root/1.8.3/tags/p6/hdrs/mymalloc.h

/* A wrapper header that sets up the proper defines based on
 * options.h's MALLOC_PACKAGE
 */

#ifndef _MYMALLOC_H
#define _MYMALLOC_H

#include "options.h"

#if (MALLOC_PACKAGE == 1)
#define CSRI
#elif (MALLOC_PACKAGE == 2)
#include <stdlib.h>
#define CSRI
#define CSRI_TRACE
#define CSRI_PROFILESIZES
#define CSRI_DEBUG
#include "csrimalloc.h"
#endif

typedef struct slab slab;
slab *slab_create(const char *name, size_t item_size);
void slab_destroy(slab *);
void *slab_malloc(slab *sl, const void *hint);
void slab_free(slab *sl, void *obj);

enum slab_options {
  SLAB_ALLOC_FIRST_FIT, /**< When allocating without a hint (Or when a
                           hint page is full) , use the first page
                           found with room for the object. Default. Mutually exclusive with SLAB_ALLOC_BEST_FIT. */
  SLAB_ALLOC_BEST_FIT, /**< When allocating without a hint (Or when a
                          hint page is full), use the page with the
                          fewest free objects. Mutually exclusive with SLAB_ALLOC_FIRST_FIT. */

  SLAB_ALWAYS_KEEP_A_PAGE, /**< If set to 1, do not delete an empty
                             page if it is the only page allocated for
                             that slab. Defaults to 0. */

  SLAB_HINTLESS_THRESHOLD /**< The number of free objects that must
                              exist in a page for a hintless object to
                              be allocated from it. Defaults to
                              1. Raise for cases where you'll have a
                              lot of allocations using hints and
                              deletions, to improve caching -- e.g.,
                              attributes. */
};

void slab_set_opt(slab *sl, enum slab_options opt, int val);

#endif                          /* _MYMALLOC_H */