#ifndef JEMALLOC_INTERNAL_EXTENT_DSS_H

#define JEMALLOC_INTERNAL_EXTENT_DSS_H

typedef enum {

	dss_prec_disabled  = 0,

	dss_prec_primary   = 1,

	dss_prec_secondary = 2,

	dss_prec_limit     = 3

} dss_prec_t;

#define DSS_PREC_DEFAULT dss_prec_secondary

#define DSS_DEFAULT "secondary"

extern const char *dss_prec_names[];

extern const char *opt_dss;

dss_prec_t extent_dss_prec_get(void);

bool extent_dss_prec_set(dss_prec_t dss_prec);

void *extent_alloc_dss(tsdn_t *tsdn, arena_t *arena, void *new_addr,

    size_t size, size_t alignment, bool *zero, bool *commit);

bool extent_in_dss(void *addr);

bool extent_dss_mergeable(void *addr_a, void *addr_b);

void extent_dss_boot(void);

#endif /* JEMALLOC_INTERNAL_EXTENT_DSS_H */