/home/nef/EnvHaineko/haineko/home/developer/Doduo_sandlabs/BAL/OWBAL/Skeletons/Memory/Arena.t File Reference

Arena description Repository informations :

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#include "BALBase.h"

Namespaces
namespace	OWBAL
Classes
struct	OWBAL::Arena
struct	OWBAL::ArenaPool
Defines
#define	ARENA_ALIGN_MASK   3
#define	ARENA_ALIGN(pool, n)   (((uword)(n) + ARENA_ALIGN_MASK) & ~ARENA_ALIGN_MASK)
#define	INIT_ARENA_POOL(pool, name, size)   InitArenaPool(pool, name, size, ARENA_ALIGN_MASK + 1)
#define	ARENA_ALLOCATE(p, pool, nb)
#define	ARENA_GROW(p, pool, size, incr)
#define	ARENA_MARK(pool)   ((void *) (pool)->current->avail)
#define	UPTRDIFF(p, q)   ((uword)(p) - (uword)(q))
#define	CLEAR_UNUSED(a)
#define	CLEAR_ARENA(a)
#define	ARENA_RELEASE(pool, mark)
#define	ARENA_DESTROY(pool, a, pnext)
Typedefs
typedef unsigned long	OWBAL::uword
Functions
void	OWBAL::InitArenaPool (ArenaPool *pool, const char *name, unsigned int size, unsigned int align)
	Init arena pool.
void	OWBAL::FinishArenaPool (ArenaPool *pool)
	Finish arena pool.
void	OWBAL::FreeArenaPool (ArenaPool *pool)
	Free arena pool.
void *	OWBAL::ArenaAllocate (ArenaPool *pool, unsigned int nb)
	Arena allocate.

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Detailed Description

Arena description Repository informations :

• $URL$
• $Rev$
• $Date$.

---

Define Documentation

#define ARENA_ALIGN_MASK   3

#define ARENA_ALIGN	(	pool,
		n		)	(((uword)(n) + ARENA_ALIGN_MASK) & ~ARENA_ALIGN_MASK)

#define INIT_ARENA_POOL	(	pool,
		name,
		size		)	InitArenaPool(pool, name, size, ARENA_ALIGN_MASK + 1)

#define ARENA_ALLOCATE	(	p,
		pool,
		nb		)

Value:

Arena *_a = (pool)->current; \
        unsigned int _nb = ARENA_ALIGN(pool, nb); \
        uword _p = _a->avail; \
        uword _q = _p + _nb; \
        if (_q > _a->limit) \
            _p = (uword)ArenaAllocate(pool, _nb); \
        else \
            _a->avail = _q; \
        p = (void *)_p;

#define ARENA_GROW	(	p,
		pool,
		size,
		incr		)

Value:

Arena *_a = (pool)->current; \
        unsigned int _incr = ARENA_ALIGN(pool, incr); \
        uword _p = _a->avail; \
        uword _q = _p + _incr; \
        if (_p == (uword)(p) + ARENA_ALIGN(pool, size) && \

#define ARENA_MARK

(

pool

)

((void *) (pool)->current->avail)

#define UPTRDIFF	(	p,
		q		)	((uword)(p) - (uword)(q))

#define CLEAR_UNUSED

(

a

)

#define CLEAR_ARENA

(

a

)

#define ARENA_RELEASE	(	pool,
		mark		)

Value:

char *_m = (char *)(mark); \
         Arena *_a = (pool)->current; \

#define ARENA_DESTROY	(	pool,
		a,
		pnext		)

Value:

if ((pool)->current == (a)) (pool)->current = &(pool)->first; \
         *(pnext) = (a)->next; \
         CLEAR_ARENA(a); \
         fastFree(a); \
         (a) = 0;