c1e00ef2a6
b2c0d6322d (Add witness, a simple online
locking validator.) caused a broad propagation of tsd throughout the
internal API, but tsd_fetch() was designed to fail prior to tsd
bootstrapping. Fix this by splitting tsd_t into non-nullable tsd_t and
nullable tsdn_t, and modifying all internal APIs that do not critically
rely on tsd to take nullable pointers. Furthermore, add the
tsd_booted_get() function so that tsdn_fetch() can probe whether tsd
bootstrapping is complete and return NULL if not. All dangerous
conversions of nullable pointers are tsdn_tsd() calls that assert-fail
on invalid conversion.
87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/******************************************************************************/
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#ifdef JEMALLOC_H_TYPES
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typedef struct ckh_s ckh_t;
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typedef struct ckhc_s ckhc_t;
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/* Typedefs to allow easy function pointer passing. */
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typedef void ckh_hash_t (const void *, size_t[2]);
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typedef bool ckh_keycomp_t (const void *, const void *);
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/* Maintain counters used to get an idea of performance. */
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/* #define CKH_COUNT */
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/* Print counter values in ckh_delete() (requires CKH_COUNT). */
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/* #define CKH_VERBOSE */
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/*
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* There are 2^LG_CKH_BUCKET_CELLS cells in each hash table bucket. Try to fit
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* one bucket per L1 cache line.
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*/
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#define LG_CKH_BUCKET_CELLS (LG_CACHELINE - LG_SIZEOF_PTR - 1)
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#endif /* JEMALLOC_H_TYPES */
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/******************************************************************************/
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#ifdef JEMALLOC_H_STRUCTS
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/* Hash table cell. */
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struct ckhc_s {
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const void *key;
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const void *data;
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};
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struct ckh_s {
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#ifdef CKH_COUNT
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/* Counters used to get an idea of performance. */
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uint64_t ngrows;
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uint64_t nshrinks;
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uint64_t nshrinkfails;
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uint64_t ninserts;
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uint64_t nrelocs;
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#endif
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/* Used for pseudo-random number generation. */
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uint64_t prng_state;
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/* Total number of items. */
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size_t count;
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/*
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* Minimum and current number of hash table buckets. There are
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* 2^LG_CKH_BUCKET_CELLS cells per bucket.
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*/
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unsigned lg_minbuckets;
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unsigned lg_curbuckets;
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/* Hash and comparison functions. */
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ckh_hash_t *hash;
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ckh_keycomp_t *keycomp;
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/* Hash table with 2^lg_curbuckets buckets. */
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ckhc_t *tab;
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};
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#endif /* JEMALLOC_H_STRUCTS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_EXTERNS
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bool ckh_new(tsdn_t *tsdn, ckh_t *ckh, size_t minitems, ckh_hash_t *hash,
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ckh_keycomp_t *keycomp);
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void ckh_delete(tsdn_t *tsdn, ckh_t *ckh);
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size_t ckh_count(ckh_t *ckh);
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bool ckh_iter(ckh_t *ckh, size_t *tabind, void **key, void **data);
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bool ckh_insert(tsdn_t *tsdn, ckh_t *ckh, const void *key, const void *data);
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bool ckh_remove(tsdn_t *tsdn, ckh_t *ckh, const void *searchkey, void **key,
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void **data);
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bool ckh_search(ckh_t *ckh, const void *searchkey, void **key, void **data);
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void ckh_string_hash(const void *key, size_t r_hash[2]);
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bool ckh_string_keycomp(const void *k1, const void *k2);
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void ckh_pointer_hash(const void *key, size_t r_hash[2]);
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bool ckh_pointer_keycomp(const void *k1, const void *k2);
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#endif /* JEMALLOC_H_EXTERNS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_INLINES
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#endif /* JEMALLOC_H_INLINES */
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/******************************************************************************/
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