt@inwind.it>

Date:

2003-10-24

Note:

Copyright (C) 2003 Andrea Righi

Definition in file kmalloc.h.

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