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diff --git a/deps/jemalloc/include/jemalloc/internal/arena_structs.h b/deps/jemalloc/include/jemalloc/internal/arena_structs.h
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+#ifndef JEMALLOC_INTERNAL_ARENA_STRUCTS_H
+#define JEMALLOC_INTERNAL_ARENA_STRUCTS_H
+
+#include "jemalloc/internal/arena_stats.h"
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/bin.h"
+#include "jemalloc/internal/bitmap.h"
+#include "jemalloc/internal/counter.h"
+#include "jemalloc/internal/ecache.h"
+#include "jemalloc/internal/edata_cache.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/nstime.h"
+#include "jemalloc/internal/pa.h"
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/ticker.h"
+
+struct arena_s {
+ /*
+ * Number of threads currently assigned to this arena. Each thread has
+ * two distinct assignments, one for application-serving allocation, and
+ * the other for internal metadata allocation. Internal metadata must
+ * not be allocated from arenas explicitly created via the arenas.create
+ * mallctl, because the arena.<i>.reset mallctl indiscriminately
+ * discards all allocations for the affected arena.
+ *
+ * 0: Application allocation.
+ * 1: Internal metadata allocation.
+ *
+ * Synchronization: atomic.
+ */
+ atomic_u_t nthreads[2];
+
+ /* Next bin shard for binding new threads. Synchronization: atomic. */
+ atomic_u_t binshard_next;
+
+ /*
+ * When percpu_arena is enabled, to amortize the cost of reading /
+ * updating the current CPU id, track the most recent thread accessing
+ * this arena, and only read CPU if there is a mismatch.
+ */
+ tsdn_t *last_thd;
+
+ /* Synchronization: internal. */
+ arena_stats_t stats;
+
+ /*
+ * Lists of tcaches and cache_bin_array_descriptors for extant threads
+ * associated with this arena. Stats from these are merged
+ * incrementally, and at exit if opt_stats_print is enabled.
+ *
+ * Synchronization: tcache_ql_mtx.
+ */
+ ql_head(tcache_slow_t) tcache_ql;
+ ql_head(cache_bin_array_descriptor_t) cache_bin_array_descriptor_ql;
+ malloc_mutex_t tcache_ql_mtx;
+
+ /*
+ * Represents a dss_prec_t, but atomically.
+ *
+ * Synchronization: atomic.
+ */
+ atomic_u_t dss_prec;
+
+ /*
+ * Extant large allocations.
+ *
+ * Synchronization: large_mtx.
+ */
+ edata_list_active_t large;
+ /* Synchronizes all large allocation/update/deallocation. */
+ malloc_mutex_t large_mtx;
+
+ /* The page-level allocator shard this arena uses. */
+ pa_shard_t pa_shard;
+
+ /*
+ * A cached copy of base->ind. This can get accessed on hot paths;
+ * looking it up in base requires an extra pointer hop / cache miss.
+ */
+ unsigned ind;
+
+ /*
+ * Base allocator, from which arena metadata are allocated.
+ *
+ * Synchronization: internal.
+ */
+ base_t *base;
+ /* Used to determine uptime. Read-only after initialization. */
+ nstime_t create_time;
+
+ /*
+ * The arena is allocated alongside its bins; really this is a
+ * dynamically sized array determined by the binshard settings.
+ */
+ bin_t bins[0];
+};
+
+#endif /* JEMALLOC_INTERNAL_ARENA_STRUCTS_H */