vmem_sbrk.c File Reference

#include "config.h"
#include <errno.h>
#include <limits.h>
#include <sys/sysmacros.h>
#include <sys/mman.h>
#include <unistd.h>
#include "vmem_base.h"
#include "misc.h"

Classes
struct	sbrk_fail

Macros
#define	MIN_ALLOC   (64*1024)
#define	ALIGNSZ   16
#define	BRKALIGN(x)   (caddr_t)P2ROUNDUP((uintptr_t)(x), ALIGNSZ)

Typedefs
typedef struct sbrk_fail	sbrk_fail_t

Functions
void *	_sbrk_grow_aligned (size_t min_size, size_t low_align, size_t high_align, size_t *actual_size)
void	vmem_sbrk_lockup (void)
void	vmem_sbrk_release (void)
vmem_t *	vmem_sbrk_arena (vmem_alloc_t **a_out, vmem_free_t **f_out)

Variables
size_t	vmem_sbrk_pagesize = 0

Macro Definition Documentation

ALIGNSZ

#define ALIGNSZ   16

Referenced by _sbrk_grow_aligned().

BRKALIGN

#define BRKALIGN

(

x

)

(caddr_t)P2ROUNDUP((uintptr_t)(x), ALIGNSZ)

Referenced by _sbrk_grow_aligned().

MIN_ALLOC

#define MIN_ALLOC   (64*1024)

Typedef Documentation

sbrk_fail_t

typedef struct sbrk_fail sbrk_fail_t

Function Documentation

_sbrk_grow_aligned()

void* _sbrk_grow_aligned	(	size_t	min_size,
		size_t	low_align,
		size_t	high_align,
		size_t *	actual_size
	)

References ALIGNSZ, BRKALIGN, MAX, and P2ROUNDUP.

vmem_sbrk_arena()

vmem_t* vmem_sbrk_arena	(	vmem_alloc_t **	a_out,
		vmem_free_t **	f_out
	)

Referenced by vmem_heap_init().

vmem_sbrk_lockup()

void vmem_sbrk_lockup

(

void

)

References mutex_lock.

vmem_sbrk_release()

void vmem_sbrk_release

(

void

)

References mutex_unlock.

Variable Documentation

vmem_sbrk_pagesize

size_t vmem_sbrk_pagesize = 0