#ifndef JEMALLOC_INTERNAL_EXTENT_TYPES_H
#define JEMALLOC_INTERNAL_EXTENT_TYPES_H

typedef struct extent_s extent_t;
typedef struct extents_s extents_t;

typedef struct extent_util_stats_s extent_util_stats_t;
typedef struct extent_util_stats_verbose_s extent_util_stats_verbose_t;

#define EXTENT_HOOKS_INITIALIZER	NULL

/*
 * When reuse (and split) an active extent, (1U << opt_lg_extent_max_active_fit)
 * is the max ratio between the size of the active extent and the new extent.
 */
#define LG_EXTENT_MAX_ACTIVE_FIT_DEFAULT 6

typedef enum {
	EXTENT_NOT_HEAD,
	EXTENT_IS_HEAD   /* Only relevant for Windows && opt.retain. */
} extent_head_state_t;

#endif /* JEMALLOC_INTERNAL_EXTENT_TYPES_H */