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#ifndef JEMALLOC_INTERNAL_TCACHE_STRUCTS_H
#define JEMALLOC_INTERNAL_TCACHE_STRUCTS_H
#include "jemalloc/internal/cache_bin.h"
#include "jemalloc/internal/ql.h"
#include "jemalloc/internal/sc.h"
#include "jemalloc/internal/ticker.h"
#include "jemalloc/internal/tsd_types.h"
/*
* The tcache state is split into the slow and hot path data. Each has a
* pointer to the other, and the data always comes in pairs. The layout of each
* of them varies in practice; tcache_slow lives in the TSD for the automatic
* tcache, and as part of a dynamic allocation for manual allocations. Keeping
* a pointer to tcache_slow lets us treat these cases uniformly, rather than
* splitting up the tcache [de]allocation code into those paths called with the
* TSD tcache and those called with a manual tcache.
*/
struct tcache_slow_s {
/* Lets us track all the tcaches in an arena. */
ql_elm(tcache_slow_t) link;
/*
* The descriptor lets the arena find our cache bins without seeing the
* tcache definition. This enables arenas to aggregate stats across
* tcaches without having a tcache dependency.
*/
cache_bin_array_descriptor_t cache_bin_array_descriptor;
/* The arena this tcache is associated with. */
arena_t *arena;
/* Next bin to GC. */
szind_t next_gc_bin;
/* For small bins, fill (ncached_max >> lg_fill_div). */
uint8_t lg_fill_div[SC_NBINS];
/* For small bins, whether has been refilled since last GC. */
bool bin_refilled[SC_NBINS];
/*
* For small bins, the number of items we can pretend to flush before
* actually flushing.
*/
uint8_t bin_flush_delay_items[SC_NBINS];
/*
* The start of the allocation containing the dynamic allocation for
* either the cache bins alone, or the cache bin memory as well as this
* tcache_slow_t and its associated tcache_t.
*/
void *dyn_alloc;
/* The associated bins. */
tcache_t *tcache;
};
struct tcache_s {
tcache_slow_t *tcache_slow;
cache_bin_t bins[TCACHE_NBINS_MAX];
};
/* Linkage for list of available (previously used) explicit tcache IDs. */
struct tcaches_s {
union {
tcache_t *tcache;
tcaches_t *next;
};
};
#endif /* JEMALLOC_INTERNAL_TCACHE_STRUCTS_H */
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